Adding upstream version 1:115.7.0.upstream/1%115.7.0 upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
author: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-21 11:44:51 +0000
committer: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-21 11:44:51 +0000
commit: 9e3c08db40b8916968b9f30096c7be3f00ce9647 (patch)
tree: a68f146d7fa01f0134297619fbe7e33db084e0aa /gfx/gl
parent: Initial commit. (diff)
download: thunderbird-9e3c08db40b8916968b9f30096c7be3f00ce9647.tar.xz
thunderbird-9e3c08db40b8916968b9f30096c7be3f00ce9647.zip
77 files changed, 33050 insertions, 0 deletions
diff --git a/gfx/gl/AndroidNativeWindow.h b/gfx/gl/AndroidNativeWindow.h
new file mode 100644
index 0000000000..a45fccc099
--- /dev/null
+++ b/gfx/gl/AndroidNativeWindow.h
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+// vim:set ts=2 sts=2 sw=2 et cin:
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef AndroidNativeWindow_h__
+#define AndroidNativeWindow_h__
+
+#include <jni.h>
+#include <android/native_window.h>
+#include <android/native_window_jni.h>
+#include "mozilla/java/GeckoSurfaceWrappers.h"
+#include "SurfaceTexture.h"
+
+namespace mozilla {
+namespace gl {
+
+class AndroidNativeWindow final {
+ public:
+  AndroidNativeWindow() : mNativeWindow(nullptr) {}
+
+  explicit AndroidNativeWindow(java::sdk::Surface::Param aSurface) {
+    mNativeWindow =
+        ANativeWindow_fromSurface(jni::GetEnvForThread(), aSurface.Get());
+  }
+
+  explicit AndroidNativeWindow(java::GeckoSurface::Param aSurface) {
+    java::sdk::Surface::LocalRef surf = aSurface->GetSurface();
+    mNativeWindow =
+        ANativeWindow_fromSurface(jni::GetEnvForThread(), surf.Get());
+  }
+
+  ~AndroidNativeWindow() {
+    if (mNativeWindow) {
+      ANativeWindow_release(mNativeWindow);
+      mNativeWindow = nullptr;
+    }
+  }
+
+  ANativeWindow* NativeWindow() const { return mNativeWindow; }
+
+ private:
+  ANativeWindow* mNativeWindow;
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // AndroidNativeWindow_h__
diff --git a/gfx/gl/AndroidSurfaceTexture.cpp b/gfx/gl/AndroidSurfaceTexture.cpp
new file mode 100644
index 0000000000..30260efe32
--- /dev/null
+++ b/gfx/gl/AndroidSurfaceTexture.cpp
@@ -0,0 +1,197 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "AndroidSurfaceTexture.h"
+
+#include "GLContextEGL.h"
+#include "GLBlitHelper.h"
+#include "GLImages.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/layers/LayersSurfaces.h"
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "mozilla/java/GeckoSurfaceTextureNatives.h"
+#  include "AndroidNativeWindow.h"
+#endif  // MOZ_WIDGET_ANDROID
+
+namespace mozilla {
+namespace gl {
+
+class AndroidSharedBlitGL final {
+ public:
+  explicit AndroidSharedBlitGL(const EGLNativeWindowType window) {
+    StaticMutexAutoLock lock(sMutex);
+
+    if (!sContext) {
+      MOZ_ASSERT(sInstanceCount == 0);
+      sContext = CreateContext();
+      if (!sContext) {
+        return;
+      }
+    }
+
+    const auto& egl = *(sContext->mEgl);
+    mTargetSurface =
+        egl.fCreateWindowSurface(sContext->mSurfaceConfig, window, nullptr);
+
+    ++sInstanceCount;
+  }
+
+  ~AndroidSharedBlitGL() {
+    StaticMutexAutoLock lock(sMutex);
+
+    if (mTargetSurface != EGL_NO_SURFACE) {
+      const auto& egl = *(sContext->mEgl);
+      egl.fDestroySurface(mTargetSurface);
+    }
+
+    // Destroy shared GL context when no one uses it.
+    if (--sInstanceCount == 0) {
+      sContext = nullptr;
+    }
+  }
+
+#ifdef MOZ_WIDGET_ANDROID
+  void Blit(const java::GeckoSurfaceTexture::Ref& surfaceTexture,
+            const gfx::IntSize& imageSize) {
+    StaticMutexAutoLock lock(sMutex);
+    MOZ_ASSERT(sContext);
+
+    // Setting overide also makes conext and surface current.
+    sContext->SetEGLSurfaceOverride(mTargetSurface);
+    DebugOnly<bool> rv = sContext->BlitHelper()->Blit(surfaceTexture, imageSize,
+                                                      OriginPos::TopLeft);
+    MOZ_ASSERT(rv);
+    sContext->SwapBuffers();
+    // This method is called through binder IPC and could run on any thread in
+    // the pool. Release the context and surface from this thread after use so
+    // they can be bound to another thread later.
+    UnmakeCurrent(sContext);
+  }
+#endif
+
+ private:
+  static already_AddRefed<GLContextEGL> CreateContextImpl(bool aUseGles) {
+    sMutex.AssertCurrentThreadOwns();
+    MOZ_ASSERT(!sContext);
+
+    nsCString ignored;
+    const auto egl = gl::DefaultEglDisplay(&ignored);
+    EGLConfig eglConfig;
+    CreateConfig(*egl, &eglConfig, /* bpp */ 24, /* depth buffer? */ false,
+                 aUseGles);
+    auto gl = GLContextEGL::CreateGLContext(egl, {}, eglConfig, EGL_NO_SURFACE,
+                                            true, eglConfig, &ignored);
+    if (!gl) {
+      NS_WARNING("Fail to create GL context for native blitter.");
+      return nullptr;
+    }
+    gl->mOwningThreadId = Nothing();
+
+    // Yield the current state made in constructor.
+    UnmakeCurrent(gl);
+    return gl.forget();
+  }
+
+  static already_AddRefed<GLContextEGL> CreateContext() {
+    RefPtr<GLContextEGL> gl;
+#if !defined(MOZ_WIDGET_ANDROID)
+    gl = CreateContextImpl(/* aUseGles */ false);
+#endif  // !defined(MOZ_WIDGET_ANDROID)
+
+    if (!gl) {
+      gl = CreateContextImpl(/* aUseGles */ true);
+    }
+    return gl.forget();
+  }
+
+  static bool UnmakeCurrent(GLContextEGL* const gl) {
+    sMutex.AssertCurrentThreadOwns();
+    MOZ_ASSERT(gl);
+
+    if (!gl->IsCurrent()) {
+      return true;
+    }
+    const auto& egl = *(gl->mEgl);
+    return egl.fMakeCurrent(EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+  }
+
+  static StaticMutex sMutex MOZ_UNANNOTATED;
+  static StaticRefPtr<GLContextEGL> sContext;
+  static size_t sInstanceCount;
+
+  EGLSurface mTargetSurface;
+};
+
+StaticMutex AndroidSharedBlitGL::sMutex;
+StaticRefPtr<GLContextEGL> AndroidSharedBlitGL::sContext;
+size_t AndroidSharedBlitGL::sInstanceCount = 0;
+
+// -
+#ifdef MOZ_WIDGET_ANDROID
+
+void AndroidSurfaceTexture::GetTransformMatrix(
+    java::sdk::SurfaceTexture::Param surfaceTexture,
+    gfx::Matrix4x4* outMatrix) {
+  JNIEnv* const env = jni::GetEnvForThread();
+
+  auto jarray = jni::FloatArray::LocalRef::Adopt(env, env->NewFloatArray(16));
+  surfaceTexture->GetTransformMatrix(jarray);
+
+  jfloat* array = env->GetFloatArrayElements(jarray.Get(), nullptr);
+
+  memcpy(&(outMatrix->_11), array, sizeof(float) * 16);
+
+  env->ReleaseFloatArrayElements(jarray.Get(), array, 0);
+}
+
+class GLBlitterSupport final
+    : public java::GeckoSurfaceTexture::NativeGLBlitHelper::Natives<
+          GLBlitterSupport> {
+ public:
+  using Base =
+      java::GeckoSurfaceTexture::NativeGLBlitHelper::Natives<GLBlitterSupport>;
+  using Base::AttachNative;
+  using Base::DisposeNative;
+  using Base::GetNative;
+
+  static java::GeckoSurfaceTexture::NativeGLBlitHelper::LocalRef NativeCreate(
+      jlong sourceTextureHandle, jni::Object::Param targetSurface, jint width,
+      jint height) {
+    AndroidNativeWindow win(java::GeckoSurface::Ref::From(targetSurface));
+    auto helper = java::GeckoSurfaceTexture::NativeGLBlitHelper::New();
+    const auto& eglWindow = win.NativeWindow();
+    GLBlitterSupport::AttachNative(
+        helper,
+        MakeUnique<GLBlitterSupport>(MakeUnique<AndroidSharedBlitGL>(eglWindow),
+                                     sourceTextureHandle, width, height));
+    return helper;
+  }
+
+  GLBlitterSupport(UniquePtr<AndroidSharedBlitGL>&& gl,
+                   jlong sourceTextureHandle, jint width, jint height)
+      : mGl(std::move(gl)),
+        mSourceTextureHandle(sourceTextureHandle),
+        mSize(width, height) {}
+
+  void Blit() {
+    auto surfaceTexture =
+        java::GeckoSurfaceTexture::Lookup(mSourceTextureHandle);
+    mGl->Blit(surfaceTexture, mSize);
+  }
+
+ private:
+  const UniquePtr<AndroidSharedBlitGL> mGl;
+  const AndroidSurfaceTextureHandle mSourceTextureHandle;
+  const gfx::IntSize mSize;
+};
+
+void AndroidSurfaceTexture::Init() { GLBlitterSupport::Init(); }
+
+#endif  // MOZ_WIDGET_ANDROID
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/AndroidSurfaceTexture.h b/gfx/gl/AndroidSurfaceTexture.h
new file mode 100644
index 0000000000..bf9a5ed6ae
--- /dev/null
+++ b/gfx/gl/AndroidSurfaceTexture.h
@@ -0,0 +1,34 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+// vim:set ts=2 sts=2 sw=2 et cin:
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef AndroidSurfaceTexture_h__
+#define AndroidSurfaceTexture_h__
+
+#include "mozilla/gfx/Matrix.h"
+
+typedef uint64_t AndroidSurfaceTextureHandle;
+
+#ifdef MOZ_WIDGET_ANDROID
+
+#  include "SurfaceTexture.h"
+
+namespace mozilla {
+namespace gl {
+
+class AndroidSurfaceTexture {
+ public:
+  static void Init();
+  static void GetTransformMatrix(
+      java::sdk::SurfaceTexture::Param surfaceTexture,
+      mozilla::gfx::Matrix4x4* outMatrix);
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // MOZ_WIDGET_ANDROID
+
+#endif  // AndroidSurfaceTexture_h__
diff --git a/gfx/gl/AutoMappable.h b/gfx/gl/AutoMappable.h
new file mode 100644
index 0000000000..f93b2ccb57
--- /dev/null
+++ b/gfx/gl/AutoMappable.h
@@ -0,0 +1,148 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_AUTO_MAPPABLE_H
+#define MOZILLA_AUTO_MAPPABLE_H
+
+// Here be dragons.
+
+#include <functional>
+
+namespace mozilla::gfx {
+
+template <class T>
+size_t Hash(const T&);
+
+template <class T>
+struct StaticStdHasher {
+  static auto HashImpl(const T& v) { return std::hash<T>()(v); }
+};
+
+template <class T>
+struct StaticHasher {
+  static auto HashImpl(const T& v) { return v.hash(); }
+};
+template <class T>
+struct StaticHasher<std::optional<T>> {
+  static size_t HashImpl(const std::optional<T>& v) {
+    if (!v) return 0;
+    return Hash(*v);
+  }
+};
+template <>
+struct StaticHasher<int> : public StaticStdHasher<int> {};
+template <>
+struct StaticHasher<bool> : public StaticStdHasher<bool> {};
+template <>
+struct StaticHasher<float> : public StaticStdHasher<float> {};
+
+template <class T>
+size_t Hash(const T& v) {
+  return StaticHasher<T>::HashImpl(v);
+}
+
+//-
+// From Boost:
+// https://www.boost.org/doc/libs/1_37_0/doc/html/hash/reference.html#boost.hash_combine
+
+inline size_t HashCombine(size_t seed, const size_t hash) {
+  seed ^= hash + 0x9e3779b9 + (seed << 6) + (seed >> 2);
+  return seed;
+}
+
+// -
+// See
+// https://codereview.stackexchange.com/questions/136770/hashing-a-tuple-in-c17
+
+template <class... Args, size_t... Ids>
+size_t HashTupleN(const std::tuple<Args...>& tup,
+                  const std::index_sequence<Ids...>&) {
+  size_t seed = 0;
+  for (const auto& hash : {Hash(std::get<Ids>(tup))...}) {
+    seed = HashCombine(seed, hash);
+  }
+  return seed;
+}
+
+template <class... Args>
+size_t HashTuple(const std::tuple<Args...>& tup) {
+  return HashTupleN(tup, std::make_index_sequence<sizeof...(Args)>());
+}
+
+// -
+
+template <class T>
+auto MembersEq(const T& a, const T& b) {
+  const auto atup = a.Members();
+  const auto btup = b.Members();
+  return atup == btup;
+}
+
+template <class T>
+auto MembersLt(const T& a, const T& b) {
+  const auto atup = a.Members();
+  const auto btup = b.Members();
+  return atup == btup;
+}
+
+template <class T>
+auto MembersHash(const T& a) {
+  const auto atup = a.Members();
+  return HashTuple(atup);
+}
+
+template <class T>
+struct MembersHasher final {
+  auto operator()(const T& v) const { return v.hash(); }
+};
+
+/** E.g.:
+struct Foo {
+    int i;
+    bool b;
+
+   auto Members() const { return std::tie(i, b); }
+    INLINE_AUTO_MAPPABLE(Foo)
+};
+std::unordered_set<T, T::Hasher> easy;
+**/
+#define INLINE_DERIVE_MEMBERS_EQ(T)                \
+  friend bool operator==(const T& a, const T& b) { \
+    return mozilla::gfx::MembersEq(a, b);          \
+  }                                                \
+  friend bool operator!=(const T& a, const T& b) { return !operator==(a, b); }
+#define INLINE_AUTO_MAPPABLE(T)                                          \
+  friend bool operator<(const T& a, const T& b) {                        \
+    return mozilla::gfx::MembersLt(a, b);                                \
+  }                                                                      \
+  INLINE_DERIVE_MEMBERS_EQ(T)                                            \
+  size_t hash() const {                                                  \
+    return mozilla::gfx::MembersHash(*reinterpret_cast<const T*>(this)); \
+  }                                                                      \
+  using Hasher = mozilla::gfx::MembersHasher<T>;
+
+// -
+
+/** E.g.:
+```
+struct Foo : public AutoMappable<Foo> {
+    int i;
+    bool b;
+
+    auto Members() const { return std::tie(i, b); }
+};
+std::unordered_set<T, T::Hasher> easy;
+```
+`easy.insert({{}, 2, true});`
+The initial {} is needed for aggregate initialization of AutoMappable<Foo>.
+Use INLINE_AUTO_MAPPABLE if this is too annoying.
+**/
+template <class T>
+struct AutoMappable {
+  INLINE_AUTO_MAPPABLE(T)
+};
+
+}  // namespace mozilla::gfx
+
+#endif  // MOZILLA_AUTO_MAPPABLE_H
diff --git a/gfx/gl/Colorspaces.cpp b/gfx/gl/Colorspaces.cpp
new file mode 100644
index 0000000000..29ddf37cd9
--- /dev/null
+++ b/gfx/gl/Colorspaces.cpp
@@ -0,0 +1,435 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// We are going to be doing so, so many transforms, so descriptive labels are
+// critical.
+
+#include "Colorspaces.h"
+
+#include "nsDebug.h"
+#include "qcms.h"
+
+namespace mozilla::color {
+
+// tf = { k * linear                   | linear < b
+//      { a * pow(linear, 1/g) - (1-a) | linear >= b
+float TfFromLinear(const PiecewiseGammaDesc& desc, const float linear) {
+  if (linear < desc.b) {
+    return linear * desc.k;
+  }
+  float ret = linear;
+  ret = powf(ret, 1.0f / desc.g);
+  ret *= desc.a;
+  ret -= (desc.a - 1);
+  return ret;
+}
+
+float LinearFromTf(const PiecewiseGammaDesc& desc, const float tf) {
+  const auto linear_if_low = tf / desc.k;
+  if (linear_if_low < desc.b) {
+    return linear_if_low;
+  }
+  float ret = tf;
+  ret += (desc.a - 1);
+  ret /= desc.a;
+  ret = powf(ret, 1.0f * desc.g);
+  return ret;
+}
+
+// -
+
+mat3 YuvFromRgb(const YuvLumaCoeffs& yc) {
+  // Y is always [0,1]
+  // U and V are signed, and could be either [-1,+1] or [-0.5,+0.5].
+  // Specs generally use [-0.5,+0.5], so we use that too.
+  // E.g.
+  // y = 0.2126*r + 0.7152*g + 0.0722*b
+  // u = (b - y) / (u_range = u_max - u_min) // u_min = -u_max
+  //   = (b - y) / (u(0,0,1) - u(1,1,0))
+  //   = (b - y) / (2 * u(0,0,1))
+  //   = (b - y) / (2 * u.b))
+  //   = (b - y) / (2 * (1 - 0.0722))
+  //   = (-0.2126*r + -0.7152*g + (1-0.0722)*b) / 1.8556
+  // v = (r - y) / 1.5748;
+  //   = ((1-0.2126)*r + -0.7152*g + -0.0722*b) / 1.5748
+  const auto y = vec3({yc.r, yc.g, yc.b});
+  const auto u = vec3({0, 0, 1}) - y;
+  const auto v = vec3({1, 0, 0}) - y;
+
+  // From rows:
+  return mat3({y, u / (2 * u.z()), v / (2 * v.x())});
+}
+
+mat4 YuvFromYcbcr(const YcbcrDesc& d) {
+  // E.g.
+  // y = (yy - 16) / (235 - 16); // 16->0, 235->1
+  // u = (cb - 128) / (240 - 16); // 16->-0.5, 128->0, 240->+0.5
+  // v = (cr - 128) / (240 - 16);
+
+  const auto yRange = d.y1 - d.y0;
+  const auto uHalfRange = d.uPlusHalf - d.u0;
+  const auto uRange = 2 * uHalfRange;
+
+  const auto ycbcrFromYuv = mat4{{vec4{{yRange, 0, 0, d.y0}},
+                                  {{0, uRange, 0, d.u0}},
+                                  {{0, 0, uRange, d.u0}},
+                                  {{0, 0, 0, 1}}}};
+  const auto yuvFromYcbcr = inverse(ycbcrFromYuv);
+  return yuvFromYcbcr;
+}
+
+inline vec3 CIEXYZ_from_CIExyY(const vec2 xy, const float Y = 1) {
+  const auto xyz = vec3(xy, 1 - xy.x() - xy.y());
+  const auto XYZ = xyz * (Y / xy.y());
+  return XYZ;
+}
+
+mat3 XyzFromLinearRgb(const Chromaticities& c) {
+  // http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
+
+  // Given red (xr, yr), green (xg, yg), blue (xb, yb),
+  // and whitepoint (XW, YW, ZW)
+
+  // [ X ]       [ R ]
+  // [ Y ] = M x [ G ]
+  // [ Z ]       [ B ]
+
+  //     [ Sr*Xr Sg*Xg Sb*Xb ]
+  // M = [ Sr*Yr Sg*Yg Sb*Yb ]
+  //     [ Sr*Zr Sg*Zg Sb*Zb ]
+
+  // Xr = xr / yr
+  // Yr = 1
+  // Zr = (1 - xr - yr) / yr
+
+  // Xg = xg / yg
+  // Yg = 1
+  // Zg = (1 - xg - yg) / yg
+
+  // Xb = xb / yb
+  // Yb = 1
+  // Zb = (1 - xb - yb) / yb
+
+  // [ Sr ]   [ Xr Xg Xb ]^-1   [ XW ]
+  // [ Sg ] = [ Yr Yg Yb ]    x [ YW ]
+  // [ Sb ]   [ Zr Zg Zb ]      [ ZW ]
+
+  const auto xrgb = vec3({c.rx, c.gx, c.bx});
+  const auto yrgb = vec3({c.ry, c.gy, c.by});
+
+  const auto Xrgb = xrgb / yrgb;
+  const auto Yrgb = vec3(1);
+  const auto Zrgb = (vec3(1) - xrgb - yrgb) / yrgb;
+
+  const auto XYZrgb = mat3({Xrgb, Yrgb, Zrgb});
+  const auto XYZrgb_inv = inverse(XYZrgb);
+  const auto XYZwhitepoint = vec3({c.wx, c.wy, 1 - c.wx - c.wy}) / c.wy;
+  const auto Srgb = XYZrgb_inv * XYZwhitepoint;
+
+  const auto M = mat3({Srgb * Xrgb, Srgb * Yrgb, Srgb * Zrgb});
+  return M;
+}
+
+// -
+ColorspaceTransform ColorspaceTransform::Create(const ColorspaceDesc& src,
+                                                const ColorspaceDesc& dst) {
+  auto ct = ColorspaceTransform{src, dst};
+  ct.srcTf = src.tf;
+  ct.dstTf = dst.tf;
+
+  const auto RgbTfFrom = [&](const ColorspaceDesc& cs) {
+    auto rgbFrom = mat4::Identity();
+    if (cs.yuv) {
+      const auto yuvFromYcbcr = YuvFromYcbcr(cs.yuv->ycbcr);
+      const auto yuvFromRgb = YuvFromRgb(cs.yuv->yCoeffs);
+      const auto rgbFromYuv = inverse(yuvFromRgb);
+      const auto rgbFromYuv4 = mat4(rgbFromYuv);
+
+      const auto rgbFromYcbcr = rgbFromYuv4 * yuvFromYcbcr;
+      rgbFrom = rgbFromYcbcr;
+    }
+    return rgbFrom;
+  };
+
+  ct.srcRgbTfFromSrc = RgbTfFrom(src);
+  const auto dstRgbTfFromDst = RgbTfFrom(dst);
+  ct.dstFromDstRgbTf = inverse(dstRgbTfFromDst);
+
+  // -
+
+  ct.dstRgbLinFromSrcRgbLin = mat3::Identity();
+  if (!(src.chrom == dst.chrom)) {
+    const auto xyzFromSrcRgbLin = XyzFromLinearRgb(src.chrom);
+    const auto xyzFromDstRgbLin = XyzFromLinearRgb(dst.chrom);
+    const auto dstRgbLinFromXyz = inverse(xyzFromDstRgbLin);
+    ct.dstRgbLinFromSrcRgbLin = dstRgbLinFromXyz * xyzFromSrcRgbLin;
+  }
+
+  return ct;
+}
+
+vec3 ColorspaceTransform::DstFromSrc(const vec3 src) const {
+  const auto srcRgbTf = srcRgbTfFromSrc * vec4(src, 1);
+  auto srcRgbLin = srcRgbTf;
+  if (srcTf) {
+    srcRgbLin.x(LinearFromTf(*srcTf, srcRgbTf.x()));
+    srcRgbLin.y(LinearFromTf(*srcTf, srcRgbTf.y()));
+    srcRgbLin.z(LinearFromTf(*srcTf, srcRgbTf.z()));
+  }
+
+  const auto dstRgbLin = dstRgbLinFromSrcRgbLin * vec3(srcRgbLin);
+  auto dstRgbTf = dstRgbLin;
+  if (dstTf) {
+    dstRgbTf.x(TfFromLinear(*dstTf, dstRgbLin.x()));
+    dstRgbTf.y(TfFromLinear(*dstTf, dstRgbLin.y()));
+    dstRgbTf.z(TfFromLinear(*dstTf, dstRgbLin.z()));
+  }
+
+  const auto dst4 = dstFromDstRgbTf * vec4(dstRgbTf, 1);
+  return vec3(dst4);
+}
+
+// -
+
+mat3 XyzAFromXyzB_BradfordLinear(const vec2 xyA, const vec2 xyB) {
+  // This is what ICC profiles use to do whitepoint transforms,
+  // because ICC also requires D50 for the Profile Connection Space.
+
+  // From https://www.color.org/specification/ICC.1-2022-05.pdf
+  // E.3 "Linearized Bradford transformation":
+
+  const auto M_BFD = mat3{{
+      vec3{{0.8951, 0.2664f, -0.1614f}},
+      vec3{{-0.7502f, 1.7135f, 0.0367f}},
+      vec3{{0.0389f, -0.0685f, 1.0296f}},
+  }};
+  // NB: They use rho/gamma/beta, but we'll use R/G/B here.
+  const auto XYZDst = CIEXYZ_from_CIExyY(xyA);  // "XYZ_W", WP of PCS
+  const auto XYZSrc = CIEXYZ_from_CIExyY(xyB);  // "XYZ_NAW", WP of src
+  const auto rgbSrc = M_BFD * XYZSrc;           // "RGB_SRC"
+  const auto rgbDst = M_BFD * XYZDst;           // "RGB_PCS"
+  const auto rgbDstOverSrc = rgbDst / rgbSrc;
+  const auto M_dstOverSrc = mat3::Scale(rgbDstOverSrc);
+  const auto M_adapt = inverse(M_BFD) * M_dstOverSrc * M_BFD;
+  return M_adapt;
+}
+
+std::optional<mat4> ColorspaceTransform::ToMat4() const {
+  mat4 fromSrc = srcRgbTfFromSrc;
+  if (srcTf) return {};
+  fromSrc = mat4(dstRgbLinFromSrcRgbLin) * fromSrc;
+  if (dstTf) return {};
+  fromSrc = dstFromDstRgbTf * fromSrc;
+  return fromSrc;
+}
+
+Lut3 ColorspaceTransform::ToLut3(const ivec3 size) const {
+  auto lut = Lut3::Create(size);
+  lut.SetMap([&](const vec3& srcVal) { return DstFromSrc(srcVal); });
+  return lut;
+}
+
+vec3 Lut3::Sample(const vec3 in01) const {
+  const auto coord = vec3(size - 1) * in01;
+  const auto p0 = floor(coord);
+  const auto dp = coord - p0;
+  const auto ip0 = ivec3(p0);
+
+  // Trilinear
+  const auto f000 = Fetch(ip0 + ivec3({0, 0, 0}));
+  const auto f100 = Fetch(ip0 + ivec3({1, 0, 0}));
+  const auto f010 = Fetch(ip0 + ivec3({0, 1, 0}));
+  const auto f110 = Fetch(ip0 + ivec3({1, 1, 0}));
+  const auto f001 = Fetch(ip0 + ivec3({0, 0, 1}));
+  const auto f101 = Fetch(ip0 + ivec3({1, 0, 1}));
+  const auto f011 = Fetch(ip0 + ivec3({0, 1, 1}));
+  const auto f111 = Fetch(ip0 + ivec3({1, 1, 1}));
+
+  const auto fx00 = mix(f000, f100, dp.x());
+  const auto fx10 = mix(f010, f110, dp.x());
+  const auto fx01 = mix(f001, f101, dp.x());
+  const auto fx11 = mix(f011, f111, dp.x());
+
+  const auto fxy0 = mix(fx00, fx10, dp.y());
+  const auto fxy1 = mix(fx01, fx11, dp.y());
+
+  const auto fxyz = mix(fxy0, fxy1, dp.z());
+  return fxyz;
+}
+
+// -
+
+ColorProfileDesc ColorProfileDesc::From(const ColorspaceDesc& cspace) {
+  auto ret = ColorProfileDesc{};
+
+  if (cspace.yuv) {
+    const auto yuvFromYcbcr = YuvFromYcbcr(cspace.yuv->ycbcr);
+    const auto yuvFromRgb = YuvFromRgb(cspace.yuv->yCoeffs);
+    const auto rgbFromYuv = inverse(yuvFromRgb);
+    ret.rgbFromYcbcr = mat4(rgbFromYuv) * yuvFromYcbcr;
+  }
+
+  if (cspace.tf) {
+    const size_t tableSize = 256;
+    auto& tableR = ret.linearFromTf.r;
+    tableR.resize(tableSize);
+    for (size_t i = 0; i < tableR.size(); i++) {
+      const float tfVal = i / float(tableR.size() - 1);
+      const float linearVal = LinearFromTf(*cspace.tf, tfVal);
+      tableR[i] = linearVal;
+    }
+    ret.linearFromTf.g = tableR;
+    ret.linearFromTf.b = tableR;
+  }
+
+  ret.xyzd65FromLinearRgb = XyzFromLinearRgb(cspace.chrom);
+
+  return ret;
+}
+
+// -
+
+template <class T>
+constexpr inline T NewtonEstimateX(const T x1, const T y1, const T dydx,
+                                   const T y2 = 0) {
+  // Estimate x s.t. y=0
+  // y = y0 + x*dydx;
+  // y0 = y - x*dydx;
+  // y1 - x1*dydx = y2 - x2*dydx
+  // x2*dydx = y2 - y1 + x1*dydx
+  // x2 = (y2 - y1)/dydx + x1
+  return (y2 - y1) / dydx + x1;
+}
+
+float GuessGamma(const std::vector<float>& vals, float exp_guess) {
+  // Approximate (signed) error = 0.0.
+  constexpr float d_exp = 0.001;
+  constexpr float error_tolerance = 0.001;
+  struct Samples {
+    float y1, y2;
+  };
+  const auto Sample = [&](const float exp) {
+    int i = -1;
+    auto samples = Samples{};
+    for (const auto& expected : vals) {
+      i += 1;
+      const auto in = i / float(vals.size() - 1);
+      samples.y1 += powf(in, exp) - expected;
+      samples.y2 += powf(in, exp + d_exp) - expected;
+    }
+    samples.y1 /= vals.size();  // Normalize by val count.
+    samples.y2 /= vals.size();
+    return samples;
+  };
+  constexpr int MAX_ITERS = 10;
+  for (int i = 1;; i++) {
+    const auto err = Sample(exp_guess);
+    const auto derr = err.y2 - err.y1;
+    exp_guess = NewtonEstimateX(exp_guess, err.y1, derr / d_exp);
+    // Check if we were close before, because then this last round of estimation
+    // should get us pretty much right on it.
+    if (std::abs(err.y1) < error_tolerance) {
+      return exp_guess;
+    }
+    if (i >= MAX_ITERS) {
+      printf_stderr("GuessGamma() -> %f after %i iterations (avg err %f)\n",
+                    exp_guess, i, err.y1);
+      MOZ_ASSERT(false, "GuessGamma failed.");
+      return exp_guess;
+    }
+  }
+}
+
+// -
+
+ColorProfileDesc ColorProfileDesc::From(const qcms_profile& qcmsProfile) {
+  ColorProfileDesc ret;
+
+  qcms_profile_data data = {};
+  qcms_profile_get_data(&qcmsProfile, &data);
+
+  auto xyzd50FromLinearRgb = mat3{};
+  // X contributions from [R,G,B]
+  xyzd50FromLinearRgb.at(0, 0) = data.red_colorant_xyzd50[0];
+  xyzd50FromLinearRgb.at(1, 0) = data.green_colorant_xyzd50[0];
+  xyzd50FromLinearRgb.at(2, 0) = data.blue_colorant_xyzd50[0];
+  // Y contributions from [R,G,B]
+  xyzd50FromLinearRgb.at(0, 1) = data.red_colorant_xyzd50[1];
+  xyzd50FromLinearRgb.at(1, 1) = data.green_colorant_xyzd50[1];
+  xyzd50FromLinearRgb.at(2, 1) = data.blue_colorant_xyzd50[1];
+  // Z contributions from [R,G,B]
+  xyzd50FromLinearRgb.at(0, 2) = data.red_colorant_xyzd50[2];
+  xyzd50FromLinearRgb.at(1, 2) = data.green_colorant_xyzd50[2];
+  xyzd50FromLinearRgb.at(2, 2) = data.blue_colorant_xyzd50[2];
+
+  const auto d65FromD50 = XyzAFromXyzB_BradfordLinear(D65, D50);
+  ret.xyzd65FromLinearRgb = d65FromD50 * xyzd50FromLinearRgb;
+
+  // -
+
+  const auto Fn = [&](std::vector<float>* const linearFromTf,
+                      int32_t claimed_samples,
+                      const qcms_color_channel channel) {
+    if (claimed_samples == 0) return;  // No tf.
+
+    if (claimed_samples == -1) {
+      claimed_samples = 4096;  // Ask it to generate a bunch.
+      claimed_samples = 256;   // Ask it to generate a bunch.
+    }
+
+    linearFromTf->resize(AssertedCast<size_t>(claimed_samples));
+
+    const auto begin = linearFromTf->data();
+    qcms_profile_get_lut(&qcmsProfile, channel, begin,
+                         begin + linearFromTf->size());
+  };
+
+  Fn(&ret.linearFromTf.r, data.linear_from_trc_red_samples,
+     qcms_color_channel::Red);
+  Fn(&ret.linearFromTf.b, data.linear_from_trc_blue_samples,
+     qcms_color_channel::Blue);
+  Fn(&ret.linearFromTf.g, data.linear_from_trc_green_samples,
+     qcms_color_channel::Green);
+
+  // -
+
+  return ret;
+}
+
+// -
+
+ColorProfileConversionDesc ColorProfileConversionDesc::From(
+    const FromDesc& desc) {
+  const auto dstLinearRgbFromXyzd65 = inverse(desc.dst.xyzd65FromLinearRgb);
+  auto ret = ColorProfileConversionDesc{
+      .srcRgbFromSrcYuv = desc.src.rgbFromYcbcr,
+      .srcLinearFromSrcTf = desc.src.linearFromTf,
+      .dstLinearFromSrcLinear =
+          dstLinearRgbFromXyzd65 * desc.src.xyzd65FromLinearRgb,
+      .dstTfFromDstLinear = {},
+  };
+  bool sameTF = true;
+  sameTF &= desc.src.linearFromTf.r == desc.dst.linearFromTf.r;
+  sameTF &= desc.src.linearFromTf.g == desc.dst.linearFromTf.g;
+  sameTF &= desc.src.linearFromTf.b == desc.dst.linearFromTf.b;
+  if (sameTF) {
+    ret.srcLinearFromSrcTf = {};
+    ret.dstTfFromDstLinear = {};
+  } else {
+    const auto Invert = [](const std::vector<float>& linearFromTf,
+                           std::vector<float>* const tfFromLinear) {
+      const auto size = linearFromTf.size();
+      MOZ_ASSERT(size != 1);  // Less than two is uninvertable.
+      if (size < 2) return;
+      (*tfFromLinear).resize(size);
+      InvertLut(linearFromTf, &*tfFromLinear);
+    };
+    Invert(desc.dst.linearFromTf.r, &ret.dstTfFromDstLinear.r);
+    Invert(desc.dst.linearFromTf.g, &ret.dstTfFromDstLinear.g);
+    Invert(desc.dst.linearFromTf.b, &ret.dstTfFromDstLinear.b);
+  }
+  return ret;
+}
+
+}  // namespace mozilla::color
diff --git a/gfx/gl/Colorspaces.h b/gfx/gl/Colorspaces.h
new file mode 100644
index 0000000000..8f36854d2d
--- /dev/null
+++ b/gfx/gl/Colorspaces.h
@@ -0,0 +1,987 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_GFX_GL_COLORSPACES_H_
+#define MOZILLA_GFX_GL_COLORSPACES_H_
+
+// Reference: https://hackmd.io/0wkiLmP7RWOFjcD13M870A
+
+// We are going to be doing so, so many transforms, so descriptive labels are
+// critical.
+
+// Colorspace background info: https://hackmd.io/0wkiLmP7RWOFjcD13M870A
+
+#include <algorithm>
+#include <array>
+#include <cmath>
+#include <cstdint>
+#include <cstdlib>
+#include <functional>
+#include <optional>
+#include <vector>
+
+#include "AutoMappable.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/Span.h"
+
+#ifdef DEBUG
+#  define ASSERT(EXPR)    \
+    do {                  \
+      if (!(EXPR)) {      \
+        __builtin_trap(); \
+      }                   \
+    } while (false)
+#else
+#  define ASSERT(EXPR) (void)(EXPR)
+#endif
+
+struct _qcms_profile;
+typedef struct _qcms_profile qcms_profile;
+
+namespace mozilla::color {
+
+struct YuvLumaCoeffs final {
+  float r = 0.2126;
+  float g = 0.7152;
+  float b = 0.0722;
+
+  auto Members() const { return std::tie(r, g, b); }
+  INLINE_AUTO_MAPPABLE(YuvLumaCoeffs)
+
+  static constexpr auto Rec709() { return YuvLumaCoeffs(); }
+
+  static constexpr auto Rec2020() {
+    return YuvLumaCoeffs{0.2627, 0.6780, 0.0593};
+  }
+};
+
+struct PiecewiseGammaDesc final {
+  // tf = { k * linear                   | linear < b
+  //      { a * pow(linear, 1/g) - (1-a) | linear >= b
+
+  // Default to Srgb
+  float a = 1.055;
+  float b = 0.04045 / 12.92;
+  float g = 2.4;
+  float k = 12.92;
+
+  auto Members() const { return std::tie(a, b, g, k); }
+  INLINE_AUTO_MAPPABLE(PiecewiseGammaDesc)
+
+  static constexpr auto Srgb() { return PiecewiseGammaDesc(); }
+  static constexpr auto DisplayP3() { return Srgb(); }
+
+  static constexpr auto Rec709() {
+    return PiecewiseGammaDesc{
+        1.099,
+        0.018,
+        1.0 / 0.45,  // ~2.222
+        4.5,
+    };
+  }
+  // FYI: static constexpr auto Rec2020_10bit() { return Rec709(); }
+  static constexpr auto Rec2020_12bit() {
+    return PiecewiseGammaDesc{
+        1.0993,
+        0.0181,
+        1.0 / 0.45,  // ~2.222
+        4.5,
+    };
+  }
+};
+
+struct YcbcrDesc final {
+  float y0 = 16 / 255.0;
+  float y1 = 235 / 255.0;
+  float u0 = 128 / 255.0;
+  float uPlusHalf = 240 / 255.0;
+
+  auto Members() const { return std::tie(y0, y1, u0, uPlusHalf); }
+  INLINE_AUTO_MAPPABLE(YcbcrDesc)
+
+  static constexpr auto Narrow8() {  // AKA limited/studio/tv
+    return YcbcrDesc();
+  }
+  static constexpr auto Full8() {  // AKA pc
+    return YcbcrDesc{
+        0 / 255.0,
+        255 / 255.0,
+        128 / 255.0,
+        254 / 255.0,
+    };
+  }
+  static constexpr auto Float() {  // Best for a LUT
+    return YcbcrDesc{0.0, 1.0, 0.5, 1.0};
+  }
+};
+
+struct Chromaticities final {
+  float rx = 0.640;
+  float ry = 0.330;
+  float gx = 0.300;
+  float gy = 0.600;
+  float bx = 0.150;
+  float by = 0.060;
+  // D65:
+  static constexpr float wx = 0.3127;
+  static constexpr float wy = 0.3290;
+
+  auto Members() const { return std::tie(rx, ry, gx, gy, bx, by); }
+  INLINE_AUTO_MAPPABLE(Chromaticities)
+
+  // -
+
+  static constexpr auto Rec709() {  // AKA limited/studio/tv
+    return Chromaticities();
+  }
+  static constexpr auto Srgb() { return Rec709(); }
+
+  static constexpr auto Rec601_625_Pal() {
+    auto ret = Rec709();
+    ret.gx = 0.290;
+    return ret;
+  }
+  static constexpr auto Rec601_525_Ntsc() {
+    return Chromaticities{
+        0.630, 0.340,  // r
+        0.310, 0.595,  // g
+        0.155, 0.070,  // b
+    };
+  }
+  static constexpr auto Rec2020() {
+    return Chromaticities{
+        0.708, 0.292,  // r
+        0.170, 0.797,  // g
+        0.131, 0.046,  // b
+    };
+  }
+  static constexpr auto DisplayP3() {
+    return Chromaticities{
+        0.680, 0.320,  // r
+        0.265, 0.690,  // g
+        0.150, 0.060,  // b
+    };
+  }
+};
+
+// -
+
+struct YuvDesc final {
+  YuvLumaCoeffs yCoeffs;
+  YcbcrDesc ycbcr;
+
+  auto Members() const { return std::tie(yCoeffs, ycbcr); }
+  INLINE_AUTO_MAPPABLE(YuvDesc);
+};
+
+struct ColorspaceDesc final {
+  Chromaticities chrom;
+  std::optional<PiecewiseGammaDesc> tf;
+  std::optional<YuvDesc> yuv;
+
+  auto Members() const { return std::tie(chrom, tf, yuv); }
+  INLINE_AUTO_MAPPABLE(ColorspaceDesc);
+};
+
+// -
+
+template <class TT, int NN>
+struct avec final {
+  using T = TT;
+  static constexpr auto N = NN;
+
+  std::array<T, N> data = {};
+
+  // -
+
+  constexpr avec() = default;
+  constexpr avec(const avec&) = default;
+
+  constexpr avec(const avec<T, N - 1>& v, T a) {
+    for (int i = 0; i < N - 1; i++) {
+      data[i] = v[i];
+    }
+    data[N - 1] = a;
+  }
+  constexpr avec(const avec<T, N - 2>& v, T a, T b) {
+    for (int i = 0; i < N - 2; i++) {
+      data[i] = v[i];
+    }
+    data[N - 2] = a;
+    data[N - 1] = b;
+  }
+
+  MOZ_IMPLICIT constexpr avec(const std::array<T, N>& data) {
+    this->data = data;
+  }
+
+  explicit constexpr avec(const T v) {
+    for (int i = 0; i < N; i++) {
+      data[i] = v;
+    }
+  }
+
+  template <class T2, int N2>
+  explicit constexpr avec(const avec<T2, N2>& v) {
+    const auto n = std::min(N, N2);
+    for (int i = 0; i < n; i++) {
+      data[i] = static_cast<T>(v[i]);
+    }
+  }
+
+  // -
+
+  const auto& operator[](const size_t n) const { return data[n]; }
+  auto& operator[](const size_t n) { return data[n]; }
+
+  template <int i>
+  constexpr auto get() const {
+    return (i < N) ? data[i] : 0;
+  }
+  constexpr auto x() const { return get<0>(); }
+  constexpr auto y() const { return get<1>(); }
+  constexpr auto z() const { return get<2>(); }
+  constexpr auto w() const { return get<3>(); }
+
+  constexpr auto xyz() const { return vec3({x(), y(), z()}); }
+
+  template <int i>
+  void set(const T v) {
+    if (i < N) {
+      data[i] = v;
+    }
+  }
+  void x(const T v) { set<0>(v); }
+  void y(const T v) { set<1>(v); }
+  void z(const T v) { set<2>(v); }
+  void w(const T v) { set<3>(v); }
+
+  // -
+
+#define _(OP)                                           \
+  friend avec operator OP(const avec a, const avec b) { \
+    avec c;                                             \
+    for (int i = 0; i < N; i++) {                       \
+      c[i] = a[i] OP b[i];                              \
+    }                                                   \
+    return c;                                           \
+  }                                                     \
+  friend avec operator OP(const avec a, const T b) {    \
+    avec c;                                             \
+    for (int i = 0; i < N; i++) {                       \
+      c[i] = a[i] OP b;                                 \
+    }                                                   \
+    return c;                                           \
+  }                                                     \
+  friend avec operator OP(const T a, const avec b) {    \
+    avec c;                                             \
+    for (int i = 0; i < N; i++) {                       \
+      c[i] = a OP b[i];                                 \
+    }                                                   \
+    return c;                                           \
+  }
+  _(+)
+  _(-)
+  _(*)
+  _(/)
+#undef _
+
+  friend bool operator==(const avec a, const avec b) {
+    bool eq = true;
+    for (int i = 0; i < N; i++) {
+      eq &= (a[i] == b[i]);
+    }
+    return eq;
+  }
+};
+using vec2 = avec<float, 2>;
+using vec3 = avec<float, 3>;
+using vec4 = avec<float, 4>;
+using ivec3 = avec<int32_t, 3>;
+using ivec4 = avec<int32_t, 4>;
+
+template <class T, int N>
+T dot(const avec<T, N>& a, const avec<T, N>& b) {
+  const auto c = a * b;
+  T ret = 0;
+  for (int i = 0; i < N; i++) {
+    ret += c[i];
+  }
+  return ret;
+}
+
+template <class V>
+V mix(const V& zero, const V& one, const float val) {
+  return zero * (1 - val) + one * val;
+}
+
+template <class T, int N>
+auto min(const avec<T, N>& a, const avec<T, N>& b) {
+  auto ret = avec<T, N>{};
+  for (int i = 0; i < ret.N; i++) {
+    ret[i] = std::min(a[i], b[i]);
+  }
+  return ret;
+}
+
+template <class T, int N>
+auto max(const avec<T, N>& a, const avec<T, N>& b) {
+  auto ret = avec<T, N>{};
+  for (int i = 0; i < ret.N; i++) {
+    ret[i] = std::max(a[i], b[i]);
+  }
+  return ret;
+}
+
+template <class T, int N>
+auto floor(const avec<T, N>& a) {
+  auto ret = avec<T, N>{};
+  for (int i = 0; i < ret.N; i++) {
+    ret[i] = floorf(a[i]);
+  }
+  return ret;
+}
+
+template <class T, int N>
+auto round(const avec<T, N>& a) {
+  auto ret = avec<T, N>{};
+  for (int i = 0; i < ret.N; i++) {
+    ret[i] = roundf(a[i]);
+  }
+  return ret;
+}
+
+template <class T, int N>
+auto abs(const avec<T, N>& a) {
+  auto ret = avec<T, N>{};
+  for (int i = 0; i < ret.N; i++) {
+    ret[i] = std::abs(a[i]);
+  }
+  return ret;
+}
+
+// -
+
+template <int Y_Rows, int X_Cols>
+struct mat final {
+  static constexpr int y_rows = Y_Rows;
+  static constexpr int x_cols = X_Cols;
+
+  static constexpr auto Identity() {
+    auto ret = mat{};
+    for (int i = 0; i < std::min(x_cols, y_rows); i++) {
+      ret.at(i, i) = 1;
+    }
+    return ret;
+  }
+  static constexpr auto Scale(const avec<float, std::min(x_cols, y_rows)>& v) {
+    auto ret = mat{};
+    for (int i = 0; i < v.N; i++) {
+      ret.at(i, i) = v[i];
+    }
+    return ret;
+  }
+
+  std::array<avec<float, X_Cols>, Y_Rows> rows = {};  // row-major
+
+  // -
+
+  constexpr mat() = default;
+
+  explicit constexpr mat(const std::array<avec<float, X_Cols>, Y_Rows>& rows) {
+    this->rows = rows;
+  }
+
+  template <int Y_Rows2, int X_Cols2>
+  explicit constexpr mat(const mat<Y_Rows2, X_Cols2>& m) {
+    *this = Identity();
+    for (int x = 0; x < std::min(X_Cols, X_Cols2); x++) {
+      for (int y = 0; y < std::min(Y_Rows, Y_Rows2); y++) {
+        at(x, y) = m.at(x, y);
+      }
+    }
+  }
+
+  const auto& at(const int x, const int y) const { return rows.at(y)[x]; }
+  auto& at(const int x, const int y) { return rows.at(y)[x]; }
+
+  friend auto operator*(const mat& a, const avec<float, X_Cols>& b_colvec) {
+    avec<float, Y_Rows> c_colvec;
+    for (int i = 0; i < y_rows; i++) {
+      c_colvec[i] = dot(a.rows.at(i), b_colvec);
+    }
+    return c_colvec;
+  }
+
+  friend auto operator*(const mat& a, const float b) {
+    mat c;
+    for (int x = 0; x < x_cols; x++) {
+      for (int y = 0; y < y_rows; y++) {
+        c.at(x, y) = a.at(x, y) * b;
+      }
+    }
+    return c;
+  }
+  friend auto operator/(const mat& a, const float b) { return a * (1 / b); }
+
+  template <int BCols, int BRows = X_Cols>
+  friend auto operator*(const mat& a, const mat<BRows, BCols>& b) {
+    const auto bt = transpose(b);
+    const auto& b_cols = bt.rows;
+
+    mat<Y_Rows, BCols> c;
+    for (int x = 0; x < BCols; x++) {
+      for (int y = 0; y < Y_Rows; y++) {
+        c.at(x, y) = dot(a.rows.at(y), b_cols.at(x));
+      }
+    }
+    return c;
+  }
+
+  // For e.g. similarity evaluation
+  friend auto operator-(const mat& a, const mat& b) {
+    mat c;
+    for (int y = 0; y < y_rows; y++) {
+      c.rows[y] = a.rows[y] - b.rows[y];
+    }
+    return c;
+  }
+};
+
+template <class M>
+inline float dotDifference(const M& a, const M& b) {
+  const auto c = a - b;
+  const auto d = c * avec<float, M::x_cols>(1);
+  const auto d2 = dot(d, d);
+  return d2;
+}
+template <class M>
+inline bool approx(const M& a, const M& b, const float eps = 0.0001) {
+  const auto errSquared = dotDifference(a, b);
+  return errSquared <= (eps * eps);
+}
+
+using mat3 = mat<3, 3>;
+using mat4 = mat<4, 4>;
+
+inline float determinant(const mat<1, 1>& m) { return m.at(0, 0); }
+template <class T>
+float determinant(const T& m) {
+  static_assert(T::x_cols == T::y_rows);
+
+  float ret = 0;
+  for (int i = 0; i < T::x_cols; i++) {
+    const auto cofact = cofactor(m, i, 0);
+    ret += m.at(i, 0) * cofact;
+  }
+  return ret;
+}
+
+// -
+
+template <class T>
+float cofactor(const T& m, const int x_col, const int y_row) {
+  ASSERT(0 <= x_col && x_col < T::x_cols);
+  ASSERT(0 <= y_row && y_row < T::y_rows);
+
+  auto cofactor = minor_val(m, x_col, y_row);
+  if ((x_col + y_row) % 2 == 1) {
+    cofactor *= -1;
+  }
+  return cofactor;
+}
+
+// -
+
+// Unfortunately, can't call this `minor(...)` because there is
+// `#define minor(dev) gnu_dev_minor (dev)`
+// in /usr/include/x86_64-linux-gnu/sys/sysmacros.h:62
+template <class T>
+float minor_val(const T& a, const int skip_x, const int skip_y) {
+  ASSERT(0 <= skip_x && skip_x < T::x_cols);
+  ASSERT(0 <= skip_y && skip_y < T::y_rows);
+
+  // A minor matrix is a matrix without its x_col and y_row.
+  mat<T::y_rows - 1, T::x_cols - 1> b;
+
+  int x_skips = 0;
+  for (int ax = 0; ax < T::x_cols; ax++) {
+    if (ax == skip_x) {
+      x_skips = 1;
+      continue;
+    }
+
+    int y_skips = 0;
+    for (int ay = 0; ay < T::y_rows; ay++) {
+      if (ay == skip_y) {
+        y_skips = 1;
+        continue;
+      }
+
+      b.at(ax - x_skips, ay - y_skips) = a.at(ax, ay);
+    }
+  }
+
+  const auto minor = determinant(b);
+  return minor;
+}
+
+// -
+
+/// The matrix of cofactors.
+template <class T>
+auto comatrix(const T& a) {
+  auto b = T{};
+  for (int x = 0; x < T::x_cols; x++) {
+    for (int y = 0; y < T::y_rows; y++) {
+      b.at(x, y) = cofactor(a, x, y);
+    }
+  }
+  return b;
+}
+
+// -
+
+template <class T>
+auto transpose(const T& a) {
+  auto b = mat<T::x_cols, T::y_rows>{};
+  for (int x = 0; x < T::x_cols; x++) {
+    for (int y = 0; y < T::y_rows; y++) {
+      b.at(y, x) = a.at(x, y);
+    }
+  }
+  return b;
+}
+
+// -
+
+template <class T>
+inline T inverse(const T& a) {
+  const auto det = determinant(a);
+  const auto comat = comatrix(a);
+  const auto adjugate = transpose(comat);
+  const auto inv = adjugate / det;
+  return inv;
+}
+
+// -
+
+template <class F>
+void ForEachIntWithin(const ivec3 size, const F& f) {
+  ivec3 p;
+  for (p.z(0); p.z() < size.z(); p.z(p.z() + 1)) {
+    for (p.y(0); p.y() < size.y(); p.y(p.y() + 1)) {
+      for (p.x(0); p.x() < size.x(); p.x(p.x() + 1)) {
+        f(p);
+      }
+    }
+  }
+}
+template <class F>
+void ForEachSampleWithin(const ivec3 size, const F& f) {
+  const auto div = vec3(size - 1);
+  ForEachIntWithin(size, [&](const ivec3& isrc) {
+    const auto fsrc = vec3(isrc) / div;
+    f(fsrc);
+  });
+}
+
+// -
+
+struct Lut3 final {
+  ivec3 size;
+  std::vector<vec3> data;
+
+  // -
+
+  static Lut3 Create(const ivec3 size) {
+    Lut3 lut;
+    lut.size = size;
+    lut.data.resize(size.x() * size.y() * size.z());
+    return lut;
+  }
+
+  // -
+
+  /// p: [0, N-1] (clamps)
+  size_t Index(ivec3 p) const {
+    const auto scales = ivec3({1, size.x(), size.x() * size.y()});
+    p = max(ivec3(0), min(p, size - 1));  // clamp
+    return dot(p, scales);
+  }
+
+  // -
+
+  template <class F>
+  void SetMap(const F& dstFromSrc01) {
+    ForEachIntWithin(size, [&](const ivec3 p) {
+      const auto i = Index(p);
+      const auto src01 = vec3(p) / vec3(size - 1);
+      const auto dstVal = dstFromSrc01(src01);
+      data.at(i) = dstVal;
+    });
+  }
+
+  // -
+
+  /// p: [0, N-1] (clamps)
+  vec3 Fetch(ivec3 p) const {
+    const auto i = Index(p);
+    return data.at(i);
+  }
+
+  /// in01: [0.0, 1.0] (clamps)
+  vec3 Sample(vec3 in01) const;
+};
+
+// -
+
+/**
+Naively, it would be ideal to map directly from ycbcr to rgb,
+but headroom and footroom are problematic: For e.g. narrow-range-8-bit,
+our naive LUT would start at absolute y=0/255. However, values only start
+at y=16/255, and depending on where your first LUT sample is, you might get
+very poor approximations for y=16/255.
+Further, even for full-range-8-bit, y=-0.5 is encoded as 1/255. U and v
+aren't *as* important as y, but we should try be accurate for the min and
+max values. Additionally, it would be embarassing to get whites/greys wrong,
+so preserving u=0.0 should also be a goal.
+Finally, when using non-linear transfer functions, the linear approximation of a
+point between two samples will be fairly inaccurate.
+We preserve min and max by choosing our input range such that min and max are
+the endpoints of their LUT axis.
+We preserve accuracy (at and around) mid by choosing odd sizes for dimentions.
+
+But also, the LUT is surprisingly robust, so check if the simple version works
+before adding complexity!
+**/
+
+struct ColorspaceTransform final {
+  ColorspaceDesc srcSpace;
+  ColorspaceDesc dstSpace;
+  mat4 srcRgbTfFromSrc;
+  std::optional<PiecewiseGammaDesc> srcTf;
+  mat3 dstRgbLinFromSrcRgbLin;
+  std::optional<PiecewiseGammaDesc> dstTf;
+  mat4 dstFromDstRgbTf;
+
+  static ColorspaceTransform Create(const ColorspaceDesc& src,
+                                    const ColorspaceDesc& dst);
+
+  // -
+
+  vec3 DstFromSrc(vec3 src) const;
+
+  std::optional<mat4> ToMat4() const;
+
+  Lut3 ToLut3(const ivec3 size) const;
+  Lut3 ToLut3() const {
+    auto defaultSize = ivec3({31, 31, 15});  // Order of importance: G, R, B
+    if (srcSpace.yuv) {
+      defaultSize = ivec3({31, 15, 31});  // Y, Cb, Cr
+    }
+    return ToLut3(defaultSize);
+  }
+};
+
+// -
+
+struct RgbTransferTables {
+  std::vector<float> r;
+  std::vector<float> g;
+  std::vector<float> b;
+};
+float GuessGamma(const std::vector<float>& vals, float exp_guess = 1.0);
+
+static constexpr auto D65 = vec2{{0.3127, 0.3290}};
+static constexpr auto D50 = vec2{{0.34567, 0.35850}};
+mat3 XyzAFromXyzB_BradfordLinear(const vec2 xyA, const vec2 xyB);
+
+// -
+
+struct ColorProfileDesc {
+  // ICC profiles are phrased as PCS-from-encoded (PCS is CIEXYZ-D50)
+  // However, all of our colorspaces are D65, so let's normalize to that,
+  // even though it's a reversible transform.
+  color::mat4 rgbFromYcbcr = color::mat4::Identity();
+  RgbTransferTables linearFromTf;
+  color::mat3 xyzd65FromLinearRgb = color::mat3::Identity();
+
+  static ColorProfileDesc From(const ColorspaceDesc&);
+  static ColorProfileDesc From(const qcms_profile&);
+};
+
+template <class C>
+inline float SampleOutByIn(const C& outByIn, const float in) {
+  switch (outByIn.size()) {
+    case 0:
+      return in;
+    case 1:
+      return outByIn.at(0);
+  }
+  MOZ_ASSERT(outByIn.size() >= 2);
+  const auto begin = outByIn.begin();
+
+  const auto in0i = size_t(floorf(in * (outByIn.size() - 1)));
+  const auto out0_itr = begin + std::min(in0i, outByIn.size() - 2);
+
+  const auto in0 = float(out0_itr - begin) / (outByIn.size() - 1);
+  const auto out0 = *out0_itr;
+  const auto d_in = float(1) / (outByIn.size() - 1);
+  const auto d_out = *(out0_itr + 1) - *out0_itr;
+
+  const auto out = out0 + (d_out / d_in) * (in - in0);
+  // printf("SampleOutByIn(%f)->%f\n", in, out);
+  return out;
+}
+
+template <class C>
+inline float SampleInByOut(const C& outByIn, const float out) {
+  MOZ_ASSERT(outByIn.size() >= 2);
+  const auto begin = outByIn.begin();
+
+  const auto out0_itr = std::lower_bound(begin + 1, outByIn.end() - 1, out) - 1;
+
+  const auto in0 = float(out0_itr - begin) / (outByIn.size() - 1);
+  const auto out0 = *out0_itr;
+  const auto d_in = float(1) / (outByIn.size() - 1);
+  const auto d_out = *(out0_itr + 1) - *out0_itr;
+
+  // printf("%f + (%f / %f) * (%f - %f)\n", in0, d_in, d_out, out, out0);
+  const auto in = in0 + (d_in / d_out) * (out - out0);
+  // printf("SampleInByOut(%f)->%f\n", out, in);
+  return in;
+}
+
+template <class C, class FnLessEqualT = std::less_equal<typename C::value_type>>
+inline bool IsMonotonic(const C& vals, const FnLessEqualT& LessEqual = {}) {
+  bool ok = true;
+  const auto begin = vals.begin();
+  for (size_t i = 1; i < vals.size(); i++) {
+    const auto itr = begin + i;
+    ok &= LessEqual(*(itr - 1), *itr);
+    // Assert(true, [&]() {
+    //     return prints("[%zu]->%f <= [%zu]->%f", i-1, *(itr-1), i, *itr);
+    // });
+  }
+  return ok;
+}
+
+template <class T, class I>
+inline std::optional<I> SeekNeq(const T& ref, const I first, const I last) {
+  const auto inc = (last - first) > 0 ? 1 : -1;
+  auto itr = first;
+  while (true) {
+    if (*itr != ref) return itr;
+    if (itr == last) return {};
+    itr += inc;
+  }
+}
+
+template <class T>
+struct TwoPoints {
+  struct {
+    T x;
+    T y;
+  } p0;
+  struct {
+    T x;
+    T y;
+  } p1;
+
+  T y(const T x) const {
+    const auto dx = p1.x - p0.x;
+    const auto dy = p1.y - p0.y;
+    return p0.y + dy / dx * (x - p0.x);
+  }
+};
+
+/// Fills `vals` with `x:[0..vals.size()-1] => line.y(x)`.
+template <class T>
+static void LinearFill(T& vals, const TwoPoints<float>& line) {
+  float x = -1;
+  for (auto& val : vals) {
+    x += 1;
+    val = line.y(x);
+  }
+}
+
+// -
+
+inline void DequantizeMonotonic(const Span<float> vals) {
+  MOZ_ASSERT(IsMonotonic(vals));
+
+  const auto first = vals.begin();
+  const auto end = vals.end();
+  if (first == end) return;
+  const auto last = end - 1;
+  if (first == last) return;
+
+  // Three monotonic cases:
+  // 1. [0,0,0,0]
+  // 2. [0,0,1,1]
+  // 3. [0,1,1,2]
+
+  const auto body_first = SeekNeq(*first, first, last);
+  if (!body_first) {
+    // E.g. [0,0,0,0]
+    return;
+  }
+
+  const auto body_last = SeekNeq(*last, last, *body_first);
+  if (!body_last) {
+    // E.g. [0,0,1,1]
+    // This isn't the most accurate, but close enough.
+    // print("#2: %s", to_str(vals).c_str());
+    LinearFill(vals, {
+                         {0, *first},
+                         {float(vals.size() - 1), *last},
+                     });
+    // print(" -> %s\n", to_str(vals).c_str());
+    return;
+  }
+
+  // E.g. [0,1,1,2]
+  //         ^^^ body
+  // => f(0.5)->0.5, f(2.5)->1.5
+  // => f(x) = f(x0) + (x-x0) * (f(x1) - f(x0)) / (x1-x0)
+  // => f(x) = f(x0) + (x-x0) * dfdx
+
+  const auto head_end = *body_first;
+  const auto head = vals.subspan(0, head_end - vals.begin());
+  const auto tail_begin = *body_last + 1;
+  const auto tail = vals.subspan(tail_begin - vals.begin());
+  // print("head tail: %s %s\n",
+  //     to_str(head).c_str(),
+  //     to_str(tail).c_str());
+
+  // const auto body = vals->subspan(head.size(), vals->size()-tail.size());
+  auto next_part_first = head_end;
+  while (next_part_first != tail_begin) {
+    const auto part_first = next_part_first;
+    // print("part_first: %f\n", *part_first);
+    next_part_first = *SeekNeq(*part_first, part_first, tail_begin);
+    // print("next_part_first: %f\n", *next_part_first);
+    const auto part =
+        Span<float>{part_first, size_t(next_part_first - part_first)};
+    // print("part: %s\n", to_str(part).c_str());
+    const auto prev_part_last = part_first - 1;
+    const auto part_last = next_part_first - 1;
+    const auto line = TwoPoints<float>{
+        {-0.5, (*prev_part_last + *part_first) / 2},
+        {part.size() - 0.5f, (*part_last + *next_part_first) / 2},
+    };
+    LinearFill(part, line);
+  }
+
+  static constexpr bool INFER_HEAD_TAIL_FROM_BODY_EDGE = false;
+  // Basically ignore contents of head and tail, and infer from edges of body.
+  // print("3: %s\n", to_str(vals).c_str());
+  if (!IsMonotonic(head, std::less<float>{})) {
+    if (!INFER_HEAD_TAIL_FROM_BODY_EDGE) {
+      LinearFill(head,
+                 {
+                     {0, *head.begin()},
+                     {head.size() - 0.5f, (*(head.end() - 1) + *head_end) / 2},
+                 });
+    } else {
+      LinearFill(head, {
+                           {head.size() + 0.0f, *head_end},
+                           {head.size() + 1.0f, *(head_end + 1)},
+                       });
+    }
+  }
+  if (!IsMonotonic(tail, std::less<float>{})) {
+    if (!INFER_HEAD_TAIL_FROM_BODY_EDGE) {
+      LinearFill(tail, {
+                           {-0.5, (*(tail_begin - 1) + *tail.begin()) / 2},
+                           {tail.size() - 1.0f, *(tail.end() - 1)},
+                       });
+    } else {
+      LinearFill(tail, {
+                           {-2.0f, *(tail_begin - 2)},
+                           {-1.0f, *(tail_begin - 1)},
+                       });
+    }
+  }
+  // print("3: %s\n", to_str(vals).c_str());
+  MOZ_ASSERT(IsMonotonic(vals, std::less<float>{}));
+
+  // Rescale, because we tend to lose range.
+  static constexpr bool RESCALE = false;
+  if (RESCALE) {
+    const auto firstv = *first;
+    const auto lastv = *last;
+    for (auto& val : vals) {
+      val = (val - firstv) / (lastv - firstv);
+    }
+  }
+  // print("4: %s\n", to_str(vals).c_str());
+}
+
+template <class In, class Out>
+static void InvertLut(const In& lut, Out* const out_invertedLut) {
+  MOZ_ASSERT(IsMonotonic(lut));
+  auto plut = &lut;
+  auto vec = std::vector<float>{};
+  if (!IsMonotonic(lut, std::less<float>{})) {
+    // print("Not strictly monotonic...\n");
+    vec.assign(lut.begin(), lut.end());
+    DequantizeMonotonic(vec);
+    plut = &vec;
+    // print("  Now strictly monotonic: %i: %s\n",
+    //   int(IsMonotonic(*plut, std::less<float>{})), to_str(*plut).c_str());
+    MOZ_ASSERT(IsMonotonic(*plut, std::less<float>{}));
+  }
+  MOZ_ASSERT(plut->size() >= 2);
+
+  auto& ret = *out_invertedLut;
+  for (size_t i_out = 0; i_out < ret.size(); i_out++) {
+    const auto f_out = i_out / float(ret.size() - 1);
+    const auto f_in = SampleInByOut(*plut, f_out);
+    ret[i_out] = f_in;
+  }
+
+  MOZ_ASSERT(IsMonotonic(ret));
+  MOZ_ASSERT(IsMonotonic(ret, std::less<float>{}));
+}
+
+// -
+
+struct ColorProfileConversionDesc {
+  // ICC profiles are phrased as PCS-from-encoded (PCS is CIEXYZ-D50)
+  color::mat4 srcRgbFromSrcYuv = color::mat4::Identity();
+  RgbTransferTables srcLinearFromSrcTf;
+  color::mat3 dstLinearFromSrcLinear = color::mat3::Identity();
+  RgbTransferTables dstTfFromDstLinear;
+
+  struct FromDesc {
+    ColorProfileDesc src;
+    ColorProfileDesc dst;
+  };
+  static ColorProfileConversionDesc From(const FromDesc&);
+
+  vec3 Apply(const vec3 src) const {
+    const auto srcRgb = vec3(srcRgbFromSrcYuv * vec4(src, 1));
+    const auto srcLinear = vec3{{
+        SampleOutByIn(srcLinearFromSrcTf.r, srcRgb.x()),
+        SampleOutByIn(srcLinearFromSrcTf.g, srcRgb.y()),
+        SampleOutByIn(srcLinearFromSrcTf.b, srcRgb.z()),
+    }};
+    const auto dstLinear = dstLinearFromSrcLinear * srcLinear;
+    const auto dstRgb = vec3{{
+        SampleOutByIn(dstTfFromDstLinear.r, dstLinear.x()),
+        SampleOutByIn(dstTfFromDstLinear.g, dstLinear.y()),
+        SampleOutByIn(dstTfFromDstLinear.b, dstLinear.z()),
+    }};
+    return dstRgb;
+  }
+};
+
+}  // namespace mozilla::color
+
+#undef ASSERT
+
+#endif  // MOZILLA_GFX_GL_COLORSPACES_H_
diff --git a/gfx/gl/ForceDiscreteGPUHelperCGL.h b/gfx/gl/ForceDiscreteGPUHelperCGL.h
new file mode 100644
index 0000000000..523d76def3
--- /dev/null
+++ b/gfx/gl/ForceDiscreteGPUHelperCGL.h
@@ -0,0 +1,34 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ForceDiscreteGPUHelperCGL_h_
+#define ForceDiscreteGPUHelperCGL_h_
+
+#include <OpenGL/OpenGL.h>
+
+/** This RAII helper guarantees that we're on the discrete GPU during its
+ * lifetime.
+ *
+ * As long as any ForceDiscreteGPUHelperCGL object is alive, we're on the
+ * discrete GPU.
+ */
+class ForceDiscreteGPUHelperCGL {
+  CGLPixelFormatObj mPixelFormatObj;
+
+ public:
+  ForceDiscreteGPUHelperCGL() : mPixelFormatObj(nullptr) {
+    // the code in this function is taken from Chromium,
+    // src/ui/gfx/gl/gl_context_cgl.cc, r122013
+    // BSD-style license, (c) The Chromium Authors
+    CGLPixelFormatAttribute attribs[1];
+    attribs[0] = static_cast<CGLPixelFormatAttribute>(0);
+    GLint num_pixel_formats = 0;
+    CGLChoosePixelFormat(attribs, &mPixelFormatObj, &num_pixel_formats);
+  }
+
+  ~ForceDiscreteGPUHelperCGL() { CGLReleasePixelFormat(mPixelFormatObj); }
+};
+
+#endif  // ForceDiscreteGPUHelperCGL_h_
diff --git a/gfx/gl/GLBlitHelper.cpp b/gfx/gl/GLBlitHelper.cpp
new file mode 100644
index 0000000000..a83178596e
--- /dev/null
+++ b/gfx/gl/GLBlitHelper.cpp
@@ -0,0 +1,1682 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLBlitHelper.h"
+
+#include "gfxEnv.h"
+#include "gfxUtils.h"
+#include "GLContext.h"
+#include "GLScreenBuffer.h"
+#include "GPUVideoImage.h"
+#include "HeapCopyOfStackArray.h"
+#include "ImageContainer.h"
+#include "ScopedGLHelpers.h"
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Casting.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/StaticPrefs_gfx.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/gfx/Matrix.h"
+#include "mozilla/layers/ImageDataSerializer.h"
+#include "mozilla/layers/LayersSurfaces.h"
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "AndroidSurfaceTexture.h"
+#  include "GLLibraryEGL.h"
+#endif
+
+#ifdef XP_MACOSX
+#  include "GLContextCGL.h"
+#  include "MacIOSurfaceImage.h"
+#endif
+
+#ifdef XP_WIN
+#  include "mozilla/layers/D3D11ShareHandleImage.h"
+#  include "mozilla/layers/D3D11TextureIMFSampleImage.h"
+#  include "mozilla/layers/D3D11YCbCrImage.h"
+#endif
+
+#ifdef MOZ_WAYLAND
+#  include "mozilla/layers/DMABUFSurfaceImage.h"
+#  include "mozilla/widget/DMABufSurface.h"
+#endif
+
+using mozilla::layers::PlanarYCbCrData;
+using mozilla::layers::PlanarYCbCrImage;
+
+namespace mozilla {
+namespace gl {
+
+// --
+
+static const char kFragPreprocHeader[] = R"(
+  #ifdef GL_ES
+    #ifdef GL_FRAGMENT_PRECISION_HIGH
+      #define MAXP highp
+    #endif
+  #else
+    #define MAXP highp
+  #endif
+  #ifndef MAXP
+    #define MAXP mediump
+  #endif
+
+  #if __VERSION__ >= 130
+    #define VARYING in
+  #else
+    #define VARYING varying
+  #endif
+  #if __VERSION__ >= 120
+    #define MAT4X3 mat4x3
+  #else
+    #define MAT4X3 mat4
+  #endif
+)";
+
+// -
+
+const char* const kFragHeader_Tex2D = R"(
+    #define SAMPLER sampler2D
+    #if __VERSION__ >= 130
+        #define TEXTURE texture
+    #else
+        #define TEXTURE texture2D
+    #endif
+)";
+const char* const kFragHeader_Tex2DRect = R"(
+    #define SAMPLER sampler2DRect
+    #if __VERSION__ >= 130
+        #define TEXTURE texture
+    #else
+        #define TEXTURE texture2DRect
+    #endif
+)";
+const char* const kFragHeader_TexExt = R"(
+    #extension GL_OES_EGL_image_external : enable
+    #extension GL_OES_EGL_image_external_essl3 : enable
+    #if __VERSION__ >= 130
+        #define TEXTURE texture
+    #else
+        #define TEXTURE texture2D
+    #endif
+    #define SAMPLER samplerExternalOES
+)";
+
+// -
+
+static const char kFragDeclHeader[] = R"(
+  precision PRECISION float;
+  #if __VERSION__ >= 130
+    #define FRAG_COLOR oFragColor
+    out vec4 FRAG_COLOR;
+  #else
+    #define FRAG_COLOR gl_FragColor
+  #endif
+)";
+
+// -
+
+const char* const kFragSample_OnePlane = R"(
+  VARYING mediump vec2 vTexCoord0;
+  uniform PRECISION SAMPLER uTex0;
+
+  vec4 metaSample() {
+    vec4 src = TEXTURE(uTex0, vTexCoord0);
+    return src;
+  }
+)";
+// Ideally this would just change the color-matrix it uses, but this is
+// acceptable debt for now.
+// `extern` so that we don't get ifdef-dependent const-var-unused Werrors.
+extern const char* const kFragSample_OnePlane_YUV_via_GBR = R"(
+  VARYING mediump vec2 vTexCoord0;
+  uniform PRECISION SAMPLER uTex0;
+
+  vec4 metaSample() {
+    vec4 yuva = TEXTURE(uTex0, vTexCoord0).gbra;
+    return yuva;
+  }
+)";
+const char* const kFragSample_TwoPlane = R"(
+  VARYING mediump vec2 vTexCoord0;
+  VARYING mediump vec2 vTexCoord1;
+  uniform PRECISION SAMPLER uTex0;
+  uniform PRECISION SAMPLER uTex1;
+
+  vec4 metaSample() {
+    vec4 src = TEXTURE(uTex0, vTexCoord0); // Keep r and a.
+    src.gb = TEXTURE(uTex1, vTexCoord1).rg;
+    return src;
+  }
+)";
+const char* const kFragSample_ThreePlane = R"(
+  VARYING mediump vec2 vTexCoord0;
+  VARYING mediump vec2 vTexCoord1;
+  uniform PRECISION SAMPLER uTex0;
+  uniform PRECISION SAMPLER uTex1;
+  uniform PRECISION SAMPLER uTex2;
+
+  vec4 metaSample() {
+    vec4 src = TEXTURE(uTex0, vTexCoord0); // Keep r and a.
+    src.g = TEXTURE(uTex1, vTexCoord1).r;
+    src.b = TEXTURE(uTex2, vTexCoord1).r;
+    return src;
+  }
+)";
+
+// -
+
+const char* const kFragConvert_None = R"(
+  vec3 metaConvert(vec3 src) {
+    return src;
+  }
+)";
+const char* const kFragConvert_BGR = R"(
+  vec3 metaConvert(vec3 src) {
+    return src.bgr;
+  }
+)";
+const char* const kFragConvert_ColorMatrix = R"(
+  uniform mediump MAT4X3 uColorMatrix;
+
+  vec3 metaConvert(vec3 src) {
+    return (uColorMatrix * vec4(src, 1)).rgb;
+  }
+)";
+const char* const kFragConvert_ColorLut = R"(
+  uniform PRECISION sampler3D uColorLut;
+
+  vec3 metaConvert(vec3 src) {
+    // Half-texel filtering hazard!
+    // E.g. For texture size of 2,
+    // E.g. 0.5/2=0.25 is still sampling 100% of texel 0, 0% of texel 1.
+    // For the LUT, we need 0.5/2=0.25 to filter 25/75 texel 0 and 1.
+    // That is, we need to adjust our sampling point such that it's 0.25 of the
+    // way from texel 0's center to texel 1's center.
+    // We need, for N=2:
+    // v=0.0|N=2 => v'=0.5/2
+    // v=1.0|N=2 => v'=1.5/2
+    // For N=3:
+    // v=0.0|N=3 => v'=0.5/3
+    // v=1.0|N=3 => v'=2.5/3
+    // => v' = ( 0.5 + v * (3 - 1) )/3
+    vec3 size = vec3(textureSize(uColorLut, 0));
+    src = (0.5 + src * (size - 1.0)) / size;
+    return texture(uColorLut, src).rgb;
+  }
+)";
+
+// -
+
+const char* const kFragMixin_AlphaMultColors = R"(
+  #define MIXIN_ALPHA_MULT_COLORS
+)";
+const char* const kFragMixin_AlphaClampColors = R"(
+  #define MIXIN_ALPHA_CLAMP_COLORS
+)";
+const char* const kFragMixin_AlphaOne = R"(
+  #define MIXIN_ALPHA_ONE
+)";
+
+// -
+
+static const char kFragBody[] = R"(
+  void main(void) {
+    vec4 src = metaSample();
+    vec4 dst = vec4(metaConvert(src.rgb), src.a);
+
+  #ifdef MIXIN_ALPHA_MULT_COLORS
+    dst.rgb *= dst.a;
+  #endif
+  #ifdef MIXIN_ALPHA_CLAMP_COLORS
+    dst.rgb = min(dst.rgb, vec3(dst.a)); // Ensure valid premult-alpha colors.
+  #endif
+  #ifdef MIXIN_ALPHA_ONE
+    dst.a = 1.0;
+  #endif
+
+    FRAG_COLOR = dst;
+  }
+)";
+
+// --
+
+Mat3 SubRectMat3(const float x, const float y, const float w, const float h) {
+  auto ret = Mat3{};
+  ret.at(0, 0) = w;
+  ret.at(1, 1) = h;
+  ret.at(2, 0) = x;
+  ret.at(2, 1) = y;
+  ret.at(2, 2) = 1.0f;
+  return ret;
+}
+
+Mat3 SubRectMat3(const gfx::IntRect& subrect, const gfx::IntSize& size) {
+  return SubRectMat3(float(subrect.X()) / size.width,
+                     float(subrect.Y()) / size.height,
+                     float(subrect.Width()) / size.width,
+                     float(subrect.Height()) / size.height);
+}
+
+Mat3 SubRectMat3(const gfx::IntRect& bigSubrect, const gfx::IntSize& smallSize,
+                 const gfx::IntSize& divisors) {
+  const float x = float(bigSubrect.X()) / divisors.width;
+  const float y = float(bigSubrect.Y()) / divisors.height;
+  const float w = float(bigSubrect.Width()) / divisors.width;
+  const float h = float(bigSubrect.Height()) / divisors.height;
+  return SubRectMat3(x / smallSize.width, y / smallSize.height,
+                     w / smallSize.width, h / smallSize.height);
+}
+
+// --
+
+ScopedSaveMultiTex::ScopedSaveMultiTex(GLContext* const gl,
+                                       const std::vector<uint8_t>& texUnits,
+                                       const GLenum texTarget)
+    : mGL(*gl),
+      mTexUnits(texUnits),
+      mTexTarget(texTarget),
+      mOldTexUnit(mGL.GetIntAs<GLenum>(LOCAL_GL_ACTIVE_TEXTURE)) {
+  MOZ_RELEASE_ASSERT(texUnits.size() >= 1);
+
+  GLenum texBinding;
+  switch (mTexTarget) {
+    case LOCAL_GL_TEXTURE_2D:
+      texBinding = LOCAL_GL_TEXTURE_BINDING_2D;
+      break;
+    case LOCAL_GL_TEXTURE_3D:
+      texBinding = LOCAL_GL_TEXTURE_BINDING_3D;
+      break;
+    case LOCAL_GL_TEXTURE_RECTANGLE:
+      texBinding = LOCAL_GL_TEXTURE_BINDING_RECTANGLE;
+      break;
+    case LOCAL_GL_TEXTURE_EXTERNAL:
+      texBinding = LOCAL_GL_TEXTURE_BINDING_EXTERNAL;
+      break;
+    default:
+      gfxCriticalError() << "Unhandled texTarget: " << texTarget;
+      MOZ_CRASH();
+  }
+
+  for (const auto i : IntegerRange(mTexUnits.size())) {
+    const auto& unit = mTexUnits[i];
+    mGL.fActiveTexture(LOCAL_GL_TEXTURE0 + unit);
+    if (mGL.IsSupported(GLFeature::sampler_objects)) {
+      mOldTexSampler[i] = mGL.GetIntAs<GLuint>(LOCAL_GL_SAMPLER_BINDING);
+      mGL.fBindSampler(unit, 0);
+    }
+    mOldTex[i] = mGL.GetIntAs<GLuint>(texBinding);
+  }
+}
+
+ScopedSaveMultiTex::~ScopedSaveMultiTex() {
+  // Unbind in reverse order, in case we have repeats.
+  // Order matters because we unbound samplers during ctor, so now we have to
+  // make sure we rebind them in the right order.
+  for (const auto i : Reversed(IntegerRange(mTexUnits.size()))) {
+    const auto& unit = mTexUnits[i];
+    mGL.fActiveTexture(LOCAL_GL_TEXTURE0 + unit);
+    if (mGL.IsSupported(GLFeature::sampler_objects)) {
+      mGL.fBindSampler(unit, mOldTexSampler[i]);
+    }
+    mGL.fBindTexture(mTexTarget, mOldTex[i]);
+  }
+  mGL.fActiveTexture(mOldTexUnit);
+}
+
+// --
+
+class ScopedBindArrayBuffer final {
+ public:
+  GLContext& mGL;
+  const GLuint mOldVBO;
+
+  ScopedBindArrayBuffer(GLContext* const gl, const GLuint vbo)
+      : mGL(*gl), mOldVBO(mGL.GetIntAs<GLuint>(LOCAL_GL_ARRAY_BUFFER_BINDING)) {
+    mGL.fBindBuffer(LOCAL_GL_ARRAY_BUFFER, vbo);
+  }
+
+  ~ScopedBindArrayBuffer() { mGL.fBindBuffer(LOCAL_GL_ARRAY_BUFFER, mOldVBO); }
+};
+
+// --
+
+class ScopedShader final {
+  GLContext& mGL;
+  const GLuint mName;
+
+ public:
+  ScopedShader(GLContext* const gl, const GLenum shaderType)
+      : mGL(*gl), mName(mGL.fCreateShader(shaderType)) {}
+
+  ~ScopedShader() { mGL.fDeleteShader(mName); }
+
+  operator GLuint() const { return mName; }
+};
+
+// --
+
+class SaveRestoreCurrentProgram final {
+  GLContext& mGL;
+  const GLuint mOld;
+
+ public:
+  explicit SaveRestoreCurrentProgram(GLContext* const gl)
+      : mGL(*gl), mOld(mGL.GetIntAs<GLuint>(LOCAL_GL_CURRENT_PROGRAM)) {}
+
+  ~SaveRestoreCurrentProgram() { mGL.fUseProgram(mOld); }
+};
+
+// --
+
+class ScopedDrawBlitState final {
+  GLContext& mGL;
+
+  const bool blend;
+  const bool cullFace;
+  const bool depthTest;
+  const bool dither;
+  const bool polyOffsFill;
+  const bool sampleAToC;
+  const bool sampleCover;
+  const bool scissor;
+  const bool stencil;
+  Maybe<bool> rasterizerDiscard;
+
+  realGLboolean colorMask[4];
+  GLint viewport[4];
+
+ public:
+  ScopedDrawBlitState(GLContext* const gl, const gfx::IntSize& destSize)
+      : mGL(*gl),
+        blend(mGL.PushEnabled(LOCAL_GL_BLEND, false)),
+        cullFace(mGL.PushEnabled(LOCAL_GL_CULL_FACE, false)),
+        depthTest(mGL.PushEnabled(LOCAL_GL_DEPTH_TEST, false)),
+        dither(mGL.PushEnabled(LOCAL_GL_DITHER, true)),
+        polyOffsFill(mGL.PushEnabled(LOCAL_GL_POLYGON_OFFSET_FILL, false)),
+        sampleAToC(mGL.PushEnabled(LOCAL_GL_SAMPLE_ALPHA_TO_COVERAGE, false)),
+        sampleCover(mGL.PushEnabled(LOCAL_GL_SAMPLE_COVERAGE, false)),
+        scissor(mGL.PushEnabled(LOCAL_GL_SCISSOR_TEST, false)),
+        stencil(mGL.PushEnabled(LOCAL_GL_STENCIL_TEST, false)) {
+    if (mGL.IsSupported(GLFeature::transform_feedback2)) {
+      // Technically transform_feedback2 requires transform_feedback, which
+      // actually adds RASTERIZER_DISCARD.
+      rasterizerDiscard =
+          Some(mGL.PushEnabled(LOCAL_GL_RASTERIZER_DISCARD, false));
+    }
+
+    mGL.fGetBooleanv(LOCAL_GL_COLOR_WRITEMASK, colorMask);
+    if (mGL.IsSupported(GLFeature::draw_buffers_indexed)) {
+      mGL.fColorMaski(0, true, true, true, true);
+    } else {
+      mGL.fColorMask(true, true, true, true);
+    }
+
+    mGL.fGetIntegerv(LOCAL_GL_VIEWPORT, viewport);
+    MOZ_ASSERT(destSize.width && destSize.height);
+    mGL.fViewport(0, 0, destSize.width, destSize.height);
+  }
+
+  ~ScopedDrawBlitState() {
+    mGL.SetEnabled(LOCAL_GL_BLEND, blend);
+    mGL.SetEnabled(LOCAL_GL_CULL_FACE, cullFace);
+    mGL.SetEnabled(LOCAL_GL_DEPTH_TEST, depthTest);
+    mGL.SetEnabled(LOCAL_GL_DITHER, dither);
+    mGL.SetEnabled(LOCAL_GL_POLYGON_OFFSET_FILL, polyOffsFill);
+    mGL.SetEnabled(LOCAL_GL_SAMPLE_ALPHA_TO_COVERAGE, sampleAToC);
+    mGL.SetEnabled(LOCAL_GL_SAMPLE_COVERAGE, sampleCover);
+    mGL.SetEnabled(LOCAL_GL_SCISSOR_TEST, scissor);
+    mGL.SetEnabled(LOCAL_GL_STENCIL_TEST, stencil);
+    if (rasterizerDiscard) {
+      mGL.SetEnabled(LOCAL_GL_RASTERIZER_DISCARD, rasterizerDiscard.value());
+    }
+
+    if (mGL.IsSupported(GLFeature::draw_buffers_indexed)) {
+      mGL.fColorMaski(0, colorMask[0], colorMask[1], colorMask[2],
+                      colorMask[3]);
+    } else {
+      mGL.fColorMask(colorMask[0], colorMask[1], colorMask[2], colorMask[3]);
+    }
+    mGL.fViewport(viewport[0], viewport[1], viewport[2], viewport[3]);
+  }
+};
+
+// --
+
+DrawBlitProg::DrawBlitProg(const GLBlitHelper* const parent, const GLuint prog)
+    : mParent(*parent),
+      mProg(prog),
+      mLoc_uDestMatrix(mParent.mGL->fGetUniformLocation(mProg, "uDestMatrix")),
+      mLoc_uTexMatrix0(mParent.mGL->fGetUniformLocation(mProg, "uTexMatrix0")),
+      mLoc_uTexMatrix1(mParent.mGL->fGetUniformLocation(mProg, "uTexMatrix1")),
+      mLoc_uColorLut(mParent.mGL->fGetUniformLocation(mProg, "uColorLut")),
+      mLoc_uColorMatrix(
+          mParent.mGL->fGetUniformLocation(mProg, "uColorMatrix")) {
+  const auto& gl = mParent.mGL;
+  MOZ_GL_ASSERT(gl, mLoc_uDestMatrix != -1);  // Required
+  MOZ_GL_ASSERT(gl, mLoc_uTexMatrix0 != -1);  // Required
+  if (mLoc_uColorMatrix != -1) {
+    MOZ_GL_ASSERT(gl, mLoc_uTexMatrix1 != -1);
+
+    int32_t numActiveUniforms = 0;
+    gl->fGetProgramiv(mProg, LOCAL_GL_ACTIVE_UNIFORMS, &numActiveUniforms);
+
+    const size_t kMaxNameSize = 32;
+    char name[kMaxNameSize] = {0};
+    GLint size = 0;
+    GLenum type = 0;
+    for (int32_t i = 0; i < numActiveUniforms; i++) {
+      gl->fGetActiveUniform(mProg, i, kMaxNameSize, nullptr, &size, &type,
+                            name);
+      if (strcmp("uColorMatrix", name) == 0) {
+        mType_uColorMatrix = type;
+        break;
+      }
+    }
+    MOZ_GL_ASSERT(gl, mType_uColorMatrix);
+  }
+}
+
+DrawBlitProg::~DrawBlitProg() {
+  const auto& gl = mParent.mGL;
+  if (!gl->MakeCurrent()) return;
+
+  gl->fDeleteProgram(mProg);
+}
+
+void DrawBlitProg::Draw(const BaseArgs& args,
+                        const YUVArgs* const argsYUV) const {
+  const auto& gl = mParent.mGL;
+
+  const SaveRestoreCurrentProgram oldProg(gl);
+  gl->fUseProgram(mProg);
+
+  // --
+
+  Mat3 destMatrix;
+  if (args.destRect) {
+    const auto& destRect = args.destRect.value();
+    destMatrix = SubRectMat3(destRect.X() / args.destSize.width,
+                             destRect.Y() / args.destSize.height,
+                             destRect.Width() / args.destSize.width,
+                             destRect.Height() / args.destSize.height);
+  } else {
+    destMatrix = Mat3::I();
+  }
+
+  if (args.yFlip) {
+    // Apply the y-flip matrix before the destMatrix.
+    // That is, flip y=[0-1] to y=[1-0] before we restrict to the destRect.
+    destMatrix.at(2, 1) += destMatrix.at(1, 1);
+    destMatrix.at(1, 1) *= -1.0f;
+  }
+
+  gl->fUniformMatrix3fv(mLoc_uDestMatrix, 1, false, destMatrix.m);
+  gl->fUniformMatrix3fv(mLoc_uTexMatrix0, 1, false, args.texMatrix0.m);
+
+  if (args.texUnitForColorLut) {
+    gl->fUniform1i(mLoc_uColorLut,
+                   AssertedCast<GLint>(*args.texUnitForColorLut));
+  }
+
+  MOZ_ASSERT(bool(argsYUV) == (mLoc_uColorMatrix != -1));
+  if (argsYUV) {
+    gl->fUniformMatrix3fv(mLoc_uTexMatrix1, 1, false, argsYUV->texMatrix1.m);
+
+    if (mLoc_uColorMatrix != -1) {
+      const auto& colorMatrix =
+          gfxUtils::YuvToRgbMatrix4x4ColumnMajor(*argsYUV->colorSpaceForMatrix);
+      float mat4x3[4 * 3];
+      switch (mType_uColorMatrix) {
+        case LOCAL_GL_FLOAT_MAT4:
+          gl->fUniformMatrix4fv(mLoc_uColorMatrix, 1, false, colorMatrix);
+          break;
+        case LOCAL_GL_FLOAT_MAT4x3:
+          for (int x = 0; x < 4; x++) {
+            for (int y = 0; y < 3; y++) {
+              mat4x3[3 * x + y] = colorMatrix[4 * x + y];
+            }
+          }
+          gl->fUniformMatrix4x3fv(mLoc_uColorMatrix, 1, false, mat4x3);
+          break;
+        default:
+          gfxCriticalError()
+              << "Bad mType_uColorMatrix: " << gfx::hexa(mType_uColorMatrix);
+      }
+    }
+  }
+
+  // --
+
+  const ScopedDrawBlitState drawState(gl, args.destSize);
+
+  GLuint oldVAO;
+  GLint vaa0Enabled;
+  GLint vaa0Size;
+  GLenum vaa0Type;
+  GLint vaa0Normalized;
+  GLsizei vaa0Stride;
+  GLvoid* vaa0Pointer;
+  GLuint vaa0Buffer;
+  if (mParent.mQuadVAO) {
+    oldVAO = gl->GetIntAs<GLuint>(LOCAL_GL_VERTEX_ARRAY_BINDING);
+    gl->fBindVertexArray(mParent.mQuadVAO);
+  } else {
+    // clang-format off
+    gl->fGetVertexAttribiv(0, LOCAL_GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING, (GLint*)&vaa0Buffer);
+    gl->fGetVertexAttribiv(0, LOCAL_GL_VERTEX_ATTRIB_ARRAY_ENABLED, &vaa0Enabled);
+    gl->fGetVertexAttribiv(0, LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE, &vaa0Size);
+    gl->fGetVertexAttribiv(0, LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE, (GLint*)&vaa0Type);
+    gl->fGetVertexAttribiv(0, LOCAL_GL_VERTEX_ATTRIB_ARRAY_NORMALIZED, &vaa0Normalized);
+    gl->fGetVertexAttribiv(0, LOCAL_GL_VERTEX_ATTRIB_ARRAY_STRIDE, (GLint*)&vaa0Stride);
+    gl->fGetVertexAttribPointerv(0, LOCAL_GL_VERTEX_ATTRIB_ARRAY_POINTER, &vaa0Pointer);
+    // clang-format on
+
+    gl->fEnableVertexAttribArray(0);
+    const ScopedBindArrayBuffer bindVBO(gl, mParent.mQuadVBO);
+    gl->fVertexAttribPointer(0, 2, LOCAL_GL_FLOAT, false, 0, 0);
+  }
+
+  gl->fDrawArrays(LOCAL_GL_TRIANGLE_STRIP, 0, 4);
+
+  if (mParent.mQuadVAO) {
+    gl->fBindVertexArray(oldVAO);
+  } else {
+    if (vaa0Enabled) {
+      gl->fEnableVertexAttribArray(0);
+    } else {
+      gl->fDisableVertexAttribArray(0);
+    }
+    // The current VERTEX_ARRAY_BINDING is not necessarily the same as the
+    // buffer set for vaa0Buffer.
+    const ScopedBindArrayBuffer bindVBO(gl, vaa0Buffer);
+    gl->fVertexAttribPointer(0, vaa0Size, vaa0Type, bool(vaa0Normalized),
+                             vaa0Stride, vaa0Pointer);
+  }
+}
+
+// --
+
+GLBlitHelper::GLBlitHelper(GLContext* const gl)
+    : mGL(gl),
+      mDrawBlitProg_VertShader(mGL->fCreateShader(LOCAL_GL_VERTEX_SHADER))
+//, mYuvUploads_YSize(0, 0)
+//, mYuvUploads_UVSize(0, 0)
+{
+  mGL->fGenBuffers(1, &mQuadVBO);
+  {
+    const ScopedBindArrayBuffer bindVBO(mGL, mQuadVBO);
+
+    const float quadData[] = {0, 0, 1, 0, 0, 1, 1, 1};
+    const HeapCopyOfStackArray<float> heapQuadData(quadData);
+    mGL->fBufferData(LOCAL_GL_ARRAY_BUFFER, heapQuadData.ByteLength(),
+                     heapQuadData.Data(), LOCAL_GL_STATIC_DRAW);
+
+    if (mGL->IsSupported(GLFeature::vertex_array_object)) {
+      const auto prev = mGL->GetIntAs<GLuint>(LOCAL_GL_VERTEX_ARRAY_BINDING);
+
+      mGL->fGenVertexArrays(1, &mQuadVAO);
+      mGL->fBindVertexArray(mQuadVAO);
+      mGL->fEnableVertexAttribArray(0);
+      mGL->fVertexAttribPointer(0, 2, LOCAL_GL_FLOAT, false, 0, 0);
+
+      mGL->fBindVertexArray(prev);
+    }
+  }
+
+  // --
+
+  const auto glslVersion = mGL->ShadingLanguageVersion();
+
+  if (mGL->IsGLES()) {
+    // If you run into problems on old android devices, it might be because some
+    // devices have OES_EGL_image_external but not OES_EGL_image_external_essl3.
+    // We could just use 100 in that particular case, but then we lose out on
+    // e.g. sampler3D. Let's just try 300 for now, and if we get regressions
+    // we'll add an essl100 fallback.
+    if (glslVersion >= 300) {
+      mDrawBlitProg_VersionLine = nsCString("#version 300 es\n");
+    } else {
+      mDrawBlitProg_VersionLine = nsCString("#version 100\n");
+    }
+  } else if (glslVersion >= 130) {
+    mDrawBlitProg_VersionLine = nsPrintfCString("#version %u\n", glslVersion);
+  }
+
+  const char kVertSource[] =
+      "\
+        #if __VERSION__ >= 130                                               \n\
+            #define ATTRIBUTE in                                             \n\
+            #define VARYING out                                              \n\
+        #else                                                                \n\
+            #define ATTRIBUTE attribute                                      \n\
+            #define VARYING varying                                          \n\
+        #endif                                                               \n\
+                                                                             \n\
+        ATTRIBUTE vec2 aVert; // [0.0-1.0]                                   \n\
+                                                                             \n\
+        uniform mat3 uDestMatrix;                                            \n\
+        uniform mat3 uTexMatrix0;                                            \n\
+        uniform mat3 uTexMatrix1;                                            \n\
+                                                                             \n\
+        VARYING vec2 vTexCoord0;                                             \n\
+        VARYING vec2 vTexCoord1;                                             \n\
+                                                                             \n\
+        void main(void)                                                      \n\
+        {                                                                    \n\
+            vec2 destPos = (uDestMatrix * vec3(aVert, 1.0)).xy;              \n\
+            gl_Position = vec4(destPos * 2.0 - 1.0, 0.0, 1.0);               \n\
+                                                                             \n\
+            vTexCoord0 = (uTexMatrix0 * vec3(aVert, 1.0)).xy;                \n\
+            vTexCoord1 = (uTexMatrix1 * vec3(aVert, 1.0)).xy;                \n\
+        }                                                                    \n\
+    ";
+  const char* const parts[] = {mDrawBlitProg_VersionLine.get(), kVertSource};
+  mGL->fShaderSource(mDrawBlitProg_VertShader, ArrayLength(parts), parts,
+                     nullptr);
+  mGL->fCompileShader(mDrawBlitProg_VertShader);
+}
+
+GLBlitHelper::~GLBlitHelper() {
+  for (const auto& pair : mDrawBlitProgs) {
+    const auto& ptr = pair.second;
+    delete ptr;
+  }
+  mDrawBlitProgs.clear();
+
+  if (!mGL->MakeCurrent()) return;
+
+  mGL->fDeleteShader(mDrawBlitProg_VertShader);
+  mGL->fDeleteBuffers(1, &mQuadVBO);
+
+  if (mQuadVAO) {
+    mGL->fDeleteVertexArrays(1, &mQuadVAO);
+  }
+}
+
+// --
+
+const DrawBlitProg* GLBlitHelper::GetDrawBlitProg(
+    const DrawBlitProg::Key& key) const {
+  const auto& res = mDrawBlitProgs.insert({key, nullptr});
+  auto& pair = *(res.first);
+  const auto& didInsert = res.second;
+  if (didInsert) {
+    pair.second = CreateDrawBlitProg(pair.first);
+  }
+  return pair.second;
+}
+
+const DrawBlitProg* GLBlitHelper::CreateDrawBlitProg(
+    const DrawBlitProg::Key& key) const {
+  const auto precisionPref = StaticPrefs::gfx_blithelper_precision();
+  const char* precision;
+  switch (precisionPref) {
+    case 0:
+      precision = "lowp";
+      break;
+    case 1:
+      precision = "mediump";
+      break;
+    default:
+      if (precisionPref != 2) {
+        NS_WARNING("gfx.blithelper.precision clamped to 2.");
+      }
+      precision = "MAXP";
+      break;
+  }
+
+  nsPrintfCString precisionLine("\n#define PRECISION %s\n", precision);
+
+  // -
+
+  const ScopedShader fs(mGL, LOCAL_GL_FRAGMENT_SHADER);
+
+  std::vector<const char*> parts;
+  {
+    parts.push_back(mDrawBlitProg_VersionLine.get());
+    parts.push_back(kFragPreprocHeader);
+    if (key.fragHeader) {
+      parts.push_back(key.fragHeader);
+    }
+    parts.push_back(precisionLine.BeginReading());
+    parts.push_back(kFragDeclHeader);
+    for (const auto& part : key.fragParts) {
+      if (part) {
+        parts.push_back(part);
+      }
+    }
+    parts.push_back(kFragBody);
+  }
+
+  const auto PrintFragSource = [&]() {
+    printf_stderr("Frag source:\n");
+    int i = 0;
+    for (const auto& part : parts) {
+      printf_stderr("// parts[%i]:\n%s\n", i, part);
+      i += 1;
+    }
+  };
+  if (gfxEnv::MOZ_DUMP_GLBLITHELPER()) {
+    PrintFragSource();
+  }
+
+  mGL->fShaderSource(fs, AssertedCast<GLint>(parts.size()), parts.data(),
+                     nullptr);
+  mGL->fCompileShader(fs);
+
+  const auto prog = mGL->fCreateProgram();
+  mGL->fAttachShader(prog, mDrawBlitProg_VertShader);
+  mGL->fAttachShader(prog, fs);
+
+  mGL->fBindAttribLocation(prog, 0, "aVert");
+  mGL->fLinkProgram(prog);
+
+  GLenum status = 0;
+  mGL->fGetProgramiv(prog, LOCAL_GL_LINK_STATUS, (GLint*)&status);
+  if (status == LOCAL_GL_TRUE || mGL->CheckContextLost()) {
+    const SaveRestoreCurrentProgram oldProg(mGL);
+    mGL->fUseProgram(prog);
+    const char* samplerNames[] = {"uTex0", "uTex1", "uTex2"};
+    for (int i = 0; i < 3; i++) {
+      const auto loc = mGL->fGetUniformLocation(prog, samplerNames[i]);
+      if (loc == -1) continue;
+      mGL->fUniform1i(loc, i);
+    }
+
+    return new DrawBlitProg(this, prog);
+  }
+
+  GLuint progLogLen = 0;
+  mGL->fGetProgramiv(prog, LOCAL_GL_INFO_LOG_LENGTH, (GLint*)&progLogLen);
+  const UniquePtr<char[]> progLog(new char[progLogLen + 1]);
+  mGL->fGetProgramInfoLog(prog, progLogLen, nullptr, progLog.get());
+  progLog[progLogLen] = 0;
+
+  const auto& vs = mDrawBlitProg_VertShader;
+  GLuint vsLogLen = 0;
+  mGL->fGetShaderiv(vs, LOCAL_GL_INFO_LOG_LENGTH, (GLint*)&vsLogLen);
+  const UniquePtr<char[]> vsLog(new char[vsLogLen + 1]);
+  mGL->fGetShaderInfoLog(vs, vsLogLen, nullptr, vsLog.get());
+  vsLog[vsLogLen] = 0;
+
+  GLuint fsLogLen = 0;
+  mGL->fGetShaderiv(fs, LOCAL_GL_INFO_LOG_LENGTH, (GLint*)&fsLogLen);
+  const UniquePtr<char[]> fsLog(new char[fsLogLen + 1]);
+  mGL->fGetShaderInfoLog(fs, fsLogLen, nullptr, fsLog.get());
+  fsLog[fsLogLen] = 0;
+
+  const auto logs =
+      std::string("DrawBlitProg link failed:\n") + "progLog: " + progLog.get() +
+      "\n" + "vsLog: " + vsLog.get() + "\n" + "fsLog: " + fsLog.get() + "\n";
+  gfxCriticalError() << logs;
+
+  PrintFragSource();
+
+  MOZ_CRASH("DrawBlitProg link failed");
+}
+
+// -----------------------------------------------------------------------------
+
+#ifdef XP_MACOSX
+static RefPtr<MacIOSurface> LookupSurface(
+    const layers::SurfaceDescriptorMacIOSurface& sd) {
+  return MacIOSurface::LookupSurface(sd.surfaceId(), !sd.isOpaque(),
+                                     sd.yUVColorSpace());
+}
+#endif
+
+bool GLBlitHelper::BlitSdToFramebuffer(const layers::SurfaceDescriptor& asd,
+                                       const gfx::IntSize& destSize,
+                                       const OriginPos destOrigin) {
+  const auto sdType = asd.type();
+  switch (sdType) {
+    case layers::SurfaceDescriptor::TSurfaceDescriptorBuffer: {
+      const auto& sd = asd.get_SurfaceDescriptorBuffer();
+      const auto yuvData = PlanarYCbCrData::From(sd);
+      if (!yuvData) {
+        gfxCriticalNote << "[GLBlitHelper::BlitSdToFramebuffer] "
+                           "PlanarYCbCrData::From failed";
+        return false;
+      }
+      return BlitPlanarYCbCr(*yuvData, destSize, destOrigin);
+    }
+#ifdef XP_WIN
+    case layers::SurfaceDescriptor::TSurfaceDescriptorD3D10: {
+      const auto& sd = asd.get_SurfaceDescriptorD3D10();
+      return BlitDescriptor(sd, destSize, destOrigin);
+    }
+    case layers::SurfaceDescriptor::TSurfaceDescriptorDXGIYCbCr: {
+      const auto& sd = asd.get_SurfaceDescriptorDXGIYCbCr();
+      return BlitDescriptor(sd, destSize, destOrigin);
+    }
+#endif
+#ifdef XP_MACOSX
+    case layers::SurfaceDescriptor::TSurfaceDescriptorMacIOSurface: {
+      const auto& sd = asd.get_SurfaceDescriptorMacIOSurface();
+      const auto surf = LookupSurface(sd);
+      if (!surf) {
+        NS_WARNING("LookupSurface(MacIOSurface) failed");
+        // Sometimes that frame for our handle gone already. That's life, for
+        // now.
+        return false;
+      }
+      return BlitImage(surf, destSize, destOrigin);
+    }
+#endif
+#ifdef MOZ_WIDGET_ANDROID
+    case layers::SurfaceDescriptor::TSurfaceTextureDescriptor: {
+      const auto& sd = asd.get_SurfaceTextureDescriptor();
+      auto surfaceTexture = java::GeckoSurfaceTexture::Lookup(sd.handle());
+      return Blit(surfaceTexture, destSize, destOrigin);
+    }
+#endif
+#ifdef MOZ_WAYLAND
+    case layers::SurfaceDescriptor::TSurfaceDescriptorDMABuf: {
+      const auto& sd = asd.get_SurfaceDescriptorDMABuf();
+      RefPtr<DMABufSurface> surface = DMABufSurface::CreateDMABufSurface(sd);
+      return Blit(surface, destSize, destOrigin);
+    }
+#endif
+    default:
+      return false;
+  }
+}
+
+bool GLBlitHelper::BlitImageToFramebuffer(layers::Image* const srcImage,
+                                          const gfx::IntSize& destSize,
+                                          const OriginPos destOrigin) {
+  switch (srcImage->GetFormat()) {
+    case ImageFormat::PLANAR_YCBCR: {
+      const auto srcImage2 = static_cast<PlanarYCbCrImage*>(srcImage);
+      const auto data = srcImage2->GetData();
+      return BlitPlanarYCbCr(*data, destSize, destOrigin);
+    }
+
+    case ImageFormat::SURFACE_TEXTURE: {
+#ifdef MOZ_WIDGET_ANDROID
+      auto* image = srcImage->AsSurfaceTextureImage();
+      MOZ_ASSERT(image);
+      auto surfaceTexture =
+          java::GeckoSurfaceTexture::Lookup(image->GetHandle());
+      return Blit(surfaceTexture, destSize, destOrigin);
+#else
+      MOZ_ASSERT(false);
+      return false;
+#endif
+    }
+    case ImageFormat::MAC_IOSURFACE:
+#ifdef XP_MACOSX
+      return BlitImage(srcImage->AsMacIOSurfaceImage(), destSize, destOrigin);
+#else
+      MOZ_ASSERT(false);
+      return false;
+#endif
+
+    case ImageFormat::GPU_VIDEO:
+      return BlitImage(static_cast<layers::GPUVideoImage*>(srcImage), destSize,
+                       destOrigin);
+#ifdef XP_WIN
+    case ImageFormat::D3D11_SHARE_HANDLE_TEXTURE:
+      return BlitImage(static_cast<layers::D3D11ShareHandleImage*>(srcImage),
+                       destSize, destOrigin);
+    case ImageFormat::D3D11_TEXTURE_IMF_SAMPLE:
+      return BlitImage(
+          static_cast<layers::D3D11TextureIMFSampleImage*>(srcImage), destSize,
+          destOrigin);
+    case ImageFormat::D3D11_YCBCR_IMAGE:
+      return BlitImage(static_cast<layers::D3D11YCbCrImage*>(srcImage),
+                       destSize, destOrigin);
+    case ImageFormat::D3D9_RGB32_TEXTURE:
+      return false;  // todo
+    case ImageFormat::DCOMP_SURFACE:
+      return false;
+#else
+    case ImageFormat::D3D11_SHARE_HANDLE_TEXTURE:
+    case ImageFormat::D3D11_TEXTURE_IMF_SAMPLE:
+    case ImageFormat::D3D11_YCBCR_IMAGE:
+    case ImageFormat::D3D9_RGB32_TEXTURE:
+    case ImageFormat::DCOMP_SURFACE:
+      MOZ_ASSERT(false);
+      return false;
+#endif
+    case ImageFormat::DMABUF:
+#ifdef MOZ_WAYLAND
+      return BlitImage(static_cast<layers::DMABUFSurfaceImage*>(srcImage),
+                       destSize, destOrigin);
+#else
+      return false;
+#endif
+    case ImageFormat::MOZ2D_SURFACE:
+    case ImageFormat::NV_IMAGE:
+    case ImageFormat::OVERLAY_IMAGE:
+    case ImageFormat::SHARED_RGB:
+    case ImageFormat::TEXTURE_WRAPPER:
+      return false;  // todo
+  }
+  return false;
+}
+
+// -------------------------------------
+
+#ifdef MOZ_WIDGET_ANDROID
+bool GLBlitHelper::Blit(const java::GeckoSurfaceTexture::Ref& surfaceTexture,
+                        const gfx::IntSize& destSize,
+                        const OriginPos destOrigin) const {
+  if (!surfaceTexture) {
+    return false;
+  }
+
+  const ScopedBindTextureUnit boundTU(mGL, LOCAL_GL_TEXTURE0);
+
+  if (!surfaceTexture->IsAttachedToGLContext((int64_t)mGL)) {
+    GLuint tex;
+    mGL->MakeCurrent();
+    mGL->fGenTextures(1, &tex);
+
+    if (NS_FAILED(surfaceTexture->AttachToGLContext((int64_t)mGL, tex))) {
+      mGL->fDeleteTextures(1, &tex);
+      return false;
+    }
+  }
+
+  const ScopedBindTexture savedTex(mGL, surfaceTexture->GetTexName(),
+                                   LOCAL_GL_TEXTURE_EXTERNAL);
+  surfaceTexture->UpdateTexImage();
+  const auto transform3 = Mat3::I();
+  // const auto srcOrigin = OriginPos::TopLeft;
+  const auto srcOrigin = OriginPos::BottomLeft;
+  const bool yFlip = (srcOrigin != destOrigin);
+  const auto& prog = GetDrawBlitProg(
+      {kFragHeader_TexExt, {kFragSample_OnePlane, kFragConvert_None}});
+  const DrawBlitProg::BaseArgs baseArgs = {transform3, yFlip, destSize,
+                                           Nothing()};
+  prog->Draw(baseArgs, nullptr);
+
+  if (surfaceTexture->IsSingleBuffer()) {
+    surfaceTexture->ReleaseTexImage();
+  }
+
+  return true;
+}
+#endif
+
+// -------------------------------------
+
+bool GuessDivisors(const gfx::IntSize& ySize, const gfx::IntSize& uvSize,
+                   gfx::IntSize* const out_divisors) {
+  const gfx::IntSize divisors((ySize.width == uvSize.width) ? 1 : 2,
+                              (ySize.height == uvSize.height) ? 1 : 2);
+  if (uvSize.width * divisors.width != ySize.width ||
+      uvSize.height * divisors.height != ySize.height) {
+    return false;
+  }
+  *out_divisors = divisors;
+  return true;
+}
+
+bool GLBlitHelper::BlitPlanarYCbCr(const PlanarYCbCrData& yuvData,
+                                   const gfx::IntSize& destSize,
+                                   const OriginPos destOrigin) {
+  const auto& prog = GetDrawBlitProg(
+      {kFragHeader_Tex2D, {kFragSample_ThreePlane, kFragConvert_ColorMatrix}});
+
+  if (!mYuvUploads[0]) {
+    mGL->fGenTextures(3, mYuvUploads);
+    const ScopedBindTexture bindTex(mGL, mYuvUploads[0]);
+    mGL->TexParams_SetClampNoMips();
+    mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mYuvUploads[1]);
+    mGL->TexParams_SetClampNoMips();
+    mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mYuvUploads[2]);
+    mGL->TexParams_SetClampNoMips();
+  }
+
+  // --
+
+  auto ySize = yuvData.YDataSize();
+  auto cbcrSize = yuvData.CbCrDataSize();
+  if (yuvData.mYSkip || yuvData.mCbSkip || yuvData.mCrSkip || ySize.width < 0 ||
+      ySize.height < 0 || cbcrSize.width < 0 || cbcrSize.height < 0 ||
+      yuvData.mYStride < 0 || yuvData.mCbCrStride < 0) {
+    gfxCriticalError() << "Unusual PlanarYCbCrData: " << yuvData.mYSkip << ","
+                       << yuvData.mCbSkip << "," << yuvData.mCrSkip << ", "
+                       << ySize.width << "," << ySize.height << ", "
+                       << cbcrSize.width << "," << cbcrSize.height << ", "
+                       << yuvData.mYStride << "," << yuvData.mCbCrStride;
+    return false;
+  }
+
+  gfx::IntSize divisors;
+  switch (yuvData.mChromaSubsampling) {
+    case gfx::ChromaSubsampling::FULL:
+      divisors = gfx::IntSize(1, 1);
+      break;
+    case gfx::ChromaSubsampling::HALF_WIDTH:
+      divisors = gfx::IntSize(2, 1);
+      break;
+    case gfx::ChromaSubsampling::HALF_WIDTH_AND_HEIGHT:
+      divisors = gfx::IntSize(2, 2);
+      break;
+    default:
+      gfxCriticalError() << "Unknown chroma subsampling:"
+                         << int(yuvData.mChromaSubsampling);
+      return false;
+  }
+
+  // --
+
+  // RED textures aren't valid in GLES2, and ALPHA textures are not valid in
+  // desktop GL Core Profiles. So use R8 textures on GL3.0+ and GLES3.0+, but
+  // LUMINANCE/LUMINANCE/UNSIGNED_BYTE otherwise.
+  GLenum internalFormat;
+  GLenum unpackFormat;
+  if (mGL->IsAtLeast(gl::ContextProfile::OpenGLCore, 300) ||
+      mGL->IsAtLeast(gl::ContextProfile::OpenGLES, 300)) {
+    internalFormat = LOCAL_GL_R8;
+    unpackFormat = LOCAL_GL_RED;
+  } else {
+    internalFormat = LOCAL_GL_LUMINANCE;
+    unpackFormat = LOCAL_GL_LUMINANCE;
+  }
+
+  // --
+
+  const ScopedSaveMultiTex saveTex(mGL, {0, 1, 2}, LOCAL_GL_TEXTURE_2D);
+  const ResetUnpackState reset(mGL);
+  const gfx::IntSize yTexSize(yuvData.mYStride, yuvData.YDataSize().height);
+  const gfx::IntSize uvTexSize(yuvData.mCbCrStride,
+                               yuvData.CbCrDataSize().height);
+
+  if (yTexSize != mYuvUploads_YSize || uvTexSize != mYuvUploads_UVSize) {
+    mYuvUploads_YSize = yTexSize;
+    mYuvUploads_UVSize = uvTexSize;
+
+    mGL->fActiveTexture(LOCAL_GL_TEXTURE0);
+    mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mYuvUploads[0]);
+    mGL->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, internalFormat, yTexSize.width,
+                     yTexSize.height, 0, unpackFormat, LOCAL_GL_UNSIGNED_BYTE,
+                     nullptr);
+    for (int i = 1; i < 3; i++) {
+      mGL->fActiveTexture(LOCAL_GL_TEXTURE0 + i);
+      mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mYuvUploads[i]);
+      mGL->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, internalFormat, uvTexSize.width,
+                       uvTexSize.height, 0, unpackFormat,
+                       LOCAL_GL_UNSIGNED_BYTE, nullptr);
+    }
+  }
+
+  // --
+
+  mGL->fActiveTexture(LOCAL_GL_TEXTURE0);
+  mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mYuvUploads[0]);
+  mGL->fTexSubImage2D(LOCAL_GL_TEXTURE_2D, 0, 0, 0, yTexSize.width,
+                      yTexSize.height, unpackFormat, LOCAL_GL_UNSIGNED_BYTE,
+                      yuvData.mYChannel);
+  mGL->fActiveTexture(LOCAL_GL_TEXTURE1);
+  mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mYuvUploads[1]);
+  mGL->fTexSubImage2D(LOCAL_GL_TEXTURE_2D, 0, 0, 0, uvTexSize.width,
+                      uvTexSize.height, unpackFormat, LOCAL_GL_UNSIGNED_BYTE,
+                      yuvData.mCbChannel);
+  mGL->fActiveTexture(LOCAL_GL_TEXTURE2);
+  mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mYuvUploads[2]);
+  mGL->fTexSubImage2D(LOCAL_GL_TEXTURE_2D, 0, 0, 0, uvTexSize.width,
+                      uvTexSize.height, unpackFormat, LOCAL_GL_UNSIGNED_BYTE,
+                      yuvData.mCrChannel);
+
+  // --
+
+  const auto& clipRect = yuvData.mPictureRect;
+  const auto srcOrigin = OriginPos::BottomLeft;
+  const bool yFlip = (destOrigin != srcOrigin);
+
+  const DrawBlitProg::BaseArgs baseArgs = {SubRectMat3(clipRect, yTexSize),
+                                           yFlip, destSize, Nothing()};
+  const DrawBlitProg::YUVArgs yuvArgs = {
+      SubRectMat3(clipRect, uvTexSize, divisors), Some(yuvData.mYUVColorSpace)};
+  prog->Draw(baseArgs, &yuvArgs);
+  return true;
+}
+
+// -------------------------------------
+
+#ifdef XP_MACOSX
+bool GLBlitHelper::BlitImage(layers::MacIOSurfaceImage* const srcImage,
+                             const gfx::IntSize& destSize,
+                             const OriginPos destOrigin) const {
+  return BlitImage(srcImage->GetSurface(), destSize, destOrigin);
+}
+
+static std::string IntAsAscii(const int x) {
+  std::string str;
+  str.reserve(6);
+  auto u = static_cast<unsigned int>(x);
+  while (u) {
+    str.insert(str.begin(), u & 0xff);
+    u >>= 8;
+  }
+  str.insert(str.begin(), '\'');
+  str.push_back('\'');
+  return str;
+}
+
+bool GLBlitHelper::BlitImage(MacIOSurface* const iosurf,
+                             const gfx::IntSize& destSize,
+                             const OriginPos destOrigin) const {
+  if (!iosurf) {
+    gfxCriticalError() << "Null MacIOSurface for GLBlitHelper::BlitImage";
+    return false;
+  }
+  if (mGL->GetContextType() != GLContextType::CGL) {
+    MOZ_ASSERT(false);
+    return false;
+  }
+  const auto glCGL = static_cast<GLContextCGL*>(mGL);
+  const auto cglContext = glCGL->GetCGLContext();
+
+  const auto& srcOrigin = OriginPos::BottomLeft;
+
+  DrawBlitProg::BaseArgs baseArgs;
+  baseArgs.yFlip = (destOrigin != srcOrigin);
+  baseArgs.destSize = destSize;
+
+  // TODO: The colorspace is known by the IOSurface, why override it?
+  // See GetYUVColorSpace/GetFullRange()
+  DrawBlitProg::YUVArgs yuvArgs;
+  yuvArgs.colorSpaceForMatrix = Some(iosurf->GetYUVColorSpace());
+
+  const DrawBlitProg::YUVArgs* pYuvArgs = nullptr;
+
+  auto planes = iosurf->GetPlaneCount();
+  if (!planes) {
+    planes = 1;  // Bad API. No cookie.
+  }
+
+  const GLenum texTarget = LOCAL_GL_TEXTURE_RECTANGLE;
+
+  std::vector<uint8_t> texUnits;
+  for (uint8_t i = 0; i < planes; i++) {
+    texUnits.push_back(i);
+  }
+  const ScopedSaveMultiTex saveTex(mGL, texUnits, texTarget);
+  const ScopedTexture tex0(mGL);
+  const ScopedTexture tex1(mGL);
+  const ScopedTexture tex2(mGL);
+  const GLuint texs[3] = {tex0, tex1, tex2};
+
+  const auto pixelFormat = iosurf->GetPixelFormat();
+  if (mGL->ShouldSpew()) {
+    const auto formatStr = IntAsAscii(pixelFormat);
+    printf_stderr("iosurf format: %s (0x%08x)\n", formatStr.c_str(),
+                  pixelFormat);
+  }
+
+  const char* fragSample;
+  switch (planes) {
+    case 1:
+      switch (pixelFormat) {
+        case kCVPixelFormatType_24RGB:
+        case kCVPixelFormatType_24BGR:
+        case kCVPixelFormatType_32ARGB:
+        case kCVPixelFormatType_32BGRA:
+        case kCVPixelFormatType_32ABGR:
+        case kCVPixelFormatType_32RGBA:
+        case kCVPixelFormatType_64ARGB:
+        case kCVPixelFormatType_48RGB:
+          fragSample = kFragSample_OnePlane;
+          break;
+        case kCVPixelFormatType_422YpCbCr8:
+        case kCVPixelFormatType_422YpCbCr8_yuvs:
+          fragSample = kFragSample_OnePlane_YUV_via_GBR;
+          pYuvArgs = &yuvArgs;
+          break;
+        default: {
+          std::string str;
+          if (pixelFormat <= 0xff) {
+            str = std::to_string(pixelFormat);
+          } else {
+            str = IntAsAscii(pixelFormat);
+          }
+          gfxCriticalError() << "Unhandled kCVPixelFormatType_*: " << str;
+          // Probably YUV though
+          fragSample = kFragSample_OnePlane_YUV_via_GBR;
+          pYuvArgs = &yuvArgs;
+          break;
+        }
+      }
+      break;
+    case 2:
+      fragSample = kFragSample_TwoPlane;
+      pYuvArgs = &yuvArgs;
+      break;
+    case 3:
+      fragSample = kFragSample_ThreePlane;
+      pYuvArgs = &yuvArgs;
+      break;
+    default:
+      gfxCriticalError() << "Unexpected plane count: " << planes;
+      return false;
+  }
+
+  for (uint32_t p = 0; p < planes; p++) {
+    mGL->fActiveTexture(LOCAL_GL_TEXTURE0 + p);
+    mGL->fBindTexture(texTarget, texs[p]);
+    mGL->TexParams_SetClampNoMips(texTarget);
+
+    auto err = iosurf->CGLTexImageIOSurface2D(mGL, cglContext, p);
+    if (err) {
+      return false;
+    }
+
+    if (p == 0) {
+      const auto width = iosurf->GetDevicePixelWidth(p);
+      const auto height = iosurf->GetDevicePixelHeight(p);
+      baseArgs.texMatrix0 = SubRectMat3(0, 0, width, height);
+      yuvArgs.texMatrix1 = SubRectMat3(0, 0, width / 2.0, height / 2.0);
+    }
+  }
+
+  const auto& prog = GetDrawBlitProg({
+      kFragHeader_Tex2DRect,
+      {fragSample, kFragConvert_ColorMatrix},
+  });
+  prog->Draw(baseArgs, pYuvArgs);
+  return true;
+}
+#endif
+
+// -----------------------------------------------------------------------------
+
+void GLBlitHelper::DrawBlitTextureToFramebuffer(const GLuint srcTex,
+                                                const gfx::IntSize& srcSize,
+                                                const gfx::IntSize& destSize,
+                                                const GLenum srcTarget,
+                                                const bool srcIsBGRA) const {
+  const char* fragHeader = nullptr;
+  Mat3 texMatrix0;
+  switch (srcTarget) {
+    case LOCAL_GL_TEXTURE_2D:
+      fragHeader = kFragHeader_Tex2D;
+      texMatrix0 = Mat3::I();
+      break;
+    case LOCAL_GL_TEXTURE_RECTANGLE_ARB:
+      fragHeader = kFragHeader_Tex2DRect;
+      texMatrix0 = SubRectMat3(0, 0, srcSize.width, srcSize.height);
+      break;
+    default:
+      gfxCriticalError() << "Unexpected srcTarget: " << srcTarget;
+      return;
+  }
+  const auto fragConvert = srcIsBGRA ? kFragConvert_BGR : kFragConvert_None;
+  const auto& prog = GetDrawBlitProg({
+      fragHeader,
+      {kFragSample_OnePlane, fragConvert},
+  });
+
+  const ScopedSaveMultiTex saveTex(mGL, {0}, srcTarget);
+  mGL->fActiveTexture(LOCAL_GL_TEXTURE0);
+  mGL->fBindTexture(srcTarget, srcTex);
+
+  const bool yFlip = false;
+  const DrawBlitProg::BaseArgs baseArgs = {texMatrix0, yFlip, destSize,
+                                           Nothing()};
+  prog->Draw(baseArgs);
+}
+
+// -----------------------------------------------------------------------------
+
+void GLBlitHelper::BlitFramebuffer(const gfx::IntRect& srcRect,
+                                   const gfx::IntRect& destRect,
+                                   GLuint filter) const {
+  MOZ_ASSERT(mGL->IsSupported(GLFeature::framebuffer_blit));
+
+  const ScopedGLState scissor(mGL, LOCAL_GL_SCISSOR_TEST, false);
+  mGL->fBlitFramebuffer(srcRect.x, srcRect.y, srcRect.XMost(), srcRect.YMost(),
+                        destRect.x, destRect.y, destRect.XMost(),
+                        destRect.YMost(), LOCAL_GL_COLOR_BUFFER_BIT, filter);
+}
+
+// --
+
+void GLBlitHelper::BlitFramebufferToFramebuffer(const GLuint srcFB,
+                                                const GLuint destFB,
+                                                const gfx::IntRect& srcRect,
+                                                const gfx::IntRect& destRect,
+                                                GLuint filter) const {
+  MOZ_ASSERT(mGL->IsSupported(GLFeature::framebuffer_blit));
+  MOZ_GL_ASSERT(mGL, !srcFB || mGL->fIsFramebuffer(srcFB));
+  MOZ_GL_ASSERT(mGL, !destFB || mGL->fIsFramebuffer(destFB));
+
+  const ScopedBindFramebuffer boundFB(mGL);
+  mGL->fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER, srcFB);
+  mGL->fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER, destFB);
+
+  BlitFramebuffer(srcRect, destRect, filter);
+}
+
+void GLBlitHelper::BlitTextureToFramebuffer(GLuint srcTex,
+                                            const gfx::IntSize& srcSize,
+                                            const gfx::IntSize& destSize,
+                                            GLenum srcTarget) const {
+  MOZ_GL_ASSERT(mGL, mGL->fIsTexture(srcTex));
+
+  if (mGL->IsSupported(GLFeature::framebuffer_blit)) {
+    const ScopedFramebufferForTexture srcWrapper(mGL, srcTex, srcTarget);
+    const ScopedBindFramebuffer bindFB(mGL);
+    mGL->fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER, srcWrapper.FB());
+    BlitFramebuffer(gfx::IntRect({}, srcSize), gfx::IntRect({}, destSize));
+    return;
+  }
+
+  DrawBlitTextureToFramebuffer(srcTex, srcSize, destSize, srcTarget);
+}
+
+void GLBlitHelper::BlitFramebufferToTexture(GLuint destTex,
+                                            const gfx::IntSize& srcSize,
+                                            const gfx::IntSize& destSize,
+                                            GLenum destTarget) const {
+  MOZ_GL_ASSERT(mGL, mGL->fIsTexture(destTex));
+
+  if (mGL->IsSupported(GLFeature::framebuffer_blit)) {
+    const ScopedFramebufferForTexture destWrapper(mGL, destTex, destTarget);
+    const ScopedBindFramebuffer bindFB(mGL);
+    mGL->fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER, destWrapper.FB());
+    BlitFramebuffer(gfx::IntRect({}, srcSize), gfx::IntRect({}, destSize));
+    return;
+  }
+
+  ScopedBindTexture autoTex(mGL, destTex, destTarget);
+  ScopedGLState scissor(mGL, LOCAL_GL_SCISSOR_TEST, false);
+  mGL->fCopyTexSubImage2D(destTarget, 0, 0, 0, 0, 0, srcSize.width,
+                          srcSize.height);
+}
+
+void GLBlitHelper::BlitTextureToTexture(GLuint srcTex, GLuint destTex,
+                                        const gfx::IntSize& srcSize,
+                                        const gfx::IntSize& destSize,
+                                        GLenum srcTarget,
+                                        GLenum destTarget) const {
+  MOZ_GL_ASSERT(mGL, mGL->fIsTexture(srcTex));
+  MOZ_GL_ASSERT(mGL, mGL->fIsTexture(destTex));
+
+  // Start down the CopyTexSubImage path, not the DrawBlit path.
+  const ScopedFramebufferForTexture srcWrapper(mGL, srcTex, srcTarget);
+  const ScopedBindFramebuffer bindFB(mGL, srcWrapper.FB());
+  BlitFramebufferToTexture(destTex, srcSize, destSize, destTarget);
+}
+
+// -------------------------------------
+
+bool GLBlitHelper::BlitImage(layers::GPUVideoImage* const srcImage,
+                             const gfx::IntSize& destSize,
+                             const OriginPos destOrigin) const {
+  const auto& data = srcImage->GetData();
+  if (!data) return false;
+
+  const auto& desc = data->SD();
+
+  MOZ_ASSERT(
+      desc.type() ==
+      layers::SurfaceDescriptorGPUVideo::TSurfaceDescriptorRemoteDecoder);
+  const auto& subdescUnion =
+      desc.get_SurfaceDescriptorRemoteDecoder().subdesc();
+  switch (subdescUnion.type()) {
+#ifdef MOZ_WAYLAND
+    case layers::RemoteDecoderVideoSubDescriptor::TSurfaceDescriptorDMABuf: {
+      const auto& subdesc = subdescUnion.get_SurfaceDescriptorDMABuf();
+      RefPtr<DMABufSurface> surface =
+          DMABufSurface::CreateDMABufSurface(subdesc);
+      return Blit(surface, destSize, destOrigin);
+    }
+#endif
+#ifdef XP_WIN
+    case layers::RemoteDecoderVideoSubDescriptor::TSurfaceDescriptorD3D10: {
+      const auto& subdesc = subdescUnion.get_SurfaceDescriptorD3D10();
+      return BlitDescriptor(subdesc, destSize, destOrigin);
+    }
+    case layers::RemoteDecoderVideoSubDescriptor::TSurfaceDescriptorDXGIYCbCr: {
+      const auto& subdesc = subdescUnion.get_SurfaceDescriptorDXGIYCbCr();
+      return BlitDescriptor(subdesc, destSize, destOrigin);
+    }
+#endif
+#ifdef XP_MACOSX
+    case layers::RemoteDecoderVideoSubDescriptor::
+        TSurfaceDescriptorMacIOSurface: {
+      const auto& subdesc = subdescUnion.get_SurfaceDescriptorMacIOSurface();
+      RefPtr<MacIOSurface> surface = MacIOSurface::LookupSurface(
+          subdesc.surfaceId(), !subdesc.isOpaque(), subdesc.yUVColorSpace());
+      MOZ_ASSERT(surface);
+      if (!surface) {
+        return false;
+      }
+      return BlitImage(surface, destSize, destOrigin);
+    }
+#endif
+    case layers::RemoteDecoderVideoSubDescriptor::Tnull_t:
+      // This GPUVideoImage isn't directly readable outside the GPU process.
+      // Abort.
+      return false;
+    default:
+      gfxCriticalError() << "Unhandled subdesc type: "
+                         << uint32_t(subdescUnion.type());
+      return false;
+  }
+}
+
+// -------------------------------------
+#ifdef MOZ_WAYLAND
+bool GLBlitHelper::Blit(DMABufSurface* surface, const gfx::IntSize& destSize,
+                        OriginPos destOrigin) const {
+  const auto& srcOrigin = OriginPos::BottomLeft;
+
+  DrawBlitProg::BaseArgs baseArgs;
+  baseArgs.yFlip = (destOrigin != srcOrigin);
+  baseArgs.destSize = destSize;
+
+  // TODO: The colorspace is known by the DMABUFSurface, why override it?
+  // See GetYUVColorSpace/GetFullRange()
+  DrawBlitProg::YUVArgs yuvArgs;
+  yuvArgs.colorSpaceForMatrix = Some(surface->GetYUVColorSpace());
+
+  const DrawBlitProg::YUVArgs* pYuvArgs = nullptr;
+  const auto planes = surface->GetTextureCount();
+
+  // -
+  // Ensure textures for all planes have been created.
+
+  const bool createTextures = [&]() {
+    for (int i = 0; i < planes; i++) {
+      if (!surface->GetTexture(i)) {
+        return true;
+      }
+    }
+    return false;
+  }();
+
+  bool didCreateTexture = false;
+  auto releaseTextures = mozilla::MakeScopeExit([&] {
+    if (didCreateTexture) {
+      surface->ReleaseTextures();
+    }
+  });
+
+  if (createTextures) {
+    for (int i = 0; i < planes; i++) {
+      if (surface->GetTexture(i)) {
+        continue;
+      }
+      if (!surface->CreateTexture(mGL, i)) {
+        LOGDMABUF(("GLBlitHelper::Blit(): Failed to create DMABuf textures."));
+        return false;
+      }
+      didCreateTexture = true;
+    }
+  }
+
+  // -
+
+  const GLenum texTarget = LOCAL_GL_TEXTURE_2D;
+
+  std::vector<uint8_t> texUnits;
+  for (uint8_t i = 0; i < planes; i++) {
+    texUnits.push_back(i);
+  }
+  const ScopedSaveMultiTex saveTex(mGL, texUnits, texTarget);
+  const auto pixelFormat = surface->GetSurfaceType();
+
+  const char* fragSample;
+  auto fragConvert = kFragConvert_None;
+  switch (pixelFormat) {
+    case DMABufSurface::SURFACE_RGBA:
+      fragSample = kFragSample_OnePlane;
+      break;
+    case DMABufSurface::SURFACE_NV12:
+      fragSample = kFragSample_TwoPlane;
+      pYuvArgs = &yuvArgs;
+      fragConvert = kFragConvert_ColorMatrix;
+      break;
+    case DMABufSurface::SURFACE_YUV420:
+      fragSample = kFragSample_ThreePlane;
+      pYuvArgs = &yuvArgs;
+      fragConvert = kFragConvert_ColorMatrix;
+      break;
+    default:
+      gfxCriticalError() << "Unexpected pixel format: " << pixelFormat;
+      return false;
+  }
+
+  for (const auto p : IntegerRange(planes)) {
+    mGL->fActiveTexture(LOCAL_GL_TEXTURE0 + p);
+    mGL->fBindTexture(texTarget, surface->GetTexture(p));
+    mGL->TexParams_SetClampNoMips(texTarget);
+  }
+
+  // We support only NV12/YUV420 formats only with 1/2 texture scale.
+  // We don't set cliprect as DMABus textures are created without padding.
+  baseArgs.texMatrix0 = SubRectMat3(0, 0, 1, 1);
+  yuvArgs.texMatrix1 = SubRectMat3(0, 0, 1, 1);
+
+  const auto& prog =
+      GetDrawBlitProg({kFragHeader_Tex2D, {fragSample, fragConvert}});
+  prog->Draw(baseArgs, pYuvArgs);
+
+  return true;
+}
+
+bool GLBlitHelper::BlitImage(layers::DMABUFSurfaceImage* srcImage,
+                             const gfx::IntSize& destSize,
+                             OriginPos destOrigin) const {
+  DMABufSurface* surface = srcImage->GetSurface();
+  if (!surface) {
+    gfxCriticalError() << "Null DMABUFSurface for GLBlitHelper::BlitImage";
+    return false;
+  }
+  return Blit(surface, destSize, destOrigin);
+}
+#endif
+
+// -
+
+template <size_t N>
+static void PushUnorm(uint32_t* const out, const float inVal) {
+  const uint32_t mask = (1 << N) - 1;
+  auto fval = inVal;
+  fval = std::max(0.0f, std::min(fval, 1.0f));
+  fval *= mask;
+  fval = roundf(fval);
+  auto ival = static_cast<uint32_t>(fval);
+  ival &= mask;
+
+  *out <<= N;
+  *out |= ival;
+}
+
+static uint32_t toRgb10A2(const color::vec4& val) {
+  // R in LSB
+  uint32_t ret = 0;
+  PushUnorm<2>(&ret, val.w());
+  PushUnorm<10>(&ret, val.z());
+  PushUnorm<10>(&ret, val.y());
+  PushUnorm<10>(&ret, val.x());
+  return ret;
+}
+
+std::shared_ptr<gl::Texture> GLBlitHelper::GetColorLutTex(
+    const ColorLutKey& key) const {
+  auto& weak = mColorLutTexMap[key];
+  auto strong = weak.lock();
+  if (!strong) {
+    auto& gl = *mGL;
+    strong = std::make_shared<gl::Texture>(gl);
+    weak = strong;
+
+    const auto ct = color::ColorspaceTransform::Create(key.src, key.dst);
+
+    // -
+
+    const auto minLutSize = color::ivec3{2};
+    const auto maxLutSize = color::ivec3{256};
+    auto lutSize = minLutSize;
+    if (ct.srcSpace.yuv) {
+      lutSize.x(int(StaticPrefs::gfx_blithelper_lut_size_ycbcr_y()));
+      lutSize.y(int(StaticPrefs::gfx_blithelper_lut_size_ycbcr_cb()));
+      lutSize.z(int(StaticPrefs::gfx_blithelper_lut_size_ycbcr_cr()));
+    } else {
+      lutSize.x(int(StaticPrefs::gfx_blithelper_lut_size_rgb_r()));
+      lutSize.y(int(StaticPrefs::gfx_blithelper_lut_size_rgb_g()));
+      lutSize.z(int(StaticPrefs::gfx_blithelper_lut_size_rgb_b()));
+    }
+    lutSize = max(minLutSize, min(lutSize, maxLutSize));  // Clamp
+
+    const auto lut = ct.ToLut3(lutSize);
+    const auto& size = lut.size;
+
+    // -
+
+    constexpr GLenum target = LOCAL_GL_TEXTURE_3D;
+    const auto bind = gl::ScopedBindTexture(&gl, strong->name, target);
+    gl.fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
+    gl.fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
+    gl.fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_R, LOCAL_GL_CLAMP_TO_EDGE);
+    gl.fTexParameteri(target, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
+    gl.fTexParameteri(target, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
+
+    bool useFloat16 = true;
+    if (useFloat16) {
+      // Use rgba16f, which we can thankfully upload as rgba32f
+      static_assert(sizeof(color::vec4) == sizeof(float) * 4);
+      std::vector<color::vec4> uploadData;
+      uploadData.reserve(lut.data.size());
+      for (const auto& src : lut.data) {
+        const auto dst = color::vec4{src, 1};
+        uploadData.push_back(dst);
+      }
+
+      gl.fTexStorage3D(target, 1, LOCAL_GL_RGBA16F, size.x(), size.y(),
+                       size.z());
+      gl.fTexSubImage3D(target, 0, 0, 0, 0, size.x(), size.y(), size.z(),
+                        LOCAL_GL_RGBA, LOCAL_GL_FLOAT, uploadData.data());
+    } else {
+      // Use Rgb10A2
+      std::vector<uint32_t> uploadData;
+      uploadData.reserve(lut.data.size());
+      for (const auto& src : lut.data) {
+        const auto dst = toRgb10A2({src, 1});
+        uploadData.push_back(dst);
+      }
+
+      gl.fTexStorage3D(target, 1, LOCAL_GL_RGB10_A2, size.x(), size.y(),
+                       size.z());
+      gl.fTexSubImage3D(target, 0, 0, 0, 0, size.x(), size.y(), size.z(),
+                        LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV,
+                        uploadData.data());
+    }
+  }
+  return strong;
+}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/GLBlitHelper.h b/gfx/gl/GLBlitHelper.h
new file mode 100644
index 0000000000..fe1423430f
--- /dev/null
+++ b/gfx/gl/GLBlitHelper.h
@@ -0,0 +1,338 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLBLITHELPER_H_
+#define GLBLITHELPER_H_
+
+#include <array>
+#include <cstdint>
+#include <map>
+#include <memory>
+#include <unordered_map>
+#include "Colorspaces.h"
+#include "GLConsts.h"
+#include "GLContextTypes.h"
+#include "GLTypes.h"
+#include "nsSize.h"
+#include "nsString.h"
+#include "nsTString.h"
+#include "mozilla/ipc/IPCTypes.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/gfx/Point.h"
+#include "mozilla/gfx/Rect.h"
+#include "mozilla/gfx/Types.h"
+
+#include <map>
+
+#ifdef XP_WIN
+#  include <windows.h>
+#  include "mozilla/RefPtr.h"
+#  include "mozilla/ipc/IPCTypes.h"
+struct ID3D11Device;
+struct ID3D11Texture2D;
+#endif
+
+#ifdef XP_MACOSX
+class MacIOSurface;
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "mozilla/java/GeckoSurfaceTextureWrappers.h"
+#endif
+
+#ifdef MOZ_WAYLAND
+class DMABufSurface;
+#endif
+
+namespace mozilla {
+
+namespace layers {
+class Image;
+class GPUVideoImage;
+struct PlanarYCbCrData;
+class PlanarYCbCrImage;
+class SurfaceDescriptor;
+class SurfaceDescriptorBuffer;
+
+#ifdef XP_WIN
+class D3D11ShareHandleImage;
+class D3D11TextureIMFSampleImage;
+class D3D11YCbCrImage;
+class SurfaceDescriptorD3D10;
+class SurfaceDescriptorDXGIYCbCr;
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+class SurfaceTextureDescriptor;
+#endif
+
+#ifdef XP_MACOSX
+class MacIOSurfaceImage;
+#endif
+
+#ifdef MOZ_WAYLAND
+class DMABUFSurfaceImage;
+#endif
+}  // namespace layers
+
+namespace gl {
+
+class BindAnglePlanes;
+class GLBlitHelper;
+class GLContext;
+class Texture;
+
+bool GuessDivisors(const gfx::IntSize& ySize, const gfx::IntSize& uvSize,
+                   gfx::IntSize* const out_divisors);
+
+template <uint8_t N>
+struct Mat {
+  float m[N * N];  // column-major, for GL
+
+  float& at(const uint8_t x, const uint8_t y) { return m[N * x + y]; }
+
+  static Mat<N> I() {
+    auto ret = Mat<N>{};
+    for (uint8_t i = 0; i < N; i++) {
+      ret.at(i, i) = 1.0f;
+    }
+    return ret;
+  }
+
+  Mat<N> operator*(const Mat<N>& r) const {
+    Mat<N> ret;
+    for (uint8_t x = 0; x < N; x++) {
+      for (uint8_t y = 0; y < N; y++) {
+        float sum = 0.0f;
+        for (uint8_t i = 0; i < N; i++) {
+          sum += at(i, y) * r.at(x, i);
+        }
+        ret.at(x, y) = sum;
+      }
+    }
+    return ret;
+  }
+};
+typedef Mat<3> Mat3;
+
+Mat3 SubRectMat3(float x, float y, float w, float h);
+Mat3 SubRectMat3(const gfx::IntRect& subrect, const gfx::IntSize& size);
+Mat3 SubRectMat3(const gfx::IntRect& bigSubrect, const gfx::IntSize& smallSize,
+                 const gfx::IntSize& divisors);
+
+class DrawBlitProg final {
+  const GLBlitHelper& mParent;
+  const GLuint mProg;
+  const GLint mLoc_uDestMatrix;
+  const GLint mLoc_uTexMatrix0;
+  const GLint mLoc_uTexMatrix1;
+  const GLint mLoc_uColorLut;
+  const GLint mLoc_uColorMatrix;
+  GLenum mType_uColorMatrix = 0;
+
+ public:
+  struct Key final {
+    const char* fragHeader = nullptr;
+    std::array<const char*, 4> fragParts = {};
+
+    auto Members() const { return std::tie(fragHeader, fragParts); }
+    friend bool operator<(const Key& a, const Key& b) {
+      return a.Members() < b.Members();
+    }
+  };
+
+  DrawBlitProg(const GLBlitHelper* parent, GLuint prog);
+  ~DrawBlitProg();
+
+  struct BaseArgs final {
+    Mat3 texMatrix0;
+    bool yFlip;
+    gfx::IntSize
+        destSize;  // Always needed for (at least) setting the viewport.
+    Maybe<gfx::IntRect> destRect;
+    Maybe<uint32_t> texUnitForColorLut;
+  };
+  struct YUVArgs final {
+    Mat3 texMatrix1;
+    Maybe<gfx::YUVColorSpace> colorSpaceForMatrix;
+  };
+
+  void Draw(const BaseArgs& args, const YUVArgs* argsYUV = nullptr) const;
+};
+
+class ScopedSaveMultiTex final {
+  GLContext& mGL;
+  const std::vector<uint8_t> mTexUnits;
+  const GLenum mTexTarget;
+  const GLuint mOldTexUnit;
+  GLuint mOldTexSampler[3];
+  GLuint mOldTex[3];
+
+ public:
+  ScopedSaveMultiTex(GLContext* gl, const std::vector<uint8_t>& texUnits,
+                     GLenum texTarget);
+  ~ScopedSaveMultiTex();
+};
+
+/** Buffer blitting helper */
+class GLBlitHelper final {
+  friend class BindAnglePlanes;
+  friend class DrawBlitProg;
+  friend class GLContext;
+
+  GLContext* const mGL;
+  mutable std::map<DrawBlitProg::Key, const DrawBlitProg*> mDrawBlitProgs;
+
+  GLuint mQuadVAO = 0;
+  GLuint mQuadVBO = 0;
+  nsCString mDrawBlitProg_VersionLine;
+  const GLuint mDrawBlitProg_VertShader;
+
+  GLuint mYuvUploads[3] = {};
+  gfx::IntSize mYuvUploads_YSize = {0, 0};
+  gfx::IntSize mYuvUploads_UVSize = {0, 0};
+
+ public:
+  struct ColorLutKey {
+    color::ColorspaceDesc src;
+    color::ColorspaceDesc dst;
+
+    auto Members() const { return std::tie(src, dst); }
+    INLINE_AUTO_MAPPABLE(ColorLutKey)
+  };
+
+ private:
+  mutable std::unordered_map<ColorLutKey, std::weak_ptr<gl::Texture>,
+                             ColorLutKey::Hasher>
+      mColorLutTexMap;
+
+ public:
+  std::shared_ptr<gl::Texture> GetColorLutTex(const ColorLutKey& key) const;
+
+#ifdef XP_WIN
+  mutable RefPtr<ID3D11Device> mD3D11;
+
+  ID3D11Device* GetD3D11() const;
+#endif
+
+  const DrawBlitProg* GetDrawBlitProg(const DrawBlitProg::Key& key) const;
+
+ private:
+  const DrawBlitProg* CreateDrawBlitProg(const DrawBlitProg::Key& key) const;
+
+ public:
+  bool BlitPlanarYCbCr(const layers::PlanarYCbCrData&,
+                       const gfx::IntSize& destSize, OriginPos destOrigin);
+#ifdef MOZ_WIDGET_ANDROID
+  bool Blit(const java::GeckoSurfaceTexture::Ref& surfaceTexture,
+            const gfx::IntSize& destSize, const OriginPos destOrigin) const;
+#endif
+#ifdef XP_MACOSX
+  bool BlitImage(layers::MacIOSurfaceImage* srcImage,
+                 const gfx::IntSize& destSize, OriginPos destOrigin) const;
+#endif
+#ifdef MOZ_WAYLAND
+  bool Blit(DMABufSurface* surface, const gfx::IntSize& destSize,
+            OriginPos destOrigin) const;
+  bool BlitImage(layers::DMABUFSurfaceImage* srcImage,
+                 const gfx::IntSize& destSize, OriginPos destOrigin) const;
+#endif
+
+  explicit GLBlitHelper(GLContext* gl);
+
+ public:
+  ~GLBlitHelper();
+
+  void BlitFramebuffer(const gfx::IntRect& srcRect,
+                       const gfx::IntRect& destRect,
+                       GLuint filter = LOCAL_GL_NEAREST) const;
+  void BlitFramebufferToFramebuffer(GLuint srcFB, GLuint destFB,
+                                    const gfx::IntRect& srcRect,
+                                    const gfx::IntRect& destRect,
+                                    GLuint filter = LOCAL_GL_NEAREST) const;
+  void BlitFramebufferToTexture(GLuint destTex, const gfx::IntSize& srcSize,
+                                const gfx::IntSize& destSize,
+                                GLenum destTarget = LOCAL_GL_TEXTURE_2D) const;
+  void BlitTextureToFramebuffer(GLuint srcTex, const gfx::IntSize& srcSize,
+                                const gfx::IntSize& destSize,
+                                GLenum srcTarget = LOCAL_GL_TEXTURE_2D) const;
+  void BlitTextureToTexture(GLuint srcTex, GLuint destTex,
+                            const gfx::IntSize& srcSize,
+                            const gfx::IntSize& destSize,
+                            GLenum srcTarget = LOCAL_GL_TEXTURE_2D,
+                            GLenum destTarget = LOCAL_GL_TEXTURE_2D) const;
+
+  void DrawBlitTextureToFramebuffer(GLuint srcTex, const gfx::IntSize& srcSize,
+                                    const gfx::IntSize& destSize,
+                                    GLenum srcTarget = LOCAL_GL_TEXTURE_2D,
+                                    bool srcIsBGRA = false) const;
+
+  bool BlitImageToFramebuffer(layers::Image* srcImage,
+                              const gfx::IntSize& destSize,
+                              OriginPos destOrigin);
+  bool BlitSdToFramebuffer(const layers::SurfaceDescriptor&,
+                           const gfx::IntSize& destSize, OriginPos destOrigin);
+
+ private:
+  bool BlitImage(layers::GPUVideoImage* srcImage, const gfx::IntSize& destSize,
+                 OriginPos destOrigin) const;
+#ifdef XP_MACOSX
+  bool BlitImage(MacIOSurface* const iosurf, const gfx::IntSize& destSize,
+                 OriginPos destOrigin) const;
+#endif
+#ifdef XP_WIN
+  // GLBlitHelperD3D.cpp:
+  bool BlitImage(layers::D3D11ShareHandleImage* srcImage,
+                 const gfx::IntSize& destSize, OriginPos destOrigin) const;
+  bool BlitImage(layers::D3D11TextureIMFSampleImage* srcImage,
+                 const gfx::IntSize& destSize, OriginPos destOrigin) const;
+  bool BlitImage(layers::D3D11YCbCrImage* srcImage,
+                 const gfx::IntSize& destSize, OriginPos destOrigin) const;
+
+  bool BlitDescriptor(const layers::SurfaceDescriptorD3D10& desc,
+                      const gfx::IntSize& destSize, OriginPos destOrigin) const;
+  bool BlitDescriptor(const layers::SurfaceDescriptorDXGIYCbCr& desc,
+                      const gfx::IntSize& destSize,
+                      const OriginPos destOrigin) const;
+  bool BlitAngleYCbCr(const WindowsHandle (&handleList)[3],
+                      const gfx::IntRect& clipRect, const gfx::IntSize& ySize,
+                      const gfx::IntSize& uvSize,
+                      const gfx::YUVColorSpace colorSpace,
+                      const gfx::IntSize& destSize, OriginPos destOrigin) const;
+
+  bool BlitAnglePlanes(uint8_t numPlanes,
+                       const RefPtr<ID3D11Texture2D>* texD3DList,
+                       const DrawBlitProg* prog,
+                       const DrawBlitProg::BaseArgs& baseArgs,
+                       const DrawBlitProg::YUVArgs* const yuvArgs) const;
+#endif
+};
+
+// -
+// For DrawBlitProg::Key::fragParts
+
+extern const char* const kFragHeader_Tex2D;
+extern const char* const kFragHeader_Tex2DRect;
+extern const char* const kFragHeader_TexExt;
+
+extern const char* const kFragSample_OnePlane;
+extern const char* const kFragSample_TwoPlane;
+extern const char* const kFragSample_ThreePlane;
+
+extern const char* const kFragConvert_None;
+extern const char* const kFragConvert_BGR;
+extern const char* const kFragConvert_ColorMatrix;
+extern const char* const kFragConvert_ColorLut;
+
+extern const char* const kFragMixin_AlphaMultColors;
+extern const char* const kFragMixin_AlphaClampColors;
+extern const char* const kFragMixin_AlphaOne;
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GLBLITHELPER_H_
diff --git a/gfx/gl/GLBlitHelperD3D.cpp b/gfx/gl/GLBlitHelperD3D.cpp
new file mode 100644
index 0000000000..8dda3e45fd
--- /dev/null
+++ b/gfx/gl/GLBlitHelperD3D.cpp
@@ -0,0 +1,383 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLBlitHelper.h"
+
+#include <d3d11.h>
+
+#include "GLContextEGL.h"
+#include "GLLibraryEGL.h"
+#include "GPUVideoImage.h"
+#include "ScopedGLHelpers.h"
+
+#include "mozilla/layers/D3D11ShareHandleImage.h"
+#include "mozilla/layers/D3D11TextureIMFSampleImage.h"
+#include "mozilla/layers/D3D11YCbCrImage.h"
+#include "mozilla/layers/TextureD3D11.h"
+#include "mozilla/StaticPrefs_gl.h"
+
+namespace mozilla {
+namespace gl {
+
+#define NOTE_IF_FALSE(expr)                          \
+  do {                                               \
+    if (!(expr)) {                                   \
+      gfxCriticalNote << "NOTE_IF_FALSE: " << #expr; \
+    }                                                \
+  } while (false)
+
+static EGLStreamKHR StreamFromD3DTexture(EglDisplay* const egl,
+                                         ID3D11Texture2D* const texD3D,
+                                         const EGLAttrib* const postAttribs) {
+  if (!egl->IsExtensionSupported(
+          EGLExtension::NV_stream_consumer_gltexture_yuv) ||
+      !egl->IsExtensionSupported(
+          EGLExtension::ANGLE_stream_producer_d3d_texture)) {
+    return 0;
+  }
+
+  const auto stream = egl->fCreateStreamKHR(nullptr);
+  MOZ_ASSERT(stream);
+  if (!stream) return 0;
+  bool ok = true;
+  NOTE_IF_FALSE(ok &= bool(egl->fStreamConsumerGLTextureExternalAttribsNV(
+                    stream, nullptr)));
+  NOTE_IF_FALSE(
+      ok &= bool(egl->fCreateStreamProducerD3DTextureANGLE(stream, nullptr)));
+  NOTE_IF_FALSE(
+      ok &= bool(egl->fStreamPostD3DTextureANGLE(stream, texD3D, postAttribs)));
+  if (ok) return stream;
+
+  (void)egl->fDestroyStreamKHR(stream);
+  return 0;
+}
+
+static RefPtr<ID3D11Texture2D> OpenSharedTexture(ID3D11Device* const d3d,
+                                                 const WindowsHandle handle) {
+  RefPtr<ID3D11Texture2D> tex;
+  auto hr =
+      d3d->OpenSharedResource((HANDLE)handle, __uuidof(ID3D11Texture2D),
+                              (void**)(ID3D11Texture2D**)getter_AddRefs(tex));
+  if (FAILED(hr)) {
+    gfxCriticalError() << "Error code from OpenSharedResource: "
+                       << gfx::hexa(hr);
+    return nullptr;
+  }
+  return tex;
+}
+
+// -------------------------------------
+
+class BindAnglePlanes final {
+  const GLBlitHelper& mParent;
+  const uint8_t mNumPlanes;
+  const ScopedSaveMultiTex mMultiTex;
+  GLuint mTempTexs[3];
+  EGLStreamKHR mStreams[3];
+  RefPtr<IDXGIKeyedMutex> mMutexList[3];
+  bool mSuccess;
+
+ public:
+  BindAnglePlanes(const GLBlitHelper* const parent, const uint8_t numPlanes,
+                  const RefPtr<ID3D11Texture2D>* const texD3DList,
+                  const EGLAttrib* const* postAttribsList = nullptr)
+      : mParent(*parent),
+        mNumPlanes(numPlanes),
+        mMultiTex(
+            mParent.mGL,
+            [&]() {
+              std::vector<uint8_t> ret;
+              for (int i = 0; i < numPlanes; i++) {
+                ret.push_back(i);
+              }
+              return ret;
+            }(),
+            LOCAL_GL_TEXTURE_EXTERNAL),
+        mTempTexs{0},
+        mStreams{0},
+        mSuccess(true) {
+    MOZ_RELEASE_ASSERT(numPlanes >= 1 && numPlanes <= 3);
+
+    const auto& gl = mParent.mGL;
+    const auto& gle = GLContextEGL::Cast(gl);
+    const auto& egl = gle->mEgl;
+
+    gl->fGenTextures(numPlanes, mTempTexs);
+
+    for (uint8_t i = 0; i < mNumPlanes; i++) {
+      gl->fActiveTexture(LOCAL_GL_TEXTURE0 + i);
+      gl->fBindTexture(LOCAL_GL_TEXTURE_EXTERNAL, mTempTexs[i]);
+      const EGLAttrib* postAttribs = nullptr;
+      if (postAttribsList) {
+        postAttribs = postAttribsList[i];
+      }
+      mStreams[i] = StreamFromD3DTexture(egl.get(), texD3DList[i], postAttribs);
+      mSuccess &= bool(mStreams[i]);
+    }
+
+    if (mSuccess) {
+      for (uint8_t i = 0; i < mNumPlanes; i++) {
+        NOTE_IF_FALSE(egl->fStreamConsumerAcquireKHR(mStreams[i]));
+
+        auto& mutex = mMutexList[i];
+        texD3DList[i]->QueryInterface(IID_IDXGIKeyedMutex,
+                                      (void**)getter_AddRefs(mutex));
+        if (mutex) {
+          const auto hr = mutex->AcquireSync(0, 100);
+          if (FAILED(hr)) {
+            NS_WARNING("BindAnglePlanes failed to acquire KeyedMutex.");
+            mSuccess = false;
+          }
+        }
+      }
+    }
+  }
+
+  ~BindAnglePlanes() {
+    const auto& gl = mParent.mGL;
+    const auto& gle = GLContextEGL::Cast(gl);
+    const auto& egl = gle->mEgl;
+
+    if (mSuccess) {
+      for (uint8_t i = 0; i < mNumPlanes; i++) {
+        NOTE_IF_FALSE(egl->fStreamConsumerReleaseKHR(mStreams[i]));
+        if (mMutexList[i]) {
+          mMutexList[i]->ReleaseSync(0);
+        }
+      }
+    }
+
+    for (uint8_t i = 0; i < mNumPlanes; i++) {
+      (void)egl->fDestroyStreamKHR(mStreams[i]);
+    }
+
+    gl->fDeleteTextures(mNumPlanes, mTempTexs);
+  }
+
+  const bool& Success() const { return mSuccess; }
+};
+
+// -------------------------------------
+
+ID3D11Device* GLBlitHelper::GetD3D11() const {
+  if (mD3D11) return mD3D11;
+
+  if (!mGL->IsANGLE()) return nullptr;
+
+  const auto& gle = GLContextEGL::Cast(mGL);
+  const auto& egl = gle->mEgl;
+  EGLDeviceEXT deviceEGL = 0;
+  NOTE_IF_FALSE(egl->fQueryDisplayAttribEXT(LOCAL_EGL_DEVICE_EXT,
+                                            (EGLAttrib*)&deviceEGL));
+  ID3D11Device* device = nullptr;
+  // ANGLE does not `AddRef` its returned pointer for `QueryDeviceAttrib`, so no
+  // `getter_AddRefs`.
+  if (!egl->mLib->fQueryDeviceAttribEXT(deviceEGL, LOCAL_EGL_D3D11_DEVICE_ANGLE,
+                                        (EGLAttrib*)&device)) {
+    MOZ_ASSERT(false, "d3d9?");
+    return nullptr;
+  }
+  mD3D11 = device;
+  return mD3D11;
+}
+
+// -------------------------------------
+
+bool GLBlitHelper::BlitImage(layers::D3D11ShareHandleImage* const srcImage,
+                             const gfx::IntSize& destSize,
+                             const OriginPos destOrigin) const {
+  const auto& data = srcImage->GetData();
+  if (!data) return false;
+
+  layers::SurfaceDescriptorD3D10 desc;
+  if (!data->SerializeSpecific(&desc)) return false;
+
+  return BlitDescriptor(desc, destSize, destOrigin);
+}
+
+// -------------------------------------
+
+bool GLBlitHelper::BlitImage(layers::D3D11TextureIMFSampleImage* const srcImage,
+                             const gfx::IntSize& destSize,
+                             const OriginPos destOrigin) const {
+  const auto& data = srcImage->GetData();
+  if (!data) return false;
+
+  layers::SurfaceDescriptorD3D10 desc;
+  if (!data->SerializeSpecific(&desc)) return false;
+
+  return BlitDescriptor(desc, destSize, destOrigin);
+}
+
+// -------------------------------------
+
+bool GLBlitHelper::BlitImage(layers::D3D11YCbCrImage* const srcImage,
+                             const gfx::IntSize& destSize,
+                             const OriginPos destOrigin) const {
+  const auto& data = srcImage->GetData();
+  if (!data) return false;
+
+  const WindowsHandle handles[3] = {(WindowsHandle)data->mHandles[0],
+                                    (WindowsHandle)data->mHandles[1],
+                                    (WindowsHandle)data->mHandles[2]};
+  return BlitAngleYCbCr(handles, srcImage->mPictureRect, srcImage->GetYSize(),
+                        srcImage->GetCbCrSize(), srcImage->mColorSpace,
+                        destSize, destOrigin);
+}
+
+// -------------------------------------
+
+bool GLBlitHelper::BlitDescriptor(const layers::SurfaceDescriptorD3D10& desc,
+                                  const gfx::IntSize& destSize,
+                                  const OriginPos destOrigin) const {
+  const auto& d3d = GetD3D11();
+  if (!d3d) return false;
+
+  const auto& handle = desc.handle();
+  const auto& gpuProcessTextureId = desc.gpuProcessTextureId();
+  const auto& arrayIndex = desc.arrayIndex();
+  const auto& format = desc.format();
+  const auto& clipSize = desc.size();
+
+  const auto srcOrigin = OriginPos::BottomLeft;
+  const gfx::IntRect clipRect(0, 0, clipSize.width, clipSize.height);
+  const auto colorSpace = desc.colorSpace();
+
+  if (format != gfx::SurfaceFormat::NV12 &&
+      format != gfx::SurfaceFormat::P010 &&
+      format != gfx::SurfaceFormat::P016) {
+    gfxCriticalError() << "Non-NV12 format for SurfaceDescriptorD3D10: "
+                       << uint32_t(format);
+    return false;
+  }
+
+  RefPtr<ID3D11Texture2D> tex;
+  if (gpuProcessTextureId.isSome()) {
+    auto* textureMap = layers::GpuProcessD3D11TextureMap::Get();
+    if (textureMap) {
+      Maybe<HANDLE> handle =
+          textureMap->GetSharedHandleOfCopiedTexture(gpuProcessTextureId.ref());
+      if (handle.isSome()) {
+        tex = OpenSharedTexture(d3d, (WindowsHandle)handle.ref());
+      }
+    }
+  } else {
+    tex = OpenSharedTexture(d3d, handle);
+  }
+  if (!tex) {
+    MOZ_GL_ASSERT(mGL, false);  // Get a nullptr from OpenSharedResource.
+    return false;
+  }
+  const RefPtr<ID3D11Texture2D> texList[2] = {tex, tex};
+  const EGLAttrib postAttribs0[] = {LOCAL_EGL_NATIVE_BUFFER_PLANE_OFFSET_IMG, 0,
+                                    LOCAL_EGL_D3D_TEXTURE_SUBRESOURCE_ID_ANGLE,
+                                    static_cast<EGLAttrib>(arrayIndex),
+                                    LOCAL_EGL_NONE};
+  const EGLAttrib postAttribs1[] = {LOCAL_EGL_NATIVE_BUFFER_PLANE_OFFSET_IMG, 1,
+                                    LOCAL_EGL_D3D_TEXTURE_SUBRESOURCE_ID_ANGLE,
+                                    static_cast<EGLAttrib>(arrayIndex),
+                                    LOCAL_EGL_NONE};
+  const EGLAttrib* const postAttribsList[2] = {postAttribs0, postAttribs1};
+  // /layers/d3d11/CompositorD3D11.cpp uses bt601 for EffectTypes::NV12.
+  // return BlitAngleNv12(tex, YUVColorSpace::BT601, destSize, destOrigin);
+
+  const BindAnglePlanes bindPlanes(this, 2, texList, postAttribsList);
+  if (!bindPlanes.Success()) {
+    MOZ_GL_ASSERT(mGL, false);  // BindAnglePlanes failed.
+    return false;
+  }
+
+  D3D11_TEXTURE2D_DESC texDesc = {0};
+  tex->GetDesc(&texDesc);
+
+  const gfx::IntSize ySize(texDesc.Width, texDesc.Height);
+  const gfx::IntSize divisors(2, 2);
+  MOZ_ASSERT(ySize.width % divisors.width == 0);
+  MOZ_ASSERT(ySize.height % divisors.height == 0);
+  const gfx::IntSize uvSize(ySize.width / divisors.width,
+                            ySize.height / divisors.height);
+
+  const auto yuvColorSpace = [&]() {
+    switch (colorSpace) {
+      case gfx::ColorSpace2::UNKNOWN:
+      case gfx::ColorSpace2::SRGB:
+      case gfx::ColorSpace2::DISPLAY_P3:
+        MOZ_CRASH("Expected BT* colorspace");
+      case gfx::ColorSpace2::BT601_525:
+        return gfx::YUVColorSpace::BT601;
+      case gfx::ColorSpace2::BT709:
+        return gfx::YUVColorSpace::BT709;
+      case gfx::ColorSpace2::BT2020:
+        return gfx::YUVColorSpace::BT2020;
+    }
+    MOZ_ASSERT_UNREACHABLE();
+  }();
+
+  const bool yFlip = destOrigin != srcOrigin;
+  const DrawBlitProg::BaseArgs baseArgs = {SubRectMat3(clipRect, ySize), yFlip,
+                                           destSize, Nothing()};
+  const DrawBlitProg::YUVArgs yuvArgs = {
+      SubRectMat3(clipRect, uvSize, divisors), Some(yuvColorSpace)};
+
+  const auto& prog = GetDrawBlitProg(
+      {kFragHeader_TexExt, {kFragSample_TwoPlane, kFragConvert_ColorMatrix}});
+  prog->Draw(baseArgs, &yuvArgs);
+  return true;
+}
+
+bool GLBlitHelper::BlitDescriptor(
+    const layers::SurfaceDescriptorDXGIYCbCr& desc,
+    const gfx::IntSize& destSize, const OriginPos destOrigin) const {
+  const auto& clipSize = desc.size();
+  const auto& ySize = desc.sizeY();
+  const auto& uvSize = desc.sizeCbCr();
+  const auto& colorSpace = desc.yUVColorSpace();
+
+  const gfx::IntRect clipRect(0, 0, clipSize.width, clipSize.height);
+
+  const WindowsHandle handles[3] = {desc.handleY(), desc.handleCb(),
+                                    desc.handleCr()};
+  return BlitAngleYCbCr(handles, clipRect, ySize, uvSize, colorSpace, destSize,
+                        destOrigin);
+}
+
+// --
+
+bool GLBlitHelper::BlitAngleYCbCr(const WindowsHandle (&handleList)[3],
+                                  const gfx::IntRect& clipRect,
+                                  const gfx::IntSize& ySize,
+                                  const gfx::IntSize& uvSize,
+                                  const gfx::YUVColorSpace colorSpace,
+                                  const gfx::IntSize& destSize,
+                                  const OriginPos destOrigin) const {
+  const auto& d3d = GetD3D11();
+  if (!d3d) return false;
+
+  const auto srcOrigin = OriginPos::BottomLeft;
+
+  gfx::IntSize divisors;
+  if (!GuessDivisors(ySize, uvSize, &divisors)) return false;
+
+  const RefPtr<ID3D11Texture2D> texList[3] = {
+      OpenSharedTexture(d3d, handleList[0]),
+      OpenSharedTexture(d3d, handleList[1]),
+      OpenSharedTexture(d3d, handleList[2])};
+  const BindAnglePlanes bindPlanes(this, 3, texList);
+
+  const bool yFlip = destOrigin != srcOrigin;
+  const DrawBlitProg::BaseArgs baseArgs = {SubRectMat3(clipRect, ySize), yFlip,
+                                           destSize, Nothing()};
+  const DrawBlitProg::YUVArgs yuvArgs = {
+      SubRectMat3(clipRect, uvSize, divisors), Some(colorSpace)};
+
+  const auto& prog = GetDrawBlitProg(
+      {kFragHeader_TexExt, {kFragSample_ThreePlane, kFragConvert_ColorMatrix}});
+  prog->Draw(baseArgs, &yuvArgs);
+  return true;
+}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/GLConsts.h b/gfx/gl/GLConsts.h
new file mode 100644
index 0000000000..97744d4215
--- /dev/null
+++ b/gfx/gl/GLConsts.h
@@ -0,0 +1,7204 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// clang-format off
+
+#ifndef GLCONSTS_H_
+#define GLCONSTS_H_
+
+/**
+ * GENERATED FILE, DO NOT MODIFY DIRECTLY.
+ * This is a file generated directly from the official OpenGL registry
+ * xml available http://www.opengl.org/registry/#specfiles.
+ *
+ * To generate this file, see tutorial in 'GLConsts.py'.
+ */
+
+// GL
+#define LOCAL_GL_1PASS_EXT                                   0x80A1
+#define LOCAL_GL_1PASS_SGIS                                  0x80A1
+#define LOCAL_GL_2D                                          0x0600
+#define LOCAL_GL_2PASS_0_EXT                                 0x80A2
+#define LOCAL_GL_2PASS_0_SGIS                                0x80A2
+#define LOCAL_GL_2PASS_1_EXT                                 0x80A3
+#define LOCAL_GL_2PASS_1_SGIS                                0x80A3
+#define LOCAL_GL_2X_BIT_ATI                                  0x00000001
+#define LOCAL_GL_2_BYTES                                     0x1407
+#define LOCAL_GL_2_BYTES_NV                                  0x1407
+#define LOCAL_GL_3D                                          0x0601
+#define LOCAL_GL_3DC_XY_AMD                                  0x87FA
+#define LOCAL_GL_3DC_X_AMD                                   0x87F9
+#define LOCAL_GL_3D_COLOR                                    0x0602
+#define LOCAL_GL_3D_COLOR_TEXTURE                            0x0603
+#define LOCAL_GL_3_BYTES                                     0x1408
+#define LOCAL_GL_3_BYTES_NV                                  0x1408
+#define LOCAL_GL_422_AVERAGE_EXT                             0x80CE
+#define LOCAL_GL_422_EXT                                     0x80CC
+#define LOCAL_GL_422_REV_AVERAGE_EXT                         0x80CF
+#define LOCAL_GL_422_REV_EXT                                 0x80CD
+#define LOCAL_GL_4D_COLOR_TEXTURE                            0x0604
+#define LOCAL_GL_4PASS_0_EXT                                 0x80A4
+#define LOCAL_GL_4PASS_0_SGIS                                0x80A4
+#define LOCAL_GL_4PASS_1_EXT                                 0x80A5
+#define LOCAL_GL_4PASS_1_SGIS                                0x80A5
+#define LOCAL_GL_4PASS_2_EXT                                 0x80A6
+#define LOCAL_GL_4PASS_2_SGIS                                0x80A6
+#define LOCAL_GL_4PASS_3_EXT                                 0x80A7
+#define LOCAL_GL_4PASS_3_SGIS                                0x80A7
+#define LOCAL_GL_4X_BIT_ATI                                  0x00000002
+#define LOCAL_GL_4_BYTES                                     0x1409
+#define LOCAL_GL_4_BYTES_NV                                  0x1409
+#define LOCAL_GL_8X_BIT_ATI                                  0x00000004
+#define LOCAL_GL_ABGR_EXT                                    0x8000
+#define LOCAL_GL_ACCUM                                       0x0100
+#define LOCAL_GL_ACCUM_ADJACENT_PAIRS_NV                     0x90AD
+#define LOCAL_GL_ACCUM_ALPHA_BITS                            0x0D5B
+#define LOCAL_GL_ACCUM_BLUE_BITS                             0x0D5A
+#define LOCAL_GL_ACCUM_BUFFER_BIT                            0x00000200
+#define LOCAL_GL_ACCUM_CLEAR_VALUE                           0x0B80
+#define LOCAL_GL_ACCUM_GREEN_BITS                            0x0D59
+#define LOCAL_GL_ACCUM_RED_BITS                              0x0D58
+#define LOCAL_GL_ACTIVE_ATOMIC_COUNTER_BUFFERS               0x92D9
+#define LOCAL_GL_ACTIVE_ATTRIBUTES                           0x8B89
+#define LOCAL_GL_ACTIVE_ATTRIBUTE_MAX_LENGTH                 0x8B8A
+#define LOCAL_GL_ACTIVE_PROGRAM                              0x8259
+#define LOCAL_GL_ACTIVE_PROGRAM_EXT                          0x8B8D
+#define LOCAL_GL_ACTIVE_RESOURCES                            0x92F5
+#define LOCAL_GL_ACTIVE_STENCIL_FACE_EXT                     0x8911
+#define LOCAL_GL_ACTIVE_SUBROUTINES                          0x8DE5
+#define LOCAL_GL_ACTIVE_SUBROUTINE_MAX_LENGTH                0x8E48
+#define LOCAL_GL_ACTIVE_SUBROUTINE_UNIFORMS                  0x8DE6
+#define LOCAL_GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS         0x8E47
+#define LOCAL_GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH        0x8E49
+#define LOCAL_GL_ACTIVE_TEXTURE                              0x84E0
+#define LOCAL_GL_ACTIVE_TEXTURE_ARB                          0x84E0
+#define LOCAL_GL_ACTIVE_UNIFORMS                             0x8B86
+#define LOCAL_GL_ACTIVE_UNIFORM_BLOCKS                       0x8A36
+#define LOCAL_GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH        0x8A35
+#define LOCAL_GL_ACTIVE_UNIFORM_MAX_LENGTH                   0x8B87
+#define LOCAL_GL_ACTIVE_VARIABLES                            0x9305
+#define LOCAL_GL_ACTIVE_VARYINGS_NV                          0x8C81
+#define LOCAL_GL_ACTIVE_VARYING_MAX_LENGTH_NV                0x8C82
+#define LOCAL_GL_ACTIVE_VERTEX_UNITS_ARB                     0x86A5
+#define LOCAL_GL_ADD                                         0x0104
+#define LOCAL_GL_ADD_ATI                                     0x8963
+#define LOCAL_GL_ADD_BLEND_IMG                               0x8C09
+#define LOCAL_GL_ADD_SIGNED                                  0x8574
+#define LOCAL_GL_ADD_SIGNED_ARB                              0x8574
+#define LOCAL_GL_ADD_SIGNED_EXT                              0x8574
+#define LOCAL_GL_ADJACENT_PAIRS_NV                           0x90AE
+#define LOCAL_GL_AFFINE_2D_NV                                0x9092
+#define LOCAL_GL_AFFINE_3D_NV                                0x9094
+#define LOCAL_GL_ALIASED_LINE_WIDTH_RANGE                    0x846E
+#define LOCAL_GL_ALIASED_POINT_SIZE_RANGE                    0x846D
+#define LOCAL_GL_ALLOW_DRAW_FRG_HINT_PGI                     0x1A210
+#define LOCAL_GL_ALLOW_DRAW_MEM_HINT_PGI                     0x1A211
+#define LOCAL_GL_ALLOW_DRAW_OBJ_HINT_PGI                     0x1A20E
+#define LOCAL_GL_ALLOW_DRAW_WIN_HINT_PGI                     0x1A20F
+#define LOCAL_GL_ALL_ATTRIB_BITS                             0xFFFFFFFF
+#define LOCAL_GL_ALL_BARRIER_BITS                            0xFFFFFFFF
+#define LOCAL_GL_ALL_BARRIER_BITS_EXT                        0xFFFFFFFF
+#define LOCAL_GL_ALL_COMPLETED_NV                            0x84F2
+#define LOCAL_GL_ALL_PIXELS_AMD                              0xFFFFFFFF
+#define LOCAL_GL_ALL_SHADER_BITS                             0xFFFFFFFF
+#define LOCAL_GL_ALL_SHADER_BITS_EXT                         0xFFFFFFFF
+#define LOCAL_GL_ALL_STATIC_DATA_IBM                         103060
+#define LOCAL_GL_ALPHA                                       0x1906
+#define LOCAL_GL_ALPHA12                                     0x803D
+#define LOCAL_GL_ALPHA12_EXT                                 0x803D
+#define LOCAL_GL_ALPHA16                                     0x803E
+#define LOCAL_GL_ALPHA16F_ARB                                0x881C
+#define LOCAL_GL_ALPHA16F_EXT                                0x881C
+#define LOCAL_GL_ALPHA16I_EXT                                0x8D8A
+#define LOCAL_GL_ALPHA16UI_EXT                               0x8D78
+#define LOCAL_GL_ALPHA16_EXT                                 0x803E
+#define LOCAL_GL_ALPHA16_SNORM                               0x9018
+#define LOCAL_GL_ALPHA32F_ARB                                0x8816
+#define LOCAL_GL_ALPHA32F_EXT                                0x8816
+#define LOCAL_GL_ALPHA32I_EXT                                0x8D84
+#define LOCAL_GL_ALPHA32UI_EXT                               0x8D72
+#define LOCAL_GL_ALPHA4                                      0x803B
+#define LOCAL_GL_ALPHA4_EXT                                  0x803B
+#define LOCAL_GL_ALPHA8                                      0x803C
+#define LOCAL_GL_ALPHA8I_EXT                                 0x8D90
+#define LOCAL_GL_ALPHA8UI_EXT                                0x8D7E
+#define LOCAL_GL_ALPHA8_EXT                                  0x803C
+#define LOCAL_GL_ALPHA8_OES                                  0x803C
+#define LOCAL_GL_ALPHA8_SNORM                                0x9014
+#define LOCAL_GL_ALPHA_BIAS                                  0x0D1D
+#define LOCAL_GL_ALPHA_BITS                                  0x0D55
+#define LOCAL_GL_ALPHA_FLOAT16_APPLE                         0x881C
+#define LOCAL_GL_ALPHA_FLOAT16_ATI                           0x881C
+#define LOCAL_GL_ALPHA_FLOAT32_APPLE                         0x8816
+#define LOCAL_GL_ALPHA_FLOAT32_ATI                           0x8816
+#define LOCAL_GL_ALPHA_INTEGER                               0x8D97
+#define LOCAL_GL_ALPHA_INTEGER_EXT                           0x8D97
+#define LOCAL_GL_ALPHA_MAX_CLAMP_INGR                        0x8567
+#define LOCAL_GL_ALPHA_MAX_SGIX                              0x8321
+#define LOCAL_GL_ALPHA_MIN_CLAMP_INGR                        0x8563
+#define LOCAL_GL_ALPHA_MIN_SGIX                              0x8320
+#define LOCAL_GL_ALPHA_REF_COMMAND_NV                        0x000F
+#define LOCAL_GL_ALPHA_SCALE                                 0x0D1C
+#define LOCAL_GL_ALPHA_SNORM                                 0x9010
+#define LOCAL_GL_ALPHA_TEST                                  0x0BC0
+#define LOCAL_GL_ALPHA_TEST_FUNC                             0x0BC1
+#define LOCAL_GL_ALPHA_TEST_FUNC_QCOM                        0x0BC1
+#define LOCAL_GL_ALPHA_TEST_QCOM                             0x0BC0
+#define LOCAL_GL_ALPHA_TEST_REF                              0x0BC2
+#define LOCAL_GL_ALPHA_TEST_REF_QCOM                         0x0BC2
+#define LOCAL_GL_ALPHA_TO_COVERAGE_DITHER_DEFAULT_NV         0x934D
+#define LOCAL_GL_ALPHA_TO_COVERAGE_DITHER_DISABLE_NV         0x934F
+#define LOCAL_GL_ALPHA_TO_COVERAGE_DITHER_ENABLE_NV          0x934E
+#define LOCAL_GL_ALPHA_TO_COVERAGE_DITHER_MODE_NV            0x92BF
+#define LOCAL_GL_ALREADY_SIGNALED                            0x911A
+#define LOCAL_GL_ALREADY_SIGNALED_APPLE                      0x911A
+#define LOCAL_GL_ALWAYS                                      0x0207
+#define LOCAL_GL_ALWAYS_FAST_HINT_PGI                        0x1A20C
+#define LOCAL_GL_ALWAYS_SOFT_HINT_PGI                        0x1A20D
+#define LOCAL_GL_AMBIENT                                     0x1200
+#define LOCAL_GL_AMBIENT_AND_DIFFUSE                         0x1602
+#define LOCAL_GL_AND                                         0x1501
+#define LOCAL_GL_AND_INVERTED                                0x1504
+#define LOCAL_GL_AND_REVERSE                                 0x1502
+#define LOCAL_GL_ANY_SAMPLES_PASSED                          0x8C2F
+#define LOCAL_GL_ANY_SAMPLES_PASSED_CONSERVATIVE             0x8D6A
+#define LOCAL_GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT         0x8D6A
+#define LOCAL_GL_ANY_SAMPLES_PASSED_EXT                      0x8C2F
+#define LOCAL_GL_ARC_TO_NV                                   0xFE
+#define LOCAL_GL_ARRAY_BUFFER                                0x8892
+#define LOCAL_GL_ARRAY_BUFFER_ARB                            0x8892
+#define LOCAL_GL_ARRAY_BUFFER_BINDING                        0x8894
+#define LOCAL_GL_ARRAY_BUFFER_BINDING_ARB                    0x8894
+#define LOCAL_GL_ARRAY_ELEMENT_LOCK_COUNT_EXT                0x81A9
+#define LOCAL_GL_ARRAY_ELEMENT_LOCK_FIRST_EXT                0x81A8
+#define LOCAL_GL_ARRAY_OBJECT_BUFFER_ATI                     0x8766
+#define LOCAL_GL_ARRAY_OBJECT_OFFSET_ATI                     0x8767
+#define LOCAL_GL_ARRAY_SIZE                                  0x92FB
+#define LOCAL_GL_ARRAY_STRIDE                                0x92FE
+#define LOCAL_GL_ASYNC_DRAW_PIXELS_SGIX                      0x835D
+#define LOCAL_GL_ASYNC_HISTOGRAM_SGIX                        0x832C
+#define LOCAL_GL_ASYNC_MARKER_SGIX                           0x8329
+#define LOCAL_GL_ASYNC_READ_PIXELS_SGIX                      0x835E
+#define LOCAL_GL_ASYNC_TEX_IMAGE_SGIX                        0x835C
+#define LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA_AMD                 0x8C93
+#define LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD             0x87EE
+#define LOCAL_GL_ATC_RGB_AMD                                 0x8C92
+#define LOCAL_GL_ATOMIC_COUNTER_BARRIER_BIT                  0x00001000
+#define LOCAL_GL_ATOMIC_COUNTER_BARRIER_BIT_EXT              0x00001000
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER                       0x92C0
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_ACTIVE_ATOMIC_COUNTERS        0x92C5
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_ACTIVE_ATOMIC_COUNTER_INDICES 0x92C6
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_BINDING               0x92C1
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_DATA_SIZE             0x92C4
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_INDEX                 0x9301
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_COMPUTE_SHADER  0x90ED
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_FRAGMENT_SHADER 0x92CB
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_GEOMETRY_SHADER 0x92CA
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_MESH_SHADER_NV  0x959E
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TASK_SHADER_NV  0x959F
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TESS_CONTROL_SHADER     0x92C8
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_TESS_EVALUATION_SHADER  0x92C9
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_REFERENCED_BY_VERTEX_SHADER   0x92C7
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_SIZE                  0x92C3
+#define LOCAL_GL_ATOMIC_COUNTER_BUFFER_START                 0x92C2
+#define LOCAL_GL_ATTACHED_MEMORY_OBJECT_NV                   0x95A4
+#define LOCAL_GL_ATTACHED_MEMORY_OFFSET_NV                   0x95A5
+#define LOCAL_GL_ATTACHED_SHADERS                            0x8B85
+#define LOCAL_GL_ATTENUATION_EXT                             0x834D
+#define LOCAL_GL_ATTRIBUTE_ADDRESS_COMMAND_NV                0x0009
+#define LOCAL_GL_ATTRIB_ARRAY_POINTER_NV                     0x8645
+#define LOCAL_GL_ATTRIB_ARRAY_SIZE_NV                        0x8623
+#define LOCAL_GL_ATTRIB_ARRAY_STRIDE_NV                      0x8624
+#define LOCAL_GL_ATTRIB_ARRAY_TYPE_NV                        0x8625
+#define LOCAL_GL_ATTRIB_STACK_DEPTH                          0x0BB0
+#define LOCAL_GL_AUTO_GENERATE_MIPMAP                        0x8295
+#define LOCAL_GL_AUTO_NORMAL                                 0x0D80
+#define LOCAL_GL_AUX0                                        0x0409
+#define LOCAL_GL_AUX1                                        0x040A
+#define LOCAL_GL_AUX2                                        0x040B
+#define LOCAL_GL_AUX3                                        0x040C
+#define LOCAL_GL_AUX_BUFFERS                                 0x0C00
+#define LOCAL_GL_AUX_DEPTH_STENCIL_APPLE                     0x8A14
+#define LOCAL_GL_AVERAGE_EXT                                 0x8335
+#define LOCAL_GL_AVERAGE_HP                                  0x8160
+#define LOCAL_GL_BACK                                        0x0405
+#define LOCAL_GL_BACK_LEFT                                   0x0402
+#define LOCAL_GL_BACK_NORMALS_HINT_PGI                       0x1A223
+#define LOCAL_GL_BACK_PRIMARY_COLOR_NV                       0x8C77
+#define LOCAL_GL_BACK_RIGHT                                  0x0403
+#define LOCAL_GL_BACK_SECONDARY_COLOR_NV                     0x8C78
+#define LOCAL_GL_BEVEL_NV                                    0x90A6
+#define LOCAL_GL_BGR                                         0x80E0
+#define LOCAL_GL_BGRA                                        0x80E1
+#define LOCAL_GL_BGRA8_EXT                                   0x93A1
+#define LOCAL_GL_BGRA_EXT                                    0x80E1
+#define LOCAL_GL_BGRA_IMG                                    0x80E1
+#define LOCAL_GL_BGRA_INTEGER                                0x8D9B
+#define LOCAL_GL_BGRA_INTEGER_EXT                            0x8D9B
+#define LOCAL_GL_BGR_EXT                                     0x80E0
+#define LOCAL_GL_BGR_INTEGER                                 0x8D9A
+#define LOCAL_GL_BGR_INTEGER_EXT                             0x8D9A
+#define LOCAL_GL_BIAS_BIT_ATI                                0x00000008
+#define LOCAL_GL_BIAS_BY_NEGATIVE_ONE_HALF_NV                0x8541
+#define LOCAL_GL_BINNING_CONTROL_HINT_QCOM                   0x8FB0
+#define LOCAL_GL_BINORMAL_ARRAY_EXT                          0x843A
+#define LOCAL_GL_BINORMAL_ARRAY_POINTER_EXT                  0x8443
+#define LOCAL_GL_BINORMAL_ARRAY_STRIDE_EXT                   0x8441
+#define LOCAL_GL_BINORMAL_ARRAY_TYPE_EXT                     0x8440
+#define LOCAL_GL_BITMAP                                      0x1A00
+#define LOCAL_GL_BITMAP_TOKEN                                0x0704
+#define LOCAL_GL_BLACKHOLE_RENDER_INTEL                      0x83FC
+#define LOCAL_GL_BLEND                                       0x0BE2
+#define LOCAL_GL_BLEND_ADVANCED_COHERENT_KHR                 0x9285
+#define LOCAL_GL_BLEND_ADVANCED_COHERENT_NV                  0x9285
+#define LOCAL_GL_BLEND_COLOR                                 0x8005
+#define LOCAL_GL_BLEND_COLOR_COMMAND_NV                      0x000B
+#define LOCAL_GL_BLEND_COLOR_EXT                             0x8005
+#define LOCAL_GL_BLEND_DST                                   0x0BE0
+#define LOCAL_GL_BLEND_DST_ALPHA                             0x80CA
+#define LOCAL_GL_BLEND_DST_ALPHA_EXT                         0x80CA
+#define LOCAL_GL_BLEND_DST_ALPHA_OES                         0x80CA
+#define LOCAL_GL_BLEND_DST_RGB                               0x80C8
+#define LOCAL_GL_BLEND_DST_RGB_EXT                           0x80C8
+#define LOCAL_GL_BLEND_DST_RGB_OES                           0x80C8
+#define LOCAL_GL_BLEND_EQUATION                              0x8009
+#define LOCAL_GL_BLEND_EQUATION_ALPHA                        0x883D
+#define LOCAL_GL_BLEND_EQUATION_ALPHA_EXT                    0x883D
+#define LOCAL_GL_BLEND_EQUATION_ALPHA_OES                    0x883D
+#define LOCAL_GL_BLEND_EQUATION_EXT                          0x8009
+#define LOCAL_GL_BLEND_EQUATION_OES                          0x8009
+#define LOCAL_GL_BLEND_EQUATION_RGB                          0x8009
+#define LOCAL_GL_BLEND_EQUATION_RGB_EXT                      0x8009
+#define LOCAL_GL_BLEND_EQUATION_RGB_OES                      0x8009
+#define LOCAL_GL_BLEND_OVERLAP_NV                            0x9281
+#define LOCAL_GL_BLEND_PREMULTIPLIED_SRC_NV                  0x9280
+#define LOCAL_GL_BLEND_SRC                                   0x0BE1
+#define LOCAL_GL_BLEND_SRC_ALPHA                             0x80CB
+#define LOCAL_GL_BLEND_SRC_ALPHA_EXT                         0x80CB
+#define LOCAL_GL_BLEND_SRC_ALPHA_OES                         0x80CB
+#define LOCAL_GL_BLEND_SRC_RGB                               0x80C9
+#define LOCAL_GL_BLEND_SRC_RGB_EXT                           0x80C9
+#define LOCAL_GL_BLEND_SRC_RGB_OES                           0x80C9
+#define LOCAL_GL_BLOCK_INDEX                                 0x92FD
+#define LOCAL_GL_BLUE                                        0x1905
+#define LOCAL_GL_BLUE_BIAS                                   0x0D1B
+#define LOCAL_GL_BLUE_BITS                                   0x0D54
+#define LOCAL_GL_BLUE_BIT_ATI                                0x00000004
+#define LOCAL_GL_BLUE_INTEGER                                0x8D96
+#define LOCAL_GL_BLUE_INTEGER_EXT                            0x8D96
+#define LOCAL_GL_BLUE_MAX_CLAMP_INGR                         0x8566
+#define LOCAL_GL_BLUE_MIN_CLAMP_INGR                         0x8562
+#define LOCAL_GL_BLUE_NV                                     0x1905
+#define LOCAL_GL_BLUE_SCALE                                  0x0D1A
+#define LOCAL_GL_BOLD_BIT_NV                                 0x01
+#define LOCAL_GL_BOOL                                        0x8B56
+#define LOCAL_GL_BOOL_ARB                                    0x8B56
+#define LOCAL_GL_BOOL_VEC2                                   0x8B57
+#define LOCAL_GL_BOOL_VEC2_ARB                               0x8B57
+#define LOCAL_GL_BOOL_VEC3                                   0x8B58
+#define LOCAL_GL_BOOL_VEC3_ARB                               0x8B58
+#define LOCAL_GL_BOOL_VEC4                                   0x8B59
+#define LOCAL_GL_BOOL_VEC4_ARB                               0x8B59
+#define LOCAL_GL_BOUNDING_BOX_NV                             0x908D
+#define LOCAL_GL_BOUNDING_BOX_OF_BOUNDING_BOXES_NV           0x909C
+#define LOCAL_GL_BROWSER_DEFAULT_WEBGL                       0x9244
+#define LOCAL_GL_BUFFER                                      0x82E0
+#define LOCAL_GL_BUFFER_ACCESS                               0x88BB
+#define LOCAL_GL_BUFFER_ACCESS_ARB                           0x88BB
+#define LOCAL_GL_BUFFER_ACCESS_FLAGS                         0x911F
+#define LOCAL_GL_BUFFER_ACCESS_OES                           0x88BB
+#define LOCAL_GL_BUFFER_BINDING                              0x9302
+#define LOCAL_GL_BUFFER_DATA_SIZE                            0x9303
+#define LOCAL_GL_BUFFER_FLUSHING_UNMAP_APPLE                 0x8A13
+#define LOCAL_GL_BUFFER_GPU_ADDRESS_NV                       0x8F1D
+#define LOCAL_GL_BUFFER_IMMUTABLE_STORAGE                    0x821F
+#define LOCAL_GL_BUFFER_IMMUTABLE_STORAGE_EXT                0x821F
+#define LOCAL_GL_BUFFER_KHR                                  0x82E0
+#define LOCAL_GL_BUFFER_MAPPED                               0x88BC
+#define LOCAL_GL_BUFFER_MAPPED_ARB                           0x88BC
+#define LOCAL_GL_BUFFER_MAPPED_OES                           0x88BC
+#define LOCAL_GL_BUFFER_MAP_LENGTH                           0x9120
+#define LOCAL_GL_BUFFER_MAP_OFFSET                           0x9121
+#define LOCAL_GL_BUFFER_MAP_POINTER                          0x88BD
+#define LOCAL_GL_BUFFER_MAP_POINTER_ARB                      0x88BD
+#define LOCAL_GL_BUFFER_MAP_POINTER_OES                      0x88BD
+#define LOCAL_GL_BUFFER_OBJECT_APPLE                         0x85B3
+#define LOCAL_GL_BUFFER_OBJECT_EXT                           0x9151
+#define LOCAL_GL_BUFFER_SERIALIZED_MODIFY_APPLE              0x8A12
+#define LOCAL_GL_BUFFER_SIZE                                 0x8764
+#define LOCAL_GL_BUFFER_SIZE_ARB                             0x8764
+#define LOCAL_GL_BUFFER_STORAGE_FLAGS                        0x8220
+#define LOCAL_GL_BUFFER_STORAGE_FLAGS_EXT                    0x8220
+#define LOCAL_GL_BUFFER_UPDATE_BARRIER_BIT                   0x00000200
+#define LOCAL_GL_BUFFER_UPDATE_BARRIER_BIT_EXT               0x00000200
+#define LOCAL_GL_BUFFER_USAGE                                0x8765
+#define LOCAL_GL_BUFFER_USAGE_ARB                            0x8765
+#define LOCAL_GL_BUFFER_VARIABLE                             0x92E5
+#define LOCAL_GL_BUMP_ENVMAP_ATI                             0x877B
+#define LOCAL_GL_BUMP_NUM_TEX_UNITS_ATI                      0x8777
+#define LOCAL_GL_BUMP_ROT_MATRIX_ATI                         0x8775
+#define LOCAL_GL_BUMP_ROT_MATRIX_SIZE_ATI                    0x8776
+#define LOCAL_GL_BUMP_TARGET_ATI                             0x877C
+#define LOCAL_GL_BUMP_TEX_UNITS_ATI                          0x8778
+#define LOCAL_GL_BYTE                                        0x1400
+#define LOCAL_GL_C3F_V3F                                     0x2A24
+#define LOCAL_GL_C4F_N3F_V3F                                 0x2A26
+#define LOCAL_GL_C4UB_V2F                                    0x2A22
+#define LOCAL_GL_C4UB_V3F                                    0x2A23
+#define LOCAL_GL_CALLIGRAPHIC_FRAGMENT_SGIX                  0x8183
+#define LOCAL_GL_CAVEAT_SUPPORT                              0x82B8
+#define LOCAL_GL_CCW                                         0x0901
+#define LOCAL_GL_CIRCULAR_CCW_ARC_TO_NV                      0xF8
+#define LOCAL_GL_CIRCULAR_CW_ARC_TO_NV                       0xFA
+#define LOCAL_GL_CIRCULAR_TANGENT_ARC_TO_NV                  0xFC
+#define LOCAL_GL_CLAMP                                       0x2900
+#define LOCAL_GL_CLAMP_FRAGMENT_COLOR                        0x891B
+#define LOCAL_GL_CLAMP_FRAGMENT_COLOR_ARB                    0x891B
+#define LOCAL_GL_CLAMP_READ_COLOR                            0x891C
+#define LOCAL_GL_CLAMP_READ_COLOR_ARB                        0x891C
+#define LOCAL_GL_CLAMP_TO_BORDER                             0x812D
+#define LOCAL_GL_CLAMP_TO_BORDER_ARB                         0x812D
+#define LOCAL_GL_CLAMP_TO_BORDER_EXT                         0x812D
+#define LOCAL_GL_CLAMP_TO_BORDER_NV                          0x812D
+#define LOCAL_GL_CLAMP_TO_BORDER_OES                         0x812D
+#define LOCAL_GL_CLAMP_TO_BORDER_SGIS                        0x812D
+#define LOCAL_GL_CLAMP_TO_EDGE                               0x812F
+#define LOCAL_GL_CLAMP_TO_EDGE_SGIS                          0x812F
+#define LOCAL_GL_CLAMP_VERTEX_COLOR                          0x891A
+#define LOCAL_GL_CLAMP_VERTEX_COLOR_ARB                      0x891A
+#define LOCAL_GL_CLEAR                                       0x1500
+#define LOCAL_GL_CLEAR_BUFFER                                0x82B4
+#define LOCAL_GL_CLEAR_TEXTURE                               0x9365
+#define LOCAL_GL_CLIENT_ACTIVE_TEXTURE                       0x84E1
+#define LOCAL_GL_CLIENT_ACTIVE_TEXTURE_ARB                   0x84E1
+#define LOCAL_GL_CLIENT_ALL_ATTRIB_BITS                      0xFFFFFFFF
+#define LOCAL_GL_CLIENT_ATTRIB_STACK_DEPTH                   0x0BB1
+#define LOCAL_GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT            0x00004000
+#define LOCAL_GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT_EXT        0x00004000
+#define LOCAL_GL_CLIENT_PIXEL_STORE_BIT                      0x00000001
+#define LOCAL_GL_CLIENT_STORAGE_BIT                          0x0200
+#define LOCAL_GL_CLIENT_STORAGE_BIT_EXT                      0x0200
+#define LOCAL_GL_CLIENT_VERTEX_ARRAY_BIT                     0x00000002
+#define LOCAL_GL_CLIPPING_INPUT_PRIMITIVES                   0x82F6
+#define LOCAL_GL_CLIPPING_INPUT_PRIMITIVES_ARB               0x82F6
+#define LOCAL_GL_CLIPPING_OUTPUT_PRIMITIVES                  0x82F7
+#define LOCAL_GL_CLIPPING_OUTPUT_PRIMITIVES_ARB              0x82F7
+#define LOCAL_GL_CLIP_DEPTH_MODE                             0x935D
+#define LOCAL_GL_CLIP_DEPTH_MODE_EXT                         0x935D
+#define LOCAL_GL_CLIP_DISTANCE0                              0x3000
+#define LOCAL_GL_CLIP_DISTANCE0_APPLE                        0x3000
+#define LOCAL_GL_CLIP_DISTANCE0_EXT                          0x3000
+#define LOCAL_GL_CLIP_DISTANCE1                              0x3001
+#define LOCAL_GL_CLIP_DISTANCE1_APPLE                        0x3001
+#define LOCAL_GL_CLIP_DISTANCE1_EXT                          0x3001
+#define LOCAL_GL_CLIP_DISTANCE2                              0x3002
+#define LOCAL_GL_CLIP_DISTANCE2_APPLE                        0x3002
+#define LOCAL_GL_CLIP_DISTANCE2_EXT                          0x3002
+#define LOCAL_GL_CLIP_DISTANCE3                              0x3003
+#define LOCAL_GL_CLIP_DISTANCE3_APPLE                        0x3003
+#define LOCAL_GL_CLIP_DISTANCE3_EXT                          0x3003
+#define LOCAL_GL_CLIP_DISTANCE4                              0x3004
+#define LOCAL_GL_CLIP_DISTANCE4_APPLE                        0x3004
+#define LOCAL_GL_CLIP_DISTANCE4_EXT                          0x3004
+#define LOCAL_GL_CLIP_DISTANCE5                              0x3005
+#define LOCAL_GL_CLIP_DISTANCE5_APPLE                        0x3005
+#define LOCAL_GL_CLIP_DISTANCE5_EXT                          0x3005
+#define LOCAL_GL_CLIP_DISTANCE6                              0x3006
+#define LOCAL_GL_CLIP_DISTANCE6_APPLE                        0x3006
+#define LOCAL_GL_CLIP_DISTANCE6_EXT                          0x3006
+#define LOCAL_GL_CLIP_DISTANCE7                              0x3007
+#define LOCAL_GL_CLIP_DISTANCE7_APPLE                        0x3007
+#define LOCAL_GL_CLIP_DISTANCE7_EXT                          0x3007
+#define LOCAL_GL_CLIP_DISTANCE_NV                            0x8C7A
+#define LOCAL_GL_CLIP_FAR_HINT_PGI                           0x1A221
+#define LOCAL_GL_CLIP_NEAR_HINT_PGI                          0x1A220
+#define LOCAL_GL_CLIP_ORIGIN                                 0x935C
+#define LOCAL_GL_CLIP_ORIGIN_EXT                             0x935C
+#define LOCAL_GL_CLIP_PLANE0                                 0x3000
+#define LOCAL_GL_CLIP_PLANE0_IMG                             0x3000
+#define LOCAL_GL_CLIP_PLANE1                                 0x3001
+#define LOCAL_GL_CLIP_PLANE1_IMG                             0x3001
+#define LOCAL_GL_CLIP_PLANE2                                 0x3002
+#define LOCAL_GL_CLIP_PLANE2_IMG                             0x3002
+#define LOCAL_GL_CLIP_PLANE3                                 0x3003
+#define LOCAL_GL_CLIP_PLANE3_IMG                             0x3003
+#define LOCAL_GL_CLIP_PLANE4                                 0x3004
+#define LOCAL_GL_CLIP_PLANE4_IMG                             0x3004
+#define LOCAL_GL_CLIP_PLANE5                                 0x3005
+#define LOCAL_GL_CLIP_PLANE5_IMG                             0x3005
+#define LOCAL_GL_CLIP_VOLUME_CLIPPING_HINT_EXT               0x80F0
+#define LOCAL_GL_CLOSE_PATH_NV                               0x00
+#define LOCAL_GL_CMYKA_EXT                                   0x800D
+#define LOCAL_GL_CMYK_EXT                                    0x800C
+#define LOCAL_GL_CND0_ATI                                    0x896B
+#define LOCAL_GL_CND_ATI                                     0x896A
+#define LOCAL_GL_COEFF                                       0x0A00
+#define LOCAL_GL_COLOR                                       0x1800
+#define LOCAL_GL_COLOR3_BIT_PGI                              0x00010000
+#define LOCAL_GL_COLOR4_BIT_PGI                              0x00020000
+#define LOCAL_GL_COLORBURN                                   0x929A
+#define LOCAL_GL_COLORBURN_KHR                               0x929A
+#define LOCAL_GL_COLORBURN_NV                                0x929A
+#define LOCAL_GL_COLORDODGE                                  0x9299
+#define LOCAL_GL_COLORDODGE_KHR                              0x9299
+#define LOCAL_GL_COLORDODGE_NV                               0x9299
+#define LOCAL_GL_COLOR_ALPHA_PAIRING_ATI                     0x8975
+#define LOCAL_GL_COLOR_ARRAY                                 0x8076
+#define LOCAL_GL_COLOR_ARRAY_ADDRESS_NV                      0x8F23
+#define LOCAL_GL_COLOR_ARRAY_BUFFER_BINDING                  0x8898
+#define LOCAL_GL_COLOR_ARRAY_BUFFER_BINDING_ARB              0x8898
+#define LOCAL_GL_COLOR_ARRAY_COUNT_EXT                       0x8084
+#define LOCAL_GL_COLOR_ARRAY_EXT                             0x8076
+#define LOCAL_GL_COLOR_ARRAY_LENGTH_NV                       0x8F2D
+#define LOCAL_GL_COLOR_ARRAY_LIST_IBM                        103072
+#define LOCAL_GL_COLOR_ARRAY_LIST_STRIDE_IBM                 103082
+#define LOCAL_GL_COLOR_ARRAY_PARALLEL_POINTERS_INTEL         0x83F7
+#define LOCAL_GL_COLOR_ARRAY_POINTER                         0x8090
+#define LOCAL_GL_COLOR_ARRAY_POINTER_EXT                     0x8090
+#define LOCAL_GL_COLOR_ARRAY_SIZE                            0x8081
+#define LOCAL_GL_COLOR_ARRAY_SIZE_EXT                        0x8081
+#define LOCAL_GL_COLOR_ARRAY_STRIDE                          0x8083
+#define LOCAL_GL_COLOR_ARRAY_STRIDE_EXT                      0x8083
+#define LOCAL_GL_COLOR_ARRAY_TYPE                            0x8082
+#define LOCAL_GL_COLOR_ARRAY_TYPE_EXT                        0x8082
+#define LOCAL_GL_COLOR_ATTACHMENT0                           0x8CE0
+#define LOCAL_GL_COLOR_ATTACHMENT0_EXT                       0x8CE0
+#define LOCAL_GL_COLOR_ATTACHMENT0_NV                        0x8CE0
+#define LOCAL_GL_COLOR_ATTACHMENT0_OES                       0x8CE0
+#define LOCAL_GL_COLOR_ATTACHMENT1                           0x8CE1
+#define LOCAL_GL_COLOR_ATTACHMENT10                          0x8CEA
+#define LOCAL_GL_COLOR_ATTACHMENT10_EXT                      0x8CEA
+#define LOCAL_GL_COLOR_ATTACHMENT10_NV                       0x8CEA
+#define LOCAL_GL_COLOR_ATTACHMENT11                          0x8CEB
+#define LOCAL_GL_COLOR_ATTACHMENT11_EXT                      0x8CEB
+#define LOCAL_GL_COLOR_ATTACHMENT11_NV                       0x8CEB
+#define LOCAL_GL_COLOR_ATTACHMENT12                          0x8CEC
+#define LOCAL_GL_COLOR_ATTACHMENT12_EXT                      0x8CEC
+#define LOCAL_GL_COLOR_ATTACHMENT12_NV                       0x8CEC
+#define LOCAL_GL_COLOR_ATTACHMENT13                          0x8CED
+#define LOCAL_GL_COLOR_ATTACHMENT13_EXT                      0x8CED
+#define LOCAL_GL_COLOR_ATTACHMENT13_NV                       0x8CED
+#define LOCAL_GL_COLOR_ATTACHMENT14                          0x8CEE
+#define LOCAL_GL_COLOR_ATTACHMENT14_EXT                      0x8CEE
+#define LOCAL_GL_COLOR_ATTACHMENT14_NV                       0x8CEE
+#define LOCAL_GL_COLOR_ATTACHMENT15                          0x8CEF
+#define LOCAL_GL_COLOR_ATTACHMENT15_EXT                      0x8CEF
+#define LOCAL_GL_COLOR_ATTACHMENT15_NV                       0x8CEF
+#define LOCAL_GL_COLOR_ATTACHMENT16                          0x8CF0
+#define LOCAL_GL_COLOR_ATTACHMENT17                          0x8CF1
+#define LOCAL_GL_COLOR_ATTACHMENT18                          0x8CF2
+#define LOCAL_GL_COLOR_ATTACHMENT19                          0x8CF3
+#define LOCAL_GL_COLOR_ATTACHMENT1_EXT                       0x8CE1
+#define LOCAL_GL_COLOR_ATTACHMENT1_NV                        0x8CE1
+#define LOCAL_GL_COLOR_ATTACHMENT2                           0x8CE2
+#define LOCAL_GL_COLOR_ATTACHMENT20                          0x8CF4
+#define LOCAL_GL_COLOR_ATTACHMENT21                          0x8CF5
+#define LOCAL_GL_COLOR_ATTACHMENT22                          0x8CF6
+#define LOCAL_GL_COLOR_ATTACHMENT23                          0x8CF7
+#define LOCAL_GL_COLOR_ATTACHMENT24                          0x8CF8
+#define LOCAL_GL_COLOR_ATTACHMENT25                          0x8CF9
+#define LOCAL_GL_COLOR_ATTACHMENT26                          0x8CFA
+#define LOCAL_GL_COLOR_ATTACHMENT27                          0x8CFB
+#define LOCAL_GL_COLOR_ATTACHMENT28                          0x8CFC
+#define LOCAL_GL_COLOR_ATTACHMENT29                          0x8CFD
+#define LOCAL_GL_COLOR_ATTACHMENT2_EXT                       0x8CE2
+#define LOCAL_GL_COLOR_ATTACHMENT2_NV                        0x8CE2
+#define LOCAL_GL_COLOR_ATTACHMENT3                           0x8CE3
+#define LOCAL_GL_COLOR_ATTACHMENT30                          0x8CFE
+#define LOCAL_GL_COLOR_ATTACHMENT31                          0x8CFF
+#define LOCAL_GL_COLOR_ATTACHMENT3_EXT                       0x8CE3
+#define LOCAL_GL_COLOR_ATTACHMENT3_NV                        0x8CE3
+#define LOCAL_GL_COLOR_ATTACHMENT4                           0x8CE4
+#define LOCAL_GL_COLOR_ATTACHMENT4_EXT                       0x8CE4
+#define LOCAL_GL_COLOR_ATTACHMENT4_NV                        0x8CE4
+#define LOCAL_GL_COLOR_ATTACHMENT5                           0x8CE5
+#define LOCAL_GL_COLOR_ATTACHMENT5_EXT                       0x8CE5
+#define LOCAL_GL_COLOR_ATTACHMENT5_NV                        0x8CE5
+#define LOCAL_GL_COLOR_ATTACHMENT6                           0x8CE6
+#define LOCAL_GL_COLOR_ATTACHMENT6_EXT                       0x8CE6
+#define LOCAL_GL_COLOR_ATTACHMENT6_NV                        0x8CE6
+#define LOCAL_GL_COLOR_ATTACHMENT7                           0x8CE7
+#define LOCAL_GL_COLOR_ATTACHMENT7_EXT                       0x8CE7
+#define LOCAL_GL_COLOR_ATTACHMENT7_NV                        0x8CE7
+#define LOCAL_GL_COLOR_ATTACHMENT8                           0x8CE8
+#define LOCAL_GL_COLOR_ATTACHMENT8_EXT                       0x8CE8
+#define LOCAL_GL_COLOR_ATTACHMENT8_NV                        0x8CE8
+#define LOCAL_GL_COLOR_ATTACHMENT9                           0x8CE9
+#define LOCAL_GL_COLOR_ATTACHMENT9_EXT                       0x8CE9
+#define LOCAL_GL_COLOR_ATTACHMENT9_NV                        0x8CE9
+#define LOCAL_GL_COLOR_ATTACHMENT_EXT                        0x90F0
+#define LOCAL_GL_COLOR_BUFFER_BIT                            0x00004000
+#define LOCAL_GL_COLOR_BUFFER_BIT0_QCOM                      0x00000001
+#define LOCAL_GL_COLOR_BUFFER_BIT1_QCOM                      0x00000002
+#define LOCAL_GL_COLOR_BUFFER_BIT2_QCOM                      0x00000004
+#define LOCAL_GL_COLOR_BUFFER_BIT3_QCOM                      0x00000008
+#define LOCAL_GL_COLOR_BUFFER_BIT4_QCOM                      0x00000010
+#define LOCAL_GL_COLOR_BUFFER_BIT5_QCOM                      0x00000020
+#define LOCAL_GL_COLOR_BUFFER_BIT6_QCOM                      0x00000040
+#define LOCAL_GL_COLOR_BUFFER_BIT7_QCOM                      0x00000080
+#define LOCAL_GL_COLOR_CLEAR_UNCLAMPED_VALUE_ATI             0x8835
+#define LOCAL_GL_COLOR_CLEAR_VALUE                           0x0C22
+#define LOCAL_GL_COLOR_COMPONENTS                            0x8283
+#define LOCAL_GL_COLOR_ENCODING                              0x8296
+#define LOCAL_GL_COLOR_EXT                                   0x1800
+#define LOCAL_GL_COLOR_FLOAT_APPLE                           0x8A0F
+#define LOCAL_GL_COLOR_INDEX                                 0x1900
+#define LOCAL_GL_COLOR_INDEX12_EXT                           0x80E6
+#define LOCAL_GL_COLOR_INDEX16_EXT                           0x80E7
+#define LOCAL_GL_COLOR_INDEX1_EXT                            0x80E2
+#define LOCAL_GL_COLOR_INDEX2_EXT                            0x80E3
+#define LOCAL_GL_COLOR_INDEX4_EXT                            0x80E4
+#define LOCAL_GL_COLOR_INDEX8_EXT                            0x80E5
+#define LOCAL_GL_COLOR_INDEXES                               0x1603
+#define LOCAL_GL_COLOR_LOGIC_OP                              0x0BF2
+#define LOCAL_GL_COLOR_MATERIAL                              0x0B57
+#define LOCAL_GL_COLOR_MATERIAL_FACE                         0x0B55
+#define LOCAL_GL_COLOR_MATERIAL_PARAMETER                    0x0B56
+#define LOCAL_GL_COLOR_MATRIX                                0x80B1
+#define LOCAL_GL_COLOR_MATRIX_SGI                            0x80B1
+#define LOCAL_GL_COLOR_MATRIX_STACK_DEPTH                    0x80B2
+#define LOCAL_GL_COLOR_MATRIX_STACK_DEPTH_SGI                0x80B2
+#define LOCAL_GL_COLOR_RENDERABLE                            0x8286
+#define LOCAL_GL_COLOR_SAMPLES_NV                            0x8E20
+#define LOCAL_GL_COLOR_SUM                                   0x8458
+#define LOCAL_GL_COLOR_SUM_ARB                               0x8458
+#define LOCAL_GL_COLOR_SUM_CLAMP_NV                          0x854F
+#define LOCAL_GL_COLOR_SUM_EXT                               0x8458
+#define LOCAL_GL_COLOR_TABLE                                 0x80D0
+#define LOCAL_GL_COLOR_TABLE_ALPHA_SIZE                      0x80DD
+#define LOCAL_GL_COLOR_TABLE_ALPHA_SIZE_SGI                  0x80DD
+#define LOCAL_GL_COLOR_TABLE_BIAS                            0x80D7
+#define LOCAL_GL_COLOR_TABLE_BIAS_SGI                        0x80D7
+#define LOCAL_GL_COLOR_TABLE_BLUE_SIZE                       0x80DC
+#define LOCAL_GL_COLOR_TABLE_BLUE_SIZE_SGI                   0x80DC
+#define LOCAL_GL_COLOR_TABLE_FORMAT                          0x80D8
+#define LOCAL_GL_COLOR_TABLE_FORMAT_SGI                      0x80D8
+#define LOCAL_GL_COLOR_TABLE_GREEN_SIZE                      0x80DB
+#define LOCAL_GL_COLOR_TABLE_GREEN_SIZE_SGI                  0x80DB
+#define LOCAL_GL_COLOR_TABLE_INTENSITY_SIZE                  0x80DF
+#define LOCAL_GL_COLOR_TABLE_INTENSITY_SIZE_SGI              0x80DF
+#define LOCAL_GL_COLOR_TABLE_LUMINANCE_SIZE                  0x80DE
+#define LOCAL_GL_COLOR_TABLE_LUMINANCE_SIZE_SGI              0x80DE
+#define LOCAL_GL_COLOR_TABLE_RED_SIZE                        0x80DA
+#define LOCAL_GL_COLOR_TABLE_RED_SIZE_SGI                    0x80DA
+#define LOCAL_GL_COLOR_TABLE_SCALE                           0x80D6
+#define LOCAL_GL_COLOR_TABLE_SCALE_SGI                       0x80D6
+#define LOCAL_GL_COLOR_TABLE_SGI                             0x80D0
+#define LOCAL_GL_COLOR_TABLE_WIDTH                           0x80D9
+#define LOCAL_GL_COLOR_TABLE_WIDTH_SGI                       0x80D9
+#define LOCAL_GL_COLOR_WRITEMASK                             0x0C23
+#define LOCAL_GL_COMBINE                                     0x8570
+#define LOCAL_GL_COMBINE4_NV                                 0x8503
+#define LOCAL_GL_COMBINER0_NV                                0x8550
+#define LOCAL_GL_COMBINER1_NV                                0x8551
+#define LOCAL_GL_COMBINER2_NV                                0x8552
+#define LOCAL_GL_COMBINER3_NV                                0x8553
+#define LOCAL_GL_COMBINER4_NV                                0x8554
+#define LOCAL_GL_COMBINER5_NV                                0x8555
+#define LOCAL_GL_COMBINER6_NV                                0x8556
+#define LOCAL_GL_COMBINER7_NV                                0x8557
+#define LOCAL_GL_COMBINER_AB_DOT_PRODUCT_NV                  0x8545
+#define LOCAL_GL_COMBINER_AB_OUTPUT_NV                       0x854A
+#define LOCAL_GL_COMBINER_BIAS_NV                            0x8549
+#define LOCAL_GL_COMBINER_CD_DOT_PRODUCT_NV                  0x8546
+#define LOCAL_GL_COMBINER_CD_OUTPUT_NV                       0x854B
+#define LOCAL_GL_COMBINER_COMPONENT_USAGE_NV                 0x8544
+#define LOCAL_GL_COMBINER_INPUT_NV                           0x8542
+#define LOCAL_GL_COMBINER_MAPPING_NV                         0x8543
+#define LOCAL_GL_COMBINER_MUX_SUM_NV                         0x8547
+#define LOCAL_GL_COMBINER_SCALE_NV                           0x8548
+#define LOCAL_GL_COMBINER_SUM_OUTPUT_NV                      0x854C
+#define LOCAL_GL_COMBINE_ALPHA                               0x8572
+#define LOCAL_GL_COMBINE_ALPHA_ARB                           0x8572
+#define LOCAL_GL_COMBINE_ALPHA_EXT                           0x8572
+#define LOCAL_GL_COMBINE_ARB                                 0x8570
+#define LOCAL_GL_COMBINE_EXT                                 0x8570
+#define LOCAL_GL_COMBINE_RGB                                 0x8571
+#define LOCAL_GL_COMBINE_RGB_ARB                             0x8571
+#define LOCAL_GL_COMBINE_RGB_EXT                             0x8571
+#define LOCAL_GL_COMMAND_BARRIER_BIT                         0x00000040
+#define LOCAL_GL_COMMAND_BARRIER_BIT_EXT                     0x00000040
+#define LOCAL_GL_COMPARE_REF_DEPTH_TO_TEXTURE_EXT            0x884E
+#define LOCAL_GL_COMPARE_REF_TO_TEXTURE                      0x884E
+#define LOCAL_GL_COMPARE_REF_TO_TEXTURE_EXT                  0x884E
+#define LOCAL_GL_COMPARE_R_TO_TEXTURE                        0x884E
+#define LOCAL_GL_COMPARE_R_TO_TEXTURE_ARB                    0x884E
+#define LOCAL_GL_COMPATIBLE_SUBROUTINES                      0x8E4B
+#define LOCAL_GL_COMPILE                                     0x1300
+#define LOCAL_GL_COMPILE_AND_EXECUTE                         0x1301
+#define LOCAL_GL_COMPILE_STATUS                              0x8B81
+#define LOCAL_GL_COMPLETION_STATUS_ARB                       0x91B1
+#define LOCAL_GL_COMPLETION_STATUS_KHR                       0x91B1
+#define LOCAL_GL_COMPRESSED_ALPHA                            0x84E9
+#define LOCAL_GL_COMPRESSED_ALPHA_ARB                        0x84E9
+#define LOCAL_GL_COMPRESSED_INTENSITY                        0x84EC
+#define LOCAL_GL_COMPRESSED_INTENSITY_ARB                    0x84EC
+#define LOCAL_GL_COMPRESSED_LUMINANCE                        0x84EA
+#define LOCAL_GL_COMPRESSED_LUMINANCE_ALPHA                  0x84EB
+#define LOCAL_GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI          0x8837
+#define LOCAL_GL_COMPRESSED_LUMINANCE_ALPHA_ARB              0x84EB
+#define LOCAL_GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT        0x8C72
+#define LOCAL_GL_COMPRESSED_LUMINANCE_ARB                    0x84EA
+#define LOCAL_GL_COMPRESSED_LUMINANCE_LATC1_EXT              0x8C70
+#define LOCAL_GL_COMPRESSED_R11_EAC                          0x9270
+#define LOCAL_GL_COMPRESSED_R11_EAC_OES                      0x9270
+#define LOCAL_GL_COMPRESSED_RED                              0x8225
+#define LOCAL_GL_COMPRESSED_RED_GREEN_RGTC2_EXT              0x8DBD
+#define LOCAL_GL_COMPRESSED_RED_RGTC1                        0x8DBB
+#define LOCAL_GL_COMPRESSED_RED_RGTC1_EXT                    0x8DBB
+#define LOCAL_GL_COMPRESSED_RG                               0x8226
+#define LOCAL_GL_COMPRESSED_RG11_EAC                         0x9272
+#define LOCAL_GL_COMPRESSED_RG11_EAC_OES                     0x9272
+#define LOCAL_GL_COMPRESSED_RGB                              0x84ED
+#define LOCAL_GL_COMPRESSED_RGB8_ETC2                        0x9274
+#define LOCAL_GL_COMPRESSED_RGB8_ETC2_OES                    0x9274
+#define LOCAL_GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2    0x9276
+#define LOCAL_GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2_OES        0x9276
+#define LOCAL_GL_COMPRESSED_RGBA                             0x84EE
+#define LOCAL_GL_COMPRESSED_RGBA8_ETC2_EAC                   0x9278
+#define LOCAL_GL_COMPRESSED_RGBA8_ETC2_EAC_OES               0x9278
+#define LOCAL_GL_COMPRESSED_RGBA_ARB                         0x84EE
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_10x10                  0x93BB
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_10x10_KHR              0x93BB
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_10x5                   0x93B8
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_10x5_KHR               0x93B8
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_10x6                   0x93B9
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_10x6_KHR               0x93B9
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_10x8                   0x93BA
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_10x8_KHR               0x93BA
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_12x10                  0x93BC
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_12x10_KHR              0x93BC
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_12x12                  0x93BD
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_12x12_KHR              0x93BD
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_3x3x3_OES              0x93C0
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_4x3x3_OES              0x93C1
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_4x4                    0x93B0
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_4x4_KHR                0x93B0
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_4x4x3_OES              0x93C2
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_4x4x4_OES              0x93C3
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_5x4                    0x93B1
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_5x4_KHR                0x93B1
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_5x4x4_OES              0x93C4
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_5x5                    0x93B2
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_5x5_KHR                0x93B2
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_5x5x4_OES              0x93C5
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_5x5x5_OES              0x93C6
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_6x5                    0x93B3
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_6x5_KHR                0x93B3
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_6x5x5_OES              0x93C7
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_6x6                    0x93B4
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_6x6_KHR                0x93B4
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_6x6x5_OES              0x93C8
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_6x6x6_OES              0x93C9
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_8x5                    0x93B5
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_8x5_KHR                0x93B5
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_8x6                    0x93B6
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_8x6_KHR                0x93B6
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_8x8                    0x93B7
+#define LOCAL_GL_COMPRESSED_RGBA_ASTC_8x8_KHR                0x93B7
+#define LOCAL_GL_COMPRESSED_RGBA_BPTC_UNORM                  0x8E8C
+#define LOCAL_GL_COMPRESSED_RGBA_BPTC_UNORM_ARB              0x8E8C
+#define LOCAL_GL_COMPRESSED_RGBA_BPTC_UNORM_EXT              0x8E8C
+#define LOCAL_GL_COMPRESSED_RGBA_FXT1_3DFX                   0x86B1
+#define LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG            0x8C03
+#define LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG            0x9137
+#define LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG            0x8C02
+#define LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG            0x9138
+#define LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT               0x83F1
+#define LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE             0x83F2
+#define LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT               0x83F2
+#define LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE             0x83F3
+#define LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT               0x83F3
+#define LOCAL_GL_COMPRESSED_RGB_ARB                          0x84ED
+#define LOCAL_GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT            0x8E8E
+#define LOCAL_GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB        0x8E8E
+#define LOCAL_GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT        0x8E8E
+#define LOCAL_GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT          0x8E8F
+#define LOCAL_GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB      0x8E8F
+#define LOCAL_GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT      0x8E8F
+#define LOCAL_GL_COMPRESSED_RGB_FXT1_3DFX                    0x86B0
+#define LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG             0x8C01
+#define LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG             0x8C00
+#define LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT                0x83F0
+#define LOCAL_GL_COMPRESSED_RG_RGTC2                         0x8DBD
+#define LOCAL_GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT 0x8C73
+#define LOCAL_GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT       0x8C71
+#define LOCAL_GL_COMPRESSED_SIGNED_R11_EAC                   0x9271
+#define LOCAL_GL_COMPRESSED_SIGNED_R11_EAC_OES               0x9271
+#define LOCAL_GL_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT       0x8DBE
+#define LOCAL_GL_COMPRESSED_SIGNED_RED_RGTC1                 0x8DBC
+#define LOCAL_GL_COMPRESSED_SIGNED_RED_RGTC1_EXT             0x8DBC
+#define LOCAL_GL_COMPRESSED_SIGNED_RG11_EAC                  0x9273
+#define LOCAL_GL_COMPRESSED_SIGNED_RG11_EAC_OES              0x9273
+#define LOCAL_GL_COMPRESSED_SIGNED_RG_RGTC2                  0x8DBE
+#define LOCAL_GL_COMPRESSED_SLUMINANCE                       0x8C4A
+#define LOCAL_GL_COMPRESSED_SLUMINANCE_ALPHA                 0x8C4B
+#define LOCAL_GL_COMPRESSED_SLUMINANCE_ALPHA_EXT             0x8C4B
+#define LOCAL_GL_COMPRESSED_SLUMINANCE_EXT                   0x8C4A
+#define LOCAL_GL_COMPRESSED_SRGB                             0x8C48
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10          0x93DB
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR      0x93DB
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5           0x93D8
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR       0x93D8
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6           0x93D9
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR       0x93D9
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8           0x93DA
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR       0x93DA
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10          0x93DC
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR      0x93DC
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12          0x93DD
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR      0x93DD
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_3x3x3_OES      0x93E0
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x3x3_OES      0x93E1
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4            0x93D0
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR        0x93D0
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x3_OES      0x93E2
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4x4_OES      0x93E3
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4            0x93D1
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR        0x93D1
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4x4_OES      0x93E4
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5            0x93D2
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR        0x93D2
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x4_OES      0x93E5
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5x5_OES      0x93E6
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5            0x93D3
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR        0x93D3
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5x5_OES      0x93E7
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6            0x93D4
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR        0x93D4
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x5_OES      0x93E8
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6x6_OES      0x93E9
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5            0x93D5
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR        0x93D5
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6            0x93D6
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR        0x93D6
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8            0x93D7
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR        0x93D7
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC            0x9279
+#define LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC_OES        0x9279
+#define LOCAL_GL_COMPRESSED_SRGB8_ETC2                       0x9275
+#define LOCAL_GL_COMPRESSED_SRGB8_ETC2_OES                   0x9275
+#define LOCAL_GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2   0x9277
+#define LOCAL_GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2_OES       0x9277
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA                       0x8C49
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM            0x8E8D
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB        0x8E8D
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT        0x8E8D
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_EXT                   0x8C49
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV1_EXT      0x8A56
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_PVRTC_2BPPV2_IMG      0x93F0
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV1_EXT      0x8A57
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_PVRTC_4BPPV2_IMG      0x93F1
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT         0x8C4D
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_NV          0x8C4D
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT         0x8C4E
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_NV          0x8C4E
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT         0x8C4F
+#define LOCAL_GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_NV          0x8C4F
+#define LOCAL_GL_COMPRESSED_SRGB_EXT                         0x8C48
+#define LOCAL_GL_COMPRESSED_SRGB_PVRTC_2BPPV1_EXT            0x8A54
+#define LOCAL_GL_COMPRESSED_SRGB_PVRTC_4BPPV1_EXT            0x8A55
+#define LOCAL_GL_COMPRESSED_SRGB_S3TC_DXT1_EXT               0x8C4C
+#define LOCAL_GL_COMPRESSED_SRGB_S3TC_DXT1_NV                0x8C4C
+#define LOCAL_GL_COMPRESSED_TEXTURE_FORMATS                  0x86A3
+#define LOCAL_GL_COMPRESSED_TEXTURE_FORMATS_ARB              0x86A3
+#define LOCAL_GL_COMPUTE_PROGRAM_NV                          0x90FB
+#define LOCAL_GL_COMPUTE_PROGRAM_PARAMETER_BUFFER_NV         0x90FC
+#define LOCAL_GL_COMPUTE_SHADER                              0x91B9
+#define LOCAL_GL_COMPUTE_SHADER_BIT                          0x00000020
+#define LOCAL_GL_COMPUTE_SHADER_INVOCATIONS                  0x82F5
+#define LOCAL_GL_COMPUTE_SHADER_INVOCATIONS_ARB              0x82F5
+#define LOCAL_GL_COMPUTE_SUBROUTINE                          0x92ED
+#define LOCAL_GL_COMPUTE_SUBROUTINE_UNIFORM                  0x92F3
+#define LOCAL_GL_COMPUTE_TEXTURE                             0x82A0
+#define LOCAL_GL_COMPUTE_WORK_GROUP_SIZE                     0x8267
+#define LOCAL_GL_COMP_BIT_ATI                                0x00000002
+#define LOCAL_GL_CONDITION_SATISFIED                         0x911C
+#define LOCAL_GL_CONDITION_SATISFIED_APPLE                   0x911C
+#define LOCAL_GL_CONFORMANT_NV                               0x9374
+#define LOCAL_GL_CONIC_CURVE_TO_NV                           0x1A
+#define LOCAL_GL_CONJOINT_NV                                 0x9284
+#define LOCAL_GL_CONSERVATIVE_RASTERIZATION_INTEL            0x83FE
+#define LOCAL_GL_CONSERVATIVE_RASTERIZATION_NV               0x9346
+#define LOCAL_GL_CONSERVATIVE_RASTER_DILATE_GRANULARITY_NV   0x937B
+#define LOCAL_GL_CONSERVATIVE_RASTER_DILATE_NV               0x9379
+#define LOCAL_GL_CONSERVATIVE_RASTER_DILATE_RANGE_NV         0x937A
+#define LOCAL_GL_CONSERVATIVE_RASTER_MODE_NV                 0x954D
+#define LOCAL_GL_CONSERVATIVE_RASTER_MODE_POST_SNAP_NV       0x954E
+#define LOCAL_GL_CONSERVATIVE_RASTER_MODE_PRE_SNAP_NV        0x9550
+#define LOCAL_GL_CONSERVATIVE_RASTER_MODE_PRE_SNAP_TRIANGLES_NV      0x954F
+#define LOCAL_GL_CONSERVE_MEMORY_HINT_PGI                    0x1A1FD
+#define LOCAL_GL_CONSTANT                                    0x8576
+#define LOCAL_GL_CONSTANT_ALPHA                              0x8003
+#define LOCAL_GL_CONSTANT_ALPHA_EXT                          0x8003
+#define LOCAL_GL_CONSTANT_ARB                                0x8576
+#define LOCAL_GL_CONSTANT_ATTENUATION                        0x1207
+#define LOCAL_GL_CONSTANT_BORDER                             0x8151
+#define LOCAL_GL_CONSTANT_BORDER_HP                          0x8151
+#define LOCAL_GL_CONSTANT_COLOR                              0x8001
+#define LOCAL_GL_CONSTANT_COLOR0_NV                          0x852A
+#define LOCAL_GL_CONSTANT_COLOR1_NV                          0x852B
+#define LOCAL_GL_CONSTANT_COLOR_EXT                          0x8001
+#define LOCAL_GL_CONSTANT_EXT                                0x8576
+#define LOCAL_GL_CONSTANT_NV                                 0x8576
+#define LOCAL_GL_CONST_EYE_NV                                0x86E5
+#define LOCAL_GL_CONTEXT_COMPATIBILITY_PROFILE_BIT           0x00000002
+#define LOCAL_GL_CONTEXT_CORE_PROFILE_BIT                    0x00000001
+#define LOCAL_GL_CONTEXT_FLAGS                               0x821E
+#define LOCAL_GL_CONTEXT_FLAG_DEBUG_BIT                      0x00000002
+#define LOCAL_GL_CONTEXT_FLAG_DEBUG_BIT_KHR                  0x00000002
+#define LOCAL_GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT         0x00000001
+#define LOCAL_GL_CONTEXT_FLAG_NO_ERROR_BIT                   0x00000008
+#define LOCAL_GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR               0x00000008
+#define LOCAL_GL_CONTEXT_FLAG_PROTECTED_CONTENT_BIT_EXT      0x00000010
+#define LOCAL_GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT              0x00000004
+#define LOCAL_GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB          0x00000004
+#define LOCAL_GL_CONTEXT_LOST                                0x0507
+#define LOCAL_GL_CONTEXT_LOST_KHR                            0x0507
+#define LOCAL_GL_CONTEXT_LOST_WEBGL                          0x9242
+#define LOCAL_GL_CONTEXT_PROFILE_MASK                        0x9126
+#define LOCAL_GL_CONTEXT_RELEASE_BEHAVIOR                    0x82FB
+#define LOCAL_GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH              0x82FC
+#define LOCAL_GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_KHR          0x82FC
+#define LOCAL_GL_CONTEXT_RELEASE_BEHAVIOR_KHR                0x82FB
+#define LOCAL_GL_CONTEXT_ROBUST_ACCESS                       0x90F3
+#define LOCAL_GL_CONTEXT_ROBUST_ACCESS_EXT                   0x90F3
+#define LOCAL_GL_CONTEXT_ROBUST_ACCESS_KHR                   0x90F3
+#define LOCAL_GL_CONTINUOUS_AMD                              0x9007
+#define LOCAL_GL_CONTRAST_NV                                 0x92A1
+#define LOCAL_GL_CONVEX_HULL_NV                              0x908B
+#define LOCAL_GL_CONVOLUTION_1D                              0x8010
+#define LOCAL_GL_CONVOLUTION_1D_EXT                          0x8010
+#define LOCAL_GL_CONVOLUTION_2D                              0x8011
+#define LOCAL_GL_CONVOLUTION_2D_EXT                          0x8011
+#define LOCAL_GL_CONVOLUTION_BORDER_COLOR                    0x8154
+#define LOCAL_GL_CONVOLUTION_BORDER_COLOR_HP                 0x8154
+#define LOCAL_GL_CONVOLUTION_BORDER_MODE                     0x8013
+#define LOCAL_GL_CONVOLUTION_BORDER_MODE_EXT                 0x8013
+#define LOCAL_GL_CONVOLUTION_FILTER_BIAS                     0x8015
+#define LOCAL_GL_CONVOLUTION_FILTER_BIAS_EXT                 0x8015
+#define LOCAL_GL_CONVOLUTION_FILTER_SCALE                    0x8014
+#define LOCAL_GL_CONVOLUTION_FILTER_SCALE_EXT                0x8014
+#define LOCAL_GL_CONVOLUTION_FORMAT                          0x8017
+#define LOCAL_GL_CONVOLUTION_FORMAT_EXT                      0x8017
+#define LOCAL_GL_CONVOLUTION_HEIGHT                          0x8019
+#define LOCAL_GL_CONVOLUTION_HEIGHT_EXT                      0x8019
+#define LOCAL_GL_CONVOLUTION_HINT_SGIX                       0x8316
+#define LOCAL_GL_CONVOLUTION_WIDTH                           0x8018
+#define LOCAL_GL_CONVOLUTION_WIDTH_EXT                       0x8018
+#define LOCAL_GL_CON_0_ATI                                   0x8941
+#define LOCAL_GL_CON_10_ATI                                  0x894B
+#define LOCAL_GL_CON_11_ATI                                  0x894C
+#define LOCAL_GL_CON_12_ATI                                  0x894D
+#define LOCAL_GL_CON_13_ATI                                  0x894E
+#define LOCAL_GL_CON_14_ATI                                  0x894F
+#define LOCAL_GL_CON_15_ATI                                  0x8950
+#define LOCAL_GL_CON_16_ATI                                  0x8951
+#define LOCAL_GL_CON_17_ATI                                  0x8952
+#define LOCAL_GL_CON_18_ATI                                  0x8953
+#define LOCAL_GL_CON_19_ATI                                  0x8954
+#define LOCAL_GL_CON_1_ATI                                   0x8942
+#define LOCAL_GL_CON_20_ATI                                  0x8955
+#define LOCAL_GL_CON_21_ATI                                  0x8956
+#define LOCAL_GL_CON_22_ATI                                  0x8957
+#define LOCAL_GL_CON_23_ATI                                  0x8958
+#define LOCAL_GL_CON_24_ATI                                  0x8959
+#define LOCAL_GL_CON_25_ATI                                  0x895A
+#define LOCAL_GL_CON_26_ATI                                  0x895B
+#define LOCAL_GL_CON_27_ATI                                  0x895C
+#define LOCAL_GL_CON_28_ATI                                  0x895D
+#define LOCAL_GL_CON_29_ATI                                  0x895E
+#define LOCAL_GL_CON_2_ATI                                   0x8943
+#define LOCAL_GL_CON_30_ATI                                  0x895F
+#define LOCAL_GL_CON_31_ATI                                  0x8960
+#define LOCAL_GL_CON_3_ATI                                   0x8944
+#define LOCAL_GL_CON_4_ATI                                   0x8945
+#define LOCAL_GL_CON_5_ATI                                   0x8946
+#define LOCAL_GL_CON_6_ATI                                   0x8947
+#define LOCAL_GL_CON_7_ATI                                   0x8948
+#define LOCAL_GL_CON_8_ATI                                   0x8949
+#define LOCAL_GL_CON_9_ATI                                   0x894A
+#define LOCAL_GL_COORD_REPLACE                               0x8862
+#define LOCAL_GL_COORD_REPLACE_ARB                           0x8862
+#define LOCAL_GL_COORD_REPLACE_NV                            0x8862
+#define LOCAL_GL_COORD_REPLACE_OES                           0x8862
+#define LOCAL_GL_COPY                                        0x1503
+#define LOCAL_GL_COPY_INVERTED                               0x150C
+#define LOCAL_GL_COPY_PIXEL_TOKEN                            0x0706
+#define LOCAL_GL_COPY_READ_BUFFER                            0x8F36
+#define LOCAL_GL_COPY_READ_BUFFER_BINDING                    0x8F36
+#define LOCAL_GL_COPY_READ_BUFFER_NV                         0x8F36
+#define LOCAL_GL_COPY_WRITE_BUFFER                           0x8F37
+#define LOCAL_GL_COPY_WRITE_BUFFER_BINDING                   0x8F37
+#define LOCAL_GL_COPY_WRITE_BUFFER_NV                        0x8F37
+#define LOCAL_GL_COUNTER_RANGE_AMD                           0x8BC1
+#define LOCAL_GL_COUNTER_TYPE_AMD                            0x8BC0
+#define LOCAL_GL_COUNT_DOWN_NV                               0x9089
+#define LOCAL_GL_COUNT_UP_NV                                 0x9088
+#define LOCAL_GL_COVERAGE_ALL_FRAGMENTS_NV                   0x8ED5
+#define LOCAL_GL_COVERAGE_ATTACHMENT_NV                      0x8ED2
+#define LOCAL_GL_COVERAGE_AUTOMATIC_NV                       0x8ED7
+#define LOCAL_GL_COVERAGE_BUFFERS_NV                         0x8ED3
+#define LOCAL_GL_COVERAGE_BUFFER_BIT_NV                      0x00008000
+#define LOCAL_GL_COVERAGE_COMPONENT4_NV                      0x8ED1
+#define LOCAL_GL_COVERAGE_COMPONENT_NV                       0x8ED0
+#define LOCAL_GL_COVERAGE_EDGE_FRAGMENTS_NV                  0x8ED6
+#define LOCAL_GL_COVERAGE_MODULATION_NV                      0x9332
+#define LOCAL_GL_COVERAGE_MODULATION_TABLE_NV                0x9331
+#define LOCAL_GL_COVERAGE_MODULATION_TABLE_SIZE_NV           0x9333
+#define LOCAL_GL_COVERAGE_SAMPLES_NV                         0x8ED4
+#define LOCAL_GL_CPU_OPTIMIZED_QCOM                          0x8FB1
+#define LOCAL_GL_CUBIC_CURVE_TO_NV                           0x0C
+#define LOCAL_GL_CUBIC_EXT                                   0x8334
+#define LOCAL_GL_CUBIC_HP                                    0x815F
+#define LOCAL_GL_CUBIC_IMG                                   0x9139
+#define LOCAL_GL_CUBIC_MIPMAP_LINEAR_IMG                     0x913B
+#define LOCAL_GL_CUBIC_MIPMAP_NEAREST_IMG                    0x913A
+#define LOCAL_GL_CULL_FACE                                   0x0B44
+#define LOCAL_GL_CULL_FACE_MODE                              0x0B45
+#define LOCAL_GL_CULL_FRAGMENT_NV                            0x86E7
+#define LOCAL_GL_CULL_MODES_NV                               0x86E0
+#define LOCAL_GL_CULL_VERTEX_EXT                             0x81AA
+#define LOCAL_GL_CULL_VERTEX_EYE_POSITION_EXT                0x81AB
+#define LOCAL_GL_CULL_VERTEX_IBM                             103050
+#define LOCAL_GL_CULL_VERTEX_OBJECT_POSITION_EXT             0x81AC
+#define LOCAL_GL_CURRENT_ATTRIB_NV                           0x8626
+#define LOCAL_GL_CURRENT_BINORMAL_EXT                        0x843C
+#define LOCAL_GL_CURRENT_BIT                                 0x00000001
+#define LOCAL_GL_CURRENT_COLOR                               0x0B00
+#define LOCAL_GL_CURRENT_FOG_COORD                           0x8453
+#define LOCAL_GL_CURRENT_FOG_COORDINATE                      0x8453
+#define LOCAL_GL_CURRENT_FOG_COORDINATE_EXT                  0x8453
+#define LOCAL_GL_CURRENT_INDEX                               0x0B01
+#define LOCAL_GL_CURRENT_MATRIX_ARB                          0x8641
+#define LOCAL_GL_CURRENT_MATRIX_INDEX_ARB                    0x8845
+#define LOCAL_GL_CURRENT_MATRIX_NV                           0x8641
+#define LOCAL_GL_CURRENT_MATRIX_STACK_DEPTH_ARB              0x8640
+#define LOCAL_GL_CURRENT_MATRIX_STACK_DEPTH_NV               0x8640
+#define LOCAL_GL_CURRENT_NORMAL                              0x0B02
+#define LOCAL_GL_CURRENT_OCCLUSION_QUERY_ID_NV               0x8865
+#define LOCAL_GL_CURRENT_PALETTE_MATRIX_ARB                  0x8843
+#define LOCAL_GL_CURRENT_PALETTE_MATRIX_OES                  0x8843
+#define LOCAL_GL_CURRENT_PROGRAM                             0x8B8D
+#define LOCAL_GL_CURRENT_QUERY                               0x8865
+#define LOCAL_GL_CURRENT_QUERY_ARB                           0x8865
+#define LOCAL_GL_CURRENT_QUERY_EXT                           0x8865
+#define LOCAL_GL_CURRENT_RASTER_COLOR                        0x0B04
+#define LOCAL_GL_CURRENT_RASTER_DISTANCE                     0x0B09
+#define LOCAL_GL_CURRENT_RASTER_INDEX                        0x0B05
+#define LOCAL_GL_CURRENT_RASTER_NORMAL_SGIX                  0x8406
+#define LOCAL_GL_CURRENT_RASTER_POSITION                     0x0B07
+#define LOCAL_GL_CURRENT_RASTER_POSITION_VALID               0x0B08
+#define LOCAL_GL_CURRENT_RASTER_SECONDARY_COLOR              0x845F
+#define LOCAL_GL_CURRENT_RASTER_TEXTURE_COORDS               0x0B06
+#define LOCAL_GL_CURRENT_SECONDARY_COLOR                     0x8459
+#define LOCAL_GL_CURRENT_SECONDARY_COLOR_EXT                 0x8459
+#define LOCAL_GL_CURRENT_TANGENT_EXT                         0x843B
+#define LOCAL_GL_CURRENT_TEXTURE_COORDS                      0x0B03
+#define LOCAL_GL_CURRENT_TIME_NV                             0x8E28
+#define LOCAL_GL_CURRENT_VERTEX_ATTRIB                       0x8626
+#define LOCAL_GL_CURRENT_VERTEX_ATTRIB_ARB                   0x8626
+#define LOCAL_GL_CURRENT_VERTEX_EXT                          0x87E2
+#define LOCAL_GL_CURRENT_VERTEX_WEIGHT_EXT                   0x850B
+#define LOCAL_GL_CURRENT_WEIGHT_ARB                          0x86A8
+#define LOCAL_GL_CW                                          0x0900
+#define LOCAL_GL_D3D12_FENCE_VALUE_EXT                       0x9595
+#define LOCAL_GL_DARKEN                                      0x9297
+#define LOCAL_GL_DARKEN_KHR                                  0x9297
+#define LOCAL_GL_DARKEN_NV                                   0x9297
+#define LOCAL_GL_DATA_BUFFER_AMD                             0x9151
+#define LOCAL_GL_DEBUG_ASSERT_MESA                           0x875B
+#define LOCAL_GL_DEBUG_CALLBACK_FUNCTION                     0x8244
+#define LOCAL_GL_DEBUG_CALLBACK_FUNCTION_ARB                 0x8244
+#define LOCAL_GL_DEBUG_CALLBACK_FUNCTION_KHR                 0x8244
+#define LOCAL_GL_DEBUG_CALLBACK_USER_PARAM                   0x8245
+#define LOCAL_GL_DEBUG_CALLBACK_USER_PARAM_ARB               0x8245
+#define LOCAL_GL_DEBUG_CALLBACK_USER_PARAM_KHR               0x8245
+#define LOCAL_GL_DEBUG_CATEGORY_API_ERROR_AMD                0x9149
+#define LOCAL_GL_DEBUG_CATEGORY_APPLICATION_AMD              0x914F
+#define LOCAL_GL_DEBUG_CATEGORY_DEPRECATION_AMD              0x914B
+#define LOCAL_GL_DEBUG_CATEGORY_OTHER_AMD                    0x9150
+#define LOCAL_GL_DEBUG_CATEGORY_PERFORMANCE_AMD              0x914D
+#define LOCAL_GL_DEBUG_CATEGORY_SHADER_COMPILER_AMD          0x914E
+#define LOCAL_GL_DEBUG_CATEGORY_UNDEFINED_BEHAVIOR_AMD       0x914C
+#define LOCAL_GL_DEBUG_CATEGORY_WINDOW_SYSTEM_AMD            0x914A
+#define LOCAL_GL_DEBUG_GROUP_STACK_DEPTH                     0x826D
+#define LOCAL_GL_DEBUG_GROUP_STACK_DEPTH_KHR                 0x826D
+#define LOCAL_GL_DEBUG_LOGGED_MESSAGES                       0x9145
+#define LOCAL_GL_DEBUG_LOGGED_MESSAGES_AMD                   0x9145
+#define LOCAL_GL_DEBUG_LOGGED_MESSAGES_ARB                   0x9145
+#define LOCAL_GL_DEBUG_LOGGED_MESSAGES_KHR                   0x9145
+#define LOCAL_GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH            0x8243
+#define LOCAL_GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB        0x8243
+#define LOCAL_GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_KHR        0x8243
+#define LOCAL_GL_DEBUG_OBJECT_MESA                           0x8759
+#define LOCAL_GL_DEBUG_OUTPUT                                0x92E0
+#define LOCAL_GL_DEBUG_OUTPUT_KHR                            0x92E0
+#define LOCAL_GL_DEBUG_OUTPUT_SYNCHRONOUS                    0x8242
+#define LOCAL_GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB                0x8242
+#define LOCAL_GL_DEBUG_OUTPUT_SYNCHRONOUS_KHR                0x8242
+#define LOCAL_GL_DEBUG_PRINT_MESA                            0x875A
+#define LOCAL_GL_DEBUG_SEVERITY_HIGH                         0x9146
+#define LOCAL_GL_DEBUG_SEVERITY_HIGH_AMD                     0x9146
+#define LOCAL_GL_DEBUG_SEVERITY_HIGH_ARB                     0x9146
+#define LOCAL_GL_DEBUG_SEVERITY_HIGH_KHR                     0x9146
+#define LOCAL_GL_DEBUG_SEVERITY_LOW                          0x9148
+#define LOCAL_GL_DEBUG_SEVERITY_LOW_AMD                      0x9148
+#define LOCAL_GL_DEBUG_SEVERITY_LOW_ARB                      0x9148
+#define LOCAL_GL_DEBUG_SEVERITY_LOW_KHR                      0x9148
+#define LOCAL_GL_DEBUG_SEVERITY_MEDIUM                       0x9147
+#define LOCAL_GL_DEBUG_SEVERITY_MEDIUM_AMD                   0x9147
+#define LOCAL_GL_DEBUG_SEVERITY_MEDIUM_ARB                   0x9147
+#define LOCAL_GL_DEBUG_SEVERITY_MEDIUM_KHR                   0x9147
+#define LOCAL_GL_DEBUG_SEVERITY_NOTIFICATION                 0x826B
+#define LOCAL_GL_DEBUG_SEVERITY_NOTIFICATION_KHR             0x826B
+#define LOCAL_GL_DEBUG_SOURCE_API                            0x8246
+#define LOCAL_GL_DEBUG_SOURCE_API_ARB                        0x8246
+#define LOCAL_GL_DEBUG_SOURCE_API_KHR                        0x8246
+#define LOCAL_GL_DEBUG_SOURCE_APPLICATION                    0x824A
+#define LOCAL_GL_DEBUG_SOURCE_APPLICATION_ARB                0x824A
+#define LOCAL_GL_DEBUG_SOURCE_APPLICATION_KHR                0x824A
+#define LOCAL_GL_DEBUG_SOURCE_OTHER                          0x824B
+#define LOCAL_GL_DEBUG_SOURCE_OTHER_ARB                      0x824B
+#define LOCAL_GL_DEBUG_SOURCE_OTHER_KHR                      0x824B
+#define LOCAL_GL_DEBUG_SOURCE_SHADER_COMPILER                0x8248
+#define LOCAL_GL_DEBUG_SOURCE_SHADER_COMPILER_ARB            0x8248
+#define LOCAL_GL_DEBUG_SOURCE_SHADER_COMPILER_KHR            0x8248
+#define LOCAL_GL_DEBUG_SOURCE_THIRD_PARTY                    0x8249
+#define LOCAL_GL_DEBUG_SOURCE_THIRD_PARTY_ARB                0x8249
+#define LOCAL_GL_DEBUG_SOURCE_THIRD_PARTY_KHR                0x8249
+#define LOCAL_GL_DEBUG_SOURCE_WINDOW_SYSTEM                  0x8247
+#define LOCAL_GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB              0x8247
+#define LOCAL_GL_DEBUG_SOURCE_WINDOW_SYSTEM_KHR              0x8247
+#define LOCAL_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR              0x824D
+#define LOCAL_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB          0x824D
+#define LOCAL_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_KHR          0x824D
+#define LOCAL_GL_DEBUG_TYPE_ERROR                            0x824C
+#define LOCAL_GL_DEBUG_TYPE_ERROR_ARB                        0x824C
+#define LOCAL_GL_DEBUG_TYPE_ERROR_KHR                        0x824C
+#define LOCAL_GL_DEBUG_TYPE_MARKER                           0x8268
+#define LOCAL_GL_DEBUG_TYPE_MARKER_KHR                       0x8268
+#define LOCAL_GL_DEBUG_TYPE_OTHER                            0x8251
+#define LOCAL_GL_DEBUG_TYPE_OTHER_ARB                        0x8251
+#define LOCAL_GL_DEBUG_TYPE_OTHER_KHR                        0x8251
+#define LOCAL_GL_DEBUG_TYPE_PERFORMANCE                      0x8250
+#define LOCAL_GL_DEBUG_TYPE_PERFORMANCE_ARB                  0x8250
+#define LOCAL_GL_DEBUG_TYPE_PERFORMANCE_KHR                  0x8250
+#define LOCAL_GL_DEBUG_TYPE_POP_GROUP                        0x826A
+#define LOCAL_GL_DEBUG_TYPE_POP_GROUP_KHR                    0x826A
+#define LOCAL_GL_DEBUG_TYPE_PORTABILITY                      0x824F
+#define LOCAL_GL_DEBUG_TYPE_PORTABILITY_ARB                  0x824F
+#define LOCAL_GL_DEBUG_TYPE_PORTABILITY_KHR                  0x824F
+#define LOCAL_GL_DEBUG_TYPE_PUSH_GROUP                       0x8269
+#define LOCAL_GL_DEBUG_TYPE_PUSH_GROUP_KHR                   0x8269
+#define LOCAL_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR               0x824E
+#define LOCAL_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB           0x824E
+#define LOCAL_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_KHR           0x824E
+#define LOCAL_GL_DECAL                                       0x2101
+#define LOCAL_GL_DECODE_EXT                                  0x8A49
+#define LOCAL_GL_DECR                                        0x1E03
+#define LOCAL_GL_DECR_WRAP                                   0x8508
+#define LOCAL_GL_DECR_WRAP_EXT                               0x8508
+#define LOCAL_GL_DECR_WRAP_OES                               0x8508
+#define LOCAL_GL_DEDICATED_MEMORY_OBJECT_EXT                 0x9581
+#define LOCAL_GL_DEFORMATIONS_MASK_SGIX                      0x8196
+#define LOCAL_GL_DELETE_STATUS                               0x8B80
+#define LOCAL_GL_DEPENDENT_AR_TEXTURE_2D_NV                  0x86E9
+#define LOCAL_GL_DEPENDENT_GB_TEXTURE_2D_NV                  0x86EA
+#define LOCAL_GL_DEPENDENT_HILO_TEXTURE_2D_NV                0x8858
+#define LOCAL_GL_DEPENDENT_RGB_TEXTURE_3D_NV                 0x8859
+#define LOCAL_GL_DEPENDENT_RGB_TEXTURE_CUBE_MAP_NV           0x885A
+#define LOCAL_GL_DEPTH                                       0x1801
+#define LOCAL_GL_DEPTH24_STENCIL8                            0x88F0
+#define LOCAL_GL_DEPTH24_STENCIL8_EXT                        0x88F0
+#define LOCAL_GL_DEPTH24_STENCIL8_OES                        0x88F0
+#define LOCAL_GL_DEPTH32F_STENCIL8                           0x8CAD
+#define LOCAL_GL_DEPTH32F_STENCIL8_NV                        0x8DAC
+#define LOCAL_GL_DEPTH_ATTACHMENT                            0x8D00
+#define LOCAL_GL_DEPTH_ATTACHMENT_EXT                        0x8D00
+#define LOCAL_GL_DEPTH_ATTACHMENT_OES                        0x8D00
+#define LOCAL_GL_DEPTH_BIAS                                  0x0D1F
+#define LOCAL_GL_DEPTH_BITS                                  0x0D56
+#define LOCAL_GL_DEPTH_BOUNDS_EXT                            0x8891
+#define LOCAL_GL_DEPTH_BOUNDS_TEST_EXT                       0x8890
+#define LOCAL_GL_DEPTH_BUFFER_BIT                            0x00000100
+#define LOCAL_GL_DEPTH_BUFFER_BIT0_QCOM                      0x00000100
+#define LOCAL_GL_DEPTH_BUFFER_BIT1_QCOM                      0x00000200
+#define LOCAL_GL_DEPTH_BUFFER_BIT2_QCOM                      0x00000400
+#define LOCAL_GL_DEPTH_BUFFER_BIT3_QCOM                      0x00000800
+#define LOCAL_GL_DEPTH_BUFFER_BIT4_QCOM                      0x00001000
+#define LOCAL_GL_DEPTH_BUFFER_BIT5_QCOM                      0x00002000
+#define LOCAL_GL_DEPTH_BUFFER_BIT6_QCOM                      0x00004000
+#define LOCAL_GL_DEPTH_BUFFER_BIT7_QCOM                      0x00008000
+#define LOCAL_GL_DEPTH_BUFFER_FLOAT_MODE_NV                  0x8DAF
+#define LOCAL_GL_DEPTH_CLAMP                                 0x864F
+#define LOCAL_GL_DEPTH_CLAMP_EXT                             0x864F
+#define LOCAL_GL_DEPTH_CLAMP_FAR_AMD                         0x901F
+#define LOCAL_GL_DEPTH_CLAMP_NEAR_AMD                        0x901E
+#define LOCAL_GL_DEPTH_CLAMP_NV                              0x864F
+#define LOCAL_GL_DEPTH_CLEAR_VALUE                           0x0B73
+#define LOCAL_GL_DEPTH_COMPONENT                             0x1902
+#define LOCAL_GL_DEPTH_COMPONENT16                           0x81A5
+#define LOCAL_GL_DEPTH_COMPONENT16_ARB                       0x81A5
+#define LOCAL_GL_DEPTH_COMPONENT16_NONLINEAR_NV              0x8E2C
+#define LOCAL_GL_DEPTH_COMPONENT16_OES                       0x81A5
+#define LOCAL_GL_DEPTH_COMPONENT16_SGIX                      0x81A5
+#define LOCAL_GL_DEPTH_COMPONENT24                           0x81A6
+#define LOCAL_GL_DEPTH_COMPONENT24_ARB                       0x81A6
+#define LOCAL_GL_DEPTH_COMPONENT24_OES                       0x81A6
+#define LOCAL_GL_DEPTH_COMPONENT24_SGIX                      0x81A6
+#define LOCAL_GL_DEPTH_COMPONENT32                           0x81A7
+#define LOCAL_GL_DEPTH_COMPONENT32F                          0x8CAC
+#define LOCAL_GL_DEPTH_COMPONENT32F_NV                       0x8DAB
+#define LOCAL_GL_DEPTH_COMPONENT32_ARB                       0x81A7
+#define LOCAL_GL_DEPTH_COMPONENT32_OES                       0x81A7
+#define LOCAL_GL_DEPTH_COMPONENT32_SGIX                      0x81A7
+#define LOCAL_GL_DEPTH_COMPONENTS                            0x8284
+#define LOCAL_GL_DEPTH_EXT                                   0x1801
+#define LOCAL_GL_DEPTH_FUNC                                  0x0B74
+#define LOCAL_GL_DEPTH_PASS_INSTRUMENT_COUNTERS_SGIX         0x8311
+#define LOCAL_GL_DEPTH_PASS_INSTRUMENT_MAX_SGIX              0x8312
+#define LOCAL_GL_DEPTH_PASS_INSTRUMENT_SGIX                  0x8310
+#define LOCAL_GL_DEPTH_RANGE                                 0x0B70
+#define LOCAL_GL_DEPTH_RENDERABLE                            0x8287
+#define LOCAL_GL_DEPTH_SAMPLES_NV                            0x932D
+#define LOCAL_GL_DEPTH_SCALE                                 0x0D1E
+#define LOCAL_GL_DEPTH_STENCIL                               0x84F9
+#define LOCAL_GL_DEPTH_STENCIL_ATTACHMENT                    0x821A
+#define LOCAL_GL_DEPTH_STENCIL_EXT                           0x84F9
+#define LOCAL_GL_DEPTH_STENCIL_MESA                          0x8750
+#define LOCAL_GL_DEPTH_STENCIL_NV                            0x84F9
+#define LOCAL_GL_DEPTH_STENCIL_OES                           0x84F9
+#define LOCAL_GL_DEPTH_STENCIL_TEXTURE_MODE                  0x90EA
+#define LOCAL_GL_DEPTH_STENCIL_TO_BGRA_NV                    0x886F
+#define LOCAL_GL_DEPTH_STENCIL_TO_RGBA_NV                    0x886E
+#define LOCAL_GL_DEPTH_TEST                                  0x0B71
+#define LOCAL_GL_DEPTH_TEXTURE_MODE                          0x884B
+#define LOCAL_GL_DEPTH_TEXTURE_MODE_ARB                      0x884B
+#define LOCAL_GL_DEPTH_WRITEMASK                             0x0B72
+#define LOCAL_GL_DETACHED_BUFFERS_NV                         0x95AB
+#define LOCAL_GL_DETACHED_MEMORY_INCARNATION_NV              0x95A9
+#define LOCAL_GL_DETACHED_TEXTURES_NV                        0x95AA
+#define LOCAL_GL_DETAIL_TEXTURE_2D_BINDING_SGIS              0x8096
+#define LOCAL_GL_DETAIL_TEXTURE_2D_SGIS                      0x8095
+#define LOCAL_GL_DETAIL_TEXTURE_FUNC_POINTS_SGIS             0x809C
+#define LOCAL_GL_DETAIL_TEXTURE_LEVEL_SGIS                   0x809A
+#define LOCAL_GL_DETAIL_TEXTURE_MODE_SGIS                    0x809B
+#define LOCAL_GL_DEVICE_LUID_EXT                             0x9599
+#define LOCAL_GL_DEVICE_NODE_MASK_EXT                        0x959A
+#define LOCAL_GL_DEVICE_UUID_EXT                             0x9597
+#define LOCAL_GL_DIFFERENCE                                  0x929E
+#define LOCAL_GL_DIFFERENCE_KHR                              0x929E
+#define LOCAL_GL_DIFFERENCE_NV                               0x929E
+#define LOCAL_GL_DIFFUSE                                     0x1201
+#define LOCAL_GL_DISCARD_ATI                                 0x8763
+#define LOCAL_GL_DISCARD_NV                                  0x8530
+#define LOCAL_GL_DISCRETE_AMD                                0x9006
+#define LOCAL_GL_DISJOINT_NV                                 0x9283
+#define LOCAL_GL_DISPATCH_INDIRECT_BUFFER                    0x90EE
+#define LOCAL_GL_DISPATCH_INDIRECT_BUFFER_BINDING            0x90EF
+#define LOCAL_GL_DISPLAY_LIST                                0x82E7
+#define LOCAL_GL_DISTANCE_ATTENUATION_EXT                    0x8129
+#define LOCAL_GL_DISTANCE_ATTENUATION_SGIS                   0x8129
+#define LOCAL_GL_DITHER                                      0x0BD0
+#define LOCAL_GL_DMP_PROGRAM_BINARY_DMP                      0x9253
+#define LOCAL_GL_DOMAIN                                      0x0A02
+#define LOCAL_GL_DONT_CARE                                   0x1100
+#define LOCAL_GL_DOT2_ADD_ATI                                0x896C
+#define LOCAL_GL_DOT3_ATI                                    0x8966
+#define LOCAL_GL_DOT3_RGB                                    0x86AE
+#define LOCAL_GL_DOT3_RGBA                                   0x86AF
+#define LOCAL_GL_DOT3_RGBA_ARB                               0x86AF
+#define LOCAL_GL_DOT3_RGBA_EXT                               0x8741
+#define LOCAL_GL_DOT3_RGBA_IMG                               0x86AF
+#define LOCAL_GL_DOT3_RGB_ARB                                0x86AE
+#define LOCAL_GL_DOT3_RGB_EXT                                0x8740
+#define LOCAL_GL_DOT4_ATI                                    0x8967
+#define LOCAL_GL_DOT_PRODUCT_AFFINE_DEPTH_REPLACE_NV         0x885D
+#define LOCAL_GL_DOT_PRODUCT_CONST_EYE_REFLECT_CUBE_MAP_NV   0x86F3
+#define LOCAL_GL_DOT_PRODUCT_DEPTH_REPLACE_NV                0x86ED
+#define LOCAL_GL_DOT_PRODUCT_DIFFUSE_CUBE_MAP_NV             0x86F1
+#define LOCAL_GL_DOT_PRODUCT_NV                              0x86EC
+#define LOCAL_GL_DOT_PRODUCT_PASS_THROUGH_NV                 0x885B
+#define LOCAL_GL_DOT_PRODUCT_REFLECT_CUBE_MAP_NV             0x86F2
+#define LOCAL_GL_DOT_PRODUCT_TEXTURE_1D_NV                   0x885C
+#define LOCAL_GL_DOT_PRODUCT_TEXTURE_2D_NV                   0x86EE
+#define LOCAL_GL_DOT_PRODUCT_TEXTURE_3D_NV                   0x86EF
+#define LOCAL_GL_DOT_PRODUCT_TEXTURE_CUBE_MAP_NV             0x86F0
+#define LOCAL_GL_DOT_PRODUCT_TEXTURE_RECTANGLE_NV            0x864E
+#define LOCAL_GL_DOUBLE                                      0x140A
+#define LOCAL_GL_DOUBLEBUFFER                                0x0C32
+#define LOCAL_GL_DOUBLE_EXT                                  0x140A
+#define LOCAL_GL_DOUBLE_MAT2                                 0x8F46
+#define LOCAL_GL_DOUBLE_MAT2_EXT                             0x8F46
+#define LOCAL_GL_DOUBLE_MAT2x3                               0x8F49
+#define LOCAL_GL_DOUBLE_MAT2x3_EXT                           0x8F49
+#define LOCAL_GL_DOUBLE_MAT2x4                               0x8F4A
+#define LOCAL_GL_DOUBLE_MAT2x4_EXT                           0x8F4A
+#define LOCAL_GL_DOUBLE_MAT3                                 0x8F47
+#define LOCAL_GL_DOUBLE_MAT3_EXT                             0x8F47
+#define LOCAL_GL_DOUBLE_MAT3x2                               0x8F4B
+#define LOCAL_GL_DOUBLE_MAT3x2_EXT                           0x8F4B
+#define LOCAL_GL_DOUBLE_MAT3x4                               0x8F4C
+#define LOCAL_GL_DOUBLE_MAT3x4_EXT                           0x8F4C
+#define LOCAL_GL_DOUBLE_MAT4                                 0x8F48
+#define LOCAL_GL_DOUBLE_MAT4_EXT                             0x8F48
+#define LOCAL_GL_DOUBLE_MAT4x2                               0x8F4D
+#define LOCAL_GL_DOUBLE_MAT4x2_EXT                           0x8F4D
+#define LOCAL_GL_DOUBLE_MAT4x3                               0x8F4E
+#define LOCAL_GL_DOUBLE_MAT4x3_EXT                           0x8F4E
+#define LOCAL_GL_DOUBLE_VEC2                                 0x8FFC
+#define LOCAL_GL_DOUBLE_VEC2_EXT                             0x8FFC
+#define LOCAL_GL_DOUBLE_VEC3                                 0x8FFD
+#define LOCAL_GL_DOUBLE_VEC3_EXT                             0x8FFD
+#define LOCAL_GL_DOUBLE_VEC4                                 0x8FFE
+#define LOCAL_GL_DOUBLE_VEC4_EXT                             0x8FFE
+#define LOCAL_GL_DOWNSAMPLE_SCALES_IMG                       0x913E
+#define LOCAL_GL_DRAW_ARRAYS_COMMAND_NV                      0x0003
+#define LOCAL_GL_DRAW_ARRAYS_INSTANCED_COMMAND_NV            0x0007
+#define LOCAL_GL_DRAW_ARRAYS_STRIP_COMMAND_NV                0x0005
+#define LOCAL_GL_DRAW_BUFFER                                 0x0C01
+#define LOCAL_GL_DRAW_BUFFER0                                0x8825
+#define LOCAL_GL_DRAW_BUFFER0_ARB                            0x8825
+#define LOCAL_GL_DRAW_BUFFER0_ATI                            0x8825
+#define LOCAL_GL_DRAW_BUFFER0_EXT                            0x8825
+#define LOCAL_GL_DRAW_BUFFER0_NV                             0x8825
+#define LOCAL_GL_DRAW_BUFFER1                                0x8826
+#define LOCAL_GL_DRAW_BUFFER10                               0x882F
+#define LOCAL_GL_DRAW_BUFFER10_ARB                           0x882F
+#define LOCAL_GL_DRAW_BUFFER10_ATI                           0x882F
+#define LOCAL_GL_DRAW_BUFFER10_EXT                           0x882F
+#define LOCAL_GL_DRAW_BUFFER10_NV                            0x882F
+#define LOCAL_GL_DRAW_BUFFER11                               0x8830
+#define LOCAL_GL_DRAW_BUFFER11_ARB                           0x8830
+#define LOCAL_GL_DRAW_BUFFER11_ATI                           0x8830
+#define LOCAL_GL_DRAW_BUFFER11_EXT                           0x8830
+#define LOCAL_GL_DRAW_BUFFER11_NV                            0x8830
+#define LOCAL_GL_DRAW_BUFFER12                               0x8831
+#define LOCAL_GL_DRAW_BUFFER12_ARB                           0x8831
+#define LOCAL_GL_DRAW_BUFFER12_ATI                           0x8831
+#define LOCAL_GL_DRAW_BUFFER12_EXT                           0x8831
+#define LOCAL_GL_DRAW_BUFFER12_NV                            0x8831
+#define LOCAL_GL_DRAW_BUFFER13                               0x8832
+#define LOCAL_GL_DRAW_BUFFER13_ARB                           0x8832
+#define LOCAL_GL_DRAW_BUFFER13_ATI                           0x8832
+#define LOCAL_GL_DRAW_BUFFER13_EXT                           0x8832
+#define LOCAL_GL_DRAW_BUFFER13_NV                            0x8832
+#define LOCAL_GL_DRAW_BUFFER14                               0x8833
+#define LOCAL_GL_DRAW_BUFFER14_ARB                           0x8833
+#define LOCAL_GL_DRAW_BUFFER14_ATI                           0x8833
+#define LOCAL_GL_DRAW_BUFFER14_EXT                           0x8833
+#define LOCAL_GL_DRAW_BUFFER14_NV                            0x8833
+#define LOCAL_GL_DRAW_BUFFER15                               0x8834
+#define LOCAL_GL_DRAW_BUFFER15_ARB                           0x8834
+#define LOCAL_GL_DRAW_BUFFER15_ATI                           0x8834
+#define LOCAL_GL_DRAW_BUFFER15_EXT                           0x8834
+#define LOCAL_GL_DRAW_BUFFER15_NV                            0x8834
+#define LOCAL_GL_DRAW_BUFFER1_ARB                            0x8826
+#define LOCAL_GL_DRAW_BUFFER1_ATI                            0x8826
+#define LOCAL_GL_DRAW_BUFFER1_EXT                            0x8826
+#define LOCAL_GL_DRAW_BUFFER1_NV                             0x8826
+#define LOCAL_GL_DRAW_BUFFER2                                0x8827
+#define LOCAL_GL_DRAW_BUFFER2_ARB                            0x8827
+#define LOCAL_GL_DRAW_BUFFER2_ATI                            0x8827
+#define LOCAL_GL_DRAW_BUFFER2_EXT                            0x8827
+#define LOCAL_GL_DRAW_BUFFER2_NV                             0x8827
+#define LOCAL_GL_DRAW_BUFFER3                                0x8828
+#define LOCAL_GL_DRAW_BUFFER3_ARB                            0x8828
+#define LOCAL_GL_DRAW_BUFFER3_ATI                            0x8828
+#define LOCAL_GL_DRAW_BUFFER3_EXT                            0x8828
+#define LOCAL_GL_DRAW_BUFFER3_NV                             0x8828
+#define LOCAL_GL_DRAW_BUFFER4                                0x8829
+#define LOCAL_GL_DRAW_BUFFER4_ARB                            0x8829
+#define LOCAL_GL_DRAW_BUFFER4_ATI                            0x8829
+#define LOCAL_GL_DRAW_BUFFER4_EXT                            0x8829
+#define LOCAL_GL_DRAW_BUFFER4_NV                             0x8829
+#define LOCAL_GL_DRAW_BUFFER5                                0x882A
+#define LOCAL_GL_DRAW_BUFFER5_ARB                            0x882A
+#define LOCAL_GL_DRAW_BUFFER5_ATI                            0x882A
+#define LOCAL_GL_DRAW_BUFFER5_EXT                            0x882A
+#define LOCAL_GL_DRAW_BUFFER5_NV                             0x882A
+#define LOCAL_GL_DRAW_BUFFER6                                0x882B
+#define LOCAL_GL_DRAW_BUFFER6_ARB                            0x882B
+#define LOCAL_GL_DRAW_BUFFER6_ATI                            0x882B
+#define LOCAL_GL_DRAW_BUFFER6_EXT                            0x882B
+#define LOCAL_GL_DRAW_BUFFER6_NV                             0x882B
+#define LOCAL_GL_DRAW_BUFFER7                                0x882C
+#define LOCAL_GL_DRAW_BUFFER7_ARB                            0x882C
+#define LOCAL_GL_DRAW_BUFFER7_ATI                            0x882C
+#define LOCAL_GL_DRAW_BUFFER7_EXT                            0x882C
+#define LOCAL_GL_DRAW_BUFFER7_NV                             0x882C
+#define LOCAL_GL_DRAW_BUFFER8                                0x882D
+#define LOCAL_GL_DRAW_BUFFER8_ARB                            0x882D
+#define LOCAL_GL_DRAW_BUFFER8_ATI                            0x882D
+#define LOCAL_GL_DRAW_BUFFER8_EXT                            0x882D
+#define LOCAL_GL_DRAW_BUFFER8_NV                             0x882D
+#define LOCAL_GL_DRAW_BUFFER9                                0x882E
+#define LOCAL_GL_DRAW_BUFFER9_ARB                            0x882E
+#define LOCAL_GL_DRAW_BUFFER9_ATI                            0x882E
+#define LOCAL_GL_DRAW_BUFFER9_EXT                            0x882E
+#define LOCAL_GL_DRAW_BUFFER9_NV                             0x882E
+#define LOCAL_GL_DRAW_BUFFER_EXT                             0x0C01
+#define LOCAL_GL_DRAW_ELEMENTS_COMMAND_NV                    0x0002
+#define LOCAL_GL_DRAW_ELEMENTS_INSTANCED_COMMAND_NV          0x0006
+#define LOCAL_GL_DRAW_ELEMENTS_STRIP_COMMAND_NV              0x0004
+#define LOCAL_GL_DRAW_FRAMEBUFFER                            0x8CA9
+#define LOCAL_GL_DRAW_FRAMEBUFFER_ANGLE                      0x8CA9
+#define LOCAL_GL_DRAW_FRAMEBUFFER_APPLE                      0x8CA9
+#define LOCAL_GL_DRAW_FRAMEBUFFER_BINDING                    0x8CA6
+#define LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_ANGLE              0x8CA6
+#define LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_APPLE              0x8CA6
+#define LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT                0x8CA6
+#define LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_NV                 0x8CA6
+#define LOCAL_GL_DRAW_FRAMEBUFFER_EXT                        0x8CA9
+#define LOCAL_GL_DRAW_FRAMEBUFFER_NV                         0x8CA9
+#define LOCAL_GL_DRAW_INDIRECT_ADDRESS_NV                    0x8F41
+#define LOCAL_GL_DRAW_INDIRECT_BUFFER                        0x8F3F
+#define LOCAL_GL_DRAW_INDIRECT_BUFFER_BINDING                0x8F43
+#define LOCAL_GL_DRAW_INDIRECT_LENGTH_NV                     0x8F42
+#define LOCAL_GL_DRAW_INDIRECT_UNIFIED_NV                    0x8F40
+#define LOCAL_GL_DRAW_PIXELS_APPLE                           0x8A0A
+#define LOCAL_GL_DRAW_PIXEL_TOKEN                            0x0705
+#define LOCAL_GL_DRIVER_UUID_EXT                             0x9598
+#define LOCAL_GL_DSDT8_MAG8_INTENSITY8_NV                    0x870B
+#define LOCAL_GL_DSDT8_MAG8_NV                               0x870A
+#define LOCAL_GL_DSDT8_NV                                    0x8709
+#define LOCAL_GL_DSDT_MAG_INTENSITY_NV                       0x86DC
+#define LOCAL_GL_DSDT_MAG_NV                                 0x86F6
+#define LOCAL_GL_DSDT_MAG_VIB_NV                             0x86F7
+#define LOCAL_GL_DSDT_NV                                     0x86F5
+#define LOCAL_GL_DST_ALPHA                                   0x0304
+#define LOCAL_GL_DST_ATOP_NV                                 0x928F
+#define LOCAL_GL_DST_COLOR                                   0x0306
+#define LOCAL_GL_DST_IN_NV                                   0x928B
+#define LOCAL_GL_DST_NV                                      0x9287
+#define LOCAL_GL_DST_OUT_NV                                  0x928D
+#define LOCAL_GL_DST_OVER_NV                                 0x9289
+#define LOCAL_GL_DS_BIAS_NV                                  0x8716
+#define LOCAL_GL_DS_SCALE_NV                                 0x8710
+#define LOCAL_GL_DT_BIAS_NV                                  0x8717
+#define LOCAL_GL_DT_SCALE_NV                                 0x8711
+#define LOCAL_GL_DU8DV8_ATI                                  0x877A
+#define LOCAL_GL_DUAL_ALPHA12_SGIS                           0x8112
+#define LOCAL_GL_DUAL_ALPHA16_SGIS                           0x8113
+#define LOCAL_GL_DUAL_ALPHA4_SGIS                            0x8110
+#define LOCAL_GL_DUAL_ALPHA8_SGIS                            0x8111
+#define LOCAL_GL_DUAL_INTENSITY12_SGIS                       0x811A
+#define LOCAL_GL_DUAL_INTENSITY16_SGIS                       0x811B
+#define LOCAL_GL_DUAL_INTENSITY4_SGIS                        0x8118
+#define LOCAL_GL_DUAL_INTENSITY8_SGIS                        0x8119
+#define LOCAL_GL_DUAL_LUMINANCE12_SGIS                       0x8116
+#define LOCAL_GL_DUAL_LUMINANCE16_SGIS                       0x8117
+#define LOCAL_GL_DUAL_LUMINANCE4_SGIS                        0x8114
+#define LOCAL_GL_DUAL_LUMINANCE8_SGIS                        0x8115
+#define LOCAL_GL_DUAL_LUMINANCE_ALPHA4_SGIS                  0x811C
+#define LOCAL_GL_DUAL_LUMINANCE_ALPHA8_SGIS                  0x811D
+#define LOCAL_GL_DUAL_TEXTURE_SELECT_SGIS                    0x8124
+#define LOCAL_GL_DUDV_ATI                                    0x8779
+#define LOCAL_GL_DUP_FIRST_CUBIC_CURVE_TO_NV                 0xF2
+#define LOCAL_GL_DUP_LAST_CUBIC_CURVE_TO_NV                  0xF4
+#define LOCAL_GL_DYNAMIC_ATI                                 0x8761
+#define LOCAL_GL_DYNAMIC_COPY                                0x88EA
+#define LOCAL_GL_DYNAMIC_COPY_ARB                            0x88EA
+#define LOCAL_GL_DYNAMIC_DRAW                                0x88E8
+#define LOCAL_GL_DYNAMIC_DRAW_ARB                            0x88E8
+#define LOCAL_GL_DYNAMIC_READ                                0x88E9
+#define LOCAL_GL_DYNAMIC_READ_ARB                            0x88E9
+#define LOCAL_GL_DYNAMIC_STORAGE_BIT                         0x0100
+#define LOCAL_GL_DYNAMIC_STORAGE_BIT_EXT                     0x0100
+#define LOCAL_GL_EDGEFLAG_BIT_PGI                            0x00040000
+#define LOCAL_GL_EDGE_FLAG                                   0x0B43
+#define LOCAL_GL_EDGE_FLAG_ARRAY                             0x8079
+#define LOCAL_GL_EDGE_FLAG_ARRAY_ADDRESS_NV                  0x8F26
+#define LOCAL_GL_EDGE_FLAG_ARRAY_BUFFER_BINDING              0x889B
+#define LOCAL_GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB          0x889B
+#define LOCAL_GL_EDGE_FLAG_ARRAY_COUNT_EXT                   0x808D
+#define LOCAL_GL_EDGE_FLAG_ARRAY_EXT                         0x8079
+#define LOCAL_GL_EDGE_FLAG_ARRAY_LENGTH_NV                   0x8F30
+#define LOCAL_GL_EDGE_FLAG_ARRAY_LIST_IBM                    103075
+#define LOCAL_GL_EDGE_FLAG_ARRAY_LIST_STRIDE_IBM             103085
+#define LOCAL_GL_EDGE_FLAG_ARRAY_POINTER                     0x8093
+#define LOCAL_GL_EDGE_FLAG_ARRAY_POINTER_EXT                 0x8093
+#define LOCAL_GL_EDGE_FLAG_ARRAY_STRIDE                      0x808C
+#define LOCAL_GL_EDGE_FLAG_ARRAY_STRIDE_EXT                  0x808C
+#define LOCAL_GL_EFFECTIVE_RASTER_SAMPLES_EXT                0x932C
+#define LOCAL_GL_EIGHTH_BIT_ATI                              0x00000020
+#define LOCAL_GL_ELEMENT_ADDRESS_COMMAND_NV                  0x0008
+#define LOCAL_GL_ELEMENT_ARRAY_ADDRESS_NV                    0x8F29
+#define LOCAL_GL_ELEMENT_ARRAY_APPLE                         0x8A0C
+#define LOCAL_GL_ELEMENT_ARRAY_ATI                           0x8768
+#define LOCAL_GL_ELEMENT_ARRAY_BARRIER_BIT                   0x00000002
+#define LOCAL_GL_ELEMENT_ARRAY_BARRIER_BIT_EXT               0x00000002
+#define LOCAL_GL_ELEMENT_ARRAY_BUFFER                        0x8893
+#define LOCAL_GL_ELEMENT_ARRAY_BUFFER_ARB                    0x8893
+#define LOCAL_GL_ELEMENT_ARRAY_BUFFER_BINDING                0x8895
+#define LOCAL_GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB            0x8895
+#define LOCAL_GL_ELEMENT_ARRAY_LENGTH_NV                     0x8F33
+#define LOCAL_GL_ELEMENT_ARRAY_POINTER_APPLE                 0x8A0E
+#define LOCAL_GL_ELEMENT_ARRAY_POINTER_ATI                   0x876A
+#define LOCAL_GL_ELEMENT_ARRAY_TYPE_APPLE                    0x8A0D
+#define LOCAL_GL_ELEMENT_ARRAY_TYPE_ATI                      0x8769
+#define LOCAL_GL_ELEMENT_ARRAY_UNIFIED_NV                    0x8F1F
+#define LOCAL_GL_EMBOSS_CONSTANT_NV                          0x855E
+#define LOCAL_GL_EMBOSS_LIGHT_NV                             0x855D
+#define LOCAL_GL_EMBOSS_MAP_NV                               0x855F
+#define LOCAL_GL_EMISSION                                    0x1600
+#define LOCAL_GL_ENABLE_BIT                                  0x00002000
+#define LOCAL_GL_EQUAL                                       0x0202
+#define LOCAL_GL_EQUIV                                       0x1509
+#define LOCAL_GL_ETC1_RGB8_OES                               0x8D64
+#define LOCAL_GL_ETC1_SRGB8_NV                               0x88EE
+#define LOCAL_GL_EVAL_2D_NV                                  0x86C0
+#define LOCAL_GL_EVAL_BIT                                    0x00010000
+#define LOCAL_GL_EVAL_FRACTIONAL_TESSELLATION_NV             0x86C5
+#define LOCAL_GL_EVAL_TRIANGULAR_2D_NV                       0x86C1
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB0_NV                      0x86C6
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB10_NV                     0x86D0
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB11_NV                     0x86D1
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB12_NV                     0x86D2
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB13_NV                     0x86D3
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB14_NV                     0x86D4
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB15_NV                     0x86D5
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB1_NV                      0x86C7
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB2_NV                      0x86C8
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB3_NV                      0x86C9
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB4_NV                      0x86CA
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB5_NV                      0x86CB
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB6_NV                      0x86CC
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB7_NV                      0x86CD
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB8_NV                      0x86CE
+#define LOCAL_GL_EVAL_VERTEX_ATTRIB9_NV                      0x86CF
+#define LOCAL_GL_EXCLUSION                                   0x92A0
+#define LOCAL_GL_EXCLUSION_KHR                               0x92A0
+#define LOCAL_GL_EXCLUSION_NV                                0x92A0
+#define LOCAL_GL_EXCLUSIVE_EXT                               0x8F11
+#define LOCAL_GL_EXP                                         0x0800
+#define LOCAL_GL_EXP2                                        0x0801
+#define LOCAL_GL_EXPAND_NEGATE_NV                            0x8539
+#define LOCAL_GL_EXPAND_NORMAL_NV                            0x8538
+#define LOCAL_GL_EXTENSIONS                                  0x1F03
+#define LOCAL_GL_EXTERNAL_STORAGE_BIT_NVX                    0x2000
+#define LOCAL_GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD          0x9160
+#define LOCAL_GL_EYE_DISTANCE_TO_LINE_SGIS                   0x81F2
+#define LOCAL_GL_EYE_DISTANCE_TO_POINT_SGIS                  0x81F0
+#define LOCAL_GL_EYE_LINEAR                                  0x2400
+#define LOCAL_GL_EYE_LINEAR_NV                               0x2400
+#define LOCAL_GL_EYE_LINE_SGIS                               0x81F6
+#define LOCAL_GL_EYE_PLANE                                   0x2502
+#define LOCAL_GL_EYE_PLANE_ABSOLUTE_NV                       0x855C
+#define LOCAL_GL_EYE_POINT_SGIS                              0x81F4
+#define LOCAL_GL_EYE_RADIAL_NV                               0x855B
+#define LOCAL_GL_E_TIMES_F_NV                                0x8531
+#define LOCAL_GL_FACTOR_ALPHA_MODULATE_IMG                   0x8C07
+#define LOCAL_GL_FACTOR_MAX_AMD                              0x901D
+#define LOCAL_GL_FACTOR_MIN_AMD                              0x901C
+#define LOCAL_GL_FAILURE_NV                                  0x9030
+#define LOCAL_GL_FALSE                                       0
+#define LOCAL_GL_FASTEST                                     0x1101
+#define LOCAL_GL_FEEDBACK                                    0x1C01
+#define LOCAL_GL_FEEDBACK_BUFFER_POINTER                     0x0DF0
+#define LOCAL_GL_FEEDBACK_BUFFER_SIZE                        0x0DF1
+#define LOCAL_GL_FEEDBACK_BUFFER_TYPE                        0x0DF2
+#define LOCAL_GL_FENCE_APPLE                                 0x8A0B
+#define LOCAL_GL_FENCE_CONDITION_NV                          0x84F4
+#define LOCAL_GL_FENCE_STATUS_NV                             0x84F3
+#define LOCAL_GL_FETCH_PER_SAMPLE_ARM                        0x8F65
+#define LOCAL_GL_FIELDS_NV                                   0x8E27
+#define LOCAL_GL_FIELD_LOWER_NV                              0x9023
+#define LOCAL_GL_FIELD_UPPER_NV                              0x9022
+#define LOCAL_GL_FILE_NAME_NV                                0x9074
+#define LOCAL_GL_FILL                                        0x1B02
+#define LOCAL_GL_FILL_NV                                     0x1B02
+#define LOCAL_GL_FILL_RECTANGLE_NV                           0x933C
+#define LOCAL_GL_FILTER                                      0x829A
+#define LOCAL_GL_FILTER4_SGIS                                0x8146
+#define LOCAL_GL_FIRST_TO_REST_NV                            0x90AF
+#define LOCAL_GL_FIRST_VERTEX_CONVENTION                     0x8E4D
+#define LOCAL_GL_FIRST_VERTEX_CONVENTION_EXT                 0x8E4D
+#define LOCAL_GL_FIRST_VERTEX_CONVENTION_OES                 0x8E4D
+#define LOCAL_GL_FIXED                                       0x140C
+#define LOCAL_GL_FIXED_OES                                   0x140C
+#define LOCAL_GL_FIXED_ONLY                                  0x891D
+#define LOCAL_GL_FIXED_ONLY_ARB                              0x891D
+#define LOCAL_GL_FLAT                                        0x1D00
+#define LOCAL_GL_FLOAT                                       0x1406
+#define LOCAL_GL_FLOAT16_MAT2_AMD                            0x91C5
+#define LOCAL_GL_FLOAT16_MAT2x3_AMD                          0x91C8
+#define LOCAL_GL_FLOAT16_MAT2x4_AMD                          0x91C9
+#define LOCAL_GL_FLOAT16_MAT3_AMD                            0x91C6
+#define LOCAL_GL_FLOAT16_MAT3x2_AMD                          0x91CA
+#define LOCAL_GL_FLOAT16_MAT3x4_AMD                          0x91CB
+#define LOCAL_GL_FLOAT16_MAT4_AMD                            0x91C7
+#define LOCAL_GL_FLOAT16_MAT4x2_AMD                          0x91CC
+#define LOCAL_GL_FLOAT16_MAT4x3_AMD                          0x91CD
+#define LOCAL_GL_FLOAT16_NV                                  0x8FF8
+#define LOCAL_GL_FLOAT16_VEC2_NV                             0x8FF9
+#define LOCAL_GL_FLOAT16_VEC3_NV                             0x8FFA
+#define LOCAL_GL_FLOAT16_VEC4_NV                             0x8FFB
+#define LOCAL_GL_FLOAT_32_UNSIGNED_INT_24_8_REV              0x8DAD
+#define LOCAL_GL_FLOAT_32_UNSIGNED_INT_24_8_REV_NV           0x8DAD
+#define LOCAL_GL_FLOAT_CLEAR_COLOR_VALUE_NV                  0x888D
+#define LOCAL_GL_FLOAT_MAT2                                  0x8B5A
+#define LOCAL_GL_FLOAT_MAT2_ARB                              0x8B5A
+#define LOCAL_GL_FLOAT_MAT2x3                                0x8B65
+#define LOCAL_GL_FLOAT_MAT2x3_NV                             0x8B65
+#define LOCAL_GL_FLOAT_MAT2x4                                0x8B66
+#define LOCAL_GL_FLOAT_MAT2x4_NV                             0x8B66
+#define LOCAL_GL_FLOAT_MAT3                                  0x8B5B
+#define LOCAL_GL_FLOAT_MAT3_ARB                              0x8B5B
+#define LOCAL_GL_FLOAT_MAT3x2                                0x8B67
+#define LOCAL_GL_FLOAT_MAT3x2_NV                             0x8B67
+#define LOCAL_GL_FLOAT_MAT3x4                                0x8B68
+#define LOCAL_GL_FLOAT_MAT3x4_NV                             0x8B68
+#define LOCAL_GL_FLOAT_MAT4                                  0x8B5C
+#define LOCAL_GL_FLOAT_MAT4_ARB                              0x8B5C
+#define LOCAL_GL_FLOAT_MAT4x2                                0x8B69
+#define LOCAL_GL_FLOAT_MAT4x2_NV                             0x8B69
+#define LOCAL_GL_FLOAT_MAT4x3                                0x8B6A
+#define LOCAL_GL_FLOAT_MAT4x3_NV                             0x8B6A
+#define LOCAL_GL_FLOAT_R16_NV                                0x8884
+#define LOCAL_GL_FLOAT_R32_NV                                0x8885
+#define LOCAL_GL_FLOAT_RG16_NV                               0x8886
+#define LOCAL_GL_FLOAT_RG32_NV                               0x8887
+#define LOCAL_GL_FLOAT_RGB16_NV                              0x8888
+#define LOCAL_GL_FLOAT_RGB32_NV                              0x8889
+#define LOCAL_GL_FLOAT_RGBA16_NV                             0x888A
+#define LOCAL_GL_FLOAT_RGBA32_NV                             0x888B
+#define LOCAL_GL_FLOAT_RGBA_MODE_NV                          0x888E
+#define LOCAL_GL_FLOAT_RGBA_NV                               0x8883
+#define LOCAL_GL_FLOAT_RGB_NV                                0x8882
+#define LOCAL_GL_FLOAT_RG_NV                                 0x8881
+#define LOCAL_GL_FLOAT_R_NV                                  0x8880
+#define LOCAL_GL_FLOAT_VEC2                                  0x8B50
+#define LOCAL_GL_FLOAT_VEC2_ARB                              0x8B50
+#define LOCAL_GL_FLOAT_VEC3                                  0x8B51
+#define LOCAL_GL_FLOAT_VEC3_ARB                              0x8B51
+#define LOCAL_GL_FLOAT_VEC4                                  0x8B52
+#define LOCAL_GL_FLOAT_VEC4_ARB                              0x8B52
+#define LOCAL_GL_FOG                                         0x0B60
+#define LOCAL_GL_FOG_BIT                                     0x00000080
+#define LOCAL_GL_FOG_COLOR                                   0x0B66
+#define LOCAL_GL_FOG_COORD                                   0x8451
+#define LOCAL_GL_FOG_COORDINATE                              0x8451
+#define LOCAL_GL_FOG_COORDINATE_ARRAY                        0x8457
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING         0x889D
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB     0x889D
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_EXT                    0x8457
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_LIST_IBM               103076
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_LIST_STRIDE_IBM        103086
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_POINTER                0x8456
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_POINTER_EXT            0x8456
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_STRIDE                 0x8455
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_STRIDE_EXT             0x8455
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_TYPE                   0x8454
+#define LOCAL_GL_FOG_COORDINATE_ARRAY_TYPE_EXT               0x8454
+#define LOCAL_GL_FOG_COORDINATE_EXT                          0x8451
+#define LOCAL_GL_FOG_COORDINATE_SOURCE                       0x8450
+#define LOCAL_GL_FOG_COORDINATE_SOURCE_EXT                   0x8450
+#define LOCAL_GL_FOG_COORD_ARRAY                             0x8457
+#define LOCAL_GL_FOG_COORD_ARRAY_ADDRESS_NV                  0x8F28
+#define LOCAL_GL_FOG_COORD_ARRAY_BUFFER_BINDING              0x889D
+#define LOCAL_GL_FOG_COORD_ARRAY_LENGTH_NV                   0x8F32
+#define LOCAL_GL_FOG_COORD_ARRAY_POINTER                     0x8456
+#define LOCAL_GL_FOG_COORD_ARRAY_STRIDE                      0x8455
+#define LOCAL_GL_FOG_COORD_ARRAY_TYPE                        0x8454
+#define LOCAL_GL_FOG_COORD_SRC                               0x8450
+#define LOCAL_GL_FOG_DENSITY                                 0x0B62
+#define LOCAL_GL_FOG_DISTANCE_MODE_NV                        0x855A
+#define LOCAL_GL_FOG_END                                     0x0B64
+#define LOCAL_GL_FOG_FUNC_POINTS_SGIS                        0x812B
+#define LOCAL_GL_FOG_FUNC_SGIS                               0x812A
+#define LOCAL_GL_FOG_HINT                                    0x0C54
+#define LOCAL_GL_FOG_INDEX                                   0x0B61
+#define LOCAL_GL_FOG_MODE                                    0x0B65
+#define LOCAL_GL_FOG_OFFSET_SGIX                             0x8198
+#define LOCAL_GL_FOG_OFFSET_VALUE_SGIX                       0x8199
+#define LOCAL_GL_FOG_SPECULAR_TEXTURE_WIN                    0x80EC
+#define LOCAL_GL_FOG_START                                   0x0B63
+#define LOCAL_GL_FONT_ASCENDER_BIT_NV                        0x00200000
+#define LOCAL_GL_FONT_DESCENDER_BIT_NV                       0x00400000
+#define LOCAL_GL_FONT_GLYPHS_AVAILABLE_NV                    0x9368
+#define LOCAL_GL_FONT_HAS_KERNING_BIT_NV                     0x10000000
+#define LOCAL_GL_FONT_HEIGHT_BIT_NV                          0x00800000
+#define LOCAL_GL_FONT_MAX_ADVANCE_HEIGHT_BIT_NV              0x02000000
+#define LOCAL_GL_FONT_MAX_ADVANCE_WIDTH_BIT_NV               0x01000000
+#define LOCAL_GL_FONT_NUM_GLYPH_INDICES_BIT_NV               0x20000000
+#define LOCAL_GL_FONT_TARGET_UNAVAILABLE_NV                  0x9369
+#define LOCAL_GL_FONT_UNAVAILABLE_NV                         0x936A
+#define LOCAL_GL_FONT_UNDERLINE_POSITION_BIT_NV              0x04000000
+#define LOCAL_GL_FONT_UNDERLINE_THICKNESS_BIT_NV             0x08000000
+#define LOCAL_GL_FONT_UNINTELLIGIBLE_NV                      0x936B
+#define LOCAL_GL_FONT_UNITS_PER_EM_BIT_NV                    0x00100000
+#define LOCAL_GL_FONT_X_MAX_BOUNDS_BIT_NV                    0x00040000
+#define LOCAL_GL_FONT_X_MIN_BOUNDS_BIT_NV                    0x00010000
+#define LOCAL_GL_FONT_Y_MAX_BOUNDS_BIT_NV                    0x00080000
+#define LOCAL_GL_FONT_Y_MIN_BOUNDS_BIT_NV                    0x00020000
+#define LOCAL_GL_FORCE_BLUE_TO_ONE_NV                        0x8860
+#define LOCAL_GL_FORMAT_SUBSAMPLE_244_244_OML                0x8983
+#define LOCAL_GL_FORMAT_SUBSAMPLE_24_24_OML                  0x8982
+#define LOCAL_GL_FOVEATION_ENABLE_BIT_QCOM                   0x00000001
+#define LOCAL_GL_FOVEATION_SCALED_BIN_METHOD_BIT_QCOM        0x00000002
+#define LOCAL_GL_FOVEATION_SUBSAMPLED_LAYOUT_METHOD_BIT_QCOM 0x00000004
+#define LOCAL_GL_FRACTIONAL_EVEN                             0x8E7C
+#define LOCAL_GL_FRACTIONAL_EVEN_EXT                         0x8E7C
+#define LOCAL_GL_FRACTIONAL_EVEN_OES                         0x8E7C
+#define LOCAL_GL_FRACTIONAL_ODD                              0x8E7B
+#define LOCAL_GL_FRACTIONAL_ODD_EXT                          0x8E7B
+#define LOCAL_GL_FRACTIONAL_ODD_OES                          0x8E7B
+#define LOCAL_GL_FRAGMENTS_INSTRUMENT_COUNTERS_SGIX          0x8314
+#define LOCAL_GL_FRAGMENTS_INSTRUMENT_MAX_SGIX               0x8315
+#define LOCAL_GL_FRAGMENTS_INSTRUMENT_SGIX                   0x8313
+#define LOCAL_GL_FRAGMENT_ALPHA_MODULATE_IMG                 0x8C08
+#define LOCAL_GL_FRAGMENT_COLOR_EXT                          0x834C
+#define LOCAL_GL_FRAGMENT_COLOR_MATERIAL_FACE_SGIX           0x8402
+#define LOCAL_GL_FRAGMENT_COLOR_MATERIAL_PARAMETER_SGIX      0x8403
+#define LOCAL_GL_FRAGMENT_COLOR_MATERIAL_SGIX                0x8401
+#define LOCAL_GL_FRAGMENT_COVERAGE_COLOR_NV                  0x92DE
+#define LOCAL_GL_FRAGMENT_COVERAGE_TO_COLOR_NV               0x92DD
+#define LOCAL_GL_FRAGMENT_DEPTH                              0x8452
+#define LOCAL_GL_FRAGMENT_DEPTH_EXT                          0x8452
+#define LOCAL_GL_FRAGMENT_INPUT_NV                           0x936D
+#define LOCAL_GL_FRAGMENT_INTERPOLATION_OFFSET_BITS          0x8E5D
+#define LOCAL_GL_FRAGMENT_INTERPOLATION_OFFSET_BITS_OES      0x8E5D
+#define LOCAL_GL_FRAGMENT_LIGHT0_SGIX                        0x840C
+#define LOCAL_GL_FRAGMENT_LIGHT1_SGIX                        0x840D
+#define LOCAL_GL_FRAGMENT_LIGHT2_SGIX                        0x840E
+#define LOCAL_GL_FRAGMENT_LIGHT3_SGIX                        0x840F
+#define LOCAL_GL_FRAGMENT_LIGHT4_SGIX                        0x8410
+#define LOCAL_GL_FRAGMENT_LIGHT5_SGIX                        0x8411
+#define LOCAL_GL_FRAGMENT_LIGHT6_SGIX                        0x8412
+#define LOCAL_GL_FRAGMENT_LIGHT7_SGIX                        0x8413
+#define LOCAL_GL_FRAGMENT_LIGHTING_SGIX                      0x8400
+#define LOCAL_GL_FRAGMENT_LIGHT_MODEL_AMBIENT_SGIX           0x840A
+#define LOCAL_GL_FRAGMENT_LIGHT_MODEL_LOCAL_VIEWER_SGIX      0x8408
+#define LOCAL_GL_FRAGMENT_LIGHT_MODEL_NORMAL_INTERPOLATION_SGIX      0x840B
+#define LOCAL_GL_FRAGMENT_LIGHT_MODEL_TWO_SIDE_SGIX          0x8409
+#define LOCAL_GL_FRAGMENT_MATERIAL_EXT                       0x8349
+#define LOCAL_GL_FRAGMENT_NORMAL_EXT                         0x834A
+#define LOCAL_GL_FRAGMENT_PROGRAM_ARB                        0x8804
+#define LOCAL_GL_FRAGMENT_PROGRAM_BINDING_NV                 0x8873
+#define LOCAL_GL_FRAGMENT_PROGRAM_CALLBACK_DATA_MESA         0x8BB3
+#define LOCAL_GL_FRAGMENT_PROGRAM_CALLBACK_FUNC_MESA         0x8BB2
+#define LOCAL_GL_FRAGMENT_PROGRAM_CALLBACK_MESA              0x8BB1
+#define LOCAL_GL_FRAGMENT_PROGRAM_INTERPOLATION_OFFSET_BITS_NV       0x8E5D
+#define LOCAL_GL_FRAGMENT_PROGRAM_NV                         0x8870
+#define LOCAL_GL_FRAGMENT_PROGRAM_PARAMETER_BUFFER_NV        0x8DA4
+#define LOCAL_GL_FRAGMENT_PROGRAM_POSITION_MESA              0x8BB0
+#define LOCAL_GL_FRAGMENT_SHADER                             0x8B30
+#define LOCAL_GL_FRAGMENT_SHADER_ARB                         0x8B30
+#define LOCAL_GL_FRAGMENT_SHADER_ATI                         0x8920
+#define LOCAL_GL_FRAGMENT_SHADER_BIT                         0x00000002
+#define LOCAL_GL_FRAGMENT_SHADER_BIT_EXT                     0x00000002
+#define LOCAL_GL_FRAGMENT_SHADER_DERIVATIVE_HINT             0x8B8B
+#define LOCAL_GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB         0x8B8B
+#define LOCAL_GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES         0x8B8B
+#define LOCAL_GL_FRAGMENT_SHADER_DISCARDS_SAMPLES_EXT        0x8A52
+#define LOCAL_GL_FRAGMENT_SHADER_FRAMEBUFFER_FETCH_MRT_ARM   0x8F66
+#define LOCAL_GL_FRAGMENT_SHADER_INVOCATIONS                 0x82F4
+#define LOCAL_GL_FRAGMENT_SHADER_INVOCATIONS_ARB             0x82F4
+#define LOCAL_GL_FRAGMENT_SUBROUTINE                         0x92EC
+#define LOCAL_GL_FRAGMENT_SUBROUTINE_UNIFORM                 0x92F2
+#define LOCAL_GL_FRAGMENT_TEXTURE                            0x829F
+#define LOCAL_GL_FRAMEBUFFER                                 0x8D40
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE           0x8215
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_ANGLE                0x93A3
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE            0x8214
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING       0x8210
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT   0x8210
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE       0x8211
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT   0x8211
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE           0x8216
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE           0x8213
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_LAYERED              0x8DA7
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_LAYERED_ARB          0x8DA7
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT          0x8DA7
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_LAYERED_OES          0x8DA7
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME          0x8CD1
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT      0x8CD1
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_OES      0x8CD1
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE          0x8CD0
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT      0x8CD0
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_OES      0x8CD0
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE             0x8212
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE         0x8217
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT       0x8CD4
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_OES       0x8CD4
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_BASE_VIEW_INDEX_OVR  0x9632
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE        0x8CD3
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT    0x8CD3
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_OES    0x8CD3
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER        0x8CD4
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER_EXT    0x8CD4
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL        0x8CD2
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT    0x8CD2
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_OES    0x8CD2
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_NUM_VIEWS_OVR        0x9630
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SAMPLES_EXT  0x8D6C
+#define LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SCALE_IMG    0x913F
+#define LOCAL_GL_FRAMEBUFFER_BARRIER_BIT                     0x00000400
+#define LOCAL_GL_FRAMEBUFFER_BARRIER_BIT_EXT                 0x00000400
+#define LOCAL_GL_FRAMEBUFFER_BINDING                         0x8CA6
+#define LOCAL_GL_FRAMEBUFFER_BINDING_ANGLE                   0x8CA6
+#define LOCAL_GL_FRAMEBUFFER_BINDING_EXT                     0x8CA6
+#define LOCAL_GL_FRAMEBUFFER_BINDING_OES                     0x8CA6
+#define LOCAL_GL_FRAMEBUFFER_BLEND                           0x828B
+#define LOCAL_GL_FRAMEBUFFER_COMPLETE                        0x8CD5
+#define LOCAL_GL_FRAMEBUFFER_COMPLETE_EXT                    0x8CD5
+#define LOCAL_GL_FRAMEBUFFER_COMPLETE_OES                    0x8CD5
+#define LOCAL_GL_FRAMEBUFFER_DEFAULT                         0x8218
+#define LOCAL_GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS  0x9314
+#define LOCAL_GL_FRAMEBUFFER_DEFAULT_HEIGHT                  0x9311
+#define LOCAL_GL_FRAMEBUFFER_DEFAULT_LAYERS                  0x9312
+#define LOCAL_GL_FRAMEBUFFER_DEFAULT_LAYERS_EXT              0x9312
+#define LOCAL_GL_FRAMEBUFFER_DEFAULT_LAYERS_OES              0x9312
+#define LOCAL_GL_FRAMEBUFFER_DEFAULT_SAMPLES                 0x9313
+#define LOCAL_GL_FRAMEBUFFER_DEFAULT_WIDTH                   0x9310
+#define LOCAL_GL_FRAMEBUFFER_EXT                             0x8D40
+#define LOCAL_GL_FRAMEBUFFER_FETCH_NONCOHERENT_QCOM          0x96A2
+#define LOCAL_GL_FRAMEBUFFER_FLIP_X_MESA                     0x8BBC
+#define LOCAL_GL_FRAMEBUFFER_FLIP_Y_MESA                     0x8BBB
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT           0x8CD6
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT       0x8CD6
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES       0x8CD6
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS           0x8CD9
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT       0x8CD9
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_OES       0x8CD9
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER          0x8CDB
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT      0x8CDB
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_OES      0x8CDB
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT          0x8CDA
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_FORMATS_OES          0x8CDA
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_FOVEATION_QCOM       0x8BFF
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_INSUFFICIENT_SHADER_COMBINED_LOCAL_STORAGE_EXT       0x9652
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_ARB      0x8DA9
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_EXT      0x8DA9
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS        0x8DA8
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_ARB    0x8DA8
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT    0x8DA8
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_OES    0x8DA8
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT   0x8CD7
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT       0x8CD7
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_OES       0x8CD7
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE          0x8D56
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_AND_DOWNSAMPLE_IMG       0x913C
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE    0x8D56
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_APPLE    0x8D56
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT      0x8D56
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_IMG      0x9134
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_NV       0x8D56
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER          0x8CDC
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT      0x8CDC
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_OES      0x8CDC
+#define LOCAL_GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_OVR     0x9633
+#define LOCAL_GL_FRAMEBUFFER_OES                             0x8D40
+#define LOCAL_GL_FRAMEBUFFER_PROGRAMMABLE_SAMPLE_LOCATIONS_ARB       0x9342
+#define LOCAL_GL_FRAMEBUFFER_PROGRAMMABLE_SAMPLE_LOCATIONS_NV        0x9342
+#define LOCAL_GL_FRAMEBUFFER_RENDERABLE                      0x8289
+#define LOCAL_GL_FRAMEBUFFER_RENDERABLE_LAYERED              0x828A
+#define LOCAL_GL_FRAMEBUFFER_SAMPLE_LOCATION_PIXEL_GRID_ARB  0x9343
+#define LOCAL_GL_FRAMEBUFFER_SAMPLE_LOCATION_PIXEL_GRID_NV   0x9343
+#define LOCAL_GL_FRAMEBUFFER_SRGB                            0x8DB9
+#define LOCAL_GL_FRAMEBUFFER_SRGB_CAPABLE_EXT                0x8DBA
+#define LOCAL_GL_FRAMEBUFFER_SRGB_EXT                        0x8DB9
+#define LOCAL_GL_FRAMEBUFFER_SWAP_XY_MESA                    0x8BBD
+#define LOCAL_GL_FRAMEBUFFER_UNDEFINED                       0x8219
+#define LOCAL_GL_FRAMEBUFFER_UNDEFINED_OES                   0x8219
+#define LOCAL_GL_FRAMEBUFFER_UNSUPPORTED                     0x8CDD
+#define LOCAL_GL_FRAMEBUFFER_UNSUPPORTED_EXT                 0x8CDD
+#define LOCAL_GL_FRAMEBUFFER_UNSUPPORTED_OES                 0x8CDD
+#define LOCAL_GL_FRAMEZOOM_FACTOR_SGIX                       0x818C
+#define LOCAL_GL_FRAMEZOOM_SGIX                              0x818B
+#define LOCAL_GL_FRAME_NV                                    0x8E26
+#define LOCAL_GL_FRONT                                       0x0404
+#define LOCAL_GL_FRONT_AND_BACK                              0x0408
+#define LOCAL_GL_FRONT_FACE                                  0x0B46
+#define LOCAL_GL_FRONT_FACE_COMMAND_NV                       0x0012
+#define LOCAL_GL_FRONT_LEFT                                  0x0400
+#define LOCAL_GL_FRONT_RIGHT                                 0x0401
+#define LOCAL_GL_FULL_RANGE_EXT                              0x87E1
+#define LOCAL_GL_FULL_STIPPLE_HINT_PGI                       0x1A219
+#define LOCAL_GL_FULL_SUPPORT                                0x82B7
+#define LOCAL_GL_FUNC_ADD                                    0x8006
+#define LOCAL_GL_FUNC_ADD_EXT                                0x8006
+#define LOCAL_GL_FUNC_ADD_OES                                0x8006
+#define LOCAL_GL_FUNC_REVERSE_SUBTRACT                       0x800B
+#define LOCAL_GL_FUNC_REVERSE_SUBTRACT_EXT                   0x800B
+#define LOCAL_GL_FUNC_REVERSE_SUBTRACT_OES                   0x800B
+#define LOCAL_GL_FUNC_SUBTRACT                               0x800A
+#define LOCAL_GL_FUNC_SUBTRACT_EXT                           0x800A
+#define LOCAL_GL_FUNC_SUBTRACT_OES                           0x800A
+#define LOCAL_GL_GCCSO_SHADER_BINARY_FJ                      0x9260
+#define LOCAL_GL_GENERATE_MIPMAP                             0x8191
+#define LOCAL_GL_GENERATE_MIPMAP_HINT                        0x8192
+#define LOCAL_GL_GENERATE_MIPMAP_HINT_SGIS                   0x8192
+#define LOCAL_GL_GENERATE_MIPMAP_SGIS                        0x8191
+#define LOCAL_GL_GENERIC_ATTRIB_NV                           0x8C7D
+#define LOCAL_GL_GEOMETRY_DEFORMATION_BIT_SGIX               0x00000002
+#define LOCAL_GL_GEOMETRY_DEFORMATION_SGIX                   0x8194
+#define LOCAL_GL_GEOMETRY_INPUT_TYPE                         0x8917
+#define LOCAL_GL_GEOMETRY_INPUT_TYPE_ARB                     0x8DDB
+#define LOCAL_GL_GEOMETRY_INPUT_TYPE_EXT                     0x8DDB
+#define LOCAL_GL_GEOMETRY_LINKED_INPUT_TYPE_EXT              0x8917
+#define LOCAL_GL_GEOMETRY_LINKED_INPUT_TYPE_OES              0x8917
+#define LOCAL_GL_GEOMETRY_LINKED_OUTPUT_TYPE_EXT             0x8918
+#define LOCAL_GL_GEOMETRY_LINKED_OUTPUT_TYPE_OES             0x8918
+#define LOCAL_GL_GEOMETRY_LINKED_VERTICES_OUT_EXT            0x8916
+#define LOCAL_GL_GEOMETRY_LINKED_VERTICES_OUT_OES            0x8916
+#define LOCAL_GL_GEOMETRY_OUTPUT_TYPE                        0x8918
+#define LOCAL_GL_GEOMETRY_OUTPUT_TYPE_ARB                    0x8DDC
+#define LOCAL_GL_GEOMETRY_OUTPUT_TYPE_EXT                    0x8DDC
+#define LOCAL_GL_GEOMETRY_PROGRAM_NV                         0x8C26
+#define LOCAL_GL_GEOMETRY_PROGRAM_PARAMETER_BUFFER_NV        0x8DA3
+#define LOCAL_GL_GEOMETRY_SHADER                             0x8DD9
+#define LOCAL_GL_GEOMETRY_SHADER_ARB                         0x8DD9
+#define LOCAL_GL_GEOMETRY_SHADER_BIT                         0x00000004
+#define LOCAL_GL_GEOMETRY_SHADER_BIT_EXT                     0x00000004
+#define LOCAL_GL_GEOMETRY_SHADER_BIT_OES                     0x00000004
+#define LOCAL_GL_GEOMETRY_SHADER_EXT                         0x8DD9
+#define LOCAL_GL_GEOMETRY_SHADER_INVOCATIONS                 0x887F
+#define LOCAL_GL_GEOMETRY_SHADER_INVOCATIONS_EXT             0x887F
+#define LOCAL_GL_GEOMETRY_SHADER_INVOCATIONS_OES             0x887F
+#define LOCAL_GL_GEOMETRY_SHADER_OES                         0x8DD9
+#define LOCAL_GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED          0x82F3
+#define LOCAL_GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB      0x82F3
+#define LOCAL_GL_GEOMETRY_SUBROUTINE                         0x92EB
+#define LOCAL_GL_GEOMETRY_SUBROUTINE_UNIFORM                 0x92F1
+#define LOCAL_GL_GEOMETRY_TEXTURE                            0x829E
+#define LOCAL_GL_GEOMETRY_VERTICES_OUT                       0x8916
+#define LOCAL_GL_GEOMETRY_VERTICES_OUT_ARB                   0x8DDA
+#define LOCAL_GL_GEOMETRY_VERTICES_OUT_EXT                   0x8DDA
+#define LOCAL_GL_GEQUAL                                      0x0206
+#define LOCAL_GL_GET_TEXTURE_IMAGE_FORMAT                    0x8291
+#define LOCAL_GL_GET_TEXTURE_IMAGE_TYPE                      0x8292
+#define LOCAL_GL_GLOBAL_ALPHA_FACTOR_SUN                     0x81DA
+#define LOCAL_GL_GLOBAL_ALPHA_SUN                            0x81D9
+#define LOCAL_GL_GLYPH_HAS_KERNING_BIT_NV                    0x100
+#define LOCAL_GL_GLYPH_HEIGHT_BIT_NV                         0x02
+#define LOCAL_GL_GLYPH_HORIZONTAL_BEARING_ADVANCE_BIT_NV     0x10
+#define LOCAL_GL_GLYPH_HORIZONTAL_BEARING_X_BIT_NV           0x04
+#define LOCAL_GL_GLYPH_HORIZONTAL_BEARING_Y_BIT_NV           0x08
+#define LOCAL_GL_GLYPH_VERTICAL_BEARING_ADVANCE_BIT_NV       0x80
+#define LOCAL_GL_GLYPH_VERTICAL_BEARING_X_BIT_NV             0x20
+#define LOCAL_GL_GLYPH_VERTICAL_BEARING_Y_BIT_NV             0x40
+#define LOCAL_GL_GLYPH_WIDTH_BIT_NV                          0x01
+#define LOCAL_GL_GPU_ADDRESS_NV                              0x8F34
+#define LOCAL_GL_GPU_DISJOINT_EXT                            0x8FBB
+#define LOCAL_GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX        0x9049
+#define LOCAL_GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX        0x9047
+#define LOCAL_GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX          0x904B
+#define LOCAL_GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX          0x904A
+#define LOCAL_GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX  0x9048
+#define LOCAL_GL_GPU_OPTIMIZED_QCOM                          0x8FB2
+#define LOCAL_GL_GREATER                                     0x0204
+#define LOCAL_GL_GREEN                                       0x1904
+#define LOCAL_GL_GREEN_BIAS                                  0x0D19
+#define LOCAL_GL_GREEN_BITS                                  0x0D53
+#define LOCAL_GL_GREEN_BIT_ATI                               0x00000002
+#define LOCAL_GL_GREEN_INTEGER                               0x8D95
+#define LOCAL_GL_GREEN_INTEGER_EXT                           0x8D95
+#define LOCAL_GL_GREEN_MAX_CLAMP_INGR                        0x8565
+#define LOCAL_GL_GREEN_MIN_CLAMP_INGR                        0x8561
+#define LOCAL_GL_GREEN_NV                                    0x1904
+#define LOCAL_GL_GREEN_SCALE                                 0x0D18
+#define LOCAL_GL_GS_PROGRAM_BINARY_MTK                       0x9641
+#define LOCAL_GL_GS_SHADER_BINARY_MTK                        0x9640
+#define LOCAL_GL_GUILTY_CONTEXT_RESET                        0x8253
+#define LOCAL_GL_GUILTY_CONTEXT_RESET_ARB                    0x8253
+#define LOCAL_GL_GUILTY_CONTEXT_RESET_EXT                    0x8253
+#define LOCAL_GL_GUILTY_CONTEXT_RESET_KHR                    0x8253
+#define LOCAL_GL_HALF_APPLE                                  0x140B
+#define LOCAL_GL_HALF_BIAS_NEGATE_NV                         0x853B
+#define LOCAL_GL_HALF_BIAS_NORMAL_NV                         0x853A
+#define LOCAL_GL_HALF_BIT_ATI                                0x00000008
+#define LOCAL_GL_HALF_FLOAT                                  0x140B
+#define LOCAL_GL_HALF_FLOAT_ARB                              0x140B
+#define LOCAL_GL_HALF_FLOAT_NV                               0x140B
+#define LOCAL_GL_HALF_FLOAT_OES                              0x8D61
+#define LOCAL_GL_HANDLE_TYPE_D3D11_IMAGE_EXT                 0x958B
+#define LOCAL_GL_HANDLE_TYPE_D3D11_IMAGE_KMT_EXT             0x958C
+#define LOCAL_GL_HANDLE_TYPE_D3D12_FENCE_EXT                 0x9594
+#define LOCAL_GL_HANDLE_TYPE_D3D12_RESOURCE_EXT              0x958A
+#define LOCAL_GL_HANDLE_TYPE_D3D12_TILEPOOL_EXT              0x9589
+#define LOCAL_GL_HANDLE_TYPE_OPAQUE_FD_EXT                   0x9586
+#define LOCAL_GL_HANDLE_TYPE_OPAQUE_WIN32_EXT                0x9587
+#define LOCAL_GL_HANDLE_TYPE_OPAQUE_WIN32_KMT_EXT            0x9588
+#define LOCAL_GL_HARDLIGHT                                   0x929B
+#define LOCAL_GL_HARDLIGHT_KHR                               0x929B
+#define LOCAL_GL_HARDLIGHT_NV                                0x929B
+#define LOCAL_GL_HARDMIX_NV                                  0x92A9
+#define LOCAL_GL_HIGH_FLOAT                                  0x8DF2
+#define LOCAL_GL_HIGH_INT                                    0x8DF5
+#define LOCAL_GL_HILO16_NV                                   0x86F8
+#define LOCAL_GL_HILO8_NV                                    0x885E
+#define LOCAL_GL_HILO_NV                                     0x86F4
+#define LOCAL_GL_HINT_BIT                                    0x00008000
+#define LOCAL_GL_HISTOGRAM                                   0x8024
+#define LOCAL_GL_HISTOGRAM_ALPHA_SIZE                        0x802B
+#define LOCAL_GL_HISTOGRAM_ALPHA_SIZE_EXT                    0x802B
+#define LOCAL_GL_HISTOGRAM_BLUE_SIZE                         0x802A
+#define LOCAL_GL_HISTOGRAM_BLUE_SIZE_EXT                     0x802A
+#define LOCAL_GL_HISTOGRAM_EXT                               0x8024
+#define LOCAL_GL_HISTOGRAM_FORMAT                            0x8027
+#define LOCAL_GL_HISTOGRAM_FORMAT_EXT                        0x8027
+#define LOCAL_GL_HISTOGRAM_GREEN_SIZE                        0x8029
+#define LOCAL_GL_HISTOGRAM_GREEN_SIZE_EXT                    0x8029
+#define LOCAL_GL_HISTOGRAM_LUMINANCE_SIZE                    0x802C
+#define LOCAL_GL_HISTOGRAM_LUMINANCE_SIZE_EXT                0x802C
+#define LOCAL_GL_HISTOGRAM_RED_SIZE                          0x8028
+#define LOCAL_GL_HISTOGRAM_RED_SIZE_EXT                      0x8028
+#define LOCAL_GL_HISTOGRAM_SINK                              0x802D
+#define LOCAL_GL_HISTOGRAM_SINK_EXT                          0x802D
+#define LOCAL_GL_HISTOGRAM_WIDTH                             0x8026
+#define LOCAL_GL_HISTOGRAM_WIDTH_EXT                         0x8026
+#define LOCAL_GL_HI_BIAS_NV                                  0x8714
+#define LOCAL_GL_HI_SCALE_NV                                 0x870E
+#define LOCAL_GL_HORIZONTAL_LINE_TO_NV                       0x06
+#define LOCAL_GL_HSL_COLOR                                   0x92AF
+#define LOCAL_GL_HSL_COLOR_KHR                               0x92AF
+#define LOCAL_GL_HSL_COLOR_NV                                0x92AF
+#define LOCAL_GL_HSL_HUE                                     0x92AD
+#define LOCAL_GL_HSL_HUE_KHR                                 0x92AD
+#define LOCAL_GL_HSL_HUE_NV                                  0x92AD
+#define LOCAL_GL_HSL_LUMINOSITY                              0x92B0
+#define LOCAL_GL_HSL_LUMINOSITY_KHR                          0x92B0
+#define LOCAL_GL_HSL_LUMINOSITY_NV                           0x92B0
+#define LOCAL_GL_HSL_SATURATION                              0x92AE
+#define LOCAL_GL_HSL_SATURATION_KHR                          0x92AE
+#define LOCAL_GL_HSL_SATURATION_NV                           0x92AE
+#define LOCAL_GL_IDENTITY_NV                                 0x862A
+#define LOCAL_GL_IGNORE_BORDER_HP                            0x8150
+#define LOCAL_GL_IMAGE_1D                                    0x904C
+#define LOCAL_GL_IMAGE_1D_ARRAY                              0x9052
+#define LOCAL_GL_IMAGE_1D_ARRAY_EXT                          0x9052
+#define LOCAL_GL_IMAGE_1D_EXT                                0x904C
+#define LOCAL_GL_IMAGE_2D                                    0x904D
+#define LOCAL_GL_IMAGE_2D_ARRAY                              0x9053
+#define LOCAL_GL_IMAGE_2D_ARRAY_EXT                          0x9053
+#define LOCAL_GL_IMAGE_2D_EXT                                0x904D
+#define LOCAL_GL_IMAGE_2D_MULTISAMPLE                        0x9055
+#define LOCAL_GL_IMAGE_2D_MULTISAMPLE_ARRAY                  0x9056
+#define LOCAL_GL_IMAGE_2D_MULTISAMPLE_ARRAY_EXT              0x9056
+#define LOCAL_GL_IMAGE_2D_MULTISAMPLE_EXT                    0x9055
+#define LOCAL_GL_IMAGE_2D_RECT                               0x904F
+#define LOCAL_GL_IMAGE_2D_RECT_EXT                           0x904F
+#define LOCAL_GL_IMAGE_3D                                    0x904E
+#define LOCAL_GL_IMAGE_3D_EXT                                0x904E
+#define LOCAL_GL_IMAGE_BINDING_ACCESS                        0x8F3E
+#define LOCAL_GL_IMAGE_BINDING_ACCESS_EXT                    0x8F3E
+#define LOCAL_GL_IMAGE_BINDING_FORMAT                        0x906E
+#define LOCAL_GL_IMAGE_BINDING_FORMAT_EXT                    0x906E
+#define LOCAL_GL_IMAGE_BINDING_LAYER                         0x8F3D
+#define LOCAL_GL_IMAGE_BINDING_LAYERED                       0x8F3C
+#define LOCAL_GL_IMAGE_BINDING_LAYERED_EXT                   0x8F3C
+#define LOCAL_GL_IMAGE_BINDING_LAYER_EXT                     0x8F3D
+#define LOCAL_GL_IMAGE_BINDING_LEVEL                         0x8F3B
+#define LOCAL_GL_IMAGE_BINDING_LEVEL_EXT                     0x8F3B
+#define LOCAL_GL_IMAGE_BINDING_NAME                          0x8F3A
+#define LOCAL_GL_IMAGE_BINDING_NAME_EXT                      0x8F3A
+#define LOCAL_GL_IMAGE_BUFFER                                0x9051
+#define LOCAL_GL_IMAGE_BUFFER_EXT                            0x9051
+#define LOCAL_GL_IMAGE_BUFFER_OES                            0x9051
+#define LOCAL_GL_IMAGE_CLASS_10_10_10_2                      0x82C3
+#define LOCAL_GL_IMAGE_CLASS_11_11_10                        0x82C2
+#define LOCAL_GL_IMAGE_CLASS_1_X_16                          0x82BE
+#define LOCAL_GL_IMAGE_CLASS_1_X_32                          0x82BB
+#define LOCAL_GL_IMAGE_CLASS_1_X_8                           0x82C1
+#define LOCAL_GL_IMAGE_CLASS_2_X_16                          0x82BD
+#define LOCAL_GL_IMAGE_CLASS_2_X_32                          0x82BA
+#define LOCAL_GL_IMAGE_CLASS_2_X_8                           0x82C0
+#define LOCAL_GL_IMAGE_CLASS_4_X_16                          0x82BC
+#define LOCAL_GL_IMAGE_CLASS_4_X_32                          0x82B9
+#define LOCAL_GL_IMAGE_CLASS_4_X_8                           0x82BF
+#define LOCAL_GL_IMAGE_COMPATIBILITY_CLASS                   0x82A8
+#define LOCAL_GL_IMAGE_CUBE                                  0x9050
+#define LOCAL_GL_IMAGE_CUBE_EXT                              0x9050
+#define LOCAL_GL_IMAGE_CUBE_MAP_ARRAY                        0x9054
+#define LOCAL_GL_IMAGE_CUBE_MAP_ARRAY_EXT                    0x9054
+#define LOCAL_GL_IMAGE_CUBE_MAP_ARRAY_OES                    0x9054
+#define LOCAL_GL_IMAGE_CUBIC_WEIGHT_HP                       0x815E
+#define LOCAL_GL_IMAGE_FORMAT_COMPATIBILITY_BY_CLASS         0x90C9
+#define LOCAL_GL_IMAGE_FORMAT_COMPATIBILITY_BY_SIZE          0x90C8
+#define LOCAL_GL_IMAGE_FORMAT_COMPATIBILITY_TYPE             0x90C7
+#define LOCAL_GL_IMAGE_MAG_FILTER_HP                         0x815C
+#define LOCAL_GL_IMAGE_MIN_FILTER_HP                         0x815D
+#define LOCAL_GL_IMAGE_PIXEL_FORMAT                          0x82A9
+#define LOCAL_GL_IMAGE_PIXEL_TYPE                            0x82AA
+#define LOCAL_GL_IMAGE_ROTATE_ANGLE_HP                       0x8159
+#define LOCAL_GL_IMAGE_ROTATE_ORIGIN_X_HP                    0x815A
+#define LOCAL_GL_IMAGE_ROTATE_ORIGIN_Y_HP                    0x815B
+#define LOCAL_GL_IMAGE_SCALE_X_HP                            0x8155
+#define LOCAL_GL_IMAGE_SCALE_Y_HP                            0x8156
+#define LOCAL_GL_IMAGE_TEXEL_SIZE                            0x82A7
+#define LOCAL_GL_IMAGE_TRANSFORM_2D_HP                       0x8161
+#define LOCAL_GL_IMAGE_TRANSLATE_X_HP                        0x8157
+#define LOCAL_GL_IMAGE_TRANSLATE_Y_HP                        0x8158
+#define LOCAL_GL_IMPLEMENTATION_COLOR_READ_FORMAT            0x8B9B
+#define LOCAL_GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES        0x8B9B
+#define LOCAL_GL_IMPLEMENTATION_COLOR_READ_TYPE              0x8B9A
+#define LOCAL_GL_IMPLEMENTATION_COLOR_READ_TYPE_OES          0x8B9A
+#define LOCAL_GL_INCLUSIVE_EXT                               0x8F10
+#define LOCAL_GL_INCR                                        0x1E02
+#define LOCAL_GL_INCR_WRAP                                   0x8507
+#define LOCAL_GL_INCR_WRAP_EXT                               0x8507
+#define LOCAL_GL_INCR_WRAP_OES                               0x8507
+#define LOCAL_GL_INDEX                                       0x8222
+#define LOCAL_GL_INDEX_ARRAY                                 0x8077
+#define LOCAL_GL_INDEX_ARRAY_ADDRESS_NV                      0x8F24
+#define LOCAL_GL_INDEX_ARRAY_BUFFER_BINDING                  0x8899
+#define LOCAL_GL_INDEX_ARRAY_BUFFER_BINDING_ARB              0x8899
+#define LOCAL_GL_INDEX_ARRAY_COUNT_EXT                       0x8087
+#define LOCAL_GL_INDEX_ARRAY_EXT                             0x8077
+#define LOCAL_GL_INDEX_ARRAY_LENGTH_NV                       0x8F2E
+#define LOCAL_GL_INDEX_ARRAY_LIST_IBM                        103073
+#define LOCAL_GL_INDEX_ARRAY_LIST_STRIDE_IBM                 103083
+#define LOCAL_GL_INDEX_ARRAY_POINTER                         0x8091
+#define LOCAL_GL_INDEX_ARRAY_POINTER_EXT                     0x8091
+#define LOCAL_GL_INDEX_ARRAY_STRIDE                          0x8086
+#define LOCAL_GL_INDEX_ARRAY_STRIDE_EXT                      0x8086
+#define LOCAL_GL_INDEX_ARRAY_TYPE                            0x8085
+#define LOCAL_GL_INDEX_ARRAY_TYPE_EXT                        0x8085
+#define LOCAL_GL_INDEX_BITS                                  0x0D51
+#define LOCAL_GL_INDEX_BIT_PGI                               0x00080000
+#define LOCAL_GL_INDEX_CLEAR_VALUE                           0x0C20
+#define LOCAL_GL_INDEX_LOGIC_OP                              0x0BF1
+#define LOCAL_GL_INDEX_MATERIAL_EXT                          0x81B8
+#define LOCAL_GL_INDEX_MATERIAL_FACE_EXT                     0x81BA
+#define LOCAL_GL_INDEX_MATERIAL_PARAMETER_EXT                0x81B9
+#define LOCAL_GL_INDEX_MODE                                  0x0C30
+#define LOCAL_GL_INDEX_OFFSET                                0x0D13
+#define LOCAL_GL_INDEX_SHIFT                                 0x0D12
+#define LOCAL_GL_INDEX_TEST_EXT                              0x81B5
+#define LOCAL_GL_INDEX_TEST_FUNC_EXT                         0x81B6
+#define LOCAL_GL_INDEX_TEST_REF_EXT                          0x81B7
+#define LOCAL_GL_INDEX_WRITEMASK                             0x0C21
+#define LOCAL_GL_INFO_LOG_LENGTH                             0x8B84
+#define LOCAL_GL_INNOCENT_CONTEXT_RESET                      0x8254
+#define LOCAL_GL_INNOCENT_CONTEXT_RESET_ARB                  0x8254
+#define LOCAL_GL_INNOCENT_CONTEXT_RESET_EXT                  0x8254
+#define LOCAL_GL_INNOCENT_CONTEXT_RESET_KHR                  0x8254
+#define LOCAL_GL_INSTRUMENT_BUFFER_POINTER_SGIX              0x8180
+#define LOCAL_GL_INSTRUMENT_MEASUREMENTS_SGIX                0x8181
+#define LOCAL_GL_INT                                         0x1404
+#define LOCAL_GL_INT16_NV                                    0x8FE4
+#define LOCAL_GL_INT16_VEC2_NV                               0x8FE5
+#define LOCAL_GL_INT16_VEC3_NV                               0x8FE6
+#define LOCAL_GL_INT16_VEC4_NV                               0x8FE7
+#define LOCAL_GL_INT64_ARB                                   0x140E
+#define LOCAL_GL_INT64_NV                                    0x140E
+#define LOCAL_GL_INT64_VEC2_ARB                              0x8FE9
+#define LOCAL_GL_INT64_VEC2_NV                               0x8FE9
+#define LOCAL_GL_INT64_VEC3_ARB                              0x8FEA
+#define LOCAL_GL_INT64_VEC3_NV                               0x8FEA
+#define LOCAL_GL_INT64_VEC4_ARB                              0x8FEB
+#define LOCAL_GL_INT64_VEC4_NV                               0x8FEB
+#define LOCAL_GL_INT8_NV                                     0x8FE0
+#define LOCAL_GL_INT8_VEC2_NV                                0x8FE1
+#define LOCAL_GL_INT8_VEC3_NV                                0x8FE2
+#define LOCAL_GL_INT8_VEC4_NV                                0x8FE3
+#define LOCAL_GL_INTENSITY                                   0x8049
+#define LOCAL_GL_INTENSITY12                                 0x804C
+#define LOCAL_GL_INTENSITY12_EXT                             0x804C
+#define LOCAL_GL_INTENSITY16                                 0x804D
+#define LOCAL_GL_INTENSITY16F_ARB                            0x881D
+#define LOCAL_GL_INTENSITY16I_EXT                            0x8D8B
+#define LOCAL_GL_INTENSITY16UI_EXT                           0x8D79
+#define LOCAL_GL_INTENSITY16_EXT                             0x804D
+#define LOCAL_GL_INTENSITY16_SNORM                           0x901B
+#define LOCAL_GL_INTENSITY32F_ARB                            0x8817
+#define LOCAL_GL_INTENSITY32I_EXT                            0x8D85
+#define LOCAL_GL_INTENSITY32UI_EXT                           0x8D73
+#define LOCAL_GL_INTENSITY4                                  0x804A
+#define LOCAL_GL_INTENSITY4_EXT                              0x804A
+#define LOCAL_GL_INTENSITY8                                  0x804B
+#define LOCAL_GL_INTENSITY8I_EXT                             0x8D91
+#define LOCAL_GL_INTENSITY8UI_EXT                            0x8D7F
+#define LOCAL_GL_INTENSITY8_EXT                              0x804B
+#define LOCAL_GL_INTENSITY8_SNORM                            0x9017
+#define LOCAL_GL_INTENSITY_EXT                               0x8049
+#define LOCAL_GL_INTENSITY_FLOAT16_APPLE                     0x881D
+#define LOCAL_GL_INTENSITY_FLOAT16_ATI                       0x881D
+#define LOCAL_GL_INTENSITY_FLOAT32_APPLE                     0x8817
+#define LOCAL_GL_INTENSITY_FLOAT32_ATI                       0x8817
+#define LOCAL_GL_INTENSITY_SNORM                             0x9013
+#define LOCAL_GL_INTERLACE_OML                               0x8980
+#define LOCAL_GL_INTERLACE_READ_INGR                         0x8568
+#define LOCAL_GL_INTERLACE_READ_OML                          0x8981
+#define LOCAL_GL_INTERLACE_SGIX                              0x8094
+#define LOCAL_GL_INTERLEAVED_ATTRIBS                         0x8C8C
+#define LOCAL_GL_INTERLEAVED_ATTRIBS_EXT                     0x8C8C
+#define LOCAL_GL_INTERLEAVED_ATTRIBS_NV                      0x8C8C
+#define LOCAL_GL_INTERNALFORMAT_ALPHA_SIZE                   0x8274
+#define LOCAL_GL_INTERNALFORMAT_ALPHA_TYPE                   0x827B
+#define LOCAL_GL_INTERNALFORMAT_BLUE_SIZE                    0x8273
+#define LOCAL_GL_INTERNALFORMAT_BLUE_TYPE                    0x827A
+#define LOCAL_GL_INTERNALFORMAT_DEPTH_SIZE                   0x8275
+#define LOCAL_GL_INTERNALFORMAT_DEPTH_TYPE                   0x827C
+#define LOCAL_GL_INTERNALFORMAT_GREEN_SIZE                   0x8272
+#define LOCAL_GL_INTERNALFORMAT_GREEN_TYPE                   0x8279
+#define LOCAL_GL_INTERNALFORMAT_PREFERRED                    0x8270
+#define LOCAL_GL_INTERNALFORMAT_RED_SIZE                     0x8271
+#define LOCAL_GL_INTERNALFORMAT_RED_TYPE                     0x8278
+#define LOCAL_GL_INTERNALFORMAT_SHARED_SIZE                  0x8277
+#define LOCAL_GL_INTERNALFORMAT_STENCIL_SIZE                 0x8276
+#define LOCAL_GL_INTERNALFORMAT_STENCIL_TYPE                 0x827D
+#define LOCAL_GL_INTERNALFORMAT_SUPPORTED                    0x826F
+#define LOCAL_GL_INTERPOLATE                                 0x8575
+#define LOCAL_GL_INTERPOLATE_ARB                             0x8575
+#define LOCAL_GL_INTERPOLATE_EXT                             0x8575
+#define LOCAL_GL_INT_10_10_10_2_OES                          0x8DF7
+#define LOCAL_GL_INT_2_10_10_10_REV                          0x8D9F
+#define LOCAL_GL_INT_IMAGE_1D                                0x9057
+#define LOCAL_GL_INT_IMAGE_1D_ARRAY                          0x905D
+#define LOCAL_GL_INT_IMAGE_1D_ARRAY_EXT                      0x905D
+#define LOCAL_GL_INT_IMAGE_1D_EXT                            0x9057
+#define LOCAL_GL_INT_IMAGE_2D                                0x9058
+#define LOCAL_GL_INT_IMAGE_2D_ARRAY                          0x905E
+#define LOCAL_GL_INT_IMAGE_2D_ARRAY_EXT                      0x905E
+#define LOCAL_GL_INT_IMAGE_2D_EXT                            0x9058
+#define LOCAL_GL_INT_IMAGE_2D_MULTISAMPLE                    0x9060
+#define LOCAL_GL_INT_IMAGE_2D_MULTISAMPLE_ARRAY              0x9061
+#define LOCAL_GL_INT_IMAGE_2D_MULTISAMPLE_ARRAY_EXT          0x9061
+#define LOCAL_GL_INT_IMAGE_2D_MULTISAMPLE_EXT                0x9060
+#define LOCAL_GL_INT_IMAGE_2D_RECT                           0x905A
+#define LOCAL_GL_INT_IMAGE_2D_RECT_EXT                       0x905A
+#define LOCAL_GL_INT_IMAGE_3D                                0x9059
+#define LOCAL_GL_INT_IMAGE_3D_EXT                            0x9059
+#define LOCAL_GL_INT_IMAGE_BUFFER                            0x905C
+#define LOCAL_GL_INT_IMAGE_BUFFER_EXT                        0x905C
+#define LOCAL_GL_INT_IMAGE_BUFFER_OES                        0x905C
+#define LOCAL_GL_INT_IMAGE_CUBE                              0x905B
+#define LOCAL_GL_INT_IMAGE_CUBE_EXT                          0x905B
+#define LOCAL_GL_INT_IMAGE_CUBE_MAP_ARRAY                    0x905F
+#define LOCAL_GL_INT_IMAGE_CUBE_MAP_ARRAY_EXT                0x905F
+#define LOCAL_GL_INT_IMAGE_CUBE_MAP_ARRAY_OES                0x905F
+#define LOCAL_GL_INT_SAMPLER_1D                              0x8DC9
+#define LOCAL_GL_INT_SAMPLER_1D_ARRAY                        0x8DCE
+#define LOCAL_GL_INT_SAMPLER_1D_ARRAY_EXT                    0x8DCE
+#define LOCAL_GL_INT_SAMPLER_1D_EXT                          0x8DC9
+#define LOCAL_GL_INT_SAMPLER_2D                              0x8DCA
+#define LOCAL_GL_INT_SAMPLER_2D_ARRAY                        0x8DCF
+#define LOCAL_GL_INT_SAMPLER_2D_ARRAY_EXT                    0x8DCF
+#define LOCAL_GL_INT_SAMPLER_2D_EXT                          0x8DCA
+#define LOCAL_GL_INT_SAMPLER_2D_MULTISAMPLE                  0x9109
+#define LOCAL_GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY            0x910C
+#define LOCAL_GL_INT_SAMPLER_2D_MULTISAMPLE_ARRAY_OES        0x910C
+#define LOCAL_GL_INT_SAMPLER_2D_RECT                         0x8DCD
+#define LOCAL_GL_INT_SAMPLER_2D_RECT_EXT                     0x8DCD
+#define LOCAL_GL_INT_SAMPLER_3D                              0x8DCB
+#define LOCAL_GL_INT_SAMPLER_3D_EXT                          0x8DCB
+#define LOCAL_GL_INT_SAMPLER_BUFFER                          0x8DD0
+#define LOCAL_GL_INT_SAMPLER_BUFFER_AMD                      0x9002
+#define LOCAL_GL_INT_SAMPLER_BUFFER_EXT                      0x8DD0
+#define LOCAL_GL_INT_SAMPLER_BUFFER_OES                      0x8DD0
+#define LOCAL_GL_INT_SAMPLER_CUBE                            0x8DCC
+#define LOCAL_GL_INT_SAMPLER_CUBE_EXT                        0x8DCC
+#define LOCAL_GL_INT_SAMPLER_CUBE_MAP_ARRAY                  0x900E
+#define LOCAL_GL_INT_SAMPLER_CUBE_MAP_ARRAY_ARB              0x900E
+#define LOCAL_GL_INT_SAMPLER_CUBE_MAP_ARRAY_EXT              0x900E
+#define LOCAL_GL_INT_SAMPLER_CUBE_MAP_ARRAY_OES              0x900E
+#define LOCAL_GL_INT_SAMPLER_RENDERBUFFER_NV                 0x8E57
+#define LOCAL_GL_INT_VEC2                                    0x8B53
+#define LOCAL_GL_INT_VEC2_ARB                                0x8B53
+#define LOCAL_GL_INT_VEC3                                    0x8B54
+#define LOCAL_GL_INT_VEC3_ARB                                0x8B54
+#define LOCAL_GL_INT_VEC4                                    0x8B55
+#define LOCAL_GL_INT_VEC4_ARB                                0x8B55
+#define LOCAL_GL_INVALID_ENUM                                0x0500
+#define LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION               0x0506
+#define LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION_EXT           0x0506
+#define LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION_OES           0x0506
+#define LOCAL_GL_INVALID_INDEX                               0xFFFFFFFF
+#define LOCAL_GL_INVALID_OPERATION                           0x0502
+#define LOCAL_GL_INVALID_VALUE                               0x0501
+#define LOCAL_GL_INVARIANT_DATATYPE_EXT                      0x87EB
+#define LOCAL_GL_INVARIANT_EXT                               0x87C2
+#define LOCAL_GL_INVARIANT_VALUE_EXT                         0x87EA
+#define LOCAL_GL_INVERSE_NV                                  0x862B
+#define LOCAL_GL_INVERSE_TRANSPOSE_NV                        0x862D
+#define LOCAL_GL_INVERT                                      0x150A
+#define LOCAL_GL_INVERTED_SCREEN_W_REND                      0x8491
+#define LOCAL_GL_INVERT_OVG_NV                               0x92B4
+#define LOCAL_GL_INVERT_RGB_NV                               0x92A3
+#define LOCAL_GL_IR_INSTRUMENT1_SGIX                         0x817F
+#define LOCAL_GL_ISOLINES                                    0x8E7A
+#define LOCAL_GL_ISOLINES_EXT                                0x8E7A
+#define LOCAL_GL_ISOLINES_OES                                0x8E7A
+#define LOCAL_GL_IS_PER_PATCH                                0x92E7
+#define LOCAL_GL_IS_PER_PATCH_EXT                            0x92E7
+#define LOCAL_GL_IS_PER_PATCH_OES                            0x92E7
+#define LOCAL_GL_IS_ROW_MAJOR                                0x9300
+#define LOCAL_GL_ITALIC_BIT_NV                               0x02
+#define LOCAL_GL_IUI_N3F_V2F_EXT                             0x81AF
+#define LOCAL_GL_IUI_N3F_V3F_EXT                             0x81B0
+#define LOCAL_GL_IUI_V2F_EXT                                 0x81AD
+#define LOCAL_GL_IUI_V3F_EXT                                 0x81AE
+#define LOCAL_GL_KEEP                                        0x1E00
+#define LOCAL_GL_LARGE_CCW_ARC_TO_NV                         0x16
+#define LOCAL_GL_LARGE_CW_ARC_TO_NV                          0x18
+#define LOCAL_GL_LAST_VERTEX_CONVENTION                      0x8E4E
+#define LOCAL_GL_LAST_VERTEX_CONVENTION_EXT                  0x8E4E
+#define LOCAL_GL_LAST_VERTEX_CONVENTION_OES                  0x8E4E
+#define LOCAL_GL_LAST_VIDEO_CAPTURE_STATUS_NV                0x9027
+#define LOCAL_GL_LAYER_NV                                    0x8DAA
+#define LOCAL_GL_LAYER_PROVOKING_VERTEX                      0x825E
+#define LOCAL_GL_LAYER_PROVOKING_VERTEX_EXT                  0x825E
+#define LOCAL_GL_LAYER_PROVOKING_VERTEX_OES                  0x825E
+#define LOCAL_GL_LAYOUT_COLOR_ATTACHMENT_EXT                 0x958E
+#define LOCAL_GL_LAYOUT_DEFAULT_INTEL                        0
+#define LOCAL_GL_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_EXT       0x9531
+#define LOCAL_GL_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_EXT       0x9530
+#define LOCAL_GL_LAYOUT_DEPTH_STENCIL_ATTACHMENT_EXT         0x958F
+#define LOCAL_GL_LAYOUT_DEPTH_STENCIL_READ_ONLY_EXT          0x9590
+#define LOCAL_GL_LAYOUT_GENERAL_EXT                          0x958D
+#define LOCAL_GL_LAYOUT_LINEAR_CPU_CACHED_INTEL              2
+#define LOCAL_GL_LAYOUT_LINEAR_INTEL                         1
+#define LOCAL_GL_LAYOUT_SHADER_READ_ONLY_EXT                 0x9591
+#define LOCAL_GL_LAYOUT_TRANSFER_DST_EXT                     0x9593
+#define LOCAL_GL_LAYOUT_TRANSFER_SRC_EXT                     0x9592
+#define LOCAL_GL_LEFT                                        0x0406
+#define LOCAL_GL_LEQUAL                                      0x0203
+#define LOCAL_GL_LERP_ATI                                    0x8969
+#define LOCAL_GL_LESS                                        0x0201
+#define LOCAL_GL_LGPU_SEPARATE_STORAGE_BIT_NVX               0x0800
+#define LOCAL_GL_LIGHT0                                      0x4000
+#define LOCAL_GL_LIGHT1                                      0x4001
+#define LOCAL_GL_LIGHT2                                      0x4002
+#define LOCAL_GL_LIGHT3                                      0x4003
+#define LOCAL_GL_LIGHT4                                      0x4004
+#define LOCAL_GL_LIGHT5                                      0x4005
+#define LOCAL_GL_LIGHT6                                      0x4006
+#define LOCAL_GL_LIGHT7                                      0x4007
+#define LOCAL_GL_LIGHTEN                                     0x9298
+#define LOCAL_GL_LIGHTEN_KHR                                 0x9298
+#define LOCAL_GL_LIGHTEN_NV                                  0x9298
+#define LOCAL_GL_LIGHTING                                    0x0B50
+#define LOCAL_GL_LIGHTING_BIT                                0x00000040
+#define LOCAL_GL_LIGHT_ENV_MODE_SGIX                         0x8407
+#define LOCAL_GL_LIGHT_MODEL_AMBIENT                         0x0B53
+#define LOCAL_GL_LIGHT_MODEL_COLOR_CONTROL                   0x81F8
+#define LOCAL_GL_LIGHT_MODEL_COLOR_CONTROL_EXT               0x81F8
+#define LOCAL_GL_LIGHT_MODEL_LOCAL_VIEWER                    0x0B51
+#define LOCAL_GL_LIGHT_MODEL_SPECULAR_VECTOR_APPLE           0x85B0
+#define LOCAL_GL_LIGHT_MODEL_TWO_SIDE                        0x0B52
+#define LOCAL_GL_LINE                                        0x1B01
+#define LOCAL_GL_LINEAR                                      0x2601
+#define LOCAL_GL_LINEARBURN_NV                               0x92A5
+#define LOCAL_GL_LINEARDODGE_NV                              0x92A4
+#define LOCAL_GL_LINEARLIGHT_NV                              0x92A7
+#define LOCAL_GL_LINEAR_ATTENUATION                          0x1208
+#define LOCAL_GL_LINEAR_CLIPMAP_LINEAR_SGIX                  0x8170
+#define LOCAL_GL_LINEAR_CLIPMAP_NEAREST_SGIX                 0x844F
+#define LOCAL_GL_LINEAR_DETAIL_ALPHA_SGIS                    0x8098
+#define LOCAL_GL_LINEAR_DETAIL_COLOR_SGIS                    0x8099
+#define LOCAL_GL_LINEAR_DETAIL_SGIS                          0x8097
+#define LOCAL_GL_LINEAR_MIPMAP_LINEAR                        0x2703
+#define LOCAL_GL_LINEAR_MIPMAP_NEAREST                       0x2701
+#define LOCAL_GL_LINEAR_SHARPEN_ALPHA_SGIS                   0x80AE
+#define LOCAL_GL_LINEAR_SHARPEN_COLOR_SGIS                   0x80AF
+#define LOCAL_GL_LINEAR_SHARPEN_SGIS                         0x80AD
+#define LOCAL_GL_LINEAR_TILING_EXT                           0x9585
+#define LOCAL_GL_LINES                                       0x0001
+#define LOCAL_GL_LINES_ADJACENCY                             0x000A
+#define LOCAL_GL_LINES_ADJACENCY_ARB                         0x000A
+#define LOCAL_GL_LINES_ADJACENCY_EXT                         0x000A
+#define LOCAL_GL_LINES_ADJACENCY_OES                         0x000A
+#define LOCAL_GL_LINE_BIT                                    0x00000004
+#define LOCAL_GL_LINE_LOOP                                   0x0002
+#define LOCAL_GL_LINE_NV                                     0x1B01
+#define LOCAL_GL_LINE_QUALITY_HINT_SGIX                      0x835B
+#define LOCAL_GL_LINE_RESET_TOKEN                            0x0707
+#define LOCAL_GL_LINE_SMOOTH                                 0x0B20
+#define LOCAL_GL_LINE_SMOOTH_HINT                            0x0C52
+#define LOCAL_GL_LINE_STIPPLE                                0x0B24
+#define LOCAL_GL_LINE_STIPPLE_PATTERN                        0x0B25
+#define LOCAL_GL_LINE_STIPPLE_REPEAT                         0x0B26
+#define LOCAL_GL_LINE_STRIP                                  0x0003
+#define LOCAL_GL_LINE_STRIP_ADJACENCY                        0x000B
+#define LOCAL_GL_LINE_STRIP_ADJACENCY_ARB                    0x000B
+#define LOCAL_GL_LINE_STRIP_ADJACENCY_EXT                    0x000B
+#define LOCAL_GL_LINE_STRIP_ADJACENCY_OES                    0x000B
+#define LOCAL_GL_LINE_TOKEN                                  0x0702
+#define LOCAL_GL_LINE_TO_NV                                  0x04
+#define LOCAL_GL_LINE_WIDTH                                  0x0B21
+#define LOCAL_GL_LINE_WIDTH_COMMAND_NV                       0x000D
+#define LOCAL_GL_LINE_WIDTH_GRANULARITY                      0x0B23
+#define LOCAL_GL_LINE_WIDTH_RANGE                            0x0B22
+#define LOCAL_GL_LINK_STATUS                                 0x8B82
+#define LOCAL_GL_LIST_BASE                                   0x0B32
+#define LOCAL_GL_LIST_BIT                                    0x00020000
+#define LOCAL_GL_LIST_INDEX                                  0x0B33
+#define LOCAL_GL_LIST_MODE                                   0x0B30
+#define LOCAL_GL_LIST_PRIORITY_SGIX                          0x8182
+#define LOCAL_GL_LOAD                                        0x0101
+#define LOCAL_GL_LOCAL_CONSTANT_DATATYPE_EXT                 0x87ED
+#define LOCAL_GL_LOCAL_CONSTANT_EXT                          0x87C3
+#define LOCAL_GL_LOCAL_CONSTANT_VALUE_EXT                    0x87EC
+#define LOCAL_GL_LOCAL_EXT                                   0x87C4
+#define LOCAL_GL_LOCATION                                    0x930E
+#define LOCAL_GL_LOCATION_COMPONENT                          0x934A
+#define LOCAL_GL_LOCATION_INDEX                              0x930F
+#define LOCAL_GL_LOCATION_INDEX_EXT                          0x930F
+#define LOCAL_GL_LOGIC_OP                                    0x0BF1
+#define LOCAL_GL_LOGIC_OP_MODE                               0x0BF0
+#define LOCAL_GL_LOSE_CONTEXT_ON_RESET                       0x8252
+#define LOCAL_GL_LOSE_CONTEXT_ON_RESET_ARB                   0x8252
+#define LOCAL_GL_LOSE_CONTEXT_ON_RESET_EXT                   0x8252
+#define LOCAL_GL_LOSE_CONTEXT_ON_RESET_KHR                   0x8252
+#define LOCAL_GL_LOWER_LEFT                                  0x8CA1
+#define LOCAL_GL_LOWER_LEFT_EXT                              0x8CA1
+#define LOCAL_GL_LOW_FLOAT                                   0x8DF0
+#define LOCAL_GL_LOW_INT                                     0x8DF3
+#define LOCAL_GL_LO_BIAS_NV                                  0x8715
+#define LOCAL_GL_LO_SCALE_NV                                 0x870F
+#define LOCAL_GL_LUID_SIZE_EXT                               8
+#define LOCAL_GL_LUMINANCE                                   0x1909
+#define LOCAL_GL_LUMINANCE12                                 0x8041
+#define LOCAL_GL_LUMINANCE12_ALPHA12                         0x8047
+#define LOCAL_GL_LUMINANCE12_ALPHA12_EXT                     0x8047
+#define LOCAL_GL_LUMINANCE12_ALPHA4                          0x8046
+#define LOCAL_GL_LUMINANCE12_ALPHA4_EXT                      0x8046
+#define LOCAL_GL_LUMINANCE12_EXT                             0x8041
+#define LOCAL_GL_LUMINANCE16                                 0x8042
+#define LOCAL_GL_LUMINANCE16F_ARB                            0x881E
+#define LOCAL_GL_LUMINANCE16F_EXT                            0x881E
+#define LOCAL_GL_LUMINANCE16I_EXT                            0x8D8C
+#define LOCAL_GL_LUMINANCE16UI_EXT                           0x8D7A
+#define LOCAL_GL_LUMINANCE16_ALPHA16                         0x8048
+#define LOCAL_GL_LUMINANCE16_ALPHA16_EXT                     0x8048
+#define LOCAL_GL_LUMINANCE16_ALPHA16_SNORM                   0x901A
+#define LOCAL_GL_LUMINANCE16_EXT                             0x8042
+#define LOCAL_GL_LUMINANCE16_SNORM                           0x9019
+#define LOCAL_GL_LUMINANCE32F_ARB                            0x8818
+#define LOCAL_GL_LUMINANCE32F_EXT                            0x8818
+#define LOCAL_GL_LUMINANCE32I_EXT                            0x8D86
+#define LOCAL_GL_LUMINANCE32UI_EXT                           0x8D74
+#define LOCAL_GL_LUMINANCE4                                  0x803F
+#define LOCAL_GL_LUMINANCE4_ALPHA4                           0x8043
+#define LOCAL_GL_LUMINANCE4_ALPHA4_EXT                       0x8043
+#define LOCAL_GL_LUMINANCE4_ALPHA4_OES                       0x8043
+#define LOCAL_GL_LUMINANCE4_EXT                              0x803F
+#define LOCAL_GL_LUMINANCE6_ALPHA2                           0x8044
+#define LOCAL_GL_LUMINANCE6_ALPHA2_EXT                       0x8044
+#define LOCAL_GL_LUMINANCE8                                  0x8040
+#define LOCAL_GL_LUMINANCE8I_EXT                             0x8D92
+#define LOCAL_GL_LUMINANCE8UI_EXT                            0x8D80
+#define LOCAL_GL_LUMINANCE8_ALPHA8                           0x8045
+#define LOCAL_GL_LUMINANCE8_ALPHA8_EXT                       0x8045
+#define LOCAL_GL_LUMINANCE8_ALPHA8_OES                       0x8045
+#define LOCAL_GL_LUMINANCE8_ALPHA8_SNORM                     0x9016
+#define LOCAL_GL_LUMINANCE8_EXT                              0x8040
+#define LOCAL_GL_LUMINANCE8_OES                              0x8040
+#define LOCAL_GL_LUMINANCE8_SNORM                            0x9015
+#define LOCAL_GL_LUMINANCE_ALPHA                             0x190A
+#define LOCAL_GL_LUMINANCE_ALPHA16F_ARB                      0x881F
+#define LOCAL_GL_LUMINANCE_ALPHA16F_EXT                      0x881F
+#define LOCAL_GL_LUMINANCE_ALPHA16I_EXT                      0x8D8D
+#define LOCAL_GL_LUMINANCE_ALPHA16UI_EXT                     0x8D7B
+#define LOCAL_GL_LUMINANCE_ALPHA32F_ARB                      0x8819
+#define LOCAL_GL_LUMINANCE_ALPHA32F_EXT                      0x8819
+#define LOCAL_GL_LUMINANCE_ALPHA32I_EXT                      0x8D87
+#define LOCAL_GL_LUMINANCE_ALPHA32UI_EXT                     0x8D75
+#define LOCAL_GL_LUMINANCE_ALPHA8I_EXT                       0x8D93
+#define LOCAL_GL_LUMINANCE_ALPHA8UI_EXT                      0x8D81
+#define LOCAL_GL_LUMINANCE_ALPHA_FLOAT16_APPLE               0x881F
+#define LOCAL_GL_LUMINANCE_ALPHA_FLOAT16_ATI                 0x881F
+#define LOCAL_GL_LUMINANCE_ALPHA_FLOAT32_APPLE               0x8819
+#define LOCAL_GL_LUMINANCE_ALPHA_FLOAT32_ATI                 0x8819
+#define LOCAL_GL_LUMINANCE_ALPHA_INTEGER_EXT                 0x8D9D
+#define LOCAL_GL_LUMINANCE_ALPHA_SNORM                       0x9012
+#define LOCAL_GL_LUMINANCE_FLOAT16_APPLE                     0x881E
+#define LOCAL_GL_LUMINANCE_FLOAT16_ATI                       0x881E
+#define LOCAL_GL_LUMINANCE_FLOAT32_APPLE                     0x8818
+#define LOCAL_GL_LUMINANCE_FLOAT32_ATI                       0x8818
+#define LOCAL_GL_LUMINANCE_INTEGER_EXT                       0x8D9C
+#define LOCAL_GL_LUMINANCE_SNORM                             0x9011
+#define LOCAL_GL_MAD_ATI                                     0x8968
+#define LOCAL_GL_MAGNITUDE_BIAS_NV                           0x8718
+#define LOCAL_GL_MAGNITUDE_SCALE_NV                          0x8712
+#define LOCAL_GL_MAJOR_VERSION                               0x821B
+#define LOCAL_GL_MALI_PROGRAM_BINARY_ARM                     0x8F61
+#define LOCAL_GL_MALI_SHADER_BINARY_ARM                      0x8F60
+#define LOCAL_GL_MANUAL_GENERATE_MIPMAP                      0x8294
+#define LOCAL_GL_MAP1_BINORMAL_EXT                           0x8446
+#define LOCAL_GL_MAP1_COLOR_4                                0x0D90
+#define LOCAL_GL_MAP1_GRID_DOMAIN                            0x0DD0
+#define LOCAL_GL_MAP1_GRID_SEGMENTS                          0x0DD1
+#define LOCAL_GL_MAP1_INDEX                                  0x0D91
+#define LOCAL_GL_MAP1_NORMAL                                 0x0D92
+#define LOCAL_GL_MAP1_TANGENT_EXT                            0x8444
+#define LOCAL_GL_MAP1_TEXTURE_COORD_1                        0x0D93
+#define LOCAL_GL_MAP1_TEXTURE_COORD_2                        0x0D94
+#define LOCAL_GL_MAP1_TEXTURE_COORD_3                        0x0D95
+#define LOCAL_GL_MAP1_TEXTURE_COORD_4                        0x0D96
+#define LOCAL_GL_MAP1_VERTEX_3                               0x0D97
+#define LOCAL_GL_MAP1_VERTEX_4                               0x0D98
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB0_4_NV                    0x8660
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB10_4_NV                   0x866A
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB11_4_NV                   0x866B
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB12_4_NV                   0x866C
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB13_4_NV                   0x866D
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB14_4_NV                   0x866E
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB15_4_NV                   0x866F
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB1_4_NV                    0x8661
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB2_4_NV                    0x8662
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB3_4_NV                    0x8663
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB4_4_NV                    0x8664
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB5_4_NV                    0x8665
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB6_4_NV                    0x8666
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB7_4_NV                    0x8667
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB8_4_NV                    0x8668
+#define LOCAL_GL_MAP1_VERTEX_ATTRIB9_4_NV                    0x8669
+#define LOCAL_GL_MAP2_BINORMAL_EXT                           0x8447
+#define LOCAL_GL_MAP2_COLOR_4                                0x0DB0
+#define LOCAL_GL_MAP2_GRID_DOMAIN                            0x0DD2
+#define LOCAL_GL_MAP2_GRID_SEGMENTS                          0x0DD3
+#define LOCAL_GL_MAP2_INDEX                                  0x0DB1
+#define LOCAL_GL_MAP2_NORMAL                                 0x0DB2
+#define LOCAL_GL_MAP2_TANGENT_EXT                            0x8445
+#define LOCAL_GL_MAP2_TEXTURE_COORD_1                        0x0DB3
+#define LOCAL_GL_MAP2_TEXTURE_COORD_2                        0x0DB4
+#define LOCAL_GL_MAP2_TEXTURE_COORD_3                        0x0DB5
+#define LOCAL_GL_MAP2_TEXTURE_COORD_4                        0x0DB6
+#define LOCAL_GL_MAP2_VERTEX_3                               0x0DB7
+#define LOCAL_GL_MAP2_VERTEX_4                               0x0DB8
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB0_4_NV                    0x8670
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB10_4_NV                   0x867A
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB11_4_NV                   0x867B
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB12_4_NV                   0x867C
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB13_4_NV                   0x867D
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB14_4_NV                   0x867E
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB15_4_NV                   0x867F
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB1_4_NV                    0x8671
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB2_4_NV                    0x8672
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB3_4_NV                    0x8673
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB4_4_NV                    0x8674
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB5_4_NV                    0x8675
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB6_4_NV                    0x8676
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB7_4_NV                    0x8677
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB8_4_NV                    0x8678
+#define LOCAL_GL_MAP2_VERTEX_ATTRIB9_4_NV                    0x8679
+#define LOCAL_GL_MAP_ATTRIB_U_ORDER_NV                       0x86C3
+#define LOCAL_GL_MAP_ATTRIB_V_ORDER_NV                       0x86C4
+#define LOCAL_GL_MAP_COHERENT_BIT                            0x0080
+#define LOCAL_GL_MAP_COHERENT_BIT_EXT                        0x0080
+#define LOCAL_GL_MAP_COLOR                                   0x0D10
+#define LOCAL_GL_MAP_FLUSH_EXPLICIT_BIT                      0x0010
+#define LOCAL_GL_MAP_FLUSH_EXPLICIT_BIT_EXT                  0x0010
+#define LOCAL_GL_MAP_INVALIDATE_BUFFER_BIT                   0x0008
+#define LOCAL_GL_MAP_INVALIDATE_BUFFER_BIT_EXT               0x0008
+#define LOCAL_GL_MAP_INVALIDATE_RANGE_BIT                    0x0004
+#define LOCAL_GL_MAP_INVALIDATE_RANGE_BIT_EXT                0x0004
+#define LOCAL_GL_MAP_PERSISTENT_BIT                          0x0040
+#define LOCAL_GL_MAP_PERSISTENT_BIT_EXT                      0x0040
+#define LOCAL_GL_MAP_READ_BIT                                0x0001
+#define LOCAL_GL_MAP_READ_BIT_EXT                            0x0001
+#define LOCAL_GL_MAP_STENCIL                                 0x0D11
+#define LOCAL_GL_MAP_TESSELLATION_NV                         0x86C2
+#define LOCAL_GL_MAP_UNSYNCHRONIZED_BIT                      0x0020
+#define LOCAL_GL_MAP_UNSYNCHRONIZED_BIT_EXT                  0x0020
+#define LOCAL_GL_MAP_WRITE_BIT                               0x0002
+#define LOCAL_GL_MAP_WRITE_BIT_EXT                           0x0002
+#define LOCAL_GL_MATERIAL_SIDE_HINT_PGI                      0x1A22C
+#define LOCAL_GL_MATRIX0_ARB                                 0x88C0
+#define LOCAL_GL_MATRIX0_NV                                  0x8630
+#define LOCAL_GL_MATRIX10_ARB                                0x88CA
+#define LOCAL_GL_MATRIX11_ARB                                0x88CB
+#define LOCAL_GL_MATRIX12_ARB                                0x88CC
+#define LOCAL_GL_MATRIX13_ARB                                0x88CD
+#define LOCAL_GL_MATRIX14_ARB                                0x88CE
+#define LOCAL_GL_MATRIX15_ARB                                0x88CF
+#define LOCAL_GL_MATRIX16_ARB                                0x88D0
+#define LOCAL_GL_MATRIX17_ARB                                0x88D1
+#define LOCAL_GL_MATRIX18_ARB                                0x88D2
+#define LOCAL_GL_MATRIX19_ARB                                0x88D3
+#define LOCAL_GL_MATRIX1_ARB                                 0x88C1
+#define LOCAL_GL_MATRIX1_NV                                  0x8631
+#define LOCAL_GL_MATRIX20_ARB                                0x88D4
+#define LOCAL_GL_MATRIX21_ARB                                0x88D5
+#define LOCAL_GL_MATRIX22_ARB                                0x88D6
+#define LOCAL_GL_MATRIX23_ARB                                0x88D7
+#define LOCAL_GL_MATRIX24_ARB                                0x88D8
+#define LOCAL_GL_MATRIX25_ARB                                0x88D9
+#define LOCAL_GL_MATRIX26_ARB                                0x88DA
+#define LOCAL_GL_MATRIX27_ARB                                0x88DB
+#define LOCAL_GL_MATRIX28_ARB                                0x88DC
+#define LOCAL_GL_MATRIX29_ARB                                0x88DD
+#define LOCAL_GL_MATRIX2_ARB                                 0x88C2
+#define LOCAL_GL_MATRIX2_NV                                  0x8632
+#define LOCAL_GL_MATRIX30_ARB                                0x88DE
+#define LOCAL_GL_MATRIX31_ARB                                0x88DF
+#define LOCAL_GL_MATRIX3_ARB                                 0x88C3
+#define LOCAL_GL_MATRIX3_NV                                  0x8633
+#define LOCAL_GL_MATRIX4_ARB                                 0x88C4
+#define LOCAL_GL_MATRIX4_NV                                  0x8634
+#define LOCAL_GL_MATRIX5_ARB                                 0x88C5
+#define LOCAL_GL_MATRIX5_NV                                  0x8635
+#define LOCAL_GL_MATRIX6_ARB                                 0x88C6
+#define LOCAL_GL_MATRIX6_NV                                  0x8636
+#define LOCAL_GL_MATRIX7_ARB                                 0x88C7
+#define LOCAL_GL_MATRIX7_NV                                  0x8637
+#define LOCAL_GL_MATRIX8_ARB                                 0x88C8
+#define LOCAL_GL_MATRIX9_ARB                                 0x88C9
+#define LOCAL_GL_MATRIX_EXT                                  0x87C0
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_ARB                      0x8844
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_BUFFER_BINDING_OES       0x8B9E
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_OES                      0x8844
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_POINTER_ARB              0x8849
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_POINTER_OES              0x8849
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_SIZE_ARB                 0x8846
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_SIZE_OES                 0x8846
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_STRIDE_ARB               0x8848
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_STRIDE_OES               0x8848
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_TYPE_ARB                 0x8847
+#define LOCAL_GL_MATRIX_INDEX_ARRAY_TYPE_OES                 0x8847
+#define LOCAL_GL_MATRIX_MODE                                 0x0BA0
+#define LOCAL_GL_MATRIX_PALETTE_ARB                          0x8840
+#define LOCAL_GL_MATRIX_PALETTE_OES                          0x8840
+#define LOCAL_GL_MATRIX_STRIDE                               0x92FF
+#define LOCAL_GL_MAT_AMBIENT_AND_DIFFUSE_BIT_PGI             0x00200000
+#define LOCAL_GL_MAT_AMBIENT_BIT_PGI                         0x00100000
+#define LOCAL_GL_MAT_COLOR_INDEXES_BIT_PGI                   0x01000000
+#define LOCAL_GL_MAT_DIFFUSE_BIT_PGI                         0x00400000
+#define LOCAL_GL_MAT_EMISSION_BIT_PGI                        0x00800000
+#define LOCAL_GL_MAT_SHININESS_BIT_PGI                       0x02000000
+#define LOCAL_GL_MAT_SPECULAR_BIT_PGI                        0x04000000
+#define LOCAL_GL_MAX                                         0x8008
+#define LOCAL_GL_MAX_3D_TEXTURE_SIZE                         0x8073
+#define LOCAL_GL_MAX_3D_TEXTURE_SIZE_EXT                     0x8073
+#define LOCAL_GL_MAX_3D_TEXTURE_SIZE_OES                     0x8073
+#define LOCAL_GL_MAX_4D_TEXTURE_SIZE_SGIS                    0x8138
+#define LOCAL_GL_MAX_ACTIVE_LIGHTS_SGIX                      0x8405
+#define LOCAL_GL_MAX_ARRAY_TEXTURE_LAYERS                    0x88FF
+#define LOCAL_GL_MAX_ARRAY_TEXTURE_LAYERS_EXT                0x88FF
+#define LOCAL_GL_MAX_ASYNC_DRAW_PIXELS_SGIX                  0x8360
+#define LOCAL_GL_MAX_ASYNC_HISTOGRAM_SGIX                    0x832D
+#define LOCAL_GL_MAX_ASYNC_READ_PIXELS_SGIX                  0x8361
+#define LOCAL_GL_MAX_ASYNC_TEX_IMAGE_SGIX                    0x835F
+#define LOCAL_GL_MAX_ATOMIC_COUNTER_BUFFER_BINDINGS          0x92DC
+#define LOCAL_GL_MAX_ATOMIC_COUNTER_BUFFER_SIZE              0x92D8
+#define LOCAL_GL_MAX_ATTRIB_STACK_DEPTH                      0x0D35
+#define LOCAL_GL_MAX_BINDABLE_UNIFORM_SIZE_EXT               0x8DED
+#define LOCAL_GL_MAX_CLIENT_ATTRIB_STACK_DEPTH               0x0D3B
+#define LOCAL_GL_MAX_CLIPMAP_DEPTH_SGIX                      0x8177
+#define LOCAL_GL_MAX_CLIPMAP_VIRTUAL_DEPTH_SGIX              0x8178
+#define LOCAL_GL_MAX_CLIP_DISTANCES                          0x0D32
+#define LOCAL_GL_MAX_CLIP_DISTANCES_APPLE                    0x0D32
+#define LOCAL_GL_MAX_CLIP_DISTANCES_EXT                      0x0D32
+#define LOCAL_GL_MAX_CLIP_PLANES                             0x0D32
+#define LOCAL_GL_MAX_CLIP_PLANES_IMG                         0x0D32
+#define LOCAL_GL_MAX_COARSE_FRAGMENT_SAMPLES_NV              0x955F
+#define LOCAL_GL_MAX_COLOR_ATTACHMENTS                       0x8CDF
+#define LOCAL_GL_MAX_COLOR_ATTACHMENTS_EXT                   0x8CDF
+#define LOCAL_GL_MAX_COLOR_ATTACHMENTS_NV                    0x8CDF
+#define LOCAL_GL_MAX_COLOR_FRAMEBUFFER_SAMPLES_AMD           0x91B3
+#define LOCAL_GL_MAX_COLOR_FRAMEBUFFER_STORAGE_SAMPLES_AMD   0x91B4
+#define LOCAL_GL_MAX_COLOR_MATRIX_STACK_DEPTH                0x80B3
+#define LOCAL_GL_MAX_COLOR_MATRIX_STACK_DEPTH_SGI            0x80B3
+#define LOCAL_GL_MAX_COLOR_TEXTURE_SAMPLES                   0x910E
+#define LOCAL_GL_MAX_COMBINED_ATOMIC_COUNTERS                0x92D7
+#define LOCAL_GL_MAX_COMBINED_ATOMIC_COUNTER_BUFFERS         0x92D1
+#define LOCAL_GL_MAX_COMBINED_CLIP_AND_CULL_DISTANCES        0x82FA
+#define LOCAL_GL_MAX_COMBINED_CLIP_AND_CULL_DISTANCES_EXT    0x82FA
+#define LOCAL_GL_MAX_COMBINED_COMPUTE_UNIFORM_COMPONENTS     0x8266
+#define LOCAL_GL_MAX_COMBINED_DIMENSIONS                     0x8282
+#define LOCAL_GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS    0x8A33
+#define LOCAL_GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS    0x8A32
+#define LOCAL_GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS_EXT        0x8A32
+#define LOCAL_GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS_OES        0x8A32
+#define LOCAL_GL_MAX_COMBINED_IMAGE_UNIFORMS                 0x90CF
+#define LOCAL_GL_MAX_COMBINED_IMAGE_UNITS_AND_FRAGMENT_OUTPUTS       0x8F39
+#define LOCAL_GL_MAX_COMBINED_IMAGE_UNITS_AND_FRAGMENT_OUTPUTS_EXT   0x8F39
+#define LOCAL_GL_MAX_COMBINED_MESH_UNIFORM_COMPONENTS_NV     0x8E67
+#define LOCAL_GL_MAX_COMBINED_SHADER_OUTPUT_RESOURCES        0x8F39
+#define LOCAL_GL_MAX_COMBINED_SHADER_STORAGE_BLOCKS          0x90DC
+#define LOCAL_GL_MAX_COMBINED_TASK_UNIFORM_COMPONENTS_NV     0x8E6F
+#define LOCAL_GL_MAX_COMBINED_TESS_CONTROL_UNIFORM_COMPONENTS        0x8E1E
+#define LOCAL_GL_MAX_COMBINED_TESS_CONTROL_UNIFORM_COMPONENTS_EXT    0x8E1E
+#define LOCAL_GL_MAX_COMBINED_TESS_CONTROL_UNIFORM_COMPONENTS_OES    0x8E1E
+#define LOCAL_GL_MAX_COMBINED_TESS_EVALUATION_UNIFORM_COMPONENTS     0x8E1F
+#define LOCAL_GL_MAX_COMBINED_TESS_EVALUATION_UNIFORM_COMPONENTS_EXT 0x8E1F
+#define LOCAL_GL_MAX_COMBINED_TESS_EVALUATION_UNIFORM_COMPONENTS_OES 0x8E1F
+#define LOCAL_GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS            0x8B4D
+#define LOCAL_GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB        0x8B4D
+#define LOCAL_GL_MAX_COMBINED_UNIFORM_BLOCKS                 0x8A2E
+#define LOCAL_GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS      0x8A31
+#define LOCAL_GL_MAX_COMPUTE_ATOMIC_COUNTERS                 0x8265
+#define LOCAL_GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS          0x8264
+#define LOCAL_GL_MAX_COMPUTE_FIXED_GROUP_INVOCATIONS_ARB     0x90EB
+#define LOCAL_GL_MAX_COMPUTE_FIXED_GROUP_SIZE_ARB            0x91BF
+#define LOCAL_GL_MAX_COMPUTE_IMAGE_UNIFORMS                  0x91BD
+#define LOCAL_GL_MAX_COMPUTE_SHADER_STORAGE_BLOCKS           0x90DB
+#define LOCAL_GL_MAX_COMPUTE_SHARED_MEMORY_SIZE              0x8262
+#define LOCAL_GL_MAX_COMPUTE_TEXTURE_IMAGE_UNITS             0x91BC
+#define LOCAL_GL_MAX_COMPUTE_UNIFORM_BLOCKS                  0x91BB
+#define LOCAL_GL_MAX_COMPUTE_UNIFORM_COMPONENTS              0x8263
+#define LOCAL_GL_MAX_COMPUTE_VARIABLE_GROUP_INVOCATIONS_ARB  0x9344
+#define LOCAL_GL_MAX_COMPUTE_VARIABLE_GROUP_SIZE_ARB         0x9345
+#define LOCAL_GL_MAX_COMPUTE_WORK_GROUP_COUNT                0x91BE
+#define LOCAL_GL_MAX_COMPUTE_WORK_GROUP_INVOCATIONS          0x90EB
+#define LOCAL_GL_MAX_COMPUTE_WORK_GROUP_SIZE                 0x91BF
+#define LOCAL_GL_MAX_CONVOLUTION_HEIGHT                      0x801B
+#define LOCAL_GL_MAX_CONVOLUTION_HEIGHT_EXT                  0x801B
+#define LOCAL_GL_MAX_CONVOLUTION_WIDTH                       0x801A
+#define LOCAL_GL_MAX_CONVOLUTION_WIDTH_EXT                   0x801A
+#define LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE                   0x851C
+#define LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB               0x851C
+#define LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE_EXT               0x851C
+#define LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE_OES               0x851C
+#define LOCAL_GL_MAX_CULL_DISTANCES                          0x82F9
+#define LOCAL_GL_MAX_CULL_DISTANCES_EXT                      0x82F9
+#define LOCAL_GL_MAX_DEBUG_GROUP_STACK_DEPTH                 0x826C
+#define LOCAL_GL_MAX_DEBUG_GROUP_STACK_DEPTH_KHR             0x826C
+#define LOCAL_GL_MAX_DEBUG_LOGGED_MESSAGES                   0x9144
+#define LOCAL_GL_MAX_DEBUG_LOGGED_MESSAGES_AMD               0x9144
+#define LOCAL_GL_MAX_DEBUG_LOGGED_MESSAGES_ARB               0x9144
+#define LOCAL_GL_MAX_DEBUG_LOGGED_MESSAGES_KHR               0x9144
+#define LOCAL_GL_MAX_DEBUG_MESSAGE_LENGTH                    0x9143
+#define LOCAL_GL_MAX_DEBUG_MESSAGE_LENGTH_AMD                0x9143
+#define LOCAL_GL_MAX_DEBUG_MESSAGE_LENGTH_ARB                0x9143
+#define LOCAL_GL_MAX_DEBUG_MESSAGE_LENGTH_KHR                0x9143
+#define LOCAL_GL_MAX_DEEP_3D_TEXTURE_DEPTH_NV                0x90D1
+#define LOCAL_GL_MAX_DEEP_3D_TEXTURE_WIDTH_HEIGHT_NV         0x90D0
+#define LOCAL_GL_MAX_DEFORMATION_ORDER_SGIX                  0x8197
+#define LOCAL_GL_MAX_DEPTH                                   0x8280
+#define LOCAL_GL_MAX_DEPTH_STENCIL_FRAMEBUFFER_SAMPLES_AMD   0x91B5
+#define LOCAL_GL_MAX_DEPTH_TEXTURE_SAMPLES                   0x910F
+#define LOCAL_GL_MAX_DETACHED_BUFFERS_NV                     0x95AD
+#define LOCAL_GL_MAX_DETACHED_TEXTURES_NV                    0x95AC
+#define LOCAL_GL_MAX_DRAW_BUFFERS                            0x8824
+#define LOCAL_GL_MAX_DRAW_BUFFERS_ARB                        0x8824
+#define LOCAL_GL_MAX_DRAW_BUFFERS_ATI                        0x8824
+#define LOCAL_GL_MAX_DRAW_BUFFERS_EXT                        0x8824
+#define LOCAL_GL_MAX_DRAW_BUFFERS_NV                         0x8824
+#define LOCAL_GL_MAX_DRAW_MESH_TASKS_COUNT_NV                0x953D
+#define LOCAL_GL_MAX_DUAL_SOURCE_DRAW_BUFFERS                0x88FC
+#define LOCAL_GL_MAX_DUAL_SOURCE_DRAW_BUFFERS_EXT            0x88FC
+#define LOCAL_GL_MAX_ELEMENTS_INDICES                        0x80E9
+#define LOCAL_GL_MAX_ELEMENTS_INDICES_EXT                    0x80E9
+#define LOCAL_GL_MAX_ELEMENTS_VERTICES                       0x80E8
+#define LOCAL_GL_MAX_ELEMENTS_VERTICES_EXT                   0x80E8
+#define LOCAL_GL_MAX_ELEMENT_INDEX                           0x8D6B
+#define LOCAL_GL_MAX_EVAL_ORDER                              0x0D30
+#define LOCAL_GL_MAX_EXT                                     0x8008
+#define LOCAL_GL_MAX_FOG_FUNC_POINTS_SGIS                    0x812C
+#define LOCAL_GL_MAX_FRAGMENT_ATOMIC_COUNTERS                0x92D6
+#define LOCAL_GL_MAX_FRAGMENT_ATOMIC_COUNTER_BUFFERS         0x92D0
+#define LOCAL_GL_MAX_FRAGMENT_BINDABLE_UNIFORMS_EXT          0x8DE3
+#define LOCAL_GL_MAX_FRAGMENT_IMAGE_UNIFORMS                 0x90CE
+#define LOCAL_GL_MAX_FRAGMENT_INPUT_COMPONENTS               0x9125
+#define LOCAL_GL_MAX_FRAGMENT_INTERPOLATION_OFFSET           0x8E5C
+#define LOCAL_GL_MAX_FRAGMENT_INTERPOLATION_OFFSET_NV        0x8E5C
+#define LOCAL_GL_MAX_FRAGMENT_INTERPOLATION_OFFSET_OES       0x8E5C
+#define LOCAL_GL_MAX_FRAGMENT_LIGHTS_SGIX                    0x8404
+#define LOCAL_GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV    0x8868
+#define LOCAL_GL_MAX_FRAGMENT_SHADER_STORAGE_BLOCKS          0x90DA
+#define LOCAL_GL_MAX_FRAGMENT_UNIFORM_BLOCKS                 0x8A2D
+#define LOCAL_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS             0x8B49
+#define LOCAL_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB         0x8B49
+#define LOCAL_GL_MAX_FRAGMENT_UNIFORM_VECTORS                0x8DFD
+#define LOCAL_GL_MAX_FRAMEBUFFER_HEIGHT                      0x9316
+#define LOCAL_GL_MAX_FRAMEBUFFER_LAYERS                      0x9317
+#define LOCAL_GL_MAX_FRAMEBUFFER_LAYERS_EXT                  0x9317
+#define LOCAL_GL_MAX_FRAMEBUFFER_LAYERS_OES                  0x9317
+#define LOCAL_GL_MAX_FRAMEBUFFER_SAMPLES                     0x9318
+#define LOCAL_GL_MAX_FRAMEBUFFER_WIDTH                       0x9315
+#define LOCAL_GL_MAX_FRAMEZOOM_FACTOR_SGIX                   0x818D
+#define LOCAL_GL_MAX_GENERAL_COMBINERS_NV                    0x854D
+#define LOCAL_GL_MAX_GEOMETRY_ATOMIC_COUNTERS                0x92D5
+#define LOCAL_GL_MAX_GEOMETRY_ATOMIC_COUNTERS_EXT            0x92D5
+#define LOCAL_GL_MAX_GEOMETRY_ATOMIC_COUNTERS_OES            0x92D5
+#define LOCAL_GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS         0x92CF
+#define LOCAL_GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS_EXT     0x92CF
+#define LOCAL_GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS_OES     0x92CF
+#define LOCAL_GL_MAX_GEOMETRY_BINDABLE_UNIFORMS_EXT          0x8DE4
+#define LOCAL_GL_MAX_GEOMETRY_IMAGE_UNIFORMS                 0x90CD
+#define LOCAL_GL_MAX_GEOMETRY_IMAGE_UNIFORMS_EXT             0x90CD
+#define LOCAL_GL_MAX_GEOMETRY_IMAGE_UNIFORMS_OES             0x90CD
+#define LOCAL_GL_MAX_GEOMETRY_INPUT_COMPONENTS               0x9123
+#define LOCAL_GL_MAX_GEOMETRY_INPUT_COMPONENTS_EXT           0x9123
+#define LOCAL_GL_MAX_GEOMETRY_INPUT_COMPONENTS_OES           0x9123
+#define LOCAL_GL_MAX_GEOMETRY_OUTPUT_COMPONENTS              0x9124
+#define LOCAL_GL_MAX_GEOMETRY_OUTPUT_COMPONENTS_EXT          0x9124
+#define LOCAL_GL_MAX_GEOMETRY_OUTPUT_COMPONENTS_OES          0x9124
+#define LOCAL_GL_MAX_GEOMETRY_OUTPUT_VERTICES                0x8DE0
+#define LOCAL_GL_MAX_GEOMETRY_OUTPUT_VERTICES_ARB            0x8DE0
+#define LOCAL_GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT            0x8DE0
+#define LOCAL_GL_MAX_GEOMETRY_OUTPUT_VERTICES_OES            0x8DE0
+#define LOCAL_GL_MAX_GEOMETRY_PROGRAM_INVOCATIONS_NV         0x8E5A
+#define LOCAL_GL_MAX_GEOMETRY_SHADER_INVOCATIONS             0x8E5A
+#define LOCAL_GL_MAX_GEOMETRY_SHADER_INVOCATIONS_EXT         0x8E5A
+#define LOCAL_GL_MAX_GEOMETRY_SHADER_INVOCATIONS_OES         0x8E5A
+#define LOCAL_GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS          0x90D7
+#define LOCAL_GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS_EXT      0x90D7
+#define LOCAL_GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS_OES      0x90D7
+#define LOCAL_GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS            0x8C29
+#define LOCAL_GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_ARB        0x8C29
+#define LOCAL_GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT        0x8C29
+#define LOCAL_GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_OES        0x8C29
+#define LOCAL_GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS        0x8DE1
+#define LOCAL_GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB    0x8DE1
+#define LOCAL_GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT    0x8DE1
+#define LOCAL_GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_OES    0x8DE1
+#define LOCAL_GL_MAX_GEOMETRY_UNIFORM_BLOCKS                 0x8A2C
+#define LOCAL_GL_MAX_GEOMETRY_UNIFORM_BLOCKS_EXT             0x8A2C
+#define LOCAL_GL_MAX_GEOMETRY_UNIFORM_BLOCKS_OES             0x8A2C
+#define LOCAL_GL_MAX_GEOMETRY_UNIFORM_COMPONENTS             0x8DDF
+#define LOCAL_GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB         0x8DDF
+#define LOCAL_GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT         0x8DDF
+#define LOCAL_GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_OES         0x8DDF
+#define LOCAL_GL_MAX_GEOMETRY_VARYING_COMPONENTS_ARB         0x8DDD
+#define LOCAL_GL_MAX_GEOMETRY_VARYING_COMPONENTS_EXT         0x8DDD
+#define LOCAL_GL_MAX_HEIGHT                                  0x827F
+#define LOCAL_GL_MAX_IMAGE_SAMPLES                           0x906D
+#define LOCAL_GL_MAX_IMAGE_SAMPLES_EXT                       0x906D
+#define LOCAL_GL_MAX_IMAGE_UNITS                             0x8F38
+#define LOCAL_GL_MAX_IMAGE_UNITS_EXT                         0x8F38
+#define LOCAL_GL_MAX_INTEGER_SAMPLES                         0x9110
+#define LOCAL_GL_MAX_LABEL_LENGTH                            0x82E8
+#define LOCAL_GL_MAX_LABEL_LENGTH_KHR                        0x82E8
+#define LOCAL_GL_MAX_LAYERS                                  0x8281
+#define LOCAL_GL_MAX_LGPU_GPUS_NVX                           0x92BA
+#define LOCAL_GL_MAX_LIGHTS                                  0x0D31
+#define LOCAL_GL_MAX_LIST_NESTING                            0x0B31
+#define LOCAL_GL_MAX_MAP_TESSELLATION_NV                     0x86D6
+#define LOCAL_GL_MAX_MATRIX_PALETTE_STACK_DEPTH_ARB          0x8841
+#define LOCAL_GL_MAX_MESH_ATOMIC_COUNTERS_NV                 0x8E65
+#define LOCAL_GL_MAX_MESH_ATOMIC_COUNTER_BUFFERS_NV          0x8E64
+#define LOCAL_GL_MAX_MESH_IMAGE_UNIFORMS_NV                  0x8E62
+#define LOCAL_GL_MAX_MESH_OUTPUT_PRIMITIVES_NV               0x9539
+#define LOCAL_GL_MAX_MESH_OUTPUT_VERTICES_NV                 0x9538
+#define LOCAL_GL_MAX_MESH_SHADER_STORAGE_BLOCKS_NV           0x8E66
+#define LOCAL_GL_MAX_MESH_TEXTURE_IMAGE_UNITS_NV             0x8E61
+#define LOCAL_GL_MAX_MESH_TOTAL_MEMORY_SIZE_NV               0x9536
+#define LOCAL_GL_MAX_MESH_UNIFORM_BLOCKS_NV                  0x8E60
+#define LOCAL_GL_MAX_MESH_UNIFORM_COMPONENTS_NV              0x8E63
+#define LOCAL_GL_MAX_MESH_VIEWS_NV                           0x9557
+#define LOCAL_GL_MAX_MESH_WORK_GROUP_INVOCATIONS_NV          0x95A2
+#define LOCAL_GL_MAX_MESH_WORK_GROUP_SIZE_NV                 0x953B
+#define LOCAL_GL_MAX_MODELVIEW_STACK_DEPTH                   0x0D36
+#define LOCAL_GL_MAX_MULTISAMPLE_COVERAGE_MODES_NV           0x8E11
+#define LOCAL_GL_MAX_MULTIVIEW_BUFFERS_EXT                   0x90F2
+#define LOCAL_GL_MAX_NAME_LENGTH                             0x92F6
+#define LOCAL_GL_MAX_NAME_STACK_DEPTH                        0x0D37
+#define LOCAL_GL_MAX_NUM_ACTIVE_VARIABLES                    0x92F7
+#define LOCAL_GL_MAX_NUM_COMPATIBLE_SUBROUTINES              0x92F8
+#define LOCAL_GL_MAX_OPTIMIZED_VERTEX_SHADER_INSTRUCTIONS_EXT        0x87CA
+#define LOCAL_GL_MAX_OPTIMIZED_VERTEX_SHADER_INVARIANTS_EXT  0x87CD
+#define LOCAL_GL_MAX_OPTIMIZED_VERTEX_SHADER_LOCALS_EXT      0x87CE
+#define LOCAL_GL_MAX_OPTIMIZED_VERTEX_SHADER_LOCAL_CONSTANTS_EXT     0x87CC
+#define LOCAL_GL_MAX_OPTIMIZED_VERTEX_SHADER_VARIANTS_EXT    0x87CB
+#define LOCAL_GL_MAX_PALETTE_MATRICES_ARB                    0x8842
+#define LOCAL_GL_MAX_PALETTE_MATRICES_OES                    0x8842
+#define LOCAL_GL_MAX_PATCH_VERTICES                          0x8E7D
+#define LOCAL_GL_MAX_PATCH_VERTICES_EXT                      0x8E7D
+#define LOCAL_GL_MAX_PATCH_VERTICES_OES                      0x8E7D
+#define LOCAL_GL_MAX_PIXEL_MAP_TABLE                         0x0D34
+#define LOCAL_GL_MAX_PIXEL_TRANSFORM_2D_STACK_DEPTH_EXT      0x8337
+#define LOCAL_GL_MAX_PN_TRIANGLES_TESSELATION_LEVEL_ATI      0x87F1
+#define LOCAL_GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB           0x88B1
+#define LOCAL_GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB            0x880B
+#define LOCAL_GL_MAX_PROGRAM_ATTRIBS_ARB                     0x88AD
+#define LOCAL_GL_MAX_PROGRAM_ATTRIB_COMPONENTS_NV            0x8908
+#define LOCAL_GL_MAX_PROGRAM_CALL_DEPTH_NV                   0x88F5
+#define LOCAL_GL_MAX_PROGRAM_ENV_PARAMETERS_ARB              0x88B5
+#define LOCAL_GL_MAX_PROGRAM_EXEC_INSTRUCTIONS_NV            0x88F4
+#define LOCAL_GL_MAX_PROGRAM_GENERIC_ATTRIBS_NV              0x8DA5
+#define LOCAL_GL_MAX_PROGRAM_GENERIC_RESULTS_NV              0x8DA6
+#define LOCAL_GL_MAX_PROGRAM_IF_DEPTH_NV                     0x88F6
+#define LOCAL_GL_MAX_PROGRAM_INSTRUCTIONS_ARB                0x88A1
+#define LOCAL_GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB            0x88B4
+#define LOCAL_GL_MAX_PROGRAM_LOOP_COUNT_NV                   0x88F8
+#define LOCAL_GL_MAX_PROGRAM_LOOP_DEPTH_NV                   0x88F7
+#define LOCAL_GL_MAX_PROGRAM_MATRICES_ARB                    0x862F
+#define LOCAL_GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB          0x862E
+#define LOCAL_GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB    0x88B3
+#define LOCAL_GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB     0x880E
+#define LOCAL_GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB              0x88AF
+#define LOCAL_GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB         0x88A3
+#define LOCAL_GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB           0x88AB
+#define LOCAL_GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB          0x88A7
+#define LOCAL_GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB     0x8810
+#define LOCAL_GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB     0x880F
+#define LOCAL_GL_MAX_PROGRAM_OUTPUT_VERTICES_NV              0x8C27
+#define LOCAL_GL_MAX_PROGRAM_PARAMETERS_ARB                  0x88A9
+#define LOCAL_GL_MAX_PROGRAM_PARAMETER_BUFFER_BINDINGS_NV    0x8DA0
+#define LOCAL_GL_MAX_PROGRAM_PARAMETER_BUFFER_SIZE_NV        0x8DA1
+#define LOCAL_GL_MAX_PROGRAM_PATCH_ATTRIBS_NV                0x86D8
+#define LOCAL_GL_MAX_PROGRAM_RESULT_COMPONENTS_NV            0x8909
+#define LOCAL_GL_MAX_PROGRAM_SUBROUTINE_NUM_NV               0x8F45
+#define LOCAL_GL_MAX_PROGRAM_SUBROUTINE_PARAMETERS_NV        0x8F44
+#define LOCAL_GL_MAX_PROGRAM_TEMPORARIES_ARB                 0x88A5
+#define LOCAL_GL_MAX_PROGRAM_TEXEL_OFFSET                    0x8905
+#define LOCAL_GL_MAX_PROGRAM_TEXEL_OFFSET_EXT                0x8905
+#define LOCAL_GL_MAX_PROGRAM_TEXEL_OFFSET_NV                 0x8905
+#define LOCAL_GL_MAX_PROGRAM_TEXTURE_GATHER_COMPONENTS_ARB   0x8F9F
+#define LOCAL_GL_MAX_PROGRAM_TEXTURE_GATHER_OFFSET           0x8E5F
+#define LOCAL_GL_MAX_PROGRAM_TEXTURE_GATHER_OFFSET_ARB       0x8E5F
+#define LOCAL_GL_MAX_PROGRAM_TEXTURE_GATHER_OFFSET_NV        0x8E5F
+#define LOCAL_GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB            0x880D
+#define LOCAL_GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB            0x880C
+#define LOCAL_GL_MAX_PROGRAM_TOTAL_OUTPUT_COMPONENTS_NV      0x8C28
+#define LOCAL_GL_MAX_PROJECTION_STACK_DEPTH                  0x0D38
+#define LOCAL_GL_MAX_RASTER_SAMPLES_EXT                      0x9329
+#define LOCAL_GL_MAX_RATIONAL_EVAL_ORDER_NV                  0x86D7
+#define LOCAL_GL_MAX_RECTANGLE_TEXTURE_SIZE                  0x84F8
+#define LOCAL_GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB              0x84F8
+#define LOCAL_GL_MAX_RECTANGLE_TEXTURE_SIZE_NV               0x84F8
+#define LOCAL_GL_MAX_RENDERBUFFER_SIZE                       0x84E8
+#define LOCAL_GL_MAX_RENDERBUFFER_SIZE_EXT                   0x84E8
+#define LOCAL_GL_MAX_RENDERBUFFER_SIZE_OES                   0x84E8
+#define LOCAL_GL_MAX_SAMPLES                                 0x8D57
+#define LOCAL_GL_MAX_SAMPLES_ANGLE                           0x8D57
+#define LOCAL_GL_MAX_SAMPLES_APPLE                           0x8D57
+#define LOCAL_GL_MAX_SAMPLES_EXT                             0x8D57
+#define LOCAL_GL_MAX_SAMPLES_IMG                             0x9135
+#define LOCAL_GL_MAX_SAMPLES_NV                              0x8D57
+#define LOCAL_GL_MAX_SAMPLE_MASK_WORDS                       0x8E59
+#define LOCAL_GL_MAX_SAMPLE_MASK_WORDS_NV                    0x8E59
+#define LOCAL_GL_MAX_SERVER_WAIT_TIMEOUT                     0x9111
+#define LOCAL_GL_MAX_SERVER_WAIT_TIMEOUT_APPLE               0x9111
+#define LOCAL_GL_MAX_SHADER_BUFFER_ADDRESS_NV                0x8F35
+#define LOCAL_GL_MAX_SHADER_COMBINED_LOCAL_STORAGE_FAST_SIZE_EXT     0x9650
+#define LOCAL_GL_MAX_SHADER_COMBINED_LOCAL_STORAGE_SIZE_EXT  0x9651
+#define LOCAL_GL_MAX_SHADER_COMPILER_THREADS_ARB             0x91B0
+#define LOCAL_GL_MAX_SHADER_COMPILER_THREADS_KHR             0x91B0
+#define LOCAL_GL_MAX_SHADER_PIXEL_LOCAL_STORAGE_FAST_SIZE_EXT        0x8F63
+#define LOCAL_GL_MAX_SHADER_PIXEL_LOCAL_STORAGE_SIZE_EXT     0x8F67
+#define LOCAL_GL_MAX_SHADER_STORAGE_BLOCK_SIZE               0x90DE
+#define LOCAL_GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS          0x90DD
+#define LOCAL_GL_MAX_SHADER_SUBSAMPLED_IMAGE_UNITS_QCOM      0x8FA1
+#define LOCAL_GL_MAX_SHININESS_NV                            0x8504
+#define LOCAL_GL_MAX_SPARSE_3D_TEXTURE_SIZE_AMD              0x9199
+#define LOCAL_GL_MAX_SPARSE_3D_TEXTURE_SIZE_ARB              0x9199
+#define LOCAL_GL_MAX_SPARSE_3D_TEXTURE_SIZE_EXT              0x9199
+#define LOCAL_GL_MAX_SPARSE_ARRAY_TEXTURE_LAYERS             0x919A
+#define LOCAL_GL_MAX_SPARSE_ARRAY_TEXTURE_LAYERS_ARB         0x919A
+#define LOCAL_GL_MAX_SPARSE_ARRAY_TEXTURE_LAYERS_EXT         0x919A
+#define LOCAL_GL_MAX_SPARSE_TEXTURE_SIZE_AMD                 0x9198
+#define LOCAL_GL_MAX_SPARSE_TEXTURE_SIZE_ARB                 0x9198
+#define LOCAL_GL_MAX_SPARSE_TEXTURE_SIZE_EXT                 0x9198
+#define LOCAL_GL_MAX_SPOT_EXPONENT_NV                        0x8505
+#define LOCAL_GL_MAX_SUBPIXEL_PRECISION_BIAS_BITS_NV         0x9349
+#define LOCAL_GL_MAX_SUBROUTINES                             0x8DE7
+#define LOCAL_GL_MAX_SUBROUTINE_UNIFORM_LOCATIONS            0x8DE8
+#define LOCAL_GL_MAX_TASK_ATOMIC_COUNTERS_NV                 0x8E6D
+#define LOCAL_GL_MAX_TASK_ATOMIC_COUNTER_BUFFERS_NV          0x8E6C
+#define LOCAL_GL_MAX_TASK_IMAGE_UNIFORMS_NV                  0x8E6A
+#define LOCAL_GL_MAX_TASK_OUTPUT_COUNT_NV                    0x953A
+#define LOCAL_GL_MAX_TASK_SHADER_STORAGE_BLOCKS_NV           0x8E6E
+#define LOCAL_GL_MAX_TASK_TEXTURE_IMAGE_UNITS_NV             0x8E69
+#define LOCAL_GL_MAX_TASK_TOTAL_MEMORY_SIZE_NV               0x9537
+#define LOCAL_GL_MAX_TASK_UNIFORM_BLOCKS_NV                  0x8E68
+#define LOCAL_GL_MAX_TASK_UNIFORM_COMPONENTS_NV              0x8E6B
+#define LOCAL_GL_MAX_TASK_WORK_GROUP_INVOCATIONS_NV          0x95A3
+#define LOCAL_GL_MAX_TASK_WORK_GROUP_SIZE_NV                 0x953C
+#define LOCAL_GL_MAX_TESS_CONTROL_ATOMIC_COUNTERS            0x92D3
+#define LOCAL_GL_MAX_TESS_CONTROL_ATOMIC_COUNTERS_EXT        0x92D3
+#define LOCAL_GL_MAX_TESS_CONTROL_ATOMIC_COUNTERS_OES        0x92D3
+#define LOCAL_GL_MAX_TESS_CONTROL_ATOMIC_COUNTER_BUFFERS     0x92CD
+#define LOCAL_GL_MAX_TESS_CONTROL_ATOMIC_COUNTER_BUFFERS_EXT 0x92CD
+#define LOCAL_GL_MAX_TESS_CONTROL_ATOMIC_COUNTER_BUFFERS_OES 0x92CD
+#define LOCAL_GL_MAX_TESS_CONTROL_IMAGE_UNIFORMS             0x90CB
+#define LOCAL_GL_MAX_TESS_CONTROL_IMAGE_UNIFORMS_EXT         0x90CB
+#define LOCAL_GL_MAX_TESS_CONTROL_IMAGE_UNIFORMS_OES         0x90CB
+#define LOCAL_GL_MAX_TESS_CONTROL_INPUT_COMPONENTS           0x886C
+#define LOCAL_GL_MAX_TESS_CONTROL_INPUT_COMPONENTS_EXT       0x886C
+#define LOCAL_GL_MAX_TESS_CONTROL_INPUT_COMPONENTS_OES       0x886C
+#define LOCAL_GL_MAX_TESS_CONTROL_OUTPUT_COMPONENTS          0x8E83
+#define LOCAL_GL_MAX_TESS_CONTROL_OUTPUT_COMPONENTS_EXT      0x8E83
+#define LOCAL_GL_MAX_TESS_CONTROL_OUTPUT_COMPONENTS_OES      0x8E83
+#define LOCAL_GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS      0x90D8
+#define LOCAL_GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS_EXT  0x90D8
+#define LOCAL_GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS_OES  0x90D8
+#define LOCAL_GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS        0x8E81
+#define LOCAL_GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS_EXT    0x8E81
+#define LOCAL_GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS_OES    0x8E81
+#define LOCAL_GL_MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS    0x8E85
+#define LOCAL_GL_MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS_EXT        0x8E85
+#define LOCAL_GL_MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS_OES        0x8E85
+#define LOCAL_GL_MAX_TESS_CONTROL_UNIFORM_BLOCKS             0x8E89
+#define LOCAL_GL_MAX_TESS_CONTROL_UNIFORM_BLOCKS_EXT         0x8E89
+#define LOCAL_GL_MAX_TESS_CONTROL_UNIFORM_BLOCKS_OES         0x8E89
+#define LOCAL_GL_MAX_TESS_CONTROL_UNIFORM_COMPONENTS         0x8E7F
+#define LOCAL_GL_MAX_TESS_CONTROL_UNIFORM_COMPONENTS_EXT     0x8E7F
+#define LOCAL_GL_MAX_TESS_CONTROL_UNIFORM_COMPONENTS_OES     0x8E7F
+#define LOCAL_GL_MAX_TESS_EVALUATION_ATOMIC_COUNTERS         0x92D4
+#define LOCAL_GL_MAX_TESS_EVALUATION_ATOMIC_COUNTERS_EXT     0x92D4
+#define LOCAL_GL_MAX_TESS_EVALUATION_ATOMIC_COUNTERS_OES     0x92D4
+#define LOCAL_GL_MAX_TESS_EVALUATION_ATOMIC_COUNTER_BUFFERS  0x92CE
+#define LOCAL_GL_MAX_TESS_EVALUATION_ATOMIC_COUNTER_BUFFERS_EXT      0x92CE
+#define LOCAL_GL_MAX_TESS_EVALUATION_ATOMIC_COUNTER_BUFFERS_OES      0x92CE
+#define LOCAL_GL_MAX_TESS_EVALUATION_IMAGE_UNIFORMS          0x90CC
+#define LOCAL_GL_MAX_TESS_EVALUATION_IMAGE_UNIFORMS_EXT      0x90CC
+#define LOCAL_GL_MAX_TESS_EVALUATION_IMAGE_UNIFORMS_OES      0x90CC
+#define LOCAL_GL_MAX_TESS_EVALUATION_INPUT_COMPONENTS        0x886D
+#define LOCAL_GL_MAX_TESS_EVALUATION_INPUT_COMPONENTS_EXT    0x886D
+#define LOCAL_GL_MAX_TESS_EVALUATION_INPUT_COMPONENTS_OES    0x886D
+#define LOCAL_GL_MAX_TESS_EVALUATION_OUTPUT_COMPONENTS       0x8E86
+#define LOCAL_GL_MAX_TESS_EVALUATION_OUTPUT_COMPONENTS_EXT   0x8E86
+#define LOCAL_GL_MAX_TESS_EVALUATION_OUTPUT_COMPONENTS_OES   0x8E86
+#define LOCAL_GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS   0x90D9
+#define LOCAL_GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS_EXT       0x90D9
+#define LOCAL_GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS_OES       0x90D9
+#define LOCAL_GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS     0x8E82
+#define LOCAL_GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS_EXT 0x8E82
+#define LOCAL_GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS_OES 0x8E82
+#define LOCAL_GL_MAX_TESS_EVALUATION_UNIFORM_BLOCKS          0x8E8A
+#define LOCAL_GL_MAX_TESS_EVALUATION_UNIFORM_BLOCKS_EXT      0x8E8A
+#define LOCAL_GL_MAX_TESS_EVALUATION_UNIFORM_BLOCKS_OES      0x8E8A
+#define LOCAL_GL_MAX_TESS_EVALUATION_UNIFORM_COMPONENTS      0x8E80
+#define LOCAL_GL_MAX_TESS_EVALUATION_UNIFORM_COMPONENTS_EXT  0x8E80
+#define LOCAL_GL_MAX_TESS_EVALUATION_UNIFORM_COMPONENTS_OES  0x8E80
+#define LOCAL_GL_MAX_TESS_GEN_LEVEL                          0x8E7E
+#define LOCAL_GL_MAX_TESS_GEN_LEVEL_EXT                      0x8E7E
+#define LOCAL_GL_MAX_TESS_GEN_LEVEL_OES                      0x8E7E
+#define LOCAL_GL_MAX_TESS_PATCH_COMPONENTS                   0x8E84
+#define LOCAL_GL_MAX_TESS_PATCH_COMPONENTS_EXT               0x8E84
+#define LOCAL_GL_MAX_TESS_PATCH_COMPONENTS_OES               0x8E84
+#define LOCAL_GL_MAX_TEXTURE_BUFFER_SIZE                     0x8C2B
+#define LOCAL_GL_MAX_TEXTURE_BUFFER_SIZE_ARB                 0x8C2B
+#define LOCAL_GL_MAX_TEXTURE_BUFFER_SIZE_EXT                 0x8C2B
+#define LOCAL_GL_MAX_TEXTURE_BUFFER_SIZE_OES                 0x8C2B
+#define LOCAL_GL_MAX_TEXTURE_COORDS                          0x8871
+#define LOCAL_GL_MAX_TEXTURE_COORDS_ARB                      0x8871
+#define LOCAL_GL_MAX_TEXTURE_COORDS_NV                       0x8871
+#define LOCAL_GL_MAX_TEXTURE_IMAGE_UNITS                     0x8872
+#define LOCAL_GL_MAX_TEXTURE_IMAGE_UNITS_ARB                 0x8872
+#define LOCAL_GL_MAX_TEXTURE_IMAGE_UNITS_NV                  0x8872
+#define LOCAL_GL_MAX_TEXTURE_LOD_BIAS                        0x84FD
+#define LOCAL_GL_MAX_TEXTURE_LOD_BIAS_EXT                    0x84FD
+#define LOCAL_GL_MAX_TEXTURE_MAX_ANISOTROPY                  0x84FF
+#define LOCAL_GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT              0x84FF
+#define LOCAL_GL_MAX_TEXTURE_SIZE                            0x0D33
+#define LOCAL_GL_MAX_TEXTURE_STACK_DEPTH                     0x0D39
+#define LOCAL_GL_MAX_TEXTURE_UNITS                           0x84E2
+#define LOCAL_GL_MAX_TEXTURE_UNITS_ARB                       0x84E2
+#define LOCAL_GL_MAX_TIMELINE_SEMAPHORE_VALUE_DIFFERENCE_NV  0x95B6
+#define LOCAL_GL_MAX_TRACK_MATRICES_NV                       0x862F
+#define LOCAL_GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV             0x862E
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_BUFFERS              0x8E70
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS       0x8C8A
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS_EXT   0x8C8A
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS_NV    0x8C8A
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS     0x8C8B
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS_EXT 0x8C8B
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS_NV  0x8C8B
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS  0x8C80
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS_EXT      0x8C80
+#define LOCAL_GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS_NV       0x8C80
+#define LOCAL_GL_MAX_UNIFORM_BLOCK_SIZE                      0x8A30
+#define LOCAL_GL_MAX_UNIFORM_BUFFER_BINDINGS                 0x8A2F
+#define LOCAL_GL_MAX_UNIFORM_LOCATIONS                       0x826E
+#define LOCAL_GL_MAX_VARYING_COMPONENTS                      0x8B4B
+#define LOCAL_GL_MAX_VARYING_COMPONENTS_EXT                  0x8B4B
+#define LOCAL_GL_MAX_VARYING_FLOATS                          0x8B4B
+#define LOCAL_GL_MAX_VARYING_FLOATS_ARB                      0x8B4B
+#define LOCAL_GL_MAX_VARYING_VECTORS                         0x8DFC
+#define LOCAL_GL_MAX_VERTEX_ARRAY_RANGE_ELEMENT_NV           0x8520
+#define LOCAL_GL_MAX_VERTEX_ATOMIC_COUNTERS                  0x92D2
+#define LOCAL_GL_MAX_VERTEX_ATOMIC_COUNTER_BUFFERS           0x92CC
+#define LOCAL_GL_MAX_VERTEX_ATTRIBS                          0x8869
+#define LOCAL_GL_MAX_VERTEX_ATTRIBS_ARB                      0x8869
+#define LOCAL_GL_MAX_VERTEX_ATTRIB_BINDINGS                  0x82DA
+#define LOCAL_GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET           0x82D9
+#define LOCAL_GL_MAX_VERTEX_ATTRIB_STRIDE                    0x82E5
+#define LOCAL_GL_MAX_VERTEX_BINDABLE_UNIFORMS_EXT            0x8DE2
+#define LOCAL_GL_MAX_VERTEX_HINT_PGI                         0x1A22D
+#define LOCAL_GL_MAX_VERTEX_IMAGE_UNIFORMS                   0x90CA
+#define LOCAL_GL_MAX_VERTEX_OUTPUT_COMPONENTS                0x9122
+#define LOCAL_GL_MAX_VERTEX_SHADER_INSTRUCTIONS_EXT          0x87C5
+#define LOCAL_GL_MAX_VERTEX_SHADER_INVARIANTS_EXT            0x87C7
+#define LOCAL_GL_MAX_VERTEX_SHADER_LOCALS_EXT                0x87C9
+#define LOCAL_GL_MAX_VERTEX_SHADER_LOCAL_CONSTANTS_EXT       0x87C8
+#define LOCAL_GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS            0x90D6
+#define LOCAL_GL_MAX_VERTEX_SHADER_VARIANTS_EXT              0x87C6
+#define LOCAL_GL_MAX_VERTEX_STREAMS                          0x8E71
+#define LOCAL_GL_MAX_VERTEX_STREAMS_ATI                      0x876B
+#define LOCAL_GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS              0x8B4C
+#define LOCAL_GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB          0x8B4C
+#define LOCAL_GL_MAX_VERTEX_UNIFORM_BLOCKS                   0x8A2B
+#define LOCAL_GL_MAX_VERTEX_UNIFORM_COMPONENTS               0x8B4A
+#define LOCAL_GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB           0x8B4A
+#define LOCAL_GL_MAX_VERTEX_UNIFORM_VECTORS                  0x8DFB
+#define LOCAL_GL_MAX_VERTEX_UNITS_ARB                        0x86A4
+#define LOCAL_GL_MAX_VERTEX_UNITS_OES                        0x86A4
+#define LOCAL_GL_MAX_VERTEX_VARYING_COMPONENTS_ARB           0x8DDE
+#define LOCAL_GL_MAX_VERTEX_VARYING_COMPONENTS_EXT           0x8DDE
+#define LOCAL_GL_MAX_VIEWPORTS                               0x825B
+#define LOCAL_GL_MAX_VIEWPORTS_NV                            0x825B
+#define LOCAL_GL_MAX_VIEWPORTS_OES                           0x825B
+#define LOCAL_GL_MAX_VIEWPORT_DIMS                           0x0D3A
+#define LOCAL_GL_MAX_VIEWS_OVR                               0x9631
+#define LOCAL_GL_MAX_WIDTH                                   0x827E
+#define LOCAL_GL_MAX_WINDOW_RECTANGLES_EXT                   0x8F14
+#define LOCAL_GL_MEDIUM_FLOAT                                0x8DF1
+#define LOCAL_GL_MEDIUM_INT                                  0x8DF4
+#define LOCAL_GL_MEMORY_ATTACHABLE_ALIGNMENT_NV              0x95A6
+#define LOCAL_GL_MEMORY_ATTACHABLE_NV                        0x95A8
+#define LOCAL_GL_MEMORY_ATTACHABLE_SIZE_NV                   0x95A7
+#define LOCAL_GL_MESH_OUTPUT_PER_PRIMITIVE_GRANULARITY_NV    0x9543
+#define LOCAL_GL_MESH_OUTPUT_PER_VERTEX_GRANULARITY_NV       0x92DF
+#define LOCAL_GL_MESH_OUTPUT_TYPE_NV                         0x957B
+#define LOCAL_GL_MESH_PRIMITIVES_OUT_NV                      0x957A
+#define LOCAL_GL_MESH_SHADER_BIT_NV                          0x00000040
+#define LOCAL_GL_MESH_SHADER_NV                              0x9559
+#define LOCAL_GL_MESH_SUBROUTINE_NV                          0x957C
+#define LOCAL_GL_MESH_SUBROUTINE_UNIFORM_NV                  0x957E
+#define LOCAL_GL_MESH_VERTICES_OUT_NV                        0x9579
+#define LOCAL_GL_MESH_WORK_GROUP_SIZE_NV                     0x953E
+#define LOCAL_GL_MIN                                         0x8007
+#define LOCAL_GL_MINMAX                                      0x802E
+#define LOCAL_GL_MINMAX_EXT                                  0x802E
+#define LOCAL_GL_MINMAX_FORMAT                               0x802F
+#define LOCAL_GL_MINMAX_FORMAT_EXT                           0x802F
+#define LOCAL_GL_MINMAX_SINK                                 0x8030
+#define LOCAL_GL_MINMAX_SINK_EXT                             0x8030
+#define LOCAL_GL_MINOR_VERSION                               0x821C
+#define LOCAL_GL_MINUS_CLAMPED_NV                            0x92B3
+#define LOCAL_GL_MINUS_NV                                    0x929F
+#define LOCAL_GL_MIN_EXT                                     0x8007
+#define LOCAL_GL_MIN_FRAGMENT_INTERPOLATION_OFFSET           0x8E5B
+#define LOCAL_GL_MIN_FRAGMENT_INTERPOLATION_OFFSET_NV        0x8E5B
+#define LOCAL_GL_MIN_FRAGMENT_INTERPOLATION_OFFSET_OES       0x8E5B
+#define LOCAL_GL_MIN_LOD_WARNING_AMD                         0x919C
+#define LOCAL_GL_MIN_MAP_BUFFER_ALIGNMENT                    0x90BC
+#define LOCAL_GL_MIN_PROGRAM_TEXEL_OFFSET                    0x8904
+#define LOCAL_GL_MIN_PROGRAM_TEXEL_OFFSET_EXT                0x8904
+#define LOCAL_GL_MIN_PROGRAM_TEXEL_OFFSET_NV                 0x8904
+#define LOCAL_GL_MIN_PROGRAM_TEXTURE_GATHER_OFFSET           0x8E5E
+#define LOCAL_GL_MIN_PROGRAM_TEXTURE_GATHER_OFFSET_ARB       0x8E5E
+#define LOCAL_GL_MIN_PROGRAM_TEXTURE_GATHER_OFFSET_NV        0x8E5E
+#define LOCAL_GL_MIN_SAMPLE_SHADING_VALUE                    0x8C37
+#define LOCAL_GL_MIN_SAMPLE_SHADING_VALUE_ARB                0x8C37
+#define LOCAL_GL_MIN_SAMPLE_SHADING_VALUE_OES                0x8C37
+#define LOCAL_GL_MIN_SPARSE_LEVEL_AMD                        0x919B
+#define LOCAL_GL_MIPMAP                                      0x8293
+#define LOCAL_GL_MIRRORED_REPEAT                             0x8370
+#define LOCAL_GL_MIRRORED_REPEAT_ARB                         0x8370
+#define LOCAL_GL_MIRRORED_REPEAT_IBM                         0x8370
+#define LOCAL_GL_MIRRORED_REPEAT_OES                         0x8370
+#define LOCAL_GL_MIRROR_CLAMP_ATI                            0x8742
+#define LOCAL_GL_MIRROR_CLAMP_EXT                            0x8742
+#define LOCAL_GL_MIRROR_CLAMP_TO_BORDER_EXT                  0x8912
+#define LOCAL_GL_MIRROR_CLAMP_TO_EDGE                        0x8743
+#define LOCAL_GL_MIRROR_CLAMP_TO_EDGE_ATI                    0x8743
+#define LOCAL_GL_MIRROR_CLAMP_TO_EDGE_EXT                    0x8743
+#define LOCAL_GL_MITER_REVERT_NV                             0x90A7
+#define LOCAL_GL_MITER_TRUNCATE_NV                           0x90A8
+#define LOCAL_GL_MIXED_DEPTH_SAMPLES_SUPPORTED_NV            0x932F
+#define LOCAL_GL_MIXED_STENCIL_SAMPLES_SUPPORTED_NV          0x9330
+#define LOCAL_GL_MODELVIEW                                   0x1700
+#define LOCAL_GL_MODELVIEW0_ARB                              0x1700
+#define LOCAL_GL_MODELVIEW0_EXT                              0x1700
+#define LOCAL_GL_MODELVIEW0_MATRIX_EXT                       0x0BA6
+#define LOCAL_GL_MODELVIEW0_STACK_DEPTH_EXT                  0x0BA3
+#define LOCAL_GL_MODELVIEW10_ARB                             0x872A
+#define LOCAL_GL_MODELVIEW11_ARB                             0x872B
+#define LOCAL_GL_MODELVIEW12_ARB                             0x872C
+#define LOCAL_GL_MODELVIEW13_ARB                             0x872D
+#define LOCAL_GL_MODELVIEW14_ARB                             0x872E
+#define LOCAL_GL_MODELVIEW15_ARB                             0x872F
+#define LOCAL_GL_MODELVIEW16_ARB                             0x8730
+#define LOCAL_GL_MODELVIEW17_ARB                             0x8731
+#define LOCAL_GL_MODELVIEW18_ARB                             0x8732
+#define LOCAL_GL_MODELVIEW19_ARB                             0x8733
+#define LOCAL_GL_MODELVIEW1_ARB                              0x850A
+#define LOCAL_GL_MODELVIEW1_EXT                              0x850A
+#define LOCAL_GL_MODELVIEW1_MATRIX_EXT                       0x8506
+#define LOCAL_GL_MODELVIEW1_STACK_DEPTH_EXT                  0x8502
+#define LOCAL_GL_MODELVIEW20_ARB                             0x8734
+#define LOCAL_GL_MODELVIEW21_ARB                             0x8735
+#define LOCAL_GL_MODELVIEW22_ARB                             0x8736
+#define LOCAL_GL_MODELVIEW23_ARB                             0x8737
+#define LOCAL_GL_MODELVIEW24_ARB                             0x8738
+#define LOCAL_GL_MODELVIEW25_ARB                             0x8739
+#define LOCAL_GL_MODELVIEW26_ARB                             0x873A
+#define LOCAL_GL_MODELVIEW27_ARB                             0x873B
+#define LOCAL_GL_MODELVIEW28_ARB                             0x873C
+#define LOCAL_GL_MODELVIEW29_ARB                             0x873D
+#define LOCAL_GL_MODELVIEW2_ARB                              0x8722
+#define LOCAL_GL_MODELVIEW30_ARB                             0x873E
+#define LOCAL_GL_MODELVIEW31_ARB                             0x873F
+#define LOCAL_GL_MODELVIEW3_ARB                              0x8723
+#define LOCAL_GL_MODELVIEW4_ARB                              0x8724
+#define LOCAL_GL_MODELVIEW5_ARB                              0x8725
+#define LOCAL_GL_MODELVIEW6_ARB                              0x8726
+#define LOCAL_GL_MODELVIEW7_ARB                              0x8727
+#define LOCAL_GL_MODELVIEW8_ARB                              0x8728
+#define LOCAL_GL_MODELVIEW9_ARB                              0x8729
+#define LOCAL_GL_MODELVIEW_MATRIX                            0x0BA6
+#define LOCAL_GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES      0x898D
+#define LOCAL_GL_MODELVIEW_PROJECTION_NV                     0x8629
+#define LOCAL_GL_MODELVIEW_STACK_DEPTH                       0x0BA3
+#define LOCAL_GL_MODULATE                                    0x2100
+#define LOCAL_GL_MODULATE_ADD_ATI                            0x8744
+#define LOCAL_GL_MODULATE_COLOR_IMG                          0x8C04
+#define LOCAL_GL_MODULATE_SIGNED_ADD_ATI                     0x8745
+#define LOCAL_GL_MODULATE_SUBTRACT_ATI                       0x8746
+#define LOCAL_GL_MOTION_ESTIMATION_SEARCH_BLOCK_X_QCOM       0x8C90
+#define LOCAL_GL_MOTION_ESTIMATION_SEARCH_BLOCK_Y_QCOM       0x8C91
+#define LOCAL_GL_MOVE_TO_CONTINUES_NV                        0x90B6
+#define LOCAL_GL_MOVE_TO_NV                                  0x02
+#define LOCAL_GL_MOVE_TO_RESETS_NV                           0x90B5
+#define LOCAL_GL_MOV_ATI                                     0x8961
+#define LOCAL_GL_MULT                                        0x0103
+#define LOCAL_GL_MULTICAST_GPUS_NV                           0x92BA
+#define LOCAL_GL_MULTICAST_PROGRAMMABLE_SAMPLE_LOCATION_NV   0x9549
+#define LOCAL_GL_MULTIPLY                                    0x9294
+#define LOCAL_GL_MULTIPLY_KHR                                0x9294
+#define LOCAL_GL_MULTIPLY_NV                                 0x9294
+#define LOCAL_GL_MULTISAMPLE                                 0x809D
+#define LOCAL_GL_MULTISAMPLES_NV                             0x9371
+#define LOCAL_GL_MULTISAMPLE_3DFX                            0x86B2
+#define LOCAL_GL_MULTISAMPLE_ARB                             0x809D
+#define LOCAL_GL_MULTISAMPLE_BIT                             0x20000000
+#define LOCAL_GL_MULTISAMPLE_BIT_3DFX                        0x20000000
+#define LOCAL_GL_MULTISAMPLE_BIT_ARB                         0x20000000
+#define LOCAL_GL_MULTISAMPLE_BIT_EXT                         0x20000000
+#define LOCAL_GL_MULTISAMPLE_BUFFER_BIT0_QCOM                0x01000000
+#define LOCAL_GL_MULTISAMPLE_BUFFER_BIT1_QCOM                0x02000000
+#define LOCAL_GL_MULTISAMPLE_BUFFER_BIT2_QCOM                0x04000000
+#define LOCAL_GL_MULTISAMPLE_BUFFER_BIT3_QCOM                0x08000000
+#define LOCAL_GL_MULTISAMPLE_BUFFER_BIT4_QCOM                0x10000000
+#define LOCAL_GL_MULTISAMPLE_BUFFER_BIT5_QCOM                0x20000000
+#define LOCAL_GL_MULTISAMPLE_BUFFER_BIT6_QCOM                0x40000000
+#define LOCAL_GL_MULTISAMPLE_BUFFER_BIT7_QCOM                0x80000000
+#define LOCAL_GL_MULTISAMPLE_COVERAGE_MODES_NV               0x8E12
+#define LOCAL_GL_MULTISAMPLE_EXT                             0x809D
+#define LOCAL_GL_MULTISAMPLE_FILTER_HINT_NV                  0x8534
+#define LOCAL_GL_MULTISAMPLE_LINE_WIDTH_GRANULARITY          0x9382
+#define LOCAL_GL_MULTISAMPLE_LINE_WIDTH_GRANULARITY_ARB      0x9382
+#define LOCAL_GL_MULTISAMPLE_LINE_WIDTH_RANGE                0x9381
+#define LOCAL_GL_MULTISAMPLE_LINE_WIDTH_RANGE_ARB            0x9381
+#define LOCAL_GL_MULTISAMPLE_RASTERIZATION_ALLOWED_EXT       0x932B
+#define LOCAL_GL_MULTISAMPLE_SGIS                            0x809D
+#define LOCAL_GL_MULTIVIEW_EXT                               0x90F1
+#define LOCAL_GL_MUL_ATI                                     0x8964
+#define LOCAL_GL_MVP_MATRIX_EXT                              0x87E3
+#define LOCAL_GL_N3F_V3F                                     0x2A25
+#define LOCAL_GL_NAMED_STRING_LENGTH_ARB                     0x8DE9
+#define LOCAL_GL_NAMED_STRING_TYPE_ARB                       0x8DEA
+#define LOCAL_GL_NAME_LENGTH                                 0x92F9
+#define LOCAL_GL_NAME_STACK_DEPTH                            0x0D70
+#define LOCAL_GL_NAND                                        0x150E
+#define LOCAL_GL_NATIVE_GRAPHICS_BEGIN_HINT_PGI              0x1A203
+#define LOCAL_GL_NATIVE_GRAPHICS_END_HINT_PGI                0x1A204
+#define LOCAL_GL_NATIVE_GRAPHICS_HANDLE_PGI                  0x1A202
+#define LOCAL_GL_NEAREST                                     0x2600
+#define LOCAL_GL_NEAREST_CLIPMAP_LINEAR_SGIX                 0x844E
+#define LOCAL_GL_NEAREST_CLIPMAP_NEAREST_SGIX                0x844D
+#define LOCAL_GL_NEAREST_MIPMAP_LINEAR                       0x2702
+#define LOCAL_GL_NEAREST_MIPMAP_NEAREST                      0x2700
+#define LOCAL_GL_NEGATE_BIT_ATI                              0x00000004
+#define LOCAL_GL_NEGATIVE_ONE_EXT                            0x87DF
+#define LOCAL_GL_NEGATIVE_ONE_TO_ONE                         0x935E
+#define LOCAL_GL_NEGATIVE_ONE_TO_ONE_EXT                     0x935E
+#define LOCAL_GL_NEGATIVE_W_EXT                              0x87DC
+#define LOCAL_GL_NEGATIVE_X_EXT                              0x87D9
+#define LOCAL_GL_NEGATIVE_Y_EXT                              0x87DA
+#define LOCAL_GL_NEGATIVE_Z_EXT                              0x87DB
+#define LOCAL_GL_NEVER                                       0x0200
+#define LOCAL_GL_NEXT_BUFFER_NV                              -2
+#define LOCAL_GL_NEXT_VIDEO_CAPTURE_BUFFER_STATUS_NV         0x9025
+#define LOCAL_GL_NICEST                                      0x1102
+#define LOCAL_GL_NONE                                        0
+#define LOCAL_GL_NONE_OES                                    0
+#define LOCAL_GL_NOOP                                        0x1505
+#define LOCAL_GL_NOP_COMMAND_NV                              0x0001
+#define LOCAL_GL_NOR                                         0x1508
+#define LOCAL_GL_NORMALIZE                                   0x0BA1
+#define LOCAL_GL_NORMALIZED_RANGE_EXT                        0x87E0
+#define LOCAL_GL_NORMAL_ARRAY                                0x8075
+#define LOCAL_GL_NORMAL_ARRAY_ADDRESS_NV                     0x8F22
+#define LOCAL_GL_NORMAL_ARRAY_BUFFER_BINDING                 0x8897
+#define LOCAL_GL_NORMAL_ARRAY_BUFFER_BINDING_ARB             0x8897
+#define LOCAL_GL_NORMAL_ARRAY_COUNT_EXT                      0x8080
+#define LOCAL_GL_NORMAL_ARRAY_EXT                            0x8075
+#define LOCAL_GL_NORMAL_ARRAY_LENGTH_NV                      0x8F2C
+#define LOCAL_GL_NORMAL_ARRAY_LIST_IBM                       103071
+#define LOCAL_GL_NORMAL_ARRAY_LIST_STRIDE_IBM                103081
+#define LOCAL_GL_NORMAL_ARRAY_PARALLEL_POINTERS_INTEL        0x83F6
+#define LOCAL_GL_NORMAL_ARRAY_POINTER                        0x808F
+#define LOCAL_GL_NORMAL_ARRAY_POINTER_EXT                    0x808F
+#define LOCAL_GL_NORMAL_ARRAY_STRIDE                         0x807F
+#define LOCAL_GL_NORMAL_ARRAY_STRIDE_EXT                     0x807F
+#define LOCAL_GL_NORMAL_ARRAY_TYPE                           0x807E
+#define LOCAL_GL_NORMAL_ARRAY_TYPE_EXT                       0x807E
+#define LOCAL_GL_NORMAL_BIT_PGI                              0x08000000
+#define LOCAL_GL_NORMAL_MAP                                  0x8511
+#define LOCAL_GL_NORMAL_MAP_ARB                              0x8511
+#define LOCAL_GL_NORMAL_MAP_EXT                              0x8511
+#define LOCAL_GL_NORMAL_MAP_NV                               0x8511
+#define LOCAL_GL_NORMAL_MAP_OES                              0x8511
+#define LOCAL_GL_NOTEQUAL                                    0x0205
+#define LOCAL_GL_NO_ERROR                                    0
+#define LOCAL_GL_NO_RESET_NOTIFICATION                       0x8261
+#define LOCAL_GL_NO_RESET_NOTIFICATION_ARB                   0x8261
+#define LOCAL_GL_NO_RESET_NOTIFICATION_EXT                   0x8261
+#define LOCAL_GL_NO_RESET_NOTIFICATION_KHR                   0x8261
+#define LOCAL_GL_NUM_ACTIVE_VARIABLES                        0x9304
+#define LOCAL_GL_NUM_COMPATIBLE_SUBROUTINES                  0x8E4A
+#define LOCAL_GL_NUM_COMPRESSED_TEXTURE_FORMATS              0x86A2
+#define LOCAL_GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB          0x86A2
+#define LOCAL_GL_NUM_DEVICE_UUIDS_EXT                        0x9596
+#define LOCAL_GL_NUM_DOWNSAMPLE_SCALES_IMG                   0x913D
+#define LOCAL_GL_NUM_EXTENSIONS                              0x821D
+#define LOCAL_GL_NUM_FILL_STREAMS_NV                         0x8E29
+#define LOCAL_GL_NUM_FRAGMENT_CONSTANTS_ATI                  0x896F
+#define LOCAL_GL_NUM_FRAGMENT_REGISTERS_ATI                  0x896E
+#define LOCAL_GL_NUM_GENERAL_COMBINERS_NV                    0x854E
+#define LOCAL_GL_NUM_INPUT_INTERPOLATOR_COMPONENTS_ATI       0x8973
+#define LOCAL_GL_NUM_INSTRUCTIONS_PER_PASS_ATI               0x8971
+#define LOCAL_GL_NUM_INSTRUCTIONS_TOTAL_ATI                  0x8972
+#define LOCAL_GL_NUM_LOOPBACK_COMPONENTS_ATI                 0x8974
+#define LOCAL_GL_NUM_PASSES_ATI                              0x8970
+#define LOCAL_GL_NUM_PROGRAM_BINARY_FORMATS                  0x87FE
+#define LOCAL_GL_NUM_PROGRAM_BINARY_FORMATS_OES              0x87FE
+#define LOCAL_GL_NUM_SAMPLE_COUNTS                           0x9380
+#define LOCAL_GL_NUM_SHADER_BINARY_FORMATS                   0x8DF9
+#define LOCAL_GL_NUM_SHADING_LANGUAGE_VERSIONS               0x82E9
+#define LOCAL_GL_NUM_SPARSE_LEVELS_ARB                       0x91AA
+#define LOCAL_GL_NUM_SPARSE_LEVELS_EXT                       0x91AA
+#define LOCAL_GL_NUM_SPIR_V_EXTENSIONS                       0x9554
+#define LOCAL_GL_NUM_SUPPORTED_MULTISAMPLE_MODES_AMD         0x91B6
+#define LOCAL_GL_NUM_TILING_TYPES_EXT                        0x9582
+#define LOCAL_GL_NUM_VIDEO_CAPTURE_STREAMS_NV                0x9024
+#define LOCAL_GL_NUM_VIRTUAL_PAGE_SIZES_ARB                  0x91A8
+#define LOCAL_GL_NUM_VIRTUAL_PAGE_SIZES_EXT                  0x91A8
+#define LOCAL_GL_NUM_WINDOW_RECTANGLES_EXT                   0x8F15
+#define LOCAL_GL_OBJECT_ACTIVE_ATTRIBUTES_ARB                0x8B89
+#define LOCAL_GL_OBJECT_ACTIVE_ATTRIBUTE_MAX_LENGTH_ARB      0x8B8A
+#define LOCAL_GL_OBJECT_ACTIVE_UNIFORMS_ARB                  0x8B86
+#define LOCAL_GL_OBJECT_ACTIVE_UNIFORM_MAX_LENGTH_ARB        0x8B87
+#define LOCAL_GL_OBJECT_ATTACHED_OBJECTS_ARB                 0x8B85
+#define LOCAL_GL_OBJECT_BUFFER_SIZE_ATI                      0x8764
+#define LOCAL_GL_OBJECT_BUFFER_USAGE_ATI                     0x8765
+#define LOCAL_GL_OBJECT_COMPILE_STATUS_ARB                   0x8B81
+#define LOCAL_GL_OBJECT_DELETE_STATUS_ARB                    0x8B80
+#define LOCAL_GL_OBJECT_DISTANCE_TO_LINE_SGIS                0x81F3
+#define LOCAL_GL_OBJECT_DISTANCE_TO_POINT_SGIS               0x81F1
+#define LOCAL_GL_OBJECT_INFO_LOG_LENGTH_ARB                  0x8B84
+#define LOCAL_GL_OBJECT_LINEAR                               0x2401
+#define LOCAL_GL_OBJECT_LINEAR_NV                            0x2401
+#define LOCAL_GL_OBJECT_LINE_SGIS                            0x81F7
+#define LOCAL_GL_OBJECT_LINK_STATUS_ARB                      0x8B82
+#define LOCAL_GL_OBJECT_PLANE                                0x2501
+#define LOCAL_GL_OBJECT_POINT_SGIS                           0x81F5
+#define LOCAL_GL_OBJECT_SHADER_SOURCE_LENGTH_ARB             0x8B88
+#define LOCAL_GL_OBJECT_SUBTYPE_ARB                          0x8B4F
+#define LOCAL_GL_OBJECT_TYPE                                 0x9112
+#define LOCAL_GL_OBJECT_TYPE_APPLE                           0x9112
+#define LOCAL_GL_OBJECT_TYPE_ARB                             0x8B4E
+#define LOCAL_GL_OBJECT_VALIDATE_STATUS_ARB                  0x8B83
+#define LOCAL_GL_OCCLUSION_QUERY_EVENT_MASK_AMD              0x874F
+#define LOCAL_GL_OCCLUSION_TEST_HP                           0x8165
+#define LOCAL_GL_OCCLUSION_TEST_RESULT_HP                    0x8166
+#define LOCAL_GL_OFFSET                                      0x92FC
+#define LOCAL_GL_OFFSET_HILO_PROJECTIVE_TEXTURE_2D_NV        0x8856
+#define LOCAL_GL_OFFSET_HILO_PROJECTIVE_TEXTURE_RECTANGLE_NV 0x8857
+#define LOCAL_GL_OFFSET_HILO_TEXTURE_2D_NV                   0x8854
+#define LOCAL_GL_OFFSET_HILO_TEXTURE_RECTANGLE_NV            0x8855
+#define LOCAL_GL_OFFSET_PROJECTIVE_TEXTURE_2D_NV             0x8850
+#define LOCAL_GL_OFFSET_PROJECTIVE_TEXTURE_2D_SCALE_NV       0x8851
+#define LOCAL_GL_OFFSET_PROJECTIVE_TEXTURE_RECTANGLE_NV      0x8852
+#define LOCAL_GL_OFFSET_PROJECTIVE_TEXTURE_RECTANGLE_SCALE_NV        0x8853
+#define LOCAL_GL_OFFSET_TEXTURE_2D_BIAS_NV                   0x86E3
+#define LOCAL_GL_OFFSET_TEXTURE_2D_MATRIX_NV                 0x86E1
+#define LOCAL_GL_OFFSET_TEXTURE_2D_NV                        0x86E8
+#define LOCAL_GL_OFFSET_TEXTURE_2D_SCALE_NV                  0x86E2
+#define LOCAL_GL_OFFSET_TEXTURE_BIAS_NV                      0x86E3
+#define LOCAL_GL_OFFSET_TEXTURE_MATRIX_NV                    0x86E1
+#define LOCAL_GL_OFFSET_TEXTURE_RECTANGLE_NV                 0x864C
+#define LOCAL_GL_OFFSET_TEXTURE_RECTANGLE_SCALE_NV           0x864D
+#define LOCAL_GL_OFFSET_TEXTURE_SCALE_NV                     0x86E2
+#define LOCAL_GL_ONE                                         1
+#define LOCAL_GL_ONE_EXT                                     0x87DE
+#define LOCAL_GL_ONE_MINUS_CONSTANT_ALPHA                    0x8004
+#define LOCAL_GL_ONE_MINUS_CONSTANT_ALPHA_EXT                0x8004
+#define LOCAL_GL_ONE_MINUS_CONSTANT_COLOR                    0x8002
+#define LOCAL_GL_ONE_MINUS_CONSTANT_COLOR_EXT                0x8002
+#define LOCAL_GL_ONE_MINUS_DST_ALPHA                         0x0305
+#define LOCAL_GL_ONE_MINUS_DST_COLOR                         0x0307
+#define LOCAL_GL_ONE_MINUS_SRC1_ALPHA                        0x88FB
+#define LOCAL_GL_ONE_MINUS_SRC1_ALPHA_EXT                    0x88FB
+#define LOCAL_GL_ONE_MINUS_SRC1_COLOR                        0x88FA
+#define LOCAL_GL_ONE_MINUS_SRC1_COLOR_EXT                    0x88FA
+#define LOCAL_GL_ONE_MINUS_SRC_ALPHA                         0x0303
+#define LOCAL_GL_ONE_MINUS_SRC_COLOR                         0x0301
+#define LOCAL_GL_OPERAND0_ALPHA                              0x8598
+#define LOCAL_GL_OPERAND0_ALPHA_ARB                          0x8598
+#define LOCAL_GL_OPERAND0_ALPHA_EXT                          0x8598
+#define LOCAL_GL_OPERAND0_RGB                                0x8590
+#define LOCAL_GL_OPERAND0_RGB_ARB                            0x8590
+#define LOCAL_GL_OPERAND0_RGB_EXT                            0x8590
+#define LOCAL_GL_OPERAND1_ALPHA                              0x8599
+#define LOCAL_GL_OPERAND1_ALPHA_ARB                          0x8599
+#define LOCAL_GL_OPERAND1_ALPHA_EXT                          0x8599
+#define LOCAL_GL_OPERAND1_RGB                                0x8591
+#define LOCAL_GL_OPERAND1_RGB_ARB                            0x8591
+#define LOCAL_GL_OPERAND1_RGB_EXT                            0x8591
+#define LOCAL_GL_OPERAND2_ALPHA                              0x859A
+#define LOCAL_GL_OPERAND2_ALPHA_ARB                          0x859A
+#define LOCAL_GL_OPERAND2_ALPHA_EXT                          0x859A
+#define LOCAL_GL_OPERAND2_RGB                                0x8592
+#define LOCAL_GL_OPERAND2_RGB_ARB                            0x8592
+#define LOCAL_GL_OPERAND2_RGB_EXT                            0x8592
+#define LOCAL_GL_OPERAND3_ALPHA_NV                           0x859B
+#define LOCAL_GL_OPERAND3_RGB_NV                             0x8593
+#define LOCAL_GL_OPTIMAL_TILING_EXT                          0x9584
+#define LOCAL_GL_OP_ADD_EXT                                  0x8787
+#define LOCAL_GL_OP_CLAMP_EXT                                0x878E
+#define LOCAL_GL_OP_CROSS_PRODUCT_EXT                        0x8797
+#define LOCAL_GL_OP_DOT3_EXT                                 0x8784
+#define LOCAL_GL_OP_DOT4_EXT                                 0x8785
+#define LOCAL_GL_OP_EXP_BASE_2_EXT                           0x8791
+#define LOCAL_GL_OP_FLOOR_EXT                                0x878F
+#define LOCAL_GL_OP_FRAC_EXT                                 0x8789
+#define LOCAL_GL_OP_INDEX_EXT                                0x8782
+#define LOCAL_GL_OP_LOG_BASE_2_EXT                           0x8792
+#define LOCAL_GL_OP_MADD_EXT                                 0x8788
+#define LOCAL_GL_OP_MAX_EXT                                  0x878A
+#define LOCAL_GL_OP_MIN_EXT                                  0x878B
+#define LOCAL_GL_OP_MOV_EXT                                  0x8799
+#define LOCAL_GL_OP_MULTIPLY_MATRIX_EXT                      0x8798
+#define LOCAL_GL_OP_MUL_EXT                                  0x8786
+#define LOCAL_GL_OP_NEGATE_EXT                               0x8783
+#define LOCAL_GL_OP_POWER_EXT                                0x8793
+#define LOCAL_GL_OP_RECIP_EXT                                0x8794
+#define LOCAL_GL_OP_RECIP_SQRT_EXT                           0x8795
+#define LOCAL_GL_OP_ROUND_EXT                                0x8790
+#define LOCAL_GL_OP_SET_GE_EXT                               0x878C
+#define LOCAL_GL_OP_SET_LT_EXT                               0x878D
+#define LOCAL_GL_OP_SUB_EXT                                  0x8796
+#define LOCAL_GL_OR                                          0x1507
+#define LOCAL_GL_ORDER                                       0x0A01
+#define LOCAL_GL_OR_INVERTED                                 0x150D
+#define LOCAL_GL_OR_REVERSE                                  0x150B
+#define LOCAL_GL_OUTPUT_COLOR0_EXT                           0x879B
+#define LOCAL_GL_OUTPUT_COLOR1_EXT                           0x879C
+#define LOCAL_GL_OUTPUT_FOG_EXT                              0x87BD
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD0_EXT                   0x879D
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD10_EXT                  0x87A7
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD11_EXT                  0x87A8
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD12_EXT                  0x87A9
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD13_EXT                  0x87AA
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD14_EXT                  0x87AB
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD15_EXT                  0x87AC
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD16_EXT                  0x87AD
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD17_EXT                  0x87AE
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD18_EXT                  0x87AF
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD19_EXT                  0x87B0
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD1_EXT                   0x879E
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD20_EXT                  0x87B1
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD21_EXT                  0x87B2
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD22_EXT                  0x87B3
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD23_EXT                  0x87B4
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD24_EXT                  0x87B5
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD25_EXT                  0x87B6
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD26_EXT                  0x87B7
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD27_EXT                  0x87B8
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD28_EXT                  0x87B9
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD29_EXT                  0x87BA
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD2_EXT                   0x879F
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD30_EXT                  0x87BB
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD31_EXT                  0x87BC
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD3_EXT                   0x87A0
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD4_EXT                   0x87A1
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD5_EXT                   0x87A2
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD6_EXT                   0x87A3
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD7_EXT                   0x87A4
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD8_EXT                   0x87A5
+#define LOCAL_GL_OUTPUT_TEXTURE_COORD9_EXT                   0x87A6
+#define LOCAL_GL_OUTPUT_VERTEX_EXT                           0x879A
+#define LOCAL_GL_OUT_OF_MEMORY                               0x0505
+#define LOCAL_GL_OVERLAY                                     0x9296
+#define LOCAL_GL_OVERLAY_KHR                                 0x9296
+#define LOCAL_GL_OVERLAY_NV                                  0x9296
+#define LOCAL_GL_PACK_ALIGNMENT                              0x0D05
+#define LOCAL_GL_PACK_CMYK_HINT_EXT                          0x800E
+#define LOCAL_GL_PACK_COMPRESSED_BLOCK_DEPTH                 0x912D
+#define LOCAL_GL_PACK_COMPRESSED_BLOCK_HEIGHT                0x912C
+#define LOCAL_GL_PACK_COMPRESSED_BLOCK_SIZE                  0x912E
+#define LOCAL_GL_PACK_COMPRESSED_BLOCK_WIDTH                 0x912B
+#define LOCAL_GL_PACK_COMPRESSED_SIZE_SGIX                   0x831C
+#define LOCAL_GL_PACK_IMAGE_DEPTH_SGIS                       0x8131
+#define LOCAL_GL_PACK_IMAGE_HEIGHT                           0x806C
+#define LOCAL_GL_PACK_IMAGE_HEIGHT_EXT                       0x806C
+#define LOCAL_GL_PACK_INVERT_MESA                            0x8758
+#define LOCAL_GL_PACK_LSB_FIRST                              0x0D01
+#define LOCAL_GL_PACK_MAX_COMPRESSED_SIZE_SGIX               0x831B
+#define LOCAL_GL_PACK_RESAMPLE_OML                           0x8984
+#define LOCAL_GL_PACK_RESAMPLE_SGIX                          0x842E
+#define LOCAL_GL_PACK_REVERSE_ROW_ORDER_ANGLE                0x93A4
+#define LOCAL_GL_PACK_ROW_BYTES_APPLE                        0x8A15
+#define LOCAL_GL_PACK_ROW_LENGTH                             0x0D02
+#define LOCAL_GL_PACK_SKIP_IMAGES                            0x806B
+#define LOCAL_GL_PACK_SKIP_IMAGES_EXT                        0x806B
+#define LOCAL_GL_PACK_SKIP_PIXELS                            0x0D04
+#define LOCAL_GL_PACK_SKIP_ROWS                              0x0D03
+#define LOCAL_GL_PACK_SKIP_VOLUMES_SGIS                      0x8130
+#define LOCAL_GL_PACK_SUBSAMPLE_RATE_SGIX                    0x85A0
+#define LOCAL_GL_PACK_SWAP_BYTES                             0x0D00
+#define LOCAL_GL_PALETTE4_R5_G6_B5_OES                       0x8B92
+#define LOCAL_GL_PALETTE4_RGB5_A1_OES                        0x8B94
+#define LOCAL_GL_PALETTE4_RGB8_OES                           0x8B90
+#define LOCAL_GL_PALETTE4_RGBA4_OES                          0x8B93
+#define LOCAL_GL_PALETTE4_RGBA8_OES                          0x8B91
+#define LOCAL_GL_PALETTE8_R5_G6_B5_OES                       0x8B97
+#define LOCAL_GL_PALETTE8_RGB5_A1_OES                        0x8B99
+#define LOCAL_GL_PALETTE8_RGB8_OES                           0x8B95
+#define LOCAL_GL_PALETTE8_RGBA4_OES                          0x8B98
+#define LOCAL_GL_PALETTE8_RGBA8_OES                          0x8B96
+#define LOCAL_GL_PARALLEL_ARRAYS_INTEL                       0x83F4
+#define LOCAL_GL_PARAMETER_BUFFER                            0x80EE
+#define LOCAL_GL_PARAMETER_BUFFER_ARB                        0x80EE
+#define LOCAL_GL_PARAMETER_BUFFER_BINDING                    0x80EF
+#define LOCAL_GL_PARAMETER_BUFFER_BINDING_ARB                0x80EF
+#define LOCAL_GL_PARTIAL_SUCCESS_NV                          0x902E
+#define LOCAL_GL_PASS_THROUGH_NV                             0x86E6
+#define LOCAL_GL_PASS_THROUGH_TOKEN                          0x0700
+#define LOCAL_GL_PATCHES                                     0x000E
+#define LOCAL_GL_PATCHES_EXT                                 0x000E
+#define LOCAL_GL_PATCHES_OES                                 0x000E
+#define LOCAL_GL_PATCH_DEFAULT_INNER_LEVEL                   0x8E73
+#define LOCAL_GL_PATCH_DEFAULT_INNER_LEVEL_EXT               0x8E73
+#define LOCAL_GL_PATCH_DEFAULT_OUTER_LEVEL                   0x8E74
+#define LOCAL_GL_PATCH_DEFAULT_OUTER_LEVEL_EXT               0x8E74
+#define LOCAL_GL_PATCH_VERTICES                              0x8E72
+#define LOCAL_GL_PATCH_VERTICES_EXT                          0x8E72
+#define LOCAL_GL_PATCH_VERTICES_OES                          0x8E72
+#define LOCAL_GL_PATH_CLIENT_LENGTH_NV                       0x907F
+#define LOCAL_GL_PATH_COMMAND_COUNT_NV                       0x909D
+#define LOCAL_GL_PATH_COMPUTED_LENGTH_NV                     0x90A0
+#define LOCAL_GL_PATH_COORD_COUNT_NV                         0x909E
+#define LOCAL_GL_PATH_COVER_DEPTH_FUNC_NV                    0x90BF
+#define LOCAL_GL_PATH_DASH_ARRAY_COUNT_NV                    0x909F
+#define LOCAL_GL_PATH_DASH_CAPS_NV                           0x907B
+#define LOCAL_GL_PATH_DASH_OFFSET_NV                         0x907E
+#define LOCAL_GL_PATH_DASH_OFFSET_RESET_NV                   0x90B4
+#define LOCAL_GL_PATH_END_CAPS_NV                            0x9076
+#define LOCAL_GL_PATH_ERROR_POSITION_NV                      0x90AB
+#define LOCAL_GL_PATH_FILL_BOUNDING_BOX_NV                   0x90A1
+#define LOCAL_GL_PATH_FILL_COVER_MODE_NV                     0x9082
+#define LOCAL_GL_PATH_FILL_MASK_NV                           0x9081
+#define LOCAL_GL_PATH_FILL_MODE_NV                           0x9080
+#define LOCAL_GL_PATH_FOG_GEN_MODE_NV                        0x90AC
+#define LOCAL_GL_PATH_FORMAT_PS_NV                           0x9071
+#define LOCAL_GL_PATH_FORMAT_SVG_NV                          0x9070
+#define LOCAL_GL_PATH_GEN_COEFF_NV                           0x90B1
+#define LOCAL_GL_PATH_GEN_COLOR_FORMAT_NV                    0x90B2
+#define LOCAL_GL_PATH_GEN_COMPONENTS_NV                      0x90B3
+#define LOCAL_GL_PATH_GEN_MODE_NV                            0x90B0
+#define LOCAL_GL_PATH_INITIAL_DASH_CAP_NV                    0x907C
+#define LOCAL_GL_PATH_INITIAL_END_CAP_NV                     0x9077
+#define LOCAL_GL_PATH_JOIN_STYLE_NV                          0x9079
+#define LOCAL_GL_PATH_MAX_MODELVIEW_STACK_DEPTH_NV           0x0D36
+#define LOCAL_GL_PATH_MAX_PROJECTION_STACK_DEPTH_NV          0x0D38
+#define LOCAL_GL_PATH_MITER_LIMIT_NV                         0x907A
+#define LOCAL_GL_PATH_MODELVIEW_MATRIX_NV                    0x0BA6
+#define LOCAL_GL_PATH_MODELVIEW_NV                           0x1700
+#define LOCAL_GL_PATH_MODELVIEW_STACK_DEPTH_NV               0x0BA3
+#define LOCAL_GL_PATH_OBJECT_BOUNDING_BOX_NV                 0x908A
+#define LOCAL_GL_PATH_PROJECTION_MATRIX_NV                   0x0BA7
+#define LOCAL_GL_PATH_PROJECTION_NV                          0x1701
+#define LOCAL_GL_PATH_PROJECTION_STACK_DEPTH_NV              0x0BA4
+#define LOCAL_GL_PATH_STENCIL_DEPTH_OFFSET_FACTOR_NV         0x90BD
+#define LOCAL_GL_PATH_STENCIL_DEPTH_OFFSET_UNITS_NV          0x90BE
+#define LOCAL_GL_PATH_STENCIL_FUNC_NV                        0x90B7
+#define LOCAL_GL_PATH_STENCIL_REF_NV                         0x90B8
+#define LOCAL_GL_PATH_STENCIL_VALUE_MASK_NV                  0x90B9
+#define LOCAL_GL_PATH_STROKE_BOUNDING_BOX_NV                 0x90A2
+#define LOCAL_GL_PATH_STROKE_COVER_MODE_NV                   0x9083
+#define LOCAL_GL_PATH_STROKE_MASK_NV                         0x9084
+#define LOCAL_GL_PATH_STROKE_WIDTH_NV                        0x9075
+#define LOCAL_GL_PATH_TERMINAL_DASH_CAP_NV                   0x907D
+#define LOCAL_GL_PATH_TERMINAL_END_CAP_NV                    0x9078
+#define LOCAL_GL_PATH_TRANSPOSE_MODELVIEW_MATRIX_NV          0x84E3
+#define LOCAL_GL_PATH_TRANSPOSE_PROJECTION_MATRIX_NV         0x84E4
+#define LOCAL_GL_PERCENTAGE_AMD                              0x8BC3
+#define LOCAL_GL_PERFMON_GLOBAL_MODE_QCOM                    0x8FA0
+#define LOCAL_GL_PERFMON_RESULT_AMD                          0x8BC6
+#define LOCAL_GL_PERFMON_RESULT_AVAILABLE_AMD                0x8BC4
+#define LOCAL_GL_PERFMON_RESULT_SIZE_AMD                     0x8BC5
+#define LOCAL_GL_PERFORMANCE_MONITOR_AMD                     0x9152
+#define LOCAL_GL_PERFQUERY_COUNTER_DATA_BOOL32_INTEL         0x94FC
+#define LOCAL_GL_PERFQUERY_COUNTER_DATA_DOUBLE_INTEL         0x94FB
+#define LOCAL_GL_PERFQUERY_COUNTER_DATA_FLOAT_INTEL          0x94FA
+#define LOCAL_GL_PERFQUERY_COUNTER_DATA_UINT32_INTEL         0x94F8
+#define LOCAL_GL_PERFQUERY_COUNTER_DATA_UINT64_INTEL         0x94F9
+#define LOCAL_GL_PERFQUERY_COUNTER_DESC_LENGTH_MAX_INTEL     0x94FF
+#define LOCAL_GL_PERFQUERY_COUNTER_DURATION_NORM_INTEL       0x94F1
+#define LOCAL_GL_PERFQUERY_COUNTER_DURATION_RAW_INTEL        0x94F2
+#define LOCAL_GL_PERFQUERY_COUNTER_EVENT_INTEL               0x94F0
+#define LOCAL_GL_PERFQUERY_COUNTER_NAME_LENGTH_MAX_INTEL     0x94FE
+#define LOCAL_GL_PERFQUERY_COUNTER_RAW_INTEL                 0x94F4
+#define LOCAL_GL_PERFQUERY_COUNTER_THROUGHPUT_INTEL          0x94F3
+#define LOCAL_GL_PERFQUERY_COUNTER_TIMESTAMP_INTEL           0x94F5
+#define LOCAL_GL_PERFQUERY_DONOT_FLUSH_INTEL                 0x83F9
+#define LOCAL_GL_PERFQUERY_FLUSH_INTEL                       0x83FA
+#define LOCAL_GL_PERFQUERY_GLOBAL_CONTEXT_INTEL              0x00000001
+#define LOCAL_GL_PERFQUERY_GPA_EXTENDED_COUNTERS_INTEL       0x9500
+#define LOCAL_GL_PERFQUERY_QUERY_NAME_LENGTH_MAX_INTEL       0x94FD
+#define LOCAL_GL_PERFQUERY_SINGLE_CONTEXT_INTEL              0x00000000
+#define LOCAL_GL_PERFQUERY_WAIT_INTEL                        0x83FB
+#define LOCAL_GL_PERSPECTIVE_CORRECTION_HINT                 0x0C50
+#define LOCAL_GL_PERTURB_EXT                                 0x85AE
+#define LOCAL_GL_PER_GPU_STORAGE_BIT_NV                      0x0800
+#define LOCAL_GL_PER_GPU_STORAGE_NV                          0x9548
+#define LOCAL_GL_PER_STAGE_CONSTANTS_NV                      0x8535
+#define LOCAL_GL_PHONG_HINT_WIN                              0x80EB
+#define LOCAL_GL_PHONG_WIN                                   0x80EA
+#define LOCAL_GL_PINLIGHT_NV                                 0x92A8
+#define LOCAL_GL_PIXELS_PER_SAMPLE_PATTERN_X_AMD             0x91AE
+#define LOCAL_GL_PIXELS_PER_SAMPLE_PATTERN_Y_AMD             0x91AF
+#define LOCAL_GL_PIXEL_BUFFER_BARRIER_BIT                    0x00000080
+#define LOCAL_GL_PIXEL_BUFFER_BARRIER_BIT_EXT                0x00000080
+#define LOCAL_GL_PIXEL_COUNTER_BITS_NV                       0x8864
+#define LOCAL_GL_PIXEL_COUNT_AVAILABLE_NV                    0x8867
+#define LOCAL_GL_PIXEL_COUNT_NV                              0x8866
+#define LOCAL_GL_PIXEL_CUBIC_WEIGHT_EXT                      0x8333
+#define LOCAL_GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS            0x8355
+#define LOCAL_GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS              0x8354
+#define LOCAL_GL_PIXEL_GROUP_COLOR_SGIS                      0x8356
+#define LOCAL_GL_PIXEL_MAG_FILTER_EXT                        0x8331
+#define LOCAL_GL_PIXEL_MAP_A_TO_A                            0x0C79
+#define LOCAL_GL_PIXEL_MAP_A_TO_A_SIZE                       0x0CB9
+#define LOCAL_GL_PIXEL_MAP_B_TO_B                            0x0C78
+#define LOCAL_GL_PIXEL_MAP_B_TO_B_SIZE                       0x0CB8
+#define LOCAL_GL_PIXEL_MAP_G_TO_G                            0x0C77
+#define LOCAL_GL_PIXEL_MAP_G_TO_G_SIZE                       0x0CB7
+#define LOCAL_GL_PIXEL_MAP_I_TO_A                            0x0C75
+#define LOCAL_GL_PIXEL_MAP_I_TO_A_SIZE                       0x0CB5
+#define LOCAL_GL_PIXEL_MAP_I_TO_B                            0x0C74
+#define LOCAL_GL_PIXEL_MAP_I_TO_B_SIZE                       0x0CB4
+#define LOCAL_GL_PIXEL_MAP_I_TO_G                            0x0C73
+#define LOCAL_GL_PIXEL_MAP_I_TO_G_SIZE                       0x0CB3
+#define LOCAL_GL_PIXEL_MAP_I_TO_I                            0x0C70
+#define LOCAL_GL_PIXEL_MAP_I_TO_I_SIZE                       0x0CB0
+#define LOCAL_GL_PIXEL_MAP_I_TO_R                            0x0C72
+#define LOCAL_GL_PIXEL_MAP_I_TO_R_SIZE                       0x0CB2
+#define LOCAL_GL_PIXEL_MAP_R_TO_R                            0x0C76
+#define LOCAL_GL_PIXEL_MAP_R_TO_R_SIZE                       0x0CB6
+#define LOCAL_GL_PIXEL_MAP_S_TO_S                            0x0C71
+#define LOCAL_GL_PIXEL_MAP_S_TO_S_SIZE                       0x0CB1
+#define LOCAL_GL_PIXEL_MIN_FILTER_EXT                        0x8332
+#define LOCAL_GL_PIXEL_MODE_BIT                              0x00000020
+#define LOCAL_GL_PIXEL_PACK_BUFFER                           0x88EB
+#define LOCAL_GL_PIXEL_PACK_BUFFER_ARB                       0x88EB
+#define LOCAL_GL_PIXEL_PACK_BUFFER_BINDING                   0x88ED
+#define LOCAL_GL_PIXEL_PACK_BUFFER_BINDING_ARB               0x88ED
+#define LOCAL_GL_PIXEL_PACK_BUFFER_BINDING_EXT               0x88ED
+#define LOCAL_GL_PIXEL_PACK_BUFFER_BINDING_NV                0x88ED
+#define LOCAL_GL_PIXEL_PACK_BUFFER_EXT                       0x88EB
+#define LOCAL_GL_PIXEL_PACK_BUFFER_NV                        0x88EB
+#define LOCAL_GL_PIXEL_SUBSAMPLE_2424_SGIX                   0x85A3
+#define LOCAL_GL_PIXEL_SUBSAMPLE_4242_SGIX                   0x85A4
+#define LOCAL_GL_PIXEL_SUBSAMPLE_4444_SGIX                   0x85A2
+#define LOCAL_GL_PIXEL_TEXTURE_SGIS                          0x8353
+#define LOCAL_GL_PIXEL_TEX_GEN_ALPHA_LS_SGIX                 0x8189
+#define LOCAL_GL_PIXEL_TEX_GEN_ALPHA_MS_SGIX                 0x818A
+#define LOCAL_GL_PIXEL_TEX_GEN_ALPHA_NO_REPLACE_SGIX         0x8188
+#define LOCAL_GL_PIXEL_TEX_GEN_ALPHA_REPLACE_SGIX            0x8187
+#define LOCAL_GL_PIXEL_TEX_GEN_MODE_SGIX                     0x832B
+#define LOCAL_GL_PIXEL_TEX_GEN_Q_CEILING_SGIX                0x8184
+#define LOCAL_GL_PIXEL_TEX_GEN_Q_FLOOR_SGIX                  0x8186
+#define LOCAL_GL_PIXEL_TEX_GEN_Q_ROUND_SGIX                  0x8185
+#define LOCAL_GL_PIXEL_TEX_GEN_SGIX                          0x8139
+#define LOCAL_GL_PIXEL_TILE_BEST_ALIGNMENT_SGIX              0x813E
+#define LOCAL_GL_PIXEL_TILE_CACHE_INCREMENT_SGIX             0x813F
+#define LOCAL_GL_PIXEL_TILE_CACHE_SIZE_SGIX                  0x8145
+#define LOCAL_GL_PIXEL_TILE_GRID_DEPTH_SGIX                  0x8144
+#define LOCAL_GL_PIXEL_TILE_GRID_HEIGHT_SGIX                 0x8143
+#define LOCAL_GL_PIXEL_TILE_GRID_WIDTH_SGIX                  0x8142
+#define LOCAL_GL_PIXEL_TILE_HEIGHT_SGIX                      0x8141
+#define LOCAL_GL_PIXEL_TILE_WIDTH_SGIX                       0x8140
+#define LOCAL_GL_PIXEL_TRANSFORM_2D_EXT                      0x8330
+#define LOCAL_GL_PIXEL_TRANSFORM_2D_MATRIX_EXT               0x8338
+#define LOCAL_GL_PIXEL_TRANSFORM_2D_STACK_DEPTH_EXT          0x8336
+#define LOCAL_GL_PIXEL_UNPACK_BUFFER                         0x88EC
+#define LOCAL_GL_PIXEL_UNPACK_BUFFER_ARB                     0x88EC
+#define LOCAL_GL_PIXEL_UNPACK_BUFFER_BINDING                 0x88EF
+#define LOCAL_GL_PIXEL_UNPACK_BUFFER_BINDING_ARB             0x88EF
+#define LOCAL_GL_PIXEL_UNPACK_BUFFER_BINDING_EXT             0x88EF
+#define LOCAL_GL_PIXEL_UNPACK_BUFFER_BINDING_NV              0x88EF
+#define LOCAL_GL_PIXEL_UNPACK_BUFFER_EXT                     0x88EC
+#define LOCAL_GL_PIXEL_UNPACK_BUFFER_NV                      0x88EC
+#define LOCAL_GL_PLUS_CLAMPED_ALPHA_NV                       0x92B2
+#define LOCAL_GL_PLUS_CLAMPED_NV                             0x92B1
+#define LOCAL_GL_PLUS_DARKER_NV                              0x9292
+#define LOCAL_GL_PLUS_NV                                     0x9291
+#define LOCAL_GL_PN_TRIANGLES_ATI                            0x87F0
+#define LOCAL_GL_PN_TRIANGLES_NORMAL_MODE_ATI                0x87F3
+#define LOCAL_GL_PN_TRIANGLES_NORMAL_MODE_LINEAR_ATI         0x87F7
+#define LOCAL_GL_PN_TRIANGLES_NORMAL_MODE_QUADRATIC_ATI      0x87F8
+#define LOCAL_GL_PN_TRIANGLES_POINT_MODE_ATI                 0x87F2
+#define LOCAL_GL_PN_TRIANGLES_POINT_MODE_CUBIC_ATI           0x87F6
+#define LOCAL_GL_PN_TRIANGLES_POINT_MODE_LINEAR_ATI          0x87F5
+#define LOCAL_GL_PN_TRIANGLES_TESSELATION_LEVEL_ATI          0x87F4
+#define LOCAL_GL_POINT                                       0x1B00
+#define LOCAL_GL_POINTS                                      0x0000
+#define LOCAL_GL_POINT_BIT                                   0x00000002
+#define LOCAL_GL_POINT_DISTANCE_ATTENUATION                  0x8129
+#define LOCAL_GL_POINT_DISTANCE_ATTENUATION_ARB              0x8129
+#define LOCAL_GL_POINT_FADE_THRESHOLD_SIZE                   0x8128
+#define LOCAL_GL_POINT_FADE_THRESHOLD_SIZE_ARB               0x8128
+#define LOCAL_GL_POINT_FADE_THRESHOLD_SIZE_EXT               0x8128
+#define LOCAL_GL_POINT_FADE_THRESHOLD_SIZE_SGIS              0x8128
+#define LOCAL_GL_POINT_NV                                    0x1B00
+#define LOCAL_GL_POINT_SIZE                                  0x0B11
+#define LOCAL_GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES         0x8B9F
+#define LOCAL_GL_POINT_SIZE_ARRAY_OES                        0x8B9C
+#define LOCAL_GL_POINT_SIZE_ARRAY_POINTER_OES                0x898C
+#define LOCAL_GL_POINT_SIZE_ARRAY_STRIDE_OES                 0x898B
+#define LOCAL_GL_POINT_SIZE_ARRAY_TYPE_OES                   0x898A
+#define LOCAL_GL_POINT_SIZE_GRANULARITY                      0x0B13
+#define LOCAL_GL_POINT_SIZE_MAX                              0x8127
+#define LOCAL_GL_POINT_SIZE_MAX_ARB                          0x8127
+#define LOCAL_GL_POINT_SIZE_MAX_EXT                          0x8127
+#define LOCAL_GL_POINT_SIZE_MAX_SGIS                         0x8127
+#define LOCAL_GL_POINT_SIZE_MIN                              0x8126
+#define LOCAL_GL_POINT_SIZE_MIN_ARB                          0x8126
+#define LOCAL_GL_POINT_SIZE_MIN_EXT                          0x8126
+#define LOCAL_GL_POINT_SIZE_MIN_SGIS                         0x8126
+#define LOCAL_GL_POINT_SIZE_RANGE                            0x0B12
+#define LOCAL_GL_POINT_SMOOTH                                0x0B10
+#define LOCAL_GL_POINT_SMOOTH_HINT                           0x0C51
+#define LOCAL_GL_POINT_SPRITE                                0x8861
+#define LOCAL_GL_POINT_SPRITE_ARB                            0x8861
+#define LOCAL_GL_POINT_SPRITE_COORD_ORIGIN                   0x8CA0
+#define LOCAL_GL_POINT_SPRITE_NV                             0x8861
+#define LOCAL_GL_POINT_SPRITE_OES                            0x8861
+#define LOCAL_GL_POINT_SPRITE_R_MODE_NV                      0x8863
+#define LOCAL_GL_POINT_TOKEN                                 0x0701
+#define LOCAL_GL_POLYGON                                     0x0009
+#define LOCAL_GL_POLYGON_BIT                                 0x00000008
+#define LOCAL_GL_POLYGON_MODE                                0x0B40
+#define LOCAL_GL_POLYGON_MODE_NV                             0x0B40
+#define LOCAL_GL_POLYGON_OFFSET_BIAS_EXT                     0x8039
+#define LOCAL_GL_POLYGON_OFFSET_CLAMP                        0x8E1B
+#define LOCAL_GL_POLYGON_OFFSET_CLAMP_EXT                    0x8E1B
+#define LOCAL_GL_POLYGON_OFFSET_COMMAND_NV                   0x000E
+#define LOCAL_GL_POLYGON_OFFSET_EXT                          0x8037
+#define LOCAL_GL_POLYGON_OFFSET_FACTOR                       0x8038
+#define LOCAL_GL_POLYGON_OFFSET_FACTOR_EXT                   0x8038
+#define LOCAL_GL_POLYGON_OFFSET_FILL                         0x8037
+#define LOCAL_GL_POLYGON_OFFSET_LINE                         0x2A02
+#define LOCAL_GL_POLYGON_OFFSET_LINE_NV                      0x2A02
+#define LOCAL_GL_POLYGON_OFFSET_POINT                        0x2A01
+#define LOCAL_GL_POLYGON_OFFSET_POINT_NV                     0x2A01
+#define LOCAL_GL_POLYGON_OFFSET_UNITS                        0x2A00
+#define LOCAL_GL_POLYGON_SMOOTH                              0x0B41
+#define LOCAL_GL_POLYGON_SMOOTH_HINT                         0x0C53
+#define LOCAL_GL_POLYGON_STIPPLE                             0x0B42
+#define LOCAL_GL_POLYGON_STIPPLE_BIT                         0x00000010
+#define LOCAL_GL_POLYGON_TOKEN                               0x0703
+#define LOCAL_GL_POSITION                                    0x1203
+#define LOCAL_GL_POST_COLOR_MATRIX_ALPHA_BIAS                0x80BB
+#define LOCAL_GL_POST_COLOR_MATRIX_ALPHA_BIAS_SGI            0x80BB
+#define LOCAL_GL_POST_COLOR_MATRIX_ALPHA_SCALE               0x80B7
+#define LOCAL_GL_POST_COLOR_MATRIX_ALPHA_SCALE_SGI           0x80B7
+#define LOCAL_GL_POST_COLOR_MATRIX_BLUE_BIAS                 0x80BA
+#define LOCAL_GL_POST_COLOR_MATRIX_BLUE_BIAS_SGI             0x80BA
+#define LOCAL_GL_POST_COLOR_MATRIX_BLUE_SCALE                0x80B6
+#define LOCAL_GL_POST_COLOR_MATRIX_BLUE_SCALE_SGI            0x80B6
+#define LOCAL_GL_POST_COLOR_MATRIX_COLOR_TABLE               0x80D2
+#define LOCAL_GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI           0x80D2
+#define LOCAL_GL_POST_COLOR_MATRIX_GREEN_BIAS                0x80B9
+#define LOCAL_GL_POST_COLOR_MATRIX_GREEN_BIAS_SGI            0x80B9
+#define LOCAL_GL_POST_COLOR_MATRIX_GREEN_SCALE               0x80B5
+#define LOCAL_GL_POST_COLOR_MATRIX_GREEN_SCALE_SGI           0x80B5
+#define LOCAL_GL_POST_COLOR_MATRIX_RED_BIAS                  0x80B8
+#define LOCAL_GL_POST_COLOR_MATRIX_RED_BIAS_SGI              0x80B8
+#define LOCAL_GL_POST_COLOR_MATRIX_RED_SCALE                 0x80B4
+#define LOCAL_GL_POST_COLOR_MATRIX_RED_SCALE_SGI             0x80B4
+#define LOCAL_GL_POST_CONVOLUTION_ALPHA_BIAS                 0x8023
+#define LOCAL_GL_POST_CONVOLUTION_ALPHA_BIAS_EXT             0x8023
+#define LOCAL_GL_POST_CONVOLUTION_ALPHA_SCALE                0x801F
+#define LOCAL_GL_POST_CONVOLUTION_ALPHA_SCALE_EXT            0x801F
+#define LOCAL_GL_POST_CONVOLUTION_BLUE_BIAS                  0x8022
+#define LOCAL_GL_POST_CONVOLUTION_BLUE_BIAS_EXT              0x8022
+#define LOCAL_GL_POST_CONVOLUTION_BLUE_SCALE                 0x801E
+#define LOCAL_GL_POST_CONVOLUTION_BLUE_SCALE_EXT             0x801E
+#define LOCAL_GL_POST_CONVOLUTION_COLOR_TABLE                0x80D1
+#define LOCAL_GL_POST_CONVOLUTION_COLOR_TABLE_SGI            0x80D1
+#define LOCAL_GL_POST_CONVOLUTION_GREEN_BIAS                 0x8021
+#define LOCAL_GL_POST_CONVOLUTION_GREEN_BIAS_EXT             0x8021
+#define LOCAL_GL_POST_CONVOLUTION_GREEN_SCALE                0x801D
+#define LOCAL_GL_POST_CONVOLUTION_GREEN_SCALE_EXT            0x801D
+#define LOCAL_GL_POST_CONVOLUTION_RED_BIAS                   0x8020
+#define LOCAL_GL_POST_CONVOLUTION_RED_BIAS_EXT               0x8020
+#define LOCAL_GL_POST_CONVOLUTION_RED_SCALE                  0x801C
+#define LOCAL_GL_POST_CONVOLUTION_RED_SCALE_EXT              0x801C
+#define LOCAL_GL_POST_IMAGE_TRANSFORM_COLOR_TABLE_HP         0x8162
+#define LOCAL_GL_POST_TEXTURE_FILTER_BIAS_RANGE_SGIX         0x817B
+#define LOCAL_GL_POST_TEXTURE_FILTER_BIAS_SGIX               0x8179
+#define LOCAL_GL_POST_TEXTURE_FILTER_SCALE_RANGE_SGIX        0x817C
+#define LOCAL_GL_POST_TEXTURE_FILTER_SCALE_SGIX              0x817A
+#define LOCAL_GL_PREFER_DOUBLEBUFFER_HINT_PGI                0x1A1F8
+#define LOCAL_GL_PRESENT_DURATION_NV                         0x8E2B
+#define LOCAL_GL_PRESENT_TIME_NV                             0x8E2A
+#define LOCAL_GL_PRESERVE_ATI                                0x8762
+#define LOCAL_GL_PREVIOUS                                    0x8578
+#define LOCAL_GL_PREVIOUS_ARB                                0x8578
+#define LOCAL_GL_PREVIOUS_EXT                                0x8578
+#define LOCAL_GL_PREVIOUS_TEXTURE_INPUT_NV                   0x86E4
+#define LOCAL_GL_PRIMARY_COLOR                               0x8577
+#define LOCAL_GL_PRIMARY_COLOR_ARB                           0x8577
+#define LOCAL_GL_PRIMARY_COLOR_EXT                           0x8577
+#define LOCAL_GL_PRIMARY_COLOR_NV                            0x852C
+#define LOCAL_GL_PRIMITIVES_GENERATED                        0x8C87
+#define LOCAL_GL_PRIMITIVES_GENERATED_EXT                    0x8C87
+#define LOCAL_GL_PRIMITIVES_GENERATED_NV                     0x8C87
+#define LOCAL_GL_PRIMITIVES_GENERATED_OES                    0x8C87
+#define LOCAL_GL_PRIMITIVES_SUBMITTED                        0x82EF
+#define LOCAL_GL_PRIMITIVES_SUBMITTED_ARB                    0x82EF
+#define LOCAL_GL_PRIMITIVE_BOUNDING_BOX                      0x92BE
+#define LOCAL_GL_PRIMITIVE_BOUNDING_BOX_ARB                  0x92BE
+#define LOCAL_GL_PRIMITIVE_BOUNDING_BOX_EXT                  0x92BE
+#define LOCAL_GL_PRIMITIVE_BOUNDING_BOX_OES                  0x92BE
+#define LOCAL_GL_PRIMITIVE_ID_NV                             0x8C7C
+#define LOCAL_GL_PRIMITIVE_RESTART                           0x8F9D
+#define LOCAL_GL_PRIMITIVE_RESTART_FIXED_INDEX               0x8D69
+#define LOCAL_GL_PRIMITIVE_RESTART_FOR_PATCHES_SUPPORTED     0x8221
+#define LOCAL_GL_PRIMITIVE_RESTART_FOR_PATCHES_SUPPORTED_OES 0x8221
+#define LOCAL_GL_PRIMITIVE_RESTART_INDEX                     0x8F9E
+#define LOCAL_GL_PRIMITIVE_RESTART_INDEX_NV                  0x8559
+#define LOCAL_GL_PRIMITIVE_RESTART_NV                        0x8558
+#define LOCAL_GL_PROGRAM                                     0x82E2
+#define LOCAL_GL_PROGRAMMABLE_SAMPLE_LOCATION_ARB            0x9341
+#define LOCAL_GL_PROGRAMMABLE_SAMPLE_LOCATION_NV             0x9341
+#define LOCAL_GL_PROGRAMMABLE_SAMPLE_LOCATION_TABLE_SIZE_ARB 0x9340
+#define LOCAL_GL_PROGRAMMABLE_SAMPLE_LOCATION_TABLE_SIZE_NV  0x9340
+#define LOCAL_GL_PROGRAM_ADDRESS_REGISTERS_ARB               0x88B0
+#define LOCAL_GL_PROGRAM_ALU_INSTRUCTIONS_ARB                0x8805
+#define LOCAL_GL_PROGRAM_ATTRIBS_ARB                         0x88AC
+#define LOCAL_GL_PROGRAM_ATTRIB_COMPONENTS_NV                0x8906
+#define LOCAL_GL_PROGRAM_BINARY_ANGLE                        0x93A6
+#define LOCAL_GL_PROGRAM_BINARY_FORMATS                      0x87FF
+#define LOCAL_GL_PROGRAM_BINARY_FORMATS_OES                  0x87FF
+#define LOCAL_GL_PROGRAM_BINARY_FORMAT_MESA                  0x875F
+#define LOCAL_GL_PROGRAM_BINARY_LENGTH                       0x8741
+#define LOCAL_GL_PROGRAM_BINARY_LENGTH_OES                   0x8741
+#define LOCAL_GL_PROGRAM_BINARY_RETRIEVABLE_HINT             0x8257
+#define LOCAL_GL_PROGRAM_BINDING_ARB                         0x8677
+#define LOCAL_GL_PROGRAM_ERROR_POSITION_ARB                  0x864B
+#define LOCAL_GL_PROGRAM_ERROR_POSITION_NV                   0x864B
+#define LOCAL_GL_PROGRAM_ERROR_STRING_ARB                    0x8874
+#define LOCAL_GL_PROGRAM_ERROR_STRING_NV                     0x8874
+#define LOCAL_GL_PROGRAM_FORMAT_ARB                          0x8876
+#define LOCAL_GL_PROGRAM_FORMAT_ASCII_ARB                    0x8875
+#define LOCAL_GL_PROGRAM_INPUT                               0x92E3
+#define LOCAL_GL_PROGRAM_INSTRUCTIONS_ARB                    0x88A0
+#define LOCAL_GL_PROGRAM_KHR                                 0x82E2
+#define LOCAL_GL_PROGRAM_LENGTH_ARB                          0x8627
+#define LOCAL_GL_PROGRAM_LENGTH_NV                           0x8627
+#define LOCAL_GL_PROGRAM_MATRIX_EXT                          0x8E2D
+#define LOCAL_GL_PROGRAM_MATRIX_STACK_DEPTH_EXT              0x8E2F
+#define LOCAL_GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB        0x88B2
+#define LOCAL_GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB         0x8808
+#define LOCAL_GL_PROGRAM_NATIVE_ATTRIBS_ARB                  0x88AE
+#define LOCAL_GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB             0x88A2
+#define LOCAL_GL_PROGRAM_NATIVE_PARAMETERS_ARB               0x88AA
+#define LOCAL_GL_PROGRAM_NATIVE_TEMPORARIES_ARB              0x88A6
+#define LOCAL_GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB         0x880A
+#define LOCAL_GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB         0x8809
+#define LOCAL_GL_PROGRAM_OBJECT_ARB                          0x8B40
+#define LOCAL_GL_PROGRAM_OBJECT_EXT                          0x8B40
+#define LOCAL_GL_PROGRAM_OUTPUT                              0x92E4
+#define LOCAL_GL_PROGRAM_PARAMETERS_ARB                      0x88A8
+#define LOCAL_GL_PROGRAM_PARAMETER_NV                        0x8644
+#define LOCAL_GL_PROGRAM_PIPELINE                            0x82E4
+#define LOCAL_GL_PROGRAM_PIPELINE_BINDING                    0x825A
+#define LOCAL_GL_PROGRAM_PIPELINE_BINDING_EXT                0x825A
+#define LOCAL_GL_PROGRAM_PIPELINE_KHR                        0x82E4
+#define LOCAL_GL_PROGRAM_PIPELINE_OBJECT_EXT                 0x8A4F
+#define LOCAL_GL_PROGRAM_POINT_SIZE                          0x8642
+#define LOCAL_GL_PROGRAM_POINT_SIZE_ARB                      0x8642
+#define LOCAL_GL_PROGRAM_POINT_SIZE_EXT                      0x8642
+#define LOCAL_GL_PROGRAM_RESIDENT_NV                         0x8647
+#define LOCAL_GL_PROGRAM_RESULT_COMPONENTS_NV                0x8907
+#define LOCAL_GL_PROGRAM_SEPARABLE                           0x8258
+#define LOCAL_GL_PROGRAM_SEPARABLE_EXT                       0x8258
+#define LOCAL_GL_PROGRAM_STRING_ARB                          0x8628
+#define LOCAL_GL_PROGRAM_STRING_NV                           0x8628
+#define LOCAL_GL_PROGRAM_TARGET_NV                           0x8646
+#define LOCAL_GL_PROGRAM_TEMPORARIES_ARB                     0x88A4
+#define LOCAL_GL_PROGRAM_TEX_INDIRECTIONS_ARB                0x8807
+#define LOCAL_GL_PROGRAM_TEX_INSTRUCTIONS_ARB                0x8806
+#define LOCAL_GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB             0x88B6
+#define LOCAL_GL_PROJECTION                                  0x1701
+#define LOCAL_GL_PROJECTION_MATRIX                           0x0BA7
+#define LOCAL_GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES     0x898E
+#define LOCAL_GL_PROJECTION_STACK_DEPTH                      0x0BA4
+#define LOCAL_GL_PROTECTED_MEMORY_OBJECT_EXT                 0x959B
+#define LOCAL_GL_PROVOKING_VERTEX                            0x8E4F
+#define LOCAL_GL_PROVOKING_VERTEX_EXT                        0x8E4F
+#define LOCAL_GL_PROXY_COLOR_TABLE                           0x80D3
+#define LOCAL_GL_PROXY_COLOR_TABLE_SGI                       0x80D3
+#define LOCAL_GL_PROXY_HISTOGRAM                             0x8025
+#define LOCAL_GL_PROXY_HISTOGRAM_EXT                         0x8025
+#define LOCAL_GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE         0x80D5
+#define LOCAL_GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE_SGI     0x80D5
+#define LOCAL_GL_PROXY_POST_CONVOLUTION_COLOR_TABLE          0x80D4
+#define LOCAL_GL_PROXY_POST_CONVOLUTION_COLOR_TABLE_SGI      0x80D4
+#define LOCAL_GL_PROXY_POST_IMAGE_TRANSFORM_COLOR_TABLE_HP   0x8163
+#define LOCAL_GL_PROXY_TEXTURE_1D                            0x8063
+#define LOCAL_GL_PROXY_TEXTURE_1D_ARRAY                      0x8C19
+#define LOCAL_GL_PROXY_TEXTURE_1D_ARRAY_EXT                  0x8C19
+#define LOCAL_GL_PROXY_TEXTURE_1D_EXT                        0x8063
+#define LOCAL_GL_PROXY_TEXTURE_1D_STACK_MESAX                0x875B
+#define LOCAL_GL_PROXY_TEXTURE_2D                            0x8064
+#define LOCAL_GL_PROXY_TEXTURE_2D_ARRAY                      0x8C1B
+#define LOCAL_GL_PROXY_TEXTURE_2D_ARRAY_EXT                  0x8C1B
+#define LOCAL_GL_PROXY_TEXTURE_2D_EXT                        0x8064
+#define LOCAL_GL_PROXY_TEXTURE_2D_MULTISAMPLE                0x9101
+#define LOCAL_GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY          0x9103
+#define LOCAL_GL_PROXY_TEXTURE_2D_STACK_MESAX                0x875C
+#define LOCAL_GL_PROXY_TEXTURE_3D                            0x8070
+#define LOCAL_GL_PROXY_TEXTURE_3D_EXT                        0x8070
+#define LOCAL_GL_PROXY_TEXTURE_4D_SGIS                       0x8135
+#define LOCAL_GL_PROXY_TEXTURE_COLOR_TABLE_SGI               0x80BD
+#define LOCAL_GL_PROXY_TEXTURE_CUBE_MAP                      0x851B
+#define LOCAL_GL_PROXY_TEXTURE_CUBE_MAP_ARB                  0x851B
+#define LOCAL_GL_PROXY_TEXTURE_CUBE_MAP_ARRAY                0x900B
+#define LOCAL_GL_PROXY_TEXTURE_CUBE_MAP_ARRAY_ARB            0x900B
+#define LOCAL_GL_PROXY_TEXTURE_CUBE_MAP_EXT                  0x851B
+#define LOCAL_GL_PROXY_TEXTURE_RECTANGLE                     0x84F7
+#define LOCAL_GL_PROXY_TEXTURE_RECTANGLE_ARB                 0x84F7
+#define LOCAL_GL_PROXY_TEXTURE_RECTANGLE_NV                  0x84F7
+#define LOCAL_GL_PURGEABLE_APPLE                             0x8A1D
+#define LOCAL_GL_PURGED_CONTEXT_RESET_NV                     0x92BB
+#define LOCAL_GL_Q                                           0x2003
+#define LOCAL_GL_QUADRATIC_ATTENUATION                       0x1209
+#define LOCAL_GL_QUADRATIC_CURVE_TO_NV                       0x0A
+#define LOCAL_GL_QUADS                                       0x0007
+#define LOCAL_GL_QUADS_EXT                                   0x0007
+#define LOCAL_GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION    0x8E4C
+#define LOCAL_GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION_EXT        0x8E4C
+#define LOCAL_GL_QUADS_OES                                   0x0007
+#define LOCAL_GL_QUAD_ALPHA4_SGIS                            0x811E
+#define LOCAL_GL_QUAD_ALPHA8_SGIS                            0x811F
+#define LOCAL_GL_QUAD_INTENSITY4_SGIS                        0x8122
+#define LOCAL_GL_QUAD_INTENSITY8_SGIS                        0x8123
+#define LOCAL_GL_QUAD_LUMINANCE4_SGIS                        0x8120
+#define LOCAL_GL_QUAD_LUMINANCE8_SGIS                        0x8121
+#define LOCAL_GL_QUAD_MESH_SUN                               0x8614
+#define LOCAL_GL_QUAD_STRIP                                  0x0008
+#define LOCAL_GL_QUAD_TEXTURE_SELECT_SGIS                    0x8125
+#define LOCAL_GL_QUARTER_BIT_ATI                             0x00000010
+#define LOCAL_GL_QUERY                                       0x82E3
+#define LOCAL_GL_QUERY_ALL_EVENT_BITS_AMD                    0xFFFFFFFF
+#define LOCAL_GL_QUERY_BUFFER                                0x9192
+#define LOCAL_GL_QUERY_BUFFER_AMD                            0x9192
+#define LOCAL_GL_QUERY_BUFFER_BARRIER_BIT                    0x00008000
+#define LOCAL_GL_QUERY_BUFFER_BINDING                        0x9193
+#define LOCAL_GL_QUERY_BUFFER_BINDING_AMD                    0x9193
+#define LOCAL_GL_QUERY_BY_REGION_NO_WAIT                     0x8E16
+#define LOCAL_GL_QUERY_BY_REGION_NO_WAIT_INVERTED            0x8E1A
+#define LOCAL_GL_QUERY_BY_REGION_NO_WAIT_NV                  0x8E16
+#define LOCAL_GL_QUERY_BY_REGION_WAIT                        0x8E15
+#define LOCAL_GL_QUERY_BY_REGION_WAIT_INVERTED               0x8E19
+#define LOCAL_GL_QUERY_BY_REGION_WAIT_NV                     0x8E15
+#define LOCAL_GL_QUERY_COUNTER_BITS                          0x8864
+#define LOCAL_GL_QUERY_COUNTER_BITS_ARB                      0x8864
+#define LOCAL_GL_QUERY_COUNTER_BITS_EXT                      0x8864
+#define LOCAL_GL_QUERY_DEPTH_BOUNDS_FAIL_EVENT_BIT_AMD       0x00000008
+#define LOCAL_GL_QUERY_DEPTH_FAIL_EVENT_BIT_AMD              0x00000002
+#define LOCAL_GL_QUERY_DEPTH_PASS_EVENT_BIT_AMD              0x00000001
+#define LOCAL_GL_QUERY_KHR                                   0x82E3
+#define LOCAL_GL_QUERY_NO_WAIT                               0x8E14
+#define LOCAL_GL_QUERY_NO_WAIT_INVERTED                      0x8E18
+#define LOCAL_GL_QUERY_NO_WAIT_NV                            0x8E14
+#define LOCAL_GL_QUERY_OBJECT_AMD                            0x9153
+#define LOCAL_GL_QUERY_OBJECT_EXT                            0x9153
+#define LOCAL_GL_QUERY_RESOURCE_BUFFEROBJECT_NV              0x9547
+#define LOCAL_GL_QUERY_RESOURCE_MEMTYPE_VIDMEM_NV            0x9542
+#define LOCAL_GL_QUERY_RESOURCE_RENDERBUFFER_NV              0x9546
+#define LOCAL_GL_QUERY_RESOURCE_SYS_RESERVED_NV              0x9544
+#define LOCAL_GL_QUERY_RESOURCE_TEXTURE_NV                   0x9545
+#define LOCAL_GL_QUERY_RESOURCE_TYPE_VIDMEM_ALLOC_NV         0x9540
+#define LOCAL_GL_QUERY_RESULT                                0x8866
+#define LOCAL_GL_QUERY_RESULT_ARB                            0x8866
+#define LOCAL_GL_QUERY_RESULT_AVAILABLE                      0x8867
+#define LOCAL_GL_QUERY_RESULT_AVAILABLE_ARB                  0x8867
+#define LOCAL_GL_QUERY_RESULT_AVAILABLE_EXT                  0x8867
+#define LOCAL_GL_QUERY_RESULT_EXT                            0x8866
+#define LOCAL_GL_QUERY_RESULT_NO_WAIT                        0x9194
+#define LOCAL_GL_QUERY_RESULT_NO_WAIT_AMD                    0x9194
+#define LOCAL_GL_QUERY_STENCIL_FAIL_EVENT_BIT_AMD            0x00000004
+#define LOCAL_GL_QUERY_TARGET                                0x82EA
+#define LOCAL_GL_QUERY_WAIT                                  0x8E13
+#define LOCAL_GL_QUERY_WAIT_INVERTED                         0x8E17
+#define LOCAL_GL_QUERY_WAIT_NV                               0x8E13
+#define LOCAL_GL_R                                           0x2002
+#define LOCAL_GL_R11F_G11F_B10F                              0x8C3A
+#define LOCAL_GL_R11F_G11F_B10F_APPLE                        0x8C3A
+#define LOCAL_GL_R11F_G11F_B10F_EXT                          0x8C3A
+#define LOCAL_GL_R16                                         0x822A
+#define LOCAL_GL_R16F                                        0x822D
+#define LOCAL_GL_R16F_EXT                                    0x822D
+#define LOCAL_GL_R16I                                        0x8233
+#define LOCAL_GL_R16UI                                       0x8234
+#define LOCAL_GL_R16_EXT                                     0x822A
+#define LOCAL_GL_R16_SNORM                                   0x8F98
+#define LOCAL_GL_R16_SNORM_EXT                               0x8F98
+#define LOCAL_GL_R1UI_C3F_V3F_SUN                            0x85C6
+#define LOCAL_GL_R1UI_C4F_N3F_V3F_SUN                        0x85C8
+#define LOCAL_GL_R1UI_C4UB_V3F_SUN                           0x85C5
+#define LOCAL_GL_R1UI_N3F_V3F_SUN                            0x85C7
+#define LOCAL_GL_R1UI_T2F_C4F_N3F_V3F_SUN                    0x85CB
+#define LOCAL_GL_R1UI_T2F_N3F_V3F_SUN                        0x85CA
+#define LOCAL_GL_R1UI_T2F_V3F_SUN                            0x85C9
+#define LOCAL_GL_R1UI_V3F_SUN                                0x85C4
+#define LOCAL_GL_R32F                                        0x822E
+#define LOCAL_GL_R32F_EXT                                    0x822E
+#define LOCAL_GL_R32I                                        0x8235
+#define LOCAL_GL_R32UI                                       0x8236
+#define LOCAL_GL_R3_G3_B2                                    0x2A10
+#define LOCAL_GL_R8                                          0x8229
+#define LOCAL_GL_R8I                                         0x8231
+#define LOCAL_GL_R8UI                                        0x8232
+#define LOCAL_GL_R8_EXT                                      0x8229
+#define LOCAL_GL_R8_SNORM                                    0x8F94
+#define LOCAL_GL_RASTERIZER_DISCARD                          0x8C89
+#define LOCAL_GL_RASTERIZER_DISCARD_EXT                      0x8C89
+#define LOCAL_GL_RASTERIZER_DISCARD_NV                       0x8C89
+#define LOCAL_GL_RASTER_FIXED_SAMPLE_LOCATIONS_EXT           0x932A
+#define LOCAL_GL_RASTER_MULTISAMPLE_EXT                      0x9327
+#define LOCAL_GL_RASTER_POSITION_UNCLIPPED_IBM               0x19262
+#define LOCAL_GL_RASTER_SAMPLES_EXT                          0x9328
+#define LOCAL_GL_READ_BUFFER                                 0x0C02
+#define LOCAL_GL_READ_BUFFER_EXT                             0x0C02
+#define LOCAL_GL_READ_BUFFER_NV                              0x0C02
+#define LOCAL_GL_READ_FRAMEBUFFER                            0x8CA8
+#define LOCAL_GL_READ_FRAMEBUFFER_ANGLE                      0x8CA8
+#define LOCAL_GL_READ_FRAMEBUFFER_APPLE                      0x8CA8
+#define LOCAL_GL_READ_FRAMEBUFFER_BINDING                    0x8CAA
+#define LOCAL_GL_READ_FRAMEBUFFER_BINDING_ANGLE              0x8CAA
+#define LOCAL_GL_READ_FRAMEBUFFER_BINDING_APPLE              0x8CAA
+#define LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT                0x8CAA
+#define LOCAL_GL_READ_FRAMEBUFFER_BINDING_NV                 0x8CAA
+#define LOCAL_GL_READ_FRAMEBUFFER_EXT                        0x8CA8
+#define LOCAL_GL_READ_FRAMEBUFFER_NV                         0x8CA8
+#define LOCAL_GL_READ_ONLY                                   0x88B8
+#define LOCAL_GL_READ_ONLY_ARB                               0x88B8
+#define LOCAL_GL_READ_PIXELS                                 0x828C
+#define LOCAL_GL_READ_PIXELS_FORMAT                          0x828D
+#define LOCAL_GL_READ_PIXELS_TYPE                            0x828E
+#define LOCAL_GL_READ_PIXEL_DATA_RANGE_LENGTH_NV             0x887B
+#define LOCAL_GL_READ_PIXEL_DATA_RANGE_NV                    0x8879
+#define LOCAL_GL_READ_PIXEL_DATA_RANGE_POINTER_NV            0x887D
+#define LOCAL_GL_READ_WRITE                                  0x88BA
+#define LOCAL_GL_READ_WRITE_ARB                              0x88BA
+#define LOCAL_GL_RECIP_ADD_SIGNED_ALPHA_IMG                  0x8C05
+#define LOCAL_GL_RECLAIM_MEMORY_HINT_PGI                     0x1A1FE
+#define LOCAL_GL_RECT_NV                                     0xF6
+#define LOCAL_GL_RED                                         0x1903
+#define LOCAL_GL_REDUCE                                      0x8016
+#define LOCAL_GL_REDUCE_EXT                                  0x8016
+#define LOCAL_GL_RED_BIAS                                    0x0D15
+#define LOCAL_GL_RED_BITS                                    0x0D52
+#define LOCAL_GL_RED_BIT_ATI                                 0x00000001
+#define LOCAL_GL_RED_EXT                                     0x1903
+#define LOCAL_GL_RED_INTEGER                                 0x8D94
+#define LOCAL_GL_RED_INTEGER_EXT                             0x8D94
+#define LOCAL_GL_RED_MAX_CLAMP_INGR                          0x8564
+#define LOCAL_GL_RED_MIN_CLAMP_INGR                          0x8560
+#define LOCAL_GL_RED_NV                                      0x1903
+#define LOCAL_GL_RED_SCALE                                   0x0D14
+#define LOCAL_GL_RED_SNORM                                   0x8F90
+#define LOCAL_GL_REFERENCED_BY_COMPUTE_SHADER                0x930B
+#define LOCAL_GL_REFERENCED_BY_FRAGMENT_SHADER               0x930A
+#define LOCAL_GL_REFERENCED_BY_GEOMETRY_SHADER               0x9309
+#define LOCAL_GL_REFERENCED_BY_GEOMETRY_SHADER_EXT           0x9309
+#define LOCAL_GL_REFERENCED_BY_GEOMETRY_SHADER_OES           0x9309
+#define LOCAL_GL_REFERENCED_BY_MESH_SHADER_NV                0x95A0
+#define LOCAL_GL_REFERENCED_BY_TASK_SHADER_NV                0x95A1
+#define LOCAL_GL_REFERENCED_BY_TESS_CONTROL_SHADER           0x9307
+#define LOCAL_GL_REFERENCED_BY_TESS_CONTROL_SHADER_EXT       0x9307
+#define LOCAL_GL_REFERENCED_BY_TESS_CONTROL_SHADER_OES       0x9307
+#define LOCAL_GL_REFERENCED_BY_TESS_EVALUATION_SHADER        0x9308
+#define LOCAL_GL_REFERENCED_BY_TESS_EVALUATION_SHADER_EXT    0x9308
+#define LOCAL_GL_REFERENCED_BY_TESS_EVALUATION_SHADER_OES    0x9308
+#define LOCAL_GL_REFERENCED_BY_VERTEX_SHADER                 0x9306
+#define LOCAL_GL_REFERENCE_PLANE_EQUATION_SGIX               0x817E
+#define LOCAL_GL_REFERENCE_PLANE_SGIX                        0x817D
+#define LOCAL_GL_REFLECTION_MAP                              0x8512
+#define LOCAL_GL_REFLECTION_MAP_ARB                          0x8512
+#define LOCAL_GL_REFLECTION_MAP_EXT                          0x8512
+#define LOCAL_GL_REFLECTION_MAP_NV                           0x8512
+#define LOCAL_GL_REFLECTION_MAP_OES                          0x8512
+#define LOCAL_GL_REGISTER_COMBINERS_NV                       0x8522
+#define LOCAL_GL_REG_0_ATI                                   0x8921
+#define LOCAL_GL_REG_10_ATI                                  0x892B
+#define LOCAL_GL_REG_11_ATI                                  0x892C
+#define LOCAL_GL_REG_12_ATI                                  0x892D
+#define LOCAL_GL_REG_13_ATI                                  0x892E
+#define LOCAL_GL_REG_14_ATI                                  0x892F
+#define LOCAL_GL_REG_15_ATI                                  0x8930
+#define LOCAL_GL_REG_16_ATI                                  0x8931
+#define LOCAL_GL_REG_17_ATI                                  0x8932
+#define LOCAL_GL_REG_18_ATI                                  0x8933
+#define LOCAL_GL_REG_19_ATI                                  0x8934
+#define LOCAL_GL_REG_1_ATI                                   0x8922
+#define LOCAL_GL_REG_20_ATI                                  0x8935
+#define LOCAL_GL_REG_21_ATI                                  0x8936
+#define LOCAL_GL_REG_22_ATI                                  0x8937
+#define LOCAL_GL_REG_23_ATI                                  0x8938
+#define LOCAL_GL_REG_24_ATI                                  0x8939
+#define LOCAL_GL_REG_25_ATI                                  0x893A
+#define LOCAL_GL_REG_26_ATI                                  0x893B
+#define LOCAL_GL_REG_27_ATI                                  0x893C
+#define LOCAL_GL_REG_28_ATI                                  0x893D
+#define LOCAL_GL_REG_29_ATI                                  0x893E
+#define LOCAL_GL_REG_2_ATI                                   0x8923
+#define LOCAL_GL_REG_30_ATI                                  0x893F
+#define LOCAL_GL_REG_31_ATI                                  0x8940
+#define LOCAL_GL_REG_3_ATI                                   0x8924
+#define LOCAL_GL_REG_4_ATI                                   0x8925
+#define LOCAL_GL_REG_5_ATI                                   0x8926
+#define LOCAL_GL_REG_6_ATI                                   0x8927
+#define LOCAL_GL_REG_7_ATI                                   0x8928
+#define LOCAL_GL_REG_8_ATI                                   0x8929
+#define LOCAL_GL_REG_9_ATI                                   0x892A
+#define LOCAL_GL_RELATIVE_ARC_TO_NV                          0xFF
+#define LOCAL_GL_RELATIVE_CONIC_CURVE_TO_NV                  0x1B
+#define LOCAL_GL_RELATIVE_CUBIC_CURVE_TO_NV                  0x0D
+#define LOCAL_GL_RELATIVE_HORIZONTAL_LINE_TO_NV              0x07
+#define LOCAL_GL_RELATIVE_LARGE_CCW_ARC_TO_NV                0x17
+#define LOCAL_GL_RELATIVE_LARGE_CW_ARC_TO_NV                 0x19
+#define LOCAL_GL_RELATIVE_LINE_TO_NV                         0x05
+#define LOCAL_GL_RELATIVE_MOVE_TO_NV                         0x03
+#define LOCAL_GL_RELATIVE_QUADRATIC_CURVE_TO_NV              0x0B
+#define LOCAL_GL_RELATIVE_RECT_NV                            0xF7
+#define LOCAL_GL_RELATIVE_ROUNDED_RECT2_NV                   0xEB
+#define LOCAL_GL_RELATIVE_ROUNDED_RECT4_NV                   0xED
+#define LOCAL_GL_RELATIVE_ROUNDED_RECT8_NV                   0xEF
+#define LOCAL_GL_RELATIVE_ROUNDED_RECT_NV                    0xE9
+#define LOCAL_GL_RELATIVE_SMALL_CCW_ARC_TO_NV                0x13
+#define LOCAL_GL_RELATIVE_SMALL_CW_ARC_TO_NV                 0x15
+#define LOCAL_GL_RELATIVE_SMOOTH_CUBIC_CURVE_TO_NV           0x11
+#define LOCAL_GL_RELATIVE_SMOOTH_QUADRATIC_CURVE_TO_NV       0x0F
+#define LOCAL_GL_RELATIVE_VERTICAL_LINE_TO_NV                0x09
+#define LOCAL_GL_RELEASED_APPLE                              0x8A19
+#define LOCAL_GL_RENDER                                      0x1C00
+#define LOCAL_GL_RENDERBUFFER                                0x8D41
+#define LOCAL_GL_RENDERBUFFER_ALPHA_SIZE                     0x8D53
+#define LOCAL_GL_RENDERBUFFER_ALPHA_SIZE_EXT                 0x8D53
+#define LOCAL_GL_RENDERBUFFER_ALPHA_SIZE_OES                 0x8D53
+#define LOCAL_GL_RENDERBUFFER_BINDING                        0x8CA7
+#define LOCAL_GL_RENDERBUFFER_BINDING_ANGLE                  0x8CA7
+#define LOCAL_GL_RENDERBUFFER_BINDING_EXT                    0x8CA7
+#define LOCAL_GL_RENDERBUFFER_BINDING_OES                    0x8CA7
+#define LOCAL_GL_RENDERBUFFER_BLUE_SIZE                      0x8D52
+#define LOCAL_GL_RENDERBUFFER_BLUE_SIZE_EXT                  0x8D52
+#define LOCAL_GL_RENDERBUFFER_BLUE_SIZE_OES                  0x8D52
+#define LOCAL_GL_RENDERBUFFER_COLOR_SAMPLES_NV               0x8E10
+#define LOCAL_GL_RENDERBUFFER_COVERAGE_SAMPLES_NV            0x8CAB
+#define LOCAL_GL_RENDERBUFFER_DEPTH_SIZE                     0x8D54
+#define LOCAL_GL_RENDERBUFFER_DEPTH_SIZE_EXT                 0x8D54
+#define LOCAL_GL_RENDERBUFFER_DEPTH_SIZE_OES                 0x8D54
+#define LOCAL_GL_RENDERBUFFER_EXT                            0x8D41
+#define LOCAL_GL_RENDERBUFFER_FREE_MEMORY_ATI                0x87FD
+#define LOCAL_GL_RENDERBUFFER_GREEN_SIZE                     0x8D51
+#define LOCAL_GL_RENDERBUFFER_GREEN_SIZE_EXT                 0x8D51
+#define LOCAL_GL_RENDERBUFFER_GREEN_SIZE_OES                 0x8D51
+#define LOCAL_GL_RENDERBUFFER_HEIGHT                         0x8D43
+#define LOCAL_GL_RENDERBUFFER_HEIGHT_EXT                     0x8D43
+#define LOCAL_GL_RENDERBUFFER_HEIGHT_OES                     0x8D43
+#define LOCAL_GL_RENDERBUFFER_INTERNAL_FORMAT                0x8D44
+#define LOCAL_GL_RENDERBUFFER_INTERNAL_FORMAT_EXT            0x8D44
+#define LOCAL_GL_RENDERBUFFER_INTERNAL_FORMAT_OES            0x8D44
+#define LOCAL_GL_RENDERBUFFER_OES                            0x8D41
+#define LOCAL_GL_RENDERBUFFER_RED_SIZE                       0x8D50
+#define LOCAL_GL_RENDERBUFFER_RED_SIZE_EXT                   0x8D50
+#define LOCAL_GL_RENDERBUFFER_RED_SIZE_OES                   0x8D50
+#define LOCAL_GL_RENDERBUFFER_SAMPLES                        0x8CAB
+#define LOCAL_GL_RENDERBUFFER_SAMPLES_ANGLE                  0x8CAB
+#define LOCAL_GL_RENDERBUFFER_SAMPLES_APPLE                  0x8CAB
+#define LOCAL_GL_RENDERBUFFER_SAMPLES_EXT                    0x8CAB
+#define LOCAL_GL_RENDERBUFFER_SAMPLES_IMG                    0x9133
+#define LOCAL_GL_RENDERBUFFER_SAMPLES_NV                     0x8CAB
+#define LOCAL_GL_RENDERBUFFER_STENCIL_SIZE                   0x8D55
+#define LOCAL_GL_RENDERBUFFER_STENCIL_SIZE_EXT               0x8D55
+#define LOCAL_GL_RENDERBUFFER_STENCIL_SIZE_OES               0x8D55
+#define LOCAL_GL_RENDERBUFFER_STORAGE_SAMPLES_AMD            0x91B2
+#define LOCAL_GL_RENDERBUFFER_WIDTH                          0x8D42
+#define LOCAL_GL_RENDERBUFFER_WIDTH_EXT                      0x8D42
+#define LOCAL_GL_RENDERBUFFER_WIDTH_OES                      0x8D42
+#define LOCAL_GL_RENDERER                                    0x1F01
+#define LOCAL_GL_RENDER_DIRECT_TO_FRAMEBUFFER_QCOM           0x8FB3
+#define LOCAL_GL_RENDER_GPU_MASK_NV                          0x9558
+#define LOCAL_GL_RENDER_MODE                                 0x0C40
+#define LOCAL_GL_REPEAT                                      0x2901
+#define LOCAL_GL_REPLACE                                     0x1E01
+#define LOCAL_GL_REPLACEMENT_CODE_ARRAY_POINTER_SUN          0x85C3
+#define LOCAL_GL_REPLACEMENT_CODE_ARRAY_STRIDE_SUN           0x85C2
+#define LOCAL_GL_REPLACEMENT_CODE_ARRAY_SUN                  0x85C0
+#define LOCAL_GL_REPLACEMENT_CODE_ARRAY_TYPE_SUN             0x85C1
+#define LOCAL_GL_REPLACEMENT_CODE_SUN                        0x81D8
+#define LOCAL_GL_REPLACE_EXT                                 0x8062
+#define LOCAL_GL_REPLACE_MIDDLE_SUN                          0x0002
+#define LOCAL_GL_REPLACE_OLDEST_SUN                          0x0003
+#define LOCAL_GL_REPLACE_VALUE_AMD                           0x874B
+#define LOCAL_GL_REPLICATE_BORDER                            0x8153
+#define LOCAL_GL_REPLICATE_BORDER_HP                         0x8153
+#define LOCAL_GL_REPRESENTATIVE_FRAGMENT_TEST_NV             0x937F
+#define LOCAL_GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES            0x8D68
+#define LOCAL_GL_RESAMPLE_AVERAGE_OML                        0x8988
+#define LOCAL_GL_RESAMPLE_DECIMATE_OML                       0x8989
+#define LOCAL_GL_RESAMPLE_DECIMATE_SGIX                      0x8430
+#define LOCAL_GL_RESAMPLE_REPLICATE_OML                      0x8986
+#define LOCAL_GL_RESAMPLE_REPLICATE_SGIX                     0x8433
+#define LOCAL_GL_RESAMPLE_ZERO_FILL_OML                      0x8987
+#define LOCAL_GL_RESAMPLE_ZERO_FILL_SGIX                     0x8434
+#define LOCAL_GL_RESCALE_NORMAL                              0x803A
+#define LOCAL_GL_RESCALE_NORMAL_EXT                          0x803A
+#define LOCAL_GL_RESET_NOTIFICATION_STRATEGY                 0x8256
+#define LOCAL_GL_RESET_NOTIFICATION_STRATEGY_ARB             0x8256
+#define LOCAL_GL_RESET_NOTIFICATION_STRATEGY_EXT             0x8256
+#define LOCAL_GL_RESET_NOTIFICATION_STRATEGY_KHR             0x8256
+#define LOCAL_GL_RESTART_PATH_NV                             0xF0
+#define LOCAL_GL_RESTART_SUN                                 0x0001
+#define LOCAL_GL_RETAINED_APPLE                              0x8A1B
+#define LOCAL_GL_RETURN                                      0x0102
+#define LOCAL_GL_RG                                          0x8227
+#define LOCAL_GL_RG16                                        0x822C
+#define LOCAL_GL_RG16F                                       0x822F
+#define LOCAL_GL_RG16F_EXT                                   0x822F
+#define LOCAL_GL_RG16I                                       0x8239
+#define LOCAL_GL_RG16UI                                      0x823A
+#define LOCAL_GL_RG16_EXT                                    0x822C
+#define LOCAL_GL_RG16_SNORM                                  0x8F99
+#define LOCAL_GL_RG16_SNORM_EXT                              0x8F99
+#define LOCAL_GL_RG32F                                       0x8230
+#define LOCAL_GL_RG32F_EXT                                   0x8230
+#define LOCAL_GL_RG32I                                       0x823B
+#define LOCAL_GL_RG32UI                                      0x823C
+#define LOCAL_GL_RG8                                         0x822B
+#define LOCAL_GL_RG8I                                        0x8237
+#define LOCAL_GL_RG8UI                                       0x8238
+#define LOCAL_GL_RG8_EXT                                     0x822B
+#define LOCAL_GL_RG8_SNORM                                   0x8F95
+#define LOCAL_GL_RGB                                         0x1907
+#define LOCAL_GL_RGB10                                       0x8052
+#define LOCAL_GL_RGB10_A2                                    0x8059
+#define LOCAL_GL_RGB10_A2UI                                  0x906F
+#define LOCAL_GL_RGB10_A2_EXT                                0x8059
+#define LOCAL_GL_RGB10_EXT                                   0x8052
+#define LOCAL_GL_RGB12                                       0x8053
+#define LOCAL_GL_RGB12_EXT                                   0x8053
+#define LOCAL_GL_RGB16                                       0x8054
+#define LOCAL_GL_RGB16F                                      0x881B
+#define LOCAL_GL_RGB16F_ARB                                  0x881B
+#define LOCAL_GL_RGB16F_EXT                                  0x881B
+#define LOCAL_GL_RGB16I                                      0x8D89
+#define LOCAL_GL_RGB16I_EXT                                  0x8D89
+#define LOCAL_GL_RGB16UI                                     0x8D77
+#define LOCAL_GL_RGB16UI_EXT                                 0x8D77
+#define LOCAL_GL_RGB16_EXT                                   0x8054
+#define LOCAL_GL_RGB16_SNORM                                 0x8F9A
+#define LOCAL_GL_RGB16_SNORM_EXT                             0x8F9A
+#define LOCAL_GL_RGB2_EXT                                    0x804E
+#define LOCAL_GL_RGB32F                                      0x8815
+#define LOCAL_GL_RGB32F_ARB                                  0x8815
+#define LOCAL_GL_RGB32F_EXT                                  0x8815
+#define LOCAL_GL_RGB32I                                      0x8D83
+#define LOCAL_GL_RGB32I_EXT                                  0x8D83
+#define LOCAL_GL_RGB32UI                                     0x8D71
+#define LOCAL_GL_RGB32UI_EXT                                 0x8D71
+#define LOCAL_GL_RGB4                                        0x804F
+#define LOCAL_GL_RGB4_EXT                                    0x804F
+#define LOCAL_GL_RGB4_S3TC                                   0x83A1
+#define LOCAL_GL_RGB5                                        0x8050
+#define LOCAL_GL_RGB565                                      0x8D62
+#define LOCAL_GL_RGB565_OES                                  0x8D62
+#define LOCAL_GL_RGB5_A1                                     0x8057
+#define LOCAL_GL_RGB5_A1_EXT                                 0x8057
+#define LOCAL_GL_RGB5_A1_OES                                 0x8057
+#define LOCAL_GL_RGB5_EXT                                    0x8050
+#define LOCAL_GL_RGB8                                        0x8051
+#define LOCAL_GL_RGB8I                                       0x8D8F
+#define LOCAL_GL_RGB8I_EXT                                   0x8D8F
+#define LOCAL_GL_RGB8UI                                      0x8D7D
+#define LOCAL_GL_RGB8UI_EXT                                  0x8D7D
+#define LOCAL_GL_RGB8_EXT                                    0x8051
+#define LOCAL_GL_RGB8_OES                                    0x8051
+#define LOCAL_GL_RGB8_SNORM                                  0x8F96
+#define LOCAL_GL_RGB9_E5                                     0x8C3D
+#define LOCAL_GL_RGB9_E5_APPLE                               0x8C3D
+#define LOCAL_GL_RGB9_E5_EXT                                 0x8C3D
+#define LOCAL_GL_RGBA                                        0x1908
+#define LOCAL_GL_RGBA12                                      0x805A
+#define LOCAL_GL_RGBA12_EXT                                  0x805A
+#define LOCAL_GL_RGBA16                                      0x805B
+#define LOCAL_GL_RGBA16F                                     0x881A
+#define LOCAL_GL_RGBA16F_ARB                                 0x881A
+#define LOCAL_GL_RGBA16F_EXT                                 0x881A
+#define LOCAL_GL_RGBA16I                                     0x8D88
+#define LOCAL_GL_RGBA16I_EXT                                 0x8D88
+#define LOCAL_GL_RGBA16UI                                    0x8D76
+#define LOCAL_GL_RGBA16UI_EXT                                0x8D76
+#define LOCAL_GL_RGBA16_EXT                                  0x805B
+#define LOCAL_GL_RGBA16_SNORM                                0x8F9B
+#define LOCAL_GL_RGBA16_SNORM_EXT                            0x8F9B
+#define LOCAL_GL_RGBA2                                       0x8055
+#define LOCAL_GL_RGBA2_EXT                                   0x8055
+#define LOCAL_GL_RGBA32F                                     0x8814
+#define LOCAL_GL_RGBA32F_ARB                                 0x8814
+#define LOCAL_GL_RGBA32F_EXT                                 0x8814
+#define LOCAL_GL_RGBA32I                                     0x8D82
+#define LOCAL_GL_RGBA32I_EXT                                 0x8D82
+#define LOCAL_GL_RGBA32UI                                    0x8D70
+#define LOCAL_GL_RGBA32UI_EXT                                0x8D70
+#define LOCAL_GL_RGBA4                                       0x8056
+#define LOCAL_GL_RGBA4_DXT5_S3TC                             0x83A5
+#define LOCAL_GL_RGBA4_EXT                                   0x8056
+#define LOCAL_GL_RGBA4_OES                                   0x8056
+#define LOCAL_GL_RGBA4_S3TC                                  0x83A3
+#define LOCAL_GL_RGBA8                                       0x8058
+#define LOCAL_GL_RGBA8I                                      0x8D8E
+#define LOCAL_GL_RGBA8I_EXT                                  0x8D8E
+#define LOCAL_GL_RGBA8UI                                     0x8D7C
+#define LOCAL_GL_RGBA8UI_EXT                                 0x8D7C
+#define LOCAL_GL_RGBA8_EXT                                   0x8058
+#define LOCAL_GL_RGBA8_OES                                   0x8058
+#define LOCAL_GL_RGBA8_SNORM                                 0x8F97
+#define LOCAL_GL_RGBA_DXT5_S3TC                              0x83A4
+#define LOCAL_GL_RGBA_FLOAT16_APPLE                          0x881A
+#define LOCAL_GL_RGBA_FLOAT16_ATI                            0x881A
+#define LOCAL_GL_RGBA_FLOAT32_APPLE                          0x8814
+#define LOCAL_GL_RGBA_FLOAT32_ATI                            0x8814
+#define LOCAL_GL_RGBA_FLOAT_MODE_ARB                         0x8820
+#define LOCAL_GL_RGBA_FLOAT_MODE_ATI                         0x8820
+#define LOCAL_GL_RGBA_INTEGER                                0x8D99
+#define LOCAL_GL_RGBA_INTEGER_EXT                            0x8D99
+#define LOCAL_GL_RGBA_INTEGER_MODE_EXT                       0x8D9E
+#define LOCAL_GL_RGBA_MODE                                   0x0C31
+#define LOCAL_GL_RGBA_S3TC                                   0x83A2
+#define LOCAL_GL_RGBA_SIGNED_COMPONENTS_EXT                  0x8C3C
+#define LOCAL_GL_RGBA_SNORM                                  0x8F93
+#define LOCAL_GL_RGBA_UNSIGNED_DOT_PRODUCT_MAPPING_NV        0x86D9
+#define LOCAL_GL_RGB_422_APPLE                               0x8A1F
+#define LOCAL_GL_RGB_FLOAT16_APPLE                           0x881B
+#define LOCAL_GL_RGB_FLOAT16_ATI                             0x881B
+#define LOCAL_GL_RGB_FLOAT32_APPLE                           0x8815
+#define LOCAL_GL_RGB_FLOAT32_ATI                             0x8815
+#define LOCAL_GL_RGB_INTEGER                                 0x8D98
+#define LOCAL_GL_RGB_INTEGER_EXT                             0x8D98
+#define LOCAL_GL_RGB_RAW_422_APPLE                           0x8A51
+#define LOCAL_GL_RGB_S3TC                                    0x83A0
+#define LOCAL_GL_RGB_SCALE                                   0x8573
+#define LOCAL_GL_RGB_SCALE_ARB                               0x8573
+#define LOCAL_GL_RGB_SCALE_EXT                               0x8573
+#define LOCAL_GL_RGB_SNORM                                   0x8F92
+#define LOCAL_GL_RG_EXT                                      0x8227
+#define LOCAL_GL_RG_INTEGER                                  0x8228
+#define LOCAL_GL_RG_SNORM                                    0x8F91
+#define LOCAL_GL_RIGHT                                       0x0407
+#define LOCAL_GL_ROBUST_GPU_TIMEOUT_MS_KHR                   0x82FD
+#define LOCAL_GL_ROUNDED_RECT2_NV                            0xEA
+#define LOCAL_GL_ROUNDED_RECT4_NV                            0xEC
+#define LOCAL_GL_ROUNDED_RECT8_NV                            0xEE
+#define LOCAL_GL_ROUNDED_RECT_NV                             0xE8
+#define LOCAL_GL_ROUND_NV                                    0x90A4
+#define LOCAL_GL_S                                           0x2000
+#define LOCAL_GL_SAMPLER                                     0x82E6
+#define LOCAL_GL_SAMPLER_1D                                  0x8B5D
+#define LOCAL_GL_SAMPLER_1D_ARB                              0x8B5D
+#define LOCAL_GL_SAMPLER_1D_ARRAY                            0x8DC0
+#define LOCAL_GL_SAMPLER_1D_ARRAY_EXT                        0x8DC0
+#define LOCAL_GL_SAMPLER_1D_ARRAY_SHADOW                     0x8DC3
+#define LOCAL_GL_SAMPLER_1D_ARRAY_SHADOW_EXT                 0x8DC3
+#define LOCAL_GL_SAMPLER_1D_SHADOW                           0x8B61
+#define LOCAL_GL_SAMPLER_1D_SHADOW_ARB                       0x8B61
+#define LOCAL_GL_SAMPLER_2D                                  0x8B5E
+#define LOCAL_GL_SAMPLER_2D_ARB                              0x8B5E
+#define LOCAL_GL_SAMPLER_2D_ARRAY                            0x8DC1
+#define LOCAL_GL_SAMPLER_2D_ARRAY_EXT                        0x8DC1
+#define LOCAL_GL_SAMPLER_2D_ARRAY_SHADOW                     0x8DC4
+#define LOCAL_GL_SAMPLER_2D_ARRAY_SHADOW_EXT                 0x8DC4
+#define LOCAL_GL_SAMPLER_2D_ARRAY_SHADOW_NV                  0x8DC4
+#define LOCAL_GL_SAMPLER_2D_MULTISAMPLE                      0x9108
+#define LOCAL_GL_SAMPLER_2D_MULTISAMPLE_ARRAY                0x910B
+#define LOCAL_GL_SAMPLER_2D_MULTISAMPLE_ARRAY_OES            0x910B
+#define LOCAL_GL_SAMPLER_2D_RECT                             0x8B63
+#define LOCAL_GL_SAMPLER_2D_RECT_ARB                         0x8B63
+#define LOCAL_GL_SAMPLER_2D_RECT_SHADOW                      0x8B64
+#define LOCAL_GL_SAMPLER_2D_RECT_SHADOW_ARB                  0x8B64
+#define LOCAL_GL_SAMPLER_2D_SHADOW                           0x8B62
+#define LOCAL_GL_SAMPLER_2D_SHADOW_ARB                       0x8B62
+#define LOCAL_GL_SAMPLER_2D_SHADOW_EXT                       0x8B62
+#define LOCAL_GL_SAMPLER_3D                                  0x8B5F
+#define LOCAL_GL_SAMPLER_3D_ARB                              0x8B5F
+#define LOCAL_GL_SAMPLER_3D_OES                              0x8B5F
+#define LOCAL_GL_SAMPLER_BINDING                             0x8919
+#define LOCAL_GL_SAMPLER_BUFFER                              0x8DC2
+#define LOCAL_GL_SAMPLER_BUFFER_AMD                          0x9001
+#define LOCAL_GL_SAMPLER_BUFFER_EXT                          0x8DC2
+#define LOCAL_GL_SAMPLER_BUFFER_OES                          0x8DC2
+#define LOCAL_GL_SAMPLER_CUBE                                0x8B60
+#define LOCAL_GL_SAMPLER_CUBE_ARB                            0x8B60
+#define LOCAL_GL_SAMPLER_CUBE_MAP_ARRAY                      0x900C
+#define LOCAL_GL_SAMPLER_CUBE_MAP_ARRAY_ARB                  0x900C
+#define LOCAL_GL_SAMPLER_CUBE_MAP_ARRAY_EXT                  0x900C
+#define LOCAL_GL_SAMPLER_CUBE_MAP_ARRAY_OES                  0x900C
+#define LOCAL_GL_SAMPLER_CUBE_MAP_ARRAY_SHADOW               0x900D
+#define LOCAL_GL_SAMPLER_CUBE_MAP_ARRAY_SHADOW_ARB           0x900D
+#define LOCAL_GL_SAMPLER_CUBE_MAP_ARRAY_SHADOW_EXT           0x900D
+#define LOCAL_GL_SAMPLER_CUBE_MAP_ARRAY_SHADOW_OES           0x900D
+#define LOCAL_GL_SAMPLER_CUBE_SHADOW                         0x8DC5
+#define LOCAL_GL_SAMPLER_CUBE_SHADOW_EXT                     0x8DC5
+#define LOCAL_GL_SAMPLER_CUBE_SHADOW_NV                      0x8DC5
+#define LOCAL_GL_SAMPLER_EXTERNAL_2D_Y2Y_EXT                 0x8BE7
+#define LOCAL_GL_SAMPLER_EXTERNAL_OES                        0x8D66
+#define LOCAL_GL_SAMPLER_KHR                                 0x82E6
+#define LOCAL_GL_SAMPLER_OBJECT_AMD                          0x9155
+#define LOCAL_GL_SAMPLER_RENDERBUFFER_NV                     0x8E56
+#define LOCAL_GL_SAMPLES                                     0x80A9
+#define LOCAL_GL_SAMPLES_3DFX                                0x86B4
+#define LOCAL_GL_SAMPLES_ARB                                 0x80A9
+#define LOCAL_GL_SAMPLES_EXT                                 0x80A9
+#define LOCAL_GL_SAMPLES_PASSED                              0x8914
+#define LOCAL_GL_SAMPLES_PASSED_ARB                          0x8914
+#define LOCAL_GL_SAMPLES_SGIS                                0x80A9
+#define LOCAL_GL_SAMPLE_ALPHA_TO_COVERAGE                    0x809E
+#define LOCAL_GL_SAMPLE_ALPHA_TO_COVERAGE_ARB                0x809E
+#define LOCAL_GL_SAMPLE_ALPHA_TO_MASK_EXT                    0x809E
+#define LOCAL_GL_SAMPLE_ALPHA_TO_MASK_SGIS                   0x809E
+#define LOCAL_GL_SAMPLE_ALPHA_TO_ONE                         0x809F
+#define LOCAL_GL_SAMPLE_ALPHA_TO_ONE_ARB                     0x809F
+#define LOCAL_GL_SAMPLE_ALPHA_TO_ONE_EXT                     0x809F
+#define LOCAL_GL_SAMPLE_ALPHA_TO_ONE_SGIS                    0x809F
+#define LOCAL_GL_SAMPLE_BUFFERS                              0x80A8
+#define LOCAL_GL_SAMPLE_BUFFERS_3DFX                         0x86B3
+#define LOCAL_GL_SAMPLE_BUFFERS_ARB                          0x80A8
+#define LOCAL_GL_SAMPLE_BUFFERS_EXT                          0x80A8
+#define LOCAL_GL_SAMPLE_BUFFERS_SGIS                         0x80A8
+#define LOCAL_GL_SAMPLE_COVERAGE                             0x80A0
+#define LOCAL_GL_SAMPLE_COVERAGE_ARB                         0x80A0
+#define LOCAL_GL_SAMPLE_COVERAGE_INVERT                      0x80AB
+#define LOCAL_GL_SAMPLE_COVERAGE_INVERT_ARB                  0x80AB
+#define LOCAL_GL_SAMPLE_COVERAGE_VALUE                       0x80AA
+#define LOCAL_GL_SAMPLE_COVERAGE_VALUE_ARB                   0x80AA
+#define LOCAL_GL_SAMPLE_LOCATION_ARB                         0x8E50
+#define LOCAL_GL_SAMPLE_LOCATION_NV                          0x8E50
+#define LOCAL_GL_SAMPLE_LOCATION_PIXEL_GRID_HEIGHT_ARB       0x933F
+#define LOCAL_GL_SAMPLE_LOCATION_PIXEL_GRID_HEIGHT_NV        0x933F
+#define LOCAL_GL_SAMPLE_LOCATION_PIXEL_GRID_WIDTH_ARB        0x933E
+#define LOCAL_GL_SAMPLE_LOCATION_PIXEL_GRID_WIDTH_NV         0x933E
+#define LOCAL_GL_SAMPLE_LOCATION_SUBPIXEL_BITS_ARB           0x933D
+#define LOCAL_GL_SAMPLE_LOCATION_SUBPIXEL_BITS_NV            0x933D
+#define LOCAL_GL_SAMPLE_MASK                                 0x8E51
+#define LOCAL_GL_SAMPLE_MASK_EXT                             0x80A0
+#define LOCAL_GL_SAMPLE_MASK_INVERT_EXT                      0x80AB
+#define LOCAL_GL_SAMPLE_MASK_INVERT_SGIS                     0x80AB
+#define LOCAL_GL_SAMPLE_MASK_NV                              0x8E51
+#define LOCAL_GL_SAMPLE_MASK_SGIS                            0x80A0
+#define LOCAL_GL_SAMPLE_MASK_VALUE                           0x8E52
+#define LOCAL_GL_SAMPLE_MASK_VALUE_EXT                       0x80AA
+#define LOCAL_GL_SAMPLE_MASK_VALUE_NV                        0x8E52
+#define LOCAL_GL_SAMPLE_MASK_VALUE_SGIS                      0x80AA
+#define LOCAL_GL_SAMPLE_PATTERN_EXT                          0x80AC
+#define LOCAL_GL_SAMPLE_PATTERN_SGIS                         0x80AC
+#define LOCAL_GL_SAMPLE_POSITION                             0x8E50
+#define LOCAL_GL_SAMPLE_POSITION_NV                          0x8E50
+#define LOCAL_GL_SAMPLE_SHADING                              0x8C36
+#define LOCAL_GL_SAMPLE_SHADING_ARB                          0x8C36
+#define LOCAL_GL_SAMPLE_SHADING_OES                          0x8C36
+#define LOCAL_GL_SATURATE_BIT_ATI                            0x00000040
+#define LOCAL_GL_SCALAR_EXT                                  0x87BE
+#define LOCAL_GL_SCALEBIAS_HINT_SGIX                         0x8322
+#define LOCAL_GL_SCALED_RESOLVE_FASTEST_EXT                  0x90BA
+#define LOCAL_GL_SCALED_RESOLVE_NICEST_EXT                   0x90BB
+#define LOCAL_GL_SCALE_BY_FOUR_NV                            0x853F
+#define LOCAL_GL_SCALE_BY_ONE_HALF_NV                        0x8540
+#define LOCAL_GL_SCALE_BY_TWO_NV                             0x853E
+#define LOCAL_GL_SCISSOR_BIT                                 0x00080000
+#define LOCAL_GL_SCISSOR_BOX                                 0x0C10
+#define LOCAL_GL_SCISSOR_BOX_EXCLUSIVE_NV                    0x9556
+#define LOCAL_GL_SCISSOR_COMMAND_NV                          0x0011
+#define LOCAL_GL_SCISSOR_TEST                                0x0C11
+#define LOCAL_GL_SCISSOR_TEST_EXCLUSIVE_NV                   0x9555
+#define LOCAL_GL_SCREEN                                      0x9295
+#define LOCAL_GL_SCREEN_COORDINATES_REND                     0x8490
+#define LOCAL_GL_SCREEN_KHR                                  0x9295
+#define LOCAL_GL_SCREEN_NV                                   0x9295
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY                       0x845E
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_ADDRESS_NV            0x8F27
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING        0x889C
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB    0x889C
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_EXT                   0x845E
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_LENGTH_NV             0x8F31
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_LIST_IBM              103077
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_LIST_STRIDE_IBM       103087
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_POINTER               0x845D
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_POINTER_EXT           0x845D
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_SIZE                  0x845A
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_SIZE_EXT              0x845A
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_STRIDE                0x845C
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT            0x845C
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_TYPE                  0x845B
+#define LOCAL_GL_SECONDARY_COLOR_ARRAY_TYPE_EXT              0x845B
+#define LOCAL_GL_SECONDARY_COLOR_NV                          0x852D
+#define LOCAL_GL_SECONDARY_INTERPOLATOR_ATI                  0x896D
+#define LOCAL_GL_SELECT                                      0x1C02
+#define LOCAL_GL_SELECTION_BUFFER_POINTER                    0x0DF3
+#define LOCAL_GL_SELECTION_BUFFER_SIZE                       0x0DF4
+#define LOCAL_GL_SEMAPHORE_TYPE_BINARY_NV                    0x95B4
+#define LOCAL_GL_SEMAPHORE_TYPE_NV                           0x95B3
+#define LOCAL_GL_SEMAPHORE_TYPE_TIMELINE_NV                  0x95B5
+#define LOCAL_GL_SEPARABLE_2D                                0x8012
+#define LOCAL_GL_SEPARABLE_2D_EXT                            0x8012
+#define LOCAL_GL_SEPARATE_ATTRIBS                            0x8C8D
+#define LOCAL_GL_SEPARATE_ATTRIBS_EXT                        0x8C8D
+#define LOCAL_GL_SEPARATE_ATTRIBS_NV                         0x8C8D
+#define LOCAL_GL_SEPARATE_SPECULAR_COLOR                     0x81FA
+#define LOCAL_GL_SEPARATE_SPECULAR_COLOR_EXT                 0x81FA
+#define LOCAL_GL_SET                                         0x150F
+#define LOCAL_GL_SET_AMD                                     0x874A
+#define LOCAL_GL_SGX_BINARY_IMG                              0x8C0A
+#define LOCAL_GL_SGX_PROGRAM_BINARY_IMG                      0x9130
+#define LOCAL_GL_SHADER                                      0x82E1
+#define LOCAL_GL_SHADER_BINARY_DMP                           0x9250
+#define LOCAL_GL_SHADER_BINARY_FORMATS                       0x8DF8
+#define LOCAL_GL_SHADER_BINARY_FORMAT_SPIR_V                 0x9551
+#define LOCAL_GL_SHADER_BINARY_FORMAT_SPIR_V_ARB             0x9551
+#define LOCAL_GL_SHADER_BINARY_VIV                           0x8FC4
+#define LOCAL_GL_SHADER_COMPILER                             0x8DFA
+#define LOCAL_GL_SHADER_CONSISTENT_NV                        0x86DD
+#define LOCAL_GL_SHADER_GLOBAL_ACCESS_BARRIER_BIT_NV         0x00000010
+#define LOCAL_GL_SHADER_IMAGE_ACCESS_BARRIER_BIT             0x00000020
+#define LOCAL_GL_SHADER_IMAGE_ACCESS_BARRIER_BIT_EXT         0x00000020
+#define LOCAL_GL_SHADER_IMAGE_ATOMIC                         0x82A6
+#define LOCAL_GL_SHADER_IMAGE_LOAD                           0x82A4
+#define LOCAL_GL_SHADER_IMAGE_STORE                          0x82A5
+#define LOCAL_GL_SHADER_INCLUDE_ARB                          0x8DAE
+#define LOCAL_GL_SHADER_KHR                                  0x82E1
+#define LOCAL_GL_SHADER_OBJECT_ARB                           0x8B48
+#define LOCAL_GL_SHADER_OBJECT_EXT                           0x8B48
+#define LOCAL_GL_SHADER_OPERATION_NV                         0x86DF
+#define LOCAL_GL_SHADER_PIXEL_LOCAL_STORAGE_EXT              0x8F64
+#define LOCAL_GL_SHADER_SOURCE_LENGTH                        0x8B88
+#define LOCAL_GL_SHADER_STORAGE_BARRIER_BIT                  0x00002000
+#define LOCAL_GL_SHADER_STORAGE_BLOCK                        0x92E6
+#define LOCAL_GL_SHADER_STORAGE_BUFFER                       0x90D2
+#define LOCAL_GL_SHADER_STORAGE_BUFFER_BINDING               0x90D3
+#define LOCAL_GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT      0x90DF
+#define LOCAL_GL_SHADER_STORAGE_BUFFER_SIZE                  0x90D5
+#define LOCAL_GL_SHADER_STORAGE_BUFFER_START                 0x90D4
+#define LOCAL_GL_SHADER_TYPE                                 0x8B4F
+#define LOCAL_GL_SHADE_MODEL                                 0x0B54
+#define LOCAL_GL_SHADING_LANGUAGE_VERSION                    0x8B8C
+#define LOCAL_GL_SHADING_LANGUAGE_VERSION_ARB                0x8B8C
+#define LOCAL_GL_SHADING_RATE_16_INVOCATIONS_PER_PIXEL_NV    0x956F
+#define LOCAL_GL_SHADING_RATE_1X1_PIXELS_QCOM                0x96A6
+#define LOCAL_GL_SHADING_RATE_1X2_PIXELS_QCOM                0x96A7
+#define LOCAL_GL_SHADING_RATE_1X4_PIXELS_QCOM                0x96AA
+#define LOCAL_GL_SHADING_RATE_1_INVOCATION_PER_1X2_PIXELS_NV 0x9566
+#define LOCAL_GL_SHADING_RATE_1_INVOCATION_PER_2X1_PIXELS_NV 0x9567
+#define LOCAL_GL_SHADING_RATE_1_INVOCATION_PER_2X2_PIXELS_NV 0x9568
+#define LOCAL_GL_SHADING_RATE_1_INVOCATION_PER_2X4_PIXELS_NV 0x9569
+#define LOCAL_GL_SHADING_RATE_1_INVOCATION_PER_4X2_PIXELS_NV 0x956A
+#define LOCAL_GL_SHADING_RATE_1_INVOCATION_PER_4X4_PIXELS_NV 0x956B
+#define LOCAL_GL_SHADING_RATE_1_INVOCATION_PER_PIXEL_NV      0x9565
+#define LOCAL_GL_SHADING_RATE_2X1_PIXELS_QCOM                0x96A8
+#define LOCAL_GL_SHADING_RATE_2X2_PIXELS_QCOM                0x96A9
+#define LOCAL_GL_SHADING_RATE_2X4_PIXELS_QCOM                0x96AD
+#define LOCAL_GL_SHADING_RATE_2_INVOCATIONS_PER_PIXEL_NV     0x956C
+#define LOCAL_GL_SHADING_RATE_4X1_PIXELS_QCOM                0x96AB
+#define LOCAL_GL_SHADING_RATE_4X2_PIXELS_QCOM                0x96AC
+#define LOCAL_GL_SHADING_RATE_4X4_PIXELS_QCOM                0x96AE
+#define LOCAL_GL_SHADING_RATE_4_INVOCATIONS_PER_PIXEL_NV     0x956D
+#define LOCAL_GL_SHADING_RATE_8_INVOCATIONS_PER_PIXEL_NV     0x956E
+#define LOCAL_GL_SHADING_RATE_IMAGE_BINDING_NV               0x955B
+#define LOCAL_GL_SHADING_RATE_IMAGE_NV                       0x9563
+#define LOCAL_GL_SHADING_RATE_IMAGE_PALETTE_COUNT_NV         0x95B2
+#define LOCAL_GL_SHADING_RATE_IMAGE_PALETTE_SIZE_NV          0x955E
+#define LOCAL_GL_SHADING_RATE_IMAGE_PER_PRIMITIVE_NV         0x95B1
+#define LOCAL_GL_SHADING_RATE_IMAGE_TEXEL_HEIGHT_NV          0x955D
+#define LOCAL_GL_SHADING_RATE_IMAGE_TEXEL_WIDTH_NV           0x955C
+#define LOCAL_GL_SHADING_RATE_NO_INVOCATIONS_NV              0x9564
+#define LOCAL_GL_SHADING_RATE_PRESERVE_ASPECT_RATIO_QCOM     0x96A5
+#define LOCAL_GL_SHADING_RATE_QCOM                           0x96A4
+#define LOCAL_GL_SHADING_RATE_SAMPLE_ORDER_DEFAULT_NV        0x95AE
+#define LOCAL_GL_SHADING_RATE_SAMPLE_ORDER_PIXEL_MAJOR_NV    0x95AF
+#define LOCAL_GL_SHADING_RATE_SAMPLE_ORDER_SAMPLE_MAJOR_NV   0x95B0
+#define LOCAL_GL_SHADOW_AMBIENT_SGIX                         0x80BF
+#define LOCAL_GL_SHADOW_ATTENUATION_EXT                      0x834E
+#define LOCAL_GL_SHARED_EDGE_NV                              0xC0
+#define LOCAL_GL_SHARED_TEXTURE_PALETTE_EXT                  0x81FB
+#define LOCAL_GL_SHARPEN_TEXTURE_FUNC_POINTS_SGIS            0x80B0
+#define LOCAL_GL_SHININESS                                   0x1601
+#define LOCAL_GL_SHORT                                       0x1402
+#define LOCAL_GL_SIGNALED                                    0x9119
+#define LOCAL_GL_SIGNALED_APPLE                              0x9119
+#define LOCAL_GL_SIGNED_ALPHA8_NV                            0x8706
+#define LOCAL_GL_SIGNED_ALPHA_NV                             0x8705
+#define LOCAL_GL_SIGNED_HILO16_NV                            0x86FA
+#define LOCAL_GL_SIGNED_HILO8_NV                             0x885F
+#define LOCAL_GL_SIGNED_HILO_NV                              0x86F9
+#define LOCAL_GL_SIGNED_IDENTITY_NV                          0x853C
+#define LOCAL_GL_SIGNED_INTENSITY8_NV                        0x8708
+#define LOCAL_GL_SIGNED_INTENSITY_NV                         0x8707
+#define LOCAL_GL_SIGNED_LUMINANCE8_ALPHA8_NV                 0x8704
+#define LOCAL_GL_SIGNED_LUMINANCE8_NV                        0x8702
+#define LOCAL_GL_SIGNED_LUMINANCE_ALPHA_NV                   0x8703
+#define LOCAL_GL_SIGNED_LUMINANCE_NV                         0x8701
+#define LOCAL_GL_SIGNED_NEGATE_NV                            0x853D
+#define LOCAL_GL_SIGNED_NORMALIZED                           0x8F9C
+#define LOCAL_GL_SIGNED_RGB8_NV                              0x86FF
+#define LOCAL_GL_SIGNED_RGB8_UNSIGNED_ALPHA8_NV              0x870D
+#define LOCAL_GL_SIGNED_RGBA8_NV                             0x86FC
+#define LOCAL_GL_SIGNED_RGBA_NV                              0x86FB
+#define LOCAL_GL_SIGNED_RGB_NV                               0x86FE
+#define LOCAL_GL_SIGNED_RGB_UNSIGNED_ALPHA_NV                0x870C
+#define LOCAL_GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST         0x82AC
+#define LOCAL_GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE        0x82AE
+#define LOCAL_GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST       0x82AD
+#define LOCAL_GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE      0x82AF
+#define LOCAL_GL_SINGLE_COLOR                                0x81F9
+#define LOCAL_GL_SINGLE_COLOR_EXT                            0x81F9
+#define LOCAL_GL_SKIP_COMPONENTS1_NV                         -6
+#define LOCAL_GL_SKIP_COMPONENTS2_NV                         -5
+#define LOCAL_GL_SKIP_COMPONENTS3_NV                         -4
+#define LOCAL_GL_SKIP_COMPONENTS4_NV                         -3
+#define LOCAL_GL_SKIP_DECODE_EXT                             0x8A4A
+#define LOCAL_GL_SKIP_MISSING_GLYPH_NV                       0x90A9
+#define LOCAL_GL_SLICE_ACCUM_SUN                             0x85CC
+#define LOCAL_GL_SLIM10U_SGIX                                0x831E
+#define LOCAL_GL_SLIM12S_SGIX                                0x831F
+#define LOCAL_GL_SLIM8U_SGIX                                 0x831D
+#define LOCAL_GL_SLUMINANCE                                  0x8C46
+#define LOCAL_GL_SLUMINANCE8                                 0x8C47
+#define LOCAL_GL_SLUMINANCE8_ALPHA8                          0x8C45
+#define LOCAL_GL_SLUMINANCE8_ALPHA8_EXT                      0x8C45
+#define LOCAL_GL_SLUMINANCE8_ALPHA8_NV                       0x8C45
+#define LOCAL_GL_SLUMINANCE8_EXT                             0x8C47
+#define LOCAL_GL_SLUMINANCE8_NV                              0x8C47
+#define LOCAL_GL_SLUMINANCE_ALPHA                            0x8C44
+#define LOCAL_GL_SLUMINANCE_ALPHA_EXT                        0x8C44
+#define LOCAL_GL_SLUMINANCE_ALPHA_NV                         0x8C44
+#define LOCAL_GL_SLUMINANCE_EXT                              0x8C46
+#define LOCAL_GL_SLUMINANCE_NV                               0x8C46
+#define LOCAL_GL_SMALL_CCW_ARC_TO_NV                         0x12
+#define LOCAL_GL_SMALL_CW_ARC_TO_NV                          0x14
+#define LOCAL_GL_SMAPHS30_PROGRAM_BINARY_DMP                 0x9251
+#define LOCAL_GL_SMAPHS_PROGRAM_BINARY_DMP                   0x9252
+#define LOCAL_GL_SMOOTH                                      0x1D01
+#define LOCAL_GL_SMOOTH_CUBIC_CURVE_TO_NV                    0x10
+#define LOCAL_GL_SMOOTH_LINE_WIDTH_GRANULARITY               0x0B23
+#define LOCAL_GL_SMOOTH_LINE_WIDTH_RANGE                     0x0B22
+#define LOCAL_GL_SMOOTH_POINT_SIZE_GRANULARITY               0x0B13
+#define LOCAL_GL_SMOOTH_POINT_SIZE_RANGE                     0x0B12
+#define LOCAL_GL_SMOOTH_QUADRATIC_CURVE_TO_NV                0x0E
+#define LOCAL_GL_SM_COUNT_NV                                 0x933B
+#define LOCAL_GL_SOFTLIGHT                                   0x929C
+#define LOCAL_GL_SOFTLIGHT_KHR                               0x929C
+#define LOCAL_GL_SOFTLIGHT_NV                                0x929C
+#define LOCAL_GL_SOURCE0_ALPHA                               0x8588
+#define LOCAL_GL_SOURCE0_ALPHA_ARB                           0x8588
+#define LOCAL_GL_SOURCE0_ALPHA_EXT                           0x8588
+#define LOCAL_GL_SOURCE0_RGB                                 0x8580
+#define LOCAL_GL_SOURCE0_RGB_ARB                             0x8580
+#define LOCAL_GL_SOURCE0_RGB_EXT                             0x8580
+#define LOCAL_GL_SOURCE1_ALPHA                               0x8589
+#define LOCAL_GL_SOURCE1_ALPHA_ARB                           0x8589
+#define LOCAL_GL_SOURCE1_ALPHA_EXT                           0x8589
+#define LOCAL_GL_SOURCE1_RGB                                 0x8581
+#define LOCAL_GL_SOURCE1_RGB_ARB                             0x8581
+#define LOCAL_GL_SOURCE1_RGB_EXT                             0x8581
+#define LOCAL_GL_SOURCE2_ALPHA                               0x858A
+#define LOCAL_GL_SOURCE2_ALPHA_ARB                           0x858A
+#define LOCAL_GL_SOURCE2_ALPHA_EXT                           0x858A
+#define LOCAL_GL_SOURCE2_RGB                                 0x8582
+#define LOCAL_GL_SOURCE2_RGB_ARB                             0x8582
+#define LOCAL_GL_SOURCE2_RGB_EXT                             0x8582
+#define LOCAL_GL_SOURCE3_ALPHA_NV                            0x858B
+#define LOCAL_GL_SOURCE3_RGB_NV                              0x8583
+#define LOCAL_GL_SPARE0_NV                                   0x852E
+#define LOCAL_GL_SPARE0_PLUS_SECONDARY_COLOR_NV              0x8532
+#define LOCAL_GL_SPARE1_NV                                   0x852F
+#define LOCAL_GL_SPARSE_BUFFER_PAGE_SIZE_ARB                 0x82F8
+#define LOCAL_GL_SPARSE_STORAGE_BIT_ARB                      0x0400
+#define LOCAL_GL_SPARSE_TEXTURE_FULL_ARRAY_CUBE_MIPMAPS_ARB  0x91A9
+#define LOCAL_GL_SPARSE_TEXTURE_FULL_ARRAY_CUBE_MIPMAPS_EXT  0x91A9
+#define LOCAL_GL_SPECULAR                                    0x1202
+#define LOCAL_GL_SPHERE_MAP                                  0x2402
+#define LOCAL_GL_SPIR_V_BINARY                               0x9552
+#define LOCAL_GL_SPIR_V_BINARY_ARB                           0x9552
+#define LOCAL_GL_SPIR_V_EXTENSIONS                           0x9553
+#define LOCAL_GL_SPOT_CUTOFF                                 0x1206
+#define LOCAL_GL_SPOT_DIRECTION                              0x1204
+#define LOCAL_GL_SPOT_EXPONENT                               0x1205
+#define LOCAL_GL_SPRITE_AXIAL_SGIX                           0x814C
+#define LOCAL_GL_SPRITE_AXIS_SGIX                            0x814A
+#define LOCAL_GL_SPRITE_EYE_ALIGNED_SGIX                     0x814E
+#define LOCAL_GL_SPRITE_MODE_SGIX                            0x8149
+#define LOCAL_GL_SPRITE_OBJECT_ALIGNED_SGIX                  0x814D
+#define LOCAL_GL_SPRITE_SGIX                                 0x8148
+#define LOCAL_GL_SPRITE_TRANSLATION_SGIX                     0x814B
+#define LOCAL_GL_SQUARE_NV                                   0x90A3
+#define LOCAL_GL_SR8_EXT                                     0x8FBD
+#define LOCAL_GL_SRC0_ALPHA                                  0x8588
+#define LOCAL_GL_SRC0_RGB                                    0x8580
+#define LOCAL_GL_SRC1_ALPHA                                  0x8589
+#define LOCAL_GL_SRC1_ALPHA_EXT                              0x8589
+#define LOCAL_GL_SRC1_COLOR                                  0x88F9
+#define LOCAL_GL_SRC1_COLOR_EXT                              0x88F9
+#define LOCAL_GL_SRC1_RGB                                    0x8581
+#define LOCAL_GL_SRC2_ALPHA                                  0x858A
+#define LOCAL_GL_SRC2_RGB                                    0x8582
+#define LOCAL_GL_SRC_ALPHA                                   0x0302
+#define LOCAL_GL_SRC_ALPHA_SATURATE                          0x0308
+#define LOCAL_GL_SRC_ALPHA_SATURATE_EXT                      0x0308
+#define LOCAL_GL_SRC_ATOP_NV                                 0x928E
+#define LOCAL_GL_SRC_COLOR                                   0x0300
+#define LOCAL_GL_SRC_IN_NV                                   0x928A
+#define LOCAL_GL_SRC_NV                                      0x9286
+#define LOCAL_GL_SRC_OUT_NV                                  0x928C
+#define LOCAL_GL_SRC_OVER_NV                                 0x9288
+#define LOCAL_GL_SRG8_EXT                                    0x8FBE
+#define LOCAL_GL_SRGB                                        0x8C40
+#define LOCAL_GL_SRGB8                                       0x8C41
+#define LOCAL_GL_SRGB8_ALPHA8                                0x8C43
+#define LOCAL_GL_SRGB8_ALPHA8_EXT                            0x8C43
+#define LOCAL_GL_SRGB8_EXT                                   0x8C41
+#define LOCAL_GL_SRGB8_NV                                    0x8C41
+#define LOCAL_GL_SRGB_ALPHA                                  0x8C42
+#define LOCAL_GL_SRGB_ALPHA_EXT                              0x8C42
+#define LOCAL_GL_SRGB_DECODE_ARB                             0x8299
+#define LOCAL_GL_SRGB_EXT                                    0x8C40
+#define LOCAL_GL_SRGB_READ                                   0x8297
+#define LOCAL_GL_SRGB_WRITE                                  0x8298
+#define LOCAL_GL_STACK_OVERFLOW                              0x0503
+#define LOCAL_GL_STACK_OVERFLOW_KHR                          0x0503
+#define LOCAL_GL_STACK_UNDERFLOW                             0x0504
+#define LOCAL_GL_STACK_UNDERFLOW_KHR                         0x0504
+#define LOCAL_GL_STANDARD_FONT_FORMAT_NV                     0x936C
+#define LOCAL_GL_STANDARD_FONT_NAME_NV                       0x9072
+#define LOCAL_GL_STATE_RESTORE                               0x8BDC
+#define LOCAL_GL_STATIC_ATI                                  0x8760
+#define LOCAL_GL_STATIC_COPY                                 0x88E6
+#define LOCAL_GL_STATIC_COPY_ARB                             0x88E6
+#define LOCAL_GL_STATIC_DRAW                                 0x88E4
+#define LOCAL_GL_STATIC_DRAW_ARB                             0x88E4
+#define LOCAL_GL_STATIC_READ                                 0x88E5
+#define LOCAL_GL_STATIC_READ_ARB                             0x88E5
+#define LOCAL_GL_STATIC_VERTEX_ARRAY_IBM                     103061
+#define LOCAL_GL_STENCIL                                     0x1802
+#define LOCAL_GL_STENCIL_ATTACHMENT                          0x8D20
+#define LOCAL_GL_STENCIL_ATTACHMENT_EXT                      0x8D20
+#define LOCAL_GL_STENCIL_ATTACHMENT_OES                      0x8D20
+#define LOCAL_GL_STENCIL_BACK_FAIL                           0x8801
+#define LOCAL_GL_STENCIL_BACK_FAIL_ATI                       0x8801
+#define LOCAL_GL_STENCIL_BACK_FUNC                           0x8800
+#define LOCAL_GL_STENCIL_BACK_FUNC_ATI                       0x8800
+#define LOCAL_GL_STENCIL_BACK_OP_VALUE_AMD                   0x874D
+#define LOCAL_GL_STENCIL_BACK_PASS_DEPTH_FAIL                0x8802
+#define LOCAL_GL_STENCIL_BACK_PASS_DEPTH_FAIL_ATI            0x8802
+#define LOCAL_GL_STENCIL_BACK_PASS_DEPTH_PASS                0x8803
+#define LOCAL_GL_STENCIL_BACK_PASS_DEPTH_PASS_ATI            0x8803
+#define LOCAL_GL_STENCIL_BACK_REF                            0x8CA3
+#define LOCAL_GL_STENCIL_BACK_VALUE_MASK                     0x8CA4
+#define LOCAL_GL_STENCIL_BACK_WRITEMASK                      0x8CA5
+#define LOCAL_GL_STENCIL_BITS                                0x0D57
+#define LOCAL_GL_STENCIL_BUFFER_BIT                          0x00000400
+#define LOCAL_GL_STENCIL_BUFFER_BIT0_QCOM                    0x00010000
+#define LOCAL_GL_STENCIL_BUFFER_BIT1_QCOM                    0x00020000
+#define LOCAL_GL_STENCIL_BUFFER_BIT2_QCOM                    0x00040000
+#define LOCAL_GL_STENCIL_BUFFER_BIT3_QCOM                    0x00080000
+#define LOCAL_GL_STENCIL_BUFFER_BIT4_QCOM                    0x00100000
+#define LOCAL_GL_STENCIL_BUFFER_BIT5_QCOM                    0x00200000
+#define LOCAL_GL_STENCIL_BUFFER_BIT6_QCOM                    0x00400000
+#define LOCAL_GL_STENCIL_BUFFER_BIT7_QCOM                    0x00800000
+#define LOCAL_GL_STENCIL_CLEAR_TAG_VALUE_EXT                 0x88F3
+#define LOCAL_GL_STENCIL_CLEAR_VALUE                         0x0B91
+#define LOCAL_GL_STENCIL_COMPONENTS                          0x8285
+#define LOCAL_GL_STENCIL_EXT                                 0x1802
+#define LOCAL_GL_STENCIL_FAIL                                0x0B94
+#define LOCAL_GL_STENCIL_FUNC                                0x0B92
+#define LOCAL_GL_STENCIL_INDEX                               0x1901
+#define LOCAL_GL_STENCIL_INDEX1                              0x8D46
+#define LOCAL_GL_STENCIL_INDEX16                             0x8D49
+#define LOCAL_GL_STENCIL_INDEX16_EXT                         0x8D49
+#define LOCAL_GL_STENCIL_INDEX1_EXT                          0x8D46
+#define LOCAL_GL_STENCIL_INDEX1_OES                          0x8D46
+#define LOCAL_GL_STENCIL_INDEX4                              0x8D47
+#define LOCAL_GL_STENCIL_INDEX4_EXT                          0x8D47
+#define LOCAL_GL_STENCIL_INDEX4_OES                          0x8D47
+#define LOCAL_GL_STENCIL_INDEX8                              0x8D48
+#define LOCAL_GL_STENCIL_INDEX8_EXT                          0x8D48
+#define LOCAL_GL_STENCIL_INDEX8_OES                          0x8D48
+#define LOCAL_GL_STENCIL_INDEX_OES                           0x1901
+#define LOCAL_GL_STENCIL_OP_VALUE_AMD                        0x874C
+#define LOCAL_GL_STENCIL_PASS_DEPTH_FAIL                     0x0B95
+#define LOCAL_GL_STENCIL_PASS_DEPTH_PASS                     0x0B96
+#define LOCAL_GL_STENCIL_REF                                 0x0B97
+#define LOCAL_GL_STENCIL_REF_COMMAND_NV                      0x000C
+#define LOCAL_GL_STENCIL_RENDERABLE                          0x8288
+#define LOCAL_GL_STENCIL_SAMPLES_NV                          0x932E
+#define LOCAL_GL_STENCIL_TAG_BITS_EXT                        0x88F2
+#define LOCAL_GL_STENCIL_TEST                                0x0B90
+#define LOCAL_GL_STENCIL_TEST_TWO_SIDE_EXT                   0x8910
+#define LOCAL_GL_STENCIL_VALUE_MASK                          0x0B93
+#define LOCAL_GL_STENCIL_WRITEMASK                           0x0B98
+#define LOCAL_GL_STEREO                                      0x0C33
+#define LOCAL_GL_STORAGE_CACHED_APPLE                        0x85BE
+#define LOCAL_GL_STORAGE_CLIENT_APPLE                        0x85B4
+#define LOCAL_GL_STORAGE_PRIVATE_APPLE                       0x85BD
+#define LOCAL_GL_STORAGE_SHARED_APPLE                        0x85BF
+#define LOCAL_GL_STREAM_COPY                                 0x88E2
+#define LOCAL_GL_STREAM_COPY_ARB                             0x88E2
+#define LOCAL_GL_STREAM_DRAW                                 0x88E0
+#define LOCAL_GL_STREAM_DRAW_ARB                             0x88E0
+#define LOCAL_GL_STREAM_RASTERIZATION_AMD                    0x91A0
+#define LOCAL_GL_STREAM_READ                                 0x88E1
+#define LOCAL_GL_STREAM_READ_ARB                             0x88E1
+#define LOCAL_GL_STRICT_DEPTHFUNC_HINT_PGI                   0x1A216
+#define LOCAL_GL_STRICT_LIGHTING_HINT_PGI                    0x1A217
+#define LOCAL_GL_STRICT_SCISSOR_HINT_PGI                     0x1A218
+#define LOCAL_GL_SUBGROUP_FEATURE_ARITHMETIC_BIT_KHR         0x00000004
+#define LOCAL_GL_SUBGROUP_FEATURE_BALLOT_BIT_KHR             0x00000008
+#define LOCAL_GL_SUBGROUP_FEATURE_BASIC_BIT_KHR              0x00000001
+#define LOCAL_GL_SUBGROUP_FEATURE_CLUSTERED_BIT_KHR          0x00000040
+#define LOCAL_GL_SUBGROUP_FEATURE_PARTITIONED_BIT_NV         0x00000100
+#define LOCAL_GL_SUBGROUP_FEATURE_QUAD_BIT_KHR               0x00000080
+#define LOCAL_GL_SUBGROUP_FEATURE_SHUFFLE_BIT_KHR            0x00000010
+#define LOCAL_GL_SUBGROUP_FEATURE_SHUFFLE_RELATIVE_BIT_KHR   0x00000020
+#define LOCAL_GL_SUBGROUP_FEATURE_VOTE_BIT_KHR               0x00000002
+#define LOCAL_GL_SUBGROUP_QUAD_ALL_STAGES_KHR                0x9535
+#define LOCAL_GL_SUBGROUP_SIZE_KHR                           0x9532
+#define LOCAL_GL_SUBGROUP_SUPPORTED_FEATURES_KHR             0x9534
+#define LOCAL_GL_SUBGROUP_SUPPORTED_STAGES_KHR               0x9533
+#define LOCAL_GL_SUBPIXEL_BITS                               0x0D50
+#define LOCAL_GL_SUBPIXEL_PRECISION_BIAS_X_BITS_NV           0x9347
+#define LOCAL_GL_SUBPIXEL_PRECISION_BIAS_Y_BITS_NV           0x9348
+#define LOCAL_GL_SUBSAMPLE_DISTANCE_AMD                      0x883F
+#define LOCAL_GL_SUBTRACT                                    0x84E7
+#define LOCAL_GL_SUBTRACT_ARB                                0x84E7
+#define LOCAL_GL_SUB_ATI                                     0x8965
+#define LOCAL_GL_SUCCESS_NV                                  0x902F
+#define LOCAL_GL_SUPERSAMPLE_SCALE_X_NV                      0x9372
+#define LOCAL_GL_SUPERSAMPLE_SCALE_Y_NV                      0x9373
+#define LOCAL_GL_SUPPORTED_MULTISAMPLE_MODES_AMD             0x91B7
+#define LOCAL_GL_SURFACE_MAPPED_NV                           0x8700
+#define LOCAL_GL_SURFACE_REGISTERED_NV                       0x86FD
+#define LOCAL_GL_SURFACE_STATE_NV                            0x86EB
+#define LOCAL_GL_SWIZZLE_STQ_ATI                             0x8977
+#define LOCAL_GL_SWIZZLE_STQ_DQ_ATI                          0x8979
+#define LOCAL_GL_SWIZZLE_STRQ_ATI                            0x897A
+#define LOCAL_GL_SWIZZLE_STRQ_DQ_ATI                         0x897B
+#define LOCAL_GL_SWIZZLE_STR_ATI                             0x8976
+#define LOCAL_GL_SWIZZLE_STR_DR_ATI                          0x8978
+#define LOCAL_GL_SYNC_CL_EVENT_ARB                           0x8240
+#define LOCAL_GL_SYNC_CL_EVENT_COMPLETE_ARB                  0x8241
+#define LOCAL_GL_SYNC_CONDITION                              0x9113
+#define LOCAL_GL_SYNC_CONDITION_APPLE                        0x9113
+#define LOCAL_GL_SYNC_FENCE                                  0x9116
+#define LOCAL_GL_SYNC_FENCE_APPLE                            0x9116
+#define LOCAL_GL_SYNC_FLAGS                                  0x9115
+#define LOCAL_GL_SYNC_FLAGS_APPLE                            0x9115
+#define LOCAL_GL_SYNC_FLUSH_COMMANDS_BIT                     0x00000001
+#define LOCAL_GL_SYNC_FLUSH_COMMANDS_BIT_APPLE               0x00000001
+#define LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE                  0x9117
+#define LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE_APPLE            0x9117
+#define LOCAL_GL_SYNC_OBJECT_APPLE                           0x8A53
+#define LOCAL_GL_SYNC_STATUS                                 0x9114
+#define LOCAL_GL_SYNC_STATUS_APPLE                           0x9114
+#define LOCAL_GL_SYNC_X11_FENCE_EXT                          0x90E1
+#define LOCAL_GL_SYSTEM_FONT_NAME_NV                         0x9073
+#define LOCAL_GL_T                                           0x2001
+#define LOCAL_GL_T2F_C3F_V3F                                 0x2A2A
+#define LOCAL_GL_T2F_C4F_N3F_V3F                             0x2A2C
+#define LOCAL_GL_T2F_C4UB_V3F                                0x2A29
+#define LOCAL_GL_T2F_IUI_N3F_V2F_EXT                         0x81B3
+#define LOCAL_GL_T2F_IUI_N3F_V3F_EXT                         0x81B4
+#define LOCAL_GL_T2F_IUI_V2F_EXT                             0x81B1
+#define LOCAL_GL_T2F_IUI_V3F_EXT                             0x81B2
+#define LOCAL_GL_T2F_N3F_V3F                                 0x2A2B
+#define LOCAL_GL_T2F_V3F                                     0x2A27
+#define LOCAL_GL_T4F_C4F_N3F_V4F                             0x2A2D
+#define LOCAL_GL_T4F_V4F                                     0x2A28
+#define LOCAL_GL_TABLE_TOO_LARGE                             0x8031
+#define LOCAL_GL_TABLE_TOO_LARGE_EXT                         0x8031
+#define LOCAL_GL_TANGENT_ARRAY_EXT                           0x8439
+#define LOCAL_GL_TANGENT_ARRAY_POINTER_EXT                   0x8442
+#define LOCAL_GL_TANGENT_ARRAY_STRIDE_EXT                    0x843F
+#define LOCAL_GL_TANGENT_ARRAY_TYPE_EXT                      0x843E
+#define LOCAL_GL_TASK_SHADER_BIT_NV                          0x00000080
+#define LOCAL_GL_TASK_SHADER_NV                              0x955A
+#define LOCAL_GL_TASK_SUBROUTINE_NV                          0x957D
+#define LOCAL_GL_TASK_SUBROUTINE_UNIFORM_NV                  0x957F
+#define LOCAL_GL_TASK_WORK_GROUP_SIZE_NV                     0x953F
+#define LOCAL_GL_TERMINATE_SEQUENCE_COMMAND_NV               0x0000
+#define LOCAL_GL_TESSELLATION_FACTOR_AMD                     0x9005
+#define LOCAL_GL_TESSELLATION_MODE_AMD                       0x9004
+#define LOCAL_GL_TESS_CONTROL_OUTPUT_VERTICES                0x8E75
+#define LOCAL_GL_TESS_CONTROL_OUTPUT_VERTICES_EXT            0x8E75
+#define LOCAL_GL_TESS_CONTROL_OUTPUT_VERTICES_OES            0x8E75
+#define LOCAL_GL_TESS_CONTROL_PROGRAM_NV                     0x891E
+#define LOCAL_GL_TESS_CONTROL_PROGRAM_PARAMETER_BUFFER_NV    0x8C74
+#define LOCAL_GL_TESS_CONTROL_SHADER                         0x8E88
+#define LOCAL_GL_TESS_CONTROL_SHADER_BIT                     0x00000008
+#define LOCAL_GL_TESS_CONTROL_SHADER_BIT_EXT                 0x00000008
+#define LOCAL_GL_TESS_CONTROL_SHADER_BIT_OES                 0x00000008
+#define LOCAL_GL_TESS_CONTROL_SHADER_EXT                     0x8E88
+#define LOCAL_GL_TESS_CONTROL_SHADER_OES                     0x8E88
+#define LOCAL_GL_TESS_CONTROL_SHADER_PATCHES                 0x82F1
+#define LOCAL_GL_TESS_CONTROL_SHADER_PATCHES_ARB             0x82F1
+#define LOCAL_GL_TESS_CONTROL_SUBROUTINE                     0x92E9
+#define LOCAL_GL_TESS_CONTROL_SUBROUTINE_UNIFORM             0x92EF
+#define LOCAL_GL_TESS_CONTROL_TEXTURE                        0x829C
+#define LOCAL_GL_TESS_EVALUATION_PROGRAM_NV                  0x891F
+#define LOCAL_GL_TESS_EVALUATION_PROGRAM_PARAMETER_BUFFER_NV 0x8C75
+#define LOCAL_GL_TESS_EVALUATION_SHADER                      0x8E87
+#define LOCAL_GL_TESS_EVALUATION_SHADER_BIT                  0x00000010
+#define LOCAL_GL_TESS_EVALUATION_SHADER_BIT_EXT              0x00000010
+#define LOCAL_GL_TESS_EVALUATION_SHADER_BIT_OES              0x00000010
+#define LOCAL_GL_TESS_EVALUATION_SHADER_EXT                  0x8E87
+#define LOCAL_GL_TESS_EVALUATION_SHADER_INVOCATIONS          0x82F2
+#define LOCAL_GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB      0x82F2
+#define LOCAL_GL_TESS_EVALUATION_SHADER_OES                  0x8E87
+#define LOCAL_GL_TESS_EVALUATION_SUBROUTINE                  0x92EA
+#define LOCAL_GL_TESS_EVALUATION_SUBROUTINE_UNIFORM          0x92F0
+#define LOCAL_GL_TESS_EVALUATION_TEXTURE                     0x829D
+#define LOCAL_GL_TESS_GEN_MODE                               0x8E76
+#define LOCAL_GL_TESS_GEN_MODE_EXT                           0x8E76
+#define LOCAL_GL_TESS_GEN_MODE_OES                           0x8E76
+#define LOCAL_GL_TESS_GEN_POINT_MODE                         0x8E79
+#define LOCAL_GL_TESS_GEN_POINT_MODE_EXT                     0x8E79
+#define LOCAL_GL_TESS_GEN_POINT_MODE_OES                     0x8E79
+#define LOCAL_GL_TESS_GEN_SPACING                            0x8E77
+#define LOCAL_GL_TESS_GEN_SPACING_EXT                        0x8E77
+#define LOCAL_GL_TESS_GEN_SPACING_OES                        0x8E77
+#define LOCAL_GL_TESS_GEN_VERTEX_ORDER                       0x8E78
+#define LOCAL_GL_TESS_GEN_VERTEX_ORDER_EXT                   0x8E78
+#define LOCAL_GL_TESS_GEN_VERTEX_ORDER_OES                   0x8E78
+#define LOCAL_GL_TEXCOORD1_BIT_PGI                           0x10000000
+#define LOCAL_GL_TEXCOORD2_BIT_PGI                           0x20000000
+#define LOCAL_GL_TEXCOORD3_BIT_PGI                           0x40000000
+#define LOCAL_GL_TEXCOORD4_BIT_PGI                           0x80000000
+#define LOCAL_GL_TEXTURE                                     0x1702
+#define LOCAL_GL_TEXTURE0                                    0x84C0
+#define LOCAL_GL_TEXTURE0_ARB                                0x84C0
+#define LOCAL_GL_TEXTURE1                                    0x84C1
+#define LOCAL_GL_TEXTURE10                                   0x84CA
+#define LOCAL_GL_TEXTURE10_ARB                               0x84CA
+#define LOCAL_GL_TEXTURE11                                   0x84CB
+#define LOCAL_GL_TEXTURE11_ARB                               0x84CB
+#define LOCAL_GL_TEXTURE12                                   0x84CC
+#define LOCAL_GL_TEXTURE12_ARB                               0x84CC
+#define LOCAL_GL_TEXTURE13                                   0x84CD
+#define LOCAL_GL_TEXTURE13_ARB                               0x84CD
+#define LOCAL_GL_TEXTURE14                                   0x84CE
+#define LOCAL_GL_TEXTURE14_ARB                               0x84CE
+#define LOCAL_GL_TEXTURE15                                   0x84CF
+#define LOCAL_GL_TEXTURE15_ARB                               0x84CF
+#define LOCAL_GL_TEXTURE16                                   0x84D0
+#define LOCAL_GL_TEXTURE16_ARB                               0x84D0
+#define LOCAL_GL_TEXTURE17                                   0x84D1
+#define LOCAL_GL_TEXTURE17_ARB                               0x84D1
+#define LOCAL_GL_TEXTURE18                                   0x84D2
+#define LOCAL_GL_TEXTURE18_ARB                               0x84D2
+#define LOCAL_GL_TEXTURE19                                   0x84D3
+#define LOCAL_GL_TEXTURE19_ARB                               0x84D3
+#define LOCAL_GL_TEXTURE1_ARB                                0x84C1
+#define LOCAL_GL_TEXTURE2                                    0x84C2
+#define LOCAL_GL_TEXTURE20                                   0x84D4
+#define LOCAL_GL_TEXTURE20_ARB                               0x84D4
+#define LOCAL_GL_TEXTURE21                                   0x84D5
+#define LOCAL_GL_TEXTURE21_ARB                               0x84D5
+#define LOCAL_GL_TEXTURE22                                   0x84D6
+#define LOCAL_GL_TEXTURE22_ARB                               0x84D6
+#define LOCAL_GL_TEXTURE23                                   0x84D7
+#define LOCAL_GL_TEXTURE23_ARB                               0x84D7
+#define LOCAL_GL_TEXTURE24                                   0x84D8
+#define LOCAL_GL_TEXTURE24_ARB                               0x84D8
+#define LOCAL_GL_TEXTURE25                                   0x84D9
+#define LOCAL_GL_TEXTURE25_ARB                               0x84D9
+#define LOCAL_GL_TEXTURE26                                   0x84DA
+#define LOCAL_GL_TEXTURE26_ARB                               0x84DA
+#define LOCAL_GL_TEXTURE27                                   0x84DB
+#define LOCAL_GL_TEXTURE27_ARB                               0x84DB
+#define LOCAL_GL_TEXTURE28                                   0x84DC
+#define LOCAL_GL_TEXTURE28_ARB                               0x84DC
+#define LOCAL_GL_TEXTURE29                                   0x84DD
+#define LOCAL_GL_TEXTURE29_ARB                               0x84DD
+#define LOCAL_GL_TEXTURE2_ARB                                0x84C2
+#define LOCAL_GL_TEXTURE3                                    0x84C3
+#define LOCAL_GL_TEXTURE30                                   0x84DE
+#define LOCAL_GL_TEXTURE30_ARB                               0x84DE
+#define LOCAL_GL_TEXTURE31                                   0x84DF
+#define LOCAL_GL_TEXTURE31_ARB                               0x84DF
+#define LOCAL_GL_TEXTURE3_ARB                                0x84C3
+#define LOCAL_GL_TEXTURE4                                    0x84C4
+#define LOCAL_GL_TEXTURE4_ARB                                0x84C4
+#define LOCAL_GL_TEXTURE5                                    0x84C5
+#define LOCAL_GL_TEXTURE5_ARB                                0x84C5
+#define LOCAL_GL_TEXTURE6                                    0x84C6
+#define LOCAL_GL_TEXTURE6_ARB                                0x84C6
+#define LOCAL_GL_TEXTURE7                                    0x84C7
+#define LOCAL_GL_TEXTURE7_ARB                                0x84C7
+#define LOCAL_GL_TEXTURE8                                    0x84C8
+#define LOCAL_GL_TEXTURE8_ARB                                0x84C8
+#define LOCAL_GL_TEXTURE9                                    0x84C9
+#define LOCAL_GL_TEXTURE9_ARB                                0x84C9
+#define LOCAL_GL_TEXTURE_1D                                  0x0DE0
+#define LOCAL_GL_TEXTURE_1D_ARRAY                            0x8C18
+#define LOCAL_GL_TEXTURE_1D_ARRAY_EXT                        0x8C18
+#define LOCAL_GL_TEXTURE_1D_BINDING_EXT                      0x8068
+#define LOCAL_GL_TEXTURE_1D_STACK_BINDING_MESAX              0x875D
+#define LOCAL_GL_TEXTURE_1D_STACK_MESAX                      0x8759
+#define LOCAL_GL_TEXTURE_2D                                  0x0DE1
+#define LOCAL_GL_TEXTURE_2D_ARRAY                            0x8C1A
+#define LOCAL_GL_TEXTURE_2D_ARRAY_EXT                        0x8C1A
+#define LOCAL_GL_TEXTURE_2D_BINDING_EXT                      0x8069
+#define LOCAL_GL_TEXTURE_2D_MULTISAMPLE                      0x9100
+#define LOCAL_GL_TEXTURE_2D_MULTISAMPLE_ARRAY                0x9102
+#define LOCAL_GL_TEXTURE_2D_MULTISAMPLE_ARRAY_OES            0x9102
+#define LOCAL_GL_TEXTURE_2D_STACK_BINDING_MESAX              0x875E
+#define LOCAL_GL_TEXTURE_2D_STACK_MESAX                      0x875A
+#define LOCAL_GL_TEXTURE_3D                                  0x806F
+#define LOCAL_GL_TEXTURE_3D_BINDING_EXT                      0x806A
+#define LOCAL_GL_TEXTURE_3D_BINDING_OES                      0x806A
+#define LOCAL_GL_TEXTURE_3D_EXT                              0x806F
+#define LOCAL_GL_TEXTURE_3D_OES                              0x806F
+#define LOCAL_GL_TEXTURE_4DSIZE_SGIS                         0x8136
+#define LOCAL_GL_TEXTURE_4D_BINDING_SGIS                     0x814F
+#define LOCAL_GL_TEXTURE_4D_SGIS                             0x8134
+#define LOCAL_GL_TEXTURE_ALPHA_MODULATE_IMG                  0x8C06
+#define LOCAL_GL_TEXTURE_ALPHA_SIZE                          0x805F
+#define LOCAL_GL_TEXTURE_ALPHA_SIZE_EXT                      0x805F
+#define LOCAL_GL_TEXTURE_ALPHA_TYPE                          0x8C13
+#define LOCAL_GL_TEXTURE_ALPHA_TYPE_ARB                      0x8C13
+#define LOCAL_GL_TEXTURE_APPLICATION_MODE_EXT                0x834F
+#define LOCAL_GL_TEXTURE_ASTC_DECODE_PRECISION_EXT           0x8F69
+#define LOCAL_GL_TEXTURE_BASE_LEVEL                          0x813C
+#define LOCAL_GL_TEXTURE_BASE_LEVEL_SGIS                     0x813C
+#define LOCAL_GL_TEXTURE_BINDING_1D                          0x8068
+#define LOCAL_GL_TEXTURE_BINDING_1D_ARRAY                    0x8C1C
+#define LOCAL_GL_TEXTURE_BINDING_1D_ARRAY_EXT                0x8C1C
+#define LOCAL_GL_TEXTURE_BINDING_2D                          0x8069
+#define LOCAL_GL_TEXTURE_BINDING_2D_ARRAY                    0x8C1D
+#define LOCAL_GL_TEXTURE_BINDING_2D_ARRAY_EXT                0x8C1D
+#define LOCAL_GL_TEXTURE_BINDING_2D_MULTISAMPLE              0x9104
+#define LOCAL_GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY        0x9105
+#define LOCAL_GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY_OES    0x9105
+#define LOCAL_GL_TEXTURE_BINDING_3D                          0x806A
+#define LOCAL_GL_TEXTURE_BINDING_3D_OES                      0x806A
+#define LOCAL_GL_TEXTURE_BINDING_BUFFER                      0x8C2C
+#define LOCAL_GL_TEXTURE_BINDING_BUFFER_ARB                  0x8C2C
+#define LOCAL_GL_TEXTURE_BINDING_BUFFER_EXT                  0x8C2C
+#define LOCAL_GL_TEXTURE_BINDING_BUFFER_OES                  0x8C2C
+#define LOCAL_GL_TEXTURE_BINDING_CUBE_MAP                    0x8514
+#define LOCAL_GL_TEXTURE_BINDING_CUBE_MAP_ARB                0x8514
+#define LOCAL_GL_TEXTURE_BINDING_CUBE_MAP_ARRAY              0x900A
+#define LOCAL_GL_TEXTURE_BINDING_CUBE_MAP_ARRAY_ARB          0x900A
+#define LOCAL_GL_TEXTURE_BINDING_CUBE_MAP_ARRAY_EXT          0x900A
+#define LOCAL_GL_TEXTURE_BINDING_CUBE_MAP_ARRAY_OES          0x900A
+#define LOCAL_GL_TEXTURE_BINDING_CUBE_MAP_EXT                0x8514
+#define LOCAL_GL_TEXTURE_BINDING_CUBE_MAP_OES                0x8514
+#define LOCAL_GL_TEXTURE_BINDING_EXTERNAL_OES                0x8D67
+#define LOCAL_GL_TEXTURE_BINDING_RECTANGLE                   0x84F6
+#define LOCAL_GL_TEXTURE_BINDING_RECTANGLE_ARB               0x84F6
+#define LOCAL_GL_TEXTURE_BINDING_RECTANGLE_NV                0x84F6
+#define LOCAL_GL_TEXTURE_BINDING_RENDERBUFFER_NV             0x8E53
+#define LOCAL_GL_TEXTURE_BIT                                 0x00040000
+#define LOCAL_GL_TEXTURE_BLUE_SIZE                           0x805E
+#define LOCAL_GL_TEXTURE_BLUE_SIZE_EXT                       0x805E
+#define LOCAL_GL_TEXTURE_BLUE_TYPE                           0x8C12
+#define LOCAL_GL_TEXTURE_BLUE_TYPE_ARB                       0x8C12
+#define LOCAL_GL_TEXTURE_BORDER                              0x1005
+#define LOCAL_GL_TEXTURE_BORDER_COLOR                        0x1004
+#define LOCAL_GL_TEXTURE_BORDER_COLOR_EXT                    0x1004
+#define LOCAL_GL_TEXTURE_BORDER_COLOR_NV                     0x1004
+#define LOCAL_GL_TEXTURE_BORDER_COLOR_OES                    0x1004
+#define LOCAL_GL_TEXTURE_BORDER_VALUES_NV                    0x871A
+#define LOCAL_GL_TEXTURE_BUFFER                              0x8C2A
+#define LOCAL_GL_TEXTURE_BUFFER_ARB                          0x8C2A
+#define LOCAL_GL_TEXTURE_BUFFER_BINDING                      0x8C2A
+#define LOCAL_GL_TEXTURE_BUFFER_BINDING_EXT                  0x8C2A
+#define LOCAL_GL_TEXTURE_BUFFER_BINDING_OES                  0x8C2A
+#define LOCAL_GL_TEXTURE_BUFFER_DATA_STORE_BINDING           0x8C2D
+#define LOCAL_GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB       0x8C2D
+#define LOCAL_GL_TEXTURE_BUFFER_DATA_STORE_BINDING_EXT       0x8C2D
+#define LOCAL_GL_TEXTURE_BUFFER_DATA_STORE_BINDING_OES       0x8C2D
+#define LOCAL_GL_TEXTURE_BUFFER_EXT                          0x8C2A
+#define LOCAL_GL_TEXTURE_BUFFER_FORMAT_ARB                   0x8C2E
+#define LOCAL_GL_TEXTURE_BUFFER_FORMAT_EXT                   0x8C2E
+#define LOCAL_GL_TEXTURE_BUFFER_OES                          0x8C2A
+#define LOCAL_GL_TEXTURE_BUFFER_OFFSET                       0x919D
+#define LOCAL_GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT             0x919F
+#define LOCAL_GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT_EXT         0x919F
+#define LOCAL_GL_TEXTURE_BUFFER_OFFSET_ALIGNMENT_OES         0x919F
+#define LOCAL_GL_TEXTURE_BUFFER_OFFSET_EXT                   0x919D
+#define LOCAL_GL_TEXTURE_BUFFER_OFFSET_OES                   0x919D
+#define LOCAL_GL_TEXTURE_BUFFER_SIZE                         0x919E
+#define LOCAL_GL_TEXTURE_BUFFER_SIZE_EXT                     0x919E
+#define LOCAL_GL_TEXTURE_BUFFER_SIZE_OES                     0x919E
+#define LOCAL_GL_TEXTURE_CLIPMAP_CENTER_SGIX                 0x8171
+#define LOCAL_GL_TEXTURE_CLIPMAP_DEPTH_SGIX                  0x8176
+#define LOCAL_GL_TEXTURE_CLIPMAP_FRAME_SGIX                  0x8172
+#define LOCAL_GL_TEXTURE_CLIPMAP_LOD_OFFSET_SGIX             0x8175
+#define LOCAL_GL_TEXTURE_CLIPMAP_OFFSET_SGIX                 0x8173
+#define LOCAL_GL_TEXTURE_CLIPMAP_VIRTUAL_DEPTH_SGIX          0x8174
+#define LOCAL_GL_TEXTURE_COLOR_SAMPLES_NV                    0x9046
+#define LOCAL_GL_TEXTURE_COLOR_TABLE_SGI                     0x80BC
+#define LOCAL_GL_TEXTURE_COLOR_WRITEMASK_SGIS                0x81EF
+#define LOCAL_GL_TEXTURE_COMPARE_FAIL_VALUE_ARB              0x80BF
+#define LOCAL_GL_TEXTURE_COMPARE_FUNC                        0x884D
+#define LOCAL_GL_TEXTURE_COMPARE_FUNC_ARB                    0x884D
+#define LOCAL_GL_TEXTURE_COMPARE_FUNC_EXT                    0x884D
+#define LOCAL_GL_TEXTURE_COMPARE_MODE                        0x884C
+#define LOCAL_GL_TEXTURE_COMPARE_MODE_ARB                    0x884C
+#define LOCAL_GL_TEXTURE_COMPARE_MODE_EXT                    0x884C
+#define LOCAL_GL_TEXTURE_COMPARE_OPERATOR_SGIX               0x819B
+#define LOCAL_GL_TEXTURE_COMPARE_SGIX                        0x819A
+#define LOCAL_GL_TEXTURE_COMPONENTS                          0x1003
+#define LOCAL_GL_TEXTURE_COMPRESSED                          0x86A1
+#define LOCAL_GL_TEXTURE_COMPRESSED_ARB                      0x86A1
+#define LOCAL_GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT             0x82B2
+#define LOCAL_GL_TEXTURE_COMPRESSED_BLOCK_SIZE               0x82B3
+#define LOCAL_GL_TEXTURE_COMPRESSED_BLOCK_WIDTH              0x82B1
+#define LOCAL_GL_TEXTURE_COMPRESSED_IMAGE_SIZE               0x86A0
+#define LOCAL_GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB           0x86A0
+#define LOCAL_GL_TEXTURE_COMPRESSION_HINT                    0x84EF
+#define LOCAL_GL_TEXTURE_COMPRESSION_HINT_ARB                0x84EF
+#define LOCAL_GL_TEXTURE_CONSTANT_DATA_SUNX                  0x81D6
+#define LOCAL_GL_TEXTURE_COORD_ARRAY                         0x8078
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_ADDRESS_NV              0x8F25
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING          0x889A
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB      0x889A
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_COUNT_EXT               0x808B
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_EXT                     0x8078
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_LENGTH_NV               0x8F2F
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_LIST_IBM                103074
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_LIST_STRIDE_IBM         103084
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_PARALLEL_POINTERS_INTEL 0x83F8
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_POINTER                 0x8092
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_POINTER_EXT             0x8092
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_SIZE                    0x8088
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_SIZE_EXT                0x8088
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_STRIDE                  0x808A
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_STRIDE_EXT              0x808A
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_TYPE                    0x8089
+#define LOCAL_GL_TEXTURE_COORD_ARRAY_TYPE_EXT                0x8089
+#define LOCAL_GL_TEXTURE_COORD_NV                            0x8C79
+#define LOCAL_GL_TEXTURE_COVERAGE_SAMPLES_NV                 0x9045
+#define LOCAL_GL_TEXTURE_CROP_RECT_OES                       0x8B9D
+#define LOCAL_GL_TEXTURE_CUBE_MAP                            0x8513
+#define LOCAL_GL_TEXTURE_CUBE_MAP_ARB                        0x8513
+#define LOCAL_GL_TEXTURE_CUBE_MAP_ARRAY                      0x9009
+#define LOCAL_GL_TEXTURE_CUBE_MAP_ARRAY_ARB                  0x9009
+#define LOCAL_GL_TEXTURE_CUBE_MAP_ARRAY_EXT                  0x9009
+#define LOCAL_GL_TEXTURE_CUBE_MAP_ARRAY_OES                  0x9009
+#define LOCAL_GL_TEXTURE_CUBE_MAP_EXT                        0x8513
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X                 0x8516
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB             0x8516
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_EXT             0x8516
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_OES             0x8516
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y                 0x8518
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB             0x8518
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_EXT             0x8518
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_OES             0x8518
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z                 0x851A
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB             0x851A
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_EXT             0x851A
+#define LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_OES             0x851A
+#define LOCAL_GL_TEXTURE_CUBE_MAP_OES                        0x8513
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X                 0x8515
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB             0x8515
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_EXT             0x8515
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_OES             0x8515
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y                 0x8517
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB             0x8517
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_EXT             0x8517
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_OES             0x8517
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z                 0x8519
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB             0x8519
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_EXT             0x8519
+#define LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_OES             0x8519
+#define LOCAL_GL_TEXTURE_CUBE_MAP_SEAMLESS                   0x884F
+#define LOCAL_GL_TEXTURE_DEFORMATION_BIT_SGIX                0x00000001
+#define LOCAL_GL_TEXTURE_DEFORMATION_SGIX                    0x8195
+#define LOCAL_GL_TEXTURE_DEPTH                               0x8071
+#define LOCAL_GL_TEXTURE_DEPTH_EXT                           0x8071
+#define LOCAL_GL_TEXTURE_DEPTH_QCOM                          0x8BD4
+#define LOCAL_GL_TEXTURE_DEPTH_SIZE                          0x884A
+#define LOCAL_GL_TEXTURE_DEPTH_SIZE_ARB                      0x884A
+#define LOCAL_GL_TEXTURE_DEPTH_TYPE                          0x8C16
+#define LOCAL_GL_TEXTURE_DEPTH_TYPE_ARB                      0x8C16
+#define LOCAL_GL_TEXTURE_DS_SIZE_NV                          0x871D
+#define LOCAL_GL_TEXTURE_DT_SIZE_NV                          0x871E
+#define LOCAL_GL_TEXTURE_ENV                                 0x2300
+#define LOCAL_GL_TEXTURE_ENV_BIAS_SGIX                       0x80BE
+#define LOCAL_GL_TEXTURE_ENV_COLOR                           0x2201
+#define LOCAL_GL_TEXTURE_ENV_MODE                            0x2200
+#define LOCAL_GL_TEXTURE_EXTERNAL_OES                        0x8D65
+#define LOCAL_GL_TEXTURE_FETCH_BARRIER_BIT                   0x00000008
+#define LOCAL_GL_TEXTURE_FETCH_BARRIER_BIT_EXT               0x00000008
+#define LOCAL_GL_TEXTURE_FILTER4_SIZE_SGIS                   0x8147
+#define LOCAL_GL_TEXTURE_FILTER_CONTROL                      0x8500
+#define LOCAL_GL_TEXTURE_FILTER_CONTROL_EXT                  0x8500
+#define LOCAL_GL_TEXTURE_FIXED_SAMPLE_LOCATIONS              0x9107
+#define LOCAL_GL_TEXTURE_FLOAT_COMPONENTS_NV                 0x888C
+#define LOCAL_GL_TEXTURE_FORMAT_QCOM                         0x8BD6
+#define LOCAL_GL_TEXTURE_FORMAT_SRGB_OVERRIDE_EXT            0x8FBF
+#define LOCAL_GL_TEXTURE_FOVEATED_CUTOFF_DENSITY_QCOM        0x96A0
+#define LOCAL_GL_TEXTURE_FOVEATED_FEATURE_BITS_QCOM          0x8BFB
+#define LOCAL_GL_TEXTURE_FOVEATED_FEATURE_QUERY_QCOM         0x8BFD
+#define LOCAL_GL_TEXTURE_FOVEATED_MIN_PIXEL_DENSITY_QCOM     0x8BFC
+#define LOCAL_GL_TEXTURE_FOVEATED_NUM_FOCAL_POINTS_QUERY_QCOM        0x8BFE
+#define LOCAL_GL_TEXTURE_FREE_MEMORY_ATI                     0x87FC
+#define LOCAL_GL_TEXTURE_GATHER                              0x82A2
+#define LOCAL_GL_TEXTURE_GATHER_SHADOW                       0x82A3
+#define LOCAL_GL_TEXTURE_GEN_MODE                            0x2500
+#define LOCAL_GL_TEXTURE_GEN_MODE_OES                        0x2500
+#define LOCAL_GL_TEXTURE_GEN_Q                               0x0C63
+#define LOCAL_GL_TEXTURE_GEN_R                               0x0C62
+#define LOCAL_GL_TEXTURE_GEN_S                               0x0C60
+#define LOCAL_GL_TEXTURE_GEN_STR_OES                         0x8D60
+#define LOCAL_GL_TEXTURE_GEN_T                               0x0C61
+#define LOCAL_GL_TEXTURE_GEQUAL_R_SGIX                       0x819D
+#define LOCAL_GL_TEXTURE_GREEN_SIZE                          0x805D
+#define LOCAL_GL_TEXTURE_GREEN_SIZE_EXT                      0x805D
+#define LOCAL_GL_TEXTURE_GREEN_TYPE                          0x8C11
+#define LOCAL_GL_TEXTURE_GREEN_TYPE_ARB                      0x8C11
+#define LOCAL_GL_TEXTURE_HEIGHT                              0x1001
+#define LOCAL_GL_TEXTURE_HEIGHT_QCOM                         0x8BD3
+#define LOCAL_GL_TEXTURE_HI_SIZE_NV                          0x871B
+#define LOCAL_GL_TEXTURE_IMAGE_FORMAT                        0x828F
+#define LOCAL_GL_TEXTURE_IMAGE_TYPE                          0x8290
+#define LOCAL_GL_TEXTURE_IMAGE_VALID_QCOM                    0x8BD8
+#define LOCAL_GL_TEXTURE_IMMUTABLE_FORMAT                    0x912F
+#define LOCAL_GL_TEXTURE_IMMUTABLE_FORMAT_EXT                0x912F
+#define LOCAL_GL_TEXTURE_IMMUTABLE_LEVELS                    0x82DF
+#define LOCAL_GL_TEXTURE_INDEX_SIZE_EXT                      0x80ED
+#define LOCAL_GL_TEXTURE_INTENSITY_SIZE                      0x8061
+#define LOCAL_GL_TEXTURE_INTENSITY_SIZE_EXT                  0x8061
+#define LOCAL_GL_TEXTURE_INTENSITY_TYPE                      0x8C15
+#define LOCAL_GL_TEXTURE_INTENSITY_TYPE_ARB                  0x8C15
+#define LOCAL_GL_TEXTURE_INTERNAL_FORMAT                     0x1003
+#define LOCAL_GL_TEXTURE_INTERNAL_FORMAT_QCOM                0x8BD5
+#define LOCAL_GL_TEXTURE_LEQUAL_R_SGIX                       0x819C
+#define LOCAL_GL_TEXTURE_LIGHTING_MODE_HP                    0x8167
+#define LOCAL_GL_TEXTURE_LIGHT_EXT                           0x8350
+#define LOCAL_GL_TEXTURE_LOD_BIAS                            0x8501
+#define LOCAL_GL_TEXTURE_LOD_BIAS_EXT                        0x8501
+#define LOCAL_GL_TEXTURE_LOD_BIAS_R_SGIX                     0x8190
+#define LOCAL_GL_TEXTURE_LOD_BIAS_S_SGIX                     0x818E
+#define LOCAL_GL_TEXTURE_LOD_BIAS_T_SGIX                     0x818F
+#define LOCAL_GL_TEXTURE_LO_SIZE_NV                          0x871C
+#define LOCAL_GL_TEXTURE_LUMINANCE_SIZE                      0x8060
+#define LOCAL_GL_TEXTURE_LUMINANCE_SIZE_EXT                  0x8060
+#define LOCAL_GL_TEXTURE_LUMINANCE_TYPE                      0x8C14
+#define LOCAL_GL_TEXTURE_LUMINANCE_TYPE_ARB                  0x8C14
+#define LOCAL_GL_TEXTURE_MAG_FILTER                          0x2800
+#define LOCAL_GL_TEXTURE_MAG_SIZE_NV                         0x871F
+#define LOCAL_GL_TEXTURE_MATERIAL_FACE_EXT                   0x8351
+#define LOCAL_GL_TEXTURE_MATERIAL_PARAMETER_EXT              0x8352
+#define LOCAL_GL_TEXTURE_MATRIX                              0x0BA8
+#define LOCAL_GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES        0x898F
+#define LOCAL_GL_TEXTURE_MAX_ANISOTROPY                      0x84FE
+#define LOCAL_GL_TEXTURE_MAX_ANISOTROPY_EXT                  0x84FE
+#define LOCAL_GL_TEXTURE_MAX_CLAMP_R_SGIX                    0x836B
+#define LOCAL_GL_TEXTURE_MAX_CLAMP_S_SGIX                    0x8369
+#define LOCAL_GL_TEXTURE_MAX_CLAMP_T_SGIX                    0x836A
+#define LOCAL_GL_TEXTURE_MAX_LEVEL                           0x813D
+#define LOCAL_GL_TEXTURE_MAX_LEVEL_APPLE                     0x813D
+#define LOCAL_GL_TEXTURE_MAX_LEVEL_SGIS                      0x813D
+#define LOCAL_GL_TEXTURE_MAX_LOD                             0x813B
+#define LOCAL_GL_TEXTURE_MAX_LOD_SGIS                        0x813B
+#define LOCAL_GL_TEXTURE_MEMORY_LAYOUT_INTEL                 0x83FF
+#define LOCAL_GL_TEXTURE_MIN_FILTER                          0x2801
+#define LOCAL_GL_TEXTURE_MIN_LOD                             0x813A
+#define LOCAL_GL_TEXTURE_MIN_LOD_SGIS                        0x813A
+#define LOCAL_GL_TEXTURE_MULTI_BUFFER_HINT_SGIX              0x812E
+#define LOCAL_GL_TEXTURE_NORMAL_EXT                          0x85AF
+#define LOCAL_GL_TEXTURE_NUM_LEVELS_QCOM                     0x8BD9
+#define LOCAL_GL_TEXTURE_OBJECT_VALID_QCOM                   0x8BDB
+#define LOCAL_GL_TEXTURE_POST_SPECULAR_HP                    0x8168
+#define LOCAL_GL_TEXTURE_PRE_SPECULAR_HP                     0x8169
+#define LOCAL_GL_TEXTURE_PRIORITY                            0x8066
+#define LOCAL_GL_TEXTURE_PRIORITY_EXT                        0x8066
+#define LOCAL_GL_TEXTURE_PROTECTED_EXT                       0x8BFA
+#define LOCAL_GL_TEXTURE_RANGE_LENGTH_APPLE                  0x85B7
+#define LOCAL_GL_TEXTURE_RANGE_POINTER_APPLE                 0x85B8
+#define LOCAL_GL_TEXTURE_RECTANGLE                           0x84F5
+#define LOCAL_GL_TEXTURE_RECTANGLE_ARB                       0x84F5
+#define LOCAL_GL_TEXTURE_RECTANGLE_NV                        0x84F5
+#define LOCAL_GL_TEXTURE_REDUCTION_MODE_ARB                  0x9366
+#define LOCAL_GL_TEXTURE_REDUCTION_MODE_EXT                  0x9366
+#define LOCAL_GL_TEXTURE_RED_SIZE                            0x805C
+#define LOCAL_GL_TEXTURE_RED_SIZE_EXT                        0x805C
+#define LOCAL_GL_TEXTURE_RED_TYPE                            0x8C10
+#define LOCAL_GL_TEXTURE_RED_TYPE_ARB                        0x8C10
+#define LOCAL_GL_TEXTURE_RENDERBUFFER_DATA_STORE_BINDING_NV  0x8E54
+#define LOCAL_GL_TEXTURE_RENDERBUFFER_NV                     0x8E55
+#define LOCAL_GL_TEXTURE_RESIDENT                            0x8067
+#define LOCAL_GL_TEXTURE_RESIDENT_EXT                        0x8067
+#define LOCAL_GL_TEXTURE_SAMPLES                             0x9106
+#define LOCAL_GL_TEXTURE_SAMPLES_IMG                         0x9136
+#define LOCAL_GL_TEXTURE_SHADER_NV                           0x86DE
+#define LOCAL_GL_TEXTURE_SHADOW                              0x82A1
+#define LOCAL_GL_TEXTURE_SHARED_SIZE                         0x8C3F
+#define LOCAL_GL_TEXTURE_SHARED_SIZE_EXT                     0x8C3F
+#define LOCAL_GL_TEXTURE_SPARSE_ARB                          0x91A6
+#define LOCAL_GL_TEXTURE_SPARSE_EXT                          0x91A6
+#define LOCAL_GL_TEXTURE_SRGB_DECODE_EXT                     0x8A48
+#define LOCAL_GL_TEXTURE_STACK_DEPTH                         0x0BA5
+#define LOCAL_GL_TEXTURE_STENCIL_SIZE                        0x88F1
+#define LOCAL_GL_TEXTURE_STENCIL_SIZE_EXT                    0x88F1
+#define LOCAL_GL_TEXTURE_STORAGE_HINT_APPLE                  0x85BC
+#define LOCAL_GL_TEXTURE_STORAGE_SPARSE_BIT_AMD              0x00000001
+#define LOCAL_GL_TEXTURE_SWIZZLE_A                           0x8E45
+#define LOCAL_GL_TEXTURE_SWIZZLE_A_EXT                       0x8E45
+#define LOCAL_GL_TEXTURE_SWIZZLE_B                           0x8E44
+#define LOCAL_GL_TEXTURE_SWIZZLE_B_EXT                       0x8E44
+#define LOCAL_GL_TEXTURE_SWIZZLE_G                           0x8E43
+#define LOCAL_GL_TEXTURE_SWIZZLE_G_EXT                       0x8E43
+#define LOCAL_GL_TEXTURE_SWIZZLE_R                           0x8E42
+#define LOCAL_GL_TEXTURE_SWIZZLE_RGBA                        0x8E46
+#define LOCAL_GL_TEXTURE_SWIZZLE_RGBA_EXT                    0x8E46
+#define LOCAL_GL_TEXTURE_SWIZZLE_R_EXT                       0x8E42
+#define LOCAL_GL_TEXTURE_TARGET                              0x1006
+#define LOCAL_GL_TEXTURE_TARGET_QCOM                         0x8BDA
+#define LOCAL_GL_TEXTURE_TILING_EXT                          0x9580
+#define LOCAL_GL_TEXTURE_TOO_LARGE_EXT                       0x8065
+#define LOCAL_GL_TEXTURE_TYPE_QCOM                           0x8BD7
+#define LOCAL_GL_TEXTURE_UNNORMALIZED_COORDINATES_ARM        0x8F6A
+#define LOCAL_GL_TEXTURE_UNSIGNED_REMAP_MODE_NV              0x888F
+#define LOCAL_GL_TEXTURE_UPDATE_BARRIER_BIT                  0x00000100
+#define LOCAL_GL_TEXTURE_UPDATE_BARRIER_BIT_EXT              0x00000100
+#define LOCAL_GL_TEXTURE_USAGE_ANGLE                         0x93A2
+#define LOCAL_GL_TEXTURE_VIEW                                0x82B5
+#define LOCAL_GL_TEXTURE_VIEW_MIN_LAYER                      0x82DD
+#define LOCAL_GL_TEXTURE_VIEW_MIN_LAYER_EXT                  0x82DD
+#define LOCAL_GL_TEXTURE_VIEW_MIN_LAYER_OES                  0x82DD
+#define LOCAL_GL_TEXTURE_VIEW_MIN_LEVEL                      0x82DB
+#define LOCAL_GL_TEXTURE_VIEW_MIN_LEVEL_EXT                  0x82DB
+#define LOCAL_GL_TEXTURE_VIEW_MIN_LEVEL_OES                  0x82DB
+#define LOCAL_GL_TEXTURE_VIEW_NUM_LAYERS                     0x82DE
+#define LOCAL_GL_TEXTURE_VIEW_NUM_LAYERS_EXT                 0x82DE
+#define LOCAL_GL_TEXTURE_VIEW_NUM_LAYERS_OES                 0x82DE
+#define LOCAL_GL_TEXTURE_VIEW_NUM_LEVELS                     0x82DC
+#define LOCAL_GL_TEXTURE_VIEW_NUM_LEVELS_EXT                 0x82DC
+#define LOCAL_GL_TEXTURE_VIEW_NUM_LEVELS_OES                 0x82DC
+#define LOCAL_GL_TEXTURE_WIDTH                               0x1000
+#define LOCAL_GL_TEXTURE_WIDTH_QCOM                          0x8BD2
+#define LOCAL_GL_TEXTURE_WRAP_Q_SGIS                         0x8137
+#define LOCAL_GL_TEXTURE_WRAP_R                              0x8072
+#define LOCAL_GL_TEXTURE_WRAP_R_EXT                          0x8072
+#define LOCAL_GL_TEXTURE_WRAP_R_OES                          0x8072
+#define LOCAL_GL_TEXTURE_WRAP_S                              0x2802
+#define LOCAL_GL_TEXTURE_WRAP_T                              0x2803
+#define LOCAL_GL_TEXT_FRAGMENT_SHADER_ATI                    0x8200
+#define LOCAL_GL_TILE_RASTER_ORDER_FIXED_MESA                0x8BB8
+#define LOCAL_GL_TILE_RASTER_ORDER_INCREASING_X_MESA         0x8BB9
+#define LOCAL_GL_TILE_RASTER_ORDER_INCREASING_Y_MESA         0x8BBA
+#define LOCAL_GL_TILING_TYPES_EXT                            0x9583
+#define LOCAL_GL_TIMELINE_SEMAPHORE_VALUE_NV                 0x9595
+#define LOCAL_GL_TIMEOUT_EXPIRED                             0x911B
+#define LOCAL_GL_TIMEOUT_EXPIRED_APPLE                       0x911B
+#define LOCAL_GL_TIMEOUT_IGNORED                             0xFFFFFFFFFFFFFFFF
+#define LOCAL_GL_TIMEOUT_IGNORED_APPLE                       0xFFFFFFFFFFFFFFFF
+#define LOCAL_GL_TIMESTAMP                                   0x8E28
+#define LOCAL_GL_TIMESTAMP_EXT                               0x8E28
+#define LOCAL_GL_TIME_ELAPSED                                0x88BF
+#define LOCAL_GL_TIME_ELAPSED_EXT                            0x88BF
+#define LOCAL_GL_TOP_LEVEL_ARRAY_SIZE                        0x930C
+#define LOCAL_GL_TOP_LEVEL_ARRAY_STRIDE                      0x930D
+#define LOCAL_GL_TRACE_ALL_BITS_MESA                         0xFFFF
+#define LOCAL_GL_TRACE_ARRAYS_BIT_MESA                       0x0004
+#define LOCAL_GL_TRACE_ERRORS_BIT_MESA                       0x0020
+#define LOCAL_GL_TRACE_MASK_MESA                             0x8755
+#define LOCAL_GL_TRACE_NAME_MESA                             0x8756
+#define LOCAL_GL_TRACE_OPERATIONS_BIT_MESA                   0x0001
+#define LOCAL_GL_TRACE_PIXELS_BIT_MESA                       0x0010
+#define LOCAL_GL_TRACE_PRIMITIVES_BIT_MESA                   0x0002
+#define LOCAL_GL_TRACE_TEXTURES_BIT_MESA                     0x0008
+#define LOCAL_GL_TRACK_MATRIX_NV                             0x8648
+#define LOCAL_GL_TRACK_MATRIX_TRANSFORM_NV                   0x8649
+#define LOCAL_GL_TRANSFORM_BIT                               0x00001000
+#define LOCAL_GL_TRANSFORM_FEEDBACK                          0x8E22
+#define LOCAL_GL_TRANSFORM_FEEDBACK_ACTIVE                   0x8E24
+#define LOCAL_GL_TRANSFORM_FEEDBACK_ATTRIBS_NV               0x8C7E
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BARRIER_BIT              0x00000800
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BARRIER_BIT_EXT          0x00000800
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BINDING                  0x8E25
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BINDING_NV               0x8E25
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER                   0x8C8E
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE            0x8E24
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE_NV         0x8E24
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_BINDING           0x8C8F
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_BINDING_EXT       0x8C8F
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_BINDING_NV        0x8C8F
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_EXT               0x8C8E
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_INDEX             0x934B
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_MODE              0x8C7F
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_MODE_EXT          0x8C7F
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_MODE_NV           0x8C7F
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_NV                0x8C8E
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED            0x8E23
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED_NV         0x8E23
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_SIZE              0x8C85
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_SIZE_EXT          0x8C85
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_SIZE_NV           0x8C85
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_START             0x8C84
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_START_EXT         0x8C84
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_START_NV          0x8C84
+#define LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_STRIDE            0x934C
+#define LOCAL_GL_TRANSFORM_FEEDBACK_NV                       0x8E22
+#define LOCAL_GL_TRANSFORM_FEEDBACK_OVERFLOW                 0x82EC
+#define LOCAL_GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB             0x82EC
+#define LOCAL_GL_TRANSFORM_FEEDBACK_PAUSED                   0x8E23
+#define LOCAL_GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN       0x8C88
+#define LOCAL_GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN_EXT   0x8C88
+#define LOCAL_GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN_NV    0x8C88
+#define LOCAL_GL_TRANSFORM_FEEDBACK_RECORD_NV                0x8C86
+#define LOCAL_GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW          0x82ED
+#define LOCAL_GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB      0x82ED
+#define LOCAL_GL_TRANSFORM_FEEDBACK_VARYING                  0x92F4
+#define LOCAL_GL_TRANSFORM_FEEDBACK_VARYINGS                 0x8C83
+#define LOCAL_GL_TRANSFORM_FEEDBACK_VARYINGS_EXT             0x8C83
+#define LOCAL_GL_TRANSFORM_FEEDBACK_VARYINGS_NV              0x8C83
+#define LOCAL_GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH       0x8C76
+#define LOCAL_GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH_EXT   0x8C76
+#define LOCAL_GL_TRANSFORM_HINT_APPLE                        0x85B1
+#define LOCAL_GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE       0x93A0
+#define LOCAL_GL_TRANSLATE_2D_NV                             0x9090
+#define LOCAL_GL_TRANSLATE_3D_NV                             0x9091
+#define LOCAL_GL_TRANSLATE_X_NV                              0x908E
+#define LOCAL_GL_TRANSLATE_Y_NV                              0x908F
+#define LOCAL_GL_TRANSPOSE_AFFINE_2D_NV                      0x9096
+#define LOCAL_GL_TRANSPOSE_AFFINE_3D_NV                      0x9098
+#define LOCAL_GL_TRANSPOSE_COLOR_MATRIX                      0x84E6
+#define LOCAL_GL_TRANSPOSE_COLOR_MATRIX_ARB                  0x84E6
+#define LOCAL_GL_TRANSPOSE_CURRENT_MATRIX_ARB                0x88B7
+#define LOCAL_GL_TRANSPOSE_MODELVIEW_MATRIX                  0x84E3
+#define LOCAL_GL_TRANSPOSE_MODELVIEW_MATRIX_ARB              0x84E3
+#define LOCAL_GL_TRANSPOSE_NV                                0x862C
+#define LOCAL_GL_TRANSPOSE_PROGRAM_MATRIX_EXT                0x8E2E
+#define LOCAL_GL_TRANSPOSE_PROJECTION_MATRIX                 0x84E4
+#define LOCAL_GL_TRANSPOSE_PROJECTION_MATRIX_ARB             0x84E4
+#define LOCAL_GL_TRANSPOSE_TEXTURE_MATRIX                    0x84E5
+#define LOCAL_GL_TRANSPOSE_TEXTURE_MATRIX_ARB                0x84E5
+#define LOCAL_GL_TRIANGLES                                   0x0004
+#define LOCAL_GL_TRIANGLES_ADJACENCY                         0x000C
+#define LOCAL_GL_TRIANGLES_ADJACENCY_ARB                     0x000C
+#define LOCAL_GL_TRIANGLES_ADJACENCY_EXT                     0x000C
+#define LOCAL_GL_TRIANGLES_ADJACENCY_OES                     0x000C
+#define LOCAL_GL_TRIANGLE_FAN                                0x0006
+#define LOCAL_GL_TRIANGLE_LIST_SUN                           0x81D7
+#define LOCAL_GL_TRIANGLE_MESH_SUN                           0x8615
+#define LOCAL_GL_TRIANGLE_STRIP                              0x0005
+#define LOCAL_GL_TRIANGLE_STRIP_ADJACENCY                    0x000D
+#define LOCAL_GL_TRIANGLE_STRIP_ADJACENCY_ARB                0x000D
+#define LOCAL_GL_TRIANGLE_STRIP_ADJACENCY_EXT                0x000D
+#define LOCAL_GL_TRIANGLE_STRIP_ADJACENCY_OES                0x000D
+#define LOCAL_GL_TRIANGULAR_NV                               0x90A5
+#define LOCAL_GL_TRUE                                        1
+#define LOCAL_GL_TYPE                                        0x92FA
+#define LOCAL_GL_UNCORRELATED_NV                             0x9282
+#define LOCAL_GL_UNDEFINED_APPLE                             0x8A1C
+#define LOCAL_GL_UNDEFINED_VERTEX                            0x8260
+#define LOCAL_GL_UNDEFINED_VERTEX_EXT                        0x8260
+#define LOCAL_GL_UNDEFINED_VERTEX_OES                        0x8260
+#define LOCAL_GL_UNIFORM                                     0x92E1
+#define LOCAL_GL_UNIFORM_ADDRESS_COMMAND_NV                  0x000A
+#define LOCAL_GL_UNIFORM_ARRAY_STRIDE                        0x8A3C
+#define LOCAL_GL_UNIFORM_ATOMIC_COUNTER_BUFFER_INDEX         0x92DA
+#define LOCAL_GL_UNIFORM_BARRIER_BIT                         0x00000004
+#define LOCAL_GL_UNIFORM_BARRIER_BIT_EXT                     0x00000004
+#define LOCAL_GL_UNIFORM_BLOCK                               0x92E2
+#define LOCAL_GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS               0x8A42
+#define LOCAL_GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES        0x8A43
+#define LOCAL_GL_UNIFORM_BLOCK_BINDING                       0x8A3F
+#define LOCAL_GL_UNIFORM_BLOCK_DATA_SIZE                     0x8A40
+#define LOCAL_GL_UNIFORM_BLOCK_INDEX                         0x8A3A
+#define LOCAL_GL_UNIFORM_BLOCK_NAME_LENGTH                   0x8A41
+#define LOCAL_GL_UNIFORM_BLOCK_REFERENCED_BY_COMPUTE_SHADER  0x90EC
+#define LOCAL_GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER 0x8A46
+#define LOCAL_GL_UNIFORM_BLOCK_REFERENCED_BY_GEOMETRY_SHADER 0x8A45
+#define LOCAL_GL_UNIFORM_BLOCK_REFERENCED_BY_MESH_SHADER_NV  0x959C
+#define LOCAL_GL_UNIFORM_BLOCK_REFERENCED_BY_TASK_SHADER_NV  0x959D
+#define LOCAL_GL_UNIFORM_BLOCK_REFERENCED_BY_TESS_CONTROL_SHADER     0x84F0
+#define LOCAL_GL_UNIFORM_BLOCK_REFERENCED_BY_TESS_EVALUATION_SHADER  0x84F1
+#define LOCAL_GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER   0x8A44
+#define LOCAL_GL_UNIFORM_BUFFER                              0x8A11
+#define LOCAL_GL_UNIFORM_BUFFER_ADDRESS_NV                   0x936F
+#define LOCAL_GL_UNIFORM_BUFFER_BINDING                      0x8A28
+#define LOCAL_GL_UNIFORM_BUFFER_BINDING_EXT                  0x8DEF
+#define LOCAL_GL_UNIFORM_BUFFER_EXT                          0x8DEE
+#define LOCAL_GL_UNIFORM_BUFFER_LENGTH_NV                    0x9370
+#define LOCAL_GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT             0x8A34
+#define LOCAL_GL_UNIFORM_BUFFER_SIZE                         0x8A2A
+#define LOCAL_GL_UNIFORM_BUFFER_START                        0x8A29
+#define LOCAL_GL_UNIFORM_BUFFER_UNIFIED_NV                   0x936E
+#define LOCAL_GL_UNIFORM_IS_ROW_MAJOR                        0x8A3E
+#define LOCAL_GL_UNIFORM_MATRIX_STRIDE                       0x8A3D
+#define LOCAL_GL_UNIFORM_NAME_LENGTH                         0x8A39
+#define LOCAL_GL_UNIFORM_OFFSET                              0x8A3B
+#define LOCAL_GL_UNIFORM_SIZE                                0x8A38
+#define LOCAL_GL_UNIFORM_TYPE                                0x8A37
+#define LOCAL_GL_UNKNOWN_CONTEXT_RESET                       0x8255
+#define LOCAL_GL_UNKNOWN_CONTEXT_RESET_ARB                   0x8255
+#define LOCAL_GL_UNKNOWN_CONTEXT_RESET_EXT                   0x8255
+#define LOCAL_GL_UNKNOWN_CONTEXT_RESET_KHR                   0x8255
+#define LOCAL_GL_UNPACK_ALIGNMENT                            0x0CF5
+#define LOCAL_GL_UNPACK_CLIENT_STORAGE_APPLE                 0x85B2
+#define LOCAL_GL_UNPACK_CMYK_HINT_EXT                        0x800F
+#define LOCAL_GL_UNPACK_COLORSPACE_CONVERSION_WEBGL          0x9243
+#define LOCAL_GL_UNPACK_COMPRESSED_BLOCK_DEPTH               0x9129
+#define LOCAL_GL_UNPACK_COMPRESSED_BLOCK_HEIGHT              0x9128
+#define LOCAL_GL_UNPACK_COMPRESSED_BLOCK_SIZE                0x912A
+#define LOCAL_GL_UNPACK_COMPRESSED_BLOCK_WIDTH               0x9127
+#define LOCAL_GL_UNPACK_COMPRESSED_SIZE_SGIX                 0x831A
+#define LOCAL_GL_UNPACK_CONSTANT_DATA_SUNX                   0x81D5
+#define LOCAL_GL_UNPACK_FLIP_Y_WEBGL                         0x9240
+#define LOCAL_GL_UNPACK_IMAGE_DEPTH_SGIS                     0x8133
+#define LOCAL_GL_UNPACK_IMAGE_HEIGHT                         0x806E
+#define LOCAL_GL_UNPACK_IMAGE_HEIGHT_EXT                     0x806E
+#define LOCAL_GL_UNPACK_LSB_FIRST                            0x0CF1
+#define LOCAL_GL_UNPACK_PREMULTIPLY_ALPHA_WEBGL              0x9241
+#define LOCAL_GL_UNPACK_RESAMPLE_OML                         0x8985
+#define LOCAL_GL_UNPACK_RESAMPLE_SGIX                        0x842F
+#define LOCAL_GL_UNPACK_ROW_BYTES_APPLE                      0x8A16
+#define LOCAL_GL_UNPACK_ROW_LENGTH                           0x0CF2
+#define LOCAL_GL_UNPACK_ROW_LENGTH_EXT                       0x0CF2
+#define LOCAL_GL_UNPACK_SKIP_IMAGES                          0x806D
+#define LOCAL_GL_UNPACK_SKIP_IMAGES_EXT                      0x806D
+#define LOCAL_GL_UNPACK_SKIP_PIXELS                          0x0CF4
+#define LOCAL_GL_UNPACK_SKIP_PIXELS_EXT                      0x0CF4
+#define LOCAL_GL_UNPACK_SKIP_ROWS                            0x0CF3
+#define LOCAL_GL_UNPACK_SKIP_ROWS_EXT                        0x0CF3
+#define LOCAL_GL_UNPACK_SKIP_VOLUMES_SGIS                    0x8132
+#define LOCAL_GL_UNPACK_SUBSAMPLE_RATE_SGIX                  0x85A1
+#define LOCAL_GL_UNPACK_SWAP_BYTES                           0x0CF0
+#define LOCAL_GL_UNSIGNALED                                  0x9118
+#define LOCAL_GL_UNSIGNALED_APPLE                            0x9118
+#define LOCAL_GL_UNSIGNED_BYTE                               0x1401
+#define LOCAL_GL_UNSIGNED_BYTE_2_3_3_REV                     0x8362
+#define LOCAL_GL_UNSIGNED_BYTE_2_3_3_REV_EXT                 0x8362
+#define LOCAL_GL_UNSIGNED_BYTE_3_3_2                         0x8032
+#define LOCAL_GL_UNSIGNED_BYTE_3_3_2_EXT                     0x8032
+#define LOCAL_GL_UNSIGNED_IDENTITY_NV                        0x8536
+#define LOCAL_GL_UNSIGNED_INT                                0x1405
+#define LOCAL_GL_UNSIGNED_INT16_NV                           0x8FF0
+#define LOCAL_GL_UNSIGNED_INT16_VEC2_NV                      0x8FF1
+#define LOCAL_GL_UNSIGNED_INT16_VEC3_NV                      0x8FF2
+#define LOCAL_GL_UNSIGNED_INT16_VEC4_NV                      0x8FF3
+#define LOCAL_GL_UNSIGNED_INT64_AMD                          0x8BC2
+#define LOCAL_GL_UNSIGNED_INT64_ARB                          0x140F
+#define LOCAL_GL_UNSIGNED_INT64_NV                           0x140F
+#define LOCAL_GL_UNSIGNED_INT64_VEC2_ARB                     0x8FF5
+#define LOCAL_GL_UNSIGNED_INT64_VEC2_NV                      0x8FF5
+#define LOCAL_GL_UNSIGNED_INT64_VEC3_ARB                     0x8FF6
+#define LOCAL_GL_UNSIGNED_INT64_VEC3_NV                      0x8FF6
+#define LOCAL_GL_UNSIGNED_INT64_VEC4_ARB                     0x8FF7
+#define LOCAL_GL_UNSIGNED_INT64_VEC4_NV                      0x8FF7
+#define LOCAL_GL_UNSIGNED_INT8_NV                            0x8FEC
+#define LOCAL_GL_UNSIGNED_INT8_VEC2_NV                       0x8FED
+#define LOCAL_GL_UNSIGNED_INT8_VEC3_NV                       0x8FEE
+#define LOCAL_GL_UNSIGNED_INT8_VEC4_NV                       0x8FEF
+#define LOCAL_GL_UNSIGNED_INT_10F_11F_11F_REV                0x8C3B
+#define LOCAL_GL_UNSIGNED_INT_10F_11F_11F_REV_APPLE          0x8C3B
+#define LOCAL_GL_UNSIGNED_INT_10F_11F_11F_REV_EXT            0x8C3B
+#define LOCAL_GL_UNSIGNED_INT_10_10_10_2                     0x8036
+#define LOCAL_GL_UNSIGNED_INT_10_10_10_2_EXT                 0x8036
+#define LOCAL_GL_UNSIGNED_INT_10_10_10_2_OES                 0x8DF6
+#define LOCAL_GL_UNSIGNED_INT_24_8                           0x84FA
+#define LOCAL_GL_UNSIGNED_INT_24_8_EXT                       0x84FA
+#define LOCAL_GL_UNSIGNED_INT_24_8_MESA                      0x8751
+#define LOCAL_GL_UNSIGNED_INT_24_8_NV                        0x84FA
+#define LOCAL_GL_UNSIGNED_INT_24_8_OES                       0x84FA
+#define LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV                 0x8368
+#define LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV_EXT             0x8368
+#define LOCAL_GL_UNSIGNED_INT_5_9_9_9_REV                    0x8C3E
+#define LOCAL_GL_UNSIGNED_INT_5_9_9_9_REV_APPLE              0x8C3E
+#define LOCAL_GL_UNSIGNED_INT_5_9_9_9_REV_EXT                0x8C3E
+#define LOCAL_GL_UNSIGNED_INT_8_24_REV_MESA                  0x8752
+#define LOCAL_GL_UNSIGNED_INT_8_8_8_8                        0x8035
+#define LOCAL_GL_UNSIGNED_INT_8_8_8_8_EXT                    0x8035
+#define LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV                    0x8367
+#define LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV_EXT                0x8367
+#define LOCAL_GL_UNSIGNED_INT_8_8_S8_S8_REV_NV               0x86DB
+#define LOCAL_GL_UNSIGNED_INT_ATOMIC_COUNTER                 0x92DB
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_1D                       0x9062
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_1D_ARRAY                 0x9068
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_1D_ARRAY_EXT             0x9068
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_1D_EXT                   0x9062
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D                       0x9063
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_ARRAY                 0x9069
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_ARRAY_EXT             0x9069
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_EXT                   0x9063
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE           0x906B
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY     0x906C
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_ARRAY_EXT 0x906C
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_MULTISAMPLE_EXT       0x906B
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_RECT                  0x9065
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_2D_RECT_EXT              0x9065
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_3D                       0x9064
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_3D_EXT                   0x9064
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_BUFFER                   0x9067
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_BUFFER_EXT               0x9067
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_BUFFER_OES               0x9067
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_CUBE                     0x9066
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_CUBE_EXT                 0x9066
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY           0x906A
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY_EXT       0x906A
+#define LOCAL_GL_UNSIGNED_INT_IMAGE_CUBE_MAP_ARRAY_OES       0x906A
+#define LOCAL_GL_UNSIGNED_INT_S8_S8_8_8_NV                   0x86DA
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_1D                     0x8DD1
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_1D_ARRAY               0x8DD6
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_1D_ARRAY_EXT           0x8DD6
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_1D_EXT                 0x8DD1
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D                     0x8DD2
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_ARRAY               0x8DD7
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_ARRAY_EXT           0x8DD7
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_EXT                 0x8DD2
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE         0x910A
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY   0x910D
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_MULTISAMPLE_ARRAY_OES       0x910D
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_RECT                0x8DD5
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_2D_RECT_EXT            0x8DD5
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_3D                     0x8DD3
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_3D_EXT                 0x8DD3
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_BUFFER                 0x8DD8
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_BUFFER_AMD             0x9003
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_BUFFER_EXT             0x8DD8
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_BUFFER_OES             0x8DD8
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE                   0x8DD4
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE_EXT               0x8DD4
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY         0x900F
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY_ARB     0x900F
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY_EXT     0x900F
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_CUBE_MAP_ARRAY_OES     0x900F
+#define LOCAL_GL_UNSIGNED_INT_SAMPLER_RENDERBUFFER_NV        0x8E58
+#define LOCAL_GL_UNSIGNED_INT_VEC2                           0x8DC6
+#define LOCAL_GL_UNSIGNED_INT_VEC2_EXT                       0x8DC6
+#define LOCAL_GL_UNSIGNED_INT_VEC3                           0x8DC7
+#define LOCAL_GL_UNSIGNED_INT_VEC3_EXT                       0x8DC7
+#define LOCAL_GL_UNSIGNED_INT_VEC4                           0x8DC8
+#define LOCAL_GL_UNSIGNED_INT_VEC4_EXT                       0x8DC8
+#define LOCAL_GL_UNSIGNED_INVERT_NV                          0x8537
+#define LOCAL_GL_UNSIGNED_NORMALIZED                         0x8C17
+#define LOCAL_GL_UNSIGNED_NORMALIZED_ARB                     0x8C17
+#define LOCAL_GL_UNSIGNED_NORMALIZED_EXT                     0x8C17
+#define LOCAL_GL_UNSIGNED_SHORT                              0x1403
+#define LOCAL_GL_UNSIGNED_SHORT_15_1_MESA                    0x8753
+#define LOCAL_GL_UNSIGNED_SHORT_1_15_REV_MESA                0x8754
+#define LOCAL_GL_UNSIGNED_SHORT_1_5_5_5_REV                  0x8366
+#define LOCAL_GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT              0x8366
+#define LOCAL_GL_UNSIGNED_SHORT_4_4_4_4                      0x8033
+#define LOCAL_GL_UNSIGNED_SHORT_4_4_4_4_EXT                  0x8033
+#define LOCAL_GL_UNSIGNED_SHORT_4_4_4_4_REV                  0x8365
+#define LOCAL_GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT              0x8365
+#define LOCAL_GL_UNSIGNED_SHORT_4_4_4_4_REV_IMG              0x8365
+#define LOCAL_GL_UNSIGNED_SHORT_5_5_5_1                      0x8034
+#define LOCAL_GL_UNSIGNED_SHORT_5_5_5_1_EXT                  0x8034
+#define LOCAL_GL_UNSIGNED_SHORT_5_6_5                        0x8363
+#define LOCAL_GL_UNSIGNED_SHORT_5_6_5_EXT                    0x8363
+#define LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV                    0x8364
+#define LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV_EXT                0x8364
+#define LOCAL_GL_UNSIGNED_SHORT_8_8_APPLE                    0x85BA
+#define LOCAL_GL_UNSIGNED_SHORT_8_8_MESA                     0x85BA
+#define LOCAL_GL_UNSIGNED_SHORT_8_8_REV_APPLE                0x85BB
+#define LOCAL_GL_UNSIGNED_SHORT_8_8_REV_MESA                 0x85BB
+#define LOCAL_GL_UPLOAD_GPU_MASK_NVX                         0x954A
+#define LOCAL_GL_UPPER_LEFT                                  0x8CA2
+#define LOCAL_GL_UPPER_LEFT_EXT                              0x8CA2
+#define LOCAL_GL_USE_MISSING_GLYPH_NV                        0x90AA
+#define LOCAL_GL_UTF16_NV                                    0x909B
+#define LOCAL_GL_UTF8_NV                                     0x909A
+#define LOCAL_GL_UUID_SIZE_EXT                               16
+#define LOCAL_GL_V2F                                         0x2A20
+#define LOCAL_GL_V3F                                         0x2A21
+#define LOCAL_GL_VALIDATE_SHADER_BINARY_QCOM                 0x96A3
+#define LOCAL_GL_VALIDATE_STATUS                             0x8B83
+#define LOCAL_GL_VARIABLE_A_NV                               0x8523
+#define LOCAL_GL_VARIABLE_B_NV                               0x8524
+#define LOCAL_GL_VARIABLE_C_NV                               0x8525
+#define LOCAL_GL_VARIABLE_D_NV                               0x8526
+#define LOCAL_GL_VARIABLE_E_NV                               0x8527
+#define LOCAL_GL_VARIABLE_F_NV                               0x8528
+#define LOCAL_GL_VARIABLE_G_NV                               0x8529
+#define LOCAL_GL_VARIANT_ARRAY_EXT                           0x87E8
+#define LOCAL_GL_VARIANT_ARRAY_POINTER_EXT                   0x87E9
+#define LOCAL_GL_VARIANT_ARRAY_STRIDE_EXT                    0x87E6
+#define LOCAL_GL_VARIANT_ARRAY_TYPE_EXT                      0x87E7
+#define LOCAL_GL_VARIANT_DATATYPE_EXT                        0x87E5
+#define LOCAL_GL_VARIANT_EXT                                 0x87C1
+#define LOCAL_GL_VARIANT_VALUE_EXT                           0x87E4
+#define LOCAL_GL_VBO_FREE_MEMORY_ATI                         0x87FB
+#define LOCAL_GL_VECTOR_EXT                                  0x87BF
+#define LOCAL_GL_VENDOR                                      0x1F00
+#define LOCAL_GL_VERSION                                     0x1F02
+#define LOCAL_GL_VERSION_ES_CL_1_0                           1
+#define LOCAL_GL_VERSION_ES_CL_1_1                           1
+#define LOCAL_GL_VERSION_ES_CM_1_1                           1
+#define LOCAL_GL_VERTEX23_BIT_PGI                            0x00000004
+#define LOCAL_GL_VERTEX4_BIT_PGI                             0x00000008
+#define LOCAL_GL_VERTEX_ARRAY                                0x8074
+#define LOCAL_GL_VERTEX_ARRAY_ADDRESS_NV                     0x8F21
+#define LOCAL_GL_VERTEX_ARRAY_BINDING                        0x85B5
+#define LOCAL_GL_VERTEX_ARRAY_BINDING_APPLE                  0x85B5
+#define LOCAL_GL_VERTEX_ARRAY_BINDING_OES                    0x85B5
+#define LOCAL_GL_VERTEX_ARRAY_BUFFER_BINDING                 0x8896
+#define LOCAL_GL_VERTEX_ARRAY_BUFFER_BINDING_ARB             0x8896
+#define LOCAL_GL_VERTEX_ARRAY_COUNT_EXT                      0x807D
+#define LOCAL_GL_VERTEX_ARRAY_EXT                            0x8074
+#define LOCAL_GL_VERTEX_ARRAY_KHR                            0x8074
+#define LOCAL_GL_VERTEX_ARRAY_LENGTH_NV                      0x8F2B
+#define LOCAL_GL_VERTEX_ARRAY_LIST_IBM                       103070
+#define LOCAL_GL_VERTEX_ARRAY_LIST_STRIDE_IBM                103080
+#define LOCAL_GL_VERTEX_ARRAY_OBJECT_AMD                     0x9154
+#define LOCAL_GL_VERTEX_ARRAY_OBJECT_EXT                     0x9154
+#define LOCAL_GL_VERTEX_ARRAY_PARALLEL_POINTERS_INTEL        0x83F5
+#define LOCAL_GL_VERTEX_ARRAY_POINTER                        0x808E
+#define LOCAL_GL_VERTEX_ARRAY_POINTER_EXT                    0x808E
+#define LOCAL_GL_VERTEX_ARRAY_RANGE_APPLE                    0x851D
+#define LOCAL_GL_VERTEX_ARRAY_RANGE_LENGTH_APPLE             0x851E
+#define LOCAL_GL_VERTEX_ARRAY_RANGE_LENGTH_NV                0x851E
+#define LOCAL_GL_VERTEX_ARRAY_RANGE_NV                       0x851D
+#define LOCAL_GL_VERTEX_ARRAY_RANGE_POINTER_APPLE            0x8521
+#define LOCAL_GL_VERTEX_ARRAY_RANGE_POINTER_NV               0x8521
+#define LOCAL_GL_VERTEX_ARRAY_RANGE_VALID_NV                 0x851F
+#define LOCAL_GL_VERTEX_ARRAY_RANGE_WITHOUT_FLUSH_NV         0x8533
+#define LOCAL_GL_VERTEX_ARRAY_SIZE                           0x807A
+#define LOCAL_GL_VERTEX_ARRAY_SIZE_EXT                       0x807A
+#define LOCAL_GL_VERTEX_ARRAY_STORAGE_HINT_APPLE             0x851F
+#define LOCAL_GL_VERTEX_ARRAY_STRIDE                         0x807C
+#define LOCAL_GL_VERTEX_ARRAY_STRIDE_EXT                     0x807C
+#define LOCAL_GL_VERTEX_ARRAY_TYPE                           0x807B
+#define LOCAL_GL_VERTEX_ARRAY_TYPE_EXT                       0x807B
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY0_NV                     0x8650
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY10_NV                    0x865A
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY11_NV                    0x865B
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY12_NV                    0x865C
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY13_NV                    0x865D
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY14_NV                    0x865E
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY15_NV                    0x865F
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY1_NV                     0x8651
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY2_NV                     0x8652
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY3_NV                     0x8653
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY4_NV                     0x8654
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY5_NV                     0x8655
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY6_NV                     0x8656
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY7_NV                     0x8657
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY8_NV                     0x8658
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY9_NV                     0x8659
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_ADDRESS_NV              0x8F20
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT             0x00000001
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT_EXT         0x00000001
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING          0x889F
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB      0x889F
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR                 0x88FE
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE           0x88FE
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ARB             0x88FE
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR_EXT             0x88FE
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR_NV              0x88FE
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_ENABLED                 0x8622
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB             0x8622
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_INTEGER                 0x88FD
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_INTEGER_EXT             0x88FD
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_INTEGER_NV              0x88FD
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_LENGTH_NV               0x8F2A
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_LONG                    0x874E
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_NORMALIZED              0x886A
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB          0x886A
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_POINTER                 0x8645
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB             0x8645
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE                    0x8623
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB                0x8623
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_STRIDE                  0x8624
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB              0x8624
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE                    0x8625
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB                0x8625
+#define LOCAL_GL_VERTEX_ATTRIB_ARRAY_UNIFIED_NV              0x8F1E
+#define LOCAL_GL_VERTEX_ATTRIB_BINDING                       0x82D4
+#define LOCAL_GL_VERTEX_ATTRIB_MAP1_APPLE                    0x8A00
+#define LOCAL_GL_VERTEX_ATTRIB_MAP1_COEFF_APPLE              0x8A03
+#define LOCAL_GL_VERTEX_ATTRIB_MAP1_DOMAIN_APPLE             0x8A05
+#define LOCAL_GL_VERTEX_ATTRIB_MAP1_ORDER_APPLE              0x8A04
+#define LOCAL_GL_VERTEX_ATTRIB_MAP1_SIZE_APPLE               0x8A02
+#define LOCAL_GL_VERTEX_ATTRIB_MAP2_APPLE                    0x8A01
+#define LOCAL_GL_VERTEX_ATTRIB_MAP2_COEFF_APPLE              0x8A07
+#define LOCAL_GL_VERTEX_ATTRIB_MAP2_DOMAIN_APPLE             0x8A09
+#define LOCAL_GL_VERTEX_ATTRIB_MAP2_ORDER_APPLE              0x8A08
+#define LOCAL_GL_VERTEX_ATTRIB_MAP2_SIZE_APPLE               0x8A06
+#define LOCAL_GL_VERTEX_ATTRIB_RELATIVE_OFFSET               0x82D5
+#define LOCAL_GL_VERTEX_BINDING_BUFFER                       0x8F4F
+#define LOCAL_GL_VERTEX_BINDING_DIVISOR                      0x82D6
+#define LOCAL_GL_VERTEX_BINDING_OFFSET                       0x82D7
+#define LOCAL_GL_VERTEX_BINDING_STRIDE                       0x82D8
+#define LOCAL_GL_VERTEX_BLEND_ARB                            0x86A7
+#define LOCAL_GL_VERTEX_CONSISTENT_HINT_PGI                  0x1A22B
+#define LOCAL_GL_VERTEX_DATA_HINT_PGI                        0x1A22A
+#define LOCAL_GL_VERTEX_ELEMENT_SWIZZLE_AMD                  0x91A4
+#define LOCAL_GL_VERTEX_ID_NV                                0x8C7B
+#define LOCAL_GL_VERTEX_ID_SWIZZLE_AMD                       0x91A5
+#define LOCAL_GL_VERTEX_PRECLIP_HINT_SGIX                    0x83EF
+#define LOCAL_GL_VERTEX_PRECLIP_SGIX                         0x83EE
+#define LOCAL_GL_VERTEX_PROGRAM_ARB                          0x8620
+#define LOCAL_GL_VERTEX_PROGRAM_BINDING_NV                   0x864A
+#define LOCAL_GL_VERTEX_PROGRAM_CALLBACK_DATA_MESA           0x8BB7
+#define LOCAL_GL_VERTEX_PROGRAM_CALLBACK_FUNC_MESA           0x8BB6
+#define LOCAL_GL_VERTEX_PROGRAM_CALLBACK_MESA                0x8BB5
+#define LOCAL_GL_VERTEX_PROGRAM_NV                           0x8620
+#define LOCAL_GL_VERTEX_PROGRAM_PARAMETER_BUFFER_NV          0x8DA2
+#define LOCAL_GL_VERTEX_PROGRAM_POINT_SIZE                   0x8642
+#define LOCAL_GL_VERTEX_PROGRAM_POINT_SIZE_ARB               0x8642
+#define LOCAL_GL_VERTEX_PROGRAM_POINT_SIZE_NV                0x8642
+#define LOCAL_GL_VERTEX_PROGRAM_POSITION_MESA                0x8BB4
+#define LOCAL_GL_VERTEX_PROGRAM_TWO_SIDE                     0x8643
+#define LOCAL_GL_VERTEX_PROGRAM_TWO_SIDE_ARB                 0x8643
+#define LOCAL_GL_VERTEX_PROGRAM_TWO_SIDE_NV                  0x8643
+#define LOCAL_GL_VERTEX_SHADER                               0x8B31
+#define LOCAL_GL_VERTEX_SHADER_ARB                           0x8B31
+#define LOCAL_GL_VERTEX_SHADER_BINDING_EXT                   0x8781
+#define LOCAL_GL_VERTEX_SHADER_BIT                           0x00000001
+#define LOCAL_GL_VERTEX_SHADER_BIT_EXT                       0x00000001
+#define LOCAL_GL_VERTEX_SHADER_EXT                           0x8780
+#define LOCAL_GL_VERTEX_SHADER_INSTRUCTIONS_EXT              0x87CF
+#define LOCAL_GL_VERTEX_SHADER_INVARIANTS_EXT                0x87D1
+#define LOCAL_GL_VERTEX_SHADER_INVOCATIONS                   0x82F0
+#define LOCAL_GL_VERTEX_SHADER_INVOCATIONS_ARB               0x82F0
+#define LOCAL_GL_VERTEX_SHADER_LOCALS_EXT                    0x87D3
+#define LOCAL_GL_VERTEX_SHADER_LOCAL_CONSTANTS_EXT           0x87D2
+#define LOCAL_GL_VERTEX_SHADER_OPTIMIZED_EXT                 0x87D4
+#define LOCAL_GL_VERTEX_SHADER_VARIANTS_EXT                  0x87D0
+#define LOCAL_GL_VERTEX_SOURCE_ATI                           0x8774
+#define LOCAL_GL_VERTEX_STATE_PROGRAM_NV                     0x8621
+#define LOCAL_GL_VERTEX_STREAM0_ATI                          0x876C
+#define LOCAL_GL_VERTEX_STREAM1_ATI                          0x876D
+#define LOCAL_GL_VERTEX_STREAM2_ATI                          0x876E
+#define LOCAL_GL_VERTEX_STREAM3_ATI                          0x876F
+#define LOCAL_GL_VERTEX_STREAM4_ATI                          0x8770
+#define LOCAL_GL_VERTEX_STREAM5_ATI                          0x8771
+#define LOCAL_GL_VERTEX_STREAM6_ATI                          0x8772
+#define LOCAL_GL_VERTEX_STREAM7_ATI                          0x8773
+#define LOCAL_GL_VERTEX_SUBROUTINE                           0x92E8
+#define LOCAL_GL_VERTEX_SUBROUTINE_UNIFORM                   0x92EE
+#define LOCAL_GL_VERTEX_TEXTURE                              0x829B
+#define LOCAL_GL_VERTEX_WEIGHTING_EXT                        0x8509
+#define LOCAL_GL_VERTEX_WEIGHT_ARRAY_EXT                     0x850C
+#define LOCAL_GL_VERTEX_WEIGHT_ARRAY_POINTER_EXT             0x8510
+#define LOCAL_GL_VERTEX_WEIGHT_ARRAY_SIZE_EXT                0x850D
+#define LOCAL_GL_VERTEX_WEIGHT_ARRAY_STRIDE_EXT              0x850F
+#define LOCAL_GL_VERTEX_WEIGHT_ARRAY_TYPE_EXT                0x850E
+#define LOCAL_GL_VERTICAL_LINE_TO_NV                         0x08
+#define LOCAL_GL_VERTICES_SUBMITTED                          0x82EE
+#define LOCAL_GL_VERTICES_SUBMITTED_ARB                      0x82EE
+#define LOCAL_GL_VIBRANCE_BIAS_NV                            0x8719
+#define LOCAL_GL_VIBRANCE_SCALE_NV                           0x8713
+#define LOCAL_GL_VIDEO_BUFFER_BINDING_NV                     0x9021
+#define LOCAL_GL_VIDEO_BUFFER_INTERNAL_FORMAT_NV             0x902D
+#define LOCAL_GL_VIDEO_BUFFER_NV                             0x9020
+#define LOCAL_GL_VIDEO_BUFFER_PITCH_NV                       0x9028
+#define LOCAL_GL_VIDEO_CAPTURE_FIELD_LOWER_HEIGHT_NV         0x903B
+#define LOCAL_GL_VIDEO_CAPTURE_FIELD_UPPER_HEIGHT_NV         0x903A
+#define LOCAL_GL_VIDEO_CAPTURE_FRAME_HEIGHT_NV               0x9039
+#define LOCAL_GL_VIDEO_CAPTURE_FRAME_WIDTH_NV                0x9038
+#define LOCAL_GL_VIDEO_CAPTURE_SURFACE_ORIGIN_NV             0x903C
+#define LOCAL_GL_VIDEO_CAPTURE_TO_422_SUPPORTED_NV           0x9026
+#define LOCAL_GL_VIDEO_COLOR_CONVERSION_MATRIX_NV            0x9029
+#define LOCAL_GL_VIDEO_COLOR_CONVERSION_MAX_NV               0x902A
+#define LOCAL_GL_VIDEO_COLOR_CONVERSION_MIN_NV               0x902B
+#define LOCAL_GL_VIDEO_COLOR_CONVERSION_OFFSET_NV            0x902C
+#define LOCAL_GL_VIEWPORT                                    0x0BA2
+#define LOCAL_GL_VIEWPORT_BIT                                0x00000800
+#define LOCAL_GL_VIEWPORT_BOUNDS_RANGE                       0x825D
+#define LOCAL_GL_VIEWPORT_BOUNDS_RANGE_EXT                   0x825D
+#define LOCAL_GL_VIEWPORT_BOUNDS_RANGE_NV                    0x825D
+#define LOCAL_GL_VIEWPORT_BOUNDS_RANGE_OES                   0x825D
+#define LOCAL_GL_VIEWPORT_COMMAND_NV                         0x0010
+#define LOCAL_GL_VIEWPORT_INDEX_PROVOKING_VERTEX             0x825F
+#define LOCAL_GL_VIEWPORT_INDEX_PROVOKING_VERTEX_EXT         0x825F
+#define LOCAL_GL_VIEWPORT_INDEX_PROVOKING_VERTEX_NV          0x825F
+#define LOCAL_GL_VIEWPORT_INDEX_PROVOKING_VERTEX_OES         0x825F
+#define LOCAL_GL_VIEWPORT_POSITION_W_SCALE_NV                0x937C
+#define LOCAL_GL_VIEWPORT_POSITION_W_SCALE_X_COEFF_NV        0x937D
+#define LOCAL_GL_VIEWPORT_POSITION_W_SCALE_Y_COEFF_NV        0x937E
+#define LOCAL_GL_VIEWPORT_SUBPIXEL_BITS                      0x825C
+#define LOCAL_GL_VIEWPORT_SUBPIXEL_BITS_EXT                  0x825C
+#define LOCAL_GL_VIEWPORT_SUBPIXEL_BITS_NV                   0x825C
+#define LOCAL_GL_VIEWPORT_SUBPIXEL_BITS_OES                  0x825C
+#define LOCAL_GL_VIEWPORT_SWIZZLE_NEGATIVE_W_NV              0x9357
+#define LOCAL_GL_VIEWPORT_SWIZZLE_NEGATIVE_X_NV              0x9351
+#define LOCAL_GL_VIEWPORT_SWIZZLE_NEGATIVE_Y_NV              0x9353
+#define LOCAL_GL_VIEWPORT_SWIZZLE_NEGATIVE_Z_NV              0x9355
+#define LOCAL_GL_VIEWPORT_SWIZZLE_POSITIVE_W_NV              0x9356
+#define LOCAL_GL_VIEWPORT_SWIZZLE_POSITIVE_X_NV              0x9350
+#define LOCAL_GL_VIEWPORT_SWIZZLE_POSITIVE_Y_NV              0x9352
+#define LOCAL_GL_VIEWPORT_SWIZZLE_POSITIVE_Z_NV              0x9354
+#define LOCAL_GL_VIEWPORT_SWIZZLE_W_NV                       0x935B
+#define LOCAL_GL_VIEWPORT_SWIZZLE_X_NV                       0x9358
+#define LOCAL_GL_VIEWPORT_SWIZZLE_Y_NV                       0x9359
+#define LOCAL_GL_VIEWPORT_SWIZZLE_Z_NV                       0x935A
+#define LOCAL_GL_VIEW_CLASS_128_BITS                         0x82C4
+#define LOCAL_GL_VIEW_CLASS_16_BITS                          0x82CA
+#define LOCAL_GL_VIEW_CLASS_24_BITS                          0x82C9
+#define LOCAL_GL_VIEW_CLASS_32_BITS                          0x82C8
+#define LOCAL_GL_VIEW_CLASS_48_BITS                          0x82C7
+#define LOCAL_GL_VIEW_CLASS_64_BITS                          0x82C6
+#define LOCAL_GL_VIEW_CLASS_8_BITS                           0x82CB
+#define LOCAL_GL_VIEW_CLASS_96_BITS                          0x82C5
+#define LOCAL_GL_VIEW_CLASS_ASTC_10x10_RGBA                  0x9393
+#define LOCAL_GL_VIEW_CLASS_ASTC_10x5_RGBA                   0x9390
+#define LOCAL_GL_VIEW_CLASS_ASTC_10x6_RGBA                   0x9391
+#define LOCAL_GL_VIEW_CLASS_ASTC_10x8_RGBA                   0x9392
+#define LOCAL_GL_VIEW_CLASS_ASTC_12x10_RGBA                  0x9394
+#define LOCAL_GL_VIEW_CLASS_ASTC_12x12_RGBA                  0x9395
+#define LOCAL_GL_VIEW_CLASS_ASTC_4x4_RGBA                    0x9388
+#define LOCAL_GL_VIEW_CLASS_ASTC_5x4_RGBA                    0x9389
+#define LOCAL_GL_VIEW_CLASS_ASTC_5x5_RGBA                    0x938A
+#define LOCAL_GL_VIEW_CLASS_ASTC_6x5_RGBA                    0x938B
+#define LOCAL_GL_VIEW_CLASS_ASTC_6x6_RGBA                    0x938C
+#define LOCAL_GL_VIEW_CLASS_ASTC_8x5_RGBA                    0x938D
+#define LOCAL_GL_VIEW_CLASS_ASTC_8x6_RGBA                    0x938E
+#define LOCAL_GL_VIEW_CLASS_ASTC_8x8_RGBA                    0x938F
+#define LOCAL_GL_VIEW_CLASS_BPTC_FLOAT                       0x82D3
+#define LOCAL_GL_VIEW_CLASS_BPTC_UNORM                       0x82D2
+#define LOCAL_GL_VIEW_CLASS_EAC_R11                          0x9383
+#define LOCAL_GL_VIEW_CLASS_EAC_RG11                         0x9384
+#define LOCAL_GL_VIEW_CLASS_ETC2_EAC_RGBA                    0x9387
+#define LOCAL_GL_VIEW_CLASS_ETC2_RGB                         0x9385
+#define LOCAL_GL_VIEW_CLASS_ETC2_RGBA                        0x9386
+#define LOCAL_GL_VIEW_CLASS_RGTC1_RED                        0x82D0
+#define LOCAL_GL_VIEW_CLASS_RGTC2_RG                         0x82D1
+#define LOCAL_GL_VIEW_CLASS_S3TC_DXT1_RGB                    0x82CC
+#define LOCAL_GL_VIEW_CLASS_S3TC_DXT1_RGBA                   0x82CD
+#define LOCAL_GL_VIEW_CLASS_S3TC_DXT3_RGBA                   0x82CE
+#define LOCAL_GL_VIEW_CLASS_S3TC_DXT5_RGBA                   0x82CF
+#define LOCAL_GL_VIEW_COMPATIBILITY_CLASS                    0x82B6
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_INDEX_ARB                 0x91A7
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_INDEX_EXT                 0x91A7
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_X_AMD                     0x9195
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_X_ARB                     0x9195
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_X_EXT                     0x9195
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_Y_AMD                     0x9196
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_Y_ARB                     0x9196
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_Y_EXT                     0x9196
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_Z_AMD                     0x9197
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_Z_ARB                     0x9197
+#define LOCAL_GL_VIRTUAL_PAGE_SIZE_Z_EXT                     0x9197
+#define LOCAL_GL_VIVIDLIGHT_NV                               0x92A6
+#define LOCAL_GL_VOLATILE_APPLE                              0x8A1A
+#define LOCAL_GL_WAIT_FAILED                                 0x911D
+#define LOCAL_GL_WAIT_FAILED_APPLE                           0x911D
+#define LOCAL_GL_WARPS_PER_SM_NV                             0x933A
+#define LOCAL_GL_WARP_SIZE_NV                                0x9339
+#define LOCAL_GL_WEIGHTED_AVERAGE_ARB                        0x9367
+#define LOCAL_GL_WEIGHTED_AVERAGE_EXT                        0x9367
+#define LOCAL_GL_WEIGHT_ARRAY_ARB                            0x86AD
+#define LOCAL_GL_WEIGHT_ARRAY_BUFFER_BINDING                 0x889E
+#define LOCAL_GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB             0x889E
+#define LOCAL_GL_WEIGHT_ARRAY_BUFFER_BINDING_OES             0x889E
+#define LOCAL_GL_WEIGHT_ARRAY_OES                            0x86AD
+#define LOCAL_GL_WEIGHT_ARRAY_POINTER_ARB                    0x86AC
+#define LOCAL_GL_WEIGHT_ARRAY_POINTER_OES                    0x86AC
+#define LOCAL_GL_WEIGHT_ARRAY_SIZE_ARB                       0x86AB
+#define LOCAL_GL_WEIGHT_ARRAY_SIZE_OES                       0x86AB
+#define LOCAL_GL_WEIGHT_ARRAY_STRIDE_ARB                     0x86AA
+#define LOCAL_GL_WEIGHT_ARRAY_STRIDE_OES                     0x86AA
+#define LOCAL_GL_WEIGHT_ARRAY_TYPE_ARB                       0x86A9
+#define LOCAL_GL_WEIGHT_ARRAY_TYPE_OES                       0x86A9
+#define LOCAL_GL_WEIGHT_SUM_UNITY_ARB                        0x86A6
+#define LOCAL_GL_WIDE_LINE_HINT_PGI                          0x1A222
+#define LOCAL_GL_WINDOW_RECTANGLE_EXT                        0x8F12
+#define LOCAL_GL_WINDOW_RECTANGLE_MODE_EXT                   0x8F13
+#define LOCAL_GL_WRAP_BORDER_SUN                             0x81D4
+#define LOCAL_GL_WRITEONLY_RENDERING_QCOM                    0x8823
+#define LOCAL_GL_WRITE_DISCARD_NV                            0x88BE
+#define LOCAL_GL_WRITE_ONLY                                  0x88B9
+#define LOCAL_GL_WRITE_ONLY_ARB                              0x88B9
+#define LOCAL_GL_WRITE_ONLY_OES                              0x88B9
+#define LOCAL_GL_WRITE_PIXEL_DATA_RANGE_LENGTH_NV            0x887A
+#define LOCAL_GL_WRITE_PIXEL_DATA_RANGE_NV                   0x8878
+#define LOCAL_GL_WRITE_PIXEL_DATA_RANGE_POINTER_NV           0x887C
+#define LOCAL_GL_W_EXT                                       0x87D8
+#define LOCAL_GL_XOR                                         0x1506
+#define LOCAL_GL_XOR_NV                                      0x1506
+#define LOCAL_GL_X_EXT                                       0x87D5
+#define LOCAL_GL_YCBAYCR8A_4224_NV                           0x9032
+#define LOCAL_GL_YCBCR_422_APPLE                             0x85B9
+#define LOCAL_GL_YCBCR_MESA                                  0x8757
+#define LOCAL_GL_YCBYCR8_422_NV                              0x9031
+#define LOCAL_GL_YCRCBA_SGIX                                 0x8319
+#define LOCAL_GL_YCRCB_422_SGIX                              0x81BB
+#define LOCAL_GL_YCRCB_444_SGIX                              0x81BC
+#define LOCAL_GL_YCRCB_SGIX                                  0x8318
+#define LOCAL_GL_Y_EXT                                       0x87D6
+#define LOCAL_GL_Z400_BINARY_AMD                             0x8740
+#define LOCAL_GL_Z4Y12Z4CB12Z4A12Z4Y12Z4CR12Z4A12_4224_NV    0x9036
+#define LOCAL_GL_Z4Y12Z4CB12Z4CR12_444_NV                    0x9037
+#define LOCAL_GL_Z4Y12Z4CB12Z4Y12Z4CR12_422_NV               0x9035
+#define LOCAL_GL_Z6Y10Z6CB10Z6A10Z6Y10Z6CR10Z6A10_4224_NV    0x9034
+#define LOCAL_GL_Z6Y10Z6CB10Z6Y10Z6CR10_422_NV               0x9033
+#define LOCAL_GL_ZERO                                        0
+#define LOCAL_GL_ZERO_EXT                                    0x87DD
+#define LOCAL_GL_ZERO_TO_ONE                                 0x935F
+#define LOCAL_GL_ZERO_TO_ONE_EXT                             0x935F
+#define LOCAL_GL_ZOOM_X                                      0x0D16
+#define LOCAL_GL_ZOOM_Y                                      0x0D17
+#define LOCAL_GL_Z_EXT                                       0x87D7
+
+// EGL
+#define LOCAL_EGL_ALPHA_FORMAT                               0x3088
+#define LOCAL_EGL_ALPHA_FORMAT_NONPRE                        0x308B
+#define LOCAL_EGL_ALPHA_FORMAT_PRE                           0x308C
+#define LOCAL_EGL_ALPHA_MASK_SIZE                            0x303E
+#define LOCAL_EGL_ALPHA_SIZE                                 0x3021
+#define LOCAL_EGL_ALREADY_SIGNALED_NV                        0x30EA
+#define LOCAL_EGL_AUTO_STEREO_NV                             0x3136
+#define LOCAL_EGL_BACK_BUFFER                                0x3084
+#define LOCAL_EGL_BAD_ACCESS                                 0x3002
+#define LOCAL_EGL_BAD_ALLOC                                  0x3003
+#define LOCAL_EGL_BAD_ATTRIBUTE                              0x3004
+#define LOCAL_EGL_BAD_CONFIG                                 0x3005
+#define LOCAL_EGL_BAD_CONTEXT                                0x3006
+#define LOCAL_EGL_BAD_CURRENT_SURFACE                        0x3007
+#define LOCAL_EGL_BAD_DEVICE_EXT                             0x322B
+#define LOCAL_EGL_BAD_DISPLAY                                0x3008
+#define LOCAL_EGL_BAD_MATCH                                  0x3009
+#define LOCAL_EGL_BAD_NATIVE_PIXMAP                          0x300A
+#define LOCAL_EGL_BAD_NATIVE_WINDOW                          0x300B
+#define LOCAL_EGL_BAD_OUTPUT_LAYER_EXT                       0x322D
+#define LOCAL_EGL_BAD_OUTPUT_PORT_EXT                        0x322E
+#define LOCAL_EGL_BAD_PARAMETER                              0x300C
+#define LOCAL_EGL_BAD_STATE_KHR                              0x321C
+#define LOCAL_EGL_BAD_STREAM_KHR                             0x321B
+#define LOCAL_EGL_BAD_SURFACE                                0x300D
+#define LOCAL_EGL_BIND_TO_TEXTURE_RGB                        0x3039
+#define LOCAL_EGL_BIND_TO_TEXTURE_RGBA                       0x303A
+#define LOCAL_EGL_BITMAP_ORIGIN_KHR                          0x30C8
+#define LOCAL_EGL_BITMAP_PITCH_KHR                           0x30C7
+#define LOCAL_EGL_BITMAP_PIXEL_ALPHA_OFFSET_KHR              0x30CC
+#define LOCAL_EGL_BITMAP_PIXEL_BLUE_OFFSET_KHR               0x30CB
+#define LOCAL_EGL_BITMAP_PIXEL_GREEN_OFFSET_KHR              0x30CA
+#define LOCAL_EGL_BITMAP_PIXEL_LUMINANCE_OFFSET_KHR          0x30CD
+#define LOCAL_EGL_BITMAP_PIXEL_RED_OFFSET_KHR                0x30C9
+#define LOCAL_EGL_BITMAP_PIXEL_SIZE_KHR                      0x3110
+#define LOCAL_EGL_BITMAP_POINTER_KHR                         0x30C6
+#define LOCAL_EGL_BLUE_SIZE                                  0x3022
+#define LOCAL_EGL_BOTTOM_NV                                  0x336E
+#define LOCAL_EGL_BUFFER_AGE_EXT                             0x313D
+#define LOCAL_EGL_BUFFER_AGE_KHR                             0x313D
+#define LOCAL_EGL_BUFFER_COUNT_NV                            0x321D
+#define LOCAL_EGL_BUFFER_DESTROYED                           0x3095
+#define LOCAL_EGL_BUFFER_PRESERVED                           0x3094
+#define LOCAL_EGL_BUFFER_SIZE                                0x3020
+#define LOCAL_EGL_CLIENT_APIS                                0x308D
+#define LOCAL_EGL_CLIENT_PIXMAP_POINTER_HI                   0x8F74
+#define LOCAL_EGL_CL_EVENT_HANDLE                            0x309C
+#define LOCAL_EGL_CL_EVENT_HANDLE_KHR                        0x309C
+#define LOCAL_EGL_COLORSPACE                                 0x3087
+#define LOCAL_EGL_COLORSPACE_LINEAR                          0x308A
+#define LOCAL_EGL_COLORSPACE_sRGB                            0x3089
+#define LOCAL_EGL_COLOR_ARGB_HI                              0x8F73
+#define LOCAL_EGL_COLOR_BUFFER_TYPE                          0x303F
+#define LOCAL_EGL_COLOR_COMPONENT_TYPE_EXT                   0x3339
+#define LOCAL_EGL_COLOR_COMPONENT_TYPE_FIXED_EXT             0x333A
+#define LOCAL_EGL_COLOR_COMPONENT_TYPE_FLOAT_EXT             0x333B
+#define LOCAL_EGL_COLOR_COMPONENT_TYPE_INTEGER_ARM           0x3288
+#define LOCAL_EGL_COLOR_COMPONENT_TYPE_UNSIGNED_INTEGER_ARM  0x3287
+#define LOCAL_EGL_COLOR_FORMAT_HI                            0x8F70
+#define LOCAL_EGL_COLOR_RGBA_HI                              0x8F72
+#define LOCAL_EGL_COLOR_RGB_HI                               0x8F71
+#define LOCAL_EGL_COMPOSITE_DEADLINE_ANDROID                 0x3431
+#define LOCAL_EGL_COMPOSITE_INTERVAL_ANDROID                 0x3432
+#define LOCAL_EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID       0x3433
+#define LOCAL_EGL_COMPOSITION_LATCH_TIME_ANDROID             0x3436
+#define LOCAL_EGL_COMPOSITOR_DROP_NEWEST_FRAME_EXT           0x3462
+#define LOCAL_EGL_COMPOSITOR_KEEP_NEWEST_FRAME_EXT           0x3463
+#define LOCAL_EGL_CONDITION_SATISFIED                        0x30F6
+#define LOCAL_EGL_CONDITION_SATISFIED_KHR                    0x30F6
+#define LOCAL_EGL_CONDITION_SATISFIED_NV                     0x30EC
+#define LOCAL_EGL_CONFIG_CAVEAT                              0x3027
+#define LOCAL_EGL_CONFIG_ID                                  0x3028
+#define LOCAL_EGL_CONFIG_SELECT_GROUP_EXT                    0x34C0
+#define LOCAL_EGL_CONFORMANT                                 0x3042
+#define LOCAL_EGL_CONFORMANT_KHR                             0x3042
+#define LOCAL_EGL_CONSUMER_ACQUIRE_TIMEOUT_USEC_KHR          0x321E
+#define LOCAL_EGL_CONSUMER_AUTO_ORIENTATION_NV               0x3369
+#define LOCAL_EGL_CONSUMER_FRAME_KHR                         0x3213
+#define LOCAL_EGL_CONSUMER_LATENCY_USEC_KHR                  0x3210
+#define LOCAL_EGL_CONSUMER_MAX_FRAME_HINT_NV                 0x3338
+#define LOCAL_EGL_CONSUMER_METADATA_NV                       0x3254
+#define LOCAL_EGL_CONTEXT_CLIENT_TYPE                        0x3097
+#define LOCAL_EGL_CONTEXT_CLIENT_VERSION                     0x3098
+#define LOCAL_EGL_CONTEXT_FLAGS_KHR                          0x30FC
+#define LOCAL_EGL_CONTEXT_LOST                               0x300E
+#define LOCAL_EGL_CONTEXT_MAJOR_VERSION                      0x3098
+#define LOCAL_EGL_CONTEXT_MAJOR_VERSION_KHR                  0x3098
+#define LOCAL_EGL_CONTEXT_MINOR_VERSION                      0x30FB
+#define LOCAL_EGL_CONTEXT_MINOR_VERSION_KHR                  0x30FB
+#define LOCAL_EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT   0x00000002
+#define LOCAL_EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR       0x00000002
+#define LOCAL_EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT            0x00000001
+#define LOCAL_EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR        0x00000001
+#define LOCAL_EGL_CONTEXT_OPENGL_DEBUG                       0x31B0
+#define LOCAL_EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR               0x00000001
+#define LOCAL_EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE          0x31B1
+#define LOCAL_EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR  0x00000002
+#define LOCAL_EGL_CONTEXT_OPENGL_NO_ERROR_KHR                0x31B3
+#define LOCAL_EGL_CONTEXT_OPENGL_PROFILE_MASK                0x30FD
+#define LOCAL_EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR            0x30FD
+#define LOCAL_EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY 0x31BD
+#define LOCAL_EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT     0x3138
+#define LOCAL_EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR     0x31BD
+#define LOCAL_EGL_CONTEXT_OPENGL_ROBUST_ACCESS               0x31B2
+#define LOCAL_EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR       0x00000004
+#define LOCAL_EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT           0x30BF
+#define LOCAL_EGL_CONTEXT_PRIORITY_HIGH_IMG                  0x3101
+#define LOCAL_EGL_CONTEXT_PRIORITY_LEVEL_IMG                 0x3100
+#define LOCAL_EGL_CONTEXT_PRIORITY_LOW_IMG                   0x3103
+#define LOCAL_EGL_CONTEXT_PRIORITY_MEDIUM_IMG                0x3102
+#define LOCAL_EGL_CONTEXT_PRIORITY_REALTIME_NV               0x3357
+#define LOCAL_EGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_KHR         0x2098
+#define LOCAL_EGL_CONTEXT_RELEASE_BEHAVIOR_KHR               0x2097
+#define LOCAL_EGL_CONTEXT_RELEASE_BEHAVIOR_NONE_KHR          0
+#define LOCAL_EGL_CORE_NATIVE_ENGINE                         0x305B
+#define LOCAL_EGL_COVERAGE_BUFFERS_NV                        0x30E0
+#define LOCAL_EGL_COVERAGE_SAMPLES_NV                        0x30E1
+#define LOCAL_EGL_COVERAGE_SAMPLE_RESOLVE_DEFAULT_NV         0x3132
+#define LOCAL_EGL_COVERAGE_SAMPLE_RESOLVE_NONE_NV            0x3133
+#define LOCAL_EGL_COVERAGE_SAMPLE_RESOLVE_NV                 0x3131
+#define LOCAL_EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT       0x3360
+#define LOCAL_EGL_CTA861_3_MAX_FRAME_AVERAGE_LEVEL_EXT       0x3361
+#define LOCAL_EGL_CUDA_DEVICE_NV                             0x323A
+#define LOCAL_EGL_CUDA_EVENT_HANDLE_NV                       0x323B
+#define LOCAL_EGL_D3D11_DEVICE_ANGLE                         0x33A1
+#define LOCAL_EGL_D3D9_DEVICE_ANGLE                          0x33A0
+#define LOCAL_EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE          0x3200
+#define LOCAL_EGL_DEBUG_CALLBACK_KHR                         0x33B8
+#define LOCAL_EGL_DEBUG_MSG_CRITICAL_KHR                     0x33B9
+#define LOCAL_EGL_DEBUG_MSG_ERROR_KHR                        0x33BA
+#define LOCAL_EGL_DEBUG_MSG_INFO_KHR                         0x33BC
+#define LOCAL_EGL_DEBUG_MSG_WARN_KHR                         0x33BB
+#define LOCAL_EGL_DEFAULT_DISPLAY                            EGL_CAST(EGLNativeDisplayType,0)
+#define LOCAL_EGL_DEPTH_ENCODING_NONE_NV                     0
+#define LOCAL_EGL_DEPTH_ENCODING_NONLINEAR_NV                0x30E3
+#define LOCAL_EGL_DEPTH_ENCODING_NV                          0x30E2
+#define LOCAL_EGL_DEPTH_SIZE                                 0x3025
+#define LOCAL_EGL_DEQUEUE_READY_TIME_ANDROID                 0x343B
+#define LOCAL_EGL_DEVICE_EXT                                 0x322C
+#define LOCAL_EGL_DEVICE_UUID_EXT                            0x335C
+#define LOCAL_EGL_DISCARD_SAMPLES_ARM                        0x3286
+#define LOCAL_EGL_DISPLAY_PRESENT_TIME_ANDROID               0x343A
+#define LOCAL_EGL_DISPLAY_SCALING                            10000
+#define LOCAL_EGL_DMA_BUF_PLANE0_FD_EXT                      0x3272
+#define LOCAL_EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT             0x3444
+#define LOCAL_EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT             0x3443
+#define LOCAL_EGL_DMA_BUF_PLANE0_OFFSET_EXT                  0x3273
+#define LOCAL_EGL_DMA_BUF_PLANE0_PITCH_EXT                   0x3274
+#define LOCAL_EGL_DMA_BUF_PLANE1_FD_EXT                      0x3275
+#define LOCAL_EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT             0x3446
+#define LOCAL_EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT             0x3445
+#define LOCAL_EGL_DMA_BUF_PLANE1_OFFSET_EXT                  0x3276
+#define LOCAL_EGL_DMA_BUF_PLANE1_PITCH_EXT                   0x3277
+#define LOCAL_EGL_DMA_BUF_PLANE2_FD_EXT                      0x3278
+#define LOCAL_EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT             0x3448
+#define LOCAL_EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT             0x3447
+#define LOCAL_EGL_DMA_BUF_PLANE2_OFFSET_EXT                  0x3279
+#define LOCAL_EGL_DMA_BUF_PLANE2_PITCH_EXT                   0x327A
+#define LOCAL_EGL_DMA_BUF_PLANE3_FD_EXT                      0x3440
+#define LOCAL_EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT             0x344A
+#define LOCAL_EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT             0x3449
+#define LOCAL_EGL_DMA_BUF_PLANE3_OFFSET_EXT                  0x3441
+#define LOCAL_EGL_DMA_BUF_PLANE3_PITCH_EXT                   0x3442
+#define LOCAL_EGL_DONT_CARE                                  EGL_CAST(EGLint,-1)
+#define LOCAL_EGL_DRAW                                       0x3059
+#define LOCAL_EGL_DRIVER_NAME_EXT                            0x335E
+#define LOCAL_EGL_DRIVER_UUID_EXT                            0x335D
+#define LOCAL_EGL_DRM_BUFFER_FORMAT_ARGB32_MESA              0x31D2
+#define LOCAL_EGL_DRM_BUFFER_FORMAT_MESA                     0x31D0
+#define LOCAL_EGL_DRM_BUFFER_MESA                            0x31D3
+#define LOCAL_EGL_DRM_BUFFER_STRIDE_MESA                     0x31D4
+#define LOCAL_EGL_DRM_BUFFER_USE_CURSOR_MESA                 0x00000004
+#define LOCAL_EGL_DRM_BUFFER_USE_MESA                        0x31D1
+#define LOCAL_EGL_DRM_BUFFER_USE_SCANOUT_MESA                0x00000001
+#define LOCAL_EGL_DRM_BUFFER_USE_SHARE_MESA                  0x00000002
+#define LOCAL_EGL_DRM_CONNECTOR_EXT                          0x3236
+#define LOCAL_EGL_DRM_CRTC_EXT                               0x3234
+#define LOCAL_EGL_DRM_DEVICE_FILE_EXT                        0x3233
+#define LOCAL_EGL_DRM_MASTER_FD_EXT                          0x333C
+#define LOCAL_EGL_DRM_PLANE_EXT                              0x3235
+#define LOCAL_EGL_DRM_RENDER_NODE_FILE_EXT                   0x3377
+#define LOCAL_EGL_EXTENSIONS                                 0x3055
+#define LOCAL_EGL_EXTERNAL_REF_ID_EXT                        0x3461
+#define LOCAL_EGL_FALSE                                      0
+#define LOCAL_EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID        0x3439
+#define LOCAL_EGL_FIRST_COMPOSITION_START_TIME_ANDROID       0x3437
+#define LOCAL_EGL_FIXED_SIZE_ANGLE                           0x3201
+#define LOCAL_EGL_FOREVER                                    0xFFFFFFFFFFFFFFFF
+#define LOCAL_EGL_FOREVER_KHR                                0xFFFFFFFFFFFFFFFF
+#define LOCAL_EGL_FOREVER_NV                                 0xFFFFFFFFFFFFFFFF
+#define LOCAL_EGL_FORMAT_ASTC_10X10_QCOM                     0x33ED
+#define LOCAL_EGL_FORMAT_ASTC_10X10_SRGB_QCOM                0x340B
+#define LOCAL_EGL_FORMAT_ASTC_10X5_QCOM                      0x33EA
+#define LOCAL_EGL_FORMAT_ASTC_10X5_SRGB_QCOM                 0x3408
+#define LOCAL_EGL_FORMAT_ASTC_10X6_QCOM                      0x33EB
+#define LOCAL_EGL_FORMAT_ASTC_10X6_SRGB_QCOM                 0x3409
+#define LOCAL_EGL_FORMAT_ASTC_10X8_QCOM                      0x33EC
+#define LOCAL_EGL_FORMAT_ASTC_10X8_SRGB_QCOM                 0x340A
+#define LOCAL_EGL_FORMAT_ASTC_12X10_QCOM                     0x33EE
+#define LOCAL_EGL_FORMAT_ASTC_12X10_SRGB_QCOM                0x340C
+#define LOCAL_EGL_FORMAT_ASTC_12X12_QCOM                     0x33EF
+#define LOCAL_EGL_FORMAT_ASTC_12X12_SRGB_QCOM                0x340D
+#define LOCAL_EGL_FORMAT_ASTC_4X4_QCOM                       0x33E2
+#define LOCAL_EGL_FORMAT_ASTC_4X4_SRGB_QCOM                  0x3400
+#define LOCAL_EGL_FORMAT_ASTC_5X4_QCOM                       0x33E3
+#define LOCAL_EGL_FORMAT_ASTC_5X4_SRGB_QCOM                  0x3401
+#define LOCAL_EGL_FORMAT_ASTC_5X5_QCOM                       0x33E4
+#define LOCAL_EGL_FORMAT_ASTC_5X5_SRGB_QCOM                  0x3402
+#define LOCAL_EGL_FORMAT_ASTC_6X5_QCOM                       0x33E5
+#define LOCAL_EGL_FORMAT_ASTC_6X5_SRGB_QCOM                  0x3403
+#define LOCAL_EGL_FORMAT_ASTC_6X6_QCOM                       0x33E6
+#define LOCAL_EGL_FORMAT_ASTC_6X6_SRGB_QCOM                  0x3404
+#define LOCAL_EGL_FORMAT_ASTC_8X5_QCOM                       0x33E7
+#define LOCAL_EGL_FORMAT_ASTC_8X5_SRGB_QCOM                  0x3405
+#define LOCAL_EGL_FORMAT_ASTC_8X6_QCOM                       0x33E8
+#define LOCAL_EGL_FORMAT_ASTC_8X6_SRGB_QCOM                  0x3406
+#define LOCAL_EGL_FORMAT_ASTC_8X8_QCOM                       0x33E9
+#define LOCAL_EGL_FORMAT_ASTC_8X8_SRGB_QCOM                  0x3407
+#define LOCAL_EGL_FORMAT_BGRA_8888_QCOM                      0x3129
+#define LOCAL_EGL_FORMAT_BGRX_8888_QCOM                      0x312A
+#define LOCAL_EGL_FORMAT_FLAG_MACROTILE_QCOM                 0x33E1
+#define LOCAL_EGL_FORMAT_FLAG_QCOM                           0x31CF
+#define LOCAL_EGL_FORMAT_FLAG_UBWC_QCOM                      0x33E0
+#define LOCAL_EGL_FORMAT_IYUV_QCOM                           0x31C7
+#define LOCAL_EGL_FORMAT_NV12_4R_QCOM                        0x3412
+#define LOCAL_EGL_FORMAT_NV12_4R_UV_QCOM                     0x3414
+#define LOCAL_EGL_FORMAT_NV12_4R_Y_QCOM                      0x3413
+#define LOCAL_EGL_FORMAT_NV12_QCOM                           0x31C2
+#define LOCAL_EGL_FORMAT_NV12_TILED_QCOM                     0x3128
+#define LOCAL_EGL_FORMAT_NV12_UV_QCOM                        0x3410
+#define LOCAL_EGL_FORMAT_NV12_Y_QCOM                         0x340F
+#define LOCAL_EGL_FORMAT_NV21_QCOM                           0x3127
+#define LOCAL_EGL_FORMAT_NV21_VU_QCOM                        0x3411
+#define LOCAL_EGL_FORMAT_P010_QCOM                           0x3415
+#define LOCAL_EGL_FORMAT_P010_UV_QCOM                        0x3417
+#define LOCAL_EGL_FORMAT_P010_Y_QCOM                         0x3416
+#define LOCAL_EGL_FORMAT_R8_QCOM                             0x31C0
+#define LOCAL_EGL_FORMAT_RG88_QCOM                           0x31C1
+#define LOCAL_EGL_FORMAT_RGBA_1010102_QCOM                   0x31CE
+#define LOCAL_EGL_FORMAT_RGBA_16_FLOAT_QCOM                  0x31CD
+#define LOCAL_EGL_FORMAT_RGBA_4444_QCOM                      0x31CA
+#define LOCAL_EGL_FORMAT_RGBA_5551_QCOM                      0x31C9
+#define LOCAL_EGL_FORMAT_RGBA_8888_EXACT_KHR                 0x30C2
+#define LOCAL_EGL_FORMAT_RGBA_8888_KHR                       0x30C3
+#define LOCAL_EGL_FORMAT_RGBA_8888_QCOM                      0x3122
+#define LOCAL_EGL_FORMAT_RGBX_8888_QCOM                      0x312F
+#define LOCAL_EGL_FORMAT_RGB_565_EXACT_KHR                   0x30C0
+#define LOCAL_EGL_FORMAT_RGB_565_KHR                         0x30C1
+#define LOCAL_EGL_FORMAT_RGB_565_QCOM                        0x3123
+#define LOCAL_EGL_FORMAT_RGB_888_QCOM                        0x31C8
+#define LOCAL_EGL_FORMAT_RG_1616_FLOAT_QCOM                  0x31CC
+#define LOCAL_EGL_FORMAT_R_16_FLOAT_QCOM                     0x31CB
+#define LOCAL_EGL_FORMAT_SRGBA_8888_QCOM                     0x31C4
+#define LOCAL_EGL_FORMAT_SRGBX_8888_QCOM                     0x31C3
+#define LOCAL_EGL_FORMAT_TP10_QCOM                           0x340E
+#define LOCAL_EGL_FORMAT_TP10_UV_QCOM                        0x3419
+#define LOCAL_EGL_FORMAT_TP10_Y_QCOM                         0x3418
+#define LOCAL_EGL_FORMAT_UYVY_QCOM                           0x3125
+#define LOCAL_EGL_FORMAT_VYUY_QCOM                           0x31C6
+#define LOCAL_EGL_FORMAT_YUYV_QCOM                           0x3124
+#define LOCAL_EGL_FORMAT_YV12_QCOM                           0x3126
+#define LOCAL_EGL_FORMAT_YVYU_QCOM                           0x31C5
+#define LOCAL_EGL_FRAMEBUFFER_TARGET_ANDROID                 0x3147
+#define LOCAL_EGL_FRONT_BUFFER_AUTO_REFRESH_ANDROID          0x314C
+#define LOCAL_EGL_FRONT_BUFFER_EXT                           0x3464
+#define LOCAL_EGL_GENERATE_RESET_ON_VIDEO_MEMORY_PURGE_NV    0x334C
+#define LOCAL_EGL_GENERIC_TOKEN_1_QCOM                       0x3420
+#define LOCAL_EGL_GENERIC_TOKEN_2_QCOM                       0x3421
+#define LOCAL_EGL_GENERIC_TOKEN_3_QCOM                       0x3422
+#define LOCAL_EGL_GL_COLORSPACE                              0x309D
+#define LOCAL_EGL_GL_COLORSPACE_BT2020_LINEAR_EXT            0x333F
+#define LOCAL_EGL_GL_COLORSPACE_BT2020_PQ_EXT                0x3340
+#define LOCAL_EGL_GL_COLORSPACE_DEFAULT_EXT                  0x314D
+#define LOCAL_EGL_GL_COLORSPACE_DISPLAY_P3_EXT               0x3363
+#define LOCAL_EGL_GL_COLORSPACE_DISPLAY_P3_LINEAR_EXT        0x3362
+#define LOCAL_EGL_GL_COLORSPACE_DISPLAY_P3_PASSTHROUGH_EXT   0x3490
+#define LOCAL_EGL_GL_COLORSPACE_KHR                          0x309D
+#define LOCAL_EGL_GL_COLORSPACE_LINEAR                       0x308A
+#define LOCAL_EGL_GL_COLORSPACE_LINEAR_KHR                   0x308A
+#define LOCAL_EGL_GL_COLORSPACE_SCRGB_EXT                    0x3351
+#define LOCAL_EGL_GL_COLORSPACE_SCRGB_LINEAR_EXT             0x3350
+#define LOCAL_EGL_GL_COLORSPACE_SRGB                         0x3089
+#define LOCAL_EGL_GL_COLORSPACE_SRGB_KHR                     0x3089
+#define LOCAL_EGL_GL_RENDERBUFFER                            0x30B9
+#define LOCAL_EGL_GL_RENDERBUFFER_KHR                        0x30B9
+#define LOCAL_EGL_GL_TEXTURE_2D                              0x30B1
+#define LOCAL_EGL_GL_TEXTURE_2D_KHR                          0x30B1
+#define LOCAL_EGL_GL_TEXTURE_3D                              0x30B2
+#define LOCAL_EGL_GL_TEXTURE_3D_KHR                          0x30B2
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X             0x30B4
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X_KHR         0x30B4
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y             0x30B6
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_KHR         0x30B6
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z             0x30B8
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR         0x30B8
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X             0x30B3
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR         0x30B3
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y             0x30B5
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y_KHR         0x30B5
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z             0x30B7
+#define LOCAL_EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z_KHR         0x30B7
+#define LOCAL_EGL_GL_TEXTURE_LEVEL                           0x30BC
+#define LOCAL_EGL_GL_TEXTURE_LEVEL_KHR                       0x30BC
+#define LOCAL_EGL_GL_TEXTURE_ZOFFSET                         0x30BD
+#define LOCAL_EGL_GL_TEXTURE_ZOFFSET_KHR                     0x30BD
+#define LOCAL_EGL_GPU_PERF_HINT_QCOM                         0x32D0
+#define LOCAL_EGL_GREEN_SIZE                                 0x3023
+#define LOCAL_EGL_HEIGHT                                     0x3056
+#define LOCAL_EGL_HINT_PERSISTENT_QCOM                       0x32D1
+#define LOCAL_EGL_HORIZONTAL_RESOLUTION                      0x3090
+#define LOCAL_EGL_IMAGE_FORMAT_QCOM                          0x3121
+#define LOCAL_EGL_IMAGE_NUM_PLANES_QCOM                      0x32B0
+#define LOCAL_EGL_IMAGE_PLANE_DEPTH_0_QCOM                   0x32B4
+#define LOCAL_EGL_IMAGE_PLANE_DEPTH_1_QCOM                   0x32B5
+#define LOCAL_EGL_IMAGE_PLANE_DEPTH_2_QCOM                   0x32B6
+#define LOCAL_EGL_IMAGE_PLANE_HEIGHT_0_QCOM                  0x32BA
+#define LOCAL_EGL_IMAGE_PLANE_HEIGHT_1_QCOM                  0x32BB
+#define LOCAL_EGL_IMAGE_PLANE_HEIGHT_2_QCOM                  0x32BC
+#define LOCAL_EGL_IMAGE_PLANE_PITCH_0_QCOM                   0x32B1
+#define LOCAL_EGL_IMAGE_PLANE_PITCH_1_QCOM                   0x32B2
+#define LOCAL_EGL_IMAGE_PLANE_PITCH_2_QCOM                   0x32B3
+#define LOCAL_EGL_IMAGE_PLANE_POINTER_0_QCOM                 0x32BD
+#define LOCAL_EGL_IMAGE_PLANE_POINTER_1_QCOM                 0x32BE
+#define LOCAL_EGL_IMAGE_PLANE_POINTER_2_QCOM                 0x32BF
+#define LOCAL_EGL_IMAGE_PLANE_WIDTH_0_QCOM                   0x32B7
+#define LOCAL_EGL_IMAGE_PLANE_WIDTH_1_QCOM                   0x32B8
+#define LOCAL_EGL_IMAGE_PLANE_WIDTH_2_QCOM                   0x32B9
+#define LOCAL_EGL_IMAGE_PRESERVED                            0x30D2
+#define LOCAL_EGL_IMAGE_PRESERVED_KHR                        0x30D2
+#define LOCAL_EGL_IMPORT_EXPLICIT_SYNC_EXT                   0x3472
+#define LOCAL_EGL_IMPORT_IMPLICIT_SYNC_EXT                   0x3471
+#define LOCAL_EGL_IMPORT_SYNC_TYPE_EXT                       0x3470
+#define LOCAL_EGL_INTEROP_BIT_KHR                            0x0010
+#define LOCAL_EGL_ITU_REC2020_EXT                            0x3281
+#define LOCAL_EGL_ITU_REC601_EXT                             0x327F
+#define LOCAL_EGL_ITU_REC709_EXT                             0x3280
+#define LOCAL_EGL_LARGEST_PBUFFER                            0x3058
+#define LOCAL_EGL_LAST_COMPOSITION_START_TIME_ANDROID        0x3438
+#define LOCAL_EGL_LEFT_NV                                    0x336B
+#define LOCAL_EGL_LEVEL                                      0x3029
+#define LOCAL_EGL_LINUX_DMA_BUF_EXT                          0x3270
+#define LOCAL_EGL_LINUX_DRM_FOURCC_EXT                       0x3271
+#define LOCAL_EGL_LOCK_SURFACE_BIT_KHR                       0x0080
+#define LOCAL_EGL_LOCK_USAGE_HINT_KHR                        0x30C5
+#define LOCAL_EGL_LOSE_CONTEXT_ON_RESET                      0x31BF
+#define LOCAL_EGL_LOSE_CONTEXT_ON_RESET_EXT                  0x31BF
+#define LOCAL_EGL_LOSE_CONTEXT_ON_RESET_KHR                  0x31BF
+#define LOCAL_EGL_LOWER_LEFT_KHR                             0x30CE
+#define LOCAL_EGL_LUMINANCE_BUFFER                           0x308F
+#define LOCAL_EGL_LUMINANCE_SIZE                             0x303D
+#define LOCAL_EGL_MAP_PRESERVE_PIXELS_KHR                    0x30C4
+#define LOCAL_EGL_MATCH_FORMAT_KHR                           0x3043
+#define LOCAL_EGL_MATCH_NATIVE_PIXMAP                        0x3041
+#define LOCAL_EGL_MAX_PBUFFER_HEIGHT                         0x302A
+#define LOCAL_EGL_MAX_PBUFFER_PIXELS                         0x302B
+#define LOCAL_EGL_MAX_PBUFFER_WIDTH                          0x302C
+#define LOCAL_EGL_MAX_STREAM_METADATA_BLOCKS_NV              0x3250
+#define LOCAL_EGL_MAX_STREAM_METADATA_BLOCK_SIZE_NV          0x3251
+#define LOCAL_EGL_MAX_STREAM_METADATA_TOTAL_SIZE_NV          0x3252
+#define LOCAL_EGL_MAX_SWAP_INTERVAL                          0x303C
+#define LOCAL_EGL_METADATA0_SIZE_NV                          0x3255
+#define LOCAL_EGL_METADATA0_TYPE_NV                          0x3259
+#define LOCAL_EGL_METADATA1_SIZE_NV                          0x3256
+#define LOCAL_EGL_METADATA1_TYPE_NV                          0x325A
+#define LOCAL_EGL_METADATA2_SIZE_NV                          0x3257
+#define LOCAL_EGL_METADATA2_TYPE_NV                          0x325B
+#define LOCAL_EGL_METADATA3_SIZE_NV                          0x3258
+#define LOCAL_EGL_METADATA3_TYPE_NV                          0x325C
+#define LOCAL_EGL_METADATA_SCALING_EXT                       50000
+#define LOCAL_EGL_MIN_SWAP_INTERVAL                          0x303B
+#define LOCAL_EGL_MIPMAP_LEVEL                               0x3083
+#define LOCAL_EGL_MIPMAP_TEXTURE                             0x3082
+#define LOCAL_EGL_MULTISAMPLE_RESOLVE                        0x3099
+#define LOCAL_EGL_MULTISAMPLE_RESOLVE_BOX                    0x309B
+#define LOCAL_EGL_MULTISAMPLE_RESOLVE_BOX_BIT                0x0200
+#define LOCAL_EGL_MULTISAMPLE_RESOLVE_DEFAULT                0x309A
+#define LOCAL_EGL_MULTIVIEW_VIEW_COUNT_EXT                   0x3134
+#define LOCAL_EGL_MUTABLE_RENDER_BUFFER_BIT_KHR              0x1000
+#define LOCAL_EGL_NATIVE_BUFFER_ANDROID                      0x3140
+#define LOCAL_EGL_NATIVE_BUFFER_MULTIPLANE_SEPARATE_IMG      0x3105
+#define LOCAL_EGL_NATIVE_BUFFER_PLANE_OFFSET_IMG             0x3106
+#define LOCAL_EGL_NATIVE_BUFFER_TIZEN                        0x32A0
+#define LOCAL_EGL_NATIVE_BUFFER_USAGE_ANDROID                0x3143
+#define LOCAL_EGL_NATIVE_BUFFER_USAGE_PROTECTED_BIT_ANDROID  0x00000001
+#define LOCAL_EGL_NATIVE_BUFFER_USAGE_RENDERBUFFER_BIT_ANDROID       0x00000002
+#define LOCAL_EGL_NATIVE_BUFFER_USAGE_TEXTURE_BIT_ANDROID    0x00000004
+#define LOCAL_EGL_NATIVE_PIXMAP_KHR                          0x30B0
+#define LOCAL_EGL_NATIVE_RENDERABLE                          0x302D
+#define LOCAL_EGL_NATIVE_SURFACE_TIZEN                       0x32A1
+#define LOCAL_EGL_NATIVE_VISUAL_ID                           0x302E
+#define LOCAL_EGL_NATIVE_VISUAL_TYPE                         0x302F
+#define LOCAL_EGL_NEW_IMAGE_QCOM                             0x3120
+#define LOCAL_EGL_NONE                                       0x3038
+#define LOCAL_EGL_NON_CONFORMANT_CONFIG                      0x3051
+#define LOCAL_EGL_NOT_INITIALIZED                            0x3001
+#define LOCAL_EGL_NO_CONFIG_KHR                              EGL_CAST(EGLConfig,0)
+#define LOCAL_EGL_NO_CONTEXT                                 EGL_CAST(EGLContext,0)
+#define LOCAL_EGL_NO_DEVICE_EXT                              EGL_CAST(EGLDeviceEXT,0)
+#define LOCAL_EGL_NO_DISPLAY                                 EGL_CAST(EGLDisplay,0)
+#define LOCAL_EGL_NO_FILE_DESCRIPTOR_KHR                     EGL_CAST(EGLNativeFileDescriptorKHR,-1)
+#define LOCAL_EGL_NO_IMAGE                                   EGL_CAST(EGLImage,0)
+#define LOCAL_EGL_NO_IMAGE_KHR                               EGL_CAST(EGLImageKHR,0)
+#define LOCAL_EGL_NO_NATIVE_FENCE_FD_ANDROID                 -1
+#define LOCAL_EGL_NO_OUTPUT_LAYER_EXT                        EGL_CAST(EGLOutputLayerEXT,0)
+#define LOCAL_EGL_NO_OUTPUT_PORT_EXT                         EGL_CAST(EGLOutputPortEXT,0)
+#define LOCAL_EGL_NO_RESET_NOTIFICATION                      0x31BE
+#define LOCAL_EGL_NO_RESET_NOTIFICATION_EXT                  0x31BE
+#define LOCAL_EGL_NO_RESET_NOTIFICATION_KHR                  0x31BE
+#define LOCAL_EGL_NO_STREAM_KHR                              EGL_CAST(EGLStreamKHR,0)
+#define LOCAL_EGL_NO_SURFACE                                 EGL_CAST(EGLSurface,0)
+#define LOCAL_EGL_NO_SYNC                                    EGL_CAST(EGLSync,0)
+#define LOCAL_EGL_NO_SYNC_KHR                                EGL_CAST(EGLSyncKHR,0)
+#define LOCAL_EGL_NO_SYNC_NV                                 EGL_CAST(EGLSyncNV,0)
+#define LOCAL_EGL_NO_TEXTURE                                 0x305C
+#define LOCAL_EGL_OBJECT_CONTEXT_KHR                         0x33B2
+#define LOCAL_EGL_OBJECT_DISPLAY_KHR                         0x33B1
+#define LOCAL_EGL_OBJECT_IMAGE_KHR                           0x33B4
+#define LOCAL_EGL_OBJECT_STREAM_KHR                          0x33B6
+#define LOCAL_EGL_OBJECT_SURFACE_KHR                         0x33B3
+#define LOCAL_EGL_OBJECT_SYNC_KHR                            0x33B5
+#define LOCAL_EGL_OBJECT_THREAD_KHR                          0x33B0
+#define LOCAL_EGL_OPENGL_API                                 0x30A2
+#define LOCAL_EGL_OPENGL_BIT                                 0x0008
+#define LOCAL_EGL_OPENGL_ES2_BIT                             0x0004
+#define LOCAL_EGL_OPENGL_ES3_BIT                             0x00000040
+#define LOCAL_EGL_OPENGL_ES3_BIT_KHR                         0x00000040
+#define LOCAL_EGL_OPENGL_ES_API                              0x30A0
+#define LOCAL_EGL_OPENGL_ES_BIT                              0x0001
+#define LOCAL_EGL_OPENMAX_IL_BIT_KHR                         0x0020
+#define LOCAL_EGL_OPENVG_API                                 0x30A1
+#define LOCAL_EGL_OPENVG_BIT                                 0x0002
+#define LOCAL_EGL_OPENVG_IMAGE                               0x3096
+#define LOCAL_EGL_OPENWF_DEVICE_ID_EXT                       0x3237
+#define LOCAL_EGL_OPENWF_PIPELINE_ID_EXT                     0x3238
+#define LOCAL_EGL_OPENWF_PORT_ID_EXT                         0x3239
+#define LOCAL_EGL_OPTIMAL_FORMAT_BIT_KHR                     0x0100
+#define LOCAL_EGL_PBUFFER_BIT                                0x0001
+#define LOCAL_EGL_PBUFFER_IMAGE_BIT_TAO                      0x0008
+#define LOCAL_EGL_PBUFFER_PALETTE_IMAGE_BIT_TAO              0x0010
+#define LOCAL_EGL_PENDING_FRAME_NV                           0x3329
+#define LOCAL_EGL_PENDING_METADATA_NV                        0x3328
+#define LOCAL_EGL_PIXEL_ASPECT_RATIO                         0x3092
+#define LOCAL_EGL_PIXMAP_BIT                                 0x0002
+#define LOCAL_EGL_PLATFORM_ANDROID_KHR                       0x3141
+#define LOCAL_EGL_PLATFORM_DEVICE_EXT                        0x313F
+#define LOCAL_EGL_PLATFORM_GBM_KHR                           0x31D7
+#define LOCAL_EGL_PLATFORM_GBM_MESA                          0x31D7
+#define LOCAL_EGL_PLATFORM_SURFACELESS_MESA                  0x31DD
+#define LOCAL_EGL_PLATFORM_WAYLAND_EXT                       0x31D8
+#define LOCAL_EGL_PLATFORM_WAYLAND_KHR                       0x31D8
+#define LOCAL_EGL_PLATFORM_X11_EXT                           0x31D5
+#define LOCAL_EGL_PLATFORM_X11_KHR                           0x31D5
+#define LOCAL_EGL_PLATFORM_X11_SCREEN_EXT                    0x31D6
+#define LOCAL_EGL_PLATFORM_X11_SCREEN_KHR                    0x31D6
+#define LOCAL_EGL_PLATFORM_XCB_EXT                           0x31DC
+#define LOCAL_EGL_PLATFORM_XCB_SCREEN_EXT                    0x31DE
+#define LOCAL_EGL_POST_SUB_BUFFER_SUPPORTED_NV               0x30BE
+#define LOCAL_EGL_PRIMARY_COMPOSITOR_CONTEXT_EXT             0x3460
+#define LOCAL_EGL_PRODUCER_AUTO_ORIENTATION_NV               0x336A
+#define LOCAL_EGL_PRODUCER_FRAME_KHR                         0x3212
+#define LOCAL_EGL_PRODUCER_MAX_FRAME_HINT_NV                 0x3337
+#define LOCAL_EGL_PRODUCER_METADATA_NV                       0x3253
+#define LOCAL_EGL_PROTECTED_CONTENT_EXT                      0x32C0
+#define LOCAL_EGL_QUADRUPLE_BUFFER_NV                        0x3231
+#define LOCAL_EGL_READ                                       0x305A
+#define LOCAL_EGL_READS_DONE_TIME_ANDROID                    0x343C
+#define LOCAL_EGL_READ_SURFACE_BIT_KHR                       0x0001
+#define LOCAL_EGL_RECORDABLE_ANDROID                         0x3142
+#define LOCAL_EGL_RED_SIZE                                   0x3024
+#define LOCAL_EGL_RENDERABLE_TYPE                            0x3040
+#define LOCAL_EGL_RENDERER_EXT                               0x335F
+#define LOCAL_EGL_RENDERING_COMPLETE_TIME_ANDROID            0x3435
+#define LOCAL_EGL_RENDER_BUFFER                              0x3086
+#define LOCAL_EGL_REQUESTED_PRESENT_TIME_ANDROID             0x3434
+#define LOCAL_EGL_RGB_BUFFER                                 0x308E
+#define LOCAL_EGL_RIGHT_NV                                   0x336C
+#define LOCAL_EGL_SAMPLES                                    0x3031
+#define LOCAL_EGL_SAMPLE_BUFFERS                             0x3032
+#define LOCAL_EGL_SAMPLE_RANGE_HINT_EXT                      0x327C
+#define LOCAL_EGL_SHARED_IMAGE_NOK                           0x30DA
+#define LOCAL_EGL_SIGNALED                                   0x30F2
+#define LOCAL_EGL_SIGNALED_KHR                               0x30F2
+#define LOCAL_EGL_SIGNALED_NV                                0x30E8
+#define LOCAL_EGL_SINGLE_BUFFER                              0x3085
+#define LOCAL_EGL_SLOW_CONFIG                                0x3050
+#define LOCAL_EGL_SMPTE2086_DISPLAY_PRIMARY_BX_EXT           0x3345
+#define LOCAL_EGL_SMPTE2086_DISPLAY_PRIMARY_BY_EXT           0x3346
+#define LOCAL_EGL_SMPTE2086_DISPLAY_PRIMARY_GX_EXT           0x3343
+#define LOCAL_EGL_SMPTE2086_DISPLAY_PRIMARY_GY_EXT           0x3344
+#define LOCAL_EGL_SMPTE2086_DISPLAY_PRIMARY_RX_EXT           0x3341
+#define LOCAL_EGL_SMPTE2086_DISPLAY_PRIMARY_RY_EXT           0x3342
+#define LOCAL_EGL_SMPTE2086_MAX_LUMINANCE_EXT                0x3349
+#define LOCAL_EGL_SMPTE2086_MIN_LUMINANCE_EXT                0x334A
+#define LOCAL_EGL_SMPTE2086_WHITE_POINT_X_EXT                0x3347
+#define LOCAL_EGL_SMPTE2086_WHITE_POINT_Y_EXT                0x3348
+#define LOCAL_EGL_SOCKET_HANDLE_NV                           0x324C
+#define LOCAL_EGL_SOCKET_TYPE_INET_NV                        0x324F
+#define LOCAL_EGL_SOCKET_TYPE_NV                             0x324D
+#define LOCAL_EGL_SOCKET_TYPE_UNIX_NV                        0x324E
+#define LOCAL_EGL_STENCIL_SIZE                               0x3026
+#define LOCAL_EGL_STREAM_BIT_KHR                             0x0800
+#define LOCAL_EGL_STREAM_CONSUMER_IMAGE_NV                   0x3373
+#define LOCAL_EGL_STREAM_CONSUMER_NV                         0x3248
+#define LOCAL_EGL_STREAM_CROSS_DISPLAY_NV                    0x334E
+#define LOCAL_EGL_STREAM_CROSS_OBJECT_NV                     0x334D
+#define LOCAL_EGL_STREAM_CROSS_PARTITION_NV                  0x323F
+#define LOCAL_EGL_STREAM_CROSS_PROCESS_NV                    0x3245
+#define LOCAL_EGL_STREAM_CROSS_SYSTEM_NV                     0x334F
+#define LOCAL_EGL_STREAM_DMA_NV                              0x3371
+#define LOCAL_EGL_STREAM_DMA_SERVER_NV                       0x3372
+#define LOCAL_EGL_STREAM_ENDPOINT_NV                         0x3243
+#define LOCAL_EGL_STREAM_FIFO_LENGTH_KHR                     0x31FC
+#define LOCAL_EGL_STREAM_FIFO_SYNCHRONOUS_NV                 0x3336
+#define LOCAL_EGL_STREAM_FRAME_MAJOR_AXIS_NV                 0x3368
+#define LOCAL_EGL_STREAM_FRAME_ORIGIN_X_NV                   0x3366
+#define LOCAL_EGL_STREAM_FRAME_ORIGIN_Y_NV                   0x3367
+#define LOCAL_EGL_STREAM_IMAGE_ADD_NV                        0x3374
+#define LOCAL_EGL_STREAM_IMAGE_AVAILABLE_NV                  0x3376
+#define LOCAL_EGL_STREAM_IMAGE_REMOVE_NV                     0x3375
+#define LOCAL_EGL_STREAM_LOCAL_NV                            0x3244
+#define LOCAL_EGL_STREAM_PRODUCER_NV                         0x3247
+#define LOCAL_EGL_STREAM_PROTOCOL_FD_NV                      0x3246
+#define LOCAL_EGL_STREAM_PROTOCOL_NV                         0x3242
+#define LOCAL_EGL_STREAM_PROTOCOL_SOCKET_NV                  0x324B
+#define LOCAL_EGL_STREAM_STATE_CONNECTING_KHR                0x3216
+#define LOCAL_EGL_STREAM_STATE_CREATED_KHR                   0x3215
+#define LOCAL_EGL_STREAM_STATE_DISCONNECTED_KHR              0x321A
+#define LOCAL_EGL_STREAM_STATE_EMPTY_KHR                     0x3217
+#define LOCAL_EGL_STREAM_STATE_INITIALIZING_NV               0x3240
+#define LOCAL_EGL_STREAM_STATE_KHR                           0x3214
+#define LOCAL_EGL_STREAM_STATE_NEW_FRAME_AVAILABLE_KHR       0x3218
+#define LOCAL_EGL_STREAM_STATE_OLD_FRAME_AVAILABLE_KHR       0x3219
+#define LOCAL_EGL_STREAM_TIME_CONSUMER_KHR                   0x31FE
+#define LOCAL_EGL_STREAM_TIME_NOW_KHR                        0x31FD
+#define LOCAL_EGL_STREAM_TIME_PENDING_NV                     0x332A
+#define LOCAL_EGL_STREAM_TIME_PRODUCER_KHR                   0x31FF
+#define LOCAL_EGL_STREAM_TYPE_NV                             0x3241
+#define LOCAL_EGL_SUCCESS                                    0x3000
+#define LOCAL_EGL_SUPPORT_RESET_NV                           0x3334
+#define LOCAL_EGL_SUPPORT_REUSE_NV                           0x3335
+#define LOCAL_EGL_SURFACE_TYPE                               0x3033
+#define LOCAL_EGL_SWAP_BEHAVIOR                              0x3093
+#define LOCAL_EGL_SWAP_BEHAVIOR_PRESERVED_BIT                0x0400
+#define LOCAL_EGL_SWAP_INTERVAL_EXT                          0x322F
+#define LOCAL_EGL_SYNC_CLIENT_EXT                            0x3364
+#define LOCAL_EGL_SYNC_CLIENT_SIGNAL_EXT                     0x3365
+#define LOCAL_EGL_SYNC_CL_EVENT                              0x30FE
+#define LOCAL_EGL_SYNC_CL_EVENT_COMPLETE                     0x30FF
+#define LOCAL_EGL_SYNC_CL_EVENT_COMPLETE_KHR                 0x30FF
+#define LOCAL_EGL_SYNC_CL_EVENT_KHR                          0x30FE
+#define LOCAL_EGL_SYNC_CONDITION                             0x30F8
+#define LOCAL_EGL_SYNC_CONDITION_KHR                         0x30F8
+#define LOCAL_EGL_SYNC_CONDITION_NV                          0x30EE
+#define LOCAL_EGL_SYNC_CUDA_EVENT_COMPLETE_NV                0x323D
+#define LOCAL_EGL_SYNC_CUDA_EVENT_NV                         0x323C
+#define LOCAL_EGL_SYNC_FENCE                                 0x30F9
+#define LOCAL_EGL_SYNC_FENCE_KHR                             0x30F9
+#define LOCAL_EGL_SYNC_FENCE_NV                              0x30EF
+#define LOCAL_EGL_SYNC_FLUSH_COMMANDS_BIT                    0x0001
+#define LOCAL_EGL_SYNC_FLUSH_COMMANDS_BIT_KHR                0x0001
+#define LOCAL_EGL_SYNC_FLUSH_COMMANDS_BIT_NV                 0x0001
+#define LOCAL_EGL_SYNC_NATIVE_FENCE_ANDROID                  0x3144
+#define LOCAL_EGL_SYNC_NATIVE_FENCE_FD_ANDROID               0x3145
+#define LOCAL_EGL_SYNC_NATIVE_FENCE_SIGNALED_ANDROID         0x3146
+#define LOCAL_EGL_SYNC_NEW_FRAME_NV                          0x321F
+#define LOCAL_EGL_SYNC_PRIOR_COMMANDS_COMPLETE               0x30F0
+#define LOCAL_EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR           0x30F0
+#define LOCAL_EGL_SYNC_PRIOR_COMMANDS_COMPLETE_NV            0x30E6
+#define LOCAL_EGL_SYNC_PRIOR_COMMANDS_IMPLICIT_EXTERNAL_ARM  0x328A
+#define LOCAL_EGL_SYNC_REUSABLE_KHR                          0x30FA
+#define LOCAL_EGL_SYNC_STATUS                                0x30F1
+#define LOCAL_EGL_SYNC_STATUS_KHR                            0x30F1
+#define LOCAL_EGL_SYNC_STATUS_NV                             0x30E7
+#define LOCAL_EGL_SYNC_TYPE                                  0x30F7
+#define LOCAL_EGL_SYNC_TYPE_KHR                              0x30F7
+#define LOCAL_EGL_SYNC_TYPE_NV                               0x30ED
+#define LOCAL_EGL_TEXTURE_2D                                 0x305F
+#define LOCAL_EGL_TEXTURE_EXTERNAL_WL                        0x31DA
+#define LOCAL_EGL_TEXTURE_FORMAT                             0x3080
+#define LOCAL_EGL_TEXTURE_RGB                                0x305D
+#define LOCAL_EGL_TEXTURE_RGBA                               0x305E
+#define LOCAL_EGL_TEXTURE_TARGET                             0x3081
+#define LOCAL_EGL_TEXTURE_Y_UV_WL                            0x31D8
+#define LOCAL_EGL_TEXTURE_Y_U_V_WL                           0x31D7
+#define LOCAL_EGL_TEXTURE_Y_XUXV_WL                          0x31D9
+#define LOCAL_EGL_TIMEOUT_EXPIRED                            0x30F5
+#define LOCAL_EGL_TIMEOUT_EXPIRED_KHR                        0x30F5
+#define LOCAL_EGL_TIMEOUT_EXPIRED_NV                         0x30EB
+#define LOCAL_EGL_TIMESTAMPS_ANDROID                         0x3430
+#define LOCAL_EGL_TIMESTAMP_INVALID_ANDROID                  EGL_CAST(EGLnsecsANDROID,-1)
+#define LOCAL_EGL_TIMESTAMP_PENDING_ANDROID                  EGL_CAST(EGLnsecsANDROID,-2)
+#define LOCAL_EGL_TOP_NV                                     0x336D
+#define LOCAL_EGL_TRACK_REFERENCES_KHR                       0x3352
+#define LOCAL_EGL_TRANSPARENT_BLUE_VALUE                     0x3035
+#define LOCAL_EGL_TRANSPARENT_GREEN_VALUE                    0x3036
+#define LOCAL_EGL_TRANSPARENT_RED_VALUE                      0x3037
+#define LOCAL_EGL_TRANSPARENT_RGB                            0x3052
+#define LOCAL_EGL_TRANSPARENT_TYPE                           0x3034
+#define LOCAL_EGL_TRIPLE_BUFFER_NV                           0x3230
+#define LOCAL_EGL_TRUE                                       1
+#define LOCAL_EGL_UNKNOWN                                    EGL_CAST(EGLint,-1)
+#define LOCAL_EGL_UNSIGNALED                                 0x30F3
+#define LOCAL_EGL_UNSIGNALED_KHR                             0x30F3
+#define LOCAL_EGL_UNSIGNALED_NV                              0x30E9
+#define LOCAL_EGL_UPPER_LEFT_KHR                             0x30CF
+#define LOCAL_EGL_VENDOR                                     0x3053
+#define LOCAL_EGL_VERSION                                    0x3054
+#define LOCAL_EGL_VERTICAL_RESOLUTION                        0x3091
+#define LOCAL_EGL_VG_ALPHA_FORMAT                            0x3088
+#define LOCAL_EGL_VG_ALPHA_FORMAT_NONPRE                     0x308B
+#define LOCAL_EGL_VG_ALPHA_FORMAT_PRE                        0x308C
+#define LOCAL_EGL_VG_ALPHA_FORMAT_PRE_BIT                    0x0040
+#define LOCAL_EGL_VG_ALPHA_FORMAT_PRE_BIT_KHR                0x0040
+#define LOCAL_EGL_VG_COLORSPACE                              0x3087
+#define LOCAL_EGL_VG_COLORSPACE_LINEAR                       0x308A
+#define LOCAL_EGL_VG_COLORSPACE_LINEAR_BIT                   0x0020
+#define LOCAL_EGL_VG_COLORSPACE_LINEAR_BIT_KHR               0x0020
+#define LOCAL_EGL_VG_COLORSPACE_sRGB                         0x3089
+#define LOCAL_EGL_VG_PARENT_IMAGE_KHR                        0x30BA
+#define LOCAL_EGL_WAYLAND_BUFFER_WL                          0x31D5
+#define LOCAL_EGL_WAYLAND_PLANE_WL                           0x31D6
+#define LOCAL_EGL_WAYLAND_Y_INVERTED_WL                      0x31DB
+#define LOCAL_EGL_WIDTH                                      0x3057
+#define LOCAL_EGL_WINDOW_BIT                                 0x0004
+#define LOCAL_EGL_WRITE_SURFACE_BIT_KHR                      0x0002
+#define LOCAL_EGL_X_AXIS_NV                                  0x336F
+#define LOCAL_EGL_YUV_BUFFER_EXT                             0x3300
+#define LOCAL_EGL_YUV_CHROMA_HORIZONTAL_SITING_HINT_EXT      0x327D
+#define LOCAL_EGL_YUV_CHROMA_SITING_0_5_EXT                  0x3285
+#define LOCAL_EGL_YUV_CHROMA_SITING_0_EXT                    0x3284
+#define LOCAL_EGL_YUV_CHROMA_VERTICAL_SITING_HINT_EXT        0x327E
+#define LOCAL_EGL_YUV_COLOR_SPACE_HINT_EXT                   0x327B
+#define LOCAL_EGL_YUV_CSC_STANDARD_2020_EXT                  0x330D
+#define LOCAL_EGL_YUV_CSC_STANDARD_601_EXT                   0x330B
+#define LOCAL_EGL_YUV_CSC_STANDARD_709_EXT                   0x330C
+#define LOCAL_EGL_YUV_CSC_STANDARD_EXT                       0x330A
+#define LOCAL_EGL_YUV_DEPTH_RANGE_EXT                        0x3317
+#define LOCAL_EGL_YUV_DEPTH_RANGE_FULL_EXT                   0x3319
+#define LOCAL_EGL_YUV_DEPTH_RANGE_LIMITED_EXT                0x3318
+#define LOCAL_EGL_YUV_FULL_RANGE_EXT                         0x3282
+#define LOCAL_EGL_YUV_NARROW_RANGE_EXT                       0x3283
+#define LOCAL_EGL_YUV_NUMBER_OF_PLANES_EXT                   0x3311
+#define LOCAL_EGL_YUV_ORDER_AYUV_EXT                         0x3308
+#define LOCAL_EGL_YUV_ORDER_EXT                              0x3301
+#define LOCAL_EGL_YUV_ORDER_UYVY_EXT                         0x3305
+#define LOCAL_EGL_YUV_ORDER_VYUY_EXT                         0x3307
+#define LOCAL_EGL_YUV_ORDER_YUV_EXT                          0x3302
+#define LOCAL_EGL_YUV_ORDER_YUYV_EXT                         0x3304
+#define LOCAL_EGL_YUV_ORDER_YVU_EXT                          0x3303
+#define LOCAL_EGL_YUV_ORDER_YVYU_EXT                         0x3306
+#define LOCAL_EGL_YUV_PLANE0_TEXTURE_UNIT_NV                 0x332C
+#define LOCAL_EGL_YUV_PLANE1_TEXTURE_UNIT_NV                 0x332D
+#define LOCAL_EGL_YUV_PLANE2_TEXTURE_UNIT_NV                 0x332E
+#define LOCAL_EGL_YUV_PLANE_BPP_0_EXT                        0x331B
+#define LOCAL_EGL_YUV_PLANE_BPP_10_EXT                       0x331D
+#define LOCAL_EGL_YUV_PLANE_BPP_8_EXT                        0x331C
+#define LOCAL_EGL_YUV_PLANE_BPP_EXT                          0x331A
+#define LOCAL_EGL_YUV_SUBSAMPLE_4_2_0_EXT                    0x3313
+#define LOCAL_EGL_YUV_SUBSAMPLE_4_2_2_EXT                    0x3314
+#define LOCAL_EGL_YUV_SUBSAMPLE_4_4_4_EXT                    0x3315
+#define LOCAL_EGL_YUV_SUBSAMPLE_EXT                          0x3312
+#define LOCAL_EGL_Y_AXIS_NV                                  0x3370
+#define LOCAL_EGL_Y_INVERTED_NOK                             0x307F
+
+// GLX
+#define LOCAL_GLX_3DFX_FULLSCREEN_MODE_MESA                  0x2
+#define LOCAL_GLX_3DFX_WINDOW_MODE_MESA                      0x1
+#define LOCAL_GLX_ACCUM_ALPHA_SIZE                           17
+#define LOCAL_GLX_ACCUM_BLUE_SIZE                            16
+#define LOCAL_GLX_ACCUM_BUFFER_BIT                           0x00000080
+#define LOCAL_GLX_ACCUM_BUFFER_BIT_SGIX                      0x00000080
+#define LOCAL_GLX_ACCUM_GREEN_SIZE                           15
+#define LOCAL_GLX_ACCUM_RED_SIZE                             14
+#define LOCAL_GLX_ALPHA_SIZE                                 11
+#define LOCAL_GLX_AUX0_EXT                                   0x20E2
+#define LOCAL_GLX_AUX1_EXT                                   0x20E3
+#define LOCAL_GLX_AUX2_EXT                                   0x20E4
+#define LOCAL_GLX_AUX3_EXT                                   0x20E5
+#define LOCAL_GLX_AUX4_EXT                                   0x20E6
+#define LOCAL_GLX_AUX5_EXT                                   0x20E7
+#define LOCAL_GLX_AUX6_EXT                                   0x20E8
+#define LOCAL_GLX_AUX7_EXT                                   0x20E9
+#define LOCAL_GLX_AUX8_EXT                                   0x20EA
+#define LOCAL_GLX_AUX9_EXT                                   0x20EB
+#define LOCAL_GLX_AUX_BUFFERS                                7
+#define LOCAL_GLX_AUX_BUFFERS_BIT                            0x00000010
+#define LOCAL_GLX_AUX_BUFFERS_BIT_SGIX                       0x00000010
+#define LOCAL_GLX_BACK_BUFFER_AGE_EXT                        0x20F4
+#define LOCAL_GLX_BACK_EXT                                   0x20E0
+#define LOCAL_GLX_BACK_LEFT_BUFFER_BIT                       0x00000004
+#define LOCAL_GLX_BACK_LEFT_BUFFER_BIT_SGIX                  0x00000004
+#define LOCAL_GLX_BACK_LEFT_EXT                              0x20E0
+#define LOCAL_GLX_BACK_RIGHT_BUFFER_BIT                      0x00000008
+#define LOCAL_GLX_BACK_RIGHT_BUFFER_BIT_SGIX                 0x00000008
+#define LOCAL_GLX_BACK_RIGHT_EXT                             0x20E1
+#define LOCAL_GLX_BAD_ATTRIBUTE                              2
+#define LOCAL_GLX_BAD_CONTEXT                                5
+#define LOCAL_GLX_BAD_ENUM                                   7
+#define LOCAL_GLX_BAD_HYPERPIPE_CONFIG_SGIX                  91
+#define LOCAL_GLX_BAD_HYPERPIPE_SGIX                         92
+#define LOCAL_GLX_BAD_SCREEN                                 1
+#define LOCAL_GLX_BAD_VALUE                                  6
+#define LOCAL_GLX_BAD_VISUAL                                 4
+#define LOCAL_GLX_BIND_TO_MIPMAP_TEXTURE_EXT                 0x20D2
+#define LOCAL_GLX_BIND_TO_TEXTURE_RGBA_EXT                   0x20D1
+#define LOCAL_GLX_BIND_TO_TEXTURE_RGB_EXT                    0x20D0
+#define LOCAL_GLX_BIND_TO_TEXTURE_TARGETS_EXT                0x20D3
+#define LOCAL_GLX_BLENDED_RGBA_SGIS                          0x8025
+#define LOCAL_GLX_BLUE_SIZE                                  10
+#define LOCAL_GLX_BUFFER_CLOBBER_MASK_SGIX                   0x08000000
+#define LOCAL_GLX_BUFFER_SIZE                                2
+#define LOCAL_GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK            0x04000000
+#define LOCAL_GLX_BufferSwapComplete                         1
+#define LOCAL_GLX_COLOR_INDEX_BIT                            0x00000002
+#define LOCAL_GLX_COLOR_INDEX_BIT_SGIX                       0x00000002
+#define LOCAL_GLX_COLOR_INDEX_TYPE                           0x8015
+#define LOCAL_GLX_COLOR_INDEX_TYPE_SGIX                      0x8015
+#define LOCAL_GLX_COLOR_SAMPLES_NV                           0x20B3
+#define LOCAL_GLX_CONFIG_CAVEAT                              0x20
+#define LOCAL_GLX_CONTEXT_ALLOW_BUFFER_BYTE_ORDER_MISMATCH_ARB       0x2095
+#define LOCAL_GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB      0x00000002
+#define LOCAL_GLX_CONTEXT_CORE_PROFILE_BIT_ARB               0x00000001
+#define LOCAL_GLX_CONTEXT_DEBUG_BIT_ARB                      0x00000001
+#define LOCAL_GLX_CONTEXT_ES2_PROFILE_BIT_EXT                0x00000004
+#define LOCAL_GLX_CONTEXT_ES_PROFILE_BIT_EXT                 0x00000004
+#define LOCAL_GLX_CONTEXT_FLAGS_ARB                          0x2094
+#define LOCAL_GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB         0x00000002
+#define LOCAL_GLX_CONTEXT_MAJOR_VERSION_ARB                  0x2091
+#define LOCAL_GLX_CONTEXT_MINOR_VERSION_ARB                  0x2092
+#define LOCAL_GLX_CONTEXT_MULTIGPU_ATTRIB_AFR_NV             0x20AC
+#define LOCAL_GLX_CONTEXT_MULTIGPU_ATTRIB_MULTICAST_NV       0x20AD
+#define LOCAL_GLX_CONTEXT_MULTIGPU_ATTRIB_MULTI_DISPLAY_MULTICAST_NV 0x20AE
+#define LOCAL_GLX_CONTEXT_MULTIGPU_ATTRIB_NV                 0x20AA
+#define LOCAL_GLX_CONTEXT_MULTIGPU_ATTRIB_SINGLE_NV          0x20AB
+#define LOCAL_GLX_CONTEXT_OPENGL_NO_ERROR_ARB                0x31B3
+#define LOCAL_GLX_CONTEXT_PRIORITY_HIGH_EXT                  0x3101
+#define LOCAL_GLX_CONTEXT_PRIORITY_LEVEL_EXT                 0x3100
+#define LOCAL_GLX_CONTEXT_PRIORITY_LOW_EXT                   0x3103
+#define LOCAL_GLX_CONTEXT_PRIORITY_MEDIUM_EXT                0x3102
+#define LOCAL_GLX_CONTEXT_PROFILE_MASK_ARB                   0x9126
+#define LOCAL_GLX_CONTEXT_RELEASE_BEHAVIOR_ARB               0x2097
+#define LOCAL_GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB         0x2098
+#define LOCAL_GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB          0
+#define LOCAL_GLX_CONTEXT_RESET_ISOLATION_BIT_ARB            0x00000008
+#define LOCAL_GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB    0x8256
+#define LOCAL_GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB              0x00000004
+#define LOCAL_GLX_COPY_COMPLETE_INTEL                        0x8181
+#define LOCAL_GLX_COVERAGE_SAMPLES_NV                        100001
+#define LOCAL_GLX_DAMAGED                                    0x8020
+#define LOCAL_GLX_DAMAGED_SGIX                               0x8020
+#define LOCAL_GLX_DEPTH_BUFFER_BIT                           0x00000020
+#define LOCAL_GLX_DEPTH_BUFFER_BIT_SGIX                      0x00000020
+#define LOCAL_GLX_DEPTH_SIZE                                 12
+#define LOCAL_GLX_DEVICE_ID_NV                               0x20CD
+#define LOCAL_GLX_DIGITAL_MEDIA_PBUFFER_SGIX                 0x8024
+#define LOCAL_GLX_DIRECT_COLOR                               0x8003
+#define LOCAL_GLX_DIRECT_COLOR_EXT                           0x8003
+#define LOCAL_GLX_DONT_CARE                                  0xFFFFFFFF
+#define LOCAL_GLX_DOUBLEBUFFER                               5
+#define LOCAL_GLX_DRAWABLE_TYPE                              0x8010
+#define LOCAL_GLX_DRAWABLE_TYPE_SGIX                         0x8010
+#define LOCAL_GLX_EVENT_MASK                                 0x801F
+#define LOCAL_GLX_EVENT_MASK_SGIX                            0x801F
+#define LOCAL_GLX_EXCHANGE_COMPLETE_INTEL                    0x8180
+#define LOCAL_GLX_EXTENSIONS                                 0x3
+#define LOCAL_GLX_EXTENSION_NAME                             "GLX"
+#define LOCAL_GLX_FBCONFIG_ID                                0x8013
+#define LOCAL_GLX_FBCONFIG_ID_SGIX                           0x8013
+#define LOCAL_GLX_FLIP_COMPLETE_INTEL                        0x8182
+#define LOCAL_GLX_FLOAT_COMPONENTS_NV                        0x20B0
+#define LOCAL_GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB               0x20B2
+#define LOCAL_GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT               0x20B2
+#define LOCAL_GLX_FRONT_EXT                                  0x20DE
+#define LOCAL_GLX_FRONT_LEFT_BUFFER_BIT                      0x00000001
+#define LOCAL_GLX_FRONT_LEFT_BUFFER_BIT_SGIX                 0x00000001
+#define LOCAL_GLX_FRONT_LEFT_EXT                             0x20DE
+#define LOCAL_GLX_FRONT_RIGHT_BUFFER_BIT                     0x00000002
+#define LOCAL_GLX_FRONT_RIGHT_BUFFER_BIT_SGIX                0x00000002
+#define LOCAL_GLX_FRONT_RIGHT_EXT                            0x20DF
+#define LOCAL_GLX_GENERATE_RESET_ON_VIDEO_MEMORY_PURGE_NV    0x20F7
+#define LOCAL_GLX_GPU_CLOCK_AMD                              0x21A4
+#define LOCAL_GLX_GPU_FASTEST_TARGET_GPUS_AMD                0x21A2
+#define LOCAL_GLX_GPU_NUM_PIPES_AMD                          0x21A5
+#define LOCAL_GLX_GPU_NUM_RB_AMD                             0x21A7
+#define LOCAL_GLX_GPU_NUM_SIMD_AMD                           0x21A6
+#define LOCAL_GLX_GPU_NUM_SPI_AMD                            0x21A8
+#define LOCAL_GLX_GPU_OPENGL_VERSION_STRING_AMD              0x1F02
+#define LOCAL_GLX_GPU_RAM_AMD                                0x21A3
+#define LOCAL_GLX_GPU_RENDERER_STRING_AMD                    0x1F01
+#define LOCAL_GLX_GPU_VENDOR_AMD                             0x1F00
+#define LOCAL_GLX_GRAY_SCALE                                 0x8006
+#define LOCAL_GLX_GRAY_SCALE_EXT                             0x8006
+#define LOCAL_GLX_GREEN_SIZE                                 9
+#define LOCAL_GLX_HEIGHT                                     0x801E
+#define LOCAL_GLX_HEIGHT_SGIX                                0x801E
+#define LOCAL_GLX_HYPERPIPE_DISPLAY_PIPE_SGIX                0x00000001
+#define LOCAL_GLX_HYPERPIPE_ID_SGIX                          0x8030
+#define LOCAL_GLX_HYPERPIPE_PIPE_NAME_LENGTH_SGIX            80
+#define LOCAL_GLX_HYPERPIPE_PIXEL_AVERAGE_SGIX               0x00000004
+#define LOCAL_GLX_HYPERPIPE_RENDER_PIPE_SGIX                 0x00000002
+#define LOCAL_GLX_HYPERPIPE_STEREO_SGIX                      0x00000003
+#define LOCAL_GLX_LARGEST_PBUFFER                            0x801C
+#define LOCAL_GLX_LARGEST_PBUFFER_SGIX                       0x801C
+#define LOCAL_GLX_LATE_SWAPS_TEAR_EXT                        0x20F3
+#define LOCAL_GLX_LEVEL                                      3
+#define LOCAL_GLX_LOSE_CONTEXT_ON_RESET_ARB                  0x8252
+#define LOCAL_GLX_MAX_PBUFFER_HEIGHT                         0x8017
+#define LOCAL_GLX_MAX_PBUFFER_HEIGHT_SGIX                    0x8017
+#define LOCAL_GLX_MAX_PBUFFER_PIXELS                         0x8018
+#define LOCAL_GLX_MAX_PBUFFER_PIXELS_SGIX                    0x8018
+#define LOCAL_GLX_MAX_PBUFFER_WIDTH                          0x8016
+#define LOCAL_GLX_MAX_PBUFFER_WIDTH_SGIX                     0x8016
+#define LOCAL_GLX_MAX_SWAP_INTERVAL_EXT                      0x20F2
+#define LOCAL_GLX_MIPMAP_TEXTURE_EXT                         0x20D7
+#define LOCAL_GLX_MULTISAMPLE_SUB_RECT_HEIGHT_SGIS           0x8027
+#define LOCAL_GLX_MULTISAMPLE_SUB_RECT_WIDTH_SGIS            0x8026
+#define LOCAL_GLX_NONE                                       0x8000
+#define LOCAL_GLX_NONE_EXT                                   0x8000
+#define LOCAL_GLX_NON_CONFORMANT_CONFIG                      0x800D
+#define LOCAL_GLX_NON_CONFORMANT_VISUAL_EXT                  0x800D
+#define LOCAL_GLX_NO_EXTENSION                               3
+#define LOCAL_GLX_NO_RESET_NOTIFICATION_ARB                  0x8261
+#define LOCAL_GLX_NUM_VIDEO_CAPTURE_SLOTS_NV                 0x20CF
+#define LOCAL_GLX_NUM_VIDEO_SLOTS_NV                         0x20F0
+#define LOCAL_GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX                0x801A
+#define LOCAL_GLX_OPTIMAL_PBUFFER_WIDTH_SGIX                 0x8019
+#define LOCAL_GLX_PBUFFER                                    0x8023
+#define LOCAL_GLX_PBUFFER_BIT                                0x00000004
+#define LOCAL_GLX_PBUFFER_BIT_SGIX                           0x00000004
+#define LOCAL_GLX_PBUFFER_CLOBBER_MASK                       0x08000000
+#define LOCAL_GLX_PBUFFER_HEIGHT                             0x8040
+#define LOCAL_GLX_PBUFFER_SGIX                               0x8023
+#define LOCAL_GLX_PBUFFER_WIDTH                              0x8041
+#define LOCAL_GLX_PIPE_RECT_LIMITS_SGIX                      0x00000002
+#define LOCAL_GLX_PIPE_RECT_SGIX                             0x00000001
+#define LOCAL_GLX_PIXMAP_BIT                                 0x00000002
+#define LOCAL_GLX_PIXMAP_BIT_SGIX                            0x00000002
+#define LOCAL_GLX_PRESERVED_CONTENTS                         0x801B
+#define LOCAL_GLX_PRESERVED_CONTENTS_SGIX                    0x801B
+#define LOCAL_GLX_PSEUDO_COLOR                               0x8004
+#define LOCAL_GLX_PSEUDO_COLOR_EXT                           0x8004
+#define LOCAL_GLX_PbufferClobber                             0
+#define LOCAL_GLX_RED_SIZE                                   8
+#define LOCAL_GLX_RENDERER_ACCELERATED_MESA                  0x8186
+#define LOCAL_GLX_RENDERER_DEVICE_ID_MESA                    0x8184
+#define LOCAL_GLX_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION_MESA 0x818B
+#define LOCAL_GLX_RENDERER_OPENGL_CORE_PROFILE_VERSION_MESA  0x818A
+#define LOCAL_GLX_RENDERER_OPENGL_ES2_PROFILE_VERSION_MESA   0x818D
+#define LOCAL_GLX_RENDERER_OPENGL_ES_PROFILE_VERSION_MESA    0x818C
+#define LOCAL_GLX_RENDERER_PREFERRED_PROFILE_MESA            0x8189
+#define LOCAL_GLX_RENDERER_UNIFIED_MEMORY_ARCHITECTURE_MESA  0x8188
+#define LOCAL_GLX_RENDERER_VENDOR_ID_MESA                    0x8183
+#define LOCAL_GLX_RENDERER_VERSION_MESA                      0x8185
+#define LOCAL_GLX_RENDERER_VIDEO_MEMORY_MESA                 0x8187
+#define LOCAL_GLX_RENDER_TYPE                                0x8011
+#define LOCAL_GLX_RENDER_TYPE_SGIX                           0x8011
+#define LOCAL_GLX_RGBA                                       4
+#define LOCAL_GLX_RGBA_BIT                                   0x00000001
+#define LOCAL_GLX_RGBA_BIT_SGIX                              0x00000001
+#define LOCAL_GLX_RGBA_FLOAT_BIT_ARB                         0x00000004
+#define LOCAL_GLX_RGBA_FLOAT_TYPE_ARB                        0x20B9
+#define LOCAL_GLX_RGBA_TYPE                                  0x8014
+#define LOCAL_GLX_RGBA_TYPE_SGIX                             0x8014
+#define LOCAL_GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT                0x00000008
+#define LOCAL_GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT               0x20B1
+#define LOCAL_GLX_SAMPLES                                    100001
+#define LOCAL_GLX_SAMPLES_3DFX                               0x8051
+#define LOCAL_GLX_SAMPLES_ARB                                100001
+#define LOCAL_GLX_SAMPLES_SGIS                               100001
+#define LOCAL_GLX_SAMPLE_BUFFERS                             100000
+#define LOCAL_GLX_SAMPLE_BUFFERS_3DFX                        0x8050
+#define LOCAL_GLX_SAMPLE_BUFFERS_ARB                         100000
+#define LOCAL_GLX_SAMPLE_BUFFERS_BIT_SGIX                    0x00000100
+#define LOCAL_GLX_SAMPLE_BUFFERS_SGIS                        100000
+#define LOCAL_GLX_SAVED                                      0x8021
+#define LOCAL_GLX_SAVED_SGIX                                 0x8021
+#define LOCAL_GLX_SCREEN                                     0x800C
+#define LOCAL_GLX_SCREEN_EXT                                 0x800C
+#define LOCAL_GLX_SHARE_CONTEXT_EXT                          0x800A
+#define LOCAL_GLX_SLOW_CONFIG                                0x8001
+#define LOCAL_GLX_SLOW_VISUAL_EXT                            0x8001
+#define LOCAL_GLX_STATIC_COLOR                               0x8005
+#define LOCAL_GLX_STATIC_COLOR_EXT                           0x8005
+#define LOCAL_GLX_STATIC_GRAY                                0x8007
+#define LOCAL_GLX_STATIC_GRAY_EXT                            0x8007
+#define LOCAL_GLX_STENCIL_BUFFER_BIT                         0x00000040
+#define LOCAL_GLX_STENCIL_BUFFER_BIT_SGIX                    0x00000040
+#define LOCAL_GLX_STENCIL_SIZE                               13
+#define LOCAL_GLX_STEREO                                     6
+#define LOCAL_GLX_STEREO_NOTIFY_EXT                          0x00000000
+#define LOCAL_GLX_STEREO_NOTIFY_MASK_EXT                     0x00000001
+#define LOCAL_GLX_STEREO_TREE_EXT                            0x20F5
+#define LOCAL_GLX_SWAP_COPY_OML                              0x8062
+#define LOCAL_GLX_SWAP_EXCHANGE_OML                          0x8061
+#define LOCAL_GLX_SWAP_INTERVAL_EXT                          0x20F1
+#define LOCAL_GLX_SWAP_METHOD_OML                            0x8060
+#define LOCAL_GLX_SWAP_UNDEFINED_OML                         0x8063
+#define LOCAL_GLX_SYNC_FRAME_SGIX                            0x00000000
+#define LOCAL_GLX_SYNC_SWAP_SGIX                             0x00000001
+#define LOCAL_GLX_TEXTURE_1D_BIT_EXT                         0x00000001
+#define LOCAL_GLX_TEXTURE_1D_EXT                             0x20DB
+#define LOCAL_GLX_TEXTURE_2D_BIT_EXT                         0x00000002
+#define LOCAL_GLX_TEXTURE_2D_EXT                             0x20DC
+#define LOCAL_GLX_TEXTURE_FORMAT_EXT                         0x20D5
+#define LOCAL_GLX_TEXTURE_FORMAT_NONE_EXT                    0x20D8
+#define LOCAL_GLX_TEXTURE_FORMAT_RGBA_EXT                    0x20DA
+#define LOCAL_GLX_TEXTURE_FORMAT_RGB_EXT                     0x20D9
+#define LOCAL_GLX_TEXTURE_RECTANGLE_BIT_EXT                  0x00000004
+#define LOCAL_GLX_TEXTURE_RECTANGLE_EXT                      0x20DD
+#define LOCAL_GLX_TEXTURE_TARGET_EXT                         0x20D6
+#define LOCAL_GLX_TRANSPARENT_ALPHA_VALUE                    0x28
+#define LOCAL_GLX_TRANSPARENT_ALPHA_VALUE_EXT                0x28
+#define LOCAL_GLX_TRANSPARENT_BLUE_VALUE                     0x27
+#define LOCAL_GLX_TRANSPARENT_BLUE_VALUE_EXT                 0x27
+#define LOCAL_GLX_TRANSPARENT_GREEN_VALUE                    0x26
+#define LOCAL_GLX_TRANSPARENT_GREEN_VALUE_EXT                0x26
+#define LOCAL_GLX_TRANSPARENT_INDEX                          0x8009
+#define LOCAL_GLX_TRANSPARENT_INDEX_EXT                      0x8009
+#define LOCAL_GLX_TRANSPARENT_INDEX_VALUE                    0x24
+#define LOCAL_GLX_TRANSPARENT_INDEX_VALUE_EXT                0x24
+#define LOCAL_GLX_TRANSPARENT_RED_VALUE                      0x25
+#define LOCAL_GLX_TRANSPARENT_RED_VALUE_EXT                  0x25
+#define LOCAL_GLX_TRANSPARENT_RGB                            0x8008
+#define LOCAL_GLX_TRANSPARENT_RGB_EXT                        0x8008
+#define LOCAL_GLX_TRANSPARENT_TYPE                           0x23
+#define LOCAL_GLX_TRANSPARENT_TYPE_EXT                       0x23
+#define LOCAL_GLX_TRUE_COLOR                                 0x8002
+#define LOCAL_GLX_TRUE_COLOR_EXT                             0x8002
+#define LOCAL_GLX_UNIQUE_ID_NV                               0x20CE
+#define LOCAL_GLX_USE_GL                                     1
+#define LOCAL_GLX_VENDOR                                     0x1
+#define LOCAL_GLX_VENDOR_NAMES_EXT                           0x20F6
+#define LOCAL_GLX_VERSION                                    0x2
+#define LOCAL_GLX_VIDEO_OUT_ALPHA_NV                         0x20C4
+#define LOCAL_GLX_VIDEO_OUT_COLOR_AND_ALPHA_NV               0x20C6
+#define LOCAL_GLX_VIDEO_OUT_COLOR_AND_DEPTH_NV               0x20C7
+#define LOCAL_GLX_VIDEO_OUT_COLOR_NV                         0x20C3
+#define LOCAL_GLX_VIDEO_OUT_DEPTH_NV                         0x20C5
+#define LOCAL_GLX_VIDEO_OUT_FIELD_1_NV                       0x20C9
+#define LOCAL_GLX_VIDEO_OUT_FIELD_2_NV                       0x20CA
+#define LOCAL_GLX_VIDEO_OUT_FRAME_NV                         0x20C8
+#define LOCAL_GLX_VIDEO_OUT_STACKED_FIELDS_1_2_NV            0x20CB
+#define LOCAL_GLX_VIDEO_OUT_STACKED_FIELDS_2_1_NV            0x20CC
+#define LOCAL_GLX_VISUAL_CAVEAT_EXT                          0x20
+#define LOCAL_GLX_VISUAL_ID                                  0x800B
+#define LOCAL_GLX_VISUAL_ID_EXT                              0x800B
+#define LOCAL_GLX_VISUAL_SELECT_GROUP_SGIX                   0x8028
+#define LOCAL_GLX_WIDTH                                      0x801D
+#define LOCAL_GLX_WIDTH_SGIX                                 0x801D
+#define LOCAL_GLX_WINDOW                                     0x8022
+#define LOCAL_GLX_WINDOW_BIT                                 0x00000001
+#define LOCAL_GLX_WINDOW_BIT_SGIX                            0x00000001
+#define LOCAL_GLX_WINDOW_SGIX                                0x8022
+#define LOCAL_GLX_X_RENDERABLE                               0x8012
+#define LOCAL_GLX_X_RENDERABLE_SGIX                          0x8012
+#define LOCAL_GLX_X_VISUAL_TYPE                              0x22
+#define LOCAL_GLX_X_VISUAL_TYPE_EXT                          0x22
+#define LOCAL_GLX_Y_INVERTED_EXT                             0x20D4
+
+// WGL
+#define LOCAL_WGL_ACCELERATION_ARB                           0x2003
+#define LOCAL_WGL_ACCELERATION_EXT                           0x2003
+#define LOCAL_WGL_ACCESS_READ_ONLY_NV                        0x00000000
+#define LOCAL_WGL_ACCESS_READ_WRITE_NV                       0x00000001
+#define LOCAL_WGL_ACCESS_WRITE_DISCARD_NV                    0x00000002
+#define LOCAL_WGL_ACCUM_ALPHA_BITS_ARB                       0x2021
+#define LOCAL_WGL_ACCUM_ALPHA_BITS_EXT                       0x2021
+#define LOCAL_WGL_ACCUM_BITS_ARB                             0x201D
+#define LOCAL_WGL_ACCUM_BITS_EXT                             0x201D
+#define LOCAL_WGL_ACCUM_BLUE_BITS_ARB                        0x2020
+#define LOCAL_WGL_ACCUM_BLUE_BITS_EXT                        0x2020
+#define LOCAL_WGL_ACCUM_GREEN_BITS_ARB                       0x201F
+#define LOCAL_WGL_ACCUM_GREEN_BITS_EXT                       0x201F
+#define LOCAL_WGL_ACCUM_RED_BITS_ARB                         0x201E
+#define LOCAL_WGL_ACCUM_RED_BITS_EXT                         0x201E
+#define LOCAL_WGL_ALPHA_BITS_ARB                             0x201B
+#define LOCAL_WGL_ALPHA_BITS_EXT                             0x201B
+#define LOCAL_WGL_ALPHA_SHIFT_ARB                            0x201C
+#define LOCAL_WGL_ALPHA_SHIFT_EXT                            0x201C
+#define LOCAL_WGL_AUX0_ARB                                   0x2087
+#define LOCAL_WGL_AUX1_ARB                                   0x2088
+#define LOCAL_WGL_AUX2_ARB                                   0x2089
+#define LOCAL_WGL_AUX3_ARB                                   0x208A
+#define LOCAL_WGL_AUX4_ARB                                   0x208B
+#define LOCAL_WGL_AUX5_ARB                                   0x208C
+#define LOCAL_WGL_AUX6_ARB                                   0x208D
+#define LOCAL_WGL_AUX7_ARB                                   0x208E
+#define LOCAL_WGL_AUX8_ARB                                   0x208F
+#define LOCAL_WGL_AUX9_ARB                                   0x2090
+#define LOCAL_WGL_AUX_BUFFERS_ARB                            0x2024
+#define LOCAL_WGL_AUX_BUFFERS_EXT                            0x2024
+#define LOCAL_WGL_BACK_COLOR_BUFFER_BIT_ARB                  0x00000002
+#define LOCAL_WGL_BACK_LEFT_ARB                              0x2085
+#define LOCAL_WGL_BACK_RIGHT_ARB                             0x2086
+#define LOCAL_WGL_BIND_TO_TEXTURE_DEPTH_NV                   0x20A3
+#define LOCAL_WGL_BIND_TO_TEXTURE_RECTANGLE_DEPTH_NV         0x20A4
+#define LOCAL_WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGBA_NV    0x20B4
+#define LOCAL_WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV     0x20B3
+#define LOCAL_WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RG_NV      0x20B2
+#define LOCAL_WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_R_NV       0x20B1
+#define LOCAL_WGL_BIND_TO_TEXTURE_RECTANGLE_RGBA_NV          0x20A1
+#define LOCAL_WGL_BIND_TO_TEXTURE_RECTANGLE_RGB_NV           0x20A0
+#define LOCAL_WGL_BIND_TO_TEXTURE_RGBA_ARB                   0x2071
+#define LOCAL_WGL_BIND_TO_TEXTURE_RGB_ARB                    0x2070
+#define LOCAL_WGL_BIND_TO_VIDEO_RGBA_NV                      0x20C1
+#define LOCAL_WGL_BIND_TO_VIDEO_RGB_AND_DEPTH_NV             0x20C2
+#define LOCAL_WGL_BIND_TO_VIDEO_RGB_NV                       0x20C0
+#define LOCAL_WGL_BLUE_BITS_ARB                              0x2019
+#define LOCAL_WGL_BLUE_BITS_EXT                              0x2019
+#define LOCAL_WGL_BLUE_SHIFT_ARB                             0x201A
+#define LOCAL_WGL_BLUE_SHIFT_EXT                             0x201A
+#define LOCAL_WGL_COLORSPACE_EXT                             0x309D
+#define LOCAL_WGL_COLORSPACE_LINEAR_EXT                      0x308A
+#define LOCAL_WGL_COLORSPACE_SRGB_EXT                        0x3089
+#define LOCAL_WGL_COLOR_BITS_ARB                             0x2014
+#define LOCAL_WGL_COLOR_BITS_EXT                             0x2014
+#define LOCAL_WGL_COLOR_SAMPLES_NV                           0x20B9
+#define LOCAL_WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB      0x00000002
+#define LOCAL_WGL_CONTEXT_CORE_PROFILE_BIT_ARB               0x00000001
+#define LOCAL_WGL_CONTEXT_DEBUG_BIT_ARB                      0x00000001
+#define LOCAL_WGL_CONTEXT_ES2_PROFILE_BIT_EXT                0x00000004
+#define LOCAL_WGL_CONTEXT_ES_PROFILE_BIT_EXT                 0x00000004
+#define LOCAL_WGL_CONTEXT_FLAGS_ARB                          0x2094
+#define LOCAL_WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB         0x00000002
+#define LOCAL_WGL_CONTEXT_LAYER_PLANE_ARB                    0x2093
+#define LOCAL_WGL_CONTEXT_MAJOR_VERSION_ARB                  0x2091
+#define LOCAL_WGL_CONTEXT_MINOR_VERSION_ARB                  0x2092
+#define LOCAL_WGL_CONTEXT_MULTIGPU_ATTRIB_AFR_NV             0x20AC
+#define LOCAL_WGL_CONTEXT_MULTIGPU_ATTRIB_MULTICAST_NV       0x20AD
+#define LOCAL_WGL_CONTEXT_MULTIGPU_ATTRIB_MULTI_DISPLAY_MULTICAST_NV 0x20AE
+#define LOCAL_WGL_CONTEXT_MULTIGPU_ATTRIB_NV                 0x20AA
+#define LOCAL_WGL_CONTEXT_MULTIGPU_ATTRIB_SINGLE_NV          0x20AB
+#define LOCAL_WGL_CONTEXT_OPENGL_NO_ERROR_ARB                0x31B3
+#define LOCAL_WGL_CONTEXT_PROFILE_MASK_ARB                   0x9126
+#define LOCAL_WGL_CONTEXT_RELEASE_BEHAVIOR_ARB               0x2097
+#define LOCAL_WGL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB         0x2098
+#define LOCAL_WGL_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB          0
+#define LOCAL_WGL_CONTEXT_RESET_ISOLATION_BIT_ARB            0x00000008
+#define LOCAL_WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB    0x8256
+#define LOCAL_WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB              0x00000004
+#define LOCAL_WGL_COVERAGE_SAMPLES_NV                        0x2042
+#define LOCAL_WGL_CUBE_MAP_FACE_ARB                          0x207C
+#define LOCAL_WGL_DEPTH_BITS_ARB                             0x2022
+#define LOCAL_WGL_DEPTH_BITS_EXT                             0x2022
+#define LOCAL_WGL_DEPTH_BUFFER_BIT_ARB                       0x00000004
+#define LOCAL_WGL_DEPTH_COMPONENT_NV                         0x20A7
+#define LOCAL_WGL_DEPTH_FLOAT_EXT                            0x2040
+#define LOCAL_WGL_DEPTH_TEXTURE_FORMAT_NV                    0x20A5
+#define LOCAL_WGL_DIGITAL_VIDEO_CURSOR_ALPHA_FRAMEBUFFER_I3D 0x2050
+#define LOCAL_WGL_DIGITAL_VIDEO_CURSOR_ALPHA_VALUE_I3D       0x2051
+#define LOCAL_WGL_DIGITAL_VIDEO_CURSOR_INCLUDED_I3D          0x2052
+#define LOCAL_WGL_DIGITAL_VIDEO_GAMMA_CORRECTED_I3D          0x2053
+#define LOCAL_WGL_DOUBLE_BUFFER_ARB                          0x2011
+#define LOCAL_WGL_DOUBLE_BUFFER_EXT                          0x2011
+#define LOCAL_WGL_DRAW_TO_BITMAP_ARB                         0x2002
+#define LOCAL_WGL_DRAW_TO_BITMAP_EXT                         0x2002
+#define LOCAL_WGL_DRAW_TO_PBUFFER_ARB                        0x202D
+#define LOCAL_WGL_DRAW_TO_PBUFFER_EXT                        0x202D
+#define LOCAL_WGL_DRAW_TO_WINDOW_ARB                         0x2001
+#define LOCAL_WGL_DRAW_TO_WINDOW_EXT                         0x2001
+#define LOCAL_WGL_FLOAT_COMPONENTS_NV                        0x20B0
+#define LOCAL_WGL_FONT_LINES                                 0
+#define LOCAL_WGL_FONT_POLYGONS                              1
+#define LOCAL_WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB               0x20A9
+#define LOCAL_WGL_FRAMEBUFFER_SRGB_CAPABLE_EXT               0x20A9
+#define LOCAL_WGL_FRONT_COLOR_BUFFER_BIT_ARB                 0x00000001
+#define LOCAL_WGL_FRONT_LEFT_ARB                             0x2083
+#define LOCAL_WGL_FRONT_RIGHT_ARB                            0x2084
+#define LOCAL_WGL_FULL_ACCELERATION_ARB                      0x2027
+#define LOCAL_WGL_FULL_ACCELERATION_EXT                      0x2027
+#define LOCAL_WGL_GAMMA_EXCLUDE_DESKTOP_I3D                  0x204F
+#define LOCAL_WGL_GAMMA_TABLE_SIZE_I3D                       0x204E
+#define LOCAL_WGL_GENERIC_ACCELERATION_ARB                   0x2026
+#define LOCAL_WGL_GENERIC_ACCELERATION_EXT                   0x2026
+#define LOCAL_WGL_GENLOCK_SOURCE_DIGITAL_FIELD_I3D           0x2049
+#define LOCAL_WGL_GENLOCK_SOURCE_DIGITAL_SYNC_I3D            0x2048
+#define LOCAL_WGL_GENLOCK_SOURCE_EDGE_BOTH_I3D               0x204C
+#define LOCAL_WGL_GENLOCK_SOURCE_EDGE_FALLING_I3D            0x204A
+#define LOCAL_WGL_GENLOCK_SOURCE_EDGE_RISING_I3D             0x204B
+#define LOCAL_WGL_GENLOCK_SOURCE_EXTERNAL_FIELD_I3D          0x2046
+#define LOCAL_WGL_GENLOCK_SOURCE_EXTERNAL_SYNC_I3D           0x2045
+#define LOCAL_WGL_GENLOCK_SOURCE_EXTERNAL_TTL_I3D            0x2047
+#define LOCAL_WGL_GENLOCK_SOURCE_MULTIVIEW_I3D               0x2044
+#define LOCAL_WGL_GPU_CLOCK_AMD                              0x21A4
+#define LOCAL_WGL_GPU_FASTEST_TARGET_GPUS_AMD                0x21A2
+#define LOCAL_WGL_GPU_NUM_PIPES_AMD                          0x21A5
+#define LOCAL_WGL_GPU_NUM_RB_AMD                             0x21A7
+#define LOCAL_WGL_GPU_NUM_SIMD_AMD                           0x21A6
+#define LOCAL_WGL_GPU_NUM_SPI_AMD                            0x21A8
+#define LOCAL_WGL_GPU_OPENGL_VERSION_STRING_AMD              0x1F02
+#define LOCAL_WGL_GPU_RAM_AMD                                0x21A3
+#define LOCAL_WGL_GPU_RENDERER_STRING_AMD                    0x1F01
+#define LOCAL_WGL_GPU_VENDOR_AMD                             0x1F00
+#define LOCAL_WGL_GREEN_BITS_ARB                             0x2017
+#define LOCAL_WGL_GREEN_BITS_EXT                             0x2017
+#define LOCAL_WGL_GREEN_SHIFT_ARB                            0x2018
+#define LOCAL_WGL_GREEN_SHIFT_EXT                            0x2018
+#define LOCAL_WGL_IMAGE_BUFFER_LOCK_I3D                      0x00000002
+#define LOCAL_WGL_IMAGE_BUFFER_MIN_ACCESS_I3D                0x00000001
+#define LOCAL_WGL_LOSE_CONTEXT_ON_RESET_ARB                  0x8252
+#define LOCAL_WGL_MAX_PBUFFER_HEIGHT_ARB                     0x2030
+#define LOCAL_WGL_MAX_PBUFFER_HEIGHT_EXT                     0x2030
+#define LOCAL_WGL_MAX_PBUFFER_PIXELS_ARB                     0x202E
+#define LOCAL_WGL_MAX_PBUFFER_PIXELS_EXT                     0x202E
+#define LOCAL_WGL_MAX_PBUFFER_WIDTH_ARB                      0x202F
+#define LOCAL_WGL_MAX_PBUFFER_WIDTH_EXT                      0x202F
+#define LOCAL_WGL_MIPMAP_LEVEL_ARB                           0x207B
+#define LOCAL_WGL_MIPMAP_TEXTURE_ARB                         0x2074
+#define LOCAL_WGL_NEED_PALETTE_ARB                           0x2004
+#define LOCAL_WGL_NEED_PALETTE_EXT                           0x2004
+#define LOCAL_WGL_NEED_SYSTEM_PALETTE_ARB                    0x2005
+#define LOCAL_WGL_NEED_SYSTEM_PALETTE_EXT                    0x2005
+#define LOCAL_WGL_NO_ACCELERATION_ARB                        0x2025
+#define LOCAL_WGL_NO_ACCELERATION_EXT                        0x2025
+#define LOCAL_WGL_NO_RESET_NOTIFICATION_ARB                  0x8261
+#define LOCAL_WGL_NO_TEXTURE_ARB                             0x2077
+#define LOCAL_WGL_NUMBER_OVERLAYS_ARB                        0x2008
+#define LOCAL_WGL_NUMBER_OVERLAYS_EXT                        0x2008
+#define LOCAL_WGL_NUMBER_PIXEL_FORMATS_ARB                   0x2000
+#define LOCAL_WGL_NUMBER_PIXEL_FORMATS_EXT                   0x2000
+#define LOCAL_WGL_NUMBER_UNDERLAYS_ARB                       0x2009
+#define LOCAL_WGL_NUMBER_UNDERLAYS_EXT                       0x2009
+#define LOCAL_WGL_NUM_VIDEO_CAPTURE_SLOTS_NV                 0x20CF
+#define LOCAL_WGL_NUM_VIDEO_SLOTS_NV                         0x20F0
+#define LOCAL_WGL_OPTIMAL_PBUFFER_HEIGHT_EXT                 0x2032
+#define LOCAL_WGL_OPTIMAL_PBUFFER_WIDTH_EXT                  0x2031
+#define LOCAL_WGL_PBUFFER_HEIGHT_ARB                         0x2035
+#define LOCAL_WGL_PBUFFER_HEIGHT_EXT                         0x2035
+#define LOCAL_WGL_PBUFFER_LARGEST_ARB                        0x2033
+#define LOCAL_WGL_PBUFFER_LARGEST_EXT                        0x2033
+#define LOCAL_WGL_PBUFFER_LOST_ARB                           0x2036
+#define LOCAL_WGL_PBUFFER_WIDTH_ARB                          0x2034
+#define LOCAL_WGL_PBUFFER_WIDTH_EXT                          0x2034
+#define LOCAL_WGL_PIXEL_TYPE_ARB                             0x2013
+#define LOCAL_WGL_PIXEL_TYPE_EXT                             0x2013
+#define LOCAL_WGL_RED_BITS_ARB                               0x2015
+#define LOCAL_WGL_RED_BITS_EXT                               0x2015
+#define LOCAL_WGL_RED_SHIFT_ARB                              0x2016
+#define LOCAL_WGL_RED_SHIFT_EXT                              0x2016
+#define LOCAL_WGL_SAMPLES_3DFX                               0x2061
+#define LOCAL_WGL_SAMPLES_ARB                                0x2042
+#define LOCAL_WGL_SAMPLES_EXT                                0x2042
+#define LOCAL_WGL_SAMPLE_BUFFERS_3DFX                        0x2060
+#define LOCAL_WGL_SAMPLE_BUFFERS_ARB                         0x2041
+#define LOCAL_WGL_SAMPLE_BUFFERS_EXT                         0x2041
+#define LOCAL_WGL_SHARE_ACCUM_ARB                            0x200E
+#define LOCAL_WGL_SHARE_ACCUM_EXT                            0x200E
+#define LOCAL_WGL_SHARE_DEPTH_ARB                            0x200C
+#define LOCAL_WGL_SHARE_DEPTH_EXT                            0x200C
+#define LOCAL_WGL_SHARE_STENCIL_ARB                          0x200D
+#define LOCAL_WGL_SHARE_STENCIL_EXT                          0x200D
+#define LOCAL_WGL_STENCIL_BITS_ARB                           0x2023
+#define LOCAL_WGL_STENCIL_BITS_EXT                           0x2023
+#define LOCAL_WGL_STENCIL_BUFFER_BIT_ARB                     0x00000008
+#define LOCAL_WGL_STEREO_ARB                                 0x2012
+#define LOCAL_WGL_STEREO_EMITTER_DISABLE_3DL                 0x2056
+#define LOCAL_WGL_STEREO_EMITTER_ENABLE_3DL                  0x2055
+#define LOCAL_WGL_STEREO_EXT                                 0x2012
+#define LOCAL_WGL_STEREO_POLARITY_INVERT_3DL                 0x2058
+#define LOCAL_WGL_STEREO_POLARITY_NORMAL_3DL                 0x2057
+#define LOCAL_WGL_SUPPORT_GDI_ARB                            0x200F
+#define LOCAL_WGL_SUPPORT_GDI_EXT                            0x200F
+#define LOCAL_WGL_SUPPORT_OPENGL_ARB                         0x2010
+#define LOCAL_WGL_SUPPORT_OPENGL_EXT                         0x2010
+#define LOCAL_WGL_SWAP_COPY_ARB                              0x2029
+#define LOCAL_WGL_SWAP_COPY_EXT                              0x2029
+#define LOCAL_WGL_SWAP_EXCHANGE_ARB                          0x2028
+#define LOCAL_WGL_SWAP_EXCHANGE_EXT                          0x2028
+#define LOCAL_WGL_SWAP_LAYER_BUFFERS_ARB                     0x2006
+#define LOCAL_WGL_SWAP_LAYER_BUFFERS_EXT                     0x2006
+#define LOCAL_WGL_SWAP_MAIN_PLANE                            0x00000001
+#define LOCAL_WGL_SWAP_METHOD_ARB                            0x2007
+#define LOCAL_WGL_SWAP_METHOD_EXT                            0x2007
+#define LOCAL_WGL_SWAP_OVERLAY1                              0x00000002
+#define LOCAL_WGL_SWAP_OVERLAY10                             0x00000400
+#define LOCAL_WGL_SWAP_OVERLAY11                             0x00000800
+#define LOCAL_WGL_SWAP_OVERLAY12                             0x00001000
+#define LOCAL_WGL_SWAP_OVERLAY13                             0x00002000
+#define LOCAL_WGL_SWAP_OVERLAY14                             0x00004000
+#define LOCAL_WGL_SWAP_OVERLAY15                             0x00008000
+#define LOCAL_WGL_SWAP_OVERLAY2                              0x00000004
+#define LOCAL_WGL_SWAP_OVERLAY3                              0x00000008
+#define LOCAL_WGL_SWAP_OVERLAY4                              0x00000010
+#define LOCAL_WGL_SWAP_OVERLAY5                              0x00000020
+#define LOCAL_WGL_SWAP_OVERLAY6                              0x00000040
+#define LOCAL_WGL_SWAP_OVERLAY7                              0x00000080
+#define LOCAL_WGL_SWAP_OVERLAY8                              0x00000100
+#define LOCAL_WGL_SWAP_OVERLAY9                              0x00000200
+#define LOCAL_WGL_SWAP_UNDEFINED_ARB                         0x202A
+#define LOCAL_WGL_SWAP_UNDEFINED_EXT                         0x202A
+#define LOCAL_WGL_SWAP_UNDERLAY1                             0x00010000
+#define LOCAL_WGL_SWAP_UNDERLAY10                            0x02000000
+#define LOCAL_WGL_SWAP_UNDERLAY11                            0x04000000
+#define LOCAL_WGL_SWAP_UNDERLAY12                            0x08000000
+#define LOCAL_WGL_SWAP_UNDERLAY13                            0x10000000
+#define LOCAL_WGL_SWAP_UNDERLAY14                            0x20000000
+#define LOCAL_WGL_SWAP_UNDERLAY15                            0x40000000
+#define LOCAL_WGL_SWAP_UNDERLAY2                             0x00020000
+#define LOCAL_WGL_SWAP_UNDERLAY3                             0x00040000
+#define LOCAL_WGL_SWAP_UNDERLAY4                             0x00080000
+#define LOCAL_WGL_SWAP_UNDERLAY5                             0x00100000
+#define LOCAL_WGL_SWAP_UNDERLAY6                             0x00200000
+#define LOCAL_WGL_SWAP_UNDERLAY7                             0x00400000
+#define LOCAL_WGL_SWAP_UNDERLAY8                             0x00800000
+#define LOCAL_WGL_SWAP_UNDERLAY9                             0x01000000
+#define LOCAL_WGL_TEXTURE_1D_ARB                             0x2079
+#define LOCAL_WGL_TEXTURE_2D_ARB                             0x207A
+#define LOCAL_WGL_TEXTURE_CUBE_MAP_ARB                       0x2078
+#define LOCAL_WGL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB            0x207E
+#define LOCAL_WGL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB            0x2080
+#define LOCAL_WGL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB            0x2082
+#define LOCAL_WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB            0x207D
+#define LOCAL_WGL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB            0x207F
+#define LOCAL_WGL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB            0x2081
+#define LOCAL_WGL_TEXTURE_DEPTH_COMPONENT_NV                 0x20A6
+#define LOCAL_WGL_TEXTURE_FLOAT_RGBA_NV                      0x20B8
+#define LOCAL_WGL_TEXTURE_FLOAT_RGB_NV                       0x20B7
+#define LOCAL_WGL_TEXTURE_FLOAT_RG_NV                        0x20B6
+#define LOCAL_WGL_TEXTURE_FLOAT_R_NV                         0x20B5
+#define LOCAL_WGL_TEXTURE_FORMAT_ARB                         0x2072
+#define LOCAL_WGL_TEXTURE_RECTANGLE_ATI                      0x21A5
+#define LOCAL_WGL_TEXTURE_RECTANGLE_NV                       0x20A2
+#define LOCAL_WGL_TEXTURE_RGBA_ARB                           0x2076
+#define LOCAL_WGL_TEXTURE_RGB_ARB                            0x2075
+#define LOCAL_WGL_TEXTURE_TARGET_ARB                         0x2073
+#define LOCAL_WGL_TRANSPARENT_ALPHA_VALUE_ARB                0x203A
+#define LOCAL_WGL_TRANSPARENT_ARB                            0x200A
+#define LOCAL_WGL_TRANSPARENT_BLUE_VALUE_ARB                 0x2039
+#define LOCAL_WGL_TRANSPARENT_EXT                            0x200A
+#define LOCAL_WGL_TRANSPARENT_GREEN_VALUE_ARB                0x2038
+#define LOCAL_WGL_TRANSPARENT_INDEX_VALUE_ARB                0x203B
+#define LOCAL_WGL_TRANSPARENT_RED_VALUE_ARB                  0x2037
+#define LOCAL_WGL_TRANSPARENT_VALUE_EXT                      0x200B
+#define LOCAL_WGL_TYPE_COLORINDEX_ARB                        0x202C
+#define LOCAL_WGL_TYPE_COLORINDEX_EXT                        0x202C
+#define LOCAL_WGL_TYPE_RGBA_ARB                              0x202B
+#define LOCAL_WGL_TYPE_RGBA_EXT                              0x202B
+#define LOCAL_WGL_TYPE_RGBA_FLOAT_ARB                        0x21A0
+#define LOCAL_WGL_TYPE_RGBA_FLOAT_ATI                        0x21A0
+#define LOCAL_WGL_TYPE_RGBA_UNSIGNED_FLOAT_EXT               0x20A8
+#define LOCAL_WGL_UNIQUE_ID_NV                               0x20CE
+#define LOCAL_WGL_VIDEO_OUT_ALPHA_NV                         0x20C4
+#define LOCAL_WGL_VIDEO_OUT_COLOR_AND_ALPHA_NV               0x20C6
+#define LOCAL_WGL_VIDEO_OUT_COLOR_AND_DEPTH_NV               0x20C7
+#define LOCAL_WGL_VIDEO_OUT_COLOR_NV                         0x20C3
+#define LOCAL_WGL_VIDEO_OUT_DEPTH_NV                         0x20C5
+#define LOCAL_WGL_VIDEO_OUT_FIELD_1                          0x20C9
+#define LOCAL_WGL_VIDEO_OUT_FIELD_2                          0x20CA
+#define LOCAL_WGL_VIDEO_OUT_FRAME                            0x20C8
+#define LOCAL_WGL_VIDEO_OUT_STACKED_FIELDS_1_2               0x20CB
+#define LOCAL_WGL_VIDEO_OUT_STACKED_FIELDS_2_1               0x20CC
+
+#endif // GLCONSTS_H_
+
+// clang-format on
diff --git a/gfx/gl/GLConsts.py b/gfx/gl/GLConsts.py
new file mode 100755
index 0000000000..07d70c662a
--- /dev/null
+++ b/gfx/gl/GLConsts.py
@@ -0,0 +1,175 @@
+#!/usr/bin/env python3
+
+"""
+This script will regenerate and update GLConsts.h.
+
+Step 1:
+  Download the last gl.xml, egl.xml, glx.xml and wgl.xml from
+  http://www.opengl.org/registry/#specfiles into some XML_DIR:
+    wget https://www.khronos.org/registry/OpenGL/xml/gl.xml
+    wget https://www.khronos.org/registry/OpenGL/xml/glx.xml
+    wget https://www.khronos.org/registry/OpenGL/xml/wgl.xml
+    wget https://www.khronos.org/registry/EGL/api/egl.xml
+
+Step 2:
+  `py ./GLConsts.py <XML_DIR>`
+
+Step 3:
+  Do not add the downloaded XML in the patch
+
+Step 4:
+  Enjoy =)
+"""
+
+# includes
+import pathlib
+import sys
+import xml.etree.ElementTree
+from typing import List  # mypy!
+
+# -
+
+(_, XML_DIR_STR) = sys.argv
+XML_DIR = pathlib.Path(XML_DIR_STR)
+
+# -
+
+HEADER = b"""
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// clang-format off
+
+#ifndef GLCONSTS_H_
+#define GLCONSTS_H_
+
+/**
+ * GENERATED FILE, DO NOT MODIFY DIRECTLY.
+ * This is a file generated directly from the official OpenGL registry
+ * xml available http://www.opengl.org/registry/#specfiles.
+ *
+ * To generate this file, see tutorial in \'GLConsts.py\'.
+ */
+"""[
+    1:
+]
+
+FOOTER = b"""
+#endif // GLCONSTS_H_
+
+// clang-format on
+"""[
+    1:
+]
+
+# -
+
+
+def format_lib_constant(lib, name, value):
+    # lib would be 'GL', 'EGL', 'GLX' or 'WGL'
+    # name is the name of the const (example: MAX_TEXTURE_SIZE)
+    # value is the value of the const (example: 0xABCD)
+
+    define = "#define LOCAL_" + lib + "_" + name
+    whitespace = 60 - len(define)
+    if whitespace < 0:
+        whitespace = whitespace % 8
+
+    return define + " " * whitespace + " " + value
+
+
+class GLConst:
+    def __init__(self, lib, name, value, type):
+        self.lib = lib
+        self.name = name
+        self.value = value
+        self.type = type
+
+
+class GLDatabase:
+    LIBS = ["GL", "EGL", "GLX", "WGL"]
+
+    def __init__(self):
+        self.consts = {}
+        self.libs = set(GLDatabase.LIBS)
+        self.vendors = set(["EXT", "ATI"])
+        # there is no vendor="EXT" and vendor="ATI" in gl.xml,
+        # so we manualy declare them
+
+    def load_xml(self, xml_path):
+        tree = xml.etree.ElementTree.parse(xml_path)
+        root = tree.getroot()
+
+        for enums in root.iter("enums"):
+            vendor = enums.get("vendor")
+            if not vendor:
+                # there some standart enums that do have the vendor attribute,
+                # so we fake them as ARB's enums
+                vendor = "ARB"
+
+            if vendor not in self.vendors:
+                # we map this new vendor in the vendors set.
+                self.vendors.add(vendor)
+
+            namespaceType = enums.get("type")
+
+            for enum in enums:
+                if enum.tag != "enum":
+                    # this is not an enum => we skip it
+                    continue
+
+                lib = enum.get("name").split("_")[0]
+
+                if lib not in self.libs:
+                    # unknown library => we skip it
+                    continue
+
+                name = enum.get("name")[len(lib) + 1 :]
+                value = enum.get("value")
+                type = enum.get("type")
+
+                if not type:
+                    # if no type specified, we get the namespace's default type
+                    type = namespaceType
+
+                self.consts[lib + "_" + name] = GLConst(lib, name, value, type)
+
+
+# -
+
+db = GLDatabase()
+db.load_xml(XML_DIR / "gl.xml")
+db.load_xml(XML_DIR / "glx.xml")
+db.load_xml(XML_DIR / "wgl.xml")
+db.load_xml(XML_DIR / "egl.xml")
+
+# -
+
+lines: List[str] = []  # noqa: E999 (bug 1573737)
+
+keys = sorted(db.consts.keys())
+
+for lib in db.LIBS:
+    lines.append("// " + lib)
+
+    for k in keys:
+        const = db.consts[k]
+
+        if const.lib != lib:
+            continue
+
+        const_str = format_lib_constant(lib, const.name, const.value)
+        lines.append(const_str)
+
+    lines.append("")
+
+# -
+
+b_lines: List[bytes] = [HEADER] + [x.encode() for x in lines] + [FOOTER]
+b_data: bytes = b"\n".join(b_lines)
+
+dest = pathlib.Path("GLConsts.h")
+dest.write_bytes(b_data)
+
+print(f"Wrote {len(b_data)} bytes.")  # Some indication that we're successful.
diff --git a/gfx/gl/GLContext.cpp b/gfx/gl/GLContext.cpp
new file mode 100644
index 0000000000..f67aedd0b2
--- /dev/null
+++ b/gfx/gl/GLContext.cpp
@@ -0,0 +1,2677 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLContext.h"
+
+#include <algorithm>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <regex>
+#include <string>
+#include <vector>
+#ifdef MOZ_WIDGET_ANDROID
+#  include <sys/mman.h>
+#endif
+#if defined(XP_LINUX) && !defined(ANDROID)
+// For MesaMemoryLeakWorkaround
+#  include <dlfcn.h>
+#  include <link.h>
+#endif
+
+#include "GLBlitHelper.h"
+#include "GLReadTexImageHelper.h"
+#include "GLScreenBuffer.h"
+
+#include "gfxCrashReporterUtils.h"
+#include "gfxEnv.h"
+#include "gfxUtils.h"
+#include "GLContextProvider.h"
+#include "GLLibraryLoader.h"
+#include "GLTextureImage.h"
+#include "nsPrintfCString.h"
+#include "nsThreadUtils.h"
+#include "prenv.h"
+#include "prlink.h"
+#include "ScopedGLHelpers.h"
+#include "SharedSurfaceGL.h"
+#include "GfxTexturesReporter.h"
+#include "gfx2DGlue.h"
+#include "mozilla/StaticPrefs_gfx.h"
+#include "mozilla/StaticPrefs_gl.h"
+#include "mozilla/IntegerPrintfMacros.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/layers/BuildConstants.h"
+#include "mozilla/layers/TextureForwarder.h"  // for LayersIPCChannel
+
+#include "OGLShaderProgram.h"  // for ShaderProgramType
+
+#include "mozilla/DebugOnly.h"
+#include "mozilla/Maybe.h"
+
+#ifdef XP_MACOSX
+#  include <CoreServices/CoreServices.h>
+#endif
+
+#if defined(MOZ_WIDGET_COCOA)
+#  include "nsCocoaFeatures.h"
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "mozilla/jni/Utils.h"
+#endif
+
+namespace mozilla {
+namespace gl {
+
+using namespace mozilla::gfx;
+using namespace mozilla::layers;
+
+// Zero-initialized after init().
+MOZ_THREAD_LOCAL(const GLContext*) GLContext::sCurrentContext;
+
+// If adding defines, don't forget to undefine symbols. See #undef block below.
+// clang-format off
+#define CORE_SYMBOL(x) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x }} }
+#define CORE_EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x, "gl" #x #y, "gl" #x #z }} }
+#define EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x #y, "gl" #x #z }} }
+#define EXT_SYMBOL3(x,y,z,w) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x #y, "gl" #x #z, "gl" #x #w }} }
+#define END_SYMBOLS { nullptr, {} }
+// clang-format on
+
+// should match the order of GLExtensions, and be null-terminated.
+static const char* const sExtensionNames[] = {
+    "NO_EXTENSION",
+    "GL_AMD_compressed_ATC_texture",
+    "GL_ANGLE_depth_texture",
+    "GL_ANGLE_framebuffer_blit",
+    "GL_ANGLE_framebuffer_multisample",
+    "GL_ANGLE_instanced_arrays",
+    "GL_ANGLE_multiview",
+    "GL_ANGLE_provoking_vertex",
+    "GL_ANGLE_texture_compression_dxt3",
+    "GL_ANGLE_texture_compression_dxt5",
+    "GL_ANGLE_timer_query",
+    "GL_APPLE_client_storage",
+    "GL_APPLE_fence",
+    "GL_APPLE_framebuffer_multisample",
+    "GL_APPLE_sync",
+    "GL_APPLE_texture_range",
+    "GL_APPLE_vertex_array_object",
+    "GL_ARB_ES2_compatibility",
+    "GL_ARB_ES3_compatibility",
+    "GL_ARB_color_buffer_float",
+    "GL_ARB_compatibility",
+    "GL_ARB_copy_buffer",
+    "GL_ARB_depth_texture",
+    "GL_ARB_draw_buffers",
+    "GL_ARB_draw_instanced",
+    "GL_ARB_framebuffer_object",
+    "GL_ARB_framebuffer_sRGB",
+    "GL_ARB_geometry_shader4",
+    "GL_ARB_half_float_pixel",
+    "GL_ARB_instanced_arrays",
+    "GL_ARB_internalformat_query",
+    "GL_ARB_invalidate_subdata",
+    "GL_ARB_map_buffer_range",
+    "GL_ARB_occlusion_query2",
+    "GL_ARB_pixel_buffer_object",
+    "GL_ARB_provoking_vertex",
+    "GL_ARB_robust_buffer_access_behavior",
+    "GL_ARB_robustness",
+    "GL_ARB_sampler_objects",
+    "GL_ARB_seamless_cube_map",
+    "GL_ARB_shader_texture_lod",
+    "GL_ARB_sync",
+    "GL_ARB_texture_compression",
+    "GL_ARB_texture_compression_bptc",
+    "GL_ARB_texture_compression_rgtc",
+    "GL_ARB_texture_float",
+    "GL_ARB_texture_non_power_of_two",
+    "GL_ARB_texture_rectangle",
+    "GL_ARB_texture_rg",
+    "GL_ARB_texture_storage",
+    "GL_ARB_texture_swizzle",
+    "GL_ARB_timer_query",
+    "GL_ARB_transform_feedback2",
+    "GL_ARB_uniform_buffer_object",
+    "GL_ARB_vertex_array_object",
+    "GL_CHROMIUM_color_buffer_float_rgb",
+    "GL_CHROMIUM_color_buffer_float_rgba",
+    "GL_EXT_bgra",
+    "GL_EXT_blend_minmax",
+    "GL_EXT_color_buffer_float",
+    "GL_EXT_color_buffer_half_float",
+    "GL_EXT_copy_texture",
+    "GL_EXT_disjoint_timer_query",
+    "GL_EXT_draw_buffers",
+    "GL_EXT_draw_buffers2",
+    "GL_EXT_draw_instanced",
+    "GL_EXT_float_blend",
+    "GL_EXT_frag_depth",
+    "GL_EXT_framebuffer_blit",
+    "GL_EXT_framebuffer_multisample",
+    "GL_EXT_framebuffer_object",
+    "GL_EXT_framebuffer_sRGB",
+    "GL_EXT_gpu_shader4",
+    "GL_EXT_map_buffer_range",
+    "GL_EXT_multisampled_render_to_texture",
+    "GL_EXT_occlusion_query_boolean",
+    "GL_EXT_packed_depth_stencil",
+    "GL_EXT_provoking_vertex",
+    "GL_EXT_read_format_bgra",
+    "GL_EXT_robustness",
+    "GL_EXT_sRGB",
+    "GL_EXT_sRGB_write_control",
+    "GL_EXT_shader_texture_lod",
+    "GL_EXT_texture_compression_bptc",
+    "GL_EXT_texture_compression_dxt1",
+    "GL_EXT_texture_compression_rgtc",
+    "GL_EXT_texture_compression_s3tc",
+    "GL_EXT_texture_compression_s3tc_srgb",
+    "GL_EXT_texture_filter_anisotropic",
+    "GL_EXT_texture_format_BGRA8888",
+    "GL_EXT_texture_norm16",
+    "GL_EXT_texture_sRGB",
+    "GL_EXT_texture_storage",
+    "GL_EXT_timer_query",
+    "GL_EXT_transform_feedback",
+    "GL_EXT_unpack_subimage",
+    "GL_IMG_read_format",
+    "GL_IMG_texture_compression_pvrtc",
+    "GL_IMG_texture_npot",
+    "GL_KHR_debug",
+    "GL_KHR_parallel_shader_compile",
+    "GL_KHR_robust_buffer_access_behavior",
+    "GL_KHR_robustness",
+    "GL_KHR_texture_compression_astc_hdr",
+    "GL_KHR_texture_compression_astc_ldr",
+    "GL_NV_draw_instanced",
+    "GL_NV_fence",
+    "GL_NV_framebuffer_blit",
+    "GL_NV_geometry_program4",
+    "GL_NV_half_float",
+    "GL_NV_instanced_arrays",
+    "GL_NV_primitive_restart",
+    "GL_NV_texture_barrier",
+    "GL_NV_transform_feedback",
+    "GL_NV_transform_feedback2",
+    "GL_OES_EGL_image",
+    "GL_OES_EGL_image_external",
+    "GL_OES_EGL_sync",
+    "GL_OES_compressed_ETC1_RGB8_texture",
+    "GL_OES_depth24",
+    "GL_OES_depth32",
+    "GL_OES_depth_texture",
+    "GL_OES_draw_buffers_indexed",
+    "GL_OES_element_index_uint",
+    "GL_OES_fbo_render_mipmap",
+    "GL_OES_framebuffer_object",
+    "GL_OES_packed_depth_stencil",
+    "GL_OES_rgb8_rgba8",
+    "GL_OES_standard_derivatives",
+    "GL_OES_stencil8",
+    "GL_OES_texture_3D",
+    "GL_OES_texture_float",
+    "GL_OES_texture_float_linear",
+    "GL_OES_texture_half_float",
+    "GL_OES_texture_half_float_linear",
+    "GL_OES_texture_npot",
+    "GL_OES_vertex_array_object",
+    "GL_OVR_multiview2"};
+
+static bool ShouldUseTLSIsCurrent(bool useTLSIsCurrent) {
+  if (StaticPrefs::gl_use_tls_is_current() == 0) {
+    return useTLSIsCurrent;
+  }
+
+  return StaticPrefs::gl_use_tls_is_current() > 0;
+}
+
+static bool ParseVersion(const std::string& versionStr,
+                         uint32_t* const out_major, uint32_t* const out_minor) {
+  static const std::regex kVersionRegex("([0-9]+)\\.([0-9]+)");
+  std::smatch match;
+  if (!std::regex_search(versionStr, match, kVersionRegex)) return false;
+
+  const auto& majorStr = match.str(1);
+  const auto& minorStr = match.str(2);
+  *out_major = atoi(majorStr.c_str());
+  *out_minor = atoi(minorStr.c_str());
+  return true;
+}
+
+/*static*/
+uint8_t GLContext::ChooseDebugFlags(const CreateContextFlags createFlags) {
+  uint8_t debugFlags = 0;
+
+#ifdef MOZ_GL_DEBUG_BUILD
+  if (gfxEnv::MOZ_GL_DEBUG()) {
+    debugFlags |= GLContext::DebugFlagEnabled;
+  }
+
+  // Enables extra verbose output, informing of the start and finish of every GL
+  // call. Useful e.g. to record information to investigate graphics system
+  // crashes/lockups
+  if (gfxEnv::MOZ_GL_DEBUG_VERBOSE()) {
+    debugFlags |= GLContext::DebugFlagTrace;
+  }
+
+  // Aborts on GL error. Can be useful to debug quicker code that is known not
+  // to generate any GL error in principle.
+  bool abortOnError = false;
+
+  if (createFlags & CreateContextFlags::NO_VALIDATION) {
+    abortOnError = true;
+
+    const auto& env = gfxEnv::MOZ_GL_DEBUG_ABORT_ON_ERROR();
+    if (env.as_str == "0") {
+      abortOnError = false;
+    }
+  }
+
+  if (abortOnError) {
+    debugFlags |= GLContext::DebugFlagAbortOnError;
+  }
+#endif
+
+  return debugFlags;
+}
+
+GLContext::GLContext(const GLContextDesc& desc, GLContext* sharedContext,
+                     bool useTLSIsCurrent)
+    : mDesc(desc),
+      mUseTLSIsCurrent(ShouldUseTLSIsCurrent(useTLSIsCurrent)),
+      mDebugFlags(ChooseDebugFlags(mDesc.flags)),
+      mSharedContext(sharedContext),
+      mOwningThreadId(Some(PlatformThread::CurrentId())),
+      mWorkAroundDriverBugs(
+          StaticPrefs::gfx_work_around_driver_bugs_AtStartup()) {}
+
+GLContext::~GLContext() {
+  NS_ASSERTION(
+      IsDestroyed(),
+      "GLContext implementation must call MarkDestroyed in destructor!");
+#ifdef MOZ_GL_DEBUG_BUILD
+  if (mSharedContext) {
+    GLContext* tip = mSharedContext;
+    while (tip->mSharedContext) tip = tip->mSharedContext;
+    tip->SharedContextDestroyed(this);
+    tip->ReportOutstandingNames();
+  } else {
+    ReportOutstandingNames();
+  }
+#endif
+  // Ensure we clear sCurrentContext if we were the last context set and avoid
+  // the memory getting reused.
+  if (sCurrentContext.init() && sCurrentContext.get() == this) {
+    sCurrentContext.set(nullptr);
+  }
+}
+
+/*static*/
+void GLContext::StaticDebugCallback(GLenum source, GLenum type, GLuint id,
+                                    GLenum severity, GLsizei length,
+                                    const GLchar* message,
+                                    const GLvoid* userParam) {
+  GLContext* gl = (GLContext*)userParam;
+  gl->DebugCallback(source, type, id, severity, length, message);
+}
+
+bool GLContext::Init() {
+  MOZ_RELEASE_ASSERT(!mSymbols.fBindFramebuffer,
+                     "GFX: GLContext::Init should only be called once.");
+
+  ScopedGfxFeatureReporter reporter("GL Context");
+
+  if (!InitImpl()) {
+    // If initialization fails, zero the symbols to avoid hard-to-understand
+    // bugs.
+    mSymbols = {};
+    NS_WARNING("GLContext::InitWithPrefix failed!");
+    return false;
+  }
+
+  reporter.SetSuccessful();
+  return true;
+}
+
+static bool LoadSymbolsWithDesc(const SymbolLoader& loader,
+                                const SymLoadStruct* list, const char* desc) {
+  const auto warnOnFailure = bool(desc);
+  if (loader.LoadSymbols(list, warnOnFailure)) return true;
+
+  ClearSymbols(list);
+
+  if (desc) {
+    const nsPrintfCString err("Failed to load symbols for %s.", desc);
+    NS_ERROR(err.BeginReading());
+  }
+  return false;
+}
+
+bool GLContext::LoadExtSymbols(const SymbolLoader& loader,
+                               const SymLoadStruct* list, GLExtensions ext) {
+  const char* extName = sExtensionNames[size_t(ext)];
+  if (!LoadSymbolsWithDesc(loader, list, extName)) {
+    MarkExtensionUnsupported(ext);
+    return false;
+  }
+  return true;
+};
+
+bool GLContext::LoadFeatureSymbols(const SymbolLoader& loader,
+                                   const SymLoadStruct* list,
+                                   GLFeature feature) {
+  const char* featureName = GetFeatureName(feature);
+  if (!LoadSymbolsWithDesc(loader, list, featureName)) {
+    MarkUnsupported(feature);
+    return false;
+  }
+  return true;
+};
+
+bool GLContext::InitImpl() {
+  if (!MakeCurrent(true)) return false;
+
+  const auto loader = GetSymbolLoader();
+  if (!loader) return false;
+
+  const auto fnLoadSymbols = [&](const SymLoadStruct* const list,
+                                 const char* const desc) {
+    return LoadSymbolsWithDesc(*loader, list, desc);
+  };
+
+  // clang-format off
+    const SymLoadStruct coreSymbols[] = {
+        { (PRFuncPtr*) &mSymbols.fActiveTexture, {{ "glActiveTexture", "glActiveTextureARB" }} },
+        { (PRFuncPtr*) &mSymbols.fAttachShader, {{ "glAttachShader", "glAttachShaderARB" }} },
+        { (PRFuncPtr*) &mSymbols.fBindAttribLocation, {{ "glBindAttribLocation", "glBindAttribLocationARB" }} },
+        { (PRFuncPtr*) &mSymbols.fBindBuffer, {{ "glBindBuffer", "glBindBufferARB" }} },
+        { (PRFuncPtr*) &mSymbols.fBindTexture, {{ "glBindTexture", "glBindTextureARB" }} },
+        { (PRFuncPtr*) &mSymbols.fBlendColor, {{ "glBlendColor" }} },
+        { (PRFuncPtr*) &mSymbols.fBlendEquation, {{ "glBlendEquation" }} },
+        { (PRFuncPtr*) &mSymbols.fBlendEquationSeparate, {{ "glBlendEquationSeparate", "glBlendEquationSeparateEXT" }} },
+        { (PRFuncPtr*) &mSymbols.fBlendFunc, {{ "glBlendFunc" }} },
+        { (PRFuncPtr*) &mSymbols.fBlendFuncSeparate, {{ "glBlendFuncSeparate", "glBlendFuncSeparateEXT" }} },
+        { (PRFuncPtr*) &mSymbols.fBufferData, {{ "glBufferData" }} },
+        { (PRFuncPtr*) &mSymbols.fBufferSubData, {{ "glBufferSubData" }} },
+        { (PRFuncPtr*) &mSymbols.fClear, {{ "glClear" }} },
+        { (PRFuncPtr*) &mSymbols.fClearColor, {{ "glClearColor" }} },
+        { (PRFuncPtr*) &mSymbols.fClearStencil, {{ "glClearStencil" }} },
+        { (PRFuncPtr*) &mSymbols.fColorMask, {{ "glColorMask" }} },
+        { (PRFuncPtr*) &mSymbols.fCompressedTexImage2D, {{ "glCompressedTexImage2D" }} },
+        { (PRFuncPtr*) &mSymbols.fCompressedTexSubImage2D, {{ "glCompressedTexSubImage2D" }} },
+        { (PRFuncPtr*) &mSymbols.fCullFace, {{ "glCullFace" }} },
+        { (PRFuncPtr*) &mSymbols.fDetachShader, {{ "glDetachShader", "glDetachShaderARB" }} },
+        { (PRFuncPtr*) &mSymbols.fDepthFunc, {{ "glDepthFunc" }} },
+        { (PRFuncPtr*) &mSymbols.fDepthMask, {{ "glDepthMask" }} },
+        { (PRFuncPtr*) &mSymbols.fDisable, {{ "glDisable" }} },
+        { (PRFuncPtr*) &mSymbols.fDisableVertexAttribArray, {{ "glDisableVertexAttribArray", "glDisableVertexAttribArrayARB" }} },
+        { (PRFuncPtr*) &mSymbols.fDrawArrays, {{ "glDrawArrays" }} },
+        { (PRFuncPtr*) &mSymbols.fDrawElements, {{ "glDrawElements" }} },
+        { (PRFuncPtr*) &mSymbols.fEnable, {{ "glEnable" }} },
+        { (PRFuncPtr*) &mSymbols.fEnableVertexAttribArray, {{ "glEnableVertexAttribArray", "glEnableVertexAttribArrayARB" }} },
+        { (PRFuncPtr*) &mSymbols.fFinish, {{ "glFinish" }} },
+        { (PRFuncPtr*) &mSymbols.fFlush, {{ "glFlush" }} },
+        { (PRFuncPtr*) &mSymbols.fFrontFace, {{ "glFrontFace" }} },
+        { (PRFuncPtr*) &mSymbols.fGetActiveAttrib, {{ "glGetActiveAttrib", "glGetActiveAttribARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetActiveUniform, {{ "glGetActiveUniform", "glGetActiveUniformARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetAttachedShaders, {{ "glGetAttachedShaders", "glGetAttachedShadersARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetAttribLocation, {{ "glGetAttribLocation", "glGetAttribLocationARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetIntegerv, {{ "glGetIntegerv" }} },
+        { (PRFuncPtr*) &mSymbols.fGetFloatv, {{ "glGetFloatv" }} },
+        { (PRFuncPtr*) &mSymbols.fGetBooleanv, {{ "glGetBooleanv" }} },
+        { (PRFuncPtr*) &mSymbols.fGetBufferParameteriv, {{ "glGetBufferParameteriv", "glGetBufferParameterivARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetError, {{ "glGetError" }} },
+        { (PRFuncPtr*) &mSymbols.fGetProgramiv, {{ "glGetProgramiv", "glGetProgramivARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetProgramInfoLog, {{ "glGetProgramInfoLog", "glGetProgramInfoLogARB" }} },
+        { (PRFuncPtr*) &mSymbols.fTexParameteri, {{ "glTexParameteri" }} },
+        { (PRFuncPtr*) &mSymbols.fTexParameteriv, {{ "glTexParameteriv" }} },
+        { (PRFuncPtr*) &mSymbols.fTexParameterf, {{ "glTexParameterf" }} },
+        { (PRFuncPtr*) &mSymbols.fGetString, {{ "glGetString" }} },
+        { (PRFuncPtr*) &mSymbols.fGetTexParameterfv, {{ "glGetTexParameterfv" }} },
+        { (PRFuncPtr*) &mSymbols.fGetTexParameteriv, {{ "glGetTexParameteriv" }} },
+        { (PRFuncPtr*) &mSymbols.fGetUniformfv, {{ "glGetUniformfv", "glGetUniformfvARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetUniformiv, {{ "glGetUniformiv", "glGetUniformivARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetUniformLocation, {{ "glGetUniformLocation", "glGetUniformLocationARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetVertexAttribfv, {{ "glGetVertexAttribfv", "glGetVertexAttribfvARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetVertexAttribiv, {{ "glGetVertexAttribiv", "glGetVertexAttribivARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGetVertexAttribPointerv, {{ "glGetVertexAttribPointerv" }} },
+        { (PRFuncPtr*) &mSymbols.fHint, {{ "glHint" }} },
+        { (PRFuncPtr*) &mSymbols.fIsBuffer, {{ "glIsBuffer", "glIsBufferARB" }} },
+        { (PRFuncPtr*) &mSymbols.fIsEnabled, {{ "glIsEnabled" }} },
+        { (PRFuncPtr*) &mSymbols.fIsProgram, {{ "glIsProgram", "glIsProgramARB" }} },
+        { (PRFuncPtr*) &mSymbols.fIsShader, {{ "glIsShader", "glIsShaderARB" }} },
+        { (PRFuncPtr*) &mSymbols.fIsTexture, {{ "glIsTexture", "glIsTextureARB" }} },
+        { (PRFuncPtr*) &mSymbols.fLineWidth, {{ "glLineWidth" }} },
+        { (PRFuncPtr*) &mSymbols.fLinkProgram, {{ "glLinkProgram", "glLinkProgramARB" }} },
+        { (PRFuncPtr*) &mSymbols.fPixelStorei, {{ "glPixelStorei" }} },
+        { (PRFuncPtr*) &mSymbols.fPolygonOffset, {{ "glPolygonOffset" }} },
+        { (PRFuncPtr*) &mSymbols.fReadPixels, {{ "glReadPixels" }} },
+        { (PRFuncPtr*) &mSymbols.fSampleCoverage, {{ "glSampleCoverage" }} },
+        { (PRFuncPtr*) &mSymbols.fScissor, {{ "glScissor" }} },
+        { (PRFuncPtr*) &mSymbols.fStencilFunc, {{ "glStencilFunc" }} },
+        { (PRFuncPtr*) &mSymbols.fStencilFuncSeparate, {{ "glStencilFuncSeparate", "glStencilFuncSeparateEXT" }} },
+        { (PRFuncPtr*) &mSymbols.fStencilMask, {{ "glStencilMask" }} },
+        { (PRFuncPtr*) &mSymbols.fStencilMaskSeparate, {{ "glStencilMaskSeparate", "glStencilMaskSeparateEXT" }} },
+        { (PRFuncPtr*) &mSymbols.fStencilOp, {{ "glStencilOp" }} },
+        { (PRFuncPtr*) &mSymbols.fStencilOpSeparate, {{ "glStencilOpSeparate", "glStencilOpSeparateEXT" }} },
+        { (PRFuncPtr*) &mSymbols.fTexImage2D, {{ "glTexImage2D" }} },
+        { (PRFuncPtr*) &mSymbols.fTexSubImage2D, {{ "glTexSubImage2D" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform1f, {{ "glUniform1f" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform1fv, {{ "glUniform1fv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform1i, {{ "glUniform1i" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform1iv, {{ "glUniform1iv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform2f, {{ "glUniform2f" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform2fv, {{ "glUniform2fv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform2i, {{ "glUniform2i" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform2iv, {{ "glUniform2iv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform3f, {{ "glUniform3f" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform3fv, {{ "glUniform3fv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform3i, {{ "glUniform3i" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform3iv, {{ "glUniform3iv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform4f, {{ "glUniform4f" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform4fv, {{ "glUniform4fv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform4i, {{ "glUniform4i" }} },
+        { (PRFuncPtr*) &mSymbols.fUniform4iv, {{ "glUniform4iv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniformMatrix2fv, {{ "glUniformMatrix2fv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniformMatrix3fv, {{ "glUniformMatrix3fv" }} },
+        { (PRFuncPtr*) &mSymbols.fUniformMatrix4fv, {{ "glUniformMatrix4fv" }} },
+        { (PRFuncPtr*) &mSymbols.fUseProgram, {{ "glUseProgram" }} },
+        { (PRFuncPtr*) &mSymbols.fValidateProgram, {{ "glValidateProgram" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttribPointer, {{ "glVertexAttribPointer" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttrib1f, {{ "glVertexAttrib1f" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttrib2f, {{ "glVertexAttrib2f" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttrib3f, {{ "glVertexAttrib3f" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttrib4f, {{ "glVertexAttrib4f" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttrib1fv, {{ "glVertexAttrib1fv" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttrib2fv, {{ "glVertexAttrib2fv" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttrib3fv, {{ "glVertexAttrib3fv" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttrib4fv, {{ "glVertexAttrib4fv" }} },
+        { (PRFuncPtr*) &mSymbols.fViewport, {{ "glViewport" }} },
+        { (PRFuncPtr*) &mSymbols.fCompileShader, {{ "glCompileShader" }} },
+        { (PRFuncPtr*) &mSymbols.fCopyTexImage2D, {{ "glCopyTexImage2D" }} },
+        { (PRFuncPtr*) &mSymbols.fCopyTexSubImage2D, {{ "glCopyTexSubImage2D" }} },
+        { (PRFuncPtr*) &mSymbols.fGetShaderiv, {{ "glGetShaderiv" }} },
+        { (PRFuncPtr*) &mSymbols.fGetShaderInfoLog, {{ "glGetShaderInfoLog" }} },
+        { (PRFuncPtr*) &mSymbols.fGetShaderSource, {{ "glGetShaderSource" }} },
+        { (PRFuncPtr*) &mSymbols.fShaderSource, {{ "glShaderSource" }} },
+        { (PRFuncPtr*) &mSymbols.fVertexAttribPointer, {{ "glVertexAttribPointer" }} },
+
+        { (PRFuncPtr*) &mSymbols.fGenBuffers, {{ "glGenBuffers", "glGenBuffersARB" }} },
+        { (PRFuncPtr*) &mSymbols.fGenTextures, {{ "glGenTextures" }} },
+        { (PRFuncPtr*) &mSymbols.fCreateProgram, {{ "glCreateProgram", "glCreateProgramARB" }} },
+        { (PRFuncPtr*) &mSymbols.fCreateShader, {{ "glCreateShader", "glCreateShaderARB" }} },
+
+        { (PRFuncPtr*) &mSymbols.fDeleteBuffers, {{ "glDeleteBuffers", "glDeleteBuffersARB" }} },
+        { (PRFuncPtr*) &mSymbols.fDeleteTextures, {{ "glDeleteTextures", "glDeleteTexturesARB" }} },
+        { (PRFuncPtr*) &mSymbols.fDeleteProgram, {{ "glDeleteProgram", "glDeleteProgramARB" }} },
+        { (PRFuncPtr*) &mSymbols.fDeleteShader, {{ "glDeleteShader", "glDeleteShaderARB" }} },
+
+        END_SYMBOLS
+    };
+  // clang-format on
+
+  if (!fnLoadSymbols(coreSymbols, "GL")) return false;
+
+  {
+    const SymLoadStruct symbols[] = {
+        {(PRFuncPtr*)&mSymbols.fGetGraphicsResetStatus,
+         {{"glGetGraphicsResetStatus", "glGetGraphicsResetStatusARB",
+           "glGetGraphicsResetStatusKHR", "glGetGraphicsResetStatusEXT"}}},
+        END_SYMBOLS};
+    (void)fnLoadSymbols(symbols, nullptr);
+
+    // We need to call the fGetError symbol directly here because if there is an
+    // unflushed reset status, we don't want to mark the context as lost. That
+    // would prevent us from recovering.
+    auto err = mSymbols.fGetError();
+    if (err == LOCAL_GL_CONTEXT_LOST) {
+      MOZ_ASSERT(mSymbols.fGetGraphicsResetStatus);
+      const auto status = fGetGraphicsResetStatus();
+      if (status) {
+        printf_stderr("Unflushed glGetGraphicsResetStatus: 0x%04x\n", status);
+      }
+      err = fGetError();
+      MOZ_ASSERT(!err);
+    }
+    if (err) {
+      MOZ_ASSERT(false);
+      return false;
+    }
+  }
+
+  ////////////////
+
+  const auto* const versionRawStr = (const char*)fGetString(LOCAL_GL_VERSION);
+  if (!versionRawStr || !*versionRawStr) {
+    // This can happen with Pernosco.
+    NS_WARNING("Empty GL version string");
+    return false;
+  }
+
+  const std::string versionStr = versionRawStr;
+  if (versionStr.find("OpenGL ES") == 0) {
+    mProfile = ContextProfile::OpenGLES;
+  }
+
+  uint32_t majorVer, minorVer;
+  if (!ParseVersion(versionStr, &majorVer, &minorVer)) {
+    MOZ_ASSERT(false, "Failed to parse GL_VERSION");
+    return false;
+  }
+  MOZ_ASSERT(majorVer < 10);
+  MOZ_ASSERT(minorVer < 10);
+  mVersion = majorVer * 100 + minorVer * 10;
+  if (mVersion < 200) return false;
+
+  ////
+
+  const auto glslVersionStr =
+      (const char*)fGetString(LOCAL_GL_SHADING_LANGUAGE_VERSION);
+  if (!glslVersionStr) {
+    // This happens on the Android emulators. We'll just return 100
+    mShadingLanguageVersion = 100;
+  } else if (ParseVersion(glslVersionStr, &majorVer, &minorVer)) {
+    MOZ_ASSERT(majorVer < 10);
+    MOZ_ASSERT(minorVer < 100);
+    mShadingLanguageVersion = majorVer * 100 + minorVer;
+  } else {
+    MOZ_ASSERT(false, "Failed to parse GL_SHADING_LANGUAGE_VERSION");
+    return false;
+  }
+
+  if (ShouldSpew()) {
+    printf_stderr("GL version detected: %u\n", mVersion);
+    printf_stderr("GLSL version detected: %u\n", mShadingLanguageVersion);
+    printf_stderr("OpenGL vendor: %s\n", fGetString(LOCAL_GL_VENDOR));
+    printf_stderr("OpenGL renderer: %s\n", fGetString(LOCAL_GL_RENDERER));
+  }
+
+  ////////////////
+
+  // Load OpenGL ES 2.0 symbols, or desktop if we aren't using ES 2.
+  if (mProfile == ContextProfile::OpenGLES) {
+    const SymLoadStruct symbols[] = {CORE_SYMBOL(GetShaderPrecisionFormat),
+                                     CORE_SYMBOL(ClearDepthf),
+                                     CORE_SYMBOL(DepthRangef), END_SYMBOLS};
+
+    if (!fnLoadSymbols(symbols, "OpenGL ES")) return false;
+  } else {
+    const SymLoadStruct symbols[] = {
+        CORE_SYMBOL(ClearDepth), CORE_SYMBOL(DepthRange),
+        CORE_SYMBOL(ReadBuffer), CORE_SYMBOL(MapBuffer),
+        CORE_SYMBOL(UnmapBuffer), CORE_SYMBOL(PointParameterf),
+        CORE_SYMBOL(DrawBuffer),
+        // The following functions are only used by Skia/GL in desktop mode.
+        // Other parts of Gecko should avoid using these
+        CORE_SYMBOL(DrawBuffers), CORE_SYMBOL(ClientActiveTexture),
+        CORE_SYMBOL(DisableClientState), CORE_SYMBOL(EnableClientState),
+        CORE_SYMBOL(LoadIdentity), CORE_SYMBOL(LoadMatrixf),
+        CORE_SYMBOL(MatrixMode), CORE_SYMBOL(PolygonMode), CORE_SYMBOL(TexGeni),
+        CORE_SYMBOL(TexGenf), CORE_SYMBOL(TexGenfv), CORE_SYMBOL(VertexPointer),
+        END_SYMBOLS};
+
+    if (!fnLoadSymbols(symbols, "Desktop OpenGL")) return false;
+  }
+
+  ////////////////
+
+  const char* glVendorString = (const char*)fGetString(LOCAL_GL_VENDOR);
+  const char* glRendererString = (const char*)fGetString(LOCAL_GL_RENDERER);
+  if (!glVendorString || !glRendererString) return false;
+
+  // The order of these strings must match up with the order of the enum
+  // defined in GLContext.h for vendor IDs.
+  const char* vendorMatchStrings[size_t(GLVendor::Other) + 1] = {
+      "Intel",   "NVIDIA",  "ATI",          "Qualcomm", "Imagination",
+      "nouveau", "Vivante", "VMware, Inc.", "ARM",      "Unknown"};
+
+  mVendor = GLVendor::Other;
+  for (size_t i = 0; i < size_t(GLVendor::Other); ++i) {
+    if (DoesStringMatch(glVendorString, vendorMatchStrings[i])) {
+      mVendor = GLVendor(i);
+      break;
+    }
+  }
+
+  // The order of these strings must match up with the order of the enum
+  // defined in GLContext.h for renderer IDs.
+  const char* rendererMatchStrings[size_t(GLRenderer::Other) + 1] = {
+      "Adreno 200",
+      "Adreno 205",
+      "Adreno (TM) 200",
+      "Adreno (TM) 205",
+      "Adreno (TM) 305",
+      "Adreno (TM) 320",
+      "Adreno (TM) 330",
+      "Adreno (TM) 420",
+      "Mali-400 MP",
+      "Mali-450 MP",
+      "Mali-T",
+      "PowerVR SGX 530",
+      "PowerVR SGX 540",
+      "PowerVR SGX 544MP",
+      "NVIDIA Tegra",
+      "Android Emulator",
+      "Gallium 0.4 on llvmpipe",
+      "Intel HD Graphics 3000 OpenGL Engine",
+      "Microsoft Basic Render Driver",
+      "Unknown"};
+
+  mRenderer = GLRenderer::Other;
+  for (size_t i = 0; i < size_t(GLRenderer::Other); ++i) {
+    if (DoesStringMatch(glRendererString, rendererMatchStrings[i])) {
+      mRenderer = GLRenderer(i);
+      break;
+    }
+  }
+
+  {
+    const auto versionStr = (const char*)fGetString(LOCAL_GL_VERSION);
+    if (strstr(versionStr, "Mesa")) {
+      mIsMesa = true;
+    }
+  }
+
+  const auto Once = []() {
+    static bool did = false;
+    if (did) return false;
+    did = true;
+    return true;
+  };
+
+  bool printRenderer = ShouldSpew();
+  printRenderer |= (kIsDebug && Once());
+  if (printRenderer) {
+    printf_stderr("GL_VENDOR: %s\n", glVendorString);
+    printf_stderr("mVendor: %s\n", vendorMatchStrings[size_t(mVendor)]);
+    printf_stderr("GL_RENDERER: %s\n", glRendererString);
+    printf_stderr("mRenderer: %s\n", rendererMatchStrings[size_t(mRenderer)]);
+    printf_stderr("mIsMesa: %i\n", int(mIsMesa));
+  }
+
+  ////////////////
+
+  if (mVersion >= 300) {  // Both GL3 and ES3.
+    const SymLoadStruct symbols[] = {
+        {(PRFuncPtr*)&mSymbols.fGetStringi, {{"glGetStringi"}}}, END_SYMBOLS};
+
+    if (!fnLoadSymbols(symbols, "GetStringi")) {
+      MOZ_RELEASE_ASSERT(false, "GFX: GetStringi is required!");
+      return false;
+    }
+  }
+
+  InitExtensions();
+  if (mProfile != ContextProfile::OpenGLES) {
+    if (mVersion >= 310 && !IsExtensionSupported(ARB_compatibility)) {
+      mProfile = ContextProfile::OpenGLCore;
+    } else {
+      mProfile = ContextProfile::OpenGLCompatibility;
+    }
+  }
+  MOZ_ASSERT(mProfile != ContextProfile::Unknown);
+
+  if (ShouldSpew()) {
+    const char* profileStr = "";
+    if (mProfile == ContextProfile::OpenGLES) {
+      profileStr = " es";
+    } else if (mProfile == ContextProfile::OpenGLCore) {
+      profileStr = " core";
+    }
+    printf_stderr("Detected profile: %u%s\n", mVersion, profileStr);
+  }
+
+  InitFeatures();
+
+  ////
+
+  // Disable extensions with partial or incorrect support.
+  if (WorkAroundDriverBugs()) {
+    if (Renderer() == GLRenderer::AdrenoTM320) {
+      MarkUnsupported(GLFeature::standard_derivatives);
+    }
+
+    if (Renderer() == GLRenderer::AndroidEmulator) {
+      // Bug 1665300
+      mSymbols.fGetGraphicsResetStatus = 0;
+    }
+
+    if (Vendor() == GLVendor::Vivante) {
+      // bug 958256
+      MarkUnsupported(GLFeature::standard_derivatives);
+    }
+
+    if (Renderer() == GLRenderer::MicrosoftBasicRenderDriver) {
+      // Bug 978966: on Microsoft's "Basic Render Driver" (software renderer)
+      // multisampling hardcodes blending with the default blendfunc, which
+      // breaks WebGL.
+      MarkUnsupported(GLFeature::framebuffer_multisample);
+    }
+
+    if (IsMesa()) {
+      // DrawElementsInstanced hangs the driver.
+      MarkUnsupported(GLFeature::robust_buffer_access_behavior);
+    }
+  }
+
+  if (IsExtensionSupported(GLContext::ARB_pixel_buffer_object)) {
+    MOZ_ASSERT(
+        (mSymbols.fMapBuffer && mSymbols.fUnmapBuffer),
+        "ARB_pixel_buffer_object supported without glMapBuffer/UnmapBuffer"
+        " being available!");
+  }
+
+  ////////////////////////////////////////////////////////////////////////////
+
+  const auto fnLoadForFeature = [&](const SymLoadStruct* list,
+                                    GLFeature feature) {
+    return this->LoadFeatureSymbols(*loader, list, feature);
+  };
+
+  // Check for ARB_framebuffer_objects
+  if (IsSupported(GLFeature::framebuffer_object)) {
+    // https://www.opengl.org/registry/specs/ARB/framebuffer_object.txt
+    const SymLoadStruct symbols[] = {
+        CORE_SYMBOL(IsRenderbuffer),
+        CORE_SYMBOL(BindRenderbuffer),
+        CORE_SYMBOL(DeleteRenderbuffers),
+        CORE_SYMBOL(GenRenderbuffers),
+        CORE_SYMBOL(RenderbufferStorage),
+        CORE_SYMBOL(RenderbufferStorageMultisample),
+        CORE_SYMBOL(GetRenderbufferParameteriv),
+        CORE_SYMBOL(IsFramebuffer),
+        CORE_SYMBOL(BindFramebuffer),
+        CORE_SYMBOL(DeleteFramebuffers),
+        CORE_SYMBOL(GenFramebuffers),
+        CORE_SYMBOL(CheckFramebufferStatus),
+        CORE_SYMBOL(FramebufferTexture2D),
+        CORE_SYMBOL(FramebufferTextureLayer),
+        CORE_SYMBOL(FramebufferRenderbuffer),
+        CORE_SYMBOL(GetFramebufferAttachmentParameteriv),
+        CORE_SYMBOL(BlitFramebuffer),
+        CORE_SYMBOL(GenerateMipmap),
+        END_SYMBOLS};
+    fnLoadForFeature(symbols, GLFeature::framebuffer_object);
+  }
+
+  if (!IsSupported(GLFeature::framebuffer_object)) {
+    // Check for aux symbols based on extensions
+    if (IsSupported(GLFeature::framebuffer_object_EXT_OES)) {
+      const SymLoadStruct symbols[] = {
+          CORE_EXT_SYMBOL2(IsRenderbuffer, EXT, OES),
+          CORE_EXT_SYMBOL2(BindRenderbuffer, EXT, OES),
+          CORE_EXT_SYMBOL2(DeleteRenderbuffers, EXT, OES),
+          CORE_EXT_SYMBOL2(GenRenderbuffers, EXT, OES),
+          CORE_EXT_SYMBOL2(RenderbufferStorage, EXT, OES),
+          CORE_EXT_SYMBOL2(GetRenderbufferParameteriv, EXT, OES),
+          CORE_EXT_SYMBOL2(IsFramebuffer, EXT, OES),
+          CORE_EXT_SYMBOL2(BindFramebuffer, EXT, OES),
+          CORE_EXT_SYMBOL2(DeleteFramebuffers, EXT, OES),
+          CORE_EXT_SYMBOL2(GenFramebuffers, EXT, OES),
+          CORE_EXT_SYMBOL2(CheckFramebufferStatus, EXT, OES),
+          CORE_EXT_SYMBOL2(FramebufferTexture2D, EXT, OES),
+          CORE_EXT_SYMBOL2(FramebufferRenderbuffer, EXT, OES),
+          CORE_EXT_SYMBOL2(GetFramebufferAttachmentParameteriv, EXT, OES),
+          CORE_EXT_SYMBOL2(GenerateMipmap, EXT, OES),
+          END_SYMBOLS};
+      fnLoadForFeature(symbols, GLFeature::framebuffer_object_EXT_OES);
+    }
+
+    if (IsSupported(GLFeature::framebuffer_blit)) {
+      const SymLoadStruct symbols[] = {
+          EXT_SYMBOL3(BlitFramebuffer, ANGLE, EXT, NV), END_SYMBOLS};
+      fnLoadForFeature(symbols, GLFeature::framebuffer_blit);
+    }
+
+    if (IsSupported(GLFeature::framebuffer_multisample)) {
+      const SymLoadStruct symbols[] = {
+          EXT_SYMBOL3(RenderbufferStorageMultisample, ANGLE, APPLE, EXT),
+          END_SYMBOLS};
+      fnLoadForFeature(symbols, GLFeature::framebuffer_multisample);
+    }
+
+    if (IsExtensionSupported(GLContext::ARB_geometry_shader4) ||
+        IsExtensionSupported(GLContext::NV_geometry_program4)) {
+      const SymLoadStruct symbols[] = {
+          EXT_SYMBOL2(FramebufferTextureLayer, ARB, EXT), END_SYMBOLS};
+      if (!fnLoadSymbols(symbols,
+                         "ARB_geometry_shader4/NV_geometry_program4")) {
+        MarkExtensionUnsupported(GLContext::ARB_geometry_shader4);
+        MarkExtensionUnsupported(GLContext::NV_geometry_program4);
+      }
+    }
+  }
+
+  if (!IsSupported(GLFeature::framebuffer_object) &&
+      !IsSupported(GLFeature::framebuffer_object_EXT_OES)) {
+    NS_ERROR("GLContext requires support for framebuffer objects.");
+    return false;
+  }
+  MOZ_RELEASE_ASSERT(mSymbols.fBindFramebuffer,
+                     "GFX: mSymbols.fBindFramebuffer zero or not set.");
+
+  ////////////////
+
+  const auto err = fGetError();
+  MOZ_RELEASE_ASSERT(!IsBadCallError(err));
+  if (err) return false;
+
+  LoadMoreSymbols(*loader);
+
+  ////////////////////////////////////////////////////////////////////////////
+
+  raw_fGetIntegerv(LOCAL_GL_VIEWPORT, mViewportRect);
+  raw_fGetIntegerv(LOCAL_GL_SCISSOR_BOX, mScissorRect);
+  raw_fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
+  raw_fGetIntegerv(LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE, &mMaxCubeMapTextureSize);
+  raw_fGetIntegerv(LOCAL_GL_MAX_RENDERBUFFER_SIZE, &mMaxRenderbufferSize);
+  raw_fGetIntegerv(LOCAL_GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
+
+  if (mWorkAroundDriverBugs) {
+    int maxTexSize = INT32_MAX;
+    int maxCubeSize = INT32_MAX;
+#ifdef XP_MACOSX
+    if (!nsCocoaFeatures::IsAtLeastVersion(10, 12)) {
+      if (mVendor == GLVendor::Intel) {
+        // see bug 737182 for 2D textures, bug 684882 for cube map textures.
+        maxTexSize = 4096;
+        maxCubeSize = 512;
+      } else if (mVendor == GLVendor::NVIDIA) {
+        // See bug 879656.  8192 fails, 8191 works.
+        maxTexSize = 8191;
+      }
+    } else {
+      // https://bugzilla.mozilla.org/show_bug.cgi?id=1544446
+      // Mojave exposes 16k textures, but gives FRAMEBUFFER_UNSUPPORTED for any
+      // 16k*16k FB except rgba8 without depth/stencil.
+      // The max supported sizes changes based on involved formats.
+      // (RGBA32F more restrictive than RGBA16F)
+      maxTexSize = 8192;
+    }
+#endif
+#ifdef MOZ_X11
+    if (mVendor == GLVendor::Nouveau) {
+      // see bug 814716. Clamp MaxCubeMapTextureSize at 2K for Nouveau.
+      maxCubeSize = 2048;
+    } else if (mVendor == GLVendor::Intel) {
+      // Bug 1199923. Driver seems to report a larger max size than
+      // actually supported.
+      maxTexSize = mMaxTextureSize / 2;
+    }
+    // Bug 1367570. Explicitly set vertex attributes [1,3] to opaque
+    // black because Nvidia doesn't do it for us.
+    if (mVendor == GLVendor::NVIDIA) {
+      for (size_t i = 1; i <= 3; ++i) {
+        mSymbols.fVertexAttrib4f(i, 0, 0, 0, 1);
+      }
+    }
+#endif
+    if (Renderer() == GLRenderer::AdrenoTM420) {
+      // see bug 1194923. Calling glFlush before glDeleteFramebuffers
+      // prevents occasional driver crash.
+      mNeedsFlushBeforeDeleteFB = true;
+    }
+#ifdef MOZ_WIDGET_ANDROID
+    if ((Renderer() == GLRenderer::AdrenoTM305 ||
+         Renderer() == GLRenderer::AdrenoTM320 ||
+         Renderer() == GLRenderer::AdrenoTM330) &&
+        jni::GetAPIVersion() < 21) {
+      // Bug 1164027. Driver crashes when functions such as
+      // glTexImage2D fail due to virtual memory exhaustion.
+      mTextureAllocCrashesOnMapFailure = true;
+    }
+#endif
+#if MOZ_WIDGET_ANDROID
+    if (Renderer() == GLRenderer::SGX540 && jni::GetAPIVersion() <= 15) {
+      // Bug 1288446. Driver sometimes crashes when uploading data to a
+      // texture if the render target has changed since the texture was
+      // rendered from. Calling glCheckFramebufferStatus after
+      // glFramebufferTexture2D prevents the crash.
+      mNeedsCheckAfterAttachTextureToFb = true;
+    }
+#endif
+
+    // -
+
+    const auto fnLimit = [&](int* const driver, const int limit) {
+      if (*driver > limit) {
+        *driver = limit;
+        mNeedsTextureSizeChecks = true;
+      }
+    };
+
+    fnLimit(&mMaxTextureSize, maxTexSize);
+    fnLimit(&mMaxRenderbufferSize, maxTexSize);
+
+    maxCubeSize = std::min(maxCubeSize, maxTexSize);
+    fnLimit(&mMaxCubeMapTextureSize, maxCubeSize);
+  }
+
+  if (IsSupported(GLFeature::framebuffer_multisample)) {
+    fGetIntegerv(LOCAL_GL_MAX_SAMPLES, (GLint*)&mMaxSamples);
+  }
+
+  mMaxTexOrRbSize = std::min(mMaxTextureSize, mMaxRenderbufferSize);
+
+  ////////////////////////////////////////////////////////////////////////////
+
+  // We're ready for final setup.
+  fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
+  MOZ_GL_ASSERT(this, IsCurrent());
+
+  if (ShouldSpew() && IsExtensionSupported(KHR_debug)) {
+    fEnable(LOCAL_GL_DEBUG_OUTPUT);
+    fDisable(LOCAL_GL_DEBUG_OUTPUT_SYNCHRONOUS);
+    fDebugMessageCallback(&StaticDebugCallback, (void*)this);
+    fDebugMessageControl(LOCAL_GL_DONT_CARE, LOCAL_GL_DONT_CARE,
+                         LOCAL_GL_DONT_CARE, 0, nullptr, true);
+  }
+
+  return true;
+}
+
+void GLContext::LoadMoreSymbols(const SymbolLoader& loader) {
+  const auto fnLoadForExt = [&](const SymLoadStruct* list, GLExtensions ext) {
+    return this->LoadExtSymbols(loader, list, ext);
+  };
+
+  const auto fnLoadForFeature = [&](const SymLoadStruct* list,
+                                    GLFeature feature) {
+    return this->LoadFeatureSymbols(loader, list, feature);
+  };
+
+  const auto fnLoadFeatureByCore = [&](const SymLoadStruct* coreList,
+                                       const SymLoadStruct* extList,
+                                       GLFeature feature) {
+    const bool useCore = this->IsFeatureProvidedByCoreSymbols(feature);
+    const auto list = useCore ? coreList : extList;
+    return fnLoadForFeature(list, feature);
+  };
+
+  if (IsSupported(GLFeature::robustness)) {
+    const auto resetStrategy =
+        GetIntAs<GLuint>(LOCAL_GL_RESET_NOTIFICATION_STRATEGY);
+    if (resetStrategy != LOCAL_GL_LOSE_CONTEXT_ON_RESET) {
+      NS_WARNING(
+          "Robustness supported, strategy is not LOSE_CONTEXT_ON_RESET!");
+      if (ShouldSpew()) {
+        const bool isDisabled =
+            (resetStrategy == LOCAL_GL_NO_RESET_NOTIFICATION);
+        printf_stderr("Strategy: %s (0x%04x)",
+                      (isDisabled ? "disabled" : "unrecognized"),
+                      resetStrategy);
+      }
+      MarkUnsupported(GLFeature::robustness);
+    }
+  }
+
+  if (IsSupported(GLFeature::sync)) {
+    const SymLoadStruct symbols[] = {
+        CORE_SYMBOL(FenceSync),  CORE_SYMBOL(IsSync),
+        CORE_SYMBOL(DeleteSync), CORE_SYMBOL(ClientWaitSync),
+        CORE_SYMBOL(WaitSync),   CORE_SYMBOL(GetInteger64v),
+        CORE_SYMBOL(GetSynciv),  END_SYMBOLS};
+    fnLoadForFeature(symbols, GLFeature::sync);
+  }
+
+  if (IsExtensionSupported(OES_EGL_image)) {
+    const SymLoadStruct symbols[] = {
+        {(PRFuncPtr*)&mSymbols.fEGLImageTargetTexture2D,
+         {{"glEGLImageTargetTexture2DOES"}}},
+        {(PRFuncPtr*)&mSymbols.fEGLImageTargetRenderbufferStorage,
+         {{"glEGLImageTargetRenderbufferStorageOES"}}},
+        END_SYMBOLS};
+    fnLoadForExt(symbols, OES_EGL_image);
+  }
+
+  if (IsExtensionSupported(APPLE_texture_range)) {
+    const SymLoadStruct symbols[] = {CORE_SYMBOL(TextureRangeAPPLE),
+                                     END_SYMBOLS};
+    fnLoadForExt(symbols, APPLE_texture_range);
+  }
+
+  if (IsExtensionSupported(APPLE_fence)) {
+    const SymLoadStruct symbols[] = {CORE_SYMBOL(FinishObjectAPPLE),
+                                     CORE_SYMBOL(TestObjectAPPLE), END_SYMBOLS};
+    fnLoadForExt(symbols, APPLE_fence);
+  }
+
+  // clang-format off
+
+    if (IsSupported(GLFeature::vertex_array_object)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fIsVertexArray, {{ "glIsVertexArray" }} },
+            { (PRFuncPtr*) &mSymbols.fGenVertexArrays, {{ "glGenVertexArrays" }} },
+            { (PRFuncPtr*) &mSymbols.fBindVertexArray, {{ "glBindVertexArray" }} },
+            { (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, {{ "glDeleteVertexArrays" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fIsVertexArray, {{ "glIsVertexArrayARB", "glIsVertexArrayOES", "glIsVertexArrayAPPLE" }} },
+            { (PRFuncPtr*) &mSymbols.fGenVertexArrays, {{ "glGenVertexArraysARB", "glGenVertexArraysOES", "glGenVertexArraysAPPLE" }} },
+            { (PRFuncPtr*) &mSymbols.fBindVertexArray, {{ "glBindVertexArrayARB", "glBindVertexArrayOES", "glBindVertexArrayAPPLE" }} },
+            { (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, {{ "glDeleteVertexArraysARB", "glDeleteVertexArraysOES", "glDeleteVertexArraysAPPLE" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::vertex_array_object);
+    }
+
+    if (IsSupported(GLFeature::draw_instanced)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fDrawArraysInstanced, {{ "glDrawArraysInstanced" }} },
+            { (PRFuncPtr*) &mSymbols.fDrawElementsInstanced, {{ "glDrawElementsInstanced" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fDrawArraysInstanced, {{ "glDrawArraysInstancedARB", "glDrawArraysInstancedEXT", "glDrawArraysInstancedNV", "glDrawArraysInstancedANGLE" }} },
+            { (PRFuncPtr*) &mSymbols.fDrawElementsInstanced, {{ "glDrawElementsInstancedARB", "glDrawElementsInstancedEXT", "glDrawElementsInstancedNV", "glDrawElementsInstancedANGLE" }}
+            },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_instanced);
+    }
+
+    if (IsSupported(GLFeature::instanced_arrays)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fVertexAttribDivisor, {{ "glVertexAttribDivisor" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fVertexAttribDivisor, {{ "glVertexAttribDivisorARB", "glVertexAttribDivisorNV", "glVertexAttribDivisorANGLE" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::instanced_arrays);
+    }
+
+    if (IsSupported(GLFeature::texture_storage)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fTexStorage2D, {{ "glTexStorage2D" }} },
+            { (PRFuncPtr*) &mSymbols.fTexStorage3D, {{ "glTexStorage3D" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fTexStorage2D, {{ "glTexStorage2DEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fTexStorage3D, {{ "glTexStorage3DEXT" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_storage);
+    }
+
+    if (IsSupported(GLFeature::sampler_objects)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGenSamplers, {{ "glGenSamplers" }} },
+            { (PRFuncPtr*) &mSymbols.fDeleteSamplers, {{ "glDeleteSamplers" }} },
+            { (PRFuncPtr*) &mSymbols.fIsSampler, {{ "glIsSampler" }} },
+            { (PRFuncPtr*) &mSymbols.fBindSampler, {{ "glBindSampler" }} },
+            { (PRFuncPtr*) &mSymbols.fSamplerParameteri, {{ "glSamplerParameteri" }} },
+            { (PRFuncPtr*) &mSymbols.fSamplerParameteriv, {{ "glSamplerParameteriv" }} },
+            { (PRFuncPtr*) &mSymbols.fSamplerParameterf, {{ "glSamplerParameterf" }} },
+            { (PRFuncPtr*) &mSymbols.fSamplerParameterfv, {{ "glSamplerParameterfv" }} },
+            { (PRFuncPtr*) &mSymbols.fGetSamplerParameteriv, {{ "glGetSamplerParameteriv" }} },
+            { (PRFuncPtr*) &mSymbols.fGetSamplerParameterfv, {{ "glGetSamplerParameterfv" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::sampler_objects);
+    }
+
+    // ARB_transform_feedback2/NV_transform_feedback2 is a
+    // superset of EXT_transform_feedback/NV_transform_feedback
+    // and adds glPauseTransformFeedback &
+    // glResumeTransformFeedback, which are required for WebGL2.
+    if (IsSupported(GLFeature::transform_feedback2)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fBindBufferBase, {{ "glBindBufferBase" }} },
+            { (PRFuncPtr*) &mSymbols.fBindBufferRange, {{ "glBindBufferRange" }} },
+            { (PRFuncPtr*) &mSymbols.fGenTransformFeedbacks, {{ "glGenTransformFeedbacks" }} },
+            { (PRFuncPtr*) &mSymbols.fBindTransformFeedback, {{ "glBindTransformFeedback" }} },
+            { (PRFuncPtr*) &mSymbols.fDeleteTransformFeedbacks, {{ "glDeleteTransformFeedbacks" }} },
+            { (PRFuncPtr*) &mSymbols.fIsTransformFeedback, {{ "glIsTransformFeedback" }} },
+            { (PRFuncPtr*) &mSymbols.fBeginTransformFeedback, {{ "glBeginTransformFeedback" }} },
+            { (PRFuncPtr*) &mSymbols.fEndTransformFeedback, {{ "glEndTransformFeedback" }} },
+            { (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings, {{ "glTransformFeedbackVaryings" }} },
+            { (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying, {{ "glGetTransformFeedbackVarying" }} },
+            { (PRFuncPtr*) &mSymbols.fPauseTransformFeedback, {{ "glPauseTransformFeedback" }} },
+            { (PRFuncPtr*) &mSymbols.fResumeTransformFeedback, {{ "glResumeTransformFeedback" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fBindBufferBase, {{ "glBindBufferBaseEXT", "glBindBufferBaseNV" }} },
+            { (PRFuncPtr*) &mSymbols.fBindBufferRange, {{ "glBindBufferRangeEXT", "glBindBufferRangeNV" }} },
+            { (PRFuncPtr*) &mSymbols.fGenTransformFeedbacks, {{ "glGenTransformFeedbacksNV" }} },
+            { (PRFuncPtr*) &mSymbols.fBindTransformFeedback, {{ "glBindTransformFeedbackNV" }} },
+            { (PRFuncPtr*) &mSymbols.fDeleteTransformFeedbacks, {{ "glDeleteTransformFeedbacksNV" }} },
+            { (PRFuncPtr*) &mSymbols.fIsTransformFeedback, {{ "glIsTransformFeedbackNV" }} },
+            { (PRFuncPtr*) &mSymbols.fBeginTransformFeedback, {{ "glBeginTransformFeedbackEXT", "glBeginTransformFeedbackNV" }} },
+            { (PRFuncPtr*) &mSymbols.fEndTransformFeedback, {{ "glEndTransformFeedbackEXT", "glEndTransformFeedbackNV" }} },
+            { (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings, {{ "glTransformFeedbackVaryingsEXT", "glTransformFeedbackVaryingsNV" }} },
+            { (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying, {{ "glGetTransformFeedbackVaryingEXT", "glGetTransformFeedbackVaryingNV" }} },
+            { (PRFuncPtr*) &mSymbols.fPauseTransformFeedback, {{ "glPauseTransformFeedbackNV" }} },
+            { (PRFuncPtr*) &mSymbols.fResumeTransformFeedback, {{ "glResumeTransformFeedbackNV" }} },
+            END_SYMBOLS
+        };
+        if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::transform_feedback2)) {
+            // Also mark bind_buffer_offset as unsupported.
+            MarkUnsupported(GLFeature::bind_buffer_offset);
+        }
+    }
+
+    if (IsSupported(GLFeature::bind_buffer_offset)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fBindBufferOffset, {{ "glBindBufferOffset" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fBindBufferOffset,
+              {{ "glBindBufferOffsetEXT", "glBindBufferOffsetNV" }}
+            },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::bind_buffer_offset);
+    }
+
+    if (IsSupported(GLFeature::query_counter)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fQueryCounter, {{ "glQueryCounter" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fQueryCounter, {{ "glQueryCounterEXT", "glQueryCounterANGLE" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::query_counter);
+    }
+
+    if (IsSupported(GLFeature::query_objects)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fBeginQuery, {{ "glBeginQuery" }} },
+            { (PRFuncPtr*) &mSymbols.fGenQueries, {{ "glGenQueries" }} },
+            { (PRFuncPtr*) &mSymbols.fDeleteQueries, {{ "glDeleteQueries" }} },
+            { (PRFuncPtr*) &mSymbols.fEndQuery, {{ "glEndQuery" }} },
+            { (PRFuncPtr*) &mSymbols.fGetQueryiv, {{ "glGetQueryiv" }} },
+            { (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, {{ "glGetQueryObjectuiv" }} },
+            { (PRFuncPtr*) &mSymbols.fIsQuery, {{ "glIsQuery" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fBeginQuery, {{ "glBeginQueryEXT", "glBeginQueryANGLE" }} },
+            { (PRFuncPtr*) &mSymbols.fGenQueries, {{ "glGenQueriesEXT", "glGenQueriesANGLE" }} },
+            { (PRFuncPtr*) &mSymbols.fDeleteQueries, {{ "glDeleteQueriesEXT", "glDeleteQueriesANGLE" }} },
+            { (PRFuncPtr*) &mSymbols.fEndQuery, {{ "glEndQueryEXT", "glEndQueryANGLE" }} },
+            { (PRFuncPtr*) &mSymbols.fGetQueryiv, {{ "glGetQueryivEXT", "glGetQueryivANGLE" }} },
+            { (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, {{ "glGetQueryObjectuivEXT", "glGetQueryObjectuivANGLE" }} },
+            { (PRFuncPtr*) &mSymbols.fIsQuery, {{ "glIsQueryEXT", "glIsQueryANGLE" }} },
+            END_SYMBOLS
+        };
+        if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::query_objects)) {
+            MarkUnsupported(GLFeature::get_query_object_i64v);
+            MarkUnsupported(GLFeature::get_query_object_iv);
+            MarkUnsupported(GLFeature::occlusion_query);
+            MarkUnsupported(GLFeature::occlusion_query_boolean);
+            MarkUnsupported(GLFeature::occlusion_query2);
+        }
+    }
+
+    if (IsSupported(GLFeature::get_query_object_i64v)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGetQueryObjecti64v, {{ "glGetQueryObjecti64v" }} },
+            { (PRFuncPtr*) &mSymbols.fGetQueryObjectui64v, {{ "glGetQueryObjectui64v" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGetQueryObjecti64v, {{ "glGetQueryObjecti64vEXT", "glGetQueryObjecti64vANGLE" }} },
+            { (PRFuncPtr*) &mSymbols.fGetQueryObjectui64v, {{ "glGetQueryObjectui64vEXT", "glGetQueryObjectui64vANGLE" }} },
+            END_SYMBOLS
+        };
+        if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_query_object_i64v)) {
+            MarkUnsupported(GLFeature::query_counter);
+        }
+    }
+
+    if (IsSupported(GLFeature::get_query_object_iv)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGetQueryObjectiv, {{ "glGetQueryObjectiv" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGetQueryObjectiv, {{ "glGetQueryObjectivEXT", "glGetQueryObjectivANGLE" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_query_object_iv);
+    }
+
+    if (IsSupported(GLFeature::clear_buffers)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fClearBufferfi,  {{ "glClearBufferfi",  }} },
+            { (PRFuncPtr*) &mSymbols.fClearBufferfv,  {{ "glClearBufferfv",  }} },
+            { (PRFuncPtr*) &mSymbols.fClearBufferiv,  {{ "glClearBufferiv",  }} },
+            { (PRFuncPtr*) &mSymbols.fClearBufferuiv, {{ "glClearBufferuiv" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::clear_buffers);
+    }
+
+    if (IsSupported(GLFeature::copy_buffer)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fCopyBufferSubData, {{ "glCopyBufferSubData" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::copy_buffer);
+    }
+
+    if (IsSupported(GLFeature::draw_buffers)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fDrawBuffers, {{ "glDrawBuffers" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fDrawBuffers, {{ "glDrawBuffersARB", "glDrawBuffersEXT" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_buffers);
+    }
+
+    if (IsSupported(GLFeature::draw_buffers_indexed)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fBlendEquationSeparatei, {{ "glBlendEquationSeparatei" }} },
+            { (PRFuncPtr*) &mSymbols.fBlendFuncSeparatei, {{ "glBlendFuncSeparatei" }} },
+            { (PRFuncPtr*) &mSymbols.fColorMaski, {{ "glColorMaski" }} },
+            { (PRFuncPtr*) &mSymbols.fDisablei, {{ "glDisablei" }} },
+            { (PRFuncPtr*) &mSymbols.fEnablei, {{ "glEnablei" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fBlendEquationSeparatei, {{ "glBlendEquationSeparateiOES" }} },
+            { (PRFuncPtr*) &mSymbols.fBlendFuncSeparatei, {{ "glBlendFuncSeparateiOES" }} },
+            { (PRFuncPtr*) &mSymbols.fColorMaski, {{ "glColorMaskiOES" }} },
+            { (PRFuncPtr*) &mSymbols.fDisablei, {{ "glDisableiOES" }} },
+            { (PRFuncPtr*) &mSymbols.fEnablei, {{ "glEnableiOES" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_buffers_indexed);
+    }
+
+    if (IsSupported(GLFeature::get_integer_indexed)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGetIntegeri_v, {{ "glGetIntegeri_v" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] ={
+            { (PRFuncPtr*) &mSymbols.fGetIntegeri_v, {{ "glGetIntegerIndexedvEXT" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_integer_indexed);
+    }
+
+    if (IsSupported(GLFeature::get_integer64_indexed)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGetInteger64i_v, {{ "glGetInteger64i_v" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::get_integer64_indexed);
+    }
+
+    if (IsSupported(GLFeature::gpu_shader4)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGetVertexAttribIiv, {{ "glGetVertexAttribIiv", "glGetVertexAttribIivEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fGetVertexAttribIuiv, {{ "glGetVertexAttribIuiv", "glGetVertexAttribIuivEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fVertexAttribI4i, {{ "glVertexAttribI4i", "glVertexAttribI4iEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fVertexAttribI4iv, {{ "glVertexAttribI4iv", "glVertexAttribI4ivEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fVertexAttribI4ui, {{ "glVertexAttribI4ui", "glVertexAttribI4uiEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fVertexAttribI4uiv, {{ "glVertexAttribI4uiv", "glVertexAttribI4uivEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fVertexAttribIPointer, {{ "glVertexAttribIPointer", "glVertexAttribIPointerEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fUniform1ui,  {{ "glUniform1ui", "glUniform1uiEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fUniform2ui,  {{ "glUniform2ui", "glUniform2uiEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fUniform3ui,  {{ "glUniform3ui", "glUniform3uiEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fUniform4ui,  {{ "glUniform4ui", "glUniform4uiEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fUniform1uiv, {{ "glUniform1uiv", "glUniform1uivEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fUniform2uiv, {{ "glUniform2uiv", "glUniform2uivEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fUniform3uiv, {{ "glUniform3uiv", "glUniform3uivEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fUniform4uiv, {{ "glUniform4uiv", "glUniform4uivEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fGetFragDataLocation, {{ "glGetFragDataLocation", "glGetFragDataLocationEXT" }} },
+            { (PRFuncPtr*) &mSymbols.fGetUniformuiv, {{ "glGetUniformuiv", "glGetUniformuivEXT" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::gpu_shader4);
+    }
+
+    if (IsSupported(GLFeature::map_buffer_range)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fMapBufferRange, {{ "glMapBufferRange" }} },
+            { (PRFuncPtr*) &mSymbols.fFlushMappedBufferRange, {{ "glFlushMappedBufferRange" }} },
+            { (PRFuncPtr*) &mSymbols.fUnmapBuffer, {{ "glUnmapBuffer" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::map_buffer_range);
+    }
+
+    if (IsSupported(GLFeature::texture_3D)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fTexImage3D, {{ "glTexImage3D" }} },
+            { (PRFuncPtr*) &mSymbols.fTexSubImage3D, {{ "glTexSubImage3D" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fTexImage3D, {{ "glTexImage3DOES" }} },
+            { (PRFuncPtr*) &mSymbols.fTexSubImage3D, {{ "glTexSubImage3DOES" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D);
+    }
+
+    if (IsSupported(GLFeature::texture_3D_compressed)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fCompressedTexImage3D, {{ "glCompressedTexImage3D" }} },
+            { (PRFuncPtr*) &mSymbols.fCompressedTexSubImage3D, {{ "glCompressedTexSubImage3D" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fCompressedTexImage3D, {{ "glCompressedTexImage3DARB", "glCompressedTexImage3DOES" }} },
+            { (PRFuncPtr*) &mSymbols.fCompressedTexSubImage3D, {{ "glCompressedTexSubImage3DARB", "glCompressedTexSubImage3DOES" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D_compressed);
+    }
+
+    if (IsSupported(GLFeature::texture_3D_copy)) {
+        const SymLoadStruct coreSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fCopyTexSubImage3D, {{ "glCopyTexSubImage3D" }} },
+            END_SYMBOLS
+        };
+        const SymLoadStruct extSymbols[] = {
+            { (PRFuncPtr*) &mSymbols.fCopyTexSubImage3D, {{ "glCopyTexSubImage3DEXT", "glCopyTexSubImage3DOES" }} },
+            END_SYMBOLS
+        };
+        fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D_copy);
+    }
+
+    if (IsSupported(GLFeature::uniform_buffer_object)) {
+        // Note: Don't query for glGetActiveUniformName because it is not
+        // supported by GL ES 3.
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGetUniformIndices, {{ "glGetUniformIndices" }} },
+            { (PRFuncPtr*) &mSymbols.fGetActiveUniformsiv, {{ "glGetActiveUniformsiv" }} },
+            { (PRFuncPtr*) &mSymbols.fGetUniformBlockIndex, {{ "glGetUniformBlockIndex" }} },
+            { (PRFuncPtr*) &mSymbols.fGetActiveUniformBlockiv, {{ "glGetActiveUniformBlockiv" }} },
+            { (PRFuncPtr*) &mSymbols.fGetActiveUniformBlockName, {{ "glGetActiveUniformBlockName" }} },
+            { (PRFuncPtr*) &mSymbols.fUniformBlockBinding, {{ "glUniformBlockBinding" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::uniform_buffer_object);
+    }
+
+    if (IsSupported(GLFeature::uniform_matrix_nonsquare)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fUniformMatrix2x3fv, {{ "glUniformMatrix2x3fv" }} },
+            { (PRFuncPtr*) &mSymbols.fUniformMatrix2x4fv, {{ "glUniformMatrix2x4fv" }} },
+            { (PRFuncPtr*) &mSymbols.fUniformMatrix3x2fv, {{ "glUniformMatrix3x2fv" }} },
+            { (PRFuncPtr*) &mSymbols.fUniformMatrix3x4fv, {{ "glUniformMatrix3x4fv" }} },
+            { (PRFuncPtr*) &mSymbols.fUniformMatrix4x2fv, {{ "glUniformMatrix4x2fv" }} },
+            { (PRFuncPtr*) &mSymbols.fUniformMatrix4x3fv, {{ "glUniformMatrix4x3fv" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::uniform_matrix_nonsquare);
+    }
+
+    if (IsSupported(GLFeature::internalformat_query)) {
+        const SymLoadStruct symbols[] = {
+            CORE_SYMBOL(GetInternalformativ),
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::internalformat_query);
+    }
+
+    if (IsSupported(GLFeature::invalidate_framebuffer)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fInvalidateFramebuffer,    {{ "glInvalidateFramebuffer" }} },
+            { (PRFuncPtr*) &mSymbols.fInvalidateSubFramebuffer, {{ "glInvalidateSubFramebuffer" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::invalidate_framebuffer);
+    }
+
+    if (IsSupported(GLFeature::multiview)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fFramebufferTextureMultiview, {{
+              "glFramebufferTextureMultiviewOVR",
+              "glFramebufferTextureMultiviewLayeredANGLE"
+            }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::multiview);
+    }
+
+    if (IsSupported(GLFeature::prim_restart)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fPrimitiveRestartIndex,    {{ "glPrimitiveRestartIndex", "glPrimitiveRestartIndexNV" }} },
+            END_SYMBOLS
+        };
+        fnLoadForFeature(symbols, GLFeature::prim_restart);
+    }
+
+    if (IsExtensionSupported(KHR_debug)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fDebugMessageControl,  {{ "glDebugMessageControl",  "glDebugMessageControlKHR", }} },
+            { (PRFuncPtr*) &mSymbols.fDebugMessageInsert,   {{ "glDebugMessageInsert",   "glDebugMessageInsertKHR",  }} },
+            { (PRFuncPtr*) &mSymbols.fDebugMessageCallback, {{ "glDebugMessageCallback", "glDebugMessageCallbackKHR" }} },
+            { (PRFuncPtr*) &mSymbols.fGetDebugMessageLog,   {{ "glGetDebugMessageLog",   "glGetDebugMessageLogKHR",  }} },
+            { (PRFuncPtr*) &mSymbols.fGetPointerv,          {{ "glGetPointerv",          "glGetPointervKHR",         }} },
+            { (PRFuncPtr*) &mSymbols.fPushDebugGroup,       {{ "glPushDebugGroup",       "glPushDebugGroupKHR",      }} },
+            { (PRFuncPtr*) &mSymbols.fPopDebugGroup,        {{ "glPopDebugGroup",        "glPopDebugGroupKHR",       }} },
+            { (PRFuncPtr*) &mSymbols.fObjectLabel,          {{ "glObjectLabel",          "glObjectLabelKHR",         }} },
+            { (PRFuncPtr*) &mSymbols.fGetObjectLabel,       {{ "glGetObjectLabel",       "glGetObjectLabelKHR",      }} },
+            { (PRFuncPtr*) &mSymbols.fObjectPtrLabel,       {{ "glObjectPtrLabel",       "glObjectPtrLabelKHR",      }} },
+            { (PRFuncPtr*) &mSymbols.fGetObjectPtrLabel,    {{ "glGetObjectPtrLabel",    "glGetObjectPtrLabelKHR",   }} },
+            END_SYMBOLS
+        };
+        fnLoadForExt(symbols, KHR_debug);
+    }
+
+    if (IsExtensionSupported(NV_fence)) {
+        const SymLoadStruct symbols[] = {
+            { (PRFuncPtr*) &mSymbols.fGenFences,    {{ "glGenFencesNV"    }} },
+            { (PRFuncPtr*) &mSymbols.fDeleteFences, {{ "glDeleteFencesNV" }} },
+            { (PRFuncPtr*) &mSymbols.fSetFence,     {{ "glSetFenceNV"     }} },
+            { (PRFuncPtr*) &mSymbols.fTestFence,    {{ "glTestFenceNV"    }} },
+            { (PRFuncPtr*) &mSymbols.fFinishFence,  {{ "glFinishFenceNV"  }} },
+            { (PRFuncPtr*) &mSymbols.fIsFence,      {{ "glIsFenceNV"      }} },
+            { (PRFuncPtr*) &mSymbols.fGetFenceiv,   {{ "glGetFenceivNV"   }} },
+            END_SYMBOLS
+        };
+        fnLoadForExt(symbols, NV_fence);
+    }
+
+  // clang-format on
+
+  if (IsExtensionSupported(NV_texture_barrier)) {
+    const SymLoadStruct symbols[] = {
+        {(PRFuncPtr*)&mSymbols.fTextureBarrier, {{"glTextureBarrierNV"}}},
+        END_SYMBOLS};
+    fnLoadForExt(symbols, NV_texture_barrier);
+  }
+
+  if (IsSupported(GLFeature::read_buffer)) {
+    const SymLoadStruct symbols[] = {CORE_SYMBOL(ReadBuffer), END_SYMBOLS};
+    fnLoadForFeature(symbols, GLFeature::read_buffer);
+  }
+
+  if (IsExtensionSupported(APPLE_framebuffer_multisample)) {
+    const SymLoadStruct symbols[] = {
+        CORE_SYMBOL(ResolveMultisampleFramebufferAPPLE), END_SYMBOLS};
+    fnLoadForExt(symbols, APPLE_framebuffer_multisample);
+  }
+
+  if (IsSupported(GLFeature::provoking_vertex)) {
+    const SymLoadStruct symbols[] = {{(PRFuncPtr*)&mSymbols.fProvokingVertex,
+                                      {{
+                                          "glProvokingVertex",
+                                          "glProvokingVertexANGLE",
+                                          "glProvokingVertexEXT",
+                                      }}},
+                                     END_SYMBOLS};
+    fnLoadForFeature(symbols, GLFeature::provoking_vertex);
+  }
+
+  // Load developer symbols, don't fail if we can't find them.
+  const SymLoadStruct devSymbols[] = {CORE_SYMBOL(GetTexImage),
+                                      CORE_SYMBOL(GetTexLevelParameteriv),
+                                      END_SYMBOLS};
+  const bool warnOnFailures = ShouldSpew();
+  (void)loader.LoadSymbols(devSymbols, warnOnFailures);
+}
+
+#undef CORE_SYMBOL
+#undef CORE_EXT_SYMBOL2
+#undef EXT_SYMBOL2
+#undef EXT_SYMBOL3
+#undef END_SYMBOLS
+
+void GLContext::DebugCallback(GLenum source, GLenum type, GLuint id,
+                              GLenum severity, GLsizei length,
+                              const GLchar* message) {
+  nsAutoCString sourceStr;
+  switch (source) {
+    case LOCAL_GL_DEBUG_SOURCE_API:
+      sourceStr = "SOURCE_API"_ns;
+      break;
+    case LOCAL_GL_DEBUG_SOURCE_WINDOW_SYSTEM:
+      sourceStr = "SOURCE_WINDOW_SYSTEM"_ns;
+      break;
+    case LOCAL_GL_DEBUG_SOURCE_SHADER_COMPILER:
+      sourceStr = "SOURCE_SHADER_COMPILER"_ns;
+      break;
+    case LOCAL_GL_DEBUG_SOURCE_THIRD_PARTY:
+      sourceStr = "SOURCE_THIRD_PARTY"_ns;
+      break;
+    case LOCAL_GL_DEBUG_SOURCE_APPLICATION:
+      sourceStr = "SOURCE_APPLICATION"_ns;
+      break;
+    case LOCAL_GL_DEBUG_SOURCE_OTHER:
+      sourceStr = "SOURCE_OTHER"_ns;
+      break;
+    default:
+      sourceStr = nsPrintfCString("<source 0x%04x>", source);
+      break;
+  }
+
+  nsAutoCString typeStr;
+  switch (type) {
+    case LOCAL_GL_DEBUG_TYPE_ERROR:
+      typeStr = "TYPE_ERROR"_ns;
+      break;
+    case LOCAL_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
+      typeStr = "TYPE_DEPRECATED_BEHAVIOR"_ns;
+      break;
+    case LOCAL_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
+      typeStr = "TYPE_UNDEFINED_BEHAVIOR"_ns;
+      break;
+    case LOCAL_GL_DEBUG_TYPE_PORTABILITY:
+      typeStr = "TYPE_PORTABILITY"_ns;
+      break;
+    case LOCAL_GL_DEBUG_TYPE_PERFORMANCE:
+      typeStr = "TYPE_PERFORMANCE"_ns;
+      break;
+    case LOCAL_GL_DEBUG_TYPE_OTHER:
+      typeStr = "TYPE_OTHER"_ns;
+      break;
+    case LOCAL_GL_DEBUG_TYPE_MARKER:
+      typeStr = "TYPE_MARKER"_ns;
+      break;
+    default:
+      typeStr = nsPrintfCString("<type 0x%04x>", type);
+      break;
+  }
+
+  nsAutoCString sevStr;
+  switch (severity) {
+    case LOCAL_GL_DEBUG_SEVERITY_HIGH:
+      sevStr = "SEVERITY_HIGH"_ns;
+      break;
+    case LOCAL_GL_DEBUG_SEVERITY_MEDIUM:
+      sevStr = "SEVERITY_MEDIUM"_ns;
+      break;
+    case LOCAL_GL_DEBUG_SEVERITY_LOW:
+      sevStr = "SEVERITY_LOW"_ns;
+      break;
+    case LOCAL_GL_DEBUG_SEVERITY_NOTIFICATION:
+      sevStr = "SEVERITY_NOTIFICATION"_ns;
+      break;
+    default:
+      sevStr = nsPrintfCString("<severity 0x%04x>", severity);
+      break;
+  }
+
+  printf_stderr("[KHR_debug: 0x%" PRIxPTR "] ID %u: %s, %s, %s:\n    %s\n",
+                (uintptr_t)this, id, sourceStr.BeginReading(),
+                typeStr.BeginReading(), sevStr.BeginReading(), message);
+}
+
+void GLContext::InitExtensions() {
+  MOZ_GL_ASSERT(this, IsCurrent());
+
+  std::vector<nsCString> driverExtensionList;
+
+  [&]() {
+    if (mSymbols.fGetStringi) {
+      GLuint count = 0;
+      if (GetPotentialInteger(LOCAL_GL_NUM_EXTENSIONS, (GLint*)&count)) {
+        for (GLuint i = 0; i < count; i++) {
+          // This is UTF-8.
+          const char* rawExt = (const char*)fGetStringi(LOCAL_GL_EXTENSIONS, i);
+
+          // We CANNOT use nsDependentCString here, because the spec doesn't
+          // guarantee that the pointers returned are different, only that their
+          // contents are. On Flame, each of these index string queries returns
+          // the same address.
+          driverExtensionList.push_back(nsCString(rawExt));
+        }
+        return;
+      }
+    }
+
+    const char* rawExts = (const char*)fGetString(LOCAL_GL_EXTENSIONS);
+    if (rawExts) {
+      nsDependentCString exts(rawExts);
+      SplitByChar(exts, ' ', &driverExtensionList);
+    }
+  }();
+  const auto err = fGetError();
+  MOZ_ALWAYS_TRUE(!IsBadCallError(err));
+
+  const bool shouldDumpExts = ShouldDumpExts();
+  if (shouldDumpExts) {
+    printf_stderr("%i GL driver extensions: (*: recognized)\n",
+                  (uint32_t)driverExtensionList.size());
+  }
+
+  MarkBitfieldByStrings(driverExtensionList, shouldDumpExts, sExtensionNames,
+                        &mAvailableExtensions);
+
+  if (WorkAroundDriverBugs()) {
+    if (Vendor() == GLVendor::Qualcomm) {
+      // Some Adreno drivers do not report GL_OES_EGL_sync, but they really do
+      // support it.
+      MarkExtensionSupported(OES_EGL_sync);
+    }
+
+    if (Vendor() == GLVendor::ATI) {
+      // ATI drivers say this extension exists, but we can't
+      // actually find the EGLImageTargetRenderbufferStorageOES
+      // extension function pointer in the drivers.
+      MarkExtensionUnsupported(OES_EGL_image);
+    }
+
+    if (Vendor() == GLVendor::Imagination && Renderer() == GLRenderer::SGX540) {
+      // Bug 980048
+      MarkExtensionUnsupported(OES_EGL_sync);
+    }
+
+#ifdef MOZ_WIDGET_ANDROID
+    if (Vendor() == GLVendor::Imagination &&
+        Renderer() == GLRenderer::SGX544MP && jni::GetAPIVersion() < 21) {
+      // Bug 1026404
+      MarkExtensionUnsupported(OES_EGL_image);
+      MarkExtensionUnsupported(OES_EGL_image_external);
+    }
+#endif
+
+    if (Vendor() == GLVendor::ARM && (Renderer() == GLRenderer::Mali400MP ||
+                                      Renderer() == GLRenderer::Mali450MP)) {
+      // Bug 1264505
+      MarkExtensionUnsupported(OES_EGL_image_external);
+    }
+
+    if (Renderer() == GLRenderer::AndroidEmulator) {
+      // the Android emulator, which we use to run B2G reftests on,
+      // doesn't expose the OES_rgb8_rgba8 extension, but it seems to
+      // support it (tautologically, as it only runs on desktop GL).
+      MarkExtensionSupported(OES_rgb8_rgba8);
+    }
+
+    if (Vendor() == GLVendor::VMware &&
+        Renderer() == GLRenderer::GalliumLlvmpipe) {
+      // The llvmpipe driver that is used on linux try servers appears to have
+      // buggy support for s3tc/dxt1 compressed textures.
+      // See Bug 975824.
+      MarkExtensionUnsupported(EXT_texture_compression_s3tc);
+      MarkExtensionUnsupported(EXT_texture_compression_dxt1);
+      MarkExtensionUnsupported(ANGLE_texture_compression_dxt3);
+      MarkExtensionUnsupported(ANGLE_texture_compression_dxt5);
+    }
+
+#ifdef XP_MACOSX
+    // Bug 1009642: On OSX Mavericks (10.9), the driver for Intel HD
+    // 3000 appears to be buggy WRT updating sub-images of S3TC
+    // textures with glCompressedTexSubImage2D. Works on Intel HD 4000
+    // and Intel HD 5000/Iris that I tested.
+    // Bug 1124996: Appears to be the same on OSX Yosemite (10.10)
+    if (Renderer() == GLRenderer::IntelHD3000) {
+      MarkExtensionUnsupported(EXT_texture_compression_s3tc);
+    }
+
+    // OSX supports EXT_texture_sRGB in Legacy contexts, but not in Core
+    // contexts. Though EXT_texture_sRGB was included into GL2.1, it *excludes*
+    // the interactions with s3tc. Strictly speaking, you must advertize support
+    // for EXT_texture_sRGB in order to allow for srgb+s3tc on desktop GL. The
+    // omission of EXT_texture_sRGB in OSX Core contexts appears to be a bug.
+    MarkExtensionSupported(EXT_texture_sRGB);
+#endif
+  }
+
+  if (shouldDumpExts) {
+    printf_stderr("\nActivated extensions:\n");
+
+    for (size_t i = 0; i < mAvailableExtensions.size(); i++) {
+      if (!mAvailableExtensions[i]) continue;
+
+      const char* ext = sExtensionNames[i];
+      printf_stderr("[%i] %s\n", (uint32_t)i, ext);
+    }
+  }
+}
+
+void GLContext::PlatformStartup() {
+  RegisterStrongMemoryReporter(new GfxTexturesReporter());
+}
+
+// Common code for checking for both GL extensions and GLX extensions.
+bool GLContext::ListHasExtension(const GLubyte* extensions,
+                                 const char* extension) {
+  // fix bug 612572 - we were crashing as we were calling this function with
+  // extensions==null
+  if (extensions == nullptr || extension == nullptr) return false;
+
+  const GLubyte* start;
+  GLubyte* where;
+  GLubyte* terminator;
+
+  /* Extension names should not have spaces. */
+  where = (GLubyte*)strchr(extension, ' ');
+  if (where || *extension == '\0') return false;
+
+  /*
+   * It takes a bit of care to be fool-proof about parsing the
+   * OpenGL extensions string. Don't be fooled by sub-strings,
+   * etc.
+   */
+  start = extensions;
+  for (;;) {
+    where = (GLubyte*)strstr((const char*)start, extension);
+    if (!where) {
+      break;
+    }
+    terminator = where + strlen(extension);
+    if (where == start || *(where - 1) == ' ') {
+      if (*terminator == ' ' || *terminator == '\0') {
+        return true;
+      }
+    }
+    start = terminator;
+  }
+  return false;
+}
+
+bool GLContext::IsFramebufferComplete(GLuint fb, GLenum* pStatus) {
+  MOZ_ASSERT(fb);
+
+  ScopedBindFramebuffer autoFB(this, fb);
+  MOZ_GL_ASSERT(this, fIsFramebuffer(fb));
+
+  GLenum status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
+  if (pStatus) *pStatus = status;
+
+  return status == LOCAL_GL_FRAMEBUFFER_COMPLETE;
+}
+
+void GLContext::AttachBuffersToFB(GLuint colorTex, GLuint colorRB,
+                                  GLuint depthRB, GLuint stencilRB, GLuint fb,
+                                  GLenum target) {
+  MOZ_ASSERT(fb);
+  MOZ_ASSERT(!(colorTex && colorRB));
+
+  ScopedBindFramebuffer autoFB(this, fb);
+  MOZ_GL_ASSERT(this, fIsFramebuffer(fb));  // It only counts after being bound.
+
+  if (colorTex) {
+    MOZ_GL_ASSERT(this, fIsTexture(colorTex));
+    MOZ_ASSERT(target == LOCAL_GL_TEXTURE_2D ||
+               target == LOCAL_GL_TEXTURE_RECTANGLE_ARB);
+    fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
+                          target, colorTex, 0);
+  } else if (colorRB) {
+    // On the Android 4.3 emulator, IsRenderbuffer may return false incorrectly.
+    MOZ_GL_ASSERT(this, fIsRenderbuffer(colorRB) ||
+                            Renderer() == GLRenderer::AndroidEmulator);
+    fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
+                             LOCAL_GL_RENDERBUFFER, colorRB);
+  }
+
+  if (depthRB) {
+    MOZ_GL_ASSERT(this, fIsRenderbuffer(depthRB) ||
+                            Renderer() == GLRenderer::AndroidEmulator);
+    fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
+                             LOCAL_GL_RENDERBUFFER, depthRB);
+  }
+
+  if (stencilRB) {
+    MOZ_GL_ASSERT(this, fIsRenderbuffer(stencilRB) ||
+                            Renderer() == GLRenderer::AndroidEmulator);
+    fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
+                             LOCAL_GL_RENDERBUFFER, stencilRB);
+  }
+}
+
+bool GLContext::AssembleOffscreenFBs(const GLuint colorMSRB,
+                                     const GLuint depthRB,
+                                     const GLuint stencilRB,
+                                     const GLuint texture, GLuint* drawFB_out,
+                                     GLuint* readFB_out) {
+  if (!colorMSRB && !texture) {
+    MOZ_ASSERT(!depthRB && !stencilRB);
+
+    if (drawFB_out) *drawFB_out = 0;
+    if (readFB_out) *readFB_out = 0;
+
+    return true;
+  }
+
+  ScopedBindFramebuffer autoFB(this);
+
+  GLuint drawFB = 0;
+  GLuint readFB = 0;
+
+  if (texture) {
+    readFB = 0;
+    fGenFramebuffers(1, &readFB);
+    BindFB(readFB);
+    fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
+                          LOCAL_GL_TEXTURE_2D, texture, 0);
+  }
+
+  if (colorMSRB) {
+    drawFB = 0;
+    fGenFramebuffers(1, &drawFB);
+    BindFB(drawFB);
+    fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
+                             LOCAL_GL_RENDERBUFFER, colorMSRB);
+  } else {
+    drawFB = readFB;
+  }
+  MOZ_ASSERT(GetIntAs<GLuint>(LOCAL_GL_FRAMEBUFFER_BINDING) == drawFB);
+
+  if (depthRB) {
+    fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
+                             LOCAL_GL_RENDERBUFFER, depthRB);
+  }
+
+  if (stencilRB) {
+    fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
+                             LOCAL_GL_RENDERBUFFER, stencilRB);
+  }
+
+  // We should be all resized.  Check for framebuffer completeness.
+  GLenum status;
+  bool isComplete = true;
+
+  if (!IsFramebufferComplete(drawFB, &status)) {
+    NS_WARNING("DrawFBO: Incomplete");
+#ifdef MOZ_GL_DEBUG_BUILD
+    if (ShouldSpew()) {
+      printf_stderr("Framebuffer status: %X\n", status);
+    }
+#endif
+    isComplete = false;
+  }
+
+  if (!IsFramebufferComplete(readFB, &status)) {
+    NS_WARNING("ReadFBO: Incomplete");
+#ifdef MOZ_GL_DEBUG_BUILD
+    if (ShouldSpew()) {
+      printf_stderr("Framebuffer status: %X\n", status);
+    }
+#endif
+    isComplete = false;
+  }
+
+  if (drawFB_out) {
+    *drawFB_out = drawFB;
+  } else if (drawFB) {
+    MOZ_CRASH("drawFB created when not requested!");
+  }
+
+  if (readFB_out) {
+    *readFB_out = readFB;
+  } else if (readFB) {
+    MOZ_CRASH("readFB created when not requested!");
+  }
+
+  return isComplete;
+}
+
+void GLContext::MarkDestroyed() {
+  if (IsDestroyed()) return;
+
+  OnMarkDestroyed();
+
+  // Null these before they're naturally nulled after dtor, as we want GLContext
+  // to still be alive in *their* dtors.
+  mBlitHelper = nullptr;
+  mReadTexImageHelper = nullptr;
+
+  mContextLost = true;
+  mSymbols = {};
+}
+
+// -
+
+#ifdef MOZ_GL_DEBUG_BUILD
+/* static */
+void GLContext::AssertNotPassingStackBufferToTheGL(const void* ptr) {
+  int somethingOnTheStack;
+  const void* someStackPtr = &somethingOnTheStack;
+  const int page_bits = 12;
+  intptr_t page = reinterpret_cast<uintptr_t>(ptr) >> page_bits;
+  intptr_t someStackPage =
+      reinterpret_cast<uintptr_t>(someStackPtr) >> page_bits;
+  uintptr_t pageDistance = std::abs(page - someStackPage);
+
+  // Explanation for the "distance <= 1" check here as opposed to just
+  // an equality check.
+  //
+  // Here we assume that pages immediately adjacent to the someStackAddress
+  // page, are also stack pages. That allows to catch the case where the calling
+  // frame put a buffer on the stack, and we just crossed the page boundary.
+  // That is likely to happen, precisely, when using stack arrays. I hit that
+  // specifically with CompositorOGL::Initialize.
+  //
+  // In theory we could be unlucky and wrongly assert here. If that happens,
+  // it will only affect debug builds, and looking at stacks we'll be able to
+  // see that this assert is wrong and revert to the conservative and safe
+  // approach of only asserting when address and someStackAddress are
+  // on the same page.
+  bool isStackAddress = pageDistance <= 1;
+  MOZ_ASSERT(!isStackAddress,
+             "Please don't pass stack arrays to the GL. "
+             "Consider using HeapCopyOfStackArray. "
+             "See bug 1005658.");
+}
+
+void GLContext::CreatedProgram(GLContext* aOrigin, GLuint aName) {
+  mTrackedPrograms.AppendElement(NamedResource(aOrigin, aName));
+}
+
+void GLContext::CreatedShader(GLContext* aOrigin, GLuint aName) {
+  mTrackedShaders.AppendElement(NamedResource(aOrigin, aName));
+}
+
+void GLContext::CreatedBuffers(GLContext* aOrigin, GLsizei aCount,
+                               GLuint* aNames) {
+  for (GLsizei i = 0; i < aCount; ++i) {
+    mTrackedBuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
+  }
+}
+
+void GLContext::CreatedQueries(GLContext* aOrigin, GLsizei aCount,
+                               GLuint* aNames) {
+  for (GLsizei i = 0; i < aCount; ++i) {
+    mTrackedQueries.AppendElement(NamedResource(aOrigin, aNames[i]));
+  }
+}
+
+void GLContext::CreatedTextures(GLContext* aOrigin, GLsizei aCount,
+                                GLuint* aNames) {
+  for (GLsizei i = 0; i < aCount; ++i) {
+    mTrackedTextures.AppendElement(NamedResource(aOrigin, aNames[i]));
+  }
+}
+
+void GLContext::CreatedFramebuffers(GLContext* aOrigin, GLsizei aCount,
+                                    GLuint* aNames) {
+  for (GLsizei i = 0; i < aCount; ++i) {
+    mTrackedFramebuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
+  }
+}
+
+void GLContext::CreatedRenderbuffers(GLContext* aOrigin, GLsizei aCount,
+                                     GLuint* aNames) {
+  for (GLsizei i = 0; i < aCount; ++i) {
+    mTrackedRenderbuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
+  }
+}
+
+static void RemoveNamesFromArray(GLContext* aOrigin, GLsizei aCount,
+                                 const GLuint* aNames,
+                                 nsTArray<GLContext::NamedResource>& aArray) {
+  for (GLsizei j = 0; j < aCount; ++j) {
+    GLuint name = aNames[j];
+    // name 0 can be ignored
+    if (name == 0) continue;
+
+    for (uint32_t i = 0; i < aArray.Length(); ++i) {
+      if (aArray[i].name == name) {
+        aArray.RemoveElementAt(i);
+        break;
+      }
+    }
+  }
+}
+
+void GLContext::DeletedProgram(GLContext* aOrigin, GLuint aName) {
+  RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedPrograms);
+}
+
+void GLContext::DeletedShader(GLContext* aOrigin, GLuint aName) {
+  RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedShaders);
+}
+
+void GLContext::DeletedBuffers(GLContext* aOrigin, GLsizei aCount,
+                               const GLuint* aNames) {
+  RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedBuffers);
+}
+
+void GLContext::DeletedQueries(GLContext* aOrigin, GLsizei aCount,
+                               const GLuint* aNames) {
+  RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedQueries);
+}
+
+void GLContext::DeletedTextures(GLContext* aOrigin, GLsizei aCount,
+                                const GLuint* aNames) {
+  RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedTextures);
+}
+
+void GLContext::DeletedFramebuffers(GLContext* aOrigin, GLsizei aCount,
+                                    const GLuint* aNames) {
+  RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedFramebuffers);
+}
+
+void GLContext::DeletedRenderbuffers(GLContext* aOrigin, GLsizei aCount,
+                                     const GLuint* aNames) {
+  RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedRenderbuffers);
+}
+
+static void MarkContextDestroyedInArray(
+    GLContext* aContext, nsTArray<GLContext::NamedResource>& aArray) {
+  for (uint32_t i = 0; i < aArray.Length(); ++i) {
+    if (aArray[i].origin == aContext) aArray[i].originDeleted = true;
+  }
+}
+
+void GLContext::SharedContextDestroyed(GLContext* aChild) {
+  MarkContextDestroyedInArray(aChild, mTrackedPrograms);
+  MarkContextDestroyedInArray(aChild, mTrackedShaders);
+  MarkContextDestroyedInArray(aChild, mTrackedTextures);
+  MarkContextDestroyedInArray(aChild, mTrackedFramebuffers);
+  MarkContextDestroyedInArray(aChild, mTrackedRenderbuffers);
+  MarkContextDestroyedInArray(aChild, mTrackedBuffers);
+  MarkContextDestroyedInArray(aChild, mTrackedQueries);
+}
+
+static void ReportArrayContents(
+    const char* title, const nsTArray<GLContext::NamedResource>& aArray) {
+  if (aArray.Length() == 0) return;
+
+  printf_stderr("%s:\n", title);
+
+  nsTArray<GLContext::NamedResource> copy(aArray.Clone());
+  copy.Sort();
+
+  GLContext* lastContext = nullptr;
+  for (uint32_t i = 0; i < copy.Length(); ++i) {
+    if (lastContext != copy[i].origin) {
+      if (lastContext) printf_stderr("\n");
+      printf_stderr("  [%p - %s] ", copy[i].origin,
+                    copy[i].originDeleted ? "deleted" : "live");
+      lastContext = copy[i].origin;
+    }
+    printf_stderr("%d ", copy[i].name);
+  }
+  printf_stderr("\n");
+}
+
+void GLContext::ReportOutstandingNames() {
+  if (!ShouldSpew()) return;
+
+  printf_stderr("== GLContext %p Outstanding ==\n", this);
+
+  ReportArrayContents("Outstanding Textures", mTrackedTextures);
+  ReportArrayContents("Outstanding Buffers", mTrackedBuffers);
+  ReportArrayContents("Outstanding Queries", mTrackedQueries);
+  ReportArrayContents("Outstanding Programs", mTrackedPrograms);
+  ReportArrayContents("Outstanding Shaders", mTrackedShaders);
+  ReportArrayContents("Outstanding Framebuffers", mTrackedFramebuffers);
+  ReportArrayContents("Outstanding Renderbuffers", mTrackedRenderbuffers);
+}
+
+#endif  // ifdef MOZ_GL_DEBUG_BUILD
+
+bool GLContext::IsOffscreenSizeAllowed(const IntSize& aSize) const {
+  int32_t biggerDimension = std::max(aSize.width, aSize.height);
+  int32_t maxAllowed = std::min(mMaxRenderbufferSize, mMaxTextureSize);
+  return biggerDimension <= maxAllowed;
+}
+
+bool GLContext::IsValidOwningThread() const {
+  if (!mOwningThreadId) return true;  // Free for all!
+  return PlatformThread::CurrentId() == *mOwningThreadId;
+}
+
+GLBlitHelper* GLContext::BlitHelper() {
+  if (!mBlitHelper) {
+    mBlitHelper.reset(new GLBlitHelper(this));
+  }
+
+  return mBlitHelper.get();
+}
+
+GLReadTexImageHelper* GLContext::ReadTexImageHelper() {
+  if (!mReadTexImageHelper) {
+    mReadTexImageHelper = MakeUnique<GLReadTexImageHelper>(this);
+  }
+
+  return mReadTexImageHelper.get();
+}
+
+void GLContext::FlushIfHeavyGLCallsSinceLastFlush() {
+  if (!mHeavyGLCallsSinceLastFlush) {
+    return;
+  }
+  if (MakeCurrent()) {
+    fFlush();
+  }
+}
+
+/*static*/
+bool GLContext::ShouldDumpExts() { return gfxEnv::MOZ_GL_DUMP_EXTS(); }
+
+bool DoesStringMatch(const char* aString, const char* aWantedString) {
+  if (!aString || !aWantedString) return false;
+
+  const char* occurrence = strstr(aString, aWantedString);
+
+  // aWanted not found
+  if (!occurrence) return false;
+
+  // aWantedString preceded by alpha character
+  if (occurrence != aString && isalpha(*(occurrence - 1))) return false;
+
+  // aWantedVendor followed by alpha character
+  const char* afterOccurrence = occurrence + strlen(aWantedString);
+  if (isalpha(*afterOccurrence)) return false;
+
+  return true;
+}
+
+/*static*/
+bool GLContext::ShouldSpew() { return gfxEnv::MOZ_GL_SPEW(); }
+
+void SplitByChar(const nsACString& str, const char delim,
+                 std::vector<nsCString>* const out) {
+  uint32_t start = 0;
+  while (true) {
+    int32_t end = str.FindChar(' ', start);
+    if (end == -1) break;
+
+    uint32_t len = (uint32_t)end - start;
+    nsDependentCSubstring substr(str, start, len);
+    out->push_back(nsCString(substr));
+
+    start = end + 1;
+  }
+
+  nsDependentCSubstring substr(str, start);
+  out->push_back(nsCString(substr));
+}
+
+void GLContext::fCopyTexImage2D(GLenum target, GLint level,
+                                GLenum internalformat, GLint x, GLint y,
+                                GLsizei width, GLsizei height, GLint border) {
+  if (!IsTextureSizeSafeToPassToDriver(target, width, height)) {
+    // pass wrong values to cause the GL to generate GL_INVALID_VALUE.
+    // See bug 737182 and the comment in IsTextureSizeSafeToPassToDriver.
+    level = -1;
+    width = -1;
+    height = -1;
+    border = -1;
+  }
+
+  BeforeGLReadCall();
+  raw_fCopyTexImage2D(target, level, internalformat, x, y, width, height,
+                      border);
+  AfterGLReadCall();
+}
+
+void GLContext::fGetIntegerv(const GLenum pname, GLint* const params) const {
+  const auto AssertBinding = [&](const char* const name, const GLenum binding,
+                                 const GLuint expected) {
+    if (MOZ_LIKELY(!mDebugFlags)) return;
+    GLuint actual = 0;
+    raw_fGetIntegerv(binding, (GLint*)&actual);
+    if (actual != expected) {
+      gfxCriticalError() << "Misprediction: " << name << " expected "
+                         << expected << ", was " << actual;
+    }
+  };
+
+  switch (pname) {
+    case LOCAL_GL_MAX_TEXTURE_SIZE:
+      MOZ_ASSERT(mMaxTextureSize > 0);
+      *params = mMaxTextureSize;
+      return;
+
+    case LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE:
+      MOZ_ASSERT(mMaxCubeMapTextureSize > 0);
+      *params = mMaxCubeMapTextureSize;
+      return;
+
+    case LOCAL_GL_MAX_RENDERBUFFER_SIZE:
+      MOZ_ASSERT(mMaxRenderbufferSize > 0);
+      *params = mMaxRenderbufferSize;
+      return;
+
+    case LOCAL_GL_VIEWPORT:
+      for (size_t i = 0; i < 4; i++) {
+        params[i] = mViewportRect[i];
+      }
+      return;
+
+    case LOCAL_GL_SCISSOR_BOX:
+      for (size_t i = 0; i < 4; i++) {
+        params[i] = mScissorRect[i];
+      }
+      return;
+
+    case LOCAL_GL_DRAW_FRAMEBUFFER_BINDING:
+      if (mElideDuplicateBindFramebuffers) {
+        static_assert(LOCAL_GL_DRAW_FRAMEBUFFER_BINDING ==
+                      LOCAL_GL_FRAMEBUFFER_BINDING);
+        AssertBinding("GL_DRAW_FRAMEBUFFER_BINDING",
+                      LOCAL_GL_DRAW_FRAMEBUFFER_BINDING, mCachedDrawFb);
+        *params = static_cast<GLint>(mCachedDrawFb);
+        return;
+      }
+      break;
+
+    case LOCAL_GL_READ_FRAMEBUFFER_BINDING:
+      if (mElideDuplicateBindFramebuffers) {
+        if (IsSupported(GLFeature::framebuffer_blit)) {
+          AssertBinding("GL_READ_FRAMEBUFFER_BINDING",
+                        LOCAL_GL_READ_FRAMEBUFFER_BINDING, mCachedReadFb);
+        }
+        *params = static_cast<GLint>(mCachedReadFb);
+        return;
+      }
+      break;
+
+    default:
+      break;
+  }
+  raw_fGetIntegerv(pname, params);
+}
+
+void GLContext::fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
+                            GLenum format, GLenum type, GLvoid* pixels) {
+  BeforeGLReadCall();
+  raw_fReadPixels(x, y, width, height, format, type, pixels);
+  AfterGLReadCall();
+
+  // Check if GL is giving back 1.0 alpha for
+  // RGBA reads to RGBA images from no-alpha buffers.
+#ifdef XP_MACOSX
+  if (WorkAroundDriverBugs() && Vendor() == gl::GLVendor::NVIDIA &&
+      format == LOCAL_GL_RGBA && type == LOCAL_GL_UNSIGNED_BYTE &&
+      !IsCoreProfile() && width && height) {
+    GLint alphaBits = 0;
+    fGetIntegerv(LOCAL_GL_ALPHA_BITS, &alphaBits);
+    if (!alphaBits) {
+      const uint32_t alphaMask = 0xff000000;
+
+      uint32_t* itr = (uint32_t*)pixels;
+      uint32_t testPixel = *itr;
+      if ((testPixel & alphaMask) != alphaMask) {
+        // We need to set the alpha channel to 1.0 manually.
+        uint32_t* itrEnd =
+            itr + width * height;  // Stride is guaranteed to be width*4.
+
+        for (; itr != itrEnd; itr++) {
+          *itr |= alphaMask;
+        }
+      }
+    }
+  }
+#endif
+}
+
+void GLContext::fDeleteFramebuffers(GLsizei n, const GLuint* names) {
+  // Avoid crash by flushing before glDeleteFramebuffers. See bug 1194923.
+  if (mNeedsFlushBeforeDeleteFB) {
+    fFlush();
+  }
+
+  if (n == 1 && *names == 0) {
+    // Deleting framebuffer 0 causes hangs on the DROID. See bug 623228.
+  } else {
+    raw_fDeleteFramebuffers(n, names);
+  }
+  TRACKING_CONTEXT(DeletedFramebuffers(this, n, names));
+}
+
+#ifdef MOZ_WIDGET_ANDROID
+/**
+ * Conservatively estimate whether there is enough available
+ * contiguous virtual address space to map a newly allocated texture.
+ */
+static bool WillTextureMapSucceed(GLsizei width, GLsizei height, GLenum format,
+                                  GLenum type) {
+  bool willSucceed = false;
+  // Some drivers leave large gaps between textures, so require
+  // there to be double the actual size of the texture available.
+  size_t size = width * height * GetBytesPerTexel(format, type) * 2;
+
+  void* p = mmap(nullptr, size, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+  if (p != MAP_FAILED) {
+    willSucceed = true;
+    munmap(p, size);
+  }
+
+  return willSucceed;
+}
+#endif  // MOZ_WIDGET_ANDROID
+
+void GLContext::fTexImage2D(GLenum target, GLint level, GLint internalformat,
+                            GLsizei width, GLsizei height, GLint border,
+                            GLenum format, GLenum type, const GLvoid* pixels) {
+  if (!IsTextureSizeSafeToPassToDriver(target, width, height)) {
+    // pass wrong values to cause the GL to generate GL_INVALID_VALUE.
+    // See bug 737182 and the comment in IsTextureSizeSafeToPassToDriver.
+    level = -1;
+    width = -1;
+    height = -1;
+    border = -1;
+  }
+#if MOZ_WIDGET_ANDROID
+  if (mTextureAllocCrashesOnMapFailure) {
+    // We have no way of knowing whether this texture already has
+    // storage allocated for it, and therefore whether this check
+    // is necessary. We must therefore assume it does not and
+    // always perform the check.
+    if (!WillTextureMapSucceed(width, height, internalformat, type)) {
+      return;
+    }
+  }
+#endif
+  raw_fTexImage2D(target, level, internalformat, width, height, border, format,
+                  type, pixels);
+}
+
+UniquePtr<Texture> CreateTexture(GLContext& gl, const gfx::IntSize& size) {
+  const GLenum target = LOCAL_GL_TEXTURE_2D;
+  const GLenum format = LOCAL_GL_RGBA;
+
+  auto tex = MakeUnique<Texture>(gl);
+  ScopedBindTexture autoTex(&gl, tex->name, target);
+
+  gl.fTexParameteri(target, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
+  gl.fTexParameteri(target, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
+  gl.fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
+  gl.fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
+
+  gl.fTexImage2D(target, 0, format, size.width, size.height, 0, format,
+                 LOCAL_GL_UNSIGNED_BYTE, nullptr);
+
+  return tex;
+}
+
+uint32_t GetBytesPerTexel(GLenum format, GLenum type) {
+  // If there is no defined format or type, we're not taking up any memory
+  if (!format || !type) {
+    return 0;
+  }
+
+  if (format == LOCAL_GL_DEPTH_COMPONENT) {
+    if (type == LOCAL_GL_UNSIGNED_SHORT)
+      return 2;
+    else if (type == LOCAL_GL_UNSIGNED_INT)
+      return 4;
+  } else if (format == LOCAL_GL_DEPTH_STENCIL) {
+    if (type == LOCAL_GL_UNSIGNED_INT_24_8_EXT) return 4;
+  }
+
+  if (type == LOCAL_GL_UNSIGNED_BYTE || type == LOCAL_GL_FLOAT ||
+      type == LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV) {
+    uint32_t multiplier = type == LOCAL_GL_UNSIGNED_BYTE ? 1 : 4;
+    switch (format) {
+      case LOCAL_GL_ALPHA:
+      case LOCAL_GL_LUMINANCE:
+      case LOCAL_GL_R8:
+        return 1 * multiplier;
+      case LOCAL_GL_LUMINANCE_ALPHA:
+      case LOCAL_GL_R16:
+        return 2 * multiplier;
+      case LOCAL_GL_RGB:
+        return 3 * multiplier;
+      case LOCAL_GL_RGBA:
+      case LOCAL_GL_BGRA_EXT:
+        return 4 * multiplier;
+      default:
+        break;
+    }
+  } else if (type == LOCAL_GL_UNSIGNED_SHORT_4_4_4_4 ||
+             type == LOCAL_GL_UNSIGNED_SHORT_5_5_5_1 ||
+             type == LOCAL_GL_UNSIGNED_SHORT_5_6_5 ||
+             type == LOCAL_GL_UNSIGNED_SHORT) {
+    return 2;
+  }
+
+  gfxCriticalError() << "Unknown texture type " << type << " or format "
+                     << format;
+  return 0;
+}
+
+bool GLContext::MakeCurrent(bool aForce) const {
+  if (MOZ_UNLIKELY(IsContextLost())) return false;
+
+  if (MOZ_LIKELY(!aForce)) {
+    bool isCurrent;
+    if (mUseTLSIsCurrent && sCurrentContext.init()) {
+      isCurrent = (sCurrentContext.get() == this);
+    } else {
+      isCurrent = IsCurrentImpl();
+    }
+    if (MOZ_LIKELY(isCurrent)) {
+      MOZ_ASSERT(IsCurrentImpl() ||
+                 !MakeCurrentImpl());  // Might have lost context.
+      return true;
+    }
+  }
+  if (!IsValidOwningThread()) {
+    gfxCriticalError() << "MakeCurrent called on a thread other than the"
+                       << " creating thread!";
+    if (gfxEnv::MOZ_GL_RELEASE_ASSERT_CONTEXT_OWNERSHIP()) {
+      MOZ_CRASH("MOZ_GL_RELEASE_ASSERT_CONTEXT_OWNERSHIP");
+    }
+  }
+  if (!MakeCurrentImpl()) return false;
+
+  if (sCurrentContext.init()) {
+    sCurrentContext.set(this);
+  }
+  return true;
+}
+
+void GLContext::ResetSyncCallCount(const char* resetReason) const {
+  if (ShouldSpew()) {
+    printf_stderr("On %s, mSyncGLCallCount = %" PRIu64 "\n", resetReason,
+                  mSyncGLCallCount);
+  }
+
+  mSyncGLCallCount = 0;
+}
+
+// -
+
+bool CheckContextLost(const GLContext* const gl) {
+  return gl->CheckContextLost();
+}
+
+// -
+
+GLenum GLContext::GetError() const {
+  if (mContextLost) return LOCAL_GL_CONTEXT_LOST;
+
+  if (mImplicitMakeCurrent) {
+    (void)MakeCurrent();
+  }
+
+  const auto fnGetError = [&]() {
+    const auto ret = mSymbols.fGetError();
+    if (ret == LOCAL_GL_CONTEXT_LOST) {
+      OnContextLostError();
+      mTopError = ret;  // Promote to top!
+    }
+    return ret;
+  };
+
+  auto ret = fnGetError();
+
+  {
+    auto flushedErr = ret;
+    uint32_t i = 1;
+    while (flushedErr && !mContextLost) {
+      if (i == 100) {
+        gfxCriticalError() << "Flushing glGetError still "
+                           << gfx::hexa(flushedErr) << " after " << i
+                           << " calls.";
+        break;
+      }
+      flushedErr = fnGetError();
+      i += 1;
+    }
+  }
+
+  if (mTopError) {
+    ret = mTopError;
+    mTopError = 0;
+  }
+
+  if (mDebugFlags & DebugFlagTrace) {
+    const auto errStr = GLErrorToString(ret);
+    printf_stderr("[gl:%p] GetError() -> %s\n", this, errStr.c_str());
+  }
+  return ret;
+}
+
+GLenum GLContext::fGetGraphicsResetStatus() const {
+  OnSyncCall();
+
+  GLenum ret = 0;
+  if (mSymbols.fGetGraphicsResetStatus) {
+    if (mImplicitMakeCurrent) {
+      (void)MakeCurrent();
+    }
+    ret = mSymbols.fGetGraphicsResetStatus();
+  } else {
+    if (!MakeCurrent(true)) {
+      ret = LOCAL_GL_UNKNOWN_CONTEXT_RESET_ARB;
+    }
+  }
+
+  if (mDebugFlags & DebugFlagTrace) {
+    printf_stderr("[gl:%p] GetGraphicsResetStatus() -> 0x%04x\n", this, ret);
+  }
+
+  return ret;
+}
+
+void GLContext::OnContextLostError() const {
+  if (mDebugFlags & DebugFlagTrace) {
+    printf_stderr("[gl:%p] CONTEXT_LOST\n", this);
+  }
+  mContextLost = true;
+}
+
+// --
+
+/*static*/ std::string GLContext::GLErrorToString(const GLenum err) {
+  switch (err) {
+    case LOCAL_GL_NO_ERROR:
+      return "GL_NO_ERROR";
+    case LOCAL_GL_INVALID_ENUM:
+      return "GL_INVALID_ENUM";
+    case LOCAL_GL_INVALID_VALUE:
+      return "GL_INVALID_VALUE";
+    case LOCAL_GL_INVALID_OPERATION:
+      return "GL_INVALID_OPERATION";
+    case LOCAL_GL_STACK_OVERFLOW:
+      return "GL_STACK_OVERFLOW";
+    case LOCAL_GL_STACK_UNDERFLOW:
+      return "GL_STACK_UNDERFLOW";
+    case LOCAL_GL_OUT_OF_MEMORY:
+      return "GL_OUT_OF_MEMORY";
+    case LOCAL_GL_TABLE_TOO_LARGE:
+      return "GL_TABLE_TOO_LARGE";
+    case LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION:
+      return "GL_INVALID_FRAMEBUFFER_OPERATION";
+    case LOCAL_GL_CONTEXT_LOST:
+      return "GL_CONTEXT_LOST";
+  }
+
+  const nsPrintfCString hex("<enum 0x%04x>", err);
+  return hex.BeginReading();
+}
+
+// --
+
+void GLContext::BeforeGLCall_Debug(const char* const funcName) const {
+  MOZ_ASSERT(mDebugFlags);
+
+  if (mDebugFlags & DebugFlagTrace) {
+    printf_stderr("[gl:%p] > %s\n", this, funcName);
+  }
+
+  MOZ_ASSERT(!mDebugErrorScope);
+  mDebugErrorScope.reset(new LocalErrorScope(*this));
+}
+
+void GLContext::AfterGLCall_Debug(const char* const funcName) const {
+  MOZ_ASSERT(mDebugFlags);
+
+  // calling fFinish() immediately after every GL call makes sure that if this
+  // GL command crashes, the stack trace will actually point to it. Otherwise,
+  // OpenGL being an asynchronous API, stack traces tend to be meaningless
+  mSymbols.fFinish();
+
+  const auto err = mDebugErrorScope->GetError();
+  mDebugErrorScope = nullptr;
+  if (!mTopError) {
+    mTopError = err;
+  }
+
+  if (mDebugFlags & DebugFlagTrace) {
+    printf_stderr("[gl:%p] < %s [%s]\n", this, funcName,
+                  GLErrorToString(err).c_str());
+  }
+
+  if (err && !mLocalErrorScopeStack.size()) {
+    const auto errStr = GLErrorToString(err);
+    const auto text = nsPrintfCString("%s: Generated unexpected %s error",
+                                      funcName, errStr.c_str());
+    printf_stderr("[gl:%p] %s.\n", this, text.BeginReading());
+
+    const bool abortOnError = mDebugFlags & DebugFlagAbortOnError;
+    if (abortOnError && err != LOCAL_GL_CONTEXT_LOST) {
+      gfxCriticalErrorOnce() << text.BeginReading();
+      MOZ_CRASH(
+          "Aborting... (Run with MOZ_GL_DEBUG_ABORT_ON_ERROR=0 to disable)");
+    }
+  }
+}
+
+/*static*/
+void GLContext::OnImplicitMakeCurrentFailure(const char* const funcName) {
+  gfxCriticalError() << "Ignoring call to " << funcName << " with failed"
+                     << " mImplicitMakeCurrent.";
+}
+
+bool GLContext::CreateOffscreenDefaultFb(const gfx::IntSize& size) {
+  mOffscreenDefaultFb = MozFramebuffer::Create(this, size, 0, true);
+  return bool(mOffscreenDefaultFb);
+}
+
+// Some of Mesa's drivers allocate heap memory when loaded and don't
+// free it when unloaded; this causes Leak Sanitizer to detect leaks and
+// fail to unwind the stack, so suppressions don't work.  This
+// workaround leaks a reference to the driver library so that it's never
+// unloaded.  Because the leak isn't significant for real usage, only
+// ASan runs in CI, this is applied only to the software renderer.
+//
+// See bug 1702394 for more details.
+void MesaMemoryLeakWorkaround() {
+#if defined(XP_LINUX) && !defined(ANDROID)
+  Maybe<nsAutoCString> foundPath;
+
+  dl_iterate_phdr(
+      [](dl_phdr_info* info, size_t size, void* data) {
+        auto& foundPath = *reinterpret_cast<Maybe<nsAutoCString>*>(data);
+        nsDependentCString thisPath(info->dlpi_name);
+        if (StringEndsWith(thisPath, "/swrast_dri.so"_ns)) {
+          foundPath.emplace(thisPath);
+          return 1;
+        }
+        return 0;
+      },
+      &foundPath);
+
+  if (foundPath) {
+    // Deliberately leak to prevent unload
+    Unused << dlopen(foundPath->get(), RTLD_LAZY);
+  }
+#endif  // XP_LINUX but not ANDROID
+}
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/GLContext.h b/gfx/gl/GLContext.h
new file mode 100644
index 0000000000..d88b96019f
--- /dev/null
+++ b/gfx/gl/GLContext.h
@@ -0,0 +1,3880 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXT_H_
+#define GLCONTEXT_H_
+
+#include <bitset>
+#include <stdint.h>
+#include <stdio.h>
+#include <stack>
+#include <vector>
+
+#ifdef DEBUG
+#  include <string.h>
+#endif
+
+#ifdef GetClassName
+#  undef GetClassName
+#endif
+
+// Define MOZ_GL_DEBUG_BUILD unconditionally to enable GL debugging in opt
+// builds.
+#ifdef DEBUG
+#  define MOZ_GL_DEBUG_BUILD 1
+#endif
+
+#include "mozilla/IntegerRange.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/ThreadLocal.h"
+
+#include "MozFramebuffer.h"
+#include "nsTArray.h"
+#include "GLConsts.h"
+#include "GLDefs.h"
+#include "GLTypes.h"
+#include "GLVendor.h"
+#include "nsRegionFwd.h"
+#include "nsString.h"
+#include "GLContextTypes.h"
+#include "GLContextSymbols.h"
+#include "base/platform_thread.h"  // for PlatformThreadId
+#include "mozilla/GenericRefCounted.h"
+#include "mozilla/WeakPtr.h"
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "mozilla/ProfilerLabels.h"
+#endif
+
+namespace mozilla {
+
+namespace gl {
+class GLBlitHelper;
+class GLLibraryEGL;
+class GLReadTexImageHelper;
+class SharedSurface;
+class SymbolLoader;
+struct SymLoadStruct;
+}  // namespace gl
+
+namespace layers {
+class ColorTextureLayerProgram;
+}  // namespace layers
+
+namespace widget {
+class CompositorWidget;
+}  // namespace widget
+}  // namespace mozilla
+
+namespace mozilla {
+namespace gl {
+
+enum class GLFeature {
+  bind_buffer_offset,
+  blend_minmax,
+  clear_buffers,
+  copy_buffer,
+  depth_texture,
+  draw_buffers,
+  draw_buffers_indexed,
+  draw_instanced,
+  element_index_uint,
+  ES2_compatibility,
+  ES3_compatibility,
+  EXT_color_buffer_float,
+  frag_color_float,
+  frag_depth,
+  framebuffer_blit,
+  framebuffer_multisample,
+  framebuffer_object,
+  framebuffer_object_EXT_OES,
+  get_integer_indexed,
+  get_integer64_indexed,
+  get_query_object_i64v,
+  get_query_object_iv,
+  gpu_shader4,
+  instanced_arrays,
+  instanced_non_arrays,
+  internalformat_query,
+  invalidate_framebuffer,
+  map_buffer_range,
+  multiview,
+  occlusion_query,
+  occlusion_query_boolean,
+  occlusion_query2,
+  packed_depth_stencil,
+  prim_restart,
+  prim_restart_fixed,
+  provoking_vertex,
+  query_counter,
+  query_objects,
+  query_time_elapsed,
+  read_buffer,
+  renderbuffer_color_float,
+  renderbuffer_color_half_float,
+  robust_buffer_access_behavior,
+  robustness,
+  sRGB,
+  sampler_objects,
+  seamless_cube_map_opt_in,
+  shader_texture_lod,
+  split_framebuffer,
+  standard_derivatives,
+  sync,
+  texture_3D,
+  texture_3D_compressed,
+  texture_3D_copy,
+  texture_compression_bptc,
+  texture_compression_rgtc,
+  texture_float,
+  texture_float_linear,
+  texture_half_float,
+  texture_half_float_linear,
+  texture_non_power_of_two,
+  texture_norm16,
+  texture_rg,
+  texture_storage,
+  texture_swizzle,
+  transform_feedback2,
+  uniform_buffer_object,
+  uniform_matrix_nonsquare,
+  vertex_array_object,
+  EnumMax
+};
+
+enum class ContextProfile : uint8_t {
+  Unknown = 0,
+  OpenGLCore,
+  OpenGLCompatibility,
+  OpenGLES
+};
+
+enum class GLRenderer {
+  Adreno200,
+  Adreno205,
+  AdrenoTM200,
+  AdrenoTM205,
+  AdrenoTM305,
+  AdrenoTM320,
+  AdrenoTM330,
+  AdrenoTM420,
+  Mali400MP,
+  Mali450MP,
+  MaliT,
+  SGX530,
+  SGX540,
+  SGX544MP,
+  Tegra,
+  AndroidEmulator,
+  GalliumLlvmpipe,
+  IntelHD3000,
+  MicrosoftBasicRenderDriver,
+  Other
+};
+
+class GLContext : public GenericAtomicRefCounted, public SupportsWeakPtr {
+ public:
+  static MOZ_THREAD_LOCAL(const GLContext*) sCurrentContext;
+
+  const GLContextDesc mDesc;
+
+  bool mImplicitMakeCurrent = false;
+  bool mUseTLSIsCurrent;
+
+  class TlsScope final {
+    const WeakPtr<GLContext> mGL;
+    const bool mWasTlsOk;
+
+   public:
+    explicit TlsScope(GLContext* const gl)
+        : mGL(gl), mWasTlsOk(gl && gl->mUseTLSIsCurrent) {
+      if (mGL) {
+        mGL->mUseTLSIsCurrent = true;
+      }
+    }
+
+    ~TlsScope() {
+      if (mGL) {
+        mGL->mUseTLSIsCurrent = mWasTlsOk;
+      }
+    }
+  };
+
+  // -----------------------------------------------------------------------------
+  // basic getters
+ public:
+  /**
+   * Returns true if the context is using ANGLE. This should only be overridden
+   * for an ANGLE implementation.
+   */
+  virtual bool IsANGLE() const { return false; }
+
+  /**
+   * Returns true if the context is using WARP. This should only be overridden
+   * for an ANGLE implementation.
+   */
+  virtual bool IsWARP() const { return false; }
+
+  virtual void GetWSIInfo(nsCString* const out) const = 0;
+
+  /**
+   * Return true if we are running on a OpenGL core profile context
+   */
+  inline bool IsCoreProfile() const {
+    MOZ_ASSERT(mProfile != ContextProfile::Unknown, "unknown context profile");
+
+    return mProfile == ContextProfile::OpenGLCore;
+  }
+
+  /**
+   * Return true if we are running on a OpenGL compatibility profile context
+   * (legacy profile 2.1 on Max OS X)
+   */
+  inline bool IsCompatibilityProfile() const {
+    MOZ_ASSERT(mProfile != ContextProfile::Unknown, "unknown context profile");
+
+    return mProfile == ContextProfile::OpenGLCompatibility;
+  }
+
+  inline bool IsGLES() const {
+    MOZ_ASSERT(mProfile != ContextProfile::Unknown, "unknown context profile");
+
+    return mProfile == ContextProfile::OpenGLES;
+  }
+
+  inline bool IsAtLeast(ContextProfile profile, unsigned int version) const {
+    MOZ_ASSERT(profile != ContextProfile::Unknown,
+               "IsAtLeast: bad <profile> parameter");
+    MOZ_ASSERT(mProfile != ContextProfile::Unknown, "unknown context profile");
+    MOZ_ASSERT(mVersion != 0, "unknown context version");
+
+    if (version > mVersion) {
+      return false;
+    }
+
+    return profile == mProfile;
+  }
+
+  /**
+   * Return the version of the context.
+   * Example :
+   *   If this a OpenGL 2.1, that will return 210
+   */
+  inline uint32_t Version() const { return mVersion; }
+
+  inline uint32_t ShadingLanguageVersion() const {
+    return mShadingLanguageVersion;
+  }
+
+  GLVendor Vendor() const { return mVendor; }
+  GLRenderer Renderer() const { return mRenderer; }
+  bool IsMesa() const { return mIsMesa; }
+
+  bool IsContextLost() const { return mContextLost; }
+
+  bool CheckContextLost() const {
+    mTopError = GetError();
+    return IsContextLost();
+  }
+
+  bool HasPBOState() const { return (!IsGLES() || Version() >= 300); }
+
+  /**
+   * If this context is double-buffered, returns TRUE.
+   */
+  virtual bool IsDoubleBuffered() const { return false; }
+
+  virtual GLContextType GetContextType() const = 0;
+
+  virtual bool IsCurrentImpl() const = 0;
+  virtual bool MakeCurrentImpl() const = 0;
+
+  bool IsCurrent() const {
+    if (mImplicitMakeCurrent) return MakeCurrent();
+
+    return IsCurrentImpl();
+  }
+
+  bool MakeCurrent(bool aForce = false) const;
+
+  /**
+   * Get the default framebuffer for this context.
+   */
+  UniquePtr<MozFramebuffer> mOffscreenDefaultFb;
+
+  bool CreateOffscreenDefaultFb(const gfx::IntSize& size);
+
+  virtual GLuint GetDefaultFramebuffer() {
+    if (mOffscreenDefaultFb) {
+      return mOffscreenDefaultFb->mFB;
+    }
+    return 0;
+  }
+
+  /**
+   * mVersion store the OpenGL's version, multiplied by 100. For example, if
+   * the context is an OpenGL 2.1 context, mVersion value will be 210.
+   */
+  uint32_t mVersion = 0;
+  ContextProfile mProfile = ContextProfile::Unknown;
+
+  uint32_t mShadingLanguageVersion = 0;
+
+  GLVendor mVendor = GLVendor::Other;
+  GLRenderer mRenderer = GLRenderer::Other;
+  bool mIsMesa = false;
+
+  // -----------------------------------------------------------------------------
+  // Extensions management
+  /**
+   * This mechanism is designed to know if an extension is supported. In the
+   * long term, we would like to only use the extension group queries XXX_* to
+   * have full compatibility with context version and profiles (especialy the
+   * core that officialy don't bring any extensions).
+   */
+
+  /**
+   * Known GL extensions that can be queried by
+   * IsExtensionSupported.  The results of this are cached, and as
+   * such it's safe to use this even in performance critical code.
+   * If you add to this array, remember to add to the string names
+   * in GLContext.cpp.
+   */
+  enum GLExtensions {
+    Extension_None = 0,
+    AMD_compressed_ATC_texture,
+    ANGLE_depth_texture,
+    ANGLE_framebuffer_blit,
+    ANGLE_framebuffer_multisample,
+    ANGLE_instanced_arrays,
+    ANGLE_multiview,
+    ANGLE_provoking_vertex,
+    ANGLE_texture_compression_dxt3,
+    ANGLE_texture_compression_dxt5,
+    ANGLE_timer_query,
+    APPLE_client_storage,
+    APPLE_fence,
+    APPLE_framebuffer_multisample,
+    APPLE_sync,
+    APPLE_texture_range,
+    APPLE_vertex_array_object,
+    ARB_ES2_compatibility,
+    ARB_ES3_compatibility,
+    ARB_color_buffer_float,
+    ARB_compatibility,
+    ARB_copy_buffer,
+    ARB_depth_texture,
+    ARB_draw_buffers,
+    ARB_draw_instanced,
+    ARB_framebuffer_object,
+    ARB_framebuffer_sRGB,
+    ARB_geometry_shader4,
+    ARB_half_float_pixel,
+    ARB_instanced_arrays,
+    ARB_internalformat_query,
+    ARB_invalidate_subdata,
+    ARB_map_buffer_range,
+    ARB_occlusion_query2,
+    ARB_pixel_buffer_object,
+    ARB_provoking_vertex,
+    ARB_robust_buffer_access_behavior,
+    ARB_robustness,
+    ARB_sampler_objects,
+    ARB_seamless_cube_map,
+    ARB_shader_texture_lod,
+    ARB_sync,
+    ARB_texture_compression,
+    ARB_texture_compression_bptc,
+    ARB_texture_compression_rgtc,
+    ARB_texture_float,
+    ARB_texture_non_power_of_two,
+    ARB_texture_rectangle,
+    ARB_texture_rg,
+    ARB_texture_storage,
+    ARB_texture_swizzle,
+    ARB_timer_query,
+    ARB_transform_feedback2,
+    ARB_uniform_buffer_object,
+    ARB_vertex_array_object,
+    CHROMIUM_color_buffer_float_rgb,
+    CHROMIUM_color_buffer_float_rgba,
+    EXT_bgra,
+    EXT_blend_minmax,
+    EXT_color_buffer_float,
+    EXT_color_buffer_half_float,
+    EXT_copy_texture,
+    EXT_disjoint_timer_query,
+    EXT_draw_buffers,
+    EXT_draw_buffers2,
+    EXT_draw_instanced,
+    EXT_float_blend,
+    EXT_frag_depth,
+    EXT_framebuffer_blit,
+    EXT_framebuffer_multisample,
+    EXT_framebuffer_object,
+    EXT_framebuffer_sRGB,
+    EXT_gpu_shader4,
+    EXT_map_buffer_range,
+    EXT_multisampled_render_to_texture,
+    EXT_occlusion_query_boolean,
+    EXT_packed_depth_stencil,
+    EXT_provoking_vertex,
+    EXT_read_format_bgra,
+    EXT_robustness,
+    EXT_sRGB,
+    EXT_sRGB_write_control,
+    EXT_shader_texture_lod,
+    EXT_texture_compression_bptc,
+    EXT_texture_compression_dxt1,
+    EXT_texture_compression_rgtc,
+    EXT_texture_compression_s3tc,
+    EXT_texture_compression_s3tc_srgb,
+    EXT_texture_filter_anisotropic,
+    EXT_texture_format_BGRA8888,
+    EXT_texture_norm16,
+    EXT_texture_sRGB,
+    EXT_texture_storage,
+    EXT_timer_query,
+    EXT_transform_feedback,
+    EXT_unpack_subimage,
+    IMG_read_format,
+    IMG_texture_compression_pvrtc,
+    IMG_texture_npot,
+    KHR_debug,
+    KHR_parallel_shader_compile,
+    KHR_robust_buffer_access_behavior,
+    KHR_robustness,
+    KHR_texture_compression_astc_hdr,
+    KHR_texture_compression_astc_ldr,
+    NV_draw_instanced,
+    NV_fence,
+    NV_framebuffer_blit,
+    NV_geometry_program4,
+    NV_half_float,
+    NV_instanced_arrays,
+    NV_primitive_restart,
+    NV_texture_barrier,
+    NV_transform_feedback,
+    NV_transform_feedback2,
+    OES_EGL_image,
+    OES_EGL_image_external,
+    OES_EGL_sync,
+    OES_compressed_ETC1_RGB8_texture,
+    OES_depth24,
+    OES_depth32,
+    OES_depth_texture,
+    OES_draw_buffers_indexed,
+    OES_element_index_uint,
+    OES_fbo_render_mipmap,
+    OES_framebuffer_object,
+    OES_packed_depth_stencil,
+    OES_rgb8_rgba8,
+    OES_standard_derivatives,
+    OES_stencil8,
+    OES_texture_3D,
+    OES_texture_float,
+    OES_texture_float_linear,
+    OES_texture_half_float,
+    OES_texture_half_float_linear,
+    OES_texture_npot,
+    OES_vertex_array_object,
+    OVR_multiview2,
+    Extensions_Max,
+    Extensions_End
+  };
+
+  bool IsExtensionSupported(GLExtensions aKnownExtension) const {
+    return mAvailableExtensions[aKnownExtension];
+  }
+
+ protected:
+  void MarkExtensionUnsupported(GLExtensions aKnownExtension) {
+    mAvailableExtensions[aKnownExtension] = 0;
+  }
+
+  void MarkExtensionSupported(GLExtensions aKnownExtension) {
+    mAvailableExtensions[aKnownExtension] = 1;
+  }
+
+  std::bitset<Extensions_Max> mAvailableExtensions;
+
+  // -----------------------------------------------------------------------------
+  // Feature queries
+  /*
+   * This mecahnism introduces a new way to check if a OpenGL feature is
+   * supported, regardless of whether it is supported by an extension or
+   * natively by the context version/profile
+   */
+ public:
+  bool IsSupported(GLFeature feature) const {
+    return mAvailableFeatures[size_t(feature)];
+  }
+
+  static const char* GetFeatureName(GLFeature feature);
+
+ private:
+  std::bitset<size_t(GLFeature::EnumMax)> mAvailableFeatures;
+
+  /**
+   * Init features regarding OpenGL extension and context version and profile
+   */
+  void InitFeatures();
+
+  /**
+   * Mark the feature and associated extensions as unsupported
+   */
+  void MarkUnsupported(GLFeature feature);
+
+  /**
+   * Is this feature supported using the core (unsuffixed) symbols?
+   */
+  bool IsFeatureProvidedByCoreSymbols(GLFeature feature);
+
+  // -----------------------------------------------------------------------------
+  // Error handling
+
+ private:
+  mutable bool mContextLost = false;
+  mutable GLenum mTopError = 0;
+
+ protected:
+  void OnContextLostError() const;
+
+ public:
+  static std::string GLErrorToString(GLenum aError);
+
+  static bool IsBadCallError(const GLenum err) {
+    return !(err == 0 || err == LOCAL_GL_CONTEXT_LOST);
+  }
+
+  class LocalErrorScope;
+
+ private:
+  mutable std::stack<const LocalErrorScope*> mLocalErrorScopeStack;
+  mutable UniquePtr<LocalErrorScope> mDebugErrorScope;
+
+  ////////////////////////////////////
+  // Use this safer option.
+
+ public:
+  class LocalErrorScope {
+    const GLContext& mGL;
+    GLenum mOldTop;
+    bool mHasBeenChecked;
+
+   public:
+    explicit LocalErrorScope(const GLContext& gl)
+        : mGL(gl), mHasBeenChecked(false) {
+      mGL.mLocalErrorScopeStack.push(this);
+      mOldTop = mGL.GetError();
+    }
+
+    /// Never returns CONTEXT_LOST.
+    GLenum GetError() {
+      MOZ_ASSERT(!mHasBeenChecked);
+      mHasBeenChecked = true;
+
+      const auto ret = mGL.GetError();
+      if (ret == LOCAL_GL_CONTEXT_LOST) return 0;
+      return ret;
+    }
+
+    ~LocalErrorScope() {
+      MOZ_ASSERT(mHasBeenChecked);
+
+      MOZ_ASSERT(!IsBadCallError(mGL.GetError()));
+
+      MOZ_ASSERT(mGL.mLocalErrorScopeStack.top() == this);
+      mGL.mLocalErrorScopeStack.pop();
+
+      mGL.mTopError = mOldTop;
+    }
+  };
+
+  // -
+
+  bool GetPotentialInteger(GLenum pname, GLint* param) {
+    LocalErrorScope localError(*this);
+
+    fGetIntegerv(pname, param);
+
+    GLenum err = localError.GetError();
+    MOZ_ASSERT_IF(err != LOCAL_GL_NO_ERROR, err == LOCAL_GL_INVALID_ENUM);
+    return err == LOCAL_GL_NO_ERROR;
+  }
+
+  void DebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity,
+                     GLsizei length, const GLchar* message);
+
+ private:
+  static void GLAPIENTRY StaticDebugCallback(GLenum source, GLenum type,
+                                             GLuint id, GLenum severity,
+                                             GLsizei length,
+                                             const GLchar* message,
+                                             const GLvoid* userParam);
+
+  // -----------------------------------------------------------------------------
+  // Debugging implementation
+ private:
+#ifndef MOZ_FUNCTION_NAME
+#  ifdef __GNUC__
+#    define MOZ_FUNCTION_NAME __PRETTY_FUNCTION__
+#  elif defined(_MSC_VER)
+#    define MOZ_FUNCTION_NAME __FUNCTION__
+#  else
+#    define MOZ_FUNCTION_NAME \
+      __func__  // defined in C99, supported in various C++ compilers. Just raw
+                // function name.
+#  endif
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+// Record the name of the GL call for better hang stacks on Android.
+#  define ANDROID_ONLY_PROFILER_LABEL AUTO_PROFILER_LABEL(__func__, GRAPHICS);
+#else
+#  define ANDROID_ONLY_PROFILER_LABEL
+#endif
+
+#define BEFORE_GL_CALL                               \
+  ANDROID_ONLY_PROFILER_LABEL                        \
+  if (MOZ_LIKELY(BeforeGLCall(MOZ_FUNCTION_NAME))) { \
+    do {                                             \
+  } while (0)
+
+#define AFTER_GL_CALL             \
+  AfterGLCall(MOZ_FUNCTION_NAME); \
+  }                               \
+  do {                            \
+  } while (0)
+
+  void BeforeGLCall_Debug(const char* funcName) const;
+  void AfterGLCall_Debug(const char* funcName) const;
+  static void OnImplicitMakeCurrentFailure(const char* funcName);
+
+  bool BeforeGLCall(const char* const funcName) const {
+    if (mImplicitMakeCurrent) {
+      if (MOZ_UNLIKELY(!MakeCurrent())) {
+        if (!mContextLost) {
+          OnImplicitMakeCurrentFailure(funcName);
+        }
+        return false;
+      }
+    }
+    MOZ_GL_ASSERT(this, IsCurrentImpl());
+
+    if (MOZ_UNLIKELY(mDebugFlags)) {
+      BeforeGLCall_Debug(funcName);
+    }
+    return true;
+  }
+
+  void AfterGLCall(const char* const funcName) const {
+    if (MOZ_UNLIKELY(mDebugFlags)) {
+      AfterGLCall_Debug(funcName);
+    }
+  }
+
+  GLContext* TrackingContext() {
+    GLContext* tip = this;
+    while (tip->mSharedContext) tip = tip->mSharedContext;
+    return tip;
+  }
+
+  static void AssertNotPassingStackBufferToTheGL(const void* ptr);
+
+#ifdef MOZ_GL_DEBUG_BUILD
+
+#  define TRACKING_CONTEXT(a) \
+    do {                      \
+      TrackingContext()->a;   \
+    } while (0)
+
+#  define ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(ptr) \
+    AssertNotPassingStackBufferToTheGL(ptr)
+
+#  define ASSERT_SYMBOL_PRESENT(func)                                    \
+    do {                                                                 \
+      MOZ_ASSERT(strstr(MOZ_FUNCTION_NAME, #func) != nullptr,            \
+                 "Mismatched symbol check.");                            \
+      if (MOZ_UNLIKELY(!mSymbols.func)) {                                \
+        printf_stderr("RUNTIME ASSERT: Uninitialized GL function: %s\n", \
+                      #func);                                            \
+        MOZ_CRASH("GFX: Uninitialized GL function");                     \
+      }                                                                  \
+    } while (0)
+
+#else  // ifdef MOZ_GL_DEBUG_BUILD
+
+#  define TRACKING_CONTEXT(a) \
+    do {                      \
+    } while (0)
+#  define ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(ptr) \
+    do {                                             \
+    } while (0)
+#  define ASSERT_SYMBOL_PRESENT(func) \
+    do {                              \
+    } while (0)
+
+#endif  // ifdef MOZ_GL_DEBUG_BUILD
+
+  // Do whatever setup is necessary to draw to our offscreen FBO, if it's
+  // bound.
+  void BeforeGLDrawCall() {}
+
+  // Do whatever tear-down is necessary after drawing to our offscreen FBO,
+  // if it's bound.
+  void AfterGLDrawCall() { mHeavyGLCallsSinceLastFlush = true; }
+
+  // Do whatever setup is necessary to read from our offscreen FBO, if it's
+  // bound.
+  void BeforeGLReadCall() {}
+
+  // Do whatever tear-down is necessary after reading from our offscreen FBO,
+  // if it's bound.
+  void AfterGLReadCall() {}
+
+ public:
+  void OnSyncCall() const { mSyncGLCallCount++; }
+
+  uint64_t GetSyncCallCount() const { return mSyncGLCallCount; }
+
+  void ResetSyncCallCount(const char* resetReason) const;
+
+  // -----------------------------------------------------------------------------
+  // GL official entry points
+ public:
+  // We smash all errors together, so you never have to loop on this. We
+  // guarantee that immediately after this call, there are no errors left.
+  // Always returns the top-most error, except if followed by CONTEXT_LOST, then
+  // return that instead.
+  GLenum GetError() const;
+
+  GLenum fGetError() { return GetError(); }
+
+  GLenum fGetGraphicsResetStatus() const;
+
+  // -
+
+  void fActiveTexture(GLenum texture) {
+    BEFORE_GL_CALL;
+    mSymbols.fActiveTexture(texture);
+    AFTER_GL_CALL;
+  }
+
+  void fAttachShader(GLuint program, GLuint shader) {
+    BEFORE_GL_CALL;
+    mSymbols.fAttachShader(program, shader);
+    AFTER_GL_CALL;
+  }
+
+  void fBeginQuery(GLenum target, GLuint id) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBeginQuery);
+    mSymbols.fBeginQuery(target, id);
+    AFTER_GL_CALL;
+  }
+
+  void fBindAttribLocation(GLuint program, GLuint index, const GLchar* name) {
+    BEFORE_GL_CALL;
+    mSymbols.fBindAttribLocation(program, index, name);
+    AFTER_GL_CALL;
+  }
+
+  void fBindBuffer(GLenum target, GLuint buffer) {
+    BEFORE_GL_CALL;
+    mSymbols.fBindBuffer(target, buffer);
+    AFTER_GL_CALL;
+  }
+
+  void fInvalidateFramebuffer(GLenum target, GLsizei numAttachments,
+                              const GLenum* attachments) {
+    BeforeGLDrawCall();
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fInvalidateFramebuffer);
+    mSymbols.fInvalidateFramebuffer(target, numAttachments, attachments);
+    AFTER_GL_CALL;
+    AfterGLDrawCall();
+  }
+
+  void fInvalidateSubFramebuffer(GLenum target, GLsizei numAttachments,
+                                 const GLenum* attachments, GLint x, GLint y,
+                                 GLsizei width, GLsizei height) {
+    BeforeGLDrawCall();
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fInvalidateSubFramebuffer);
+    mSymbols.fInvalidateSubFramebuffer(target, numAttachments, attachments, x,
+                                       y, width, height);
+    AFTER_GL_CALL;
+    AfterGLDrawCall();
+  }
+
+  void fBindTexture(GLenum target, GLuint texture) {
+    BEFORE_GL_CALL;
+    mSymbols.fBindTexture(target, texture);
+    AFTER_GL_CALL;
+  }
+
+  void fBlendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) {
+    BEFORE_GL_CALL;
+    mSymbols.fBlendColor(red, green, blue, alpha);
+    AFTER_GL_CALL;
+  }
+
+  void fBlendEquation(GLenum mode) {
+    BEFORE_GL_CALL;
+    mSymbols.fBlendEquation(mode);
+    AFTER_GL_CALL;
+  }
+
+  void fBlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha) {
+    BEFORE_GL_CALL;
+    mSymbols.fBlendEquationSeparate(modeRGB, modeAlpha);
+    AFTER_GL_CALL;
+  }
+
+  void fBlendFunc(GLenum sfactor, GLenum dfactor) {
+    BEFORE_GL_CALL;
+    mSymbols.fBlendFunc(sfactor, dfactor);
+    AFTER_GL_CALL;
+  }
+
+  void fBlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB,
+                          GLenum sfactorAlpha, GLenum dfactorAlpha) {
+    BEFORE_GL_CALL;
+    mSymbols.fBlendFuncSeparate(sfactorRGB, dfactorRGB, sfactorAlpha,
+                                dfactorAlpha);
+    AFTER_GL_CALL;
+  }
+
+ private:
+  void raw_fBufferData(GLenum target, GLsizeiptr size, const GLvoid* data,
+                       GLenum usage) {
+    ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(data);
+    BEFORE_GL_CALL;
+    mSymbols.fBufferData(target, size, data, usage);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = true;
+  }
+
+ public:
+  void fBufferData(GLenum target, GLsizeiptr size, const GLvoid* data,
+                   GLenum usage) {
+    raw_fBufferData(target, size, data, usage);
+
+    // bug 744888
+    if (WorkAroundDriverBugs() && !data && Vendor() == GLVendor::NVIDIA) {
+      UniquePtr<char[]> buf = MakeUnique<char[]>(1);
+      buf[0] = 0;
+      fBufferSubData(target, size - 1, 1, buf.get());
+    }
+  }
+
+  void fBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size,
+                      const GLvoid* data) {
+    ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(data);
+    BEFORE_GL_CALL;
+    mSymbols.fBufferSubData(target, offset, size, data);
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = true;
+  }
+
+ private:
+  void raw_fClear(GLbitfield mask) {
+    BEFORE_GL_CALL;
+    mSymbols.fClear(mask);
+    AFTER_GL_CALL;
+  }
+
+ public:
+  void fClear(GLbitfield mask) {
+    BeforeGLDrawCall();
+    raw_fClear(mask);
+    AfterGLDrawCall();
+  }
+
+  void fClearBufferfi(GLenum buffer, GLint drawbuffer, GLfloat depth,
+                      GLint stencil) {
+    BeforeGLDrawCall();
+    BEFORE_GL_CALL;
+    mSymbols.fClearBufferfi(buffer, drawbuffer, depth, stencil);
+    AFTER_GL_CALL;
+    AfterGLDrawCall();
+  }
+
+  void fClearBufferfv(GLenum buffer, GLint drawbuffer, const GLfloat* value) {
+    BeforeGLDrawCall();
+    BEFORE_GL_CALL;
+    mSymbols.fClearBufferfv(buffer, drawbuffer, value);
+    AFTER_GL_CALL;
+    AfterGLDrawCall();
+  }
+
+  void fClearBufferiv(GLenum buffer, GLint drawbuffer, const GLint* value) {
+    BeforeGLDrawCall();
+    BEFORE_GL_CALL;
+    mSymbols.fClearBufferiv(buffer, drawbuffer, value);
+    AFTER_GL_CALL;
+    AfterGLDrawCall();
+  }
+
+  void fClearBufferuiv(GLenum buffer, GLint drawbuffer, const GLuint* value) {
+    BeforeGLDrawCall();
+    BEFORE_GL_CALL;
+    mSymbols.fClearBufferuiv(buffer, drawbuffer, value);
+    AFTER_GL_CALL;
+    AfterGLDrawCall();
+  }
+
+  void fClearColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a) {
+    BEFORE_GL_CALL;
+    mSymbols.fClearColor(r, g, b, a);
+    AFTER_GL_CALL;
+  }
+
+  void fClearStencil(GLint s) {
+    BEFORE_GL_CALL;
+    mSymbols.fClearStencil(s);
+    AFTER_GL_CALL;
+  }
+
+  void fClientActiveTexture(GLenum texture) {
+    BEFORE_GL_CALL;
+    mSymbols.fClientActiveTexture(texture);
+    AFTER_GL_CALL;
+  }
+
+  void fColorMask(realGLboolean red, realGLboolean green, realGLboolean blue,
+                  realGLboolean alpha) {
+    BEFORE_GL_CALL;
+    mSymbols.fColorMask(red, green, blue, alpha);
+    AFTER_GL_CALL;
+  }
+
+  void fCompressedTexImage2D(GLenum target, GLint level, GLenum internalformat,
+                             GLsizei width, GLsizei height, GLint border,
+                             GLsizei imageSize, const GLvoid* pixels) {
+    ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(pixels);
+    BEFORE_GL_CALL;
+    mSymbols.fCompressedTexImage2D(target, level, internalformat, width, height,
+                                   border, imageSize, pixels);
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = true;
+  }
+
+  void fCompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset,
+                                GLint yoffset, GLsizei width, GLsizei height,
+                                GLenum format, GLsizei imageSize,
+                                const GLvoid* pixels) {
+    ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(pixels);
+    BEFORE_GL_CALL;
+    mSymbols.fCompressedTexSubImage2D(target, level, xoffset, yoffset, width,
+                                      height, format, imageSize, pixels);
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = true;
+  }
+
+  void fCopyTexImage2D(GLenum target, GLint level, GLenum internalformat,
+                       GLint x, GLint y, GLsizei width, GLsizei height,
+                       GLint border);
+
+  void fCopyTexSubImage2D(GLenum target, GLint level, GLint xoffset,
+                          GLint yoffset, GLint x, GLint y, GLsizei width,
+                          GLsizei height) {
+    BeforeGLReadCall();
+    raw_fCopyTexSubImage2D(target, level, xoffset, yoffset, x, y, width,
+                           height);
+    AfterGLReadCall();
+  }
+
+  void fCullFace(GLenum mode) {
+    BEFORE_GL_CALL;
+    mSymbols.fCullFace(mode);
+    AFTER_GL_CALL;
+  }
+
+  void fDebugMessageCallback(GLDEBUGPROC callback, const GLvoid* userParam) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDebugMessageCallback);
+    mSymbols.fDebugMessageCallback(callback, userParam);
+    AFTER_GL_CALL;
+  }
+
+  void fDebugMessageControl(GLenum source, GLenum type, GLenum severity,
+                            GLsizei count, const GLuint* ids,
+                            realGLboolean enabled) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDebugMessageControl);
+    mSymbols.fDebugMessageControl(source, type, severity, count, ids, enabled);
+    AFTER_GL_CALL;
+  }
+
+  void fDebugMessageInsert(GLenum source, GLenum type, GLuint id,
+                           GLenum severity, GLsizei length, const GLchar* buf) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDebugMessageInsert);
+    mSymbols.fDebugMessageInsert(source, type, id, severity, length, buf);
+    AFTER_GL_CALL;
+  }
+
+  void fDetachShader(GLuint program, GLuint shader) {
+    BEFORE_GL_CALL;
+    mSymbols.fDetachShader(program, shader);
+    AFTER_GL_CALL;
+  }
+
+  void fDepthFunc(GLenum func) {
+    BEFORE_GL_CALL;
+    mSymbols.fDepthFunc(func);
+    AFTER_GL_CALL;
+  }
+
+  void fDepthMask(realGLboolean flag) {
+    BEFORE_GL_CALL;
+    mSymbols.fDepthMask(flag);
+    AFTER_GL_CALL;
+  }
+
+  void fDisable(GLenum capability) {
+    BEFORE_GL_CALL;
+    mSymbols.fDisable(capability);
+    AFTER_GL_CALL;
+  }
+
+  void fDisableClientState(GLenum capability) {
+    BEFORE_GL_CALL;
+    mSymbols.fDisableClientState(capability);
+    AFTER_GL_CALL;
+  }
+
+  void fDisableVertexAttribArray(GLuint index) {
+    BEFORE_GL_CALL;
+    mSymbols.fDisableVertexAttribArray(index);
+    AFTER_GL_CALL;
+  }
+
+  void fDrawBuffer(GLenum mode) {
+    BEFORE_GL_CALL;
+    mSymbols.fDrawBuffer(mode);
+    AFTER_GL_CALL;
+  }
+
+ private:
+  void raw_fDrawArrays(GLenum mode, GLint first, GLsizei count) {
+    BEFORE_GL_CALL;
+    mSymbols.fDrawArrays(mode, first, count);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fDrawElements(GLenum mode, GLsizei count, GLenum type,
+                         const GLvoid* indices) {
+    BEFORE_GL_CALL;
+    mSymbols.fDrawElements(mode, count, type, indices);
+    AFTER_GL_CALL;
+  }
+
+ public:
+  void fDrawArrays(GLenum mode, GLint first, GLsizei count) {
+    BeforeGLDrawCall();
+    raw_fDrawArrays(mode, first, count);
+    AfterGLDrawCall();
+  }
+
+  void fDrawElements(GLenum mode, GLsizei count, GLenum type,
+                     const GLvoid* indices) {
+    BeforeGLDrawCall();
+    raw_fDrawElements(mode, count, type, indices);
+    AfterGLDrawCall();
+  }
+
+  void fEnable(GLenum capability) {
+    BEFORE_GL_CALL;
+    mSymbols.fEnable(capability);
+    AFTER_GL_CALL;
+  }
+
+  void fEnableClientState(GLenum capability) {
+    BEFORE_GL_CALL;
+    mSymbols.fEnableClientState(capability);
+    AFTER_GL_CALL;
+  }
+
+  void fEnableVertexAttribArray(GLuint index) {
+    BEFORE_GL_CALL;
+    mSymbols.fEnableVertexAttribArray(index);
+    AFTER_GL_CALL;
+  }
+
+  void fEndQuery(GLenum target) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fEndQuery);
+    mSymbols.fEndQuery(target);
+    AFTER_GL_CALL;
+  }
+
+  void fFinish() {
+    BEFORE_GL_CALL;
+    mSymbols.fFinish();
+    OnSyncCall();
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = false;
+  }
+
+  void fFlush() {
+    BEFORE_GL_CALL;
+    mSymbols.fFlush();
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = false;
+  }
+
+  void fFrontFace(GLenum face) {
+    BEFORE_GL_CALL;
+    mSymbols.fFrontFace(face);
+    AFTER_GL_CALL;
+  }
+
+  void fGetActiveAttrib(GLuint program, GLuint index, GLsizei maxLength,
+                        GLsizei* length, GLint* size, GLenum* type,
+                        GLchar* name) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetActiveAttrib(program, index, maxLength, length, size, type,
+                              name);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetActiveUniform(GLuint program, GLuint index, GLsizei maxLength,
+                         GLsizei* length, GLint* size, GLenum* type,
+                         GLchar* name) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetActiveUniform(program, index, maxLength, length, size, type,
+                               name);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetAttachedShaders(GLuint program, GLsizei maxCount, GLsizei* count,
+                           GLuint* shaders) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetAttachedShaders(program, maxCount, count, shaders);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  GLint fGetAttribLocation(GLuint program, const GLchar* name) {
+    GLint retval = 0;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fGetAttribLocation(program, name);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+ private:
+  void raw_fGetIntegerv(GLenum pname, GLint* params) const {
+    BEFORE_GL_CALL;
+    mSymbols.fGetIntegerv(pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+ public:
+  void fGetIntegerv(GLenum pname, GLint* params) const;
+
+  template <typename T>
+  void GetInt(const GLenum pname, T* const params) const {
+    static_assert(sizeof(T) == sizeof(GLint), "Invalid T.");
+    fGetIntegerv(pname, reinterpret_cast<GLint*>(params));
+  }
+
+  void GetUIntegerv(GLenum pname, GLuint* params) const {
+    GetInt(pname, params);
+  }
+
+  template <typename T>
+  T GetIntAs(GLenum pname) const {
+    static_assert(sizeof(T) == sizeof(GLint), "Invalid T.");
+    T ret = 0;
+    fGetIntegerv(pname, (GLint*)&ret);
+    return ret;
+  }
+
+  void fGetFloatv(GLenum pname, GLfloat* params) const {
+    BEFORE_GL_CALL;
+    mSymbols.fGetFloatv(pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetBooleanv(GLenum pname, realGLboolean* params) const {
+    BEFORE_GL_CALL;
+    mSymbols.fGetBooleanv(pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetBufferParameteriv(GLenum target, GLenum pname, GLint* params) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetBufferParameteriv(target, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  GLuint fGetDebugMessageLog(GLuint count, GLsizei bufsize, GLenum* sources,
+                             GLenum* types, GLuint* ids, GLenum* severities,
+                             GLsizei* lengths, GLchar* messageLog) {
+    GLuint ret = 0;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetDebugMessageLog);
+    ret = mSymbols.fGetDebugMessageLog(count, bufsize, sources, types, ids,
+                                       severities, lengths, messageLog);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  void fGetPointerv(GLenum pname, GLvoid** params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetPointerv);
+    mSymbols.fGetPointerv(pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetObjectLabel(GLenum identifier, GLuint name, GLsizei bufSize,
+                       GLsizei* length, GLchar* label) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetObjectLabel);
+    mSymbols.fGetObjectLabel(identifier, name, bufSize, length, label);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetObjectPtrLabel(const GLvoid* ptr, GLsizei bufSize, GLsizei* length,
+                          GLchar* label) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetObjectPtrLabel);
+    mSymbols.fGetObjectPtrLabel(ptr, bufSize, length, label);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGenerateMipmap(GLenum target) {
+    BEFORE_GL_CALL;
+    mSymbols.fGenerateMipmap(target);
+    AFTER_GL_CALL;
+  }
+
+  void fGetProgramiv(GLuint program, GLenum pname, GLint* param) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetProgramiv(program, pname, param);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetProgramInfoLog(GLuint program, GLsizei bufSize, GLsizei* length,
+                          GLchar* infoLog) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetProgramInfoLog(program, bufSize, length, infoLog);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fTexParameteri(GLenum target, GLenum pname, GLint param) {
+    BEFORE_GL_CALL;
+    mSymbols.fTexParameteri(target, pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fTexParameteriv(GLenum target, GLenum pname, const GLint* params) {
+    BEFORE_GL_CALL;
+    mSymbols.fTexParameteriv(target, pname, params);
+    AFTER_GL_CALL;
+  }
+
+  void fTexParameterf(GLenum target, GLenum pname, GLfloat param) {
+    BEFORE_GL_CALL;
+    mSymbols.fTexParameterf(target, pname, param);
+    AFTER_GL_CALL;
+  }
+
+  const GLubyte* fGetString(GLenum name) {
+    const GLubyte* result = nullptr;
+    BEFORE_GL_CALL;
+    result = mSymbols.fGetString(name);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return result;
+  }
+
+  void fGetTexImage(GLenum target, GLint level, GLenum format, GLenum type,
+                    GLvoid* img) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetTexImage);
+    mSymbols.fGetTexImage(target, level, format, type, img);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetTexLevelParameteriv(GLenum target, GLint level, GLenum pname,
+                               GLint* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetTexLevelParameteriv);
+    mSymbols.fGetTexLevelParameteriv(target, level, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetTexParameterfv(GLenum target, GLenum pname, GLfloat* params) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetTexParameterfv(target, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetTexParameteriv(GLenum target, GLenum pname, GLint* params) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetTexParameteriv(target, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetUniformfv(GLuint program, GLint location, GLfloat* params) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetUniformfv(program, location, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetUniformiv(GLuint program, GLint location, GLint* params) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetUniformiv(program, location, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetUniformuiv(GLuint program, GLint location, GLuint* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetUniformuiv);
+    mSymbols.fGetUniformuiv(program, location, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  GLint fGetUniformLocation(GLuint programObj, const GLchar* name) {
+    GLint retval = 0;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fGetUniformLocation(programObj, name);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  void fGetVertexAttribfv(GLuint index, GLenum pname, GLfloat* retval) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetVertexAttribfv(index, pname, retval);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetVertexAttribiv(GLuint index, GLenum pname, GLint* retval) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetVertexAttribiv(index, pname, retval);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetVertexAttribPointerv(GLuint index, GLenum pname, GLvoid** retval) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetVertexAttribPointerv(index, pname, retval);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fHint(GLenum target, GLenum mode) {
+    BEFORE_GL_CALL;
+    mSymbols.fHint(target, mode);
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fIsBuffer(GLuint buffer) {
+    realGLboolean retval = false;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fIsBuffer(buffer);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  realGLboolean fIsEnabled(GLenum capability) {
+    realGLboolean retval = false;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fIsEnabled(capability);
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  void SetEnabled(const GLenum cap, const bool val) {
+    if (val) {
+      fEnable(cap);
+    } else {
+      fDisable(cap);
+    }
+  }
+
+  bool PushEnabled(const GLenum cap, const bool newVal) {
+    const bool oldVal = fIsEnabled(cap);
+    if (oldVal != newVal) {
+      SetEnabled(cap, newVal);
+    }
+    return oldVal;
+  }
+
+  realGLboolean fIsProgram(GLuint program) {
+    realGLboolean retval = false;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fIsProgram(program);
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  realGLboolean fIsShader(GLuint shader) {
+    realGLboolean retval = false;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fIsShader(shader);
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  realGLboolean fIsTexture(GLuint texture) {
+    realGLboolean retval = false;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fIsTexture(texture);
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  void fLineWidth(GLfloat width) {
+    BEFORE_GL_CALL;
+    mSymbols.fLineWidth(width);
+    AFTER_GL_CALL;
+  }
+
+  void fLinkProgram(GLuint program) {
+    BEFORE_GL_CALL;
+    mSymbols.fLinkProgram(program);
+    AFTER_GL_CALL;
+  }
+
+  void fObjectLabel(GLenum identifier, GLuint name, GLsizei length,
+                    const GLchar* label) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fObjectLabel);
+    mSymbols.fObjectLabel(identifier, name, length, label);
+    AFTER_GL_CALL;
+  }
+
+  void fObjectPtrLabel(const GLvoid* ptr, GLsizei length, const GLchar* label) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fObjectPtrLabel);
+    mSymbols.fObjectPtrLabel(ptr, length, label);
+    AFTER_GL_CALL;
+  }
+
+  void fLoadIdentity() {
+    BEFORE_GL_CALL;
+    mSymbols.fLoadIdentity();
+    AFTER_GL_CALL;
+  }
+
+  void fLoadMatrixf(const GLfloat* matrix) {
+    BEFORE_GL_CALL;
+    mSymbols.fLoadMatrixf(matrix);
+    AFTER_GL_CALL;
+  }
+
+  void fMatrixMode(GLenum mode) {
+    BEFORE_GL_CALL;
+    mSymbols.fMatrixMode(mode);
+    AFTER_GL_CALL;
+  }
+
+  void fPixelStorei(GLenum pname, GLint param) {
+    BEFORE_GL_CALL;
+    mSymbols.fPixelStorei(pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fTextureRangeAPPLE(GLenum target, GLsizei length, GLvoid* pointer) {
+    ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(pointer);
+    BEFORE_GL_CALL;
+    mSymbols.fTextureRangeAPPLE(target, length, pointer);
+    AFTER_GL_CALL;
+  }
+
+  void fPointParameterf(GLenum pname, GLfloat param) {
+    BEFORE_GL_CALL;
+    mSymbols.fPointParameterf(pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fPolygonMode(GLenum face, GLenum mode) {
+    BEFORE_GL_CALL;
+    mSymbols.fPolygonMode(face, mode);
+    AFTER_GL_CALL;
+  }
+
+  void fPolygonOffset(GLfloat factor, GLfloat bias) {
+    BEFORE_GL_CALL;
+    mSymbols.fPolygonOffset(factor, bias);
+    AFTER_GL_CALL;
+  }
+
+  void fPopDebugGroup() {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fPopDebugGroup);
+    mSymbols.fPopDebugGroup();
+    AFTER_GL_CALL;
+  }
+
+  void fPushDebugGroup(GLenum source, GLuint id, GLsizei length,
+                       const GLchar* message) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fPushDebugGroup);
+    mSymbols.fPushDebugGroup(source, id, length, message);
+    AFTER_GL_CALL;
+  }
+
+  void fReadBuffer(GLenum mode) {
+    BEFORE_GL_CALL;
+    mSymbols.fReadBuffer(mode);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
+                       GLenum format, GLenum type, GLvoid* pixels) {
+    BEFORE_GL_CALL;
+    mSymbols.fReadPixels(x, y, width, height, format, type, pixels);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = true;
+  }
+
+  void fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
+                   GLenum format, GLenum type, GLvoid* pixels);
+
+ public:
+  void fSampleCoverage(GLclampf value, realGLboolean invert) {
+    BEFORE_GL_CALL;
+    mSymbols.fSampleCoverage(value, invert);
+    AFTER_GL_CALL;
+  }
+
+  void fScissor(GLint x, GLint y, GLsizei width, GLsizei height) {
+    if (mScissorRect[0] == x && mScissorRect[1] == y &&
+        mScissorRect[2] == width && mScissorRect[3] == height) {
+      return;
+    }
+    mScissorRect[0] = x;
+    mScissorRect[1] = y;
+    mScissorRect[2] = width;
+    mScissorRect[3] = height;
+    BEFORE_GL_CALL;
+    mSymbols.fScissor(x, y, width, height);
+    AFTER_GL_CALL;
+  }
+
+  void fStencilFunc(GLenum func, GLint reference, GLuint mask) {
+    BEFORE_GL_CALL;
+    mSymbols.fStencilFunc(func, reference, mask);
+    AFTER_GL_CALL;
+  }
+
+  void fStencilFuncSeparate(GLenum frontfunc, GLenum backfunc, GLint reference,
+                            GLuint mask) {
+    BEFORE_GL_CALL;
+    mSymbols.fStencilFuncSeparate(frontfunc, backfunc, reference, mask);
+    AFTER_GL_CALL;
+  }
+
+  void fStencilMask(GLuint mask) {
+    BEFORE_GL_CALL;
+    mSymbols.fStencilMask(mask);
+    AFTER_GL_CALL;
+  }
+
+  void fStencilMaskSeparate(GLenum face, GLuint mask) {
+    BEFORE_GL_CALL;
+    mSymbols.fStencilMaskSeparate(face, mask);
+    AFTER_GL_CALL;
+  }
+
+  void fStencilOp(GLenum fail, GLenum zfail, GLenum zpass) {
+    BEFORE_GL_CALL;
+    mSymbols.fStencilOp(fail, zfail, zpass);
+    AFTER_GL_CALL;
+  }
+
+  void fStencilOpSeparate(GLenum face, GLenum sfail, GLenum dpfail,
+                          GLenum dppass) {
+    BEFORE_GL_CALL;
+    mSymbols.fStencilOpSeparate(face, sfail, dpfail, dppass);
+    AFTER_GL_CALL;
+  }
+
+  void fTexGeni(GLenum coord, GLenum pname, GLint param) {
+    BEFORE_GL_CALL;
+    mSymbols.fTexGeni(coord, pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fTexGenf(GLenum coord, GLenum pname, GLfloat param) {
+    BEFORE_GL_CALL;
+    mSymbols.fTexGenf(coord, pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fTexGenfv(GLenum coord, GLenum pname, const GLfloat* params) {
+    BEFORE_GL_CALL;
+    mSymbols.fTexGenfv(coord, pname, params);
+    AFTER_GL_CALL;
+  }
+
+ private:
+  void raw_fTexImage2D(GLenum target, GLint level, GLint internalformat,
+                       GLsizei width, GLsizei height, GLint border,
+                       GLenum format, GLenum type, const GLvoid* pixels) {
+    ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(pixels);
+    BEFORE_GL_CALL;
+    mSymbols.fTexImage2D(target, level, internalformat, width, height, border,
+                         format, type, pixels);
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = true;
+  }
+
+ public:
+  void fTexImage2D(GLenum target, GLint level, GLint internalformat,
+                   GLsizei width, GLsizei height, GLint border, GLenum format,
+                   GLenum type, const GLvoid* pixels);
+
+  void fTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                      GLsizei width, GLsizei height, GLenum format, GLenum type,
+                      const GLvoid* pixels) {
+    ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL(pixels);
+    BEFORE_GL_CALL;
+    mSymbols.fTexSubImage2D(target, level, xoffset, yoffset, width, height,
+                            format, type, pixels);
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = true;
+  }
+
+  void fUniform1f(GLint location, GLfloat v0) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform1f(location, v0);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform1fv(GLint location, GLsizei count, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform1fv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform1i(GLint location, GLint v0) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform1i(location, v0);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform1iv(GLint location, GLsizei count, const GLint* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform1iv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform2f(GLint location, GLfloat v0, GLfloat v1) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform2f(location, v0, v1);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform2fv(GLint location, GLsizei count, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform2fv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform2i(GLint location, GLint v0, GLint v1) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform2i(location, v0, v1);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform2iv(GLint location, GLsizei count, const GLint* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform2iv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform3f(GLint location, GLfloat v0, GLfloat v1, GLfloat v2) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform3f(location, v0, v1, v2);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform3fv(GLint location, GLsizei count, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform3fv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform3i(GLint location, GLint v0, GLint v1, GLint v2) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform3i(location, v0, v1, v2);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform3iv(GLint location, GLsizei count, const GLint* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform3iv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform4f(GLint location, GLfloat v0, GLfloat v1, GLfloat v2,
+                  GLfloat v3) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform4f(location, v0, v1, v2, v3);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform4fv(GLint location, GLsizei count, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform4fv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform4i(GLint location, GLint v0, GLint v1, GLint v2, GLint v3) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform4i(location, v0, v1, v2, v3);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform4iv(GLint location, GLsizei count, const GLint* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniform4iv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix2fv(GLint location, GLsizei count, realGLboolean transpose,
+                         const GLfloat* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniformMatrix2fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix2x3fv(GLint location, GLsizei count,
+                           realGLboolean transpose, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniformMatrix2x3fv);
+    mSymbols.fUniformMatrix2x3fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix2x4fv(GLint location, GLsizei count,
+                           realGLboolean transpose, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniformMatrix2x4fv);
+    mSymbols.fUniformMatrix2x4fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix3fv(GLint location, GLsizei count, realGLboolean transpose,
+                         const GLfloat* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniformMatrix3fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix3x2fv(GLint location, GLsizei count,
+                           realGLboolean transpose, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniformMatrix3x2fv);
+    mSymbols.fUniformMatrix3x2fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix3x4fv(GLint location, GLsizei count,
+                           realGLboolean transpose, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniformMatrix3x4fv);
+    mSymbols.fUniformMatrix3x4fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix4fv(GLint location, GLsizei count, realGLboolean transpose,
+                         const GLfloat* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fUniformMatrix4fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix4x2fv(GLint location, GLsizei count,
+                           realGLboolean transpose, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniformMatrix4x2fv);
+    mSymbols.fUniformMatrix4x2fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniformMatrix4x3fv(GLint location, GLsizei count,
+                           realGLboolean transpose, const GLfloat* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniformMatrix4x3fv);
+    mSymbols.fUniformMatrix4x3fv(location, count, transpose, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUseProgram(GLuint program) {
+    BEFORE_GL_CALL;
+    mSymbols.fUseProgram(program);
+    AFTER_GL_CALL;
+  }
+
+  void fValidateProgram(GLuint program) {
+    BEFORE_GL_CALL;
+    mSymbols.fValidateProgram(program);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttribPointer(GLuint index, GLint size, GLenum type,
+                            realGLboolean normalized, GLsizei stride,
+                            const GLvoid* pointer) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttribPointer(index, size, type, normalized, stride,
+                                  pointer);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttrib1f(GLuint index, GLfloat x) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttrib1f(index, x);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttrib2f(GLuint index, GLfloat x, GLfloat y) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttrib2f(index, x, y);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttrib3f(GLuint index, GLfloat x, GLfloat y, GLfloat z) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttrib3f(index, x, y, z);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttrib4f(GLuint index, GLfloat x, GLfloat y, GLfloat z,
+                       GLfloat w) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttrib4f(index, x, y, z, w);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttrib1fv(GLuint index, const GLfloat* v) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttrib1fv(index, v);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttrib2fv(GLuint index, const GLfloat* v) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttrib2fv(index, v);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttrib3fv(GLuint index, const GLfloat* v) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttrib3fv(index, v);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttrib4fv(GLuint index, const GLfloat* v) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexAttrib4fv(index, v);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexPointer(GLint size, GLenum type, GLsizei stride,
+                      const GLvoid* pointer) {
+    BEFORE_GL_CALL;
+    mSymbols.fVertexPointer(size, type, stride, pointer);
+    AFTER_GL_CALL;
+  }
+
+  void fViewport(GLint x, GLint y, GLsizei width, GLsizei height) {
+    if (mViewportRect[0] == x && mViewportRect[1] == y &&
+        mViewportRect[2] == width && mViewportRect[3] == height) {
+      return;
+    }
+    mViewportRect[0] = x;
+    mViewportRect[1] = y;
+    mViewportRect[2] = width;
+    mViewportRect[3] = height;
+    BEFORE_GL_CALL;
+    mSymbols.fViewport(x, y, width, height);
+    AFTER_GL_CALL;
+  }
+
+  void fCompileShader(GLuint shader) {
+    BEFORE_GL_CALL;
+    mSymbols.fCompileShader(shader);
+    AFTER_GL_CALL;
+  }
+
+ private:
+  friend class SharedSurface_IOSurface;
+
+  void raw_fCopyTexImage2D(GLenum target, GLint level, GLenum internalformat,
+                           GLint x, GLint y, GLsizei width, GLsizei height,
+                           GLint border) {
+    BEFORE_GL_CALL;
+    mSymbols.fCopyTexImage2D(target, level, internalformat, x, y, width, height,
+                             border);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fCopyTexSubImage2D(GLenum target, GLint level, GLint xoffset,
+                              GLint yoffset, GLint x, GLint y, GLsizei width,
+                              GLsizei height) {
+    BEFORE_GL_CALL;
+    mSymbols.fCopyTexSubImage2D(target, level, xoffset, yoffset, x, y, width,
+                                height);
+    AFTER_GL_CALL;
+  }
+
+ public:
+  void fGetShaderiv(GLuint shader, GLenum pname, GLint* param) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetShaderiv(shader, pname, param);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetShaderInfoLog(GLuint shader, GLsizei bufSize, GLsizei* length,
+                         GLchar* infoLog) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetShaderInfoLog(shader, bufSize, length, infoLog);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+ private:
+  void raw_fGetShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype,
+                                     GLint* range, GLint* precision) {
+    MOZ_ASSERT(IsGLES());
+
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetShaderPrecisionFormat);
+    mSymbols.fGetShaderPrecisionFormat(shadertype, precisiontype, range,
+                                       precision);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+ public:
+  void fGetShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype,
+                                 GLint* range, GLint* precision) {
+    if (IsGLES()) {
+      raw_fGetShaderPrecisionFormat(shadertype, precisiontype, range,
+                                    precision);
+    } else {
+      // Fall back to automatic values because almost all desktop hardware
+      // supports the OpenGL standard precisions.
+      GetShaderPrecisionFormatNonES2(shadertype, precisiontype, range,
+                                     precision);
+    }
+  }
+
+  void fGetShaderSource(GLint obj, GLsizei maxLength, GLsizei* length,
+                        GLchar* source) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetShaderSource(obj, maxLength, length, source);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fShaderSource(GLuint shader, GLsizei count, const GLchar* const* strings,
+                     const GLint* lengths) {
+    BEFORE_GL_CALL;
+    mSymbols.fShaderSource(shader, count, strings, lengths);
+    AFTER_GL_CALL;
+  }
+
+ private:
+  mutable GLuint mCachedDrawFb = 0;
+  mutable GLuint mCachedReadFb = 0;
+
+ public:
+  bool mElideDuplicateBindFramebuffers = false;
+
+  void fBindFramebuffer(const GLenum target, const GLuint fb) const {
+    if (mElideDuplicateBindFramebuffers) {
+      MOZ_ASSERT(mCachedDrawFb ==
+                 GetIntAs<GLuint>(LOCAL_GL_DRAW_FRAMEBUFFER_BINDING));
+      MOZ_ASSERT(mCachedReadFb ==
+                 GetIntAs<GLuint>(LOCAL_GL_READ_FRAMEBUFFER_BINDING));
+
+      switch (target) {
+        case LOCAL_GL_FRAMEBUFFER:
+          if (mCachedDrawFb == fb && mCachedReadFb == fb) return;
+          break;
+        case LOCAL_GL_DRAW_FRAMEBUFFER:
+          if (mCachedDrawFb == fb) return;
+          break;
+        case LOCAL_GL_READ_FRAMEBUFFER:
+          if (mCachedReadFb == fb) return;
+          break;
+      }
+    }
+
+    BEFORE_GL_CALL;
+    mSymbols.fBindFramebuffer(target, fb);
+    AFTER_GL_CALL;
+
+    switch (target) {
+      case LOCAL_GL_FRAMEBUFFER:
+        mCachedDrawFb = fb;
+        mCachedReadFb = fb;
+        break;
+      case LOCAL_GL_DRAW_FRAMEBUFFER:
+        mCachedDrawFb = fb;
+        break;
+      case LOCAL_GL_READ_FRAMEBUFFER:
+        mCachedReadFb = fb;
+        break;
+    }
+  }
+
+  void fBindRenderbuffer(GLenum target, GLuint renderbuffer) {
+    BEFORE_GL_CALL;
+    mSymbols.fBindRenderbuffer(target, renderbuffer);
+    AFTER_GL_CALL;
+  }
+
+  GLenum fCheckFramebufferStatus(GLenum target) {
+    GLenum retval = 0;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fCheckFramebufferStatus(target);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  void fFramebufferRenderbuffer(GLenum target, GLenum attachmentPoint,
+                                GLenum renderbufferTarget,
+                                GLuint renderbuffer) {
+    BEFORE_GL_CALL;
+    mSymbols.fFramebufferRenderbuffer(target, attachmentPoint,
+                                      renderbufferTarget, renderbuffer);
+    AFTER_GL_CALL;
+  }
+
+  void fFramebufferTexture2D(GLenum target, GLenum attachmentPoint,
+                             GLenum textureTarget, GLuint texture,
+                             GLint level) {
+    BEFORE_GL_CALL;
+    mSymbols.fFramebufferTexture2D(target, attachmentPoint, textureTarget,
+                                   texture, level);
+    AFTER_GL_CALL;
+    if (mNeedsCheckAfterAttachTextureToFb) {
+      fCheckFramebufferStatus(target);
+    }
+  }
+
+  void fFramebufferTextureLayer(GLenum target, GLenum attachment,
+                                GLuint texture, GLint level, GLint layer) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fFramebufferTextureLayer);
+    mSymbols.fFramebufferTextureLayer(target, attachment, texture, level,
+                                      layer);
+    AFTER_GL_CALL;
+  }
+
+  void fGetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment,
+                                            GLenum pname, GLint* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetFramebufferAttachmentParameteriv(target, attachment, pname,
+                                                  value);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetRenderbufferParameteriv(GLenum target, GLenum pname, GLint* value) {
+    BEFORE_GL_CALL;
+    mSymbols.fGetRenderbufferParameteriv(target, pname, value);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fIsFramebuffer(GLuint framebuffer) {
+    realGLboolean retval = false;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fIsFramebuffer(framebuffer);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+ public:
+  realGLboolean fIsRenderbuffer(GLuint renderbuffer) {
+    realGLboolean retval = false;
+    BEFORE_GL_CALL;
+    retval = mSymbols.fIsRenderbuffer(renderbuffer);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  void fRenderbufferStorage(GLenum target, GLenum internalFormat, GLsizei width,
+                            GLsizei height) {
+    BEFORE_GL_CALL;
+    mSymbols.fRenderbufferStorage(target, internalFormat, width, height);
+    AFTER_GL_CALL;
+  }
+
+ private:
+  void raw_fDepthRange(GLclampf a, GLclampf b) {
+    MOZ_ASSERT(!IsGLES());
+
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDepthRange);
+    mSymbols.fDepthRange(a, b);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fDepthRangef(GLclampf a, GLclampf b) {
+    MOZ_ASSERT(IsGLES());
+
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDepthRangef);
+    mSymbols.fDepthRangef(a, b);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fClearDepth(GLclampf v) {
+    MOZ_ASSERT(!IsGLES());
+
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fClearDepth);
+    mSymbols.fClearDepth(v);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fClearDepthf(GLclampf v) {
+    MOZ_ASSERT(IsGLES());
+
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fClearDepthf);
+    mSymbols.fClearDepthf(v);
+    AFTER_GL_CALL;
+  }
+
+ public:
+  void fDepthRange(GLclampf a, GLclampf b) {
+    if (IsGLES()) {
+      raw_fDepthRangef(a, b);
+    } else {
+      raw_fDepthRange(a, b);
+    }
+  }
+
+  void fClearDepth(GLclampf v) {
+    if (IsGLES()) {
+      raw_fClearDepthf(v);
+    } else {
+      raw_fClearDepth(v);
+    }
+  }
+
+  void* fMapBuffer(GLenum target, GLenum access) {
+    void* ret = nullptr;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fMapBuffer);
+    ret = mSymbols.fMapBuffer(target, access);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  realGLboolean fUnmapBuffer(GLenum target) {
+    realGLboolean ret = false;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUnmapBuffer);
+    ret = mSymbols.fUnmapBuffer(target);
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+ private:
+  GLuint raw_fCreateProgram() {
+    GLuint ret = 0;
+    BEFORE_GL_CALL;
+    ret = mSymbols.fCreateProgram();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  GLuint raw_fCreateShader(GLenum t) {
+    GLuint ret = 0;
+    BEFORE_GL_CALL;
+    ret = mSymbols.fCreateShader(t);
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  void raw_fGenBuffers(GLsizei n, GLuint* names) {
+    BEFORE_GL_CALL;
+    mSymbols.fGenBuffers(n, names);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void raw_fGenFramebuffers(GLsizei n, GLuint* names) {
+    BEFORE_GL_CALL;
+    mSymbols.fGenFramebuffers(n, names);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void raw_fGenRenderbuffers(GLsizei n, GLuint* names) {
+    BEFORE_GL_CALL;
+    mSymbols.fGenRenderbuffers(n, names);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void raw_fGenTextures(GLsizei n, GLuint* names) {
+    BEFORE_GL_CALL;
+    mSymbols.fGenTextures(n, names);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+ public:
+  GLuint fCreateProgram() {
+    GLuint ret = raw_fCreateProgram();
+    TRACKING_CONTEXT(CreatedProgram(this, ret));
+    return ret;
+  }
+
+  GLuint fCreateShader(GLenum t) {
+    GLuint ret = raw_fCreateShader(t);
+    TRACKING_CONTEXT(CreatedShader(this, ret));
+    return ret;
+  }
+
+  void fGenBuffers(GLsizei n, GLuint* names) {
+    raw_fGenBuffers(n, names);
+    TRACKING_CONTEXT(CreatedBuffers(this, n, names));
+  }
+
+  void fGenFramebuffers(GLsizei n, GLuint* names) {
+    raw_fGenFramebuffers(n, names);
+    TRACKING_CONTEXT(CreatedFramebuffers(this, n, names));
+  }
+
+  void fGenRenderbuffers(GLsizei n, GLuint* names) {
+    raw_fGenRenderbuffers(n, names);
+    TRACKING_CONTEXT(CreatedRenderbuffers(this, n, names));
+  }
+
+  void fGenTextures(GLsizei n, GLuint* names) {
+    raw_fGenTextures(n, names);
+    TRACKING_CONTEXT(CreatedTextures(this, n, names));
+  }
+
+ private:
+  void raw_fDeleteProgram(GLuint program) {
+    BEFORE_GL_CALL;
+    mSymbols.fDeleteProgram(program);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fDeleteShader(GLuint shader) {
+    BEFORE_GL_CALL;
+    mSymbols.fDeleteShader(shader);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fDeleteBuffers(GLsizei n, const GLuint* names) {
+    BEFORE_GL_CALL;
+    mSymbols.fDeleteBuffers(n, names);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fDeleteFramebuffers(GLsizei n, const GLuint* names) {
+    BEFORE_GL_CALL;
+    mSymbols.fDeleteFramebuffers(n, names);
+    AFTER_GL_CALL;
+
+    for (const auto i : IntegerRange(n)) {
+      const auto fb = names[i];
+      if (mCachedDrawFb == fb) {
+        mCachedDrawFb = 0;
+      }
+      if (mCachedReadFb == fb) {
+        mCachedReadFb = 0;
+      }
+    }
+  }
+
+  void raw_fDeleteRenderbuffers(GLsizei n, const GLuint* names) {
+    BEFORE_GL_CALL;
+    mSymbols.fDeleteRenderbuffers(n, names);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fDeleteTextures(GLsizei n, const GLuint* names) {
+    BEFORE_GL_CALL;
+    mSymbols.fDeleteTextures(n, names);
+    AFTER_GL_CALL;
+  }
+
+ public:
+  void fDeleteProgram(GLuint program) {
+    raw_fDeleteProgram(program);
+    TRACKING_CONTEXT(DeletedProgram(this, program));
+  }
+
+  void fDeleteShader(GLuint shader) {
+    raw_fDeleteShader(shader);
+    TRACKING_CONTEXT(DeletedShader(this, shader));
+  }
+
+  void fDeleteBuffers(GLsizei n, const GLuint* names) {
+    raw_fDeleteBuffers(n, names);
+    TRACKING_CONTEXT(DeletedBuffers(this, n, names));
+  }
+
+  void fDeleteFramebuffers(GLsizei n, const GLuint* names);
+
+  void fDeleteRenderbuffers(GLsizei n, const GLuint* names) {
+    raw_fDeleteRenderbuffers(n, names);
+    TRACKING_CONTEXT(DeletedRenderbuffers(this, n, names));
+  }
+
+  void fDeleteTextures(GLsizei n, const GLuint* names) {
+#ifdef XP_MACOSX
+    // On the Mac the call to fDeleteTextures() triggers a flush. But it
+    // happens at the wrong time, which can lead to crashes. To work around
+    // this we call fFlush() explicitly ourselves, before the call to
+    // fDeleteTextures(). This fixes bug 1666293.
+    fFlush();
+#endif
+    raw_fDeleteTextures(n, names);
+    TRACKING_CONTEXT(DeletedTextures(this, n, names));
+  }
+
+  // -----------------------------------------------------------------------------
+  // Extension ARB_sync (GL)
+ public:
+  GLsync fFenceSync(GLenum condition, GLbitfield flags) {
+    GLsync ret = 0;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fFenceSync);
+    ret = mSymbols.fFenceSync(condition, flags);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  realGLboolean fIsSync(GLsync sync) {
+    realGLboolean ret = false;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fIsSync);
+    ret = mSymbols.fIsSync(sync);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  void fDeleteSync(GLsync sync) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDeleteSync);
+    mSymbols.fDeleteSync(sync);
+    AFTER_GL_CALL;
+  }
+
+  GLenum fClientWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout) {
+    GLenum ret = 0;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fClientWaitSync);
+    ret = mSymbols.fClientWaitSync(sync, flags, timeout);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  void fWaitSync(GLsync sync, GLbitfield flags, GLuint64 timeout) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fWaitSync);
+    mSymbols.fWaitSync(sync, flags, timeout);
+    AFTER_GL_CALL;
+  }
+
+  void fGetInteger64v(GLenum pname, GLint64* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetInteger64v);
+    mSymbols.fGetInteger64v(pname, params);
+    AFTER_GL_CALL;
+  }
+
+  void fGetSynciv(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei* length,
+                  GLint* values) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetSynciv);
+    mSymbols.fGetSynciv(sync, pname, bufSize, length, values);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Extension OES_EGL_image (GLES)
+ public:
+  void fEGLImageTargetTexture2D(GLenum target, GLeglImage image) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fEGLImageTargetTexture2D);
+    mSymbols.fEGLImageTargetTexture2D(target, image);
+    AFTER_GL_CALL;
+    mHeavyGLCallsSinceLastFlush = true;
+  }
+
+  void fEGLImageTargetRenderbufferStorage(GLenum target, GLeglImage image) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fEGLImageTargetRenderbufferStorage);
+    mSymbols.fEGLImageTargetRenderbufferStorage(target, image);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_bind_buffer_offset
+ public:
+  void fBindBufferOffset(GLenum target, GLuint index, GLuint buffer,
+                         GLintptr offset) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBindBufferOffset);
+    mSymbols.fBindBufferOffset(target, index, buffer, offset);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_draw_buffers
+ public:
+  void fDrawBuffers(GLsizei n, const GLenum* bufs) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDrawBuffers);
+    mSymbols.fDrawBuffers(n, bufs);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_draw_instanced
+ public:
+  void fDrawArraysInstanced(GLenum mode, GLint first, GLsizei count,
+                            GLsizei primcount) {
+    BeforeGLDrawCall();
+    raw_fDrawArraysInstanced(mode, first, count, primcount);
+    AfterGLDrawCall();
+  }
+
+  void fDrawElementsInstanced(GLenum mode, GLsizei count, GLenum type,
+                              const GLvoid* indices, GLsizei primcount) {
+    BeforeGLDrawCall();
+    raw_fDrawElementsInstanced(mode, count, type, indices, primcount);
+    AfterGLDrawCall();
+  }
+
+ private:
+  void raw_fDrawArraysInstanced(GLenum mode, GLint first, GLsizei count,
+                                GLsizei primcount) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDrawArraysInstanced);
+    mSymbols.fDrawArraysInstanced(mode, first, count, primcount);
+    AFTER_GL_CALL;
+  }
+
+  void raw_fDrawElementsInstanced(GLenum mode, GLsizei count, GLenum type,
+                                  const GLvoid* indices, GLsizei primcount) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDrawElementsInstanced);
+    mSymbols.fDrawElementsInstanced(mode, count, type, indices, primcount);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_framebuffer_blit
+ public:
+  // Draw/Read
+  void fBlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                        GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                        GLbitfield mask, GLenum filter) {
+    BeforeGLDrawCall();
+    BeforeGLReadCall();
+    raw_fBlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1,
+                         mask, filter);
+    AfterGLReadCall();
+    AfterGLDrawCall();
+  }
+
+ private:
+  void raw_fBlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                            GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                            GLbitfield mask, GLenum filter) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBlitFramebuffer);
+    mSymbols.fBlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1,
+                              dstY1, mask, filter);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_framebuffer_multisample
+ public:
+  void fRenderbufferStorageMultisample(GLenum target, GLsizei samples,
+                                       GLenum internalFormat, GLsizei width,
+                                       GLsizei height) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fRenderbufferStorageMultisample);
+    mSymbols.fRenderbufferStorageMultisample(target, samples, internalFormat,
+                                             width, height);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  //  GL 3.0, GL ES 3.0 & EXT_gpu_shader4
+ public:
+  void fGetVertexAttribIiv(GLuint index, GLenum pname, GLint* params) {
+    ASSERT_SYMBOL_PRESENT(fGetVertexAttribIiv);
+    BEFORE_GL_CALL;
+    mSymbols.fGetVertexAttribIiv(index, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetVertexAttribIuiv(GLuint index, GLenum pname, GLuint* params) {
+    ASSERT_SYMBOL_PRESENT(fGetVertexAttribIuiv);
+    BEFORE_GL_CALL;
+    mSymbols.fGetVertexAttribIuiv(index, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttribI4i(GLuint index, GLint x, GLint y, GLint z, GLint w) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fVertexAttribI4i);
+    mSymbols.fVertexAttribI4i(index, x, y, z, w);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttribI4iv(GLuint index, const GLint* v) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fVertexAttribI4iv);
+    mSymbols.fVertexAttribI4iv(index, v);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttribI4ui(GLuint index, GLuint x, GLuint y, GLuint z, GLuint w) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fVertexAttribI4ui);
+    mSymbols.fVertexAttribI4ui(index, x, y, z, w);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttribI4uiv(GLuint index, const GLuint* v) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fVertexAttribI4uiv);
+    mSymbols.fVertexAttribI4uiv(index, v);
+    AFTER_GL_CALL;
+  }
+
+  void fVertexAttribIPointer(GLuint index, GLint size, GLenum type,
+                             GLsizei stride, const GLvoid* offset) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fVertexAttribIPointer);
+    mSymbols.fVertexAttribIPointer(index, size, type, stride, offset);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform1ui(GLint location, GLuint v0) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniform1ui);
+    mSymbols.fUniform1ui(location, v0);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform2ui(GLint location, GLuint v0, GLuint v1) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniform2ui);
+    mSymbols.fUniform2ui(location, v0, v1);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform3ui(GLint location, GLuint v0, GLuint v1, GLuint v2) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniform3ui);
+    mSymbols.fUniform3ui(location, v0, v1, v2);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform4ui(GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniform4ui);
+    mSymbols.fUniform4ui(location, v0, v1, v2, v3);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform1uiv(GLint location, GLsizei count, const GLuint* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniform1uiv);
+    mSymbols.fUniform1uiv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform2uiv(GLint location, GLsizei count, const GLuint* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniform2uiv);
+    mSymbols.fUniform2uiv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform3uiv(GLint location, GLsizei count, const GLuint* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniform3uiv);
+    mSymbols.fUniform3uiv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  void fUniform4uiv(GLint location, GLsizei count, const GLuint* value) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fUniform4uiv);
+    mSymbols.fUniform4uiv(location, count, value);
+    AFTER_GL_CALL;
+  }
+
+  GLint fGetFragDataLocation(GLuint program, const GLchar* name) {
+    GLint result = 0;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetFragDataLocation);
+    result = mSymbols.fGetFragDataLocation(program, name);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return result;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_instanced_arrays
+ public:
+  void fVertexAttribDivisor(GLuint index, GLuint divisor) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fVertexAttribDivisor);
+    mSymbols.fVertexAttribDivisor(index, divisor);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Feature internalformat_query
+ public:
+  void fGetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
+                            GLsizei bufSize, GLint* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetInternalformativ);
+    mSymbols.fGetInternalformativ(target, internalformat, pname, bufSize,
+                                  params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_query_counter
+  /**
+   * XXX_query_counter:
+   *  - depends on XXX_query_objects
+   *  - provide all followed entry points
+   *  - provide GL_TIMESTAMP
+   */
+ public:
+  void fQueryCounter(GLuint id, GLenum target) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fQueryCounter);
+    mSymbols.fQueryCounter(id, target);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_query_objects
+  /**
+   * XXX_query_objects:
+   *  - provide all followed entry points
+   *
+   * XXX_occlusion_query2:
+   *  - depends on XXX_query_objects
+   *  - provide ANY_SAMPLES_PASSED
+   *
+   * XXX_occlusion_query_boolean:
+   *  - depends on XXX_occlusion_query2
+   *  - provide ANY_SAMPLES_PASSED_CONSERVATIVE
+   */
+ public:
+  void fDeleteQueries(GLsizei n, const GLuint* names) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDeleteQueries);
+    mSymbols.fDeleteQueries(n, names);
+    AFTER_GL_CALL;
+    TRACKING_CONTEXT(DeletedQueries(this, n, names));
+  }
+
+  void fGenQueries(GLsizei n, GLuint* names) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGenQueries);
+    mSymbols.fGenQueries(n, names);
+    AFTER_GL_CALL;
+    TRACKING_CONTEXT(CreatedQueries(this, n, names));
+  }
+
+  void fGetQueryiv(GLenum target, GLenum pname, GLint* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetQueryiv);
+    mSymbols.fGetQueryiv(target, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetQueryObjectuiv(GLuint id, GLenum pname, GLuint* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetQueryObjectuiv);
+    mSymbols.fGetQueryObjectuiv(id, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fIsQuery(GLuint query) {
+    realGLboolean retval = false;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fIsQuery);
+    retval = mSymbols.fIsQuery(query);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return retval;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_get_query_object_i64v
+  /**
+   * XXX_get_query_object_i64v:
+   *  - depends on XXX_query_objects
+   *  - provide the followed entry point
+   */
+ public:
+  void fGetQueryObjecti64v(GLuint id, GLenum pname, GLint64* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetQueryObjecti64v);
+    mSymbols.fGetQueryObjecti64v(id, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetQueryObjectui64v(GLuint id, GLenum pname, GLuint64* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetQueryObjectui64v);
+    mSymbols.fGetQueryObjectui64v(id, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_get_query_object_iv
+  /**
+   * XXX_get_query_object_iv:
+   *  - depends on XXX_query_objects
+   *  - provide the followed entry point
+   *
+   * XXX_occlusion_query:
+   *  - depends on XXX_get_query_object_iv
+   *  - provide LOCAL_GL_SAMPLES_PASSED
+   */
+ public:
+  void fGetQueryObjectiv(GLuint id, GLenum pname, GLint* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetQueryObjectiv);
+    mSymbols.fGetQueryObjectiv(id, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // GL 4.0, GL ES 3.0, ARB_transform_feedback2, NV_transform_feedback2
+ public:
+  void fBindBufferBase(GLenum target, GLuint index, GLuint buffer) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBindBufferBase);
+    mSymbols.fBindBufferBase(target, index, buffer);
+    AFTER_GL_CALL;
+  }
+
+  void fBindBufferRange(GLenum target, GLuint index, GLuint buffer,
+                        GLintptr offset, GLsizeiptr size) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBindBufferRange);
+    mSymbols.fBindBufferRange(target, index, buffer, offset, size);
+    AFTER_GL_CALL;
+  }
+
+  void fGenTransformFeedbacks(GLsizei n, GLuint* ids) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGenTransformFeedbacks);
+    mSymbols.fGenTransformFeedbacks(n, ids);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fDeleteTransformFeedbacks(GLsizei n, const GLuint* ids) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDeleteTransformFeedbacks);
+    mSymbols.fDeleteTransformFeedbacks(n, ids);
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fIsTransformFeedback(GLuint id) {
+    realGLboolean result = false;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fIsTransformFeedback);
+    result = mSymbols.fIsTransformFeedback(id);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return result;
+  }
+
+  void fBindTransformFeedback(GLenum target, GLuint id) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBindTransformFeedback);
+    mSymbols.fBindTransformFeedback(target, id);
+    AFTER_GL_CALL;
+  }
+
+  void fBeginTransformFeedback(GLenum primitiveMode) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBeginTransformFeedback);
+    mSymbols.fBeginTransformFeedback(primitiveMode);
+    AFTER_GL_CALL;
+  }
+
+  void fEndTransformFeedback() {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fEndTransformFeedback);
+    mSymbols.fEndTransformFeedback();
+    AFTER_GL_CALL;
+  }
+
+  void fTransformFeedbackVaryings(GLuint program, GLsizei count,
+                                  const GLchar* const* varyings,
+                                  GLenum bufferMode) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fTransformFeedbackVaryings);
+    mSymbols.fTransformFeedbackVaryings(program, count, varyings, bufferMode);
+    AFTER_GL_CALL;
+  }
+
+  void fGetTransformFeedbackVarying(GLuint program, GLuint index,
+                                    GLsizei bufSize, GLsizei* length,
+                                    GLsizei* size, GLenum* type, GLchar* name) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetTransformFeedbackVarying);
+    mSymbols.fGetTransformFeedbackVarying(program, index, bufSize, length, size,
+                                          type, name);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fPauseTransformFeedback() {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fPauseTransformFeedback);
+    mSymbols.fPauseTransformFeedback();
+    AFTER_GL_CALL;
+  }
+
+  void fResumeTransformFeedback() {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fResumeTransformFeedback);
+    mSymbols.fResumeTransformFeedback();
+    AFTER_GL_CALL;
+  }
+
+  void fGetIntegeri_v(GLenum param, GLuint index, GLint* values) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetIntegeri_v);
+    mSymbols.fGetIntegeri_v(param, index, values);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetInteger64i_v(GLenum target, GLuint index, GLint64* data) {
+    ASSERT_SYMBOL_PRESENT(fGetInteger64i_v);
+    BEFORE_GL_CALL;
+    mSymbols.fGetInteger64i_v(target, index, data);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Package XXX_vertex_array_object
+ public:
+  void fBindVertexArray(GLuint array) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBindVertexArray);
+    mSymbols.fBindVertexArray(array);
+    AFTER_GL_CALL;
+  }
+
+  void fDeleteVertexArrays(GLsizei n, const GLuint* arrays) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDeleteVertexArrays);
+    mSymbols.fDeleteVertexArrays(n, arrays);
+    AFTER_GL_CALL;
+  }
+
+  void fGenVertexArrays(GLsizei n, GLuint* arrays) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGenVertexArrays);
+    mSymbols.fGenVertexArrays(n, arrays);
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fIsVertexArray(GLuint array) {
+    realGLboolean ret = false;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fIsVertexArray);
+    ret = mSymbols.fIsVertexArray(array);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Extension NV_fence
+ public:
+  void fGenFences(GLsizei n, GLuint* fences) {
+    ASSERT_SYMBOL_PRESENT(fGenFences);
+    BEFORE_GL_CALL;
+    mSymbols.fGenFences(n, fences);
+    AFTER_GL_CALL;
+  }
+
+  void fDeleteFences(GLsizei n, const GLuint* fences) {
+    ASSERT_SYMBOL_PRESENT(fDeleteFences);
+    BEFORE_GL_CALL;
+    mSymbols.fDeleteFences(n, fences);
+    AFTER_GL_CALL;
+  }
+
+  void fSetFence(GLuint fence, GLenum condition) {
+    ASSERT_SYMBOL_PRESENT(fSetFence);
+    BEFORE_GL_CALL;
+    mSymbols.fSetFence(fence, condition);
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fTestFence(GLuint fence) {
+    realGLboolean ret = false;
+    ASSERT_SYMBOL_PRESENT(fTestFence);
+    BEFORE_GL_CALL;
+    ret = mSymbols.fTestFence(fence);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  void fFinishFence(GLuint fence) {
+    ASSERT_SYMBOL_PRESENT(fFinishFence);
+    BEFORE_GL_CALL;
+    mSymbols.fFinishFence(fence);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fIsFence(GLuint fence) {
+    realGLboolean ret = false;
+    ASSERT_SYMBOL_PRESENT(fIsFence);
+    BEFORE_GL_CALL;
+    ret = mSymbols.fIsFence(fence);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  void fGetFenceiv(GLuint fence, GLenum pname, GLint* params) {
+    ASSERT_SYMBOL_PRESENT(fGetFenceiv);
+    BEFORE_GL_CALL;
+    mSymbols.fGetFenceiv(fence, pname, params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Extension NV_texture_barrier
+ public:
+  void fTextureBarrier() {
+    ASSERT_SYMBOL_PRESENT(fTextureBarrier);
+    BEFORE_GL_CALL;
+    mSymbols.fTextureBarrier();
+    AFTER_GL_CALL;
+  }
+
+  // Core GL & Extension ARB_copy_buffer
+ public:
+  void fCopyBufferSubData(GLenum readtarget, GLenum writetarget,
+                          GLintptr readoffset, GLintptr writeoffset,
+                          GLsizeiptr size) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fCopyBufferSubData);
+    mSymbols.fCopyBufferSubData(readtarget, writetarget, readoffset,
+                                writeoffset, size);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Core GL & Extension ARB_map_buffer_range
+ public:
+  void* fMapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length,
+                        GLbitfield access) {
+    void* data = nullptr;
+    ASSERT_SYMBOL_PRESENT(fMapBufferRange);
+    BEFORE_GL_CALL;
+    data = mSymbols.fMapBufferRange(target, offset, length, access);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return data;
+  }
+
+  void fFlushMappedBufferRange(GLenum target, GLintptr offset,
+                               GLsizeiptr length) {
+    ASSERT_SYMBOL_PRESENT(fFlushMappedBufferRange);
+    BEFORE_GL_CALL;
+    mSymbols.fFlushMappedBufferRange(target, offset, length);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Core GL & Extension ARB_sampler_objects
+ public:
+  void fGenSamplers(GLsizei count, GLuint* samplers) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGenSamplers);
+    mSymbols.fGenSamplers(count, samplers);
+    AFTER_GL_CALL;
+  }
+
+  void fDeleteSamplers(GLsizei count, const GLuint* samplers) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fDeleteSamplers);
+    mSymbols.fDeleteSamplers(count, samplers);
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fIsSampler(GLuint sampler) {
+    realGLboolean result = false;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fIsSampler);
+    result = mSymbols.fIsSampler(sampler);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return result;
+  }
+
+  void fBindSampler(GLuint unit, GLuint sampler) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fBindSampler);
+    mSymbols.fBindSampler(unit, sampler);
+    AFTER_GL_CALL;
+  }
+
+  void fSamplerParameteri(GLuint sampler, GLenum pname, GLint param) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fSamplerParameteri);
+    mSymbols.fSamplerParameteri(sampler, pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fSamplerParameteriv(GLuint sampler, GLenum pname, const GLint* param) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fSamplerParameteriv);
+    mSymbols.fSamplerParameteriv(sampler, pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fSamplerParameterf(GLuint sampler, GLenum pname, GLfloat param) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fSamplerParameterf);
+    mSymbols.fSamplerParameterf(sampler, pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fSamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat* param) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fSamplerParameterfv);
+    mSymbols.fSamplerParameterfv(sampler, pname, param);
+    AFTER_GL_CALL;
+  }
+
+  void fGetSamplerParameteriv(GLuint sampler, GLenum pname, GLint* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetSamplerParameteriv);
+    mSymbols.fGetSamplerParameteriv(sampler, pname, params);
+    AFTER_GL_CALL;
+  }
+
+  void fGetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat* params) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetSamplerParameterfv);
+    mSymbols.fGetSamplerParameterfv(sampler, pname, params);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Core GL & Extension ARB_uniform_buffer_object
+ public:
+  void fGetUniformIndices(GLuint program, GLsizei uniformCount,
+                          const GLchar* const* uniformNames,
+                          GLuint* uniformIndices) {
+    ASSERT_SYMBOL_PRESENT(fGetUniformIndices);
+    BEFORE_GL_CALL;
+    mSymbols.fGetUniformIndices(program, uniformCount, uniformNames,
+                                uniformIndices);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetActiveUniformsiv(GLuint program, GLsizei uniformCount,
+                            const GLuint* uniformIndices, GLenum pname,
+                            GLint* params) {
+    ASSERT_SYMBOL_PRESENT(fGetActiveUniformsiv);
+    BEFORE_GL_CALL;
+    mSymbols.fGetActiveUniformsiv(program, uniformCount, uniformIndices, pname,
+                                  params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  GLuint fGetUniformBlockIndex(GLuint program, const GLchar* uniformBlockName) {
+    GLuint result = 0;
+    ASSERT_SYMBOL_PRESENT(fGetUniformBlockIndex);
+    BEFORE_GL_CALL;
+    result = mSymbols.fGetUniformBlockIndex(program, uniformBlockName);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return result;
+  }
+
+  void fGetActiveUniformBlockiv(GLuint program, GLuint uniformBlockIndex,
+                                GLenum pname, GLint* params) {
+    ASSERT_SYMBOL_PRESENT(fGetActiveUniformBlockiv);
+    BEFORE_GL_CALL;
+    mSymbols.fGetActiveUniformBlockiv(program, uniformBlockIndex, pname,
+                                      params);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fGetActiveUniformBlockName(GLuint program, GLuint uniformBlockIndex,
+                                  GLsizei bufSize, GLsizei* length,
+                                  GLchar* uniformBlockName) {
+    ASSERT_SYMBOL_PRESENT(fGetActiveUniformBlockName);
+    BEFORE_GL_CALL;
+    mSymbols.fGetActiveUniformBlockName(program, uniformBlockIndex, bufSize,
+                                        length, uniformBlockName);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fUniformBlockBinding(GLuint program, GLuint uniformBlockIndex,
+                            GLuint uniformBlockBinding) {
+    ASSERT_SYMBOL_PRESENT(fUniformBlockBinding);
+    BEFORE_GL_CALL;
+    mSymbols.fUniformBlockBinding(program, uniformBlockIndex,
+                                  uniformBlockBinding);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // Core GL 4.2, GL ES 3.0 & Extension ARB_texture_storage/EXT_texture_storage
+  void fTexStorage2D(GLenum target, GLsizei levels, GLenum internalformat,
+                     GLsizei width, GLsizei height) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fTexStorage2D);
+    mSymbols.fTexStorage2D(target, levels, internalformat, width, height);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fTexStorage3D(GLenum target, GLsizei levels, GLenum internalformat,
+                     GLsizei width, GLsizei height, GLsizei depth) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fTexStorage3D);
+    mSymbols.fTexStorage3D(target, levels, internalformat, width, height,
+                           depth);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // 3D Textures
+  void fTexImage3D(GLenum target, GLint level, GLint internalFormat,
+                   GLsizei width, GLsizei height, GLsizei depth, GLint border,
+                   GLenum format, GLenum type, const GLvoid* data) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fTexImage3D);
+    mSymbols.fTexImage3D(target, level, internalFormat, width, height, depth,
+                         border, format, type, data);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fTexSubImage3D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                      GLint zoffset, GLsizei width, GLsizei height,
+                      GLsizei depth, GLenum format, GLenum type,
+                      const GLvoid* pixels) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fTexSubImage3D);
+    mSymbols.fTexSubImage3D(target, level, xoffset, yoffset, zoffset, width,
+                            height, depth, format, type, pixels);
+    OnSyncCall();
+    AFTER_GL_CALL;
+  }
+
+  void fCopyTexSubImage3D(GLenum target, GLint level, GLint xoffset,
+                          GLint yoffset, GLint zoffset, GLint x, GLint y,
+                          GLsizei width, GLsizei height) {
+    BeforeGLReadCall();
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fCopyTexSubImage3D);
+    mSymbols.fCopyTexSubImage3D(target, level, xoffset, yoffset, zoffset, x, y,
+                                width, height);
+    AFTER_GL_CALL;
+    AfterGLReadCall();
+  }
+
+  void fCompressedTexImage3D(GLenum target, GLint level, GLenum internalformat,
+                             GLsizei width, GLsizei height, GLsizei depth,
+                             GLint border, GLsizei imageSize,
+                             const GLvoid* data) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fCompressedTexImage3D);
+    mSymbols.fCompressedTexImage3D(target, level, internalformat, width, height,
+                                   depth, border, imageSize, data);
+    AFTER_GL_CALL;
+  }
+
+  void fCompressedTexSubImage3D(GLenum target, GLint level, GLint xoffset,
+                                GLint yoffset, GLint zoffset, GLsizei width,
+                                GLsizei height, GLsizei depth, GLenum format,
+                                GLsizei imageSize, const GLvoid* data) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fCompressedTexSubImage3D);
+    mSymbols.fCompressedTexSubImage3D(target, level, xoffset, yoffset, zoffset,
+                                      width, height, depth, format, imageSize,
+                                      data);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // GL3+, ES3+
+
+  const GLubyte* fGetStringi(GLenum name, GLuint index) {
+    const GLubyte* ret = nullptr;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fGetStringi);
+    ret = mSymbols.fGetStringi(name, index);
+    OnSyncCall();
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  // -----------------------------------------------------------------------------
+  // APPLE_framebuffer_multisample
+
+  void fResolveMultisampleFramebufferAPPLE() {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fResolveMultisampleFramebufferAPPLE);
+    mSymbols.fResolveMultisampleFramebufferAPPLE();
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // APPLE_fence
+
+  void fFinishObjectAPPLE(GLenum object, GLint name) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fFinishObjectAPPLE);
+    mSymbols.fFinishObjectAPPLE(object, name);
+    AFTER_GL_CALL;
+  }
+
+  realGLboolean fTestObjectAPPLE(GLenum object, GLint name) {
+    realGLboolean ret = false;
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fTestObjectAPPLE);
+    ret = mSymbols.fTestObjectAPPLE(object, name);
+    AFTER_GL_CALL;
+    return ret;
+  }
+
+  // -----------------------------------------------------------------------------
+  // prim_restart
+
+  void fPrimitiveRestartIndex(GLuint index) {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fPrimitiveRestartIndex);
+    mSymbols.fPrimitiveRestartIndex(index);
+    AFTER_GL_CALL;
+  }
+
+  // -----------------------------------------------------------------------------
+  // multiview
+
+  void fFramebufferTextureMultiview(GLenum target, GLenum attachment,
+                                    GLuint texture, GLint level,
+                                    GLint baseViewIndex,
+                                    GLsizei numViews) const {
+    BEFORE_GL_CALL;
+    ASSERT_SYMBOL_PRESENT(fFramebufferTextureMultiview);
+    mSymbols.fFramebufferTextureMultiview(target, attachment, texture, level,
+                                          baseViewIndex, numViews);
+    AFTER_GL_CALL;
+  }
+
+  // -
+  // draw_buffers_indexed
+
+  void fBlendEquationSeparatei(GLuint i, GLenum modeRGB,
+                               GLenum modeAlpha) const {
+    BEFORE_GL_CALL;
+    mSymbols.fBlendEquationSeparatei(i, modeRGB, modeAlpha);
+    AFTER_GL_CALL;
+  }
+
+  void fBlendFuncSeparatei(GLuint i, GLenum sfactorRGB, GLenum dfactorRGB,
+                           GLenum sfactorAlpha, GLenum dfactorAlpha) const {
+    BEFORE_GL_CALL;
+    mSymbols.fBlendFuncSeparatei(i, sfactorRGB, dfactorRGB, sfactorAlpha,
+                                 dfactorAlpha);
+    AFTER_GL_CALL;
+  }
+
+  void fColorMaski(GLuint i, realGLboolean red, realGLboolean green,
+                   realGLboolean blue, realGLboolean alpha) const {
+    BEFORE_GL_CALL;
+    mSymbols.fColorMaski(i, red, green, blue, alpha);
+    AFTER_GL_CALL;
+  }
+
+  void fDisablei(GLenum capability, GLuint i) const {
+    BEFORE_GL_CALL;
+    mSymbols.fDisablei(capability, i);
+    AFTER_GL_CALL;
+  }
+
+  void fEnablei(GLenum capability, GLuint i) const {
+    BEFORE_GL_CALL;
+    mSymbols.fEnablei(capability, i);
+    AFTER_GL_CALL;
+  }
+
+  // -
+
+  void fProvokingVertex(GLenum mode) const {
+    BEFORE_GL_CALL;
+    mSymbols.fProvokingVertex(mode);
+    AFTER_GL_CALL;
+  }
+
+  // -
+
+#undef BEFORE_GL_CALL
+#undef AFTER_GL_CALL
+#undef ASSERT_SYMBOL_PRESENT
+// #undef TRACKING_CONTEXT // Needed in GLContext.cpp
+#undef ASSERT_NOT_PASSING_STACK_BUFFER_TO_GL
+
+  // -----------------------------------------------------------------------------
+  // Constructor
+ protected:
+  explicit GLContext(const GLContextDesc&, GLContext* sharedContext = nullptr,
+                     bool canUseTLSIsCurrent = false);
+
+  // -----------------------------------------------------------------------------
+  // Destructor
+ public:
+  virtual ~GLContext();
+
+  // Mark this context as destroyed.  This will nullptr out all
+  // the GL function pointers!
+  void MarkDestroyed();
+
+ protected:
+  virtual void OnMarkDestroyed() {}
+
+  // -----------------------------------------------------------------------------
+  // Everything that isn't standard GL APIs
+ protected:
+  typedef gfx::SurfaceFormat SurfaceFormat;
+
+ public:
+  virtual void ReleaseSurface() {}
+
+  bool IsDestroyed() const {
+    // MarkDestroyed will mark all these as null.
+    return mContextLost && mSymbols.fUseProgram == nullptr;
+  }
+
+  GLContext* GetSharedContext() { return mSharedContext; }
+
+  /**
+   * Returns true if the thread on which this context was created is the
+   * currently executing thread.
+   */
+  bool IsValidOwningThread() const;
+
+  static void PlatformStartup();
+
+ public:
+  /**
+   * If this context wraps a double-buffered target, swap the back
+   * and front buffers.  It should be assumed that after a swap, the
+   * contents of the new back buffer are undefined.
+   */
+  virtual bool SwapBuffers() { return false; }
+
+  /**
+   * Stores a damage region (in origin bottom left coordinates), which
+   * makes the next SwapBuffers call do eglSwapBuffersWithDamage if supported.
+   *
+   * Note that even if only part of the context is damaged, the entire buffer
+   * needs to be filled with up-to-date contents. This region is only a hint
+   * telling the system compositor which parts of the buffer were updated.
+   */
+  virtual void SetDamage(const nsIntRegion& aDamageRegion) {}
+
+  /**
+   * Get the buffer age. If it returns 0, that indicates the buffer state is
+   * unknown and the entire frame should be redrawn.
+   */
+  virtual GLint GetBufferAge() const { return 0; }
+
+  /**
+   * Defines a two-dimensional texture image for context target surface
+   */
+  virtual bool BindTexImage() { return false; }
+  /*
+   * Releases a color buffer that is being used as a texture
+   */
+  virtual bool ReleaseTexImage() { return false; }
+
+  virtual Maybe<SymbolLoader> GetSymbolLoader() const = 0;
+
+  void BindFB(GLuint fb) {
+    fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, fb);
+    MOZ_GL_ASSERT(this, !fb || fIsFramebuffer(fb));
+  }
+
+  void BindDrawFB(GLuint fb) {
+    fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER_EXT, fb);
+  }
+
+  void BindReadFB(GLuint fb) {
+    fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER_EXT, fb);
+  }
+
+  GLuint GetDrawFB() const {
+    return GetIntAs<GLuint>(LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT);
+  }
+
+  GLuint GetReadFB() const {
+    auto bindEnum = LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT;
+    if (!IsSupported(GLFeature::split_framebuffer)) {
+      bindEnum = LOCAL_GL_FRAMEBUFFER_BINDING;
+    }
+    return GetIntAs<GLuint>(bindEnum);
+  }
+
+  GLuint GetFB() const {
+    const auto ret = GetDrawFB();
+    MOZ_ASSERT(ret == GetReadFB());
+    return ret;
+  }
+
+ private:
+  void GetShaderPrecisionFormatNonES2(GLenum shadertype, GLenum precisiontype,
+                                      GLint* range, GLint* precision) {
+    switch (precisiontype) {
+      case LOCAL_GL_LOW_FLOAT:
+      case LOCAL_GL_MEDIUM_FLOAT:
+      case LOCAL_GL_HIGH_FLOAT:
+        // Assume IEEE 754 precision
+        range[0] = 127;
+        range[1] = 127;
+        *precision = 23;
+        break;
+      case LOCAL_GL_LOW_INT:
+      case LOCAL_GL_MEDIUM_INT:
+      case LOCAL_GL_HIGH_INT:
+        // Some (most) hardware only supports single-precision floating-point
+        // numbers, which can accurately represent integers up to +/-16777216
+        range[0] = 24;
+        range[1] = 24;
+        *precision = 0;
+        break;
+    }
+  }
+
+ public:
+  virtual GLenum GetPreferredARGB32Format() const { return LOCAL_GL_RGBA; }
+
+  virtual GLenum GetPreferredEGLImageTextureTarget() const {
+#ifdef MOZ_WAYLAND
+    return LOCAL_GL_TEXTURE_2D;
+#else
+    return IsExtensionSupported(OES_EGL_image_external)
+               ? LOCAL_GL_TEXTURE_EXTERNAL
+               : LOCAL_GL_TEXTURE_2D;
+#endif
+  }
+
+  virtual bool RenewSurface(widget::CompositorWidget* aWidget) { return false; }
+
+  // Shared code for GL extensions and GLX extensions.
+  static bool ListHasExtension(const GLubyte* extensions,
+                               const char* extension);
+
+ public:
+  enum {
+    DebugFlagEnabled = 1 << 0,
+    DebugFlagTrace = 1 << 1,
+    DebugFlagAbortOnError = 1 << 2
+  };
+
+  const uint8_t mDebugFlags;
+  static uint8_t ChooseDebugFlags(CreateContextFlags createFlags);
+
+ protected:
+  RefPtr<GLContext> mSharedContext;
+
+ public:
+  // The thread id which this context was created.
+  Maybe<PlatformThreadId> mOwningThreadId;
+
+ protected:
+  GLContextSymbols mSymbols = {};
+
+  UniquePtr<GLBlitHelper> mBlitHelper;
+  UniquePtr<GLReadTexImageHelper> mReadTexImageHelper;
+
+ public:
+  GLBlitHelper* BlitHelper();
+  GLReadTexImageHelper* ReadTexImageHelper();
+
+  // Assumes shares are created by all sharing with the same global context.
+  bool SharesWith(const GLContext* other) const {
+    MOZ_ASSERT(!this->mSharedContext || !this->mSharedContext->mSharedContext);
+    MOZ_ASSERT(!other->mSharedContext ||
+               !other->mSharedContext->mSharedContext);
+    MOZ_ASSERT(!this->mSharedContext || !other->mSharedContext ||
+               this->mSharedContext == other->mSharedContext);
+
+    const GLContext* thisShared =
+        this->mSharedContext ? this->mSharedContext : this;
+    const GLContext* otherShared =
+        other->mSharedContext ? other->mSharedContext : other;
+
+    return thisShared == otherShared;
+  }
+
+  bool IsFramebufferComplete(GLuint fb, GLenum* status = nullptr);
+
+  // Does not check completeness.
+  void AttachBuffersToFB(GLuint colorTex, GLuint colorRB, GLuint depthRB,
+                         GLuint stencilRB, GLuint fb,
+                         GLenum target = LOCAL_GL_TEXTURE_2D);
+
+  // Passing null is fine if the value you'd get is 0.
+  bool AssembleOffscreenFBs(const GLuint colorMSRB, const GLuint depthRB,
+                            const GLuint stencilRB, const GLuint texture,
+                            GLuint* drawFB, GLuint* readFB);
+
+ protected:
+  SharedSurface* mLockedSurface = nullptr;
+
+ public:
+  void LockSurface(SharedSurface* surf) { mLockedSurface = surf; }
+
+  void UnlockSurface(SharedSurface* surf) {
+    MOZ_ASSERT(mLockedSurface == surf);
+    mLockedSurface = nullptr;
+  }
+
+  SharedSurface* GetLockedSurface() const { return mLockedSurface; }
+
+  bool IsOffscreen() const { return mDesc.isOffscreen; }
+
+  bool WorkAroundDriverBugs() const { return mWorkAroundDriverBugs; }
+
+  bool IsOffscreenSizeAllowed(const gfx::IntSize& aSize) const;
+
+  virtual bool Init();
+
+ private:
+  bool InitImpl();
+  void LoadMoreSymbols(const SymbolLoader& loader);
+  bool LoadExtSymbols(const SymbolLoader& loader, const SymLoadStruct* list,
+                      GLExtensions ext);
+  bool LoadFeatureSymbols(const SymbolLoader& loader, const SymLoadStruct* list,
+                          GLFeature feature);
+
+ protected:
+  void InitExtensions();
+
+  GLint mViewportRect[4] = {};
+  GLint mScissorRect[4] = {};
+
+  uint32_t mMaxTexOrRbSize = 0;
+  GLint mMaxTextureSize = 0;
+  GLint mMaxCubeMapTextureSize = 0;
+  GLint mMaxRenderbufferSize = 0;
+  GLint mMaxViewportDims[2] = {};
+  GLsizei mMaxSamples = 0;
+  bool mNeedsTextureSizeChecks = false;
+  bool mNeedsFlushBeforeDeleteFB = false;
+  bool mTextureAllocCrashesOnMapFailure = false;
+  bool mNeedsCheckAfterAttachTextureToFb = false;
+  const bool mWorkAroundDriverBugs;
+  mutable uint64_t mSyncGLCallCount = 0;
+
+  bool IsTextureSizeSafeToPassToDriver(GLenum target, GLsizei width,
+                                       GLsizei height) const {
+    if (mNeedsTextureSizeChecks) {
+      // some drivers incorrectly handle some large texture sizes that are below
+      // the max texture size that they report. So we check ourselves against
+      // our own values (mMax[CubeMap]TextureSize). see bug 737182 for Mac Intel
+      // 2D textures see bug 684882 for Mac Intel cube map textures see bug
+      // 814716 for Mesa Nouveau
+      GLsizei maxSize =
+          target == LOCAL_GL_TEXTURE_CUBE_MAP ||
+                  (target >= LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X &&
+                   target <= LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
+              ? mMaxCubeMapTextureSize
+              : mMaxTextureSize;
+      return width <= maxSize && height <= maxSize;
+    }
+    return true;
+  }
+
+ public:
+  auto MaxSamples() const { return uint32_t(mMaxSamples); }
+  auto MaxTextureSize() const { return uint32_t(mMaxTextureSize); }
+  auto MaxRenderbufferSize() const { return uint32_t(mMaxRenderbufferSize); }
+  auto MaxTexOrRbSize() const { return mMaxTexOrRbSize; }
+
+#ifdef MOZ_GL_DEBUG_BUILD
+  void CreatedProgram(GLContext* aOrigin, GLuint aName);
+  void CreatedShader(GLContext* aOrigin, GLuint aName);
+  void CreatedBuffers(GLContext* aOrigin, GLsizei aCount, GLuint* aNames);
+  void CreatedQueries(GLContext* aOrigin, GLsizei aCount, GLuint* aNames);
+  void CreatedTextures(GLContext* aOrigin, GLsizei aCount, GLuint* aNames);
+  void CreatedFramebuffers(GLContext* aOrigin, GLsizei aCount, GLuint* aNames);
+  void CreatedRenderbuffers(GLContext* aOrigin, GLsizei aCount, GLuint* aNames);
+  void DeletedProgram(GLContext* aOrigin, GLuint aName);
+  void DeletedShader(GLContext* aOrigin, GLuint aName);
+  void DeletedBuffers(GLContext* aOrigin, GLsizei aCount, const GLuint* aNames);
+  void DeletedQueries(GLContext* aOrigin, GLsizei aCount, const GLuint* aNames);
+  void DeletedTextures(GLContext* aOrigin, GLsizei aCount,
+                       const GLuint* aNames);
+  void DeletedFramebuffers(GLContext* aOrigin, GLsizei aCount,
+                           const GLuint* aNames);
+  void DeletedRenderbuffers(GLContext* aOrigin, GLsizei aCount,
+                            const GLuint* aNames);
+
+  void SharedContextDestroyed(GLContext* aChild);
+  void ReportOutstandingNames();
+
+  struct NamedResource {
+    NamedResource() : origin(nullptr), name(0), originDeleted(false) {}
+
+    NamedResource(GLContext* aOrigin, GLuint aName)
+        : origin(aOrigin), name(aName), originDeleted(false) {}
+
+    GLContext* origin;
+    GLuint name;
+    bool originDeleted;
+
+    // for sorting
+    bool operator<(const NamedResource& aOther) const {
+      if (intptr_t(origin) < intptr_t(aOther.origin)) return true;
+      if (name < aOther.name) return true;
+      return false;
+    }
+    bool operator==(const NamedResource& aOther) const {
+      return origin == aOther.origin && name == aOther.name &&
+             originDeleted == aOther.originDeleted;
+    }
+  };
+
+  nsTArray<NamedResource> mTrackedPrograms;
+  nsTArray<NamedResource> mTrackedShaders;
+  nsTArray<NamedResource> mTrackedTextures;
+  nsTArray<NamedResource> mTrackedFramebuffers;
+  nsTArray<NamedResource> mTrackedRenderbuffers;
+  nsTArray<NamedResource> mTrackedBuffers;
+  nsTArray<NamedResource> mTrackedQueries;
+#endif
+
+ protected:
+  bool mHeavyGLCallsSinceLastFlush = false;
+
+ public:
+  void FlushIfHeavyGLCallsSinceLastFlush();
+  static bool ShouldSpew();
+  static bool ShouldDumpExts();
+
+  // --
+
+  void TexParams_SetClampNoMips(GLenum target = LOCAL_GL_TEXTURE_2D) {
+    fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
+    fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
+    fTexParameteri(target, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_NEAREST);
+    fTexParameteri(target, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_NEAREST);
+  }
+
+  // --
+
+  GLuint CreateFramebuffer() {
+    GLuint x = 0;
+    fGenFramebuffers(1, &x);
+    return x;
+  }
+  GLuint CreateRenderbuffer() {
+    GLuint x = 0;
+    fGenRenderbuffers(1, &x);
+    return x;
+  }
+  GLuint CreateTexture() {
+    GLuint x = 0;
+    fGenTextures(1, &x);
+    return x;
+  }
+
+  void DeleteFramebuffer(const GLuint x) { fDeleteFramebuffers(1, &x); }
+  void DeleteRenderbuffer(const GLuint x) { fDeleteRenderbuffers(1, &x); }
+  void DeleteTexture(const GLuint x) { fDeleteTextures(1, &x); }
+};
+
+bool DoesStringMatch(const char* aString, const char* aWantedString);
+
+void SplitByChar(const nsACString& str, const char delim,
+                 std::vector<nsCString>* const out);
+
+template <size_t N>
+bool MarkBitfieldByString(const nsACString& str,
+                          const char* const (&markStrList)[N],
+                          std::bitset<N>* const out_markList) {
+  for (size_t i = 0; i < N; i++) {
+    if (str.Equals(markStrList[i])) {
+      (*out_markList)[i] = 1;
+      return true;
+    }
+  }
+  return false;
+}
+
+template <size_t N>
+void MarkBitfieldByStrings(const std::vector<nsCString>& strList,
+                           bool dumpStrings,
+                           const char* const (&markStrList)[N],
+                           std::bitset<N>* const out_markList) {
+  for (auto itr = strList.begin(); itr != strList.end(); ++itr) {
+    const nsACString& str = *itr;
+    const bool wasMarked = MarkBitfieldByString(str, markStrList, out_markList);
+    if (dumpStrings)
+      printf_stderr("  %s%s\n", str.BeginReading(), wasMarked ? "(*)" : "");
+  }
+}
+
+// -
+
+class Renderbuffer final {
+ public:
+  const WeakPtr<GLContext> weakGl;
+  const GLuint name;
+
+ private:
+  static GLuint Create(GLContext& gl) {
+    GLuint ret = 0;
+    gl.fGenRenderbuffers(1, &ret);
+    return ret;
+  }
+
+ public:
+  explicit Renderbuffer(GLContext& gl) : weakGl(&gl), name(Create(gl)) {}
+
+  ~Renderbuffer() {
+    const RefPtr<GLContext> gl = weakGl.get();
+    if (!gl || !gl->MakeCurrent()) return;
+    gl->fDeleteRenderbuffers(1, &name);
+  }
+};
+
+// -
+
+class Texture final {
+ public:
+  const WeakPtr<GLContext> weakGl;
+  const GLuint name;
+
+ private:
+  static GLuint Create(GLContext& gl) {
+    GLuint ret = 0;
+    gl.fGenTextures(1, &ret);
+    return ret;
+  }
+
+ public:
+  explicit Texture(GLContext& gl) : weakGl(&gl), name(Create(gl)) {}
+
+  ~Texture() {
+    const RefPtr<GLContext> gl = weakGl.get();
+    if (!gl || !gl->MakeCurrent()) return;
+    gl->fDeleteTextures(1, &name);
+  }
+};
+
+/**
+ * Helper function that creates a 2D texture aSize.width x aSize.height with
+ * storage type specified by aFormats. Returns GL texture object id.
+ *
+ * See mozilla::gl::CreateTexture.
+ */
+UniquePtr<Texture> CreateTexture(GLContext&, const gfx::IntSize& size);
+
+/**
+ * Helper function that calculates the number of bytes required per
+ * texel for a texture from its format and type.
+ */
+uint32_t GetBytesPerTexel(GLenum format, GLenum type);
+
+void MesaMemoryLeakWorkaround();
+
+} /* namespace gl */
+} /* namespace mozilla */
+
+#endif /* GLCONTEXT_H_ */
diff --git a/gfx/gl/GLContextCGL.h b/gfx/gl/GLContextCGL.h
new file mode 100644
index 0000000000..b065df4554
--- /dev/null
+++ b/gfx/gl/GLContextCGL.h
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXTCGL_H_
+#define GLCONTEXTCGL_H_
+
+#include "GLContext.h"
+
+#include "OpenGL/OpenGL.h"
+
+#ifdef __OBJC__
+#  include <AppKit/NSOpenGL.h>
+#else
+typedef void NSOpenGLContext;
+#endif
+
+#include <CoreGraphics/CGDisplayConfiguration.h>
+
+#include "mozilla/Atomics.h"
+
+class nsIWidget;
+
+namespace mozilla {
+namespace gl {
+
+class GLContextCGL : public GLContext {
+  friend class GLContextProviderCGL;
+
+  NSOpenGLContext* mContext;
+
+  mozilla::Atomic<bool> mActiveGPUSwitchMayHaveOccurred;
+
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GLContextCGL, override)
+  GLContextCGL(const GLContextDesc&, NSOpenGLContext* context);
+
+  ~GLContextCGL();
+
+  virtual GLContextType GetContextType() const override {
+    return GLContextType::CGL;
+  }
+
+  static GLContextCGL* Cast(GLContext* gl) {
+    MOZ_ASSERT(gl->GetContextType() == GLContextType::CGL);
+    return static_cast<GLContextCGL*>(gl);
+  }
+
+  NSOpenGLContext* GetNSOpenGLContext() const { return mContext; }
+  CGLContextObj GetCGLContext() const;
+
+  // Can be called on any thread
+  static void DisplayReconfigurationCallback(CGDirectDisplayID aDisplay,
+                                             CGDisplayChangeSummaryFlags aFlags,
+                                             void* aUserInfo);
+
+  // Call at the beginning of a frame, on contexts that should stay on the
+  // active GPU. This method will migrate the context to the new active GPU, if
+  // the active GPU has changed since the last call.
+  void MigrateToActiveGPU();
+
+  virtual bool MakeCurrentImpl() const override;
+
+  virtual bool IsCurrentImpl() const override;
+
+  virtual GLenum GetPreferredARGB32Format() const override;
+
+  virtual bool SwapBuffers() override;
+
+  virtual void GetWSIInfo(nsCString* const out) const override;
+
+  Maybe<SymbolLoader> GetSymbolLoader() const override;
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GLCONTEXTCGL_H_
diff --git a/gfx/gl/GLContextEAGL.h b/gfx/gl/GLContextEAGL.h
new file mode 100644
index 0000000000..851a9170f7
--- /dev/null
+++ b/gfx/gl/GLContextEAGL.h
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXTEAGL_H_
+#define GLCONTEXTEAGL_H_
+
+#include "GLContext.h"
+
+#include <CoreGraphics/CoreGraphics.h>
+#include <OpenGLES/EAGL.h>
+
+namespace mozilla {
+namespace gl {
+
+class GLContextEAGL : public GLContext {
+  friend class GLContextProviderEAGL;
+
+  EAGLContext* const mContext;
+
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GLContextEAGL, override)
+  GLContextEAGL(const GLContextDesc&, EAGLContext* context,
+                GLContext* sharedContext, ContextProfile profile);
+
+  ~GLContextEAGL();
+
+  virtual GLContextType GetContextType() const override {
+    return GLContextType::EAGL;
+  }
+
+  static GLContextEAGL* Cast(GLContext* gl) {
+    MOZ_ASSERT(gl->GetContextType() == GLContextType::EAGL);
+    return static_cast<GLContextEAGL*>(gl);
+  }
+
+  bool AttachToWindow(nsIWidget* aWidget);
+
+  EAGLContext* GetEAGLContext() const { return mContext; }
+
+  virtual bool MakeCurrentImpl() const override;
+
+  virtual bool IsCurrentImpl() const override;
+
+  Maybe<SymbolLoader> GetSymbolLoader() const override;
+
+  virtual bool IsDoubleBuffered() const override;
+
+  virtual bool SwapBuffers() override;
+
+  virtual void GetWSIInfo(nsCString* const out) const override;
+
+  virtual GLuint GetDefaultFramebuffer() override { return mBackbufferFB; }
+
+  virtual bool RenewSurface(nsIWidget* aWidget) override {
+    // FIXME: should use the passed widget instead of the existing one.
+    return RecreateRB();
+  }
+
+ private:
+  GLuint mBackbufferRB = 0;
+  GLuint mBackbufferFB = 0;
+
+  void* mLayer = nullptr;
+
+  bool RecreateRB();
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GLCONTEXTEAGL_H_
diff --git a/gfx/gl/GLContextEGL.h b/gfx/gl/GLContextEGL.h
new file mode 100644
index 0000000000..93ff12808a
--- /dev/null
+++ b/gfx/gl/GLContextEGL.h
@@ -0,0 +1,164 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXTEGL_H_
+#define GLCONTEXTEGL_H_
+
+#include "GLContext.h"
+#include "GLLibraryEGL.h"
+#include "nsRegion.h"
+#include <memory>
+
+namespace mozilla {
+namespace layers {
+class SurfaceTextureImage;
+}  // namespace layers
+namespace widget {
+class CompositorWidget;
+}  // namespace widget
+namespace gl {
+
+inline std::shared_ptr<EglDisplay> DefaultEglDisplay(
+    nsACString* const out_failureId) {
+  const auto lib = GLLibraryEGL::Get(out_failureId);
+  if (!lib) {
+    return nullptr;
+  }
+  return lib->DefaultDisplay(out_failureId);
+}
+
+// -
+
+class GLContextEGL final : public GLContext {
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GLContextEGL, override)
+
+  static RefPtr<GLContextEGL> CreateGLContext(
+      std::shared_ptr<EglDisplay>, const GLContextDesc&,
+      EGLConfig surfaceConfig, EGLSurface surface, const bool useGles,
+      EGLConfig contextConfig, nsACString* const out_failureId);
+
+ private:
+  GLContextEGL(std::shared_ptr<EglDisplay>, const GLContextDesc&,
+               EGLConfig surfaceConfig, EGLSurface surface, EGLContext context);
+  ~GLContextEGL();
+
+ public:
+  virtual GLContextType GetContextType() const override {
+    return GLContextType::EGL;
+  }
+
+  static GLContextEGL* Cast(GLContext* gl) {
+    MOZ_ASSERT(gl->GetContextType() == GLContextType::EGL);
+    return static_cast<GLContextEGL*>(gl);
+  }
+
+  bool Init() override;
+
+  virtual bool IsDoubleBuffered() const override { return mIsDoubleBuffered; }
+
+  void SetIsDoubleBuffered(bool aIsDB) { mIsDoubleBuffered = aIsDB; }
+
+  virtual bool IsANGLE() const override { return mEgl->mLib->IsANGLE(); }
+  virtual bool IsWARP() const override { return mEgl->mIsWARP; }
+
+  virtual bool BindTexImage() override;
+
+  virtual bool ReleaseTexImage() override;
+
+  void SetEGLSurfaceOverride(EGLSurface surf);
+  EGLSurface GetEGLSurfaceOverride() { return mSurfaceOverride; }
+
+  virtual bool MakeCurrentImpl() const override;
+
+  virtual bool IsCurrentImpl() const override;
+
+  virtual bool RenewSurface(widget::CompositorWidget* aWidget) override;
+
+  virtual void ReleaseSurface() override;
+
+  Maybe<SymbolLoader> GetSymbolLoader() const override;
+
+  virtual bool SwapBuffers() override;
+
+  virtual void SetDamage(const nsIntRegion& aDamageRegion) override;
+
+  GLint GetBufferAge() const override;
+
+  virtual void GetWSIInfo(nsCString* const out) const override;
+
+  EGLSurface GetEGLSurface() const { return mSurface; }
+
+  bool HasExtBufferAge() const;
+  bool HasKhrPartialUpdate() const;
+
+  bool BindTex2DOffscreen(GLContext* aOffscreen);
+  void UnbindTex2DOffscreen(GLContext* aOffscreen);
+  void BindOffscreenFramebuffer();
+
+  void Destroy();
+
+  static RefPtr<GLContextEGL> CreateWithoutSurface(
+      std::shared_ptr<EglDisplay>, const GLContextCreateDesc&,
+      nsACString* const out_FailureId);
+  static RefPtr<GLContextEGL> CreateEGLSurfacelessContext(
+      const std::shared_ptr<EglDisplay> display,
+      const GLContextCreateDesc& desc, nsACString* const out_failureId);
+
+  static EGLSurface CreateEGLSurfaceForCompositorWidget(
+      widget::CompositorWidget* aCompositorWidget, const EGLConfig aConfig);
+
+#ifdef MOZ_X11
+  static bool FindVisual(int* const out_visualId);
+#endif
+
+ protected:
+  friend class GLContextProviderEGL;
+  friend class GLContextEGLFactory;
+
+  virtual void OnMarkDestroyed() override;
+
+ public:
+  const std::shared_ptr<EglDisplay> mEgl;
+  const EGLConfig mSurfaceConfig;
+  const EGLContext mContext;
+
+ protected:
+  EGLSurface mSurface;
+  const EGLSurface mFallbackSurface;
+
+  EGLSurface mSurfaceOverride = EGL_NO_SURFACE;
+  bool mBound = false;
+
+  bool mIsPBuffer = false;
+  bool mIsDoubleBuffered = false;
+  bool mCanBindToTexture = false;
+  bool mShareWithEGLImage = false;
+  bool mOwnsContext = true;
+
+  nsIntRegion mDamageRegion;
+
+  static EGLSurface CreatePBufferSurfaceTryingPowerOfTwo(
+      EglDisplay&, EGLConfig, EGLenum bindToTextureFormat,
+      gfx::IntSize& pbsize);
+
+#ifdef MOZ_WAYLAND
+  static EGLSurface CreateWaylandBufferSurface(EglDisplay&, EGLConfig,
+                                               gfx::IntSize& pbsize);
+#endif
+
+ public:
+  EGLSurface CreateCompatibleSurface(void* aWindow) const;
+};
+
+bool CreateConfig(EglDisplay&, EGLConfig* aConfig, int32_t aDepth,
+                  bool aEnableDepthBuffer, bool aUseGles,
+                  bool aAllowFallback = true);
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GLCONTEXTEGL_H_
diff --git a/gfx/gl/GLContextFeatures.cpp b/gfx/gl/GLContextFeatures.cpp
new file mode 100644
index 0000000000..b66e6b6bbf
--- /dev/null
+++ b/gfx/gl/GLContextFeatures.cpp
@@ -0,0 +1,642 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLContext.h"
+#include "nsPrintfCString.h"
+
+namespace mozilla {
+namespace gl {
+
+const size_t kMAX_EXTENSION_GROUP_SIZE = 5;
+
+enum class GLVersion : uint32_t {
+  NONE = 0,  // Feature is not supported natively by GL
+  GL1_2 = 120,
+  GL1_3 = 130,
+  GL2 = 200,
+  GL2_1 = 210,
+  GL3 = 300,
+  GL3_1 = 310,
+  GL3_2 = 320,
+  GL3_3 = 330,
+  GL4 = 400,
+  GL4_1 = 410,
+  GL4_2 = 420,
+  GL4_3 = 430,
+};
+
+enum class GLESVersion : uint32_t {
+  NONE = 0,  // Feature is not support natively by GL ES
+  ES2 = 200,
+  ES3 = 300,
+  ES3_1 = 310,
+  ES3_2 = 320,
+};
+
+// ARB_ES2_compatibility is natively supported in OpenGL 4.1.
+static const GLVersion kGLCoreVersionForES2Compat = GLVersion::GL4_1;
+
+// ARB_ES3_compatibility is natively supported in OpenGL 4.3.
+static const GLVersion kGLCoreVersionForES3Compat = GLVersion::GL4_3;
+
+struct FeatureInfo {
+  const char* mName;
+
+  /* The (desktop) OpenGL version that provides this feature */
+  GLVersion mOpenGLVersion;
+
+  /* The OpenGL ES version that provides this feature */
+  GLESVersion mOpenGLESVersion;
+
+  /* If there is an ARB extension, and its function symbols are
+   * not decorated with an ARB suffix, then its extension ID should go
+   * here, and NOT in mExtensions.  For example, ARB_vertex_array_object
+   * functions do not have an ARB suffix, because it is an extension that
+   * was created to match core GL functionality and will never differ.
+   * Some ARB extensions do have a suffix, if they were created before
+   * a core version of the functionality existed.
+   *
+   * If there is no such ARB extension, pass 0 (GLContext::Extension_None)
+   */
+  GLContext::GLExtensions mARBExtensionWithoutARBSuffix;
+
+  /* Extensions that also provide this feature */
+  GLContext::GLExtensions mExtensions[kMAX_EXTENSION_GROUP_SIZE];
+};
+
+static const FeatureInfo sFeatureInfoArr[] = {
+    {"bind_buffer_offset",
+     GLVersion::NONE,
+     GLESVersion::NONE,
+     GLContext::Extension_None,
+     {
+
+         GLContext::EXT_transform_feedback, GLContext::NV_transform_feedback2,
+         GLContext::Extensions_End}},
+    {"blend_minmax",
+     GLVersion::GL2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::EXT_blend_minmax, GLContext::Extensions_End}},
+    {"clear_buffers",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::Extensions_End}},
+    {"copy_buffer",
+     GLVersion::GL3_1,
+     GLESVersion::ES3,
+     GLContext::ARB_copy_buffer,
+     {GLContext::Extensions_End}},
+    {"depth_texture",
+     GLVersion::GL2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_depth_texture, GLContext::OES_depth_texture,
+      // Intentionally avoid putting ANGLE_depth_texture here,
+      // it does not offer quite the same functionality.
+      GLContext::Extensions_End}},
+    {"draw_buffers",
+     GLVersion::GL2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_draw_buffers, GLContext::EXT_draw_buffers,
+      GLContext::Extensions_End}},
+    {"draw_buffers_indexed",
+     GLVersion::GL3,
+     GLESVersion::ES3_2,
+     GLContext::Extension_None,
+     {GLContext::OES_draw_buffers_indexed, GLContext::Extensions_End}},
+    {"draw_instanced",
+     GLVersion::GL3_1,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_draw_instanced, GLContext::EXT_draw_instanced,
+      GLContext::NV_draw_instanced, GLContext::ANGLE_instanced_arrays,
+      GLContext::Extensions_End}},
+    {"element_index_uint",
+     GLVersion::GL2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::OES_element_index_uint, GLContext::Extensions_End}},
+    {"ES2_compatibility",
+     kGLCoreVersionForES2Compat,
+     GLESVersion::ES2,                  // OpenGL ES version
+     GLContext::ARB_ES2_compatibility,  // no suffix on ARB extension
+     {GLContext::Extensions_End}},
+    {"ES3_compatibility",
+     kGLCoreVersionForES3Compat,
+     GLESVersion::ES3,                  // OpenGL ES version
+     GLContext::ARB_ES3_compatibility,  // no suffix on ARB extension
+     {GLContext::Extensions_End}},
+    {"EXT_color_buffer_float",
+     GLVersion::GL3,
+     GLESVersion::ES3_2,
+     GLContext::Extension_None,
+     {GLContext::EXT_color_buffer_float, GLContext::Extensions_End}},
+    {// Removes clamping for float color outputs from frag shaders.
+     "frag_color_float",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_color_buffer_float, GLContext::EXT_color_buffer_float,
+      GLContext::EXT_color_buffer_half_float,
+      GLContext::CHROMIUM_color_buffer_float_rgba, GLContext::Extensions_End}},
+    {"frag_depth",
+     GLVersion::GL2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::EXT_frag_depth, GLContext::Extensions_End}},
+    {// Check for just the blit framebuffer blit part of
+     // ARB_framebuffer_object
+     "framebuffer_blit",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::ARB_framebuffer_object,
+     {GLContext::ANGLE_framebuffer_blit, GLContext::EXT_framebuffer_blit,
+      GLContext::NV_framebuffer_blit, GLContext::Extensions_End}},
+    {// Check for just the multisample renderbuffer part of
+     // ARB_framebuffer_object
+     "framebuffer_multisample",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::ARB_framebuffer_object,
+     {GLContext::ANGLE_framebuffer_multisample,
+      GLContext::APPLE_framebuffer_multisample,
+      GLContext::EXT_framebuffer_multisample,
+      GLContext::EXT_multisampled_render_to_texture,
+      GLContext::Extensions_End}},
+    {// ARB_framebuffer_object support
+     "framebuffer_object",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::ARB_framebuffer_object,
+     {GLContext::Extensions_End}},
+    {// EXT_framebuffer_object/OES_framebuffer_object support
+     "framebuffer_object_EXT_OES",
+     GLVersion::GL3,
+     GLESVersion::ES2,
+     GLContext::Extension_None,
+     {GLContext::EXT_framebuffer_object, GLContext::OES_framebuffer_object,
+      GLContext::Extensions_End}},
+    {"get_integer_indexed",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::EXT_draw_buffers2, GLContext::Extensions_End}},
+    {"get_integer64_indexed",
+     GLVersion::GL3_2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::Extensions_End}},
+    {"get_query_object_i64v",
+     GLVersion::GL3_3,
+     GLESVersion::NONE,
+     GLContext::ARB_timer_query,
+     {GLContext::ANGLE_timer_query, GLContext::EXT_disjoint_timer_query,
+      GLContext::EXT_timer_query, GLContext::Extensions_End}},
+    {
+        "get_query_object_iv",
+        GLVersion::GL2,
+        GLESVersion::NONE,
+        GLContext::Extension_None,
+        {GLContext::Extensions_End}
+        /*
+         * XXX_get_query_object_iv only provide GetQueryObjectiv provided by
+         * ARB_occlusion_query (added by OpenGL 2.0).
+         */
+    },
+    {"gpu_shader4",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::EXT_gpu_shader4, GLContext::Extensions_End}},
+    {"instanced_arrays",
+     GLVersion::GL3_3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_instanced_arrays, GLContext::NV_instanced_arrays,
+      GLContext::ANGLE_instanced_arrays, GLContext::Extensions_End}},
+    {
+        "instanced_non_arrays",
+        GLVersion::GL3_3,
+        GLESVersion::ES3,
+        GLContext::Extension_None,
+        {GLContext::ARB_instanced_arrays, GLContext::Extensions_End}
+        /* This is an expanded version of `instanced_arrays` that allows for all
+         * enabled active attrib arrays to have non-zero divisors.
+         * ANGLE_instanced_arrays and NV_instanced_arrays forbid this, but GLES3
+         * has no such restriction.
+         */
+    },
+    {"internalformat_query",
+     GLVersion::GL4_2,
+     GLESVersion::ES3,
+     GLContext::ARB_internalformat_query,
+     {GLContext::Extensions_End}},
+    {"invalidate_framebuffer",
+     GLVersion::GL4_3,
+     GLESVersion::ES3,
+     GLContext::ARB_invalidate_subdata,
+     {GLContext::Extensions_End}},
+    {"map_buffer_range",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::ARB_map_buffer_range,
+     {GLContext::EXT_map_buffer_range, GLContext::Extensions_End}},
+    {"multiview",
+     GLVersion::NONE,
+     GLESVersion::NONE,
+     GLContext::Extension_None,
+     {GLContext::ANGLE_multiview, GLContext::OVR_multiview2,
+      GLContext::Extensions_End}},
+    {
+        "occlusion_query",
+        GLVersion::GL2,
+        GLESVersion::NONE,
+        GLContext::Extension_None,
+        {GLContext::Extensions_End}
+        // XXX_occlusion_query depend on ARB_occlusion_query (added in
+        // OpenGL 2.0)
+    },
+    {
+        "occlusion_query_boolean",
+        kGLCoreVersionForES3Compat,
+        GLESVersion::ES3,
+        GLContext::ARB_ES3_compatibility,
+        {GLContext::EXT_occlusion_query_boolean, GLContext::Extensions_End}
+        /*
+         * XXX_occlusion_query_boolean provide ANY_SAMPLES_PASSED_CONSERVATIVE,
+         * but EXT_occlusion_query_boolean is only a OpenGL ES extension. But
+         * it is supported on desktop if ARB_ES3_compatibility because
+         * EXT_occlusion_query_boolean (added in OpenGL ES 3.0).
+         */
+    },
+    {
+        "occlusion_query2",
+        GLVersion::GL3_3,
+        GLESVersion::ES3,
+        GLContext::Extension_None,
+        {GLContext::ARB_occlusion_query2, GLContext::ARB_ES3_compatibility,
+         GLContext::EXT_occlusion_query_boolean, GLContext::Extensions_End}
+        /*
+         * XXX_occlusion_query2 (add in OpenGL 3.3) provide ANY_SAMPLES_PASSED,
+         * which is provided by ARB_occlusion_query2,
+         * EXT_occlusion_query_boolean (added in OpenGL ES 3.0) and
+         * ARB_ES3_compatibility
+         */
+    },
+    {"packed_depth_stencil",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::EXT_packed_depth_stencil, GLContext::OES_packed_depth_stencil,
+      GLContext::Extensions_End}},
+    {"prim_restart",
+     GLVersion::GL3_1,
+     GLESVersion::NONE,
+     GLContext::Extension_None,
+     {// GLContext::NV_primitive_restart, // Has different enum values.
+      GLContext::Extensions_End}},
+    {"prim_restart_fixed",
+     kGLCoreVersionForES3Compat,
+     GLESVersion::ES3,
+     GLContext::ARB_ES3_compatibility,
+     {GLContext::Extensions_End}},
+    {"provoking_vertex",
+     GLVersion::GL3_2,
+     GLESVersion::NONE,
+     GLContext::ARB_provoking_vertex,
+     {GLContext::ANGLE_provoking_vertex, GLContext::EXT_provoking_vertex,
+      GLContext::Extensions_End}},
+    {"query_counter",
+     GLVersion::GL3_3,
+     GLESVersion::NONE,
+     GLContext::ARB_timer_query,
+     {GLContext::ANGLE_timer_query, GLContext::EXT_disjoint_timer_query,
+      // EXT_timer_query does NOT support GL_TIMESTAMP retrieval with
+      // QueryCounter.
+      GLContext::Extensions_End}},
+    {
+        "query_objects",
+        GLVersion::GL2,
+        GLESVersion::ES3,
+        GLContext::Extension_None,
+        {GLContext::ANGLE_timer_query, GLContext::EXT_disjoint_timer_query,
+         GLContext::EXT_occlusion_query_boolean, GLContext::Extensions_End}
+        /*
+         * XXX_query_objects only provide entry points commonly supported by
+         * ARB_occlusion_query (added in OpenGL 2.0),
+         * EXT_occlusion_query_boolean (added in OpenGL ES 3.0), and
+         * ARB_timer_query (added in OpenGL 3.3)
+         */
+    },
+    {"query_time_elapsed",
+     GLVersion::GL3_3,
+     GLESVersion::NONE,
+     GLContext::ARB_timer_query,
+     {GLContext::ANGLE_timer_query, GLContext::EXT_disjoint_timer_query,
+      GLContext::EXT_timer_query, GLContext::Extensions_End}},
+    {"read_buffer",
+     GLVersion::GL2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::Extensions_End}},
+    {"renderbuffer_color_float",
+     GLVersion::GL3,
+     GLESVersion::ES3_2,
+     GLContext::Extension_None,
+     {GLContext::ARB_texture_float, GLContext::EXT_color_buffer_float,
+      GLContext::CHROMIUM_color_buffer_float_rgba, GLContext::Extensions_End}},
+    {"renderbuffer_color_half_float",
+     GLVersion::GL3,
+     GLESVersion::ES3_2,
+     GLContext::Extension_None,
+     {GLContext::ARB_texture_float, GLContext::EXT_color_buffer_float,
+      GLContext::EXT_color_buffer_half_float, GLContext::Extensions_End}},
+    {"robust_buffer_access_behavior",
+     GLVersion::NONE,
+     GLESVersion::NONE,
+     GLContext::Extension_None,
+     {GLContext::ARB_robust_buffer_access_behavior,
+      GLContext::KHR_robust_buffer_access_behavior, GLContext::Extensions_End}},
+    {"robustness",
+     GLVersion::NONE,
+     GLESVersion::NONE,
+     GLContext::Extension_None,
+     {GLContext::ARB_robustness, GLContext::EXT_robustness,
+      GLContext::KHR_robustness, GLContext::Extensions_End}},
+    {"sRGB",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::ARB_framebuffer_sRGB,
+     {GLContext::EXT_sRGB, GLContext::EXT_framebuffer_sRGB,
+      GLContext::Extensions_End}},
+    {"sampler_objects",
+     GLVersion::GL3_3,
+     GLESVersion::ES3,
+     GLContext::ARB_sampler_objects,
+     {GLContext::Extensions_End}},
+    {"seamless_cube_map_opt_in",
+     GLVersion::GL3_2,
+     GLESVersion::NONE,
+     GLContext::ARB_seamless_cube_map,
+     {GLContext::Extensions_End}},
+    {"shader_texture_lod",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_shader_texture_lod, GLContext::EXT_shader_texture_lod,
+      GLContext::Extensions_End}},
+    {// Do we have separate DRAW and READ framebuffer bind points?
+     "split_framebuffer",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::ARB_framebuffer_object,
+     {GLContext::ANGLE_framebuffer_blit,
+      GLContext::APPLE_framebuffer_multisample, GLContext::EXT_framebuffer_blit,
+      GLContext::NV_framebuffer_blit, GLContext::Extensions_End}},
+    {"standard_derivatives",
+     GLVersion::GL2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::OES_standard_derivatives, GLContext::Extensions_End}},
+    {"sync",
+     GLVersion::GL3_2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_sync, GLContext::APPLE_sync, GLContext::Extensions_End}},
+    {"texture_3D",
+     GLVersion::GL1_2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::OES_texture_3D, GLContext::Extensions_End}},
+    {"texture_3D_compressed",
+     GLVersion::GL1_3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_texture_compression, GLContext::OES_texture_3D,
+      GLContext::Extensions_End}},
+    {"texture_3D_copy",
+     GLVersion::GL1_2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::EXT_copy_texture, GLContext::OES_texture_3D,
+      GLContext::Extensions_End}},
+    {"texture_compression_bptc",
+     GLVersion::GL4_2,
+     GLESVersion::NONE,
+     GLContext::Extension_None,
+     {GLContext::ARB_texture_compression_bptc,
+      GLContext::EXT_texture_compression_bptc, GLContext::Extensions_End}},
+    {"texture_compression_rgtc",
+     GLVersion::GL3,
+     GLESVersion::NONE,
+     GLContext::Extension_None,
+     {GLContext::ARB_texture_compression_rgtc,
+      GLContext::EXT_texture_compression_rgtc, GLContext::Extensions_End}},
+    {"texture_float",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_texture_float, GLContext::OES_texture_float,
+      GLContext::Extensions_End}},
+    {"texture_float_linear",
+     GLVersion::GL3_1,
+     GLESVersion::NONE,
+     GLContext::Extension_None,
+     {GLContext::ARB_texture_float, GLContext::OES_texture_float_linear,
+      GLContext::Extensions_End}},
+    {
+        "texture_half_float",
+        GLVersion::GL3,
+        GLESVersion::ES3,
+        GLContext::Extension_None,
+        {GLContext::ARB_half_float_pixel, GLContext::ARB_texture_float,
+         GLContext::NV_half_float, GLContext::Extensions_End}
+        /**
+         * We are not including OES_texture_half_float in this feature, because:
+         *   GL_HALF_FLOAT     = 0x140B
+         *   GL_HALF_FLOAT_ARB = 0x140B == GL_HALF_FLOAT
+         *   GL_HALF_FLOAT_NV  = 0x140B == GL_HALF_FLOAT
+         *   GL_HALF_FLOAT_OES = 0x8D61 != GL_HALF_FLOAT
+         * WebGL handles this specifically with an OES_texture_half_float check.
+         */
+    },
+    {"texture_half_float_linear",
+     GLVersion::GL3_1,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_half_float_pixel, GLContext::ARB_texture_float,
+      GLContext::NV_half_float, GLContext::OES_texture_half_float_linear,
+      GLContext::Extensions_End}},
+    {"texture_non_power_of_two",
+     GLVersion::GL2,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::ARB_texture_non_power_of_two, GLContext::OES_texture_npot,
+      GLContext::Extensions_End}},
+    {"texture_norm16",
+     GLVersion::GL3_1,
+     GLESVersion::ES3_1,
+     GLContext::EXT_texture_norm16,
+     {GLContext::Extensions_End}},
+    {"texture_rg",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::ARB_texture_rg,
+     {GLContext::Extensions_End}},
+    {"texture_storage",
+     GLVersion::GL4_2,
+     GLESVersion::ES3,
+     GLContext::ARB_texture_storage,
+     {/*
+       * Not including GL_EXT_texture_storage here because it
+       * doesn't guarantee glTexStorage3D, which is required for
+       * WebGL 2.
+       */
+      GLContext::Extensions_End}},
+    {"texture_swizzle",
+     GLVersion::GL3_3,
+     GLESVersion::ES3,
+     GLContext::ARB_texture_swizzle,
+     {GLContext::Extensions_End}},
+    {"transform_feedback2",
+     GLVersion::GL4,
+     GLESVersion::ES3,
+     GLContext::ARB_transform_feedback2,
+     {GLContext::NV_transform_feedback2, GLContext::Extensions_End}},
+    {"uniform_buffer_object",
+     GLVersion::GL3_1,
+     GLESVersion::ES3,
+     GLContext::ARB_uniform_buffer_object,
+     {GLContext::Extensions_End}},
+    {"uniform_matrix_nonsquare",
+     GLVersion::GL2_1,
+     GLESVersion::ES3,
+     GLContext::Extension_None,
+     {GLContext::Extensions_End}},
+    {"vertex_array_object",
+     GLVersion::GL3,
+     GLESVersion::ES3,
+     GLContext::ARB_vertex_array_object,  // ARB extension
+     {GLContext::OES_vertex_array_object, GLContext::APPLE_vertex_array_object,
+      GLContext::Extensions_End}}};
+
+static inline const FeatureInfo& GetFeatureInfo(GLFeature feature) {
+  static_assert(MOZ_ARRAY_LENGTH(sFeatureInfoArr) == size_t(GLFeature::EnumMax),
+                "Mismatched lengths for sFeatureInfoInfos and GLFeature enums");
+
+  MOZ_ASSERT(feature < GLFeature::EnumMax,
+             "GLContext::GetFeatureInfoInfo : unknown <feature>");
+
+  return sFeatureInfoArr[size_t(feature)];
+}
+
+static inline uint32_t ProfileVersionForFeature(GLFeature feature,
+                                                ContextProfile profile) {
+  MOZ_ASSERT(profile != ContextProfile::Unknown,
+             "GLContext::ProfileVersionForFeature : unknown <profile>");
+
+  const FeatureInfo& featureInfo = GetFeatureInfo(feature);
+
+  if (profile == ContextProfile::OpenGLES)
+    return (uint32_t)featureInfo.mOpenGLESVersion;
+
+  return (uint32_t)featureInfo.mOpenGLVersion;
+}
+
+static bool IsFeaturePartOfProfileVersion(GLFeature feature,
+                                          ContextProfile profile,
+                                          unsigned int version) {
+  unsigned int profileVersion = ProfileVersionForFeature(feature, profile);
+
+  /**
+   * if `profileVersion` is zero, it means that no version of the profile
+   * added support for the feature.
+   */
+  return profileVersion && version >= profileVersion;
+}
+
+bool GLContext::IsFeatureProvidedByCoreSymbols(GLFeature feature) {
+  if (IsFeaturePartOfProfileVersion(feature, mProfile, mVersion)) return true;
+
+  if (IsExtensionSupported(
+          GetFeatureInfo(feature).mARBExtensionWithoutARBSuffix))
+    return true;
+
+  return false;
+}
+
+const char* GLContext::GetFeatureName(GLFeature feature) {
+  return GetFeatureInfo(feature).mName;
+}
+
+void GLContext::InitFeatures() {
+  for (size_t featureId = 0; featureId < size_t(GLFeature::EnumMax);
+       featureId++) {
+    GLFeature feature = GLFeature(featureId);
+
+    if (IsFeaturePartOfProfileVersion(feature, mProfile, mVersion)) {
+      mAvailableFeatures[featureId] = true;
+      continue;
+    }
+
+    mAvailableFeatures[featureId] = false;
+
+    const FeatureInfo& featureInfo = GetFeatureInfo(feature);
+
+    if (IsExtensionSupported(featureInfo.mARBExtensionWithoutARBSuffix)) {
+      mAvailableFeatures[featureId] = true;
+      continue;
+    }
+
+    for (size_t j = 0; true; j++) {
+      MOZ_ASSERT(j < kMAX_EXTENSION_GROUP_SIZE,
+                 "kMAX_EXTENSION_GROUP_SIZE too small");
+
+      if (featureInfo.mExtensions[j] == GLContext::Extensions_End) break;
+
+      if (IsExtensionSupported(featureInfo.mExtensions[j])) {
+        mAvailableFeatures[featureId] = true;
+        break;
+      }
+    }
+  }
+
+  if (ShouldDumpExts()) {
+    for (size_t featureId = 0; featureId < size_t(GLFeature::EnumMax);
+         featureId++) {
+      GLFeature feature = GLFeature(featureId);
+      printf_stderr("[%s] Feature::%s\n",
+                    IsSupported(feature) ? "enabled" : "disabled",
+                    GetFeatureName(feature));
+    }
+  }
+}
+
+void GLContext::MarkUnsupported(GLFeature feature) {
+  mAvailableFeatures[size_t(feature)] = false;
+
+  const FeatureInfo& featureInfo = GetFeatureInfo(feature);
+
+  for (size_t i = 0; true; i++) {
+    MOZ_ASSERT(i < kMAX_EXTENSION_GROUP_SIZE,
+               "kMAX_EXTENSION_GROUP_SIZE too small");
+
+    if (featureInfo.mExtensions[i] == GLContext::Extensions_End) break;
+
+    MarkExtensionUnsupported(featureInfo.mExtensions[i]);
+  }
+
+  MOZ_ASSERT(!IsSupported(feature), "GLContext::MarkUnsupported has failed!");
+
+  NS_WARNING(
+      nsPrintfCString("%s marked as unsupported", GetFeatureName(feature))
+          .get());
+}
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/GLContextGLX.h b/gfx/gl/GLContextGLX.h
new file mode 100644
index 0000000000..aa6dd3861c
--- /dev/null
+++ b/gfx/gl/GLContextGLX.h
@@ -0,0 +1,88 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXTGLX_H_
+#define GLCONTEXTGLX_H_
+
+#include "GLContext.h"
+#include "GLXLibrary.h"
+#include "mozilla/X11Util.h"
+
+namespace mozilla {
+namespace gl {
+
+class GLContextGLX : public GLContext {
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GLContextGLX, override)
+  static already_AddRefed<GLContextGLX> CreateGLContext(
+      const GLContextDesc&, std::shared_ptr<gfx::XlibDisplay> display,
+      GLXDrawable drawable, GLXFBConfig cfg, Drawable ownedPixmap = X11None);
+
+  static bool FindVisual(Display* display, int screen, int* const out_visualId);
+
+  // Finds a GLXFBConfig compatible with the provided window.
+  static bool FindFBConfigForWindow(
+      Display* display, int screen, Window window,
+      ScopedXFree<GLXFBConfig>* const out_scopedConfigArr,
+      GLXFBConfig* const out_config, int* const out_visid, bool aWebRender);
+
+  virtual ~GLContextGLX();
+
+  GLContextType GetContextType() const override { return GLContextType::GLX; }
+
+  static GLContextGLX* Cast(GLContext* gl) {
+    MOZ_ASSERT(gl->GetContextType() == GLContextType::GLX);
+    return static_cast<GLContextGLX*>(gl);
+  }
+
+  bool Init() override;
+
+  bool MakeCurrentImpl() const override;
+
+  bool IsCurrentImpl() const override;
+
+  Maybe<SymbolLoader> GetSymbolLoader() const override;
+
+  bool IsDoubleBuffered() const override;
+
+  bool SwapBuffers() override;
+
+  GLint GetBufferAge() const override;
+
+  void GetWSIInfo(nsCString* const out) const override;
+
+  // Overrides the current GLXDrawable backing the context and makes the
+  // context current.
+  bool OverrideDrawable(GLXDrawable drawable);
+
+  // Undoes the effect of a drawable override.
+  bool RestoreDrawable();
+
+ private:
+  friend class GLContextProviderGLX;
+
+  GLContextGLX(const GLContextDesc&, std::shared_ptr<gfx::XlibDisplay> aDisplay,
+               GLXDrawable aDrawable, GLXContext aContext, bool aDoubleBuffered,
+               Drawable aOwnedPixmap = X11None);
+
+  const GLXContext mContext;
+  const std::shared_ptr<gfx::XlibDisplay> mDisplay;
+  const GLXDrawable mDrawable;
+  // The X pixmap associated with the GLX pixmap. If this is provided, then this
+  // class assumes responsibility for freeing both. Otherwise, the user of this
+  // class is responsibility for freeing the drawables.
+  const Drawable mOwnedPixmap;
+  const bool mDoubleBuffered;
+
+  GLXLibrary* const mGLX;
+
+  const bool mOwnsContext = true;
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GLCONTEXTGLX_H_
diff --git a/gfx/gl/GLContextProvider.h b/gfx/gl/GLContextProvider.h
new file mode 100644
index 0000000000..c63f1ada0b
--- /dev/null
+++ b/gfx/gl/GLContextProvider.h
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXTPROVIDER_H_
+#define GLCONTEXTPROVIDER_H_
+
+#include "mozilla/AlreadyAddRefed.h"
+
+#include "GLContextTypes.h"
+#include "SurfaceTypes.h"
+
+#include "nsSize.h"  // for gfx::IntSize (needed by GLContextProviderImpl.h below)
+#include "nsStringFwd.h"  // needed by GLContextProviderImpl.h below
+
+class nsIWidget;
+
+namespace mozilla {
+namespace widget {
+class CompositorWidget;
+}
+namespace gl {
+
+#define IN_GL_CONTEXT_PROVIDER_H
+
+// Null is always there
+#define GL_CONTEXT_PROVIDER_NAME GLContextProviderNull
+#include "GLContextProviderImpl.h"
+#undef GL_CONTEXT_PROVIDER_NAME
+
+#ifdef XP_WIN
+#  define GL_CONTEXT_PROVIDER_NAME GLContextProviderWGL
+#  include "GLContextProviderImpl.h"
+#  undef GL_CONTEXT_PROVIDER_NAME
+#  define GL_CONTEXT_PROVIDER_DEFAULT GLContextProviderWGL
+#  define DEFAULT_IMPL WGL
+#endif
+
+#ifdef XP_MACOSX
+#  define GL_CONTEXT_PROVIDER_NAME GLContextProviderCGL
+#  include "GLContextProviderImpl.h"
+#  undef GL_CONTEXT_PROVIDER_NAME
+#  define GL_CONTEXT_PROVIDER_DEFAULT GLContextProviderCGL
+#endif
+
+#define GL_CONTEXT_PROVIDER_NAME GLContextProviderEGL
+#include "GLContextProviderImpl.h"
+#undef GL_CONTEXT_PROVIDER_NAME
+
+#if defined(MOZ_WIDGET_GTK)
+#  ifdef MOZ_X11
+#    define GL_CONTEXT_PROVIDER_NAME GLContextProviderGLX
+#    include "GLContextProviderImpl.h"
+#    undef GL_CONTEXT_PROVIDER_NAME
+#  endif
+#  define GL_CONTEXT_PROVIDER_NAME GLContextProviderLinux
+#  include "GLContextProviderImpl.h"
+#  undef GL_CONTEXT_PROVIDER_NAME
+#  define GL_CONTEXT_PROVIDER_DEFAULT GLContextProviderLinux
+#endif
+
+#ifndef GL_CONTEXT_PROVIDER_DEFAULT
+#  define GL_CONTEXT_PROVIDER_DEFAULT GLContextProviderEGL
+#endif
+
+#if defined(MOZ_WIDGET_UIKIT)
+#  define GL_CONTEXT_PROVIDER_NAME GLContextProviderEAGL
+#  include "GLContextProviderImpl.h"
+#  undef GL_CONTEXT_PROVIDER_NAME
+#  ifndef GL_CONTEXT_PROVIDER_DEFAULT
+#    define GL_CONTEXT_PROVIDER_DEFAULT GLContextProviderEAGL
+#  endif
+#endif
+
+#ifdef MOZ_GL_PROVIDER
+#  define GL_CONTEXT_PROVIDER_NAME MOZ_GL_PROVIDER
+#  include "GLContextProviderImpl.h"
+#  undef GL_CONTEXT_PROVIDER_NAME
+#  define GL_CONTEXT_PROVIDER_DEFAULT MOZ_GL_PROVIDER
+#endif
+
+#ifdef GL_CONTEXT_PROVIDER_DEFAULT
+typedef GL_CONTEXT_PROVIDER_DEFAULT GLContextProvider;
+#else
+typedef GLContextProviderNull GLContextProvider;
+#endif
+
+#undef IN_GL_CONTEXT_PROVIDER_H
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif
diff --git a/gfx/gl/GLContextProviderCGL.mm b/gfx/gl/GLContextProviderCGL.mm
new file mode 100644
index 0000000000..1b4049de3e
--- /dev/null
+++ b/gfx/gl/GLContextProviderCGL.mm
@@ -0,0 +1,341 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLContextProvider.h"
+#include "GLContextCGL.h"
+#include "GLLibraryLoader.h"
+#include "nsDebug.h"
+#include "nsIWidget.h"
+#include <OpenGL/gl.h>
+#include "gfxFailure.h"
+#include "mozilla/IntegerRange.h"
+#include "mozilla/StaticPrefs_gfx.h"
+#include "mozilla/StaticPrefs_gl.h"
+#include "mozilla/StaticPrefs_layout.h"
+#include "prenv.h"
+#include "prlink.h"
+#include "mozilla/ProfilerLabels.h"
+#include "MozFramebuffer.h"
+#include "mozilla/layers/CompositorOptions.h"
+#include "mozilla/widget/CompositorWidget.h"
+#include "ScopedGLHelpers.h"
+
+#include <OpenGL/OpenGL.h>
+
+namespace mozilla {
+namespace gl {
+
+using namespace mozilla::gfx;
+using namespace mozilla::widget;
+
+class CGLLibrary {
+ public:
+  bool EnsureInitialized() {
+    if (mInitialized) {
+      return true;
+    }
+    if (!mOGLLibrary) {
+      mOGLLibrary = PR_LoadLibrary("/System/Library/Frameworks/OpenGL.framework/OpenGL");
+      if (!mOGLLibrary) {
+        NS_WARNING("Couldn't load OpenGL Framework.");
+        return false;
+      }
+    }
+
+    mInitialized = true;
+    return true;
+  }
+
+  const auto& Library() const { return mOGLLibrary; }
+
+ private:
+  bool mInitialized = false;
+  PRLibrary* mOGLLibrary = nullptr;
+};
+
+CGLLibrary sCGLLibrary;
+
+GLContextCGL::GLContextCGL(const GLContextDesc& desc, NSOpenGLContext* context)
+    : GLContext(desc), mContext(context) {
+  CGDisplayRegisterReconfigurationCallback(DisplayReconfigurationCallback, this);
+}
+
+GLContextCGL::~GLContextCGL() {
+  MarkDestroyed();
+
+  CGDisplayRemoveReconfigurationCallback(DisplayReconfigurationCallback, this);
+
+  if (mContext) {
+    if ([NSOpenGLContext currentContext] == mContext) {
+      // Clear the current context before releasing. If we don't do
+      // this, the next time we call [NSOpenGLContext currentContext],
+      // "invalid context" will be printed to the console.
+      [NSOpenGLContext clearCurrentContext];
+    }
+    [mContext release];
+  }
+}
+
+CGLContextObj GLContextCGL::GetCGLContext() const {
+  return static_cast<CGLContextObj>([mContext CGLContextObj]);
+}
+
+bool GLContextCGL::MakeCurrentImpl() const {
+  if (mContext) {
+    [mContext makeCurrentContext];
+    MOZ_ASSERT(IsCurrentImpl());
+    // Use non-blocking swap in "ASAP mode".
+    // ASAP mode means that rendering is iterated as fast as possible.
+    // ASAP mode is entered when layout.frame_rate=0 (requires restart).
+    // If swapInt is 1, then glSwapBuffers will block and wait for a vblank signal.
+    // When we're iterating as fast as possible, however, we want a non-blocking
+    // glSwapBuffers, which will happen when swapInt==0.
+    GLint swapInt = StaticPrefs::layout_frame_rate() == 0 ? 0 : 1;
+    [mContext setValues:&swapInt forParameter:NSOpenGLCPSwapInterval];
+  }
+  return true;
+}
+
+bool GLContextCGL::IsCurrentImpl() const { return [NSOpenGLContext currentContext] == mContext; }
+
+/* static */ void GLContextCGL::DisplayReconfigurationCallback(CGDirectDisplayID aDisplay,
+                                                               CGDisplayChangeSummaryFlags aFlags,
+                                                               void* aUserInfo) {
+  if (aFlags & kCGDisplaySetModeFlag) {
+    static_cast<GLContextCGL*>(aUserInfo)->mActiveGPUSwitchMayHaveOccurred = true;
+  }
+}
+
+static NSOpenGLContext* CreateWithFormat(const NSOpenGLPixelFormatAttribute* attribs) {
+  NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
+  if (!format) {
+    NS_WARNING("Failed to create NSOpenGLPixelFormat.");
+    return nullptr;
+  }
+
+  NSOpenGLContext* context = [[NSOpenGLContext alloc] initWithFormat:format shareContext:nullptr];
+
+  [format release];
+
+  return context;
+}
+
+// Get the "OpenGL display mask" for a fresh context. The return value of this
+// function depends on the time at which this function is called.
+// In practice, on a Macbook Pro with an integrated and a discrete GPU, this function returns the
+// display mask for the GPU that currently drives the internal display.
+//
+// Quick reference of the concepts involved in the code below:
+//   GPU switch: On Mac devices with an integrated and a discrete GPU, a GPU switch changes which
+//     GPU drives the internal display. Both GPUs are still usable at all times. (When the
+//     integrated GPU is driving the internal display, using the discrete GPU can incur a longer
+//     warm-up cost.)
+//   Virtual screen: A CGL concept. A "virtual screen" corresponds to a GL renderer. There's one
+//     for the integrated GPU, one for each discrete GPU, and one for the Apple software renderer.
+//     The list of virtual screens is per-NSOpenGLPixelFormat; it is filtered down to only the
+//     renderers that support the requirements from the pixel format attributes. Indexes into this
+//     list (such as currentVirtualScreen) cannot be used interchangably across different
+//     NSOpenGLPixelFormat instances.
+//   Display mask: A bitset per GL renderer. Different renderers have disjoint display masks. The
+//     Apple software renderer has all bits zeroed. For each CGDirectDisplayID,
+//     CGDisplayIDToOpenGLDisplayMask(displayID) returns a single bit in the display mask.
+//   CGDirectDisplayID: An ID for each (physical screen, GPU which can drive this screen) pair. The
+//     current CGDirectDisplayID for an NSScreen object can be obtained using [[[screen
+//     deviceDescription] objectForKey:@"NSScreenNumber"] unsignedIntValue]; it changes depending on
+//     which GPU is currently driving the screen.
+static CGOpenGLDisplayMask GetFreshContextDisplayMask() {
+  NSOpenGLPixelFormatAttribute attribs[] = {NSOpenGLPFAAllowOfflineRenderers, 0};
+  NSOpenGLPixelFormat* pixelFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
+  MOZ_RELEASE_ASSERT(pixelFormat);
+  NSOpenGLContext* context = [[NSOpenGLContext alloc] initWithFormat:pixelFormat
+                                                        shareContext:nullptr];
+  GLint displayMask = 0;
+  [pixelFormat getValues:&displayMask
+            forAttribute:NSOpenGLPFAScreenMask
+        forVirtualScreen:[context currentVirtualScreen]];
+  [pixelFormat release];
+  [context release];
+  return static_cast<CGOpenGLDisplayMask>(displayMask);
+}
+
+static bool IsSameGPU(CGOpenGLDisplayMask mask1, CGOpenGLDisplayMask mask2) {
+  if ((mask1 & mask2) != 0) {
+    return true;
+  }
+  // Both masks can be zero, when using the Apple software renderer.
+  return !mask1 && !mask2;
+}
+
+void GLContextCGL::MigrateToActiveGPU() {
+  if (!mActiveGPUSwitchMayHaveOccurred.compareExchange(true, false)) {
+    return;
+  }
+
+  CGOpenGLDisplayMask newPreferredDisplayMask = GetFreshContextDisplayMask();
+  NSOpenGLPixelFormat* pixelFormat = [mContext pixelFormat];
+  GLint currentVirtualScreen = [mContext currentVirtualScreen];
+  GLint currentDisplayMask = 0;
+  [pixelFormat getValues:&currentDisplayMask
+            forAttribute:NSOpenGLPFAScreenMask
+        forVirtualScreen:currentVirtualScreen];
+  if (IsSameGPU(currentDisplayMask, newPreferredDisplayMask)) {
+    // No "virtual screen" change needed.
+    return;
+  }
+
+  // Find the "virtual screen" with a display mask that matches newPreferredDisplayMask, if
+  // available, and switch the context over to it.
+  // This code was inspired by equivalent functionality in -[NSOpenGLContext update] which only
+  // kicks in for contexts that present via a CAOpenGLLayer.
+  for (const auto i : IntegerRange([pixelFormat numberOfVirtualScreens])) {
+    GLint displayMask = 0;
+    [pixelFormat getValues:&displayMask forAttribute:NSOpenGLPFAScreenMask forVirtualScreen:i];
+    if (IsSameGPU(displayMask, newPreferredDisplayMask)) {
+      CGLSetVirtualScreen([mContext CGLContextObj], i);
+      return;
+    }
+  }
+}
+
+GLenum GLContextCGL::GetPreferredARGB32Format() const { return LOCAL_GL_BGRA; }
+
+bool GLContextCGL::SwapBuffers() {
+  AUTO_PROFILER_LABEL("GLContextCGL::SwapBuffers", GRAPHICS);
+
+  // We do not have a default framebuffer. Just do a flush.
+  // Flushing is necessary if we want our IOSurfaces to have the correct
+  // content once they're picked up by the WindowServer from our CALayers.
+  fFlush();
+
+  return true;
+}
+
+void GLContextCGL::GetWSIInfo(nsCString* const out) const { out->AppendLiteral("CGL"); }
+
+Maybe<SymbolLoader> GLContextCGL::GetSymbolLoader() const {
+  const auto& lib = sCGLLibrary.Library();
+  return Some(SymbolLoader(*lib));
+}
+
+already_AddRefed<GLContext> GLContextProviderCGL::CreateForCompositorWidget(
+    CompositorWidget* aCompositorWidget, bool aHardwareWebRender, bool aForceAccelerated) {
+  CreateContextFlags flags = CreateContextFlags::ALLOW_OFFLINE_RENDERER;
+  if (aForceAccelerated) {
+    flags |= CreateContextFlags::FORBID_SOFTWARE;
+  }
+  if (!aHardwareWebRender) {
+    flags |= CreateContextFlags::REQUIRE_COMPAT_PROFILE;
+  }
+  nsCString failureUnused;
+  return CreateHeadless({flags}, &failureUnused);
+}
+
+static RefPtr<GLContextCGL> CreateOffscreenFBOContext(GLContextCreateDesc desc) {
+  if (!sCGLLibrary.EnsureInitialized()) {
+    return nullptr;
+  }
+
+  NSOpenGLContext* context = nullptr;
+
+  std::vector<NSOpenGLPixelFormatAttribute> attribs;
+  auto& flags = desc.flags;
+
+  if (!StaticPrefs::gl_allow_high_power()) {
+    flags &= ~CreateContextFlags::HIGH_POWER;
+  }
+  if (flags & CreateContextFlags::ALLOW_OFFLINE_RENDERER ||
+      !(flags & CreateContextFlags::HIGH_POWER)) {
+    // This is really poorly named on Apple's part, but "AllowOfflineRenderers" means
+    // that we want to allow running on the iGPU instead of requiring the dGPU.
+    attribs.push_back(NSOpenGLPFAAllowOfflineRenderers);
+  }
+
+  if (flags & CreateContextFlags::FORBID_SOFTWARE) {
+    if (flags & CreateContextFlags::FORBID_HARDWARE) {
+      NS_WARNING("Both !hardware and !software.");
+      return nullptr;
+    }
+    attribs.push_back(NSOpenGLPFAAccelerated);
+  }
+  if (flags & CreateContextFlags::FORBID_HARDWARE) {
+    /* NSOpenGLPFARendererID:
+     * > OpenGL renderers that match the specified ID are preferred.
+     * > Constants to select specific renderers are provided in the
+     * > GLRenderers.h header of the OpenGL framework.
+     * > Of note is kCGLRendererGenericID which selects the Apple software
+     * > renderer.
+     * > The other constants select renderers for specific hardware vendors.
+     */
+    attribs.push_back(NSOpenGLPFARendererID);
+    attribs.push_back(kCGLRendererGenericID);
+  }
+
+  if (!(flags & CreateContextFlags::REQUIRE_COMPAT_PROFILE)) {
+    auto coreAttribs = attribs;
+    coreAttribs.push_back(NSOpenGLPFAOpenGLProfile);
+    coreAttribs.push_back(NSOpenGLProfileVersion3_2Core);
+    coreAttribs.push_back(0);
+    context = CreateWithFormat(coreAttribs.data());
+  }
+
+  if (!context) {
+    attribs.push_back(0);
+    context = CreateWithFormat(attribs.data());
+  }
+
+  if (!context) {
+    NS_WARNING("Failed to create NSOpenGLContext.");
+    return nullptr;
+  }
+
+  RefPtr<GLContextCGL> glContext = new GLContextCGL({desc, true}, context);
+
+  if (flags & CreateContextFlags::PREFER_MULTITHREADED) {
+    CGLEnable(glContext->GetCGLContext(), kCGLCEMPEngine);
+  }
+  return glContext;
+}
+
+already_AddRefed<GLContext> GLContextProviderCGL::CreateHeadless(const GLContextCreateDesc& desc,
+                                                                 nsACString* const out_failureId) {
+  auto gl = CreateOffscreenFBOContext(desc);
+  if (!gl) {
+    *out_failureId = "FEATURE_FAILURE_CGL_FBO"_ns;
+    return nullptr;
+  }
+
+  if (!gl->Init()) {
+    *out_failureId = "FEATURE_FAILURE_CGL_INIT"_ns;
+    NS_WARNING("Failed during Init.");
+    return nullptr;
+  }
+
+  return gl.forget();
+}
+
+static RefPtr<GLContext> gGlobalContext;
+
+GLContext* GLContextProviderCGL::GetGlobalContext() {
+  static bool triedToCreateContext = false;
+  if (!triedToCreateContext) {
+    triedToCreateContext = true;
+
+    MOZ_RELEASE_ASSERT(!gGlobalContext);
+    nsCString discardFailureId;
+    RefPtr<GLContext> temp = CreateHeadless({}, &discardFailureId);
+    gGlobalContext = temp;
+
+    if (!gGlobalContext) {
+      NS_WARNING("Couldn't init gGlobalContext.");
+    }
+  }
+
+  return gGlobalContext;
+}
+
+void GLContextProviderCGL::Shutdown() { gGlobalContext = nullptr; }
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/GLContextProviderEAGL.mm b/gfx/gl/GLContextProviderEAGL.mm
new file mode 100644
index 0000000000..4aabe89df1
--- /dev/null
+++ b/gfx/gl/GLContextProviderEAGL.mm
@@ -0,0 +1,211 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLContextProvider.h"
+#include "GLContextEAGL.h"
+#include "nsDebug.h"
+#include "nsIWidget.h"
+#include "gfxFailure.h"
+#include "prenv.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/ProfilerLabels.h"
+#include "mozilla/layers/CompositorOptions.h"
+#include "mozilla/widget/CompositorWidget.h"
+
+#import <UIKit/UIKit.h>
+
+namespace mozilla {
+namespace gl {
+
+using namespace mozilla::widget;
+
+GLContextEAGL::GLContextEAGL(const GLContextDesc& desc, EAGLContext* context,
+                             GLContext* sharedContext)
+    : GLContext(desc, sharedContext), mContext(context) {}
+
+GLContextEAGL::~GLContextEAGL() {
+  MakeCurrent();
+
+  if (mBackbufferFB) {
+    fDeleteFramebuffers(1, &mBackbufferFB);
+  }
+
+  if (mBackbufferRB) {
+    fDeleteRenderbuffers(1, &mBackbufferRB);
+  }
+
+  MarkDestroyed();
+
+  if (mLayer) {
+    mLayer = nil;
+  }
+
+  if (mContext) {
+    [EAGLContext setCurrentContext:nil];
+    [mContext release];
+  }
+}
+
+bool GLContextEAGL::AttachToWindow(nsIWidget* aWidget) {
+  // This should only be called once
+  MOZ_ASSERT(!mBackbufferFB && !mBackbufferRB);
+
+  UIView* view = reinterpret_cast<UIView*>(aWidget->GetNativeData(NS_NATIVE_WIDGET));
+
+  if (!view) {
+    MOZ_CRASH("no view!");
+  }
+
+  mLayer = [view layer];
+
+  fGenFramebuffers(1, &mBackbufferFB);
+  return RecreateRB();
+}
+
+bool GLContextEAGL::RecreateRB() {
+  MakeCurrent();
+
+  CAEAGLLayer* layer = (CAEAGLLayer*)mLayer;
+
+  if (mBackbufferRB) {
+    // It doesn't seem to be enough to just call renderbufferStorage: below,
+    // we apparently have to recreate the RB.
+    fDeleteRenderbuffers(1, &mBackbufferRB);
+    mBackbufferRB = 0;
+  }
+
+  fGenRenderbuffers(1, &mBackbufferRB);
+  fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, mBackbufferRB);
+
+  [mContext renderbufferStorage:LOCAL_GL_RENDERBUFFER fromDrawable:layer];
+
+  fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, mBackbufferFB);
+  fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, LOCAL_GL_RENDERBUFFER,
+                           mBackbufferRB);
+
+  return LOCAL_GL_FRAMEBUFFER_COMPLETE == fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
+}
+
+bool GLContextEAGL::MakeCurrentImpl() const {
+  if (mContext) {
+    if (![EAGLContext setCurrentContext:mContext]) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool GLContextEAGL::IsCurrentImpl() const { return [EAGLContext currentContext] == mContext; }
+
+static PRFuncPtr GLAPIENTRY GetLoadedProcAddress(const char* const name) {
+  PRLibrary* lib = nullptr;
+  const auto& ret = PR_FindFunctionSymbolAndLibrary(name, &leakedLibRef);
+  if (lib) {
+    PR_UnloadLibrary(lib);
+  }
+  return ret;
+}
+
+Maybe<SymbolLoader> GLContextEAGL::GetSymbolLoader() const {
+  return Some(SymbolLoader(&GetLoadedProcAddress));
+}
+
+bool GLContextEAGL::IsDoubleBuffered() const { return true; }
+
+bool GLContextEAGL::SwapBuffers() {
+  AUTO_PROFILER_LABEL("GLContextEAGL::SwapBuffers", GRAPHICS);
+
+  [mContext presentRenderbuffer:LOCAL_GL_RENDERBUFFER];
+  return true;
+}
+
+void GLContextEAGL::GetWSIInfo(nsCString* const out) const { out->AppendLiteral("EAGL"); }
+
+static GLContextEAGL* GetGlobalContextEAGL() {
+  return static_cast<GLContextEAGL*>(GLContextProviderEAGL::GetGlobalContext());
+}
+
+static RefPtr<GLContext> CreateEAGLContext(const GLContextDesc& desc,
+                                           GLContextEAGL* sharedContext) {
+  EAGLRenderingAPI apis[] = {kEAGLRenderingAPIOpenGLES3, kEAGLRenderingAPIOpenGLES2};
+
+  // Try to create a GLES3 context if we can, otherwise fall back to GLES2
+  EAGLContext* context = nullptr;
+  for (EAGLRenderingAPI api : apis) {
+    if (sharedContext) {
+      context = [[EAGLContext alloc] initWithAPI:api
+                                      sharegroup:sharedContext->GetEAGLContext().sharegroup];
+    } else {
+      context = [[EAGLContext alloc] initWithAPI:api];
+    }
+
+    if (context) {
+      break;
+    }
+  }
+
+  if (!context) {
+    return nullptr;
+  }
+
+  RefPtr<GLContextEAGL> glContext = new GLContextEAGL(desc, context, sharedContext);
+  if (!glContext->Init()) {
+    glContext = nullptr;
+    return nullptr;
+  }
+
+  return glContext;
+}
+
+already_AddRefed<GLContext> GLContextProviderEAGL::CreateForCompositorWidget(
+    CompositorWidget* aCompositorWidget, bool aHardwareWebRender, bool aForceAccelerated) {
+  if (!aCompositorWidget) {
+    MOZ_ASSERT(false);
+    return nullptr;
+  }
+
+  const GLContextDesc desc = {};
+  auto glContext = CreateEAGLContext(desc, GetGlobalContextEAGL());
+  if (!glContext) {
+    return nullptr;
+  }
+
+  if (!GLContextEAGL::Cast(glContext)->AttachToWindow(aCompositorWidget->RealWidget())) {
+    return nullptr;
+  }
+
+  return glContext.forget();
+}
+
+already_AddRefed<GLContext> GLContextProviderEAGL::CreateHeadless(
+    const GLContextCreateDesc& createDesc, nsACString* const out_failureId) {
+  auto desc = GLContextDesc{createDesc};
+  desc.isOffcreen = true;
+  return CreateEAGLContext(desc, GetGlobalContextEAGL()).forget();
+}
+
+static RefPtr<GLContext> gGlobalContext;
+
+GLContext* GLContextProviderEAGL::GetGlobalContext() {
+  static bool triedToCreateContext = false;
+  if (!triedToCreateContext) {
+    triedToCreateContext = true;
+
+    MOZ_RELEASE_ASSERT(!gGlobalContext, "GFX: Global GL context already initialized.");
+    RefPtr<GLContext> temp = CreateHeadless(CreateContextFlags::NONE);
+    gGlobalContext = temp;
+
+    if (!gGlobalContext) {
+      MOZ_CRASH("Failed to create global context");
+    }
+  }
+
+  return gGlobalContext;
+}
+
+void GLContextProviderEAGL::Shutdown() { gGlobalContext = nullptr; }
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/GLContextProviderEGL.cpp b/gfx/gl/GLContextProviderEGL.cpp
new file mode 100644
index 0000000000..a685d94eea
--- /dev/null
+++ b/gfx/gl/GLContextProviderEGL.cpp
@@ -0,0 +1,1254 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#if defined(MOZ_WIDGET_GTK)
+#  define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
+    ((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_EGL_WINDOW))
+#  define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget) \
+    (aWidget->AsGTK()->GetEGLNativeWindow())
+#elif defined(MOZ_WIDGET_ANDROID)
+#  define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
+    ((EGLNativeWindowType)aWidget->GetNativeData(NS_JAVA_SURFACE))
+#  define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget) \
+    (aWidget->AsAndroid()->GetEGLNativeWindow())
+#elif defined(XP_WIN)
+#  define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
+    ((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_WINDOW))
+#  define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget) \
+    ((EGLNativeWindowType)aWidget->AsWindows()->GetHwnd())
+#else
+#  define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
+    ((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_WINDOW))
+#  define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget)     \
+    ((EGLNativeWindowType)aWidget->RealWidget()->GetNativeData( \
+        NS_NATIVE_WINDOW))
+#endif
+
+#if defined(XP_UNIX)
+#  ifdef MOZ_WIDGET_ANDROID
+#    include <android/native_window.h>
+#    include <android/native_window_jni.h>
+#    include "mozilla/widget/AndroidCompositorWidget.h"
+#  endif
+
+#  define GLES2_LIB "libGLESv2.so"
+#  define GLES2_LIB2 "libGLESv2.so.2"
+
+#elif defined(XP_WIN)
+#  include "mozilla/widget/WinCompositorWidget.h"
+#  include "nsIFile.h"
+
+#  define GLES2_LIB "libGLESv2.dll"
+
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN 1
+#  endif
+
+#  include <windows.h>
+#else
+#  error "Platform not recognized"
+#endif
+
+#include "gfxCrashReporterUtils.h"
+#include "gfxFailure.h"
+#include "gfxPlatform.h"
+#include "gfxUtils.h"
+#include "GLBlitHelper.h"
+#include "GLContextEGL.h"
+#include "GLContextProvider.h"
+#include "GLLibraryEGL.h"
+#include "GLLibraryLoader.h"
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/Services.h"
+#include "mozilla/StaticPrefs_gfx.h"
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/gfx/BuildConstants.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/layers/CompositorOptions.h"
+#include "mozilla/widget/CompositorWidget.h"
+#include "nsDebug.h"
+#include "nsIWidget.h"
+#include "nsThreadUtils.h"
+#include "ScopedGLHelpers.h"
+
+#if defined(MOZ_WIDGET_GTK)
+#  include "mozilla/widget/GtkCompositorWidget.h"
+#  if defined(MOZ_WAYLAND)
+#    include <gdk/gdkwayland.h>
+#    include <wayland-egl.h>
+#    include "mozilla/WidgetUtilsGtk.h"
+#    include "mozilla/widget/nsWaylandDisplay.h"
+#  endif
+#endif
+
+struct wl_egl_window;
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace gl {
+
+using namespace mozilla::widget;
+
+#if defined(MOZ_WAYLAND)
+class SavedGLSurface {
+ public:
+  SavedGLSurface(struct wl_surface* aWaylandSurface,
+                 struct wl_egl_window* aEGLWindow);
+  ~SavedGLSurface();
+
+ private:
+  struct wl_surface* mWaylandSurface = nullptr;
+  struct wl_egl_window* mEGLWindow = nullptr;
+};
+
+static nsTHashMap<nsPtrHashKey<void>, SavedGLSurface*> sSavedGLSurfaces;
+
+void DeleteSavedGLSurface(EGLSurface surface) {
+  auto entry = sSavedGLSurfaces.Lookup(surface);
+  if (entry) {
+    delete entry.Data();
+    entry.Remove();
+  }
+}
+#endif
+
+static bool CreateConfigScreen(EglDisplay&, EGLConfig* const aConfig,
+                               const bool aEnableDepthBuffer,
+                               const bool aUseGles);
+
+// append three zeros at the end of attribs list to work around
+// EGL implementation bugs that iterate until they find 0, instead of
+// EGL_NONE. See bug 948406.
+#define EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS \
+  LOCAL_EGL_NONE, 0, 0, 0
+
+static EGLint kTerminationAttribs[] = {
+    EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS};
+
+static int next_power_of_two(int v) {
+  v--;
+  v |= v >> 1;
+  v |= v >> 2;
+  v |= v >> 4;
+  v |= v >> 8;
+  v |= v >> 16;
+  v++;
+
+  return v;
+}
+
+static bool is_power_of_two(int v) {
+  NS_ASSERTION(v >= 0, "bad value");
+
+  if (v == 0) return true;
+
+  return (v & (v - 1)) == 0;
+}
+
+static void DestroySurface(EglDisplay& egl, const EGLSurface oldSurface) {
+  if (oldSurface != EGL_NO_SURFACE) {
+    // TODO: This breaks TLS MakeCurrent caching.
+    egl.fMakeCurrent(EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    egl.fDestroySurface(oldSurface);
+#if defined(MOZ_WAYLAND)
+    DeleteSavedGLSurface(oldSurface);
+#endif
+  }
+}
+
+static EGLSurface CreateFallbackSurface(EglDisplay& egl,
+                                        const EGLConfig& config) {
+  if (egl.IsExtensionSupported(EGLExtension::KHR_surfaceless_context)) {
+    // We don't need a PBuffer surface in this case
+    return EGL_NO_SURFACE;
+  }
+
+  std::vector<EGLint> pbattrs;
+  pbattrs.push_back(LOCAL_EGL_WIDTH);
+  pbattrs.push_back(1);
+  pbattrs.push_back(LOCAL_EGL_HEIGHT);
+  pbattrs.push_back(1);
+
+  for (const auto& cur : kTerminationAttribs) {
+    pbattrs.push_back(cur);
+  }
+
+  EGLSurface surface = egl.fCreatePbufferSurface(config, pbattrs.data());
+  if (!surface) {
+    MOZ_CRASH("Failed to create fallback EGLSurface");
+  }
+
+  return surface;
+}
+
+static EGLSurface CreateSurfaceFromNativeWindow(
+    EglDisplay& egl, const EGLNativeWindowType window, const EGLConfig config) {
+  MOZ_ASSERT(window);
+  EGLSurface newSurface = EGL_NO_SURFACE;
+
+#ifdef MOZ_WIDGET_ANDROID
+  JNIEnv* const env = jni::GetEnvForThread();
+  ANativeWindow* const nativeWindow =
+      ANativeWindow_fromSurface(env, reinterpret_cast<jobject>(window));
+  if (!nativeWindow) {
+    gfxCriticalNote << "Failed to obtain native window from Surface";
+    return EGL_NO_SURFACE;
+  }
+  const auto& display = egl.mLib->fGetDisplay(EGL_DEFAULT_DISPLAY);
+  newSurface = egl.mLib->fCreateWindowSurface(display, config, nativeWindow, 0);
+  ANativeWindow_release(nativeWindow);
+#else
+  newSurface = egl.fCreateWindowSurface(config, window, 0);
+#endif
+  if (!newSurface) {
+    const auto err = egl.mLib->fGetError();
+    gfxCriticalNote << "Failed to create EGLSurface!: " << gfx::hexa(err);
+  }
+  return newSurface;
+}
+
+/* GLContextEGLFactory class was added as a friend of GLContextEGL
+ * so that it could access  GLContextEGL::CreateGLContext. This was
+ * done so that a new function would not need to be added to the shared
+ * GLContextProvider interface.
+ */
+class GLContextEGLFactory {
+ public:
+  static already_AddRefed<GLContext> Create(EGLNativeWindowType aWindow,
+                                            bool aHardwareWebRender);
+  static already_AddRefed<GLContext> CreateImpl(EGLNativeWindowType aWindow,
+                                                bool aHardwareWebRender,
+                                                bool aUseGles);
+
+ private:
+  GLContextEGLFactory() = default;
+  ~GLContextEGLFactory() = default;
+};
+
+already_AddRefed<GLContext> GLContextEGLFactory::CreateImpl(
+    EGLNativeWindowType aWindow, bool aHardwareWebRender, bool aUseGles) {
+  nsCString failureId;
+  const auto lib = GLLibraryEGL::Get(&failureId);
+  if (!lib) {
+    gfxCriticalNote << "Failed[3] to load EGL library: " << failureId.get();
+    return nullptr;
+  }
+  const auto egl = lib->CreateDisplay(true, &failureId);
+  if (!egl) {
+    gfxCriticalNote << "Failed[3] to create EGL library  display: "
+                    << failureId.get();
+    return nullptr;
+  }
+
+  bool doubleBuffered = true;
+
+  EGLConfig config;
+  if (aHardwareWebRender && egl->mLib->IsANGLE()) {
+    // Force enable alpha channel to make sure ANGLE use correct framebuffer
+    // formart
+    const int bpp = 32;
+    if (!CreateConfig(*egl, &config, bpp, false, aUseGles)) {
+      gfxCriticalNote << "Failed to create EGLConfig for WebRender ANGLE!";
+      return nullptr;
+    }
+  } else if (kIsWayland || kIsX11) {
+    const int bpp = 32;
+    if (!CreateConfig(*egl, &config, bpp, false, aUseGles)) {
+      gfxCriticalNote << "Failed to create EGLConfig for WebRender!";
+      return nullptr;
+    }
+  } else {
+    if (!CreateConfigScreen(*egl, &config,
+                            /* aEnableDepthBuffer */ false, aUseGles)) {
+      gfxCriticalNote << "Failed to create EGLConfig!";
+      return nullptr;
+    }
+  }
+
+  EGLSurface surface = EGL_NO_SURFACE;
+  if (aWindow) {
+    surface = mozilla::gl::CreateSurfaceFromNativeWindow(*egl, aWindow, config);
+    if (!surface) {
+      return nullptr;
+    }
+  }
+
+  CreateContextFlags flags = CreateContextFlags::NONE;
+  if (aHardwareWebRender &&
+      StaticPrefs::gfx_webrender_prefer_robustness_AtStartup()) {
+    flags |= CreateContextFlags::PREFER_ROBUSTNESS;
+  }
+  if (aHardwareWebRender && aUseGles) {
+    flags |= CreateContextFlags::PREFER_ES3;
+  }
+  if (!aHardwareWebRender) {
+    flags |= CreateContextFlags::REQUIRE_COMPAT_PROFILE;
+  }
+
+  const auto desc = GLContextDesc{{flags}, false};
+  RefPtr<GLContextEGL> gl = GLContextEGL::CreateGLContext(
+      egl, desc, config, surface, aUseGles, config, &failureId);
+  if (!gl) {
+    const auto err = egl->mLib->fGetError();
+    gfxCriticalNote << "Failed to create EGLContext!: " << gfx::hexa(err);
+    mozilla::gl::DestroySurface(*egl, surface);
+    return nullptr;
+  }
+
+  gl->MakeCurrent();
+  gl->SetIsDoubleBuffered(doubleBuffered);
+
+#ifdef MOZ_WIDGET_GTK
+  if (surface) {
+    const int interval = gfxVars::SwapIntervalEGL() ? 1 : 0;
+    egl->fSwapInterval(interval);
+  }
+#endif
+  if (aHardwareWebRender && egl->mLib->IsANGLE()) {
+    MOZ_ASSERT(doubleBuffered);
+    const int interval = gfxVars::SwapIntervalEGL() ? 1 : 0;
+    egl->fSwapInterval(interval);
+  }
+  return gl.forget();
+}
+
+already_AddRefed<GLContext> GLContextEGLFactory::Create(
+    EGLNativeWindowType aWindow, bool aHardwareWebRender) {
+  bool preferGles;
+#if defined(MOZ_WIDGET_ANDROID)
+  preferGles = true;
+#else
+  preferGles = StaticPrefs::gfx_egl_prefer_gles_enabled_AtStartup();
+#endif  // defined(MOZ_WIDGET_ANDROID)
+
+  RefPtr<GLContext> glContext =
+      CreateImpl(aWindow, aHardwareWebRender, preferGles);
+#if !defined(MOZ_WIDGET_ANDROID)
+  if (!glContext) {
+    glContext = CreateImpl(aWindow, aHardwareWebRender, !preferGles);
+  }
+#endif  // !defined(MOZ_WIDGET_ANDROID)
+  return glContext.forget();
+}
+
+/* static */
+EGLSurface GLContextEGL::CreateEGLSurfaceForCompositorWidget(
+    widget::CompositorWidget* aCompositorWidget, const EGLConfig aConfig) {
+  nsCString discardFailureId;
+  const auto egl = DefaultEglDisplay(&discardFailureId);
+  if (!egl) {
+    gfxCriticalNote << "Failed to load EGL library 6!";
+    return EGL_NO_SURFACE;
+  }
+
+  MOZ_ASSERT(aCompositorWidget);
+#ifdef MOZ_WAYLAND
+  // RenderCompositorEGL does not like EGL_NO_SURFACE as it fallbacks
+  // to SW rendering or claims itself as paused.
+  // In case we're missing valid native window because aCompositorWidget hidden,
+  // just create a fallback EGLSurface.
+  // Actual EGLSurface will be created by widget code later when
+  // aCompositorWidget becomes visible.
+  if (widget::GdkIsWaylandDisplay() && aCompositorWidget->IsHidden()) {
+    mozilla::gfx::IntSize pbSize(16, 16);
+    return CreateWaylandBufferSurface(*egl, aConfig, pbSize);
+  }
+#endif
+  EGLNativeWindowType window =
+      GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aCompositorWidget);
+  if (!window) {
+    gfxCriticalNote << "window is null";
+    return EGL_NO_SURFACE;
+  }
+
+  return mozilla::gl::CreateSurfaceFromNativeWindow(*egl, window, aConfig);
+}
+
+GLContextEGL::GLContextEGL(const std::shared_ptr<EglDisplay> egl,
+                           const GLContextDesc& desc, EGLConfig surfaceConfig,
+                           EGLSurface surface, EGLContext context)
+    : GLContext(desc, nullptr, false),
+      mEgl(egl),
+      mSurfaceConfig(surfaceConfig),
+      mContext(context),
+      mSurface(surface),
+      mFallbackSurface(CreateFallbackSurface(*mEgl, mSurfaceConfig)) {
+#ifdef DEBUG
+  printf_stderr("Initializing context %p surface %p on display %p\n", mContext,
+                mSurface, mEgl->mDisplay);
+#endif
+}
+
+void GLContextEGL::OnMarkDestroyed() {
+  if (mSurfaceOverride != EGL_NO_SURFACE) {
+    SetEGLSurfaceOverride(EGL_NO_SURFACE);
+  }
+}
+
+GLContextEGL::~GLContextEGL() {
+  MarkDestroyed();
+
+  // Wrapped context should not destroy eglContext/Surface
+  if (!mOwnsContext) {
+    return;
+  }
+
+#ifdef DEBUG
+  printf_stderr("Destroying context %p surface %p on display %p\n", mContext,
+                mSurface, mEgl->mDisplay);
+#endif
+
+  mEgl->fDestroyContext(mContext);
+
+  mozilla::gl::DestroySurface(*mEgl, mSurface);
+  mozilla::gl::DestroySurface(*mEgl, mFallbackSurface);
+}
+
+bool GLContextEGL::Init() {
+  if (!GLContext::Init()) return false;
+
+  bool current = MakeCurrent();
+  if (!current) {
+    gfx::LogFailure("Couldn't get device attachments for device."_ns);
+    return false;
+  }
+
+  mShareWithEGLImage =
+      mEgl->HasKHRImageBase() &&
+      mEgl->IsExtensionSupported(EGLExtension::KHR_gl_texture_2D_image) &&
+      IsExtensionSupported(OES_EGL_image);
+
+  return true;
+}
+
+bool GLContextEGL::BindTexImage() {
+  if (!mSurface) return false;
+
+  if (mBound && !ReleaseTexImage()) return false;
+
+  EGLBoolean success =
+      mEgl->fBindTexImage((EGLSurface)mSurface, LOCAL_EGL_BACK_BUFFER);
+  if (success == LOCAL_EGL_FALSE) return false;
+
+  mBound = true;
+  return true;
+}
+
+bool GLContextEGL::ReleaseTexImage() {
+  if (!mBound) return true;
+
+  if (!mSurface) return false;
+
+  EGLBoolean success;
+  success = mEgl->fReleaseTexImage((EGLSurface)mSurface, LOCAL_EGL_BACK_BUFFER);
+  if (success == LOCAL_EGL_FALSE) return false;
+
+  mBound = false;
+  return true;
+}
+
+void GLContextEGL::SetEGLSurfaceOverride(EGLSurface surf) {
+  mSurfaceOverride = surf;
+  DebugOnly<bool> ok = MakeCurrent(true);
+  MOZ_ASSERT(ok);
+}
+
+bool GLContextEGL::MakeCurrentImpl() const {
+  EGLSurface surface =
+      (mSurfaceOverride != EGL_NO_SURFACE) ? mSurfaceOverride : mSurface;
+  if (!surface) {
+    surface = mFallbackSurface;
+  }
+
+  const bool succeeded = mEgl->fMakeCurrent(surface, surface, mContext);
+  if (!succeeded) {
+    const auto eglError = mEgl->mLib->fGetError();
+    if (eglError == LOCAL_EGL_CONTEXT_LOST) {
+      OnContextLostError();
+    } else {
+      NS_WARNING("Failed to make GL context current!");
+#ifdef DEBUG
+      printf_stderr("EGL Error: 0x%04x\n", eglError);
+#endif
+    }
+  }
+
+  return succeeded;
+}
+
+bool GLContextEGL::IsCurrentImpl() const {
+  return mEgl->mLib->fGetCurrentContext() == mContext;
+}
+
+bool GLContextEGL::RenewSurface(CompositorWidget* aWidget) {
+  if (!mOwnsContext) {
+    return false;
+  }
+  // unconditionally release the surface and create a new one. Don't try to
+  // optimize this away. If we get here, then by definition we know that we want
+  // to get a new surface.
+  ReleaseSurface();
+  MOZ_ASSERT(aWidget);
+
+  EGLNativeWindowType nativeWindow =
+      GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget);
+#ifdef MOZ_WAYLAND
+  // In case we're missing native window on Wayland CompositorWidget is hidden.
+  // Don't create a fallback EGL surface but fails here.
+  // We need to repeat RenewSurface() when native window is available
+  // (CompositorWidget becomes visible).
+  if (GdkIsWaylandDisplay()) {
+    NS_WARNING("Failed to get native window");
+    return false;
+  }
+#endif
+  if (nativeWindow) {
+    mSurface = mozilla::gl::CreateSurfaceFromNativeWindow(*mEgl, nativeWindow,
+                                                          mSurfaceConfig);
+    if (!mSurface) {
+      NS_WARNING("Failed to create EGLSurface from native window");
+      return false;
+    }
+  }
+  const bool ok = MakeCurrent(true);
+  MOZ_ASSERT(ok);
+#ifdef MOZ_WIDGET_GTK
+  if (mSurface) {
+    const int interval = gfxVars::SwapIntervalEGL() ? 1 : 0;
+    mEgl->fSwapInterval(interval);
+  }
+#endif
+  return ok;
+}
+
+void GLContextEGL::ReleaseSurface() {
+  if (mOwnsContext) {
+    mozilla::gl::DestroySurface(*mEgl, mSurface);
+  }
+  if (mSurface == mSurfaceOverride) {
+    mSurfaceOverride = EGL_NO_SURFACE;
+  }
+  mSurface = EGL_NO_SURFACE;
+}
+
+Maybe<SymbolLoader> GLContextEGL::GetSymbolLoader() const {
+  return mEgl->mLib->GetSymbolLoader();
+}
+
+bool GLContextEGL::SwapBuffers() {
+  EGLSurface surface =
+      mSurfaceOverride != EGL_NO_SURFACE ? mSurfaceOverride : mSurface;
+  if (surface) {
+    if ((mEgl->IsExtensionSupported(
+             EGLExtension::EXT_swap_buffers_with_damage) ||
+         mEgl->IsExtensionSupported(
+             EGLExtension::KHR_swap_buffers_with_damage))) {
+      std::vector<EGLint> rects;
+      for (auto iter = mDamageRegion.RectIter(); !iter.Done(); iter.Next()) {
+        const IntRect& r = iter.Get();
+        rects.push_back(r.X());
+        rects.push_back(r.Y());
+        rects.push_back(r.Width());
+        rects.push_back(r.Height());
+      }
+      mDamageRegion.SetEmpty();
+      return mEgl->fSwapBuffersWithDamage(surface, rects.data(),
+                                          rects.size() / 4);
+    }
+    return mEgl->fSwapBuffers(surface);
+  } else {
+    return false;
+  }
+}
+
+void GLContextEGL::SetDamage(const nsIntRegion& aDamageRegion) {
+  mDamageRegion = aDamageRegion;
+}
+
+void GLContextEGL::GetWSIInfo(nsCString* const out) const {
+  out->AppendLiteral("EGL_VENDOR: ");
+  out->Append(
+      (const char*)mEgl->mLib->fQueryString(mEgl->mDisplay, LOCAL_EGL_VENDOR));
+
+  out->AppendLiteral("\nEGL_VERSION: ");
+  out->Append(
+      (const char*)mEgl->mLib->fQueryString(mEgl->mDisplay, LOCAL_EGL_VERSION));
+
+  out->AppendLiteral("\nEGL_EXTENSIONS: ");
+  out->Append((const char*)mEgl->mLib->fQueryString(mEgl->mDisplay,
+                                                    LOCAL_EGL_EXTENSIONS));
+
+#ifndef ANDROID  // This query will crash some old android.
+  out->AppendLiteral("\nEGL_EXTENSIONS(nullptr): ");
+  out->Append(
+      (const char*)mEgl->mLib->fQueryString(nullptr, LOCAL_EGL_EXTENSIONS));
+#endif
+}
+
+bool GLContextEGL::HasExtBufferAge() const {
+  return mEgl->IsExtensionSupported(EGLExtension::EXT_buffer_age);
+}
+
+bool GLContextEGL::HasKhrPartialUpdate() const {
+  return mEgl->IsExtensionSupported(EGLExtension::KHR_partial_update);
+}
+
+GLint GLContextEGL::GetBufferAge() const {
+  EGLSurface surface =
+      mSurfaceOverride != EGL_NO_SURFACE ? mSurfaceOverride : mSurface;
+
+  if (surface && (HasExtBufferAge() || HasKhrPartialUpdate())) {
+    EGLint result;
+    mEgl->fQuerySurface(surface, LOCAL_EGL_BUFFER_AGE_EXT, &result);
+    return result;
+  }
+
+  return 0;
+}
+
+#define LOCAL_EGL_CONTEXT_PROVOKING_VERTEX_DONT_CARE_MOZ 0x6000
+
+RefPtr<GLContextEGL> GLContextEGL::CreateGLContext(
+    const std::shared_ptr<EglDisplay> egl, const GLContextDesc& desc,
+    EGLConfig surfaceConfig, EGLSurface surface, const bool useGles,
+    EGLConfig contextConfig, nsACString* const out_failureId) {
+  const auto& flags = desc.flags;
+
+  std::vector<EGLint> required_attribs;
+
+  if (useGles) {
+    // TODO: This fBindAPI could be more thread-safe
+    if (egl->mLib->fBindAPI(LOCAL_EGL_OPENGL_ES_API) == LOCAL_EGL_FALSE) {
+      *out_failureId = "FEATURE_FAILURE_EGL_ES"_ns;
+      NS_WARNING("Failed to bind API to GLES!");
+      return nullptr;
+    }
+    required_attribs.push_back(LOCAL_EGL_CONTEXT_MAJOR_VERSION);
+    if (flags & CreateContextFlags::PREFER_ES3) {
+      required_attribs.push_back(3);
+    } else {
+      required_attribs.push_back(2);
+    }
+  } else {
+    if (egl->mLib->fBindAPI(LOCAL_EGL_OPENGL_API) == LOCAL_EGL_FALSE) {
+      *out_failureId = "FEATURE_FAILURE_EGL"_ns;
+      NS_WARNING("Failed to bind API to GL!");
+      return nullptr;
+    }
+    if (flags & CreateContextFlags::REQUIRE_COMPAT_PROFILE) {
+      required_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_PROFILE_MASK);
+      required_attribs.push_back(
+          LOCAL_EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT);
+      required_attribs.push_back(LOCAL_EGL_CONTEXT_MAJOR_VERSION);
+      required_attribs.push_back(2);
+    } else {
+      // !REQUIRE_COMPAT_PROFILE means core profle.
+      required_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_PROFILE_MASK);
+      required_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT);
+      required_attribs.push_back(LOCAL_EGL_CONTEXT_MAJOR_VERSION);
+      required_attribs.push_back(3);
+      required_attribs.push_back(LOCAL_EGL_CONTEXT_MINOR_VERSION);
+      required_attribs.push_back(2);
+    }
+  }
+
+  if ((flags & CreateContextFlags::PREFER_EXACT_VERSION) &&
+      egl->mLib->IsANGLE()) {
+    required_attribs.push_back(
+        LOCAL_EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE);
+    required_attribs.push_back(LOCAL_EGL_FALSE);
+  }
+
+  const auto debugFlags = GLContext::ChooseDebugFlags(flags);
+  if (!debugFlags && flags & CreateContextFlags::NO_VALIDATION &&
+      egl->IsExtensionSupported(EGLExtension::KHR_create_context_no_error)) {
+    required_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_NO_ERROR_KHR);
+    required_attribs.push_back(LOCAL_EGL_TRUE);
+  }
+
+  if (flags & CreateContextFlags::PROVOKING_VERTEX_DONT_CARE &&
+      egl->IsExtensionSupported(
+          EGLExtension::MOZ_create_context_provoking_vertex_dont_care)) {
+    required_attribs.push_back(
+        LOCAL_EGL_CONTEXT_PROVOKING_VERTEX_DONT_CARE_MOZ);
+    required_attribs.push_back(LOCAL_EGL_TRUE);
+  }
+
+  std::vector<EGLint> ext_robustness_attribs;
+  std::vector<EGLint> ext_rbab_attribs;  // RBAB: Robust Buffer Access Behavior
+  std::vector<EGLint> khr_robustness_attribs;
+  std::vector<EGLint> khr_rbab_attribs;  // RBAB: Robust Buffer Access Behavior
+  if (flags & CreateContextFlags::PREFER_ROBUSTNESS) {
+    std::vector<EGLint> base_robustness_attribs = required_attribs;
+    if (egl->IsExtensionSupported(
+            EGLExtension::NV_robustness_video_memory_purge)) {
+      base_robustness_attribs.push_back(
+          LOCAL_EGL_GENERATE_RESET_ON_VIDEO_MEMORY_PURGE_NV);
+      base_robustness_attribs.push_back(LOCAL_EGL_TRUE);
+    }
+
+    if (egl->IsExtensionSupported(
+            EGLExtension::EXT_create_context_robustness)) {
+      ext_robustness_attribs = base_robustness_attribs;
+      ext_robustness_attribs.push_back(
+          LOCAL_EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT);
+      ext_robustness_attribs.push_back(LOCAL_EGL_LOSE_CONTEXT_ON_RESET_EXT);
+
+      if (gfxVars::AllowEglRbab()) {
+        ext_rbab_attribs = ext_robustness_attribs;
+        ext_rbab_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT);
+        ext_rbab_attribs.push_back(LOCAL_EGL_TRUE);
+      }
+    }
+
+    if (egl->IsExtensionSupported(EGLExtension::KHR_create_context)) {
+      khr_robustness_attribs = base_robustness_attribs;
+      khr_robustness_attribs.push_back(
+          LOCAL_EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR);
+      khr_robustness_attribs.push_back(LOCAL_EGL_LOSE_CONTEXT_ON_RESET_KHR);
+
+      khr_rbab_attribs = khr_robustness_attribs;
+      khr_rbab_attribs.push_back(LOCAL_EGL_CONTEXT_FLAGS_KHR);
+      khr_rbab_attribs.push_back(
+          LOCAL_EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR);
+    }
+  }
+
+  const auto fnCreate = [&](const std::vector<EGLint>& attribs) {
+    auto terminated_attribs = attribs;
+
+    for (const auto& cur : kTerminationAttribs) {
+      terminated_attribs.push_back(cur);
+    }
+
+    return egl->fCreateContext(contextConfig, EGL_NO_CONTEXT,
+                               terminated_attribs.data());
+  };
+
+  EGLContext context;
+  do {
+    if (!khr_rbab_attribs.empty()) {
+      context = fnCreate(khr_rbab_attribs);
+      if (context) break;
+      NS_WARNING("Failed to create EGLContext with khr_rbab_attribs");
+    }
+
+    if (!ext_rbab_attribs.empty()) {
+      context = fnCreate(ext_rbab_attribs);
+      if (context) break;
+      NS_WARNING("Failed to create EGLContext with ext_rbab_attribs");
+    }
+
+    if (!khr_robustness_attribs.empty()) {
+      context = fnCreate(khr_robustness_attribs);
+      if (context) break;
+      NS_WARNING("Failed to create EGLContext with khr_robustness_attribs");
+    }
+
+    if (!ext_robustness_attribs.empty()) {
+      context = fnCreate(ext_robustness_attribs);
+      if (context) break;
+      NS_WARNING("Failed to create EGLContext with ext_robustness_attribs");
+    }
+
+    context = fnCreate(required_attribs);
+    if (context) break;
+    NS_WARNING("Failed to create EGLContext with required_attribs");
+
+    *out_failureId = "FEATURE_FAILURE_EGL_CREATE"_ns;
+    return nullptr;
+  } while (false);
+  MOZ_ASSERT(context);
+
+  RefPtr<GLContextEGL> glContext =
+      new GLContextEGL(egl, desc, surfaceConfig, surface, context);
+  if (!glContext->Init()) {
+    *out_failureId = "FEATURE_FAILURE_EGL_INIT"_ns;
+    return nullptr;
+  }
+
+  if (GLContext::ShouldSpew()) {
+    printf_stderr("new GLContextEGL %p on EGLDisplay %p\n", glContext.get(),
+                  egl->mDisplay);
+  }
+
+  return glContext;
+}
+
+// static
+EGLSurface GLContextEGL::CreatePBufferSurfaceTryingPowerOfTwo(
+    EglDisplay& egl, EGLConfig config, EGLenum bindToTextureFormat,
+    mozilla::gfx::IntSize& pbsize) {
+  nsTArray<EGLint> pbattrs(16);
+  EGLSurface surface = nullptr;
+
+TRY_AGAIN_POWER_OF_TWO:
+  pbattrs.Clear();
+  pbattrs.AppendElement(LOCAL_EGL_WIDTH);
+  pbattrs.AppendElement(pbsize.width);
+  pbattrs.AppendElement(LOCAL_EGL_HEIGHT);
+  pbattrs.AppendElement(pbsize.height);
+
+  if (bindToTextureFormat != LOCAL_EGL_NONE) {
+    pbattrs.AppendElement(LOCAL_EGL_TEXTURE_TARGET);
+    pbattrs.AppendElement(LOCAL_EGL_TEXTURE_2D);
+
+    pbattrs.AppendElement(LOCAL_EGL_TEXTURE_FORMAT);
+    pbattrs.AppendElement(bindToTextureFormat);
+  }
+
+  for (const auto& cur : kTerminationAttribs) {
+    pbattrs.AppendElement(cur);
+  }
+
+  surface = egl.fCreatePbufferSurface(config, &pbattrs[0]);
+  if (!surface) {
+    if (!is_power_of_two(pbsize.width) || !is_power_of_two(pbsize.height)) {
+      if (!is_power_of_two(pbsize.width))
+        pbsize.width = next_power_of_two(pbsize.width);
+      if (!is_power_of_two(pbsize.height))
+        pbsize.height = next_power_of_two(pbsize.height);
+
+      NS_WARNING("Failed to create pbuffer, trying power of two dims");
+      goto TRY_AGAIN_POWER_OF_TWO;
+    }
+
+    NS_WARNING("Failed to create pbuffer surface");
+    return nullptr;
+  }
+
+  return surface;
+}
+
+#if defined(MOZ_WAYLAND)
+SavedGLSurface::SavedGLSurface(struct wl_surface* aWaylandSurface,
+                               struct wl_egl_window* aEGLWindow)
+    : mWaylandSurface(aWaylandSurface), mEGLWindow(aEGLWindow) {}
+
+SavedGLSurface::~SavedGLSurface() {
+  if (mEGLWindow) {
+    wl_egl_window_destroy(mEGLWindow);
+  }
+  if (mWaylandSurface) {
+    wl_surface_destroy(mWaylandSurface);
+  }
+}
+
+// static
+EGLSurface GLContextEGL::CreateWaylandBufferSurface(
+    EglDisplay& egl, EGLConfig config, mozilla::gfx::IntSize& pbsize) {
+  wl_egl_window* eglwindow = nullptr;
+
+  struct wl_compositor* compositor =
+      gdk_wayland_display_get_wl_compositor(gdk_display_get_default());
+  struct wl_surface* wlsurface = wl_compositor_create_surface(compositor);
+  eglwindow = wl_egl_window_create(wlsurface, pbsize.width, pbsize.height);
+  if (!eglwindow) return nullptr;
+
+  const auto surface = egl.fCreateWindowSurface(
+      config, reinterpret_cast<EGLNativeWindowType>(eglwindow), 0);
+  if (surface) {
+    MOZ_ASSERT(!sSavedGLSurfaces.Contains(surface));
+    sSavedGLSurfaces.LookupOrInsert(surface,
+                                    new SavedGLSurface(wlsurface, eglwindow));
+  }
+  return surface;
+}
+#endif
+
+static const EGLint kEGLConfigAttribsRGB16[] = {
+    LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
+    LOCAL_EGL_RED_SIZE,     5,
+    LOCAL_EGL_GREEN_SIZE,   6,
+    LOCAL_EGL_BLUE_SIZE,    5,
+    LOCAL_EGL_ALPHA_SIZE,   0};
+
+static const EGLint kEGLConfigAttribsRGB24[] = {
+    LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
+    LOCAL_EGL_RED_SIZE,     8,
+    LOCAL_EGL_GREEN_SIZE,   8,
+    LOCAL_EGL_BLUE_SIZE,    8,
+    LOCAL_EGL_ALPHA_SIZE,   0};
+
+static const EGLint kEGLConfigAttribsRGBA32[] = {
+    LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
+    LOCAL_EGL_RED_SIZE,     8,
+    LOCAL_EGL_GREEN_SIZE,   8,
+    LOCAL_EGL_BLUE_SIZE,    8,
+    LOCAL_EGL_ALPHA_SIZE,   8};
+
+bool CreateConfig(EglDisplay& aEgl, EGLConfig* aConfig, int32_t aDepth,
+                  bool aEnableDepthBuffer, bool aUseGles, bool aAllowFallback) {
+  EGLConfig configs[64];
+  std::vector<EGLint> attribs;
+  EGLint ncfg = ArrayLength(configs);
+
+  switch (aDepth) {
+    case 16:
+      for (const auto& cur : kEGLConfigAttribsRGB16) {
+        attribs.push_back(cur);
+      }
+      break;
+    case 24:
+      for (const auto& cur : kEGLConfigAttribsRGB24) {
+        attribs.push_back(cur);
+      }
+      break;
+    case 32:
+      for (const auto& cur : kEGLConfigAttribsRGBA32) {
+        attribs.push_back(cur);
+      }
+      break;
+    default:
+      NS_ERROR("Unknown pixel depth");
+      return false;
+  }
+
+  if (aUseGles) {
+    attribs.push_back(LOCAL_EGL_RENDERABLE_TYPE);
+    attribs.push_back(LOCAL_EGL_OPENGL_ES2_BIT);
+  }
+  for (const auto& cur : kTerminationAttribs) {
+    attribs.push_back(cur);
+  }
+
+  if (!aEgl.fChooseConfig(attribs.data(), configs, ncfg, &ncfg) || ncfg < 1) {
+    return false;
+  }
+
+  Maybe<EGLConfig> fallbackConfig;
+
+  for (int j = 0; j < ncfg; ++j) {
+    EGLConfig config = configs[j];
+    EGLint r, g, b, a;
+    if (aEgl.fGetConfigAttrib(config, LOCAL_EGL_RED_SIZE, &r) &&
+        aEgl.fGetConfigAttrib(config, LOCAL_EGL_GREEN_SIZE, &g) &&
+        aEgl.fGetConfigAttrib(config, LOCAL_EGL_BLUE_SIZE, &b) &&
+        aEgl.fGetConfigAttrib(config, LOCAL_EGL_ALPHA_SIZE, &a) &&
+        ((aDepth == 16 && r == 5 && g == 6 && b == 5) ||
+         (aDepth == 24 && r == 8 && g == 8 && b == 8) ||
+         (aDepth == 32 && r == 8 && g == 8 && b == 8 && a == 8))) {
+      EGLint z;
+      if (aEnableDepthBuffer) {
+        if (!aEgl.fGetConfigAttrib(config, LOCAL_EGL_DEPTH_SIZE, &z) ||
+            z != 24) {
+          continue;
+        }
+      }
+#ifdef MOZ_X11
+      if (GdkIsX11Display()) {
+        int configVisualID;
+        if (!aEgl.fGetConfigAttrib(config, LOCAL_EGL_NATIVE_VISUAL_ID,
+                                   &configVisualID)) {
+          continue;
+        }
+
+        XVisualInfo visual_info_template, *visual_info;
+        int num_visuals;
+
+        visual_info_template.visualid = configVisualID;
+        visual_info =
+            XGetVisualInfo(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()),
+                           VisualIDMask, &visual_info_template, &num_visuals);
+
+        if (!visual_info || visual_info->depth != aDepth) {
+          if (aAllowFallback && !fallbackConfig) {
+            fallbackConfig = Some(config);
+          }
+          continue;
+        }
+      }
+#endif
+      *aConfig = config;
+      return true;
+    }
+  }
+
+  if (kIsX11 && fallbackConfig) {
+    *aConfig = fallbackConfig.value();
+    return true;
+  }
+
+  return false;
+}
+
+// Return true if a suitable EGLConfig was found and pass it out
+// through aConfig.  Return false otherwise.
+//
+// NB: It's entirely legal for the returned EGLConfig to be valid yet
+// have the value null.
+static bool CreateConfigScreen(EglDisplay& egl, EGLConfig* const aConfig,
+                               const bool aEnableDepthBuffer,
+                               const bool aUseGles) {
+  int32_t depth = gfxVars::ScreenDepth();
+  if (CreateConfig(egl, aConfig, depth, aEnableDepthBuffer, aUseGles)) {
+    return true;
+  }
+#ifdef MOZ_WIDGET_ANDROID
+  // Bug 736005
+  // Android doesn't always support 16 bit so also try 24 bit
+  if (depth == 16) {
+    return CreateConfig(egl, aConfig, 24, aEnableDepthBuffer, aUseGles);
+  }
+  // Bug 970096
+  // Some devices that have 24 bit screens only support 16 bit OpenGL?
+  if (depth == 24) {
+    return CreateConfig(egl, aConfig, 16, aEnableDepthBuffer, aUseGles);
+  }
+#endif
+  return false;
+}
+
+already_AddRefed<GLContext> GLContextProviderEGL::CreateForCompositorWidget(
+    CompositorWidget* aCompositorWidget, bool aHardwareWebRender,
+    bool /*aForceAccelerated*/) {
+  EGLNativeWindowType window = nullptr;
+  if (aCompositorWidget) {
+    window = GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aCompositorWidget);
+  }
+  return GLContextEGLFactory::Create(window, aHardwareWebRender);
+}
+
+EGLSurface GLContextEGL::CreateCompatibleSurface(void* aWindow) const {
+  MOZ_ASSERT(aWindow);
+  MOZ_RELEASE_ASSERT(mSurfaceConfig != EGL_NO_CONFIG);
+
+  // NOTE: aWindow is an ANativeWindow
+  EGLSurface surface = mEgl->fCreateWindowSurface(
+      mSurfaceConfig, reinterpret_cast<EGLNativeWindowType>(aWindow), nullptr);
+  if (!surface) {
+    gfxCriticalError() << "CreateCompatibleSurface failed: "
+                       << hexa(GetError());
+  }
+  return surface;
+}
+
+static void FillContextAttribs(bool es3, bool useGles, nsTArray<EGLint>* out) {
+  out->AppendElement(LOCAL_EGL_SURFACE_TYPE);
+#ifdef MOZ_WAYLAND
+  if (GdkIsWaylandDisplay()) {
+    // Wayland on desktop does not support PBuffer or FBO.
+    // We create a dummy wl_egl_window instead.
+    out->AppendElement(LOCAL_EGL_WINDOW_BIT);
+  } else
+#endif
+  {
+    out->AppendElement(LOCAL_EGL_PBUFFER_BIT);
+  }
+
+  if (useGles) {
+    out->AppendElement(LOCAL_EGL_RENDERABLE_TYPE);
+    if (es3) {
+      out->AppendElement(LOCAL_EGL_OPENGL_ES3_BIT_KHR);
+    } else {
+      out->AppendElement(LOCAL_EGL_OPENGL_ES2_BIT);
+    }
+  }
+
+  out->AppendElement(LOCAL_EGL_RED_SIZE);
+  out->AppendElement(8);
+
+  out->AppendElement(LOCAL_EGL_GREEN_SIZE);
+  out->AppendElement(8);
+
+  out->AppendElement(LOCAL_EGL_BLUE_SIZE);
+  out->AppendElement(8);
+
+  out->AppendElement(LOCAL_EGL_ALPHA_SIZE);
+  out->AppendElement(8);
+
+  out->AppendElement(LOCAL_EGL_DEPTH_SIZE);
+  out->AppendElement(0);
+
+  out->AppendElement(LOCAL_EGL_STENCIL_SIZE);
+  out->AppendElement(0);
+
+  // EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
+  out->AppendElement(LOCAL_EGL_NONE);
+  out->AppendElement(0);
+
+  out->AppendElement(0);
+  out->AppendElement(0);
+}
+
+/*
+/// Useful for debugging, but normally unused.
+static GLint GetAttrib(GLLibraryEGL* egl, EGLConfig config, EGLint attrib) {
+  EGLint bits = 0;
+  egl->fGetConfigAttrib(config, attrib, &bits);
+  MOZ_ASSERT(egl->fGetError() == LOCAL_EGL_SUCCESS);
+
+  return bits;
+}
+*/
+
+static EGLConfig ChooseConfig(EglDisplay& egl, const GLContextCreateDesc& desc,
+                              const bool useGles) {
+  nsTArray<EGLint> configAttribList;
+  FillContextAttribs(bool(desc.flags & CreateContextFlags::PREFER_ES3), useGles,
+                     &configAttribList);
+
+  const EGLint* configAttribs = configAttribList.Elements();
+
+  // The sorting dictated by the spec for eglChooseConfig reasonably assures
+  // that a reasonable 'best' config is on top.
+  const EGLint kMaxConfigs = 1;
+  EGLConfig configs[kMaxConfigs];
+  EGLint foundConfigs = 0;
+  if (!egl.fChooseConfig(configAttribs, configs, kMaxConfigs, &foundConfigs) ||
+      foundConfigs == 0) {
+    return EGL_NO_CONFIG;
+  }
+
+  EGLConfig config = configs[0];
+  return config;
+}
+
+#ifdef MOZ_X11
+/* static */
+bool GLContextEGL::FindVisual(int* const out_visualId) {
+  nsCString discardFailureId;
+  const auto egl = DefaultEglDisplay(&discardFailureId);
+  if (!egl) {
+    gfxCriticalNote
+        << "GLContextEGL::FindVisual(): Failed to load EGL library!";
+    return false;
+  }
+
+  EGLConfig config;
+  const int bpp = 32;
+  if (!CreateConfig(*egl, &config, bpp, /* aEnableDepthBuffer */ false,
+                    /* aUseGles */ false, /* aAllowFallback */ false)) {
+    // We are on a buggy driver. Do not return a visual so a fallback path can
+    // be used. See https://gitlab.freedesktop.org/mesa/mesa/-/issues/149
+    return false;
+  }
+  if (egl->fGetConfigAttrib(config, LOCAL_EGL_NATIVE_VISUAL_ID, out_visualId)) {
+    return true;
+  }
+  return false;
+}
+#endif
+
+/*static*/
+RefPtr<GLContextEGL> GLContextEGL::CreateWithoutSurface(
+    const std::shared_ptr<EglDisplay> egl, const GLContextCreateDesc& desc,
+    nsACString* const out_failureId) {
+  const auto WithUseGles = [&](const bool useGles) -> RefPtr<GLContextEGL> {
+#ifdef MOZ_WIDGET_GTK
+    // First try creating a context with no config and no surface, this is what
+    // we really want, and seems to be the only way to make selecting software
+    // Mesa init properly when it's not the first device.
+    if (egl->IsExtensionSupported(EGLExtension::KHR_no_config_context) &&
+        egl->IsExtensionSupported(EGLExtension::KHR_surfaceless_context)) {
+      // These extensions have been supported by mesa and nvidia drivers
+      // since 2014 or earlier, this is the preferred code path
+      auto fullDesc = GLContextDesc{desc};
+      fullDesc.isOffscreen = true;
+      RefPtr<GLContextEGL> gl = GLContextEGL::CreateGLContext(
+          egl, fullDesc, EGL_NO_CONFIG, EGL_NO_SURFACE, useGles, EGL_NO_CONFIG,
+          out_failureId);
+      if (gl) {
+        return gl;
+      }
+      NS_WARNING(
+          "Failed to create GLContext with no config and no surface, will try "
+          "ChooseConfig");
+    }
+#endif
+
+    const EGLConfig surfaceConfig = ChooseConfig(*egl, desc, useGles);
+    if (surfaceConfig == EGL_NO_CONFIG) {
+      *out_failureId = "FEATURE_FAILURE_EGL_NO_CONFIG"_ns;
+      NS_WARNING("Failed to find a compatible config.");
+      return nullptr;
+    }
+
+    if (GLContext::ShouldSpew()) {
+      egl->DumpEGLConfig(surfaceConfig);
+    }
+    const EGLConfig contextConfig =
+        egl->IsExtensionSupported(EGLExtension::KHR_no_config_context)
+            ? nullptr
+            : surfaceConfig;
+
+    auto dummySize = mozilla::gfx::IntSize{16, 16};
+    EGLSurface surface = nullptr;
+#ifdef MOZ_WAYLAND
+    if (GdkIsWaylandDisplay()) {
+      surface = GLContextEGL::CreateWaylandBufferSurface(*egl, surfaceConfig,
+                                                         dummySize);
+    } else
+#endif
+    {
+      surface = GLContextEGL::CreatePBufferSurfaceTryingPowerOfTwo(
+          *egl, surfaceConfig, LOCAL_EGL_NONE, dummySize);
+    }
+    if (!surface) {
+      *out_failureId = "FEATURE_FAILURE_EGL_POT"_ns;
+      NS_WARNING("Failed to create PBuffer for context!");
+      return nullptr;
+    }
+
+    auto fullDesc = GLContextDesc{desc};
+    fullDesc.isOffscreen = true;
+    RefPtr<GLContextEGL> gl =
+        GLContextEGL::CreateGLContext(egl, fullDesc, surfaceConfig, surface,
+                                      useGles, contextConfig, out_failureId);
+    if (!gl) {
+      NS_WARNING("Failed to create GLContext from PBuffer");
+      egl->fDestroySurface(surface);
+#if defined(MOZ_WAYLAND)
+      DeleteSavedGLSurface(surface);
+#endif
+      return nullptr;
+    }
+
+    return gl;
+  };
+
+  bool preferGles;
+#if defined(MOZ_WIDGET_ANDROID)
+  preferGles = true;
+#else
+  preferGles = StaticPrefs::gfx_egl_prefer_gles_enabled_AtStartup();
+#endif  // defined(MOZ_WIDGET_ANDROID)
+  RefPtr<GLContextEGL> gl = WithUseGles(preferGles);
+#if !defined(MOZ_WIDGET_ANDROID)
+  if (!gl) {
+    gl = WithUseGles(!preferGles);
+  }
+#endif  // !defined(MOZ_WIDGET_ANDROID)
+  return gl;
+}
+
+/*static*/
+already_AddRefed<GLContext> GLContextProviderEGL::CreateHeadless(
+    const GLContextCreateDesc& desc, nsACString* const out_failureId) {
+  const auto display = DefaultEglDisplay(out_failureId);
+  if (!display) {
+    return nullptr;
+  }
+  auto ret = GLContextEGL::CreateWithoutSurface(display, desc, out_failureId);
+  return ret.forget();
+}
+
+// Don't want a global context on Android as 1) share groups across 2 threads
+// fail on many Tegra drivers (bug 759225) and 2) some mobile devices have a
+// very strict limit on global number of GL contexts (bug 754257) and 3) each
+// EGL context eats 750k on B2G (bug 813783)
+/*static*/
+GLContext* GLContextProviderEGL::GetGlobalContext() { return nullptr; }
+
+// -
+
+/*static*/ void GLContextProviderEGL::Shutdown() { GLLibraryEGL::Shutdown(); }
+
+} /* namespace gl */
+} /* namespace mozilla */
+
+#undef EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
diff --git a/gfx/gl/GLContextProviderGLX.cpp b/gfx/gl/GLContextProviderGLX.cpp
new file mode 100644
index 0000000000..a0ecac3751
--- /dev/null
+++ b/gfx/gl/GLContextProviderGLX.cpp
@@ -0,0 +1,904 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifdef MOZ_WIDGET_GTK
+#  include <gdk/gdk.h>
+#  include <gdk/gdkx.h>
+#  define GET_NATIVE_WINDOW(aWidget) \
+    GDK_WINDOW_XID((GdkWindow*)aWidget->GetNativeData(NS_NATIVE_WINDOW))
+#endif
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include "X11UndefineNone.h"
+
+#include "mozilla/MathAlgorithms.h"
+#include "mozilla/StaticPtr.h"
+#include "mozilla/layers/CompositorOptions.h"
+#include "mozilla/Range.h"
+#include "mozilla/ScopeExit.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/StaticPrefs_gfx.h"
+#include "mozilla/StaticPrefs_layout.h"
+#include "mozilla/widget/CompositorWidget.h"
+#include "mozilla/widget/GtkCompositorWidget.h"
+#include "mozilla/Unused.h"
+
+#include "prenv.h"
+#include "GLContextProvider.h"
+#include "GLLibraryLoader.h"
+#include "nsDebug.h"
+#include "nsIWidget.h"
+#include "GLXLibrary.h"
+#include "gfxContext.h"
+#include "gfxEnv.h"
+#include "gfxPlatform.h"
+#include "GLContextGLX.h"
+#include "gfxUtils.h"
+#include "gfx2DGlue.h"
+#include "GLScreenBuffer.h"
+
+#include "gfxCrashReporterUtils.h"
+
+#ifdef MOZ_WIDGET_GTK
+#  include "gfxPlatformGtk.h"
+#endif
+
+namespace mozilla::gl {
+
+using namespace mozilla::gfx;
+using namespace mozilla::widget;
+
+GLXLibrary sGLXLibrary;
+
+static inline bool HasExtension(const char* aExtensions,
+                                const char* aRequiredExtension) {
+  return GLContext::ListHasExtension(
+      reinterpret_cast<const GLubyte*>(aExtensions), aRequiredExtension);
+}
+
+bool GLXLibrary::EnsureInitialized(Display* aDisplay) {
+  if (mInitialized) {
+    return true;
+  }
+
+  // Don't repeatedly try to initialize.
+  if (mTriedInitializing) {
+    return false;
+  }
+  mTriedInitializing = true;
+
+  MOZ_ASSERT(aDisplay);
+  if (!aDisplay) {
+    return false;
+  }
+
+  // Force enabling s3 texture compression. (Bug 774134)
+  PR_SetEnv("force_s3tc_enable=true");
+
+  if (!mOGLLibrary) {
+    // see e.g. bug 608526: it is intrinsically interesting to know whether we
+    // have dynamically linked to libGL.so.1 because at least the NVIDIA
+    // implementation requires an executable stack, which causes mprotect calls,
+    // which trigger glibc bug
+    // http://sourceware.org/bugzilla/show_bug.cgi?id=12225
+    const char* libGLfilename = "libGL.so.1";
+#if defined(__OpenBSD__) || defined(__NetBSD__)
+    libGLfilename = "libGL.so";
+#endif
+
+    const bool forceFeatureReport = false;
+    ScopedGfxFeatureReporter reporter(libGLfilename, forceFeatureReport);
+    mOGLLibrary = PR_LoadLibrary(libGLfilename);
+    if (!mOGLLibrary) {
+      NS_WARNING("Couldn't load OpenGL shared library.");
+      return false;
+    }
+    reporter.SetSuccessful();
+  }
+
+  if (gfxEnv::MOZ_GLX_DEBUG()) {
+    mDebug = true;
+  }
+
+#define SYMBOL(X)                 \
+  {                               \
+    (PRFuncPtr*)&mSymbols.f##X, { \
+      { "glX" #X }                \
+    }                             \
+  }
+#define END_OF_SYMBOLS \
+  {                    \
+    nullptr, {}        \
+  }
+
+  const SymLoadStruct symbols[] = {
+      /* functions that were in GLX 1.0 */
+      SYMBOL(DestroyContext),
+      SYMBOL(MakeCurrent),
+      SYMBOL(SwapBuffers),
+      SYMBOL(QueryVersion),
+      SYMBOL(GetConfig),
+      SYMBOL(GetCurrentContext),
+      SYMBOL(WaitGL),
+      SYMBOL(WaitX),
+
+      /* functions introduced in GLX 1.1 */
+      SYMBOL(QueryExtensionsString),
+      SYMBOL(GetClientString),
+      SYMBOL(QueryServerString),
+
+      /* functions introduced in GLX 1.3 */
+      SYMBOL(ChooseFBConfig),
+      SYMBOL(ChooseVisual),
+      SYMBOL(GetFBConfigAttrib),
+      SYMBOL(GetFBConfigs),
+      SYMBOL(CreatePixmap),
+      SYMBOL(DestroyPixmap),
+      SYMBOL(CreateNewContext),
+
+      // Core in GLX 1.4, ARB extension before.
+      {(PRFuncPtr*)&mSymbols.fGetProcAddress,
+       {{"glXGetProcAddress", "glXGetProcAddressARB"}}},
+      END_OF_SYMBOLS};
+
+  {
+    const SymbolLoader libLoader(*mOGLLibrary);
+    if (!libLoader.LoadSymbols(symbols)) {
+      NS_WARNING("Couldn't load required GLX symbols.");
+      return false;
+    }
+  }
+  const SymbolLoader pfnLoader(mSymbols.fGetProcAddress);
+
+  int screen = DefaultScreen(aDisplay);
+
+  {
+    int major, minor;
+    if (!fQueryVersion(aDisplay, &major, &minor) || major != 1 || minor < 3) {
+      NS_ERROR("GLX version older than 1.3. (released in 1998)");
+      return false;
+    }
+  }
+
+  const SymLoadStruct symbols_createcontext[] = {
+      SYMBOL(CreateContextAttribsARB), END_OF_SYMBOLS};
+
+  const SymLoadStruct symbols_videosync[] = {
+      SYMBOL(GetVideoSyncSGI), SYMBOL(WaitVideoSyncSGI), END_OF_SYMBOLS};
+
+  const SymLoadStruct symbols_swapcontrol[] = {SYMBOL(SwapIntervalEXT),
+                                               END_OF_SYMBOLS};
+
+  const SymLoadStruct symbols_querydrawable[] = {SYMBOL(QueryDrawable),
+                                                 END_OF_SYMBOLS};
+
+  const auto fnLoadSymbols = [&](const SymLoadStruct* symbols) {
+    if (pfnLoader.LoadSymbols(symbols)) return true;
+
+    ClearSymbols(symbols);
+    return false;
+  };
+
+  const char* clientVendor = fGetClientString(aDisplay, LOCAL_GLX_VENDOR);
+  const char* serverVendor =
+      fQueryServerString(aDisplay, screen, LOCAL_GLX_VENDOR);
+  const char* extensionsStr = fQueryExtensionsString(aDisplay, screen);
+
+  if (HasExtension(extensionsStr, "GLX_ARB_create_context") &&
+      HasExtension(extensionsStr, "GLX_ARB_create_context_profile") &&
+      fnLoadSymbols(symbols_createcontext)) {
+    mHasCreateContextAttribs = true;
+  }
+
+  if (HasExtension(extensionsStr, "GLX_ARB_create_context_robustness")) {
+    mHasRobustness = true;
+  }
+
+  if (HasExtension(extensionsStr, "GLX_NV_robustness_video_memory_purge")) {
+    mHasVideoMemoryPurge = true;
+  }
+
+  if (HasExtension(extensionsStr, "GLX_SGI_video_sync") &&
+      fnLoadSymbols(symbols_videosync)) {
+    mHasVideoSync = true;
+  }
+
+  if (!HasExtension(extensionsStr, "GLX_EXT_swap_control") ||
+      !fnLoadSymbols(symbols_swapcontrol)) {
+    NS_WARNING(
+        "GLX_swap_control unsupported, ASAP mode may still block on buffer "
+        "swaps.");
+  }
+
+  if (HasExtension(extensionsStr, "GLX_EXT_buffer_age") &&
+      fnLoadSymbols(symbols_querydrawable)) {
+    mHasBufferAge = true;
+  }
+
+  mIsATI = serverVendor && DoesStringMatch(serverVendor, "ATI");
+  mIsNVIDIA =
+      serverVendor && DoesStringMatch(serverVendor, "NVIDIA Corporation");
+  mClientIsMesa = clientVendor && DoesStringMatch(clientVendor, "Mesa");
+
+  mInitialized = true;
+
+  // This needs to be after `fQueryServerString` is called so that the
+  // driver is loaded.
+  MesaMemoryLeakWorkaround();
+
+  return true;
+}
+
+bool GLXLibrary::SupportsVideoSync(Display* aDisplay) {
+  if (!EnsureInitialized(aDisplay)) {
+    return false;
+  }
+
+  return mHasVideoSync;
+}
+
+static int (*sOldErrorHandler)(Display*, XErrorEvent*);
+static XErrorEvent sErrorEvent = {};
+
+static int GLXErrorHandler(Display* display, XErrorEvent* ev) {
+  if (!sErrorEvent.error_code) {
+    sErrorEvent = *ev;
+  }
+  return 0;
+}
+
+GLXLibrary::WrapperScope::WrapperScope(const GLXLibrary& glx,
+                                       const char* const funcName,
+                                       Display* aDisplay)
+    : mGlx(glx), mFuncName(funcName), mDisplay(aDisplay) {
+  if (mGlx.mDebug) {
+    sOldErrorHandler = XSetErrorHandler(GLXErrorHandler);
+  }
+}
+
+GLXLibrary::WrapperScope::~WrapperScope() {
+  if (mGlx.mDebug) {
+    if (mDisplay) {
+      FinishX(mDisplay);
+    }
+    if (sErrorEvent.error_code) {
+      char buffer[100] = {};
+      if (mDisplay) {
+        XGetErrorText(mDisplay, sErrorEvent.error_code, buffer, sizeof(buffer));
+      } else {
+        SprintfLiteral(buffer, "%d", sErrorEvent.error_code);
+      }
+      printf_stderr("X ERROR after %s: %s (%i) - Request: %i.%i, Serial: %lu",
+                    mFuncName, buffer, sErrorEvent.error_code,
+                    sErrorEvent.request_code, sErrorEvent.minor_code,
+                    sErrorEvent.serial);
+      MOZ_ASSERT_UNREACHABLE("AfterGLXCall sErrorEvent");
+    }
+    const auto was = XSetErrorHandler(sOldErrorHandler);
+    if (was != GLXErrorHandler) {
+      NS_WARNING("Concurrent XSetErrorHandlers");
+    }
+  }
+}
+
+// Returns the GTK display if available; otherwise, if a display was
+// previously opened by this method and is still open, returns a
+// reference to it; otherwise, opens a new connection.  (The non-GTK
+// cases are similar to what we do for EGL.)
+std::shared_ptr<XlibDisplay> GLXLibrary::GetDisplay() {
+  std::shared_ptr<XlibDisplay> display;
+
+#ifdef MOZ_WIDGET_GTK
+  static const bool kHaveGtk = !!gdk_display_get_default();
+  if (kHaveGtk) {
+    display = XlibDisplay::Borrow(DefaultXDisplay());
+  }
+#endif
+  if (display) {
+    return display;
+  }
+
+  auto ownDisplay = mOwnDisplay.Lock();
+  display = ownDisplay->lock();
+  if (display) {
+    return display;
+  }
+
+  display = XlibDisplay::Open(nullptr);
+  if (NS_WARN_IF(!display)) {
+    return nullptr;
+  }
+  *ownDisplay = display;
+  return display;
+}
+
+already_AddRefed<GLContextGLX> GLContextGLX::CreateGLContext(
+    const GLContextDesc& desc, std::shared_ptr<XlibDisplay> display,
+    GLXDrawable drawable, GLXFBConfig cfg, Drawable ownedPixmap) {
+  GLXLibrary& glx = sGLXLibrary;
+
+  int isDoubleBuffered = 0;
+  int err = glx.fGetFBConfigAttrib(*display, cfg, LOCAL_GLX_DOUBLEBUFFER,
+                                   &isDoubleBuffered);
+  if (LOCAL_GLX_BAD_ATTRIBUTE != err) {
+    if (ShouldSpew()) {
+      printf("[GLX] FBConfig is %sdouble-buffered\n",
+             isDoubleBuffered ? "" : "not ");
+    }
+  }
+
+  if (!glx.HasCreateContextAttribs()) {
+    NS_WARNING("Cannot create GLContextGLX without glxCreateContextAttribs");
+    return nullptr;
+  }
+
+  // -
+
+  const auto CreateWithAttribs =
+      [&](const std::vector<int>& attribs) -> RefPtr<GLContextGLX> {
+    auto terminated = attribs;
+    terminated.push_back(0);
+
+    const auto glxContext = glx.fCreateContextAttribs(
+        *display, cfg, nullptr, X11True, terminated.data());
+    if (!glxContext) return nullptr;
+    const RefPtr<GLContextGLX> ret = new GLContextGLX(
+        desc, display, drawable, glxContext, isDoubleBuffered, ownedPixmap);
+
+    if (!ret->Init()) return nullptr;
+
+    return ret;
+  };
+
+  // -
+
+  RefPtr<GLContextGLX> glContext;
+
+  std::vector<int> attribs;
+  attribs.insert(attribs.end(), {
+                                    LOCAL_GLX_RENDER_TYPE,
+                                    LOCAL_GLX_RGBA_TYPE,
+                                });
+  if (glx.HasVideoMemoryPurge()) {
+    attribs.insert(attribs.end(),
+                   {
+                       LOCAL_GLX_GENERATE_RESET_ON_VIDEO_MEMORY_PURGE_NV,
+                       LOCAL_GL_TRUE,
+                   });
+  }
+  const bool useCore =
+      !(desc.flags & CreateContextFlags::REQUIRE_COMPAT_PROFILE);
+  if (useCore) {
+    attribs.insert(attribs.end(), {
+                                      LOCAL_GLX_CONTEXT_MAJOR_VERSION_ARB,
+                                      3,
+                                      LOCAL_GLX_CONTEXT_MINOR_VERSION_ARB,
+                                      2,
+                                      LOCAL_GLX_CONTEXT_PROFILE_MASK_ARB,
+                                      LOCAL_GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
+                                  });
+  }
+
+  if (glx.HasRobustness()) {
+    auto withRobustness = attribs;
+    withRobustness.insert(withRobustness.end(),
+                          {
+                              LOCAL_GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
+                              LOCAL_GLX_LOSE_CONTEXT_ON_RESET_ARB,
+                          });
+
+    {
+      auto withRBAB = withRobustness;
+      withRBAB.insert(withRBAB.end(),
+                      {
+                          LOCAL_GLX_CONTEXT_FLAGS_ARB,
+                          LOCAL_GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB,
+                      });
+      if (!glContext) {
+        glContext = CreateWithAttribs(withRBAB);
+        if (!glContext) {
+          NS_WARNING("Failed to create+init GLContextGLX with RBAB");
+        }
+      }
+    }
+
+    if (!glContext) {
+      glContext = CreateWithAttribs(withRobustness);
+      if (!glContext) {
+        NS_WARNING("Failed to create+init GLContextGLX with Robustness");
+      }
+    }
+  }
+
+  if (!glContext) {
+    glContext = CreateWithAttribs(attribs);
+    if (!glContext) {
+      NS_WARNING("Failed to create+init GLContextGLX with required attribs");
+    }
+  }
+
+  return glContext.forget();
+}
+
+GLContextGLX::~GLContextGLX() {
+  MarkDestroyed();
+
+  // Wrapped context should not destroy glxContext/Surface
+  if (!mOwnsContext) {
+    return;
+  }
+
+  // see bug 659842 comment 76
+  bool success = mGLX->fMakeCurrent(*mDisplay, X11None, nullptr);
+  if (!success) {
+    NS_WARNING(
+        "glXMakeCurrent failed to release GL context before we call "
+        "glXDestroyContext!");
+  }
+
+  mGLX->fDestroyContext(*mDisplay, mContext);
+
+  // If we own the enclosed X pixmap, then free it after we free the enclosing
+  // GLX pixmap.
+  if (mOwnedPixmap) {
+    mGLX->fDestroyPixmap(*mDisplay, mDrawable);
+    XFreePixmap(*mDisplay, mOwnedPixmap);
+  }
+}
+
+bool GLContextGLX::Init() {
+  if (!GLContext::Init()) {
+    return false;
+  }
+
+  // EXT_framebuffer_object is not supported on Core contexts
+  // so we'll also check for ARB_framebuffer_object
+  if (!IsExtensionSupported(EXT_framebuffer_object) &&
+      !IsSupported(GLFeature::framebuffer_object))
+    return false;
+
+  return true;
+}
+
+bool GLContextGLX::MakeCurrentImpl() const {
+  if (mGLX->IsMesa()) {
+    // Read into the event queue to ensure that Mesa receives a
+    // DRI2InvalidateBuffers event before drawing. See bug 1280653.
+    Unused << XPending(*mDisplay);
+  }
+
+  const bool succeeded = mGLX->fMakeCurrent(*mDisplay, mDrawable, mContext);
+  if (!succeeded) {
+    NS_WARNING("Failed to make GL context current!");
+  }
+
+  if (!IsOffscreen() && mGLX->SupportsSwapControl()) {
+    // Many GLX implementations default to blocking until the next
+    // VBlank when calling glXSwapBuffers. We want to run unthrottled
+    // in ASAP mode. See bug 1280744.
+    const bool swapInterval = gfxVars::SwapIntervalGLX();
+    const bool isASAP = (StaticPrefs::layout_frame_rate() == 0);
+    const int interval = (swapInterval && !isASAP) ? 1 : 0;
+    mGLX->fSwapInterval(*mDisplay, mDrawable, interval);
+  }
+  return succeeded;
+}
+
+bool GLContextGLX::IsCurrentImpl() const {
+  return mGLX->fGetCurrentContext() == mContext;
+}
+
+Maybe<SymbolLoader> GLContextGLX::GetSymbolLoader() const {
+  const auto pfn = sGLXLibrary.GetGetProcAddress();
+  return Some(SymbolLoader(pfn));
+}
+
+bool GLContextGLX::IsDoubleBuffered() const { return mDoubleBuffered; }
+
+bool GLContextGLX::SwapBuffers() {
+  if (!mDoubleBuffered) return false;
+  mGLX->fSwapBuffers(*mDisplay, mDrawable);
+  return true;
+}
+
+GLint GLContextGLX::GetBufferAge() const {
+  if (!sGLXLibrary.SupportsBufferAge()) {
+    return 0;
+  }
+
+  GLuint result = 0;
+  mGLX->fQueryDrawable(*mDisplay, mDrawable, LOCAL_GLX_BACK_BUFFER_AGE_EXT,
+                       &result);
+  if (result > INT32_MAX) {
+    // If the result can't fit, just assume the buffer cannot be reused.
+    return 0;
+  }
+  return result;
+}
+
+void GLContextGLX::GetWSIInfo(nsCString* const out) const {
+  int screen = DefaultScreen(mDisplay->get());
+
+  int majorVersion, minorVersion;
+  sGLXLibrary.fQueryVersion(*mDisplay, &majorVersion, &minorVersion);
+
+  out->Append(nsPrintfCString("GLX %u.%u", majorVersion, minorVersion));
+
+  out->AppendLiteral("\nGLX_VENDOR(client): ");
+  out->Append(sGLXLibrary.fGetClientString(*mDisplay, LOCAL_GLX_VENDOR));
+
+  out->AppendLiteral("\nGLX_VENDOR(server): ");
+  out->Append(
+      sGLXLibrary.fQueryServerString(*mDisplay, screen, LOCAL_GLX_VENDOR));
+
+  out->AppendLiteral("\nExtensions: ");
+  out->Append(sGLXLibrary.fQueryExtensionsString(*mDisplay, screen));
+}
+
+bool GLContextGLX::OverrideDrawable(GLXDrawable drawable) {
+  return mGLX->fMakeCurrent(*mDisplay, drawable, mContext);
+}
+
+bool GLContextGLX::RestoreDrawable() {
+  return mGLX->fMakeCurrent(*mDisplay, mDrawable, mContext);
+}
+
+GLContextGLX::GLContextGLX(const GLContextDesc& desc,
+                           std::shared_ptr<XlibDisplay> aDisplay,
+                           GLXDrawable aDrawable, GLXContext aContext,
+                           bool aDoubleBuffered, Drawable aOwnedPixmap)
+    : GLContext(desc, nullptr),
+      mContext(aContext),
+      mDisplay(aDisplay),
+      mDrawable(aDrawable),
+      mOwnedPixmap(aOwnedPixmap),
+      mDoubleBuffered(aDoubleBuffered),
+      mGLX(&sGLXLibrary) {}
+
+static bool AreCompatibleVisuals(Visual* one, Visual* two) {
+  if (one->c_class != two->c_class) {
+    return false;
+  }
+
+  if (one->red_mask != two->red_mask || one->green_mask != two->green_mask ||
+      one->blue_mask != two->blue_mask) {
+    return false;
+  }
+
+  if (one->bits_per_rgb != two->bits_per_rgb) {
+    return false;
+  }
+
+  return true;
+}
+
+already_AddRefed<GLContext> CreateForWidget(Display* aXDisplay, Window aXWindow,
+                                            bool aHardwareWebRender,
+                                            bool aForceAccelerated) {
+  if (!sGLXLibrary.EnsureInitialized(aXDisplay)) {
+    return nullptr;
+  }
+
+  // Currently, we take whatever Visual the window already has, and
+  // try to create an fbconfig for that visual.  This isn't
+  // necessarily what we want in the long run; an fbconfig may not
+  // be available for the existing visual, or if it is, the GL
+  // performance might be suboptimal.  But using the existing visual
+  // is a relatively safe intermediate step.
+
+  if (!aXDisplay) {
+    NS_ERROR("X Display required for GLX Context provider");
+    return nullptr;
+  }
+
+  if (!aXWindow) {
+    NS_ERROR("X window required for GLX Context provider");
+    return nullptr;
+  }
+
+  int xscreen = DefaultScreen(aXDisplay);
+
+  ScopedXFree<GLXFBConfig> cfgs;
+  GLXFBConfig config;
+  int visid;
+  if (!GLContextGLX::FindFBConfigForWindow(aXDisplay, xscreen, aXWindow, &cfgs,
+                                           &config, &visid,
+                                           aHardwareWebRender)) {
+    return nullptr;
+  }
+
+  CreateContextFlags flags;
+  if (aHardwareWebRender) {
+    flags = CreateContextFlags::NONE;  // WR needs GL3.2+
+  } else {
+    flags = CreateContextFlags::REQUIRE_COMPAT_PROFILE;
+  }
+  return GLContextGLX::CreateGLContext(
+      {{flags}, false}, XlibDisplay::Borrow(aXDisplay), aXWindow, config);
+}
+
+already_AddRefed<GLContext> GLContextProviderGLX::CreateForCompositorWidget(
+    CompositorWidget* aCompositorWidget, bool aHardwareWebRender,
+    bool aForceAccelerated) {
+  if (!aCompositorWidget) {
+    MOZ_ASSERT(false);
+    return nullptr;
+  }
+  GtkCompositorWidget* compWidget = aCompositorWidget->AsGTK();
+  MOZ_ASSERT(compWidget);
+
+  return CreateForWidget(DefaultXDisplay(), compWidget->XWindow(),
+                         aHardwareWebRender, aForceAccelerated);
+}
+
+static bool ChooseConfig(GLXLibrary* glx, Display* display, int screen,
+                         ScopedXFree<GLXFBConfig>* const out_scopedConfigArr,
+                         GLXFBConfig* const out_config, int* const out_visid) {
+  ScopedXFree<GLXFBConfig>& scopedConfigArr = *out_scopedConfigArr;
+
+  const int attribs[] = {
+      LOCAL_GLX_RENDER_TYPE,
+      LOCAL_GLX_RGBA_BIT,
+      LOCAL_GLX_DRAWABLE_TYPE,
+      LOCAL_GLX_PIXMAP_BIT,
+      LOCAL_GLX_X_RENDERABLE,
+      X11True,
+      LOCAL_GLX_RED_SIZE,
+      8,
+      LOCAL_GLX_GREEN_SIZE,
+      8,
+      LOCAL_GLX_BLUE_SIZE,
+      8,
+      LOCAL_GLX_ALPHA_SIZE,
+      8,
+      LOCAL_GLX_DEPTH_SIZE,
+      0,
+      LOCAL_GLX_STENCIL_SIZE,
+      0,
+      0,
+  };
+
+  int numConfigs = 0;
+  scopedConfigArr = glx->fChooseFBConfig(display, screen, attribs, &numConfigs);
+  if (!scopedConfigArr || !numConfigs) return false;
+
+  // Issues with glxChooseFBConfig selection and sorting:
+  // * ALPHA_SIZE is sorted as 'largest total RGBA bits first'. If we don't
+  // request
+  //   alpha bits, we'll probably get RGBA anyways, since 32 is more than 24.
+  // * DEPTH_SIZE is sorted largest first, including for `0` inputs.
+  // * STENCIL_SIZE is smallest first, but it might return `8` even though we
+  // ask for
+  //   `0`.
+
+  // For now, we don't care about these. We *will* care when we do XPixmap
+  // sharing.
+
+  for (int i = 0; i < numConfigs; ++i) {
+    GLXFBConfig curConfig = scopedConfigArr[i];
+
+    int visid;
+    if (glx->fGetFBConfigAttrib(display, curConfig, LOCAL_GLX_VISUAL_ID,
+                                &visid) != Success) {
+      continue;
+    }
+
+    if (!visid) continue;
+
+    *out_config = curConfig;
+    *out_visid = visid;
+    return true;
+  }
+
+  return false;
+}
+
+bool GLContextGLX::FindVisual(Display* display, int screen,
+                              int* const out_visualId) {
+  if (!sGLXLibrary.EnsureInitialized(display)) {
+    return false;
+  }
+
+  XVisualInfo visualTemplate;
+  visualTemplate.screen = screen;
+
+  // Get all visuals of screen
+
+  int visualsLen = 0;
+  XVisualInfo* xVisuals =
+      XGetVisualInfo(display, VisualScreenMask, &visualTemplate, &visualsLen);
+  if (!xVisuals) {
+    return false;
+  }
+  const Range<XVisualInfo> visualInfos(xVisuals, visualsLen);
+  auto cleanupVisuals = MakeScopeExit([&] { XFree(xVisuals); });
+
+  // Get default visual info
+
+  Visual* defaultVisual = DefaultVisual(display, screen);
+  const auto defaultVisualInfo = [&]() -> const XVisualInfo* {
+    for (const auto& cur : visualInfos) {
+      if (cur.visual == defaultVisual) {
+        return &cur;
+      }
+    }
+    return nullptr;
+  }();
+  if (!defaultVisualInfo) {
+    MOZ_ASSERT(false);
+    return false;
+  }
+
+  const int bpp = 32;
+
+  for (auto& cur : visualInfos) {
+    const auto fnConfigMatches = [&](const int pname, const int expected) {
+      int actual;
+      if (sGLXLibrary.fGetConfig(display, &cur, pname, &actual)) {
+        return false;
+      }
+      return actual == expected;
+    };
+
+    // Check if visual is compatible.
+    if (cur.depth != bpp || cur.c_class != defaultVisualInfo->c_class) {
+      continue;
+    }
+
+    // Check if visual is compatible to GL requests.
+    if (fnConfigMatches(LOCAL_GLX_USE_GL, 1) &&
+        fnConfigMatches(LOCAL_GLX_DOUBLEBUFFER, 1) &&
+        fnConfigMatches(LOCAL_GLX_RED_SIZE, 8) &&
+        fnConfigMatches(LOCAL_GLX_GREEN_SIZE, 8) &&
+        fnConfigMatches(LOCAL_GLX_BLUE_SIZE, 8) &&
+        fnConfigMatches(LOCAL_GLX_ALPHA_SIZE, 8)) {
+      *out_visualId = cur.visualid;
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool GLContextGLX::FindFBConfigForWindow(
+    Display* display, int screen, Window window,
+    ScopedXFree<GLXFBConfig>* const out_scopedConfigArr,
+    GLXFBConfig* const out_config, int* const out_visid, bool aWebRender) {
+  // XXX the visual ID is almost certainly the LOCAL_GLX_FBCONFIG_ID, so
+  // we could probably do this first and replace the glXGetFBConfigs
+  // with glXChooseConfigs.  Docs are sparklingly clear as always.
+  XWindowAttributes windowAttrs;
+  if (!XGetWindowAttributes(display, window, &windowAttrs)) {
+    NS_WARNING("[GLX] XGetWindowAttributes() failed");
+    return false;
+  }
+
+  ScopedXFree<GLXFBConfig>& cfgs = *out_scopedConfigArr;
+  int numConfigs;
+  const int webrenderAttribs[] = {LOCAL_GLX_ALPHA_SIZE,
+                                  windowAttrs.depth == 32 ? 8 : 0,
+                                  LOCAL_GLX_DOUBLEBUFFER, X11True, 0};
+
+  if (aWebRender) {
+    cfgs = sGLXLibrary.fChooseFBConfig(display, screen, webrenderAttribs,
+                                       &numConfigs);
+  } else {
+    cfgs = sGLXLibrary.fGetFBConfigs(display, screen, &numConfigs);
+  }
+
+  if (!cfgs) {
+    NS_WARNING("[GLX] glXGetFBConfigs() failed");
+    return false;
+  }
+  NS_ASSERTION(numConfigs > 0, "No FBConfigs found!");
+
+  const VisualID windowVisualID = XVisualIDFromVisual(windowAttrs.visual);
+#ifdef DEBUG
+  printf("[GLX] window %lx has VisualID 0x%lx\n", window, windowVisualID);
+#endif
+
+  for (int i = 0; i < numConfigs; i++) {
+    int visid = X11None;
+    sGLXLibrary.fGetFBConfigAttrib(display, cfgs[i], LOCAL_GLX_VISUAL_ID,
+                                   &visid);
+    if (visid) {
+      // WebRender compatible GLX visual is configured
+      // at nsWindow::Create() by GLContextGLX::FindVisual(),
+      // just reuse it here.
+      if (windowVisualID == static_cast<VisualID>(visid)) {
+        *out_config = cfgs[i];
+        *out_visid = visid;
+        return true;
+      }
+    }
+  }
+
+  // We don't have a frame buffer visual which matches the GLX visual
+  // from GLContextGLX::FindVisual(). Let's try to find a near one and hope
+  // we're not on NVIDIA (Bug 1478454) as it causes X11 BadMatch error there.
+  for (int i = 0; i < numConfigs; i++) {
+    int visid = X11None;
+    sGLXLibrary.fGetFBConfigAttrib(display, cfgs[i], LOCAL_GLX_VISUAL_ID,
+                                   &visid);
+    if (visid) {
+      int depth;
+      Visual* visual;
+      FindVisualAndDepth(display, visid, &visual, &depth);
+      if (depth == windowAttrs.depth &&
+          AreCompatibleVisuals(windowAttrs.visual, visual)) {
+        *out_config = cfgs[i];
+        *out_visid = visid;
+        return true;
+      }
+    }
+  }
+
+  NS_WARNING("[GLX] Couldn't find a FBConfig matching window visual");
+  return false;
+}
+
+static already_AddRefed<GLContextGLX> CreateOffscreenPixmapContext(
+    const GLContextCreateDesc& desc, const IntSize& size,
+    nsACString* const out_failureId) {
+  GLXLibrary* glx = &sGLXLibrary;
+  auto display = glx->GetDisplay();
+
+  if (!display || !glx->EnsureInitialized(*display)) return nullptr;
+
+  int screen = DefaultScreen(display->get());
+
+  ScopedXFree<GLXFBConfig> scopedConfigArr;
+  GLXFBConfig config;
+  int visid;
+  if (!ChooseConfig(glx, *display, screen, &scopedConfigArr, &config, &visid)) {
+    NS_WARNING("Failed to find a compatible config.");
+    return nullptr;
+  }
+
+  Visual* visual;
+  int depth;
+  FindVisualAndDepth(*display, visid, &visual, &depth);
+
+  gfx::IntSize dummySize(16, 16);
+  const auto drawable =
+      XCreatePixmap(*display, DefaultRootWindow(display->get()),
+                    dummySize.width, dummySize.height, depth);
+  if (!drawable) {
+    return nullptr;
+  }
+
+  // Handle slightly different signature between glXCreatePixmap and
+  // its pre-GLX-1.3 extension equivalent (though given the ABI, we
+  // might not need to).
+  const auto pixmap = glx->fCreatePixmap(*display, config, drawable, nullptr);
+  if (pixmap == 0) {
+    XFreePixmap(*display, drawable);
+    return nullptr;
+  }
+
+  auto fullDesc = GLContextDesc{desc};
+  fullDesc.isOffscreen = true;
+  return GLContextGLX::CreateGLContext(fullDesc, display, pixmap, config,
+                                       drawable);
+}
+
+/*static*/
+already_AddRefed<GLContext> GLContextProviderGLX::CreateHeadless(
+    const GLContextCreateDesc& desc, nsACString* const out_failureId) {
+  IntSize dummySize = IntSize(16, 16);
+  return CreateOffscreenPixmapContext(desc, dummySize, out_failureId);
+}
+
+/*static*/
+GLContext* GLContextProviderGLX::GetGlobalContext() {
+  // Context sharing not supported.
+  return nullptr;
+}
+
+/*static*/
+void GLContextProviderGLX::Shutdown() {}
+
+}  // namespace mozilla::gl
diff --git a/gfx/gl/GLContextProviderImpl.h b/gfx/gl/GLContextProviderImpl.h
new file mode 100644
index 0000000000..e7aaeeaa62
--- /dev/null
+++ b/gfx/gl/GLContextProviderImpl.h
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef IN_GL_CONTEXT_PROVIDER_H
+#  error GLContextProviderImpl.h must only be included from GLContextProvider.h
+#endif
+
+#ifndef GL_CONTEXT_PROVIDER_NAME
+#  error GL_CONTEXT_PROVIDER_NAME not defined
+#endif
+#if defined(MOZ_WIDGET_ANDROID)
+#  include "GLTypes.h"  // for EGLSurface and EGLConfig
+#endif                  // defined(MOZ_WIDGET_ANDROID)
+
+class GL_CONTEXT_PROVIDER_NAME {
+ public:
+  /**
+   * Create a context that renders to the surface of the widget represented by
+   * the compositor widget that is passed in. The context is always created
+   * with an RGB pixel format, with no alpha, depth or stencil.
+   * If any of those features are needed, either use a framebuffer, or
+   * use CreateOffscreen.
+   *
+   * This context will attempt to share resources with all other window
+   * contexts.  As such, it's critical that resources allocated that are not
+   * needed by other contexts be deleted before the context is destroyed.
+   *
+   * The GetSharedContext() method will return non-null if sharing
+   * was successful.
+   *
+   * Note: a context created for a widget /must not/ hold a strong
+   * reference to the widget; otherwise a cycle can be created through
+   * a GL layer manager.
+   *
+   * @param aCompositorWidget Widget whose surface to create a context for
+   * @param aForceAccelerated true if only accelerated contexts are allowed
+   *
+   * @return Context to use for the window
+   */
+  static already_AddRefed<GLContext> CreateForCompositorWidget(
+      mozilla::widget::CompositorWidget* aCompositorWidget,
+      bool aHardwareWebRender, bool aForceAccelerated);
+
+  /// Just create a context. We'll add offscreen stuff ourselves.
+  static already_AddRefed<GLContext> CreateHeadless(
+      const GLContextCreateDesc&, nsACString* const out_failureId);
+
+  /**
+   * Get a pointer to the global context, creating it if it doesn't exist.
+   */
+  static GLContext* GetGlobalContext();
+
+  /**
+   * Free any resources held by this Context Provider.
+   */
+  static void Shutdown();
+};
diff --git a/gfx/gl/GLContextProviderLinux.cpp b/gfx/gl/GLContextProviderLinux.cpp
new file mode 100644
index 0000000000..7205449387
--- /dev/null
+++ b/gfx/gl/GLContextProviderLinux.cpp
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "prenv.h"
+
+#include "GLContextProvider.h"
+#include "mozilla/gfx/gfxVars.h"
+
+namespace mozilla::gl {
+
+using namespace mozilla::gfx;
+using namespace mozilla::widget;
+
+#ifdef MOZ_X11
+static class GLContextProviderGLX sGLContextProviderGLX;
+#endif
+static class GLContextProviderEGL sGLContextProviderEGL;
+
+already_AddRefed<GLContext> GLContextProviderLinux::CreateForCompositorWidget(
+    CompositorWidget* aCompositorWidget, bool aHardwareWebRender,
+    bool aForceAccelerated) {
+  if (gfxVars::UseEGL()) {
+    return sGLContextProviderEGL.CreateForCompositorWidget(
+        aCompositorWidget, aHardwareWebRender, aForceAccelerated);
+#ifdef MOZ_X11
+  } else {
+    return sGLContextProviderGLX.CreateForCompositorWidget(
+        aCompositorWidget, aHardwareWebRender, aForceAccelerated);
+#endif
+  }
+}
+
+/*static*/
+already_AddRefed<GLContext> GLContextProviderLinux::CreateHeadless(
+    const GLContextCreateDesc& desc, nsACString* const out_failureId) {
+  if (gfxVars::UseEGL()) {
+    return sGLContextProviderEGL.CreateHeadless(desc, out_failureId);
+#ifdef MOZ_X11
+  } else {
+    return sGLContextProviderGLX.CreateHeadless(desc, out_failureId);
+#endif
+  }
+}
+
+/*static*/
+GLContext* GLContextProviderLinux::GetGlobalContext() {
+  if (gfxVars::UseEGL()) {
+    return sGLContextProviderEGL.GetGlobalContext();
+#ifdef MOZ_X11
+  } else {
+    return sGLContextProviderGLX.GetGlobalContext();
+#endif
+  }
+}
+
+/*static*/
+void GLContextProviderLinux::Shutdown() {
+  if (gfxVars::UseEGL()) {
+    sGLContextProviderEGL.Shutdown();
+#ifdef MOZ_X11
+  } else {
+    sGLContextProviderGLX.Shutdown();
+#endif
+  }
+}
+
+}  // namespace mozilla::gl
diff --git a/gfx/gl/GLContextProviderNull.cpp b/gfx/gl/GLContextProviderNull.cpp
new file mode 100644
index 0000000000..558abed19f
--- /dev/null
+++ b/gfx/gl/GLContextProviderNull.cpp
@@ -0,0 +1,30 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLContextProvider.h"
+
+namespace mozilla {
+namespace gl {
+
+using namespace mozilla::widget;
+
+already_AddRefed<GLContext> GLContextProviderNull::CreateForCompositorWidget(
+    CompositorWidget* aCompositorWidget, bool aHardwareWebRender,
+    bool aForceAccelerated) {
+  return nullptr;
+}
+
+already_AddRefed<GLContext> GLContextProviderNull::CreateHeadless(
+    const GLContextCreateDesc&, nsACString* const out_failureId) {
+  *out_failureId = "FEATURE_FAILURE_NULL"_ns;
+  return nullptr;
+}
+
+GLContext* GLContextProviderNull::GetGlobalContext() { return nullptr; }
+
+void GLContextProviderNull::Shutdown() {}
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/GLContextProviderWGL.cpp b/gfx/gl/GLContextProviderWGL.cpp
new file mode 100644
index 0000000000..2720cab14e
--- /dev/null
+++ b/gfx/gl/GLContextProviderWGL.cpp
@@ -0,0 +1,518 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLContextProvider.h"
+#include "GLContextWGL.h"
+#include "GLLibraryLoader.h"
+#include "nsDebug.h"
+#include "nsIWidget.h"
+#include "gfxPlatform.h"
+#include "gfxWindowsSurface.h"
+
+#include "gfxCrashReporterUtils.h"
+
+#include "prenv.h"
+
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/ScopeExit.h"
+#include "mozilla/StaticPrefs_gl.h"
+#include "mozilla/StaticPtr.h"
+#include "mozilla/layers/CompositorOptions.h"
+#include "mozilla/widget/CompositorWidget.h"
+#include "mozilla/widget/WinCompositorWidget.h"
+
+namespace mozilla {
+namespace gl {
+
+using namespace mozilla::gfx;
+using namespace mozilla::widget;
+
+WGLLibrary sWGLLib;
+
+/*
+ScopedWindow::~ScopedWindow()
+{
+    if (mDC) {
+        MOZ_ALWAYS_TRUE( ReleaseDC(mDC) );
+    }
+    if (mWindow) {
+        MOZ_ALWAYS_TRUE( DestroyWindow(mWindow) );
+    }
+}
+*/
+static HWND CreateDummyWindow() {
+  WNDCLASSW wc{};
+  if (!GetClassInfoW(GetModuleHandle(nullptr), L"GLContextWGLClass", &wc)) {
+    wc = {};
+    wc.style = CS_OWNDC;
+    wc.hInstance = GetModuleHandle(nullptr);
+    wc.lpfnWndProc = DefWindowProc;
+    wc.lpszClassName = L"GLContextWGLClass";
+    if (!RegisterClassW(&wc)) {
+      NS_WARNING("Failed to register GLContextWGLClass?!");
+      // er. failed to register our class?
+      return nullptr;
+    }
+  }
+
+  return CreateWindowW(L"GLContextWGLClass", L"GLContextWGL", 0, 0, 0, 1, 1,
+                       nullptr, nullptr, GetModuleHandle(nullptr), nullptr);
+}
+
+static inline bool HasExtension(const char* aExtensions,
+                                const char* aRequiredExtension) {
+  return GLContext::ListHasExtension(
+      reinterpret_cast<const GLubyte*>(aExtensions), aRequiredExtension);
+}
+
+SymbolLoader WGLLibrary::GetSymbolLoader() const {
+  auto ret = SymbolLoader(*mOGLLibrary);
+  ret.mPfn = SymbolLoader::GetProcAddressT(mSymbols.fGetProcAddress);
+  return ret;
+}
+
+bool WGLLibrary::EnsureInitialized() {
+  if (mInitialized) return true;
+
+  mozilla::ScopedGfxFeatureReporter reporter("WGL");
+
+  std::wstring libGLFilename = L"Opengl32.dll";
+  // SU_SPIES_DIRECTORY is for AMD CodeXL/gDEBugger
+  if (_wgetenv(L"SU_SPIES_DIRECTORY")) {
+    libGLFilename =
+        std::wstring(_wgetenv(L"SU_SPIES_DIRECTORY")) + L"\\opengl32.dll";
+  }
+
+  if (!mOGLLibrary) {
+    mOGLLibrary = LoadLibraryWithFlags(libGLFilename.c_str());
+    if (!mOGLLibrary) {
+      NS_WARNING("Couldn't load OpenGL library.");
+      return false;
+    }
+  }
+
+#define SYMBOL(X) {(PRFuncPtr*)&mSymbols.f##X, {{"wgl" #X}}}
+#define END_OF_SYMBOLS \
+  {                    \
+    nullptr, {}        \
+  }
+
+  {
+    const auto loader = SymbolLoader(*mOGLLibrary);
+    const SymLoadStruct earlySymbols[] = {SYMBOL(CreateContext),
+                                          SYMBOL(MakeCurrent),
+                                          SYMBOL(GetProcAddress),
+                                          SYMBOL(DeleteContext),
+                                          SYMBOL(GetCurrentContext),
+                                          SYMBOL(GetCurrentDC),
+                                          END_OF_SYMBOLS};
+
+    if (!loader.LoadSymbols(earlySymbols)) {
+      NS_WARNING(
+          "Couldn't find required entry points in OpenGL DLL (early init)");
+      return false;
+    }
+  }
+
+  mDummyWindow = CreateDummyWindow();
+  MOZ_ASSERT(mDummyWindow);
+  if (!mDummyWindow) return false;
+  auto cleanup = MakeScopeExit([&]() { Reset(); });
+
+  mRootDc = GetDC(mDummyWindow);
+  MOZ_ASSERT(mRootDc);
+  if (!mRootDc) return false;
+
+  // --
+
+  {
+    PIXELFORMATDESCRIPTOR pfd{};
+    pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
+    pfd.nVersion = 1;
+    pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
+    // pfd.iPixelType = PFD_TYPE_RGBA;
+    // pfd.cColorBits = 24;
+    // pfd.cRedBits = 8;
+    // pfd.cGreenBits = 8;
+    // pfd.cBlueBits = 8;
+    // pfd.cAlphaBits = 8;
+    pfd.iLayerType = PFD_MAIN_PLANE;
+
+    const auto pixelFormat = ChoosePixelFormat(mRootDc, &pfd);
+    MOZ_ASSERT(pixelFormat);
+    if (!pixelFormat) return false;
+    const bool setPixelFormatOk = SetPixelFormat(mRootDc, pixelFormat, nullptr);
+    MOZ_ASSERT(setPixelFormatOk);
+    if (!setPixelFormatOk) return false;
+  }
+
+  // --
+
+  // create rendering context
+  mDummyGlrc = mSymbols.fCreateContext(mRootDc);
+  if (!mDummyGlrc) return false;
+
+  const auto curCtx = mSymbols.fGetCurrentContext();
+  const auto curDC = mSymbols.fGetCurrentDC();
+
+  if (!mSymbols.fMakeCurrent(mRootDc, mDummyGlrc)) {
+    NS_WARNING("wglMakeCurrent failed");
+    return false;
+  }
+  const auto resetContext =
+      MakeScopeExit([&]() { mSymbols.fMakeCurrent(curDC, curCtx); });
+
+  const auto loader = GetSymbolLoader();
+
+  // Now we can grab all the other symbols that we couldn't without having
+  // a context current.
+  // clang-format off
+    const SymLoadStruct reqExtSymbols[] = {
+        { (PRFuncPtr*)&mSymbols.fCreatePbuffer, {{ "wglCreatePbufferARB", "wglCreatePbufferEXT" }} },
+        { (PRFuncPtr*)&mSymbols.fDestroyPbuffer, {{ "wglDestroyPbufferARB", "wglDestroyPbufferEXT" }} },
+        { (PRFuncPtr*)&mSymbols.fGetPbufferDC, {{ "wglGetPbufferDCARB", "wglGetPbufferDCEXT" }} },
+        { (PRFuncPtr*)&mSymbols.fReleasePbufferDC, {{ "wglReleasePbufferDCARB", "wglReleasePbufferDCEXT" }} },
+    //    { (PRFuncPtr*)&mSymbols.fBindTexImage, {{ "wglBindTexImageARB", "wglBindTexImageEXT" }} },
+    //    { (PRFuncPtr*)&mSymbols.fReleaseTexImage, {{ "wglReleaseTexImageARB", "wglReleaseTexImageEXT" }} },
+        { (PRFuncPtr*)&mSymbols.fChoosePixelFormat, {{ "wglChoosePixelFormatARB", "wglChoosePixelFormatEXT" }} },
+    //    { (PRFuncPtr*)&mSymbols.fGetPixelFormatAttribiv, {{ "wglGetPixelFormatAttribivARB", "wglGetPixelFormatAttribivEXT" }} },
+        SYMBOL(GetExtensionsStringARB),
+        END_OF_SYMBOLS
+    };
+  // clang-format on
+  if (!loader.LoadSymbols(reqExtSymbols)) {
+    NS_WARNING("reqExtSymbols missing");
+    return false;
+  }
+
+  // --
+
+  const auto extString = mSymbols.fGetExtensionsStringARB(mRootDc);
+  MOZ_ASSERT(extString);
+
+  // --
+
+  if (HasExtension(extString, "WGL_ARB_create_context")) {
+    const SymLoadStruct createContextSymbols[] = {
+        SYMBOL(CreateContextAttribsARB), END_OF_SYMBOLS};
+    if (loader.LoadSymbols(createContextSymbols)) {
+      if (HasExtension(extString, "WGL_ARB_create_context_robustness")) {
+        mHasRobustness = true;
+      }
+    } else {
+      NS_ERROR(
+          "WGL_ARB_create_context announced without supplying its functions.");
+      ClearSymbols(createContextSymbols);
+    }
+  }
+
+  // --
+
+  bool hasDXInterop2 = HasExtension(extString, "WGL_NV_DX_interop2");
+  if (gfxVars::DXInterop2Blocked() &&
+      !StaticPrefs::gl_ignore_dx_interop2_blacklist()) {
+    hasDXInterop2 = false;
+  }
+
+  if (hasDXInterop2) {
+    const SymLoadStruct dxInteropSymbols[] = {
+        SYMBOL(DXSetResourceShareHandleNV),
+        SYMBOL(DXOpenDeviceNV),
+        SYMBOL(DXCloseDeviceNV),
+        SYMBOL(DXRegisterObjectNV),
+        SYMBOL(DXUnregisterObjectNV),
+        SYMBOL(DXObjectAccessNV),
+        SYMBOL(DXLockObjectsNV),
+        SYMBOL(DXUnlockObjectsNV),
+        END_OF_SYMBOLS};
+    if (!loader.LoadSymbols(dxInteropSymbols)) {
+      NS_ERROR(
+          "WGL_NV_DX_interop2 announceed without supplying its functions.");
+      ClearSymbols(dxInteropSymbols);
+    }
+  }
+
+  // --
+
+  cleanup.release();
+
+  mInitialized = true;
+
+  reporter.SetSuccessful();
+  return true;
+}
+
+#undef SYMBOL
+#undef END_OF_SYMBOLS
+
+void WGLLibrary::Reset() {
+  if (mDummyGlrc) {
+    (void)mSymbols.fDeleteContext(mDummyGlrc);
+    mDummyGlrc = nullptr;
+  }
+  if (mRootDc) {
+    (void)ReleaseDC(mDummyWindow, mRootDc);
+    mRootDc = nullptr;
+  }
+  if (mDummyWindow) {
+    (void)DestroyWindow(mDummyWindow);
+    mDummyWindow = nullptr;
+  }
+}
+
+GLContextWGL::GLContextWGL(const GLContextDesc& desc, HDC aDC, HGLRC aContext,
+                           HWND aWindow)
+    : GLContext(desc, nullptr, false),
+      mDC(aDC),
+      mContext(aContext),
+      mWnd(aWindow),
+      mPBuffer(nullptr),
+      mPixelFormat(0) {}
+
+GLContextWGL::GLContextWGL(const GLContextDesc& desc, HANDLE aPbuffer, HDC aDC,
+                           HGLRC aContext, int aPixelFormat)
+    : GLContext(desc, nullptr, false),
+      mDC(aDC),
+      mContext(aContext),
+      mWnd(nullptr),
+      mPBuffer(aPbuffer),
+      mPixelFormat(aPixelFormat) {}
+
+GLContextWGL::~GLContextWGL() {
+  MarkDestroyed();
+
+  (void)sWGLLib.mSymbols.fDeleteContext(mContext);
+
+  if (mPBuffer) {
+    (void)sWGLLib.mSymbols.fReleasePbufferDC(mPBuffer, mDC);
+    (void)sWGLLib.mSymbols.fDestroyPbuffer(mPBuffer);
+  }
+  if (mWnd) {
+    (void)ReleaseDC(mWnd, mDC);
+    DestroyWindow(mWnd);
+  }
+}
+
+bool GLContextWGL::MakeCurrentImpl() const {
+  const bool succeeded = sWGLLib.mSymbols.fMakeCurrent(mDC, mContext);
+  NS_ASSERTION(succeeded, "Failed to make GL context current!");
+  return succeeded;
+}
+
+bool GLContextWGL::IsCurrentImpl() const {
+  return sWGLLib.mSymbols.fGetCurrentContext() == mContext;
+}
+
+bool GLContextWGL::SwapBuffers() {
+  if (!mIsDoubleBuffered) return false;
+  return ::SwapBuffers(mDC);
+}
+
+void GLContextWGL::GetWSIInfo(nsCString* const out) const {
+  out->AppendLiteral("wglGetExtensionsString: ");
+  out->Append(sWGLLib.mSymbols.fGetExtensionsStringARB(mDC));
+}
+
+HGLRC
+WGLLibrary::CreateContextWithFallback(const HDC dc,
+                                      const bool tryRobustBuffers) const {
+  if (mHasRobustness) {
+    if (tryRobustBuffers) {
+      const int attribs[] = {LOCAL_WGL_CONTEXT_FLAGS_ARB,
+                             LOCAL_WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB,
+                             LOCAL_WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
+                             LOCAL_WGL_LOSE_CONTEXT_ON_RESET_ARB, 0};
+      const auto context =
+          mSymbols.fCreateContextAttribsARB(dc, nullptr, attribs);
+      if (context) return context;
+    }
+
+    const int attribs[] = {LOCAL_WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
+                           LOCAL_WGL_LOSE_CONTEXT_ON_RESET_ARB, 0};
+    const auto context =
+        mSymbols.fCreateContextAttribsARB(dc, nullptr, attribs);
+    if (context) return context;
+  }
+  if (mSymbols.fCreateContextAttribsARB) {
+    const auto context =
+        mSymbols.fCreateContextAttribsARB(dc, nullptr, nullptr);
+    if (context) return context;
+  }
+  return mSymbols.fCreateContext(dc);
+}
+
+static RefPtr<GLContext> CreateForWidget(const HWND window,
+                                         const bool isWebRender,
+                                         const bool requireAccelerated) {
+  auto& wgl = sWGLLib;
+  if (!wgl.EnsureInitialized()) return nullptr;
+
+  const auto dc = GetDC(window);
+  if (!dc) return nullptr;
+  auto cleanupDc = MakeScopeExit([&]() { (void)ReleaseDC(window, dc); });
+
+  int chosenFormat;
+  UINT foundFormats = 0;
+
+  if (!foundFormats) {
+    const int kAttribs[] = {LOCAL_WGL_DRAW_TO_WINDOW_ARB,
+                            true,
+                            LOCAL_WGL_SUPPORT_OPENGL_ARB,
+                            true,
+                            LOCAL_WGL_DOUBLE_BUFFER_ARB,
+                            true,
+                            LOCAL_WGL_ACCELERATION_ARB,
+                            LOCAL_WGL_FULL_ACCELERATION_ARB,
+                            0};
+    const int kAttribsForWebRender[] = {LOCAL_WGL_DRAW_TO_WINDOW_ARB,
+                                        true,
+                                        LOCAL_WGL_SUPPORT_OPENGL_ARB,
+                                        true,
+                                        LOCAL_WGL_DOUBLE_BUFFER_ARB,
+                                        true,
+                                        LOCAL_WGL_DEPTH_BITS_ARB,
+                                        24,
+                                        LOCAL_WGL_ACCELERATION_ARB,
+                                        LOCAL_WGL_FULL_ACCELERATION_ARB,
+                                        0};
+    const int* attribs;
+    if (isWebRender) {
+      attribs = kAttribsForWebRender;
+    } else {
+      attribs = kAttribs;
+    }
+
+    if (!wgl.mSymbols.fChoosePixelFormat(wgl.RootDc(), attribs, nullptr, 1,
+                                         &chosenFormat, &foundFormats)) {
+      foundFormats = 0;
+    }
+  }
+  if (!foundFormats) {
+    if (requireAccelerated) return nullptr;
+
+    const int kAttribs[] = {LOCAL_WGL_DRAW_TO_WINDOW_ARB,
+                            true,
+                            LOCAL_WGL_SUPPORT_OPENGL_ARB,
+                            true,
+                            LOCAL_WGL_DOUBLE_BUFFER_ARB,
+                            true,
+                            0};
+    const int kAttribsForWebRender[] = {LOCAL_WGL_DRAW_TO_WINDOW_ARB,
+                                        true,
+                                        LOCAL_WGL_SUPPORT_OPENGL_ARB,
+                                        true,
+                                        LOCAL_WGL_DOUBLE_BUFFER_ARB,
+                                        true,
+                                        LOCAL_WGL_DEPTH_BITS_ARB,
+                                        24,
+                                        0};
+
+    const int* attribs;
+    if (isWebRender) {
+      attribs = kAttribsForWebRender;
+    } else {
+      attribs = kAttribs;
+    }
+
+    if (!wgl.mSymbols.fChoosePixelFormat(wgl.RootDc(), attribs, nullptr, 1,
+                                         &chosenFormat, &foundFormats)) {
+      foundFormats = 0;
+    }
+  }
+  if (!foundFormats) return nullptr;
+
+  // We need to make sure we call SetPixelFormat -after- calling
+  // EnsureInitialized, otherwise it can load/unload the dll and
+  // wglCreateContext will fail.
+
+  SetPixelFormat(dc, chosenFormat, nullptr);
+  const auto context = sWGLLib.CreateContextWithFallback(dc, false);
+  if (!context) return nullptr;
+
+  const RefPtr<GLContextWGL> gl = new GLContextWGL({}, dc, context);
+  cleanupDc.release();
+  gl->mIsDoubleBuffered = true;
+  if (!gl->Init()) return nullptr;
+
+  return gl;
+}
+
+already_AddRefed<GLContext> GLContextProviderWGL::CreateForCompositorWidget(
+    CompositorWidget* aCompositorWidget, bool aHardwareWebRender,
+    bool aForceAccelerated) {
+  if (!aCompositorWidget) {
+    MOZ_ASSERT(false);
+    return nullptr;
+  }
+  return CreateForWidget(aCompositorWidget->AsWindows()->GetHwnd(),
+                         aHardwareWebRender, aForceAccelerated)
+      .forget();
+}
+
+/*static*/
+already_AddRefed<GLContext> GLContextProviderWGL::CreateHeadless(
+    const GLContextCreateDesc& desc, nsACString* const out_failureId) {
+  auto& wgl = sWGLLib;
+  if (!wgl.EnsureInitialized()) return nullptr;
+
+  int chosenFormat;
+  UINT foundFormats = 0;
+
+  if (!foundFormats) {
+    const int kAttribs[] = {LOCAL_WGL_DRAW_TO_PBUFFER_ARB,
+                            true,
+                            LOCAL_WGL_SUPPORT_OPENGL_ARB,
+                            true,
+                            LOCAL_WGL_ACCELERATION_ARB,
+                            LOCAL_WGL_FULL_ACCELERATION_ARB,
+                            0};
+    if (!wgl.mSymbols.fChoosePixelFormat(wgl.RootDc(), kAttribs, nullptr, 1,
+                                         &chosenFormat, &foundFormats)) {
+      foundFormats = 0;
+    }
+  }
+  if (!foundFormats) {
+    const int kAttribs[] = {LOCAL_WGL_DRAW_TO_PBUFFER_ARB, true,
+                            LOCAL_WGL_SUPPORT_OPENGL_ARB, true, 0};
+    if (!wgl.mSymbols.fChoosePixelFormat(wgl.RootDc(), kAttribs, nullptr, 1,
+                                         &chosenFormat, &foundFormats)) {
+      foundFormats = 0;
+    }
+  }
+  if (!foundFormats) return nullptr;
+  const int kPbufferAttribs[] = {0};
+  const auto pbuffer = wgl.mSymbols.fCreatePbuffer(wgl.RootDc(), chosenFormat,
+                                                   1, 1, kPbufferAttribs);
+  if (!pbuffer) return nullptr;
+  auto cleanupPbuffer =
+      MakeScopeExit([&]() { (void)wgl.mSymbols.fDestroyPbuffer(pbuffer); });
+
+  const auto dc = wgl.mSymbols.fGetPbufferDC(pbuffer);
+  if (!dc) return nullptr;
+  auto cleanupDc = MakeScopeExit(
+      [&]() { (void)wgl.mSymbols.fReleasePbufferDC(pbuffer, dc); });
+
+  const auto context = wgl.CreateContextWithFallback(dc, true);
+  if (!context) return nullptr;
+
+  const auto fullDesc = GLContextDesc{desc, true};
+  const RefPtr<GLContextWGL> gl =
+      new GLContextWGL(fullDesc, pbuffer, dc, context, chosenFormat);
+  cleanupPbuffer.release();
+  cleanupDc.release();
+  if (!gl->Init()) return nullptr;
+
+  return RefPtr<GLContext>(gl.get()).forget();
+}
+
+/*static*/
+GLContext* GLContextProviderWGL::GetGlobalContext() { return nullptr; }
+
+/*static*/
+void GLContextProviderWGL::Shutdown() {}
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/GLContextSymbols.h b/gfx/gl/GLContextSymbols.h
new file mode 100644
index 0000000000..ac74f32e14
--- /dev/null
+++ b/gfx/gl/GLContextSymbols.h
@@ -0,0 +1,467 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXTSYMBOLS_H_
+#define GLCONTEXTSYMBOLS_H_
+
+#include "GLDefs.h"
+
+/*
+ * This file should only be included by GLContext.h, and should be
+ * autogenerated in the future.
+ */
+
+#ifndef GLAPIENTRY
+#  ifdef XP_WIN
+#    define GLAPIENTRY __stdcall
+#  else
+#    define GLAPIENTRY
+#  endif
+#  define GLAPI
+#endif
+
+namespace mozilla {
+namespace gl {
+
+struct GLContextSymbols final {
+  void(GLAPIENTRY* fActiveTexture)(GLenum);
+  void(GLAPIENTRY* fAttachShader)(GLuint, GLuint);
+  void(GLAPIENTRY* fBeginQuery)(GLenum, GLuint);
+  void(GLAPIENTRY* fBindAttribLocation)(GLuint, GLuint, const GLchar*);
+  void(GLAPIENTRY* fBindBuffer)(GLenum, GLuint);
+  void(GLAPIENTRY* fBindTexture)(GLenum, GLuint);
+  void(GLAPIENTRY* fBindVertexArray)(GLuint);
+  void(GLAPIENTRY* fBlendColor)(GLfloat, GLfloat, GLfloat, GLfloat);
+  void(GLAPIENTRY* fBlendEquation)(GLenum);
+  void(GLAPIENTRY* fBlendEquationSeparate)(GLenum, GLenum);
+  void(GLAPIENTRY* fBlendFunc)(GLenum, GLenum);
+  void(GLAPIENTRY* fBlendFuncSeparate)(GLenum, GLenum, GLenum, GLenum);
+  void(GLAPIENTRY* fBufferData)(GLenum, GLsizeiptr, const GLvoid*, GLenum);
+  void(GLAPIENTRY* fBufferSubData)(GLenum, GLintptr, GLsizeiptr, const GLvoid*);
+
+  void(GLAPIENTRY* fClear)(GLbitfield);
+  void(GLAPIENTRY* fClearBufferfi)(GLenum, GLint, GLfloat, GLint);
+  void(GLAPIENTRY* fClearBufferfv)(GLenum, GLint, const GLfloat*);
+  void(GLAPIENTRY* fClearBufferiv)(GLenum, GLint, const GLint*);
+  void(GLAPIENTRY* fClearBufferuiv)(GLenum, GLint, const GLuint*);
+  void(GLAPIENTRY* fClearColor)(GLfloat, GLfloat, GLfloat, GLfloat);
+  void(GLAPIENTRY* fClearStencil)(GLint);
+  void(GLAPIENTRY* fColorMask)(realGLboolean, realGLboolean, realGLboolean,
+                               realGLboolean);
+  void(GLAPIENTRY* fCompressedTexImage2D)(GLenum, GLint, GLenum, GLsizei,
+                                          GLsizei, GLint, GLsizei,
+                                          const GLvoid*);
+  void(GLAPIENTRY* fCompressedTexSubImage2D)(GLenum, GLint, GLint, GLint,
+                                             GLsizei, GLsizei, GLenum, GLsizei,
+                                             const GLvoid*);
+  void(GLAPIENTRY* fCullFace)(GLenum);
+  void(GLAPIENTRY* fDetachShader)(GLuint, GLuint);
+  void(GLAPIENTRY* fDepthFunc)(GLenum);
+  void(GLAPIENTRY* fDepthMask)(realGLboolean);
+  void(GLAPIENTRY* fDisable)(GLenum);
+  void(GLAPIENTRY* fDisableVertexAttribArray)(GLuint);
+  void(GLAPIENTRY* fDrawArrays)(GLenum, GLint, GLsizei);
+  void(GLAPIENTRY* fDrawBuffer)(GLenum);
+  void(GLAPIENTRY* fDrawBuffers)(GLsizei, const GLenum*);
+  void(GLAPIENTRY* fDrawElements)(GLenum, GLsizei, GLenum, const GLvoid*);
+  void(GLAPIENTRY* fEnable)(GLenum);
+  void(GLAPIENTRY* fEnableVertexAttribArray)(GLuint);
+  void(GLAPIENTRY* fFinish)(void);
+  void(GLAPIENTRY* fEndQuery)(GLenum);
+  void(GLAPIENTRY* fFlush)(void);
+  void(GLAPIENTRY* fFrontFace)(GLenum);
+  void(GLAPIENTRY* fGetActiveAttrib)(GLuint, GLuint, GLsizei, GLsizei*, GLint*,
+                                     GLenum*, GLchar*);
+  void(GLAPIENTRY* fGetActiveUniform)(GLuint, GLuint, GLsizei, GLsizei*, GLint*,
+                                      GLenum*, GLchar*);
+  void(GLAPIENTRY* fGetAttachedShaders)(GLuint, GLsizei, GLsizei*, GLuint*);
+  GLint(GLAPIENTRY* fGetAttribLocation)(GLuint, const GLchar*);
+  void(GLAPIENTRY* fGetIntegerv)(GLenum, GLint*);
+  void(GLAPIENTRY* fGetFloatv)(GLenum, GLfloat*);
+  void(GLAPIENTRY* fGetBooleanv)(GLenum, realGLboolean*);
+  void(GLAPIENTRY* fGetBufferParameteriv)(GLenum, GLenum, GLint*);
+  void(GLAPIENTRY* fGenerateMipmap)(GLenum);
+  GLenum(GLAPIENTRY* fGetError)(void);
+  void(GLAPIENTRY* fGetProgramiv)(GLuint, GLenum, GLint*);
+  void(GLAPIENTRY* fGetProgramInfoLog)(GLuint, GLsizei, GLsizei*, GLchar*);
+  void(GLAPIENTRY* fGetQueryiv)(GLenum, GLenum, GLint*);
+  void(GLAPIENTRY* fGetQueryObjectiv)(GLuint, GLenum, GLint*);
+  void(GLAPIENTRY* fGetQueryObjectuiv)(GLuint, GLenum, GLuint*);
+  void(GLAPIENTRY* fGetQueryObjecti64v)(GLuint, GLenum, GLint64*);
+  void(GLAPIENTRY* fGetQueryObjectui64v)(GLuint, GLenum, GLuint64*);
+  void(GLAPIENTRY* fQueryCounter)(GLuint, GLenum);
+  void(GLAPIENTRY* fTexParameteri)(GLenum, GLenum, GLint);
+  void(GLAPIENTRY* fTexParameteriv)(GLenum, GLenum, const GLint*);
+  void(GLAPIENTRY* fTexParameterf)(GLenum, GLenum, GLfloat);
+  GLubyte*(GLAPIENTRY* fGetString)(GLenum);
+  void(GLAPIENTRY* fGetTexImage)(GLenum, GLint, GLenum, GLenum, GLvoid*);
+  void(GLAPIENTRY* fGetTexLevelParameteriv)(GLenum, GLint, GLenum, GLint*);
+  void(GLAPIENTRY* fGetTexParameterfv)(GLenum, GLenum, GLfloat*);
+  void(GLAPIENTRY* fGetTexParameteriv)(GLenum, GLenum, GLint*);
+  void(GLAPIENTRY* fGetUniformfv)(GLuint, GLint, GLfloat*);
+  void(GLAPIENTRY* fGetUniformiv)(GLuint, GLint, GLint*);
+  void(GLAPIENTRY* fGetUniformuiv)(GLuint, GLint, GLuint*);
+  GLint(GLAPIENTRY* fGetUniformLocation)(GLuint, const GLchar*);
+  void(GLAPIENTRY* fGetVertexAttribfv)(GLuint, GLenum, GLfloat*);
+  void(GLAPIENTRY* fGetVertexAttribiv)(GLuint, GLenum, GLint*);
+  void(GLAPIENTRY* fGetVertexAttribPointerv)(GLuint, GLenum, GLvoid**);
+  void(GLAPIENTRY* fHint)(GLenum, GLenum);
+  realGLboolean(GLAPIENTRY* fIsBuffer)(GLuint);
+  realGLboolean(GLAPIENTRY* fIsEnabled)(GLenum);
+  realGLboolean(GLAPIENTRY* fIsProgram)(GLuint);
+  realGLboolean(GLAPIENTRY* fIsQuery)(GLuint);
+  realGLboolean(GLAPIENTRY* fIsShader)(GLuint);
+  realGLboolean(GLAPIENTRY* fIsTexture)(GLuint);
+  void(GLAPIENTRY* fLineWidth)(GLfloat);
+  void(GLAPIENTRY* fLinkProgram)(GLuint);
+  void(GLAPIENTRY* fPixelStorei)(GLenum, GLint);
+  void(GLAPIENTRY* fPointParameterf)(GLenum, GLfloat);
+  void(GLAPIENTRY* fPolygonMode)(GLenum, GLenum);
+  void(GLAPIENTRY* fPolygonOffset)(GLfloat, GLfloat);
+  void(GLAPIENTRY* fReadBuffer)(GLenum);
+  void(GLAPIENTRY* fReadPixels)(GLint, GLint, GLsizei, GLsizei, GLenum, GLenum,
+                                GLvoid*);
+  void(GLAPIENTRY* fSampleCoverage)(GLclampf, realGLboolean);
+  void(GLAPIENTRY* fStencilFunc)(GLenum, GLint, GLuint);
+  void(GLAPIENTRY* fStencilFuncSeparate)(GLenum, GLenum, GLint, GLuint);
+  void(GLAPIENTRY* fStencilMask)(GLuint);
+  void(GLAPIENTRY* fStencilMaskSeparate)(GLenum, GLuint);
+  void(GLAPIENTRY* fStencilOp)(GLenum, GLenum, GLenum);
+  void(GLAPIENTRY* fStencilOpSeparate)(GLenum, GLenum, GLenum, GLenum);
+  void(GLAPIENTRY* fTexImage2D)(GLenum, GLint, GLint, GLsizei, GLsizei, GLint,
+                                GLenum, GLenum, const GLvoid*);
+  void(GLAPIENTRY* fTexSubImage2D)(GLenum, GLint, GLint, GLint, GLsizei,
+                                   GLsizei, GLenum, GLenum, const void*);
+  void(GLAPIENTRY* fTextureRangeAPPLE)(GLenum, GLsizei, GLvoid*);
+  void(GLAPIENTRY* fFinishObjectAPPLE)(GLenum, GLint);
+  realGLboolean(GLAPIENTRY* fTestObjectAPPLE)(GLenum, GLint);
+  void(GLAPIENTRY* fUniform1f)(GLint, GLfloat);
+  void(GLAPIENTRY* fUniform1fv)(GLint, GLsizei, const GLfloat*);
+  void(GLAPIENTRY* fUniform1i)(GLint, GLint);
+  void(GLAPIENTRY* fUniform1iv)(GLint, GLsizei, const GLint*);
+  void(GLAPIENTRY* fUniform2f)(GLint, GLfloat, GLfloat);
+  void(GLAPIENTRY* fUniform2fv)(GLint, GLsizei, const GLfloat*);
+  void(GLAPIENTRY* fUniform2i)(GLint, GLint, GLint);
+  void(GLAPIENTRY* fUniform2iv)(GLint, GLsizei, const GLint*);
+  void(GLAPIENTRY* fUniform3f)(GLint, GLfloat, GLfloat, GLfloat);
+  void(GLAPIENTRY* fUniform3fv)(GLint, GLsizei, const GLfloat*);
+  void(GLAPIENTRY* fUniform3i)(GLint, GLint, GLint, GLint);
+  void(GLAPIENTRY* fUniform3iv)(GLint, GLsizei, const GLint*);
+  void(GLAPIENTRY* fUniform4f)(GLint, GLfloat, GLfloat, GLfloat, GLfloat);
+  void(GLAPIENTRY* fUniform4fv)(GLint, GLsizei, const GLfloat*);
+  void(GLAPIENTRY* fUniform4i)(GLint, GLint, GLint, GLint, GLint);
+  void(GLAPIENTRY* fUniform4iv)(GLint, GLsizei, const GLint*);
+  void(GLAPIENTRY* fUniformMatrix2fv)(GLint, GLsizei, realGLboolean,
+                                      const GLfloat*);
+  void(GLAPIENTRY* fUniformMatrix2x3fv)(GLint, GLsizei, realGLboolean,
+                                        const GLfloat*);
+  void(GLAPIENTRY* fUniformMatrix2x4fv)(GLint, GLsizei, realGLboolean,
+                                        const GLfloat*);
+  void(GLAPIENTRY* fUniformMatrix3fv)(GLint, GLsizei, realGLboolean,
+                                      const GLfloat*);
+  void(GLAPIENTRY* fUniformMatrix3x2fv)(GLint, GLsizei, realGLboolean,
+                                        const GLfloat*);
+  void(GLAPIENTRY* fUniformMatrix3x4fv)(GLint, GLsizei, realGLboolean,
+                                        const GLfloat*);
+  void(GLAPIENTRY* fUniformMatrix4fv)(GLint, GLsizei, realGLboolean,
+                                      const GLfloat*);
+  void(GLAPIENTRY* fUniformMatrix4x2fv)(GLint, GLsizei, realGLboolean,
+                                        const GLfloat*);
+  void(GLAPIENTRY* fUniformMatrix4x3fv)(GLint, GLsizei, realGLboolean,
+                                        const GLfloat*);
+
+  void(GLAPIENTRY* fUseProgram)(GLuint);
+  void(GLAPIENTRY* fValidateProgram)(GLuint);
+  void(GLAPIENTRY* fVertexAttribPointer)(GLuint, GLint, GLenum, realGLboolean,
+                                         GLsizei, const GLvoid*);
+  void(GLAPIENTRY* fVertexAttrib1f)(GLuint, GLfloat);
+  void(GLAPIENTRY* fVertexAttrib2f)(GLuint, GLfloat, GLfloat);
+  void(GLAPIENTRY* fVertexAttrib3f)(GLuint, GLfloat, GLfloat, GLfloat);
+  void(GLAPIENTRY* fVertexAttrib4f)(GLuint, GLfloat, GLfloat, GLfloat, GLfloat);
+  void(GLAPIENTRY* fVertexAttrib1fv)(GLuint, const GLfloat*);
+  void(GLAPIENTRY* fVertexAttrib2fv)(GLuint, const GLfloat*);
+  void(GLAPIENTRY* fVertexAttrib3fv)(GLuint, const GLfloat*);
+  void(GLAPIENTRY* fVertexAttrib4fv)(GLuint, const GLfloat*);
+  void(GLAPIENTRY* fCompileShader)(GLuint);
+  void(GLAPIENTRY* fCopyTexImage2D)(GLenum, GLint, GLenum, GLint, GLint,
+                                    GLsizei, GLsizei, GLint);
+  void(GLAPIENTRY* fCopyTexSubImage2D)(GLenum, GLint, GLint, GLint, GLint,
+                                       GLint, GLsizei, GLsizei);
+  void(GLAPIENTRY* fGetShaderiv)(GLuint, GLenum, GLint*);
+  void(GLAPIENTRY* fGetShaderInfoLog)(GLuint, GLsizei, GLsizei*, GLchar*);
+  void(GLAPIENTRY* fGetShaderPrecisionFormat)(GLenum, GLenum, GLint*, GLint*);
+  void(GLAPIENTRY* fGetShaderSource)(GLint, GLsizei, GLsizei*, GLchar*);
+  void(GLAPIENTRY* fShaderSource)(GLuint, GLsizei, const GLchar* const*,
+                                  const GLint*);
+
+  void(GLAPIENTRY* fBindFramebuffer)(GLenum, GLuint);
+  void(GLAPIENTRY* fBindRenderbuffer)(GLenum, GLuint);
+  GLenum(GLAPIENTRY* fCheckFramebufferStatus)(GLenum);
+  void(GLAPIENTRY* fFramebufferRenderbuffer)(GLenum, GLenum, GLenum, GLuint);
+  void(GLAPIENTRY* fFramebufferTexture2D)(GLenum, GLenum, GLenum, GLuint,
+                                          GLint);
+  void(GLAPIENTRY* fFramebufferTextureLayer)(GLenum, GLenum, GLuint, GLint,
+                                             GLint);
+  void(GLAPIENTRY* fGetFramebufferAttachmentParameteriv)(GLenum, GLenum, GLenum,
+                                                         GLint*);
+  void(GLAPIENTRY* fGetRenderbufferParameteriv)(GLenum, GLenum, GLint*);
+  realGLboolean(GLAPIENTRY* fIsFramebuffer)(GLuint);
+  realGLboolean(GLAPIENTRY* fIsRenderbuffer)(GLuint);
+  realGLboolean(GLAPIENTRY* fIsVertexArray)(GLuint);
+  void(GLAPIENTRY* fRenderbufferStorage)(GLenum, GLenum, GLsizei, GLsizei);
+
+  void(GLAPIENTRY* fInvalidateFramebuffer)(GLenum, GLsizei, const GLenum*);
+  void(GLAPIENTRY* fInvalidateSubFramebuffer)(GLenum, GLsizei, const GLenum*,
+                                              GLint, GLint, GLsizei, GLsizei);
+
+  // These functions are only used by Skia/GL in desktop mode.
+  // Other parts of Gecko should avoid using these
+  void(GLAPIENTRY* fClientActiveTexture)(GLenum);
+  void(GLAPIENTRY* fDisableClientState)(GLenum);
+  void(GLAPIENTRY* fEnableClientState)(GLenum);
+  void(GLAPIENTRY* fLoadIdentity)(void);
+  void(GLAPIENTRY* fLoadMatrixd)(const GLdouble*);
+  void(GLAPIENTRY* fLoadMatrixf)(const GLfloat*);
+  void(GLAPIENTRY* fMatrixMode)(GLenum);
+  void(GLAPIENTRY* fTexGeni)(GLenum, GLenum, GLint);
+  void(GLAPIENTRY* fTexGenf)(GLenum, GLenum, GLfloat);
+  void(GLAPIENTRY* fTexGenfv)(GLenum, GLenum, const GLfloat*);
+  void(GLAPIENTRY* fVertexPointer)(GLint, GLenum, GLsizei, const GLvoid*);
+
+  void(GLAPIENTRY* fBlitFramebuffer)(GLint, GLint, GLint, GLint, GLint, GLint,
+                                     GLint, GLint, GLbitfield, GLenum);
+  void(GLAPIENTRY* fRenderbufferStorageMultisample)(GLenum, GLsizei, GLenum,
+                                                    GLsizei, GLsizei);
+
+  /* These are different between GLES2 and desktop GL; we hide those
+   * differences, use the GL names, but the most limited data type.
+   */
+  void(GLAPIENTRY* fDepthRangef)(GLclampf, GLclampf);
+  void(GLAPIENTRY* fClearDepthf)(GLclampf);
+
+  void(GLAPIENTRY* fDepthRange)(GLclampd, GLclampd);
+  void(GLAPIENTRY* fClearDepth)(GLclampd);
+
+  /* These are special because we end up tracking these so that we don't
+   * have to query the values from GL.
+   */
+
+  void(GLAPIENTRY* fViewport)(GLint, GLint, GLsizei, GLsizei);
+  void(GLAPIENTRY* fScissor)(GLint, GLint, GLsizei, GLsizei);
+
+  /* These are special -- they create or delete GL resources that can live
+   * in a shared namespace.  In DEBUG, we wrap these calls so that we can
+   * check when we have something that failed to do cleanup at the time the
+   * final context is destroyed.
+   */
+
+  GLuint(GLAPIENTRY* fCreateProgram)();
+  GLuint(GLAPIENTRY* fCreateShader)(GLenum);
+  void(GLAPIENTRY* fGenBuffers)(GLsizei, GLuint*);
+  void(GLAPIENTRY* fGenQueries)(GLsizei, GLuint*);
+  void(GLAPIENTRY* fGenTextures)(GLsizei, GLuint*);
+  void(GLAPIENTRY* fGenFramebuffers)(GLsizei, GLuint*);
+  void(GLAPIENTRY* fGenRenderbuffers)(GLsizei, GLuint*);
+  void(GLAPIENTRY* fGenVertexArrays)(GLsizei, GLuint*);
+
+  void(GLAPIENTRY* fDeleteProgram)(GLuint);
+  void(GLAPIENTRY* fDeleteShader)(GLuint);
+  void(GLAPIENTRY* fDeleteBuffers)(GLsizei, const GLuint*);
+  void(GLAPIENTRY* fDeleteQueries)(GLsizei, const GLuint*);
+  void(GLAPIENTRY* fDeleteTextures)(GLsizei, const GLuint*);
+  void(GLAPIENTRY* fDeleteFramebuffers)(GLsizei, const GLuint*);
+  void(GLAPIENTRY* fDeleteRenderbuffers)(GLsizei, const GLuint*);
+  void(GLAPIENTRY* fDeleteVertexArrays)(GLsizei, const GLuint*);
+
+  void*(GLAPIENTRY* fMapBuffer)(GLenum, GLenum);
+  realGLboolean(GLAPIENTRY* fUnmapBuffer)(GLenum);
+
+  // ARB_copy_buffer / OpenGL 3.1 / OpenGL ES 3.0
+  void(GLAPIENTRY* fCopyBufferSubData)(GLenum, GLenum, GLintptr, GLintptr,
+                                       GLsizeiptr);
+
+  GLenum(GLAPIENTRY* fGetGraphicsResetStatus)();
+
+  // ARB_sync
+  GLsync(GLAPIENTRY* fFenceSync)(GLenum, GLbitfield);
+  realGLboolean(GLAPIENTRY* fIsSync)(GLsync);
+  void(GLAPIENTRY* fDeleteSync)(GLsync);
+  GLenum(GLAPIENTRY* fClientWaitSync)(GLsync, GLbitfield, GLuint64);
+  void(GLAPIENTRY* fWaitSync)(GLsync, GLbitfield, GLuint64);
+  void(GLAPIENTRY* fGetInteger64v)(GLenum, GLint64*);
+  void(GLAPIENTRY* fGetSynciv)(GLsync, GLenum, GLsizei, GLsizei*, GLint*);
+
+  // OES_egl_image
+  void(GLAPIENTRY* fEGLImageTargetTexture2D)(GLenum, GLeglImage);
+  void(GLAPIENTRY* fEGLImageTargetRenderbufferStorage)(GLenum, GLeglImage);
+
+  // ARB_draw_instanced
+  void(GLAPIENTRY* fDrawArraysInstanced)(GLenum, GLint, GLsizei, GLsizei);
+  void(GLAPIENTRY* fDrawElementsInstanced)(GLenum, GLsizei, GLenum,
+                                           const GLvoid*, GLsizei);
+
+  // ARB_instanced_array
+  void(GLAPIENTRY* fVertexAttribDivisor)(GLuint, GLuint);
+
+  // ARB_internalformat_query
+  void(GLAPIENTRY* fGetInternalformativ)(GLenum, GLenum, GLenum, GLsizei,
+                                         GLint*);
+
+  // ARB_transform_feedback2 / OpenGL 4.0 / OpenGL ES 3.0
+  void(GLAPIENTRY* fBindBufferBase)(GLenum, GLuint, GLuint);
+  void(GLAPIENTRY* fBindBufferRange)(GLenum, GLuint, GLuint, GLintptr,
+                                     GLsizeiptr);
+
+  void(GLAPIENTRY* fGenTransformFeedbacks)(GLsizei, GLuint*);
+  void(GLAPIENTRY* fDeleteTransformFeedbacks)(GLsizei, const GLuint*);
+  realGLboolean(GLAPIENTRY* fIsTransformFeedback)(GLuint);
+  void(GLAPIENTRY* fBindTransformFeedback)(GLenum, GLuint);
+  void(GLAPIENTRY* fTransformFeedbackVaryings)(GLuint, GLsizei,
+                                               const GLchar* const*, GLenum);
+  void(GLAPIENTRY* fGetTransformFeedbackVarying)(GLuint, GLuint, GLsizei,
+                                                 GLsizei*, GLsizei*, GLenum*,
+                                                 GLchar*);
+  void(GLAPIENTRY* fBeginTransformFeedback)(GLenum);
+  void(GLAPIENTRY* fEndTransformFeedback)(void);
+  void(GLAPIENTRY* fPauseTransformFeedback)(void);
+  void(GLAPIENTRY* fResumeTransformFeedback)(void);
+
+  void(GLAPIENTRY* fGetIntegeri_v)(GLenum, GLuint, GLint*);
+  void(GLAPIENTRY* fGetInteger64i_v)(GLenum, GLuint, GLint64*);
+
+  // EXT_transform_feedback only
+  void(GLAPIENTRY* fBindBufferOffset)(GLenum, GLuint, GLuint, GLintptr);
+
+  // KHR_debug
+  void(GLAPIENTRY* fDebugMessageControl)(GLenum, GLenum, GLenum, GLsizei,
+                                         const GLuint*, realGLboolean);
+  void(GLAPIENTRY* fDebugMessageInsert)(GLenum, GLenum, GLuint, GLenum, GLsizei,
+                                        const GLchar*);
+  void(GLAPIENTRY* fDebugMessageCallback)(GLDEBUGPROC, const GLvoid*);
+  GLuint(GLAPIENTRY* fGetDebugMessageLog)(GLuint, GLsizei, GLenum*, GLenum*,
+                                          GLuint*, GLenum*, GLsizei*, GLchar*);
+  void(GLAPIENTRY* fGetPointerv)(GLenum, GLvoid**);
+  void(GLAPIENTRY* fPushDebugGroup)(GLenum, GLuint, GLsizei, const GLchar*);
+  void(GLAPIENTRY* fPopDebugGroup)(void);
+  void(GLAPIENTRY* fObjectLabel)(GLenum, GLuint, GLsizei, const GLchar*);
+  void(GLAPIENTRY* fGetObjectLabel)(GLenum, GLuint, GLsizei, GLsizei*, GLchar*);
+  void(GLAPIENTRY* fObjectPtrLabel)(const GLvoid*, GLsizei, const GLchar*);
+  void(GLAPIENTRY* fGetObjectPtrLabel)(const GLvoid*, GLsizei, GLsizei*,
+                                       GLchar*);
+
+  // NV_fence
+  void(GLAPIENTRY* fGenFences)(GLsizei, GLuint*);
+  void(GLAPIENTRY* fDeleteFences)(GLsizei, const GLuint*);
+  void(GLAPIENTRY* fSetFence)(GLuint, GLenum);
+  realGLboolean(GLAPIENTRY* fTestFence)(GLuint);
+  void(GLAPIENTRY* fFinishFence)(GLuint);
+  realGLboolean(GLAPIENTRY* fIsFence)(GLuint);
+  void(GLAPIENTRY* fGetFenceiv)(GLuint, GLenum, GLint*);
+
+  // map_buffer_range
+  void*(GLAPIENTRY* fMapBufferRange)(GLenum, GLintptr, GLsizeiptr, GLbitfield);
+  void(GLAPIENTRY* fFlushMappedBufferRange)(GLenum, GLintptr, GLsizeiptr);
+
+  // sampler_object
+  void(GLAPIENTRY* fGenSamplers)(GLsizei, GLuint*);
+  void(GLAPIENTRY* fDeleteSamplers)(GLsizei, const GLuint*);
+  realGLboolean(GLAPIENTRY* fIsSampler)(GLuint);
+  void(GLAPIENTRY* fBindSampler)(GLuint, GLuint);
+  void(GLAPIENTRY* fSamplerParameteri)(GLuint, GLenum, GLint);
+  void(GLAPIENTRY* fSamplerParameteriv)(GLuint, GLenum, const GLint*);
+  void(GLAPIENTRY* fSamplerParameterf)(GLuint, GLenum, GLfloat);
+  void(GLAPIENTRY* fSamplerParameterfv)(GLuint, GLenum, const GLfloat*);
+  void(GLAPIENTRY* fGetSamplerParameteriv)(GLuint, GLenum, GLint*);
+  void(GLAPIENTRY* fGetSamplerParameterfv)(GLuint, GLenum, GLfloat*);
+
+  // texture_storage
+  void(GLAPIENTRY* fTexStorage2D)(GLenum, GLsizei, GLenum, GLsizei, GLsizei);
+  void(GLAPIENTRY* fTexStorage3D)(GLenum, GLsizei, GLenum, GLsizei, GLsizei,
+                                  GLsizei);
+
+  // uniform_buffer_object
+  void(GLAPIENTRY* fGetUniformIndices)(GLuint, GLsizei, const GLchar* const*,
+                                       GLuint*);
+  void(GLAPIENTRY* fGetActiveUniformsiv)(GLuint, GLsizei, const GLuint*, GLenum,
+                                         GLint*);
+  GLuint(GLAPIENTRY* fGetUniformBlockIndex)(GLuint, const GLchar*);
+  void(GLAPIENTRY* fGetActiveUniformBlockiv)(GLuint, GLuint, GLenum, GLint*);
+  void(GLAPIENTRY* fGetActiveUniformBlockName)(GLuint, GLuint, GLsizei,
+                                               GLsizei*, GLchar*);
+  void(GLAPIENTRY* fUniformBlockBinding)(GLuint, GLuint, GLuint);
+
+  // EXT_gpu_shader4
+  void(GLAPIENTRY* fGetVertexAttribIiv)(GLuint, GLenum, GLint*);
+  void(GLAPIENTRY* fGetVertexAttribIuiv)(GLuint, GLenum, GLuint*);
+  void(GLAPIENTRY* fVertexAttribI4i)(GLuint, GLint, GLint, GLint, GLint);
+  void(GLAPIENTRY* fVertexAttribI4iv)(GLuint, const GLint*);
+  void(GLAPIENTRY* fVertexAttribI4ui)(GLuint, GLuint, GLuint, GLuint, GLuint);
+  void(GLAPIENTRY* fVertexAttribI4uiv)(GLuint, const GLuint*);
+  void(GLAPIENTRY* fVertexAttribIPointer)(GLuint, GLint, GLenum, GLsizei,
+                                          const GLvoid*);
+  void(GLAPIENTRY* fUniform1ui)(GLint, GLuint);
+  void(GLAPIENTRY* fUniform2ui)(GLint, GLuint, GLuint);
+  void(GLAPIENTRY* fUniform3ui)(GLint, GLuint, GLuint, GLuint);
+  void(GLAPIENTRY* fUniform4ui)(GLint, GLuint, GLuint, GLuint, GLuint);
+  void(GLAPIENTRY* fUniform1uiv)(GLint, GLsizei, const GLuint*);
+  void(GLAPIENTRY* fUniform2uiv)(GLint, GLsizei, const GLuint*);
+  void(GLAPIENTRY* fUniform3uiv)(GLint, GLsizei, const GLuint*);
+  void(GLAPIENTRY* fUniform4uiv)(GLint, GLsizei, const GLuint*);
+  GLint(GLAPIENTRY* fGetFragDataLocation)(GLuint, const GLchar*);
+
+  // 3D Textures
+  void(GLAPIENTRY* fTexImage3D)(GLenum, GLint, GLenum, GLenum, GLsizei, GLsizei,
+                                GLint, GLenum, GLenum, const GLvoid*);
+
+  void(GLAPIENTRY* fTexSubImage3D)(GLenum, GLint, GLint, GLint, GLint, GLsizei,
+                                   GLsizei, GLsizei, GLenum, GLenum,
+                                   const GLvoid*);
+
+  void(GLAPIENTRY* fCopyTexSubImage3D)(GLenum, GLint, GLint, GLint, GLint,
+                                       GLint, GLint, GLsizei, GLsizei);
+
+  void(GLAPIENTRY* fCompressedTexImage3D)(GLenum, GLint, GLenum, GLsizei,
+                                          GLsizei, GLsizei, GLint, GLsizei,
+                                          const GLvoid*);
+
+  void(GLAPIENTRY* fCompressedTexSubImage3D)(GLenum, GLint, GLint, GLint, GLint,
+                                             GLsizei, GLsizei, GLsizei, GLenum,
+                                             GLsizei, const GLvoid*);
+
+  // get_string_indexed
+  const GLubyte*(GLAPIENTRY* fGetStringi)(GLenum, GLuint);
+
+  // APPLE_framebuffer_multisample
+  void(GLAPIENTRY* fResolveMultisampleFramebufferAPPLE)(void);
+
+  // NV_texture_barrier
+  void(GLAPIENTRY* fTextureBarrier)(void);
+
+  // NV_primitive_restart
+  void(GLAPIENTRY* fPrimitiveRestartIndex)(GLuint);
+
+  // OVR_multiview2
+  void(GLAPIENTRY* fFramebufferTextureMultiview)(GLenum target,
+                                                 GLenum attachment,
+                                                 GLuint texture, GLint level,
+                                                 GLint baseViewIndex,
+                                                 GLsizei numViews);
+
+  // draw_buffers_indexed
+  void(GLAPIENTRY* fBlendEquationSeparatei)(GLuint, GLenum, GLenum);
+  void(GLAPIENTRY* fBlendFuncSeparatei)(GLuint, GLenum, GLenum, GLenum, GLenum);
+  void(GLAPIENTRY* fColorMaski)(GLuint, realGLboolean, realGLboolean,
+                                realGLboolean, realGLboolean);
+  void(GLAPIENTRY* fDisablei)(GLenum, GLuint);
+  void(GLAPIENTRY* fEnablei)(GLenum, GLuint);
+
+  // provoking_vertex
+  void(GLAPIENTRY* fProvokingVertex)(GLenum);
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif /* GLCONTEXTSYMBOLS_H_ */
diff --git a/gfx/gl/GLContextTypes.h b/gfx/gl/GLContextTypes.h
new file mode 100644
index 0000000000..5d50186f06
--- /dev/null
+++ b/gfx/gl/GLContextTypes.h
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXT_TYPES_H_
+#define GLCONTEXT_TYPES_H_
+
+#include "GLTypes.h"
+#include "mozilla/TypedEnumBits.h"
+
+namespace mozilla {
+namespace gl {
+
+class GLContext;
+
+enum class GLContextType { Unknown, WGL, CGL, GLX, EGL, EAGL };
+
+enum class OriginPos : uint8_t { TopLeft, BottomLeft };
+
+enum class CreateContextFlags : uint16_t {
+  NONE = 0,
+  REQUIRE_COMPAT_PROFILE = 1 << 0,
+  // Force the use of hardware backed GL, don't allow software implementations.
+  FORBID_SOFTWARE = 1 << 1,
+  /* Don't force discrete GPU to be used (if applicable) */
+  ALLOW_OFFLINE_RENDERER = 1 << 2,
+  // Ask for ES3 if possible
+  PREFER_ES3 = 1 << 3,
+
+  NO_VALIDATION = 1 << 4,
+  PREFER_ROBUSTNESS = 1 << 5,
+  HIGH_POWER = 1 << 6,
+  PROVOKING_VERTEX_DONT_CARE = 1 << 7,
+  PREFER_EXACT_VERSION = 1 << 8,
+  PREFER_MULTITHREADED = 1 << 9,
+
+  FORBID_HARDWARE = 1 << 10,
+};
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(CreateContextFlags)
+
+struct GLContextCreateDesc {
+  CreateContextFlags flags = CreateContextFlags::NONE;
+};
+
+struct GLContextDesc final : public GLContextCreateDesc {
+  bool isOffscreen = false;
+};
+
+} /* namespace gl */
+} /* namespace mozilla */
+
+#endif /* GLCONTEXT_TYPES_H_ */
diff --git a/gfx/gl/GLContextWGL.h b/gfx/gl/GLContextWGL.h
new file mode 100644
index 0000000000..9a86031d46
--- /dev/null
+++ b/gfx/gl/GLContextWGL.h
@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLCONTEXTWGL_H_
+#define GLCONTEXTWGL_H_
+
+#include "GLContext.h"
+#include "WGLLibrary.h"
+
+namespace mozilla {
+namespace gl {
+
+class GLContextWGL final : public GLContext {
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GLContextWGL, override)
+  // From Window: (possibly for offscreen!)
+  GLContextWGL(const GLContextDesc&, HDC aDC, HGLRC aContext,
+               HWND aWindow = nullptr);
+
+  // From PBuffer
+  GLContextWGL(const GLContextDesc&, HANDLE aPbuffer, HDC aDC, HGLRC aContext,
+               int aPixelFormat);
+
+  ~GLContextWGL();
+
+  virtual GLContextType GetContextType() const override {
+    return GLContextType::WGL;
+  }
+
+  virtual bool MakeCurrentImpl() const override;
+  virtual bool IsCurrentImpl() const override;
+  virtual bool IsDoubleBuffered() const override { return mIsDoubleBuffered; }
+  virtual bool SwapBuffers() override;
+  virtual void GetWSIInfo(nsCString* const out) const override;
+
+  Maybe<SymbolLoader> GetSymbolLoader() const override {
+    return Some(sWGLLib.GetSymbolLoader());
+  }
+
+  HGLRC Context() { return mContext; }
+
+ protected:
+  friend class GLContextProviderWGL;
+
+  HDC mDC;
+  HGLRC mContext;
+  HWND mWnd;
+  HANDLE mPBuffer;
+  int mPixelFormat;
+
+ public:
+  bool mIsDoubleBuffered = false;
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GLCONTEXTWGL_H_
diff --git a/gfx/gl/GLDebugUtils.cpp b/gfx/gl/GLDebugUtils.cpp
new file mode 100644
index 0000000000..463ecf2730
--- /dev/null
+++ b/gfx/gl/GLDebugUtils.cpp
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLDebugUtils.h"
+#include "GLConsts.h"
+
+namespace mozilla {
+namespace gl {
+
+const char* GLenumToStr(GLenum e) {
+  switch (e) {
+#define HANDLE_GL_ENUM(x) \
+  case LOCAL_##x:         \
+    return #x
+    HANDLE_GL_ENUM(GL_TRIANGLES);
+    HANDLE_GL_ENUM(GL_TRIANGLE_STRIP);
+    HANDLE_GL_ENUM(GL_TRIANGLE_FAN);
+    HANDLE_GL_ENUM(GL_FRAMEBUFFER);
+    HANDLE_GL_ENUM(GL_RENDERBUFFER);
+    HANDLE_GL_ENUM(GL_DEPTH_ATTACHMENT);
+    HANDLE_GL_ENUM(GL_STENCIL_ATTACHMENT);
+    HANDLE_GL_ENUM(GL_DEPTH_STENCIL_ATTACHMENT);
+    HANDLE_GL_ENUM(GL_TEXTURE_2D);
+    HANDLE_GL_ENUM(GL_TEXTURE_CUBE_MAP_NEGATIVE_X);
+    HANDLE_GL_ENUM(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y);
+    HANDLE_GL_ENUM(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z);
+    HANDLE_GL_ENUM(GL_TEXTURE_CUBE_MAP_POSITIVE_X);
+    HANDLE_GL_ENUM(GL_TEXTURE_CUBE_MAP_POSITIVE_Y);
+    HANDLE_GL_ENUM(GL_TEXTURE_CUBE_MAP_POSITIVE_Z);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT0);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT1);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT2);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT3);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT4);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT5);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT6);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT7);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT8);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT9);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT10);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT11);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT12);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT13);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT14);
+    HANDLE_GL_ENUM(GL_COLOR_ATTACHMENT15);
+    HANDLE_GL_ENUM(GL_UNSIGNED_BYTE);
+    HANDLE_GL_ENUM(GL_UNSIGNED_SHORT);
+    HANDLE_GL_ENUM(GL_UNSIGNED_INT);
+    HANDLE_GL_ENUM(GL_RGBA);
+    HANDLE_GL_ENUM(GL_DEPTH_COMPONENT);
+#undef HANDLE_GL_ENUM
+  }
+
+  return "(unknown)";
+}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/GLDebugUtils.h b/gfx/gl/GLDebugUtils.h
new file mode 100644
index 0000000000..d817d060dd
--- /dev/null
+++ b/gfx/gl/GLDebugUtils.h
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLDEBUGUTILS_H_
+#define GLDEBUGUTILS_H_
+
+#include "GLTypes.h"
+
+namespace mozilla {
+namespace gl {
+
+const char* GLenumToStr(GLenum e);
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // !GLDEBUGUTILS_H_
diff --git a/gfx/gl/GLDefs.h b/gfx/gl/GLDefs.h
new file mode 100644
index 0000000000..56f8031493
--- /dev/null
+++ b/gfx/gl/GLDefs.h
@@ -0,0 +1,110 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#if !defined(LOCALGL_H_)
+#  define LOCALGL_H_
+
+#  include "GLTypes.h"
+#  include "GLConsts.h"
+
+namespace mozilla {
+namespace gl {
+class GLContext;
+bool CheckContextLost(const GLContext* gl);
+}  // namespace gl
+}  // namespace mozilla
+
+#  define MOZ_GL_ASSERT(glContext, expr) \
+    MOZ_ASSERT((expr) || mozilla::gl::CheckContextLost(glContext))
+
+// -
+
+// clang-format off
+
+// TODO: use official constant names instead of followed ones.
+
+// IMG_texture_compression_pvrtc
+#define LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1            0x8C00
+#define LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1            0x8C01
+#define LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1           0x8C02
+#define LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1           0x8C03
+
+// OES_EGL_image_external
+#define LOCAL_GL_TEXTURE_EXTERNAL                       0x8D65
+#define LOCAL_GL_TEXTURE_BINDING_EXTERNAL               0x8D67
+
+// AMD_compressed_ATC_texture
+#define LOCAL_GL_ATC_RGB                                0x8C92
+#define LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA                0x8C93
+#define LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA            0x87EE
+
+// EGL_ANDROID_image_crop
+#define LOCAL_EGL_IMAGE_CROP_LEFT_ANDROID               0x3148
+#define LOCAL_EGL_IMAGE_CROP_TOP_ANDROID                0x3149
+#define LOCAL_EGL_IMAGE_CROP_RIGHT_ANDROID              0x314A
+#define LOCAL_EGL_IMAGE_CROP_BOTTOM_ANDROID             0x314B
+
+// EGL_ANGLE_platform_angle
+#define LOCAL_EGL_PLATFORM_ANGLE_ANGLE                      0x3202
+#define LOCAL_EGL_PLATFORM_ANGLE_TYPE_ANGLE                 0x3203
+#define LOCAL_EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE    0x3204
+#define LOCAL_EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE    0x3205
+#define LOCAL_EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE         0x3206
+#define LOCAL_EGL_PLATFORM_ANGLE_DEBUG_LAYERS_ENABLED_ANGLE 0x3451
+
+// EGL_ANGLE_keyed_mutex
+#define LOCAL_EGL_DXGI_KEYED_MUTEX_ANGLE                     0x33A2
+
+// EGL_ANGLE_stream_producer_d3d_texture
+#define LOCAL_EGL_D3D_TEXTURE_SUBRESOURCE_ID_ANGLE           0x33AB
+
+// EGL_ANGLE_platform_angle_d3d
+#define LOCAL_EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE              0x3207
+#define LOCAL_EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE             0x3208
+#define LOCAL_EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE            0x3209
+#define LOCAL_EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE   0x320A
+#define LOCAL_EGL_PLATFORM_ANGLE_DEVICE_TYPE_WARP_ANGLE       0x320B
+#define LOCAL_EGL_PLATFORM_ANGLE_DEVICE_TYPE_REFERENCE_ANGLE  0x320C
+#define LOCAL_EGL_PLATFORM_ANGLE_ENABLE_AUTOMATIC_TRIM_ANGLE  0x320F
+
+// EGL_ANGLE_d3d_texture_client_buffer
+#define LOCAL_EGL_D3D_TEXTURE_ANGLE                          0x33A3
+
+// EGL_ANGLE_flexible_surface_compatibility
+#define LOCAL_EGL_FLEXIBLE_SURFACE_COMPATIBILITY_SUPPORTED_ANGLE 0x33A6
+
+// EGL_ANGLE_experimental_present_path
+#define LOCAL_EGL_EXPERIMENTAL_PRESENT_PATH_ANGLE             0x33A4
+#define LOCAL_EGL_EXPERIMENTAL_PRESENT_PATH_FAST_ANGLE        0x33A9
+#define LOCAL_EGL_EXPERIMENTAL_PRESENT_PATH_COPY_ANGLE        0x33AA
+
+// EGL_ANGLE_direct3d_display
+#define LOCAL_EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE         ((EGLNativeDisplayType)-2)
+#define LOCAL_EGL_D3D11_ONLY_DISPLAY_ANGLE              ((EGLNativeDisplayType)-3)
+
+// EGL_ANGLE_feature_control
+#define LOCAL_EGL_FEATURE_OVERRIDES_ENABLED_ANGLE       0x3466
+
+// WGL_NV_DX_interop
+#define LOCAL_WGL_ACCESS_READ_ONLY                      0x0000
+#define LOCAL_WGL_ACCESS_READ_WRITE                     0x0001
+#define LOCAL_WGL_ACCESS_WRITE_DISCARD                  0x0002
+
+// Others
+#define LOCAL_EGL_PRESERVED_RESOURCES                   0x3030
+#define LOCAL_EGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_EXT 0x3138
+#define LOCAL_GL_CONTEXT_FLAGS_ARB                      0x2094
+#define LOCAL_GL_CONTEXT_CORE_PROFILE_BIT_ARB           0x00000001
+#define LOCAL_GL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB  0x00000002
+#define LOCAL_GL_CONTEXT_ROBUST_ACCESS_BIT_ARB          0x00000004
+
+// EGL_ANGLE_create_context_backwards_compatible
+#define LOCAL_EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE 0x3483
+
+// EGL_ANGLE_image_d3d11_texture
+#define LOCAL_EGL_D3D11_TEXTURE_ANGLE                   0x3484
+
+// clang-format on
+
+#endif
diff --git a/gfx/gl/GLLibraryEGL.cpp b/gfx/gl/GLLibraryEGL.cpp
new file mode 100644
index 0000000000..4af5e38d1f
--- /dev/null
+++ b/gfx/gl/GLLibraryEGL.cpp
@@ -0,0 +1,1086 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLLibraryEGL.h"
+
+#include "gfxConfig.h"
+#include "gfxCrashReporterUtils.h"
+#include "gfxEnv.h"
+#include "gfxUtils.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/Tokenizer.h"
+#include "mozilla/ScopeExit.h"
+#include "mozilla/StaticPrefs_gfx.h"
+#include "mozilla/StaticPrefs_webgl.h"
+#include "mozilla/Unused.h"
+#include "nsDirectoryServiceDefs.h"
+#include "nsDirectoryServiceUtils.h"
+#include "nsPrintfCString.h"
+#ifdef XP_WIN
+#  include "mozilla/gfx/DeviceManagerDx.h"
+#  include "nsWindowsHelpers.h"
+#  include "prerror.h"
+
+#  include <d3d11.h>
+#endif
+#include "OGLShaderProgram.h"
+#include "prenv.h"
+#include "prsystem.h"
+#include "GLContext.h"
+#include "GLContextProvider.h"
+#include "GLLibraryLoader.h"
+#include "GLReadTexImageHelper.h"
+#include "ScopedGLHelpers.h"
+#ifdef MOZ_WIDGET_GTK
+#  include "mozilla/WidgetUtilsGtk.h"
+#  ifdef MOZ_WAYLAND
+#    include "mozilla/widget/nsWaylandDisplay.h"
+#    include "mozilla/widget/DMABufLibWrapper.h"
+#  endif  // MOZ_WIDGET_GTK
+#  include <gdk/gdk.h>
+#endif  // MOZ_WAYLAND
+
+#include <mutex>  // for call_once
+
+namespace mozilla {
+namespace gl {
+
+StaticMutex GLLibraryEGL::sMutex;
+StaticRefPtr<GLLibraryEGL> GLLibraryEGL::sInstance;
+
+// should match the order of EGLExtensions, and be null-terminated.
+static const char* sEGLLibraryExtensionNames[] = {
+    "EGL_ANDROID_get_native_client_buffer",
+    "EGL_ANGLE_device_creation",
+    "EGL_ANGLE_device_creation_d3d11",
+    "EGL_ANGLE_platform_angle",
+    "EGL_ANGLE_platform_angle_d3d",
+    "EGL_EXT_device_enumeration",
+    "EGL_EXT_device_query",
+    "EGL_EXT_platform_device",
+    "EGL_MESA_platform_surfaceless"};
+
+// should match the order of EGLExtensions, and be null-terminated.
+static const char* sEGLExtensionNames[] = {
+    "EGL_KHR_image_base",
+    "EGL_KHR_image_pixmap",
+    "EGL_KHR_gl_texture_2D_image",
+    "EGL_ANGLE_surface_d3d_texture_2d_share_handle",
+    "EGL_EXT_create_context_robustness",
+    "EGL_KHR_image",
+    "EGL_KHR_fence_sync",
+    "EGL_KHR_wait_sync",
+    "EGL_ANDROID_native_fence_sync",
+    "EGL_ANDROID_image_crop",
+    "EGL_ANGLE_d3d_share_handle_client_buffer",
+    "EGL_KHR_create_context",
+    "EGL_KHR_stream",
+    "EGL_KHR_stream_consumer_gltexture",
+    "EGL_NV_stream_consumer_gltexture_yuv",
+    "EGL_ANGLE_stream_producer_d3d_texture",
+    "EGL_KHR_surfaceless_context",
+    "EGL_KHR_create_context_no_error",
+    "EGL_MOZ_create_context_provoking_vertex_dont_care",
+    "EGL_EXT_swap_buffers_with_damage",
+    "EGL_KHR_swap_buffers_with_damage",
+    "EGL_EXT_buffer_age",
+    "EGL_KHR_partial_update",
+    "EGL_NV_robustness_video_memory_purge",
+    "EGL_EXT_image_dma_buf_import",
+    "EGL_EXT_image_dma_buf_import_modifiers",
+    "EGL_MESA_image_dma_buf_export",
+    "EGL_KHR_no_config_context",
+};
+
+PRLibrary* LoadApitraceLibrary() {
+  const char* path = nullptr;
+
+#ifdef ANDROID
+  // We only need to explicitly dlopen egltrace
+  // on android as we can use LD_PRELOAD or other tricks
+  // on other platforms. We look for it in /data/local
+  // as that's writeable by all users.
+  path = "/data/local/tmp/egltrace.so";
+#endif
+  if (!path) return nullptr;
+
+  // Initialization of gfx prefs here is only needed during the unit tests...
+  if (!StaticPrefs::gfx_apitrace_enabled_AtStartup()) {
+    return nullptr;
+  }
+
+  static PRLibrary* sApitraceLibrary = nullptr;
+  if (sApitraceLibrary) return sApitraceLibrary;
+
+  nsAutoCString logFile;
+  Preferences::GetCString("gfx.apitrace.logfile", logFile);
+  if (logFile.IsEmpty()) {
+    logFile = "firefox.trace";
+  }
+
+  // The firefox process can't write to /data/local, but it can write
+  // to $GRE_HOME/
+  nsAutoCString logPath;
+  logPath.AppendPrintf("%s/%s", getenv("GRE_HOME"), logFile.get());
+
+#ifndef XP_WIN  // Windows is missing setenv and forbids PR_LoadLibrary.
+  // apitrace uses the TRACE_FILE environment variable to determine where
+  // to log trace output to
+  printf_stderr("Logging GL tracing output to %s", logPath.get());
+  setenv("TRACE_FILE", logPath.get(), false);
+
+  printf_stderr("Attempting load of %s\n", path);
+  sApitraceLibrary = PR_LoadLibrary(path);
+#endif
+
+  return sApitraceLibrary;
+}
+
+#ifdef XP_WIN
+// see the comment in GLLibraryEGL::EnsureInitialized() for the rationale here.
+static PRLibrary* LoadLibraryForEGLOnWindows(const nsAString& filename) {
+  nsAutoString path(gfx::gfxVars::GREDirectory());
+  path.Append(PR_GetDirectorySeparator());
+  path.Append(filename);
+
+  PRLibSpec lspec;
+  lspec.type = PR_LibSpec_PathnameU;
+  lspec.value.pathname_u = path.get();
+  PRLibrary* lib = PR_LoadLibraryWithFlags(lspec, PR_LD_LAZY | PR_LD_LOCAL);
+  if (!lib) {
+    gfxCriticalNote << "Failed to load " << path.get() << " " << PR_GetError()
+                    << " " << PR_GetOSError();
+  }
+  return lib;
+}
+
+#endif  // XP_WIN
+
+static std::shared_ptr<EglDisplay> GetAndInitDisplay(
+    GLLibraryEGL& egl, void* displayType,
+    const StaticMutexAutoLock& aProofOfLock) {
+  const auto display = egl.fGetDisplay(displayType);
+  if (!display) return nullptr;
+  return EglDisplay::Create(egl, display, false, aProofOfLock);
+}
+
+#ifdef MOZ_WAYLAND
+static std::shared_ptr<EglDisplay> GetAndInitDeviceDisplay(
+    GLLibraryEGL& egl, const StaticMutexAutoLock& aProofOfLock) {
+  nsAutoCString drmRenderDevice(gfx::gfxVars::DrmRenderDevice());
+  if (drmRenderDevice.IsEmpty() ||
+      !egl.IsExtensionSupported(EGLLibExtension::EXT_platform_device) ||
+      !egl.IsExtensionSupported(EGLLibExtension::EXT_device_enumeration)) {
+    return nullptr;
+  }
+
+  EGLint maxDevices;
+  if (!egl.fQueryDevicesEXT(0, nullptr, &maxDevices)) {
+    return nullptr;
+  }
+
+  std::vector<EGLDeviceEXT> devices(maxDevices);
+  EGLint numDevices;
+  if (!egl.fQueryDevicesEXT(devices.size(), devices.data(), &numDevices)) {
+    return nullptr;
+  }
+  devices.resize(numDevices);
+
+  EGLDisplay display = EGL_NO_DISPLAY;
+  for (const auto& device : devices) {
+    const char* renderNodeString =
+        egl.fQueryDeviceStringEXT(device, LOCAL_EGL_DRM_RENDER_NODE_FILE_EXT);
+    if (renderNodeString &&
+        strcmp(renderNodeString, drmRenderDevice.get()) == 0) {
+      const EGLAttrib attrib_list[] = {LOCAL_EGL_NONE};
+      display = egl.fGetPlatformDisplay(LOCAL_EGL_PLATFORM_DEVICE_EXT, device,
+                                        attrib_list);
+      break;
+    }
+  }
+  if (!display) {
+    return nullptr;
+  }
+
+  return EglDisplay::Create(egl, display, true, aProofOfLock);
+}
+
+static std::shared_ptr<EglDisplay> GetAndInitSoftwareDisplay(
+    GLLibraryEGL& egl, const StaticMutexAutoLock& aProofOfLock) {
+  if (!egl.IsExtensionSupported(EGLLibExtension::EXT_platform_device) ||
+      !egl.IsExtensionSupported(EGLLibExtension::EXT_device_enumeration)) {
+    return nullptr;
+  }
+
+  EGLint maxDevices;
+  if (!egl.fQueryDevicesEXT(0, nullptr, &maxDevices)) {
+    return nullptr;
+  }
+
+  std::vector<EGLDeviceEXT> devices(maxDevices);
+  EGLint numDevices;
+  if (!egl.fQueryDevicesEXT(devices.size(), devices.data(), &numDevices)) {
+    return nullptr;
+  }
+  devices.resize(numDevices);
+
+  EGLDisplay display = EGL_NO_DISPLAY;
+  for (const auto& device : devices) {
+    const char* renderNodeString =
+        egl.fQueryDeviceStringEXT(device, LOCAL_EGL_DRM_RENDER_NODE_FILE_EXT);
+    // We are looking for a device with no file
+    if (!renderNodeString || *renderNodeString == 0) {
+      const EGLAttrib attrib_list[] = {LOCAL_EGL_NONE};
+      display = egl.fGetPlatformDisplay(LOCAL_EGL_PLATFORM_DEVICE_EXT, device,
+                                        attrib_list);
+      break;
+    }
+  }
+  if (!display) {
+    return nullptr;
+  }
+
+  return EglDisplay::Create(egl, display, true, aProofOfLock);
+}
+
+static std::shared_ptr<EglDisplay> GetAndInitSurfacelessDisplay(
+    GLLibraryEGL& egl, const StaticMutexAutoLock& aProofOfLock) {
+  if (!egl.IsExtensionSupported(EGLLibExtension::MESA_platform_surfaceless)) {
+    return nullptr;
+  }
+
+  const EGLAttrib attrib_list[] = {LOCAL_EGL_NONE};
+  const EGLDisplay display = egl.fGetPlatformDisplay(
+      LOCAL_EGL_PLATFORM_SURFACELESS_MESA, EGL_DEFAULT_DISPLAY, attrib_list);
+  if (display == EGL_NO_DISPLAY) {
+    return nullptr;
+  }
+  return EglDisplay::Create(egl, display, true, aProofOfLock);
+}
+#endif
+
+static auto EglDebugLayersEnabled() {
+  EGLAttrib ret = LOCAL_EGL_FALSE;
+  if (StaticPrefs::gfx_direct3d11_enable_debug_layer_AtStartup()) {
+    ret = LOCAL_EGL_TRUE;
+  }
+  return ret;
+}
+
+static std::shared_ptr<EglDisplay> GetAndInitWARPDisplay(
+    GLLibraryEGL& egl, void* displayType,
+    const StaticMutexAutoLock& aProofOfLock) {
+  const EGLAttrib attrib_list[] = {
+      LOCAL_EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE,
+      LOCAL_EGL_PLATFORM_ANGLE_DEVICE_TYPE_WARP_ANGLE,
+      LOCAL_EGL_PLATFORM_ANGLE_DEBUG_LAYERS_ENABLED_ANGLE,
+      EglDebugLayersEnabled(),
+      // Requires:
+      LOCAL_EGL_PLATFORM_ANGLE_TYPE_ANGLE,
+      LOCAL_EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE, LOCAL_EGL_NONE};
+  const EGLDisplay display = egl.fGetPlatformDisplay(
+      LOCAL_EGL_PLATFORM_ANGLE_ANGLE, displayType, attrib_list);
+
+  if (display == EGL_NO_DISPLAY) {
+    const EGLint err = egl.fGetError();
+    if (err != LOCAL_EGL_SUCCESS) {
+      gfxCriticalError() << "Unexpected GL error: " << gfx::hexa(err);
+      MOZ_CRASH("GFX: Unexpected GL error.");
+    }
+    return nullptr;
+  }
+
+  return EglDisplay::Create(egl, display, true, aProofOfLock);
+}
+
+std::shared_ptr<EglDisplay> GLLibraryEGL::CreateDisplay(
+    ID3D11Device* const d3d11Device) {
+  StaticMutexAutoLock lock(sMutex);
+  EGLDeviceEXT eglDevice =
+      fCreateDeviceANGLE(LOCAL_EGL_D3D11_DEVICE_ANGLE, d3d11Device, nullptr);
+  if (!eglDevice) {
+    gfxCriticalNote << "Failed to get EGLDeviceEXT of D3D11Device";
+    return nullptr;
+  }
+  const char* features[] = {"allowES3OnFL10_0", nullptr};
+  // Create an EGLDisplay using the EGLDevice
+  const EGLAttrib attrib_list[] = {LOCAL_EGL_FEATURE_OVERRIDES_ENABLED_ANGLE,
+                                   reinterpret_cast<EGLAttrib>(features),
+                                   LOCAL_EGL_NONE};
+  const auto display = fGetPlatformDisplay(LOCAL_EGL_PLATFORM_DEVICE_EXT,
+                                           eglDevice, attrib_list);
+  if (!display) {
+    gfxCriticalNote << "Failed to get EGLDisplay of D3D11Device";
+    return nullptr;
+  }
+
+  if (!display) {
+    const EGLint err = fGetError();
+    if (err != LOCAL_EGL_SUCCESS) {
+      gfxCriticalError() << "Unexpected GL error: " << gfx::hexa(err);
+      MOZ_CRASH("GFX: Unexpected GL error.");
+    }
+    return nullptr;
+  }
+
+  const auto ret = EglDisplay::Create(*this, display, false, lock);
+
+  if (!ret) {
+    const EGLint err = fGetError();
+    if (err != LOCAL_EGL_SUCCESS) {
+      gfxCriticalError()
+          << "Failed to initialize EGLDisplay for WebRender error: "
+          << gfx::hexa(err);
+    }
+    return nullptr;
+  }
+  return ret;
+}
+
+static bool IsAccelAngleSupported(nsACString* const out_failureId) {
+  if (!gfx::gfxVars::AllowWebglAccelAngle()) {
+    if (out_failureId->IsEmpty()) {
+      *out_failureId = "FEATURE_FAILURE_ACCL_ANGLE_NOT_OK"_ns;
+    }
+    return false;
+  }
+  return true;
+}
+
+class AngleErrorReporting {
+ public:
+  AngleErrorReporting() : mFailureId(nullptr) {
+    // No static constructor
+  }
+
+  void SetFailureId(nsACString* const aFailureId) { mFailureId = aFailureId; }
+
+  void logError(const char* errorMessage) {
+    if (!mFailureId) {
+      return;
+    }
+
+    nsCString str(errorMessage);
+    Tokenizer tokenizer(str);
+
+    // Parse "ANGLE Display::initialize error " << error.getID() << ": "
+    //       << error.getMessage()
+    nsCString currWord;
+    Tokenizer::Token intToken;
+    if (tokenizer.CheckWord("ANGLE") && tokenizer.CheckWhite() &&
+        tokenizer.CheckWord("Display") && tokenizer.CheckChar(':') &&
+        tokenizer.CheckChar(':') && tokenizer.CheckWord("initialize") &&
+        tokenizer.CheckWhite() && tokenizer.CheckWord("error") &&
+        tokenizer.CheckWhite() &&
+        tokenizer.Check(Tokenizer::TOKEN_INTEGER, intToken)) {
+      *mFailureId = "FAILURE_ID_ANGLE_ID_";
+      mFailureId->AppendPrintf("%" PRIu64, intToken.AsInteger());
+    } else {
+      *mFailureId = "FAILURE_ID_ANGLE_UNKNOWN";
+    }
+  }
+
+ private:
+  nsACString* mFailureId;
+};
+
+AngleErrorReporting gAngleErrorReporter;
+
+static std::shared_ptr<EglDisplay> GetAndInitDisplayForAccelANGLE(
+    GLLibraryEGL& egl, nsACString* const out_failureId,
+    const StaticMutexAutoLock& aProofOfLock) {
+  gfx::FeatureState& d3d11ANGLE =
+      gfx::gfxConfig::GetFeature(gfx::Feature::D3D11_HW_ANGLE);
+
+  if (!StaticPrefs::webgl_angle_try_d3d11()) {
+    d3d11ANGLE.UserDisable("User disabled D3D11 ANGLE by pref",
+                           "FAILURE_ID_ANGLE_PREF"_ns);
+  }
+  if (StaticPrefs::webgl_angle_force_d3d11()) {
+    d3d11ANGLE.UserForceEnable(
+        "User force-enabled D3D11 ANGLE on disabled hardware");
+  }
+  gAngleErrorReporter.SetFailureId(out_failureId);
+
+  auto guardShutdown = mozilla::MakeScopeExit([&] {
+    gAngleErrorReporter.SetFailureId(nullptr);
+    // NOTE: Ideally we should be calling ANGLEPlatformShutdown after the
+    //       ANGLE display is destroyed. However gAngleErrorReporter
+    //       will live longer than the ANGLE display so we're fine.
+  });
+
+  if (gfx::gfxConfig::IsForcedOnByUser(gfx::Feature::D3D11_HW_ANGLE)) {
+    return GetAndInitDisplay(egl, LOCAL_EGL_D3D11_ONLY_DISPLAY_ANGLE,
+                             aProofOfLock);
+  }
+
+  std::shared_ptr<EglDisplay> ret;
+  if (d3d11ANGLE.IsEnabled()) {
+    ret = GetAndInitDisplay(egl, LOCAL_EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE,
+                            aProofOfLock);
+  }
+
+  if (!ret) {
+    ret = GetAndInitDisplay(egl, EGL_DEFAULT_DISPLAY, aProofOfLock);
+  }
+
+  if (!ret && out_failureId->IsEmpty()) {
+    *out_failureId = "FEATURE_FAILURE_ACCL_ANGLE_NO_DISP"_ns;
+  }
+
+  return ret;
+}
+
+// -
+
+#if defined(XP_UNIX)
+#  define GLES2_LIB "libGLESv2.so"
+#  define GLES2_LIB2 "libGLESv2.so.2"
+#  define GL_LIB "libGL.so"
+#  define GL_LIB2 "libGL.so.1"
+#elif defined(XP_WIN)
+#  define GLES2_LIB "libGLESv2.dll"
+#else
+#  error "Platform not recognized"
+#endif
+
+Maybe<SymbolLoader> GLLibraryEGL::GetSymbolLoader() const {
+  auto ret = SymbolLoader(mSymbols.fGetProcAddress);
+  ret.mLib = mGLLibrary;
+  return Some(ret);
+}
+
+// -
+
+/* static */
+RefPtr<GLLibraryEGL> GLLibraryEGL::Get(nsACString* const out_failureId) {
+  StaticMutexAutoLock lock(sMutex);
+  if (!sInstance) {
+    sInstance = new GLLibraryEGL;
+    if (NS_WARN_IF(!sInstance->Init(out_failureId))) {
+      sInstance = nullptr;
+    }
+  }
+  return sInstance;
+}
+
+/* static */ void GLLibraryEGL::Shutdown() {
+  StaticMutexAutoLock lock(sMutex);
+  sInstance = nullptr;
+}
+
+bool GLLibraryEGL::Init(nsACString* const out_failureId) {
+  MOZ_RELEASE_ASSERT(!mSymbols.fTerminate);
+
+  mozilla::ScopedGfxFeatureReporter reporter("EGL");
+
+#ifdef XP_WIN
+  if (!mEGLLibrary) {
+    // On Windows, the GLESv2, EGL and DXSDK libraries are shipped with libxul
+    // and we should look for them there. We have to load the libs in this
+    // order, because libEGL.dll depends on libGLESv2.dll which depends on the
+    // DXSDK libraries. This matters especially for WebRT apps which are in a
+    // different directory. See bug 760323 and bug 749459
+
+    // Also note that we intentionally leak the libs we load.
+
+    do {
+      // Windows 8.1+ has d3dcompiler_47.dll in the system directory.
+      // Try it first. Note that _46 will never be in the system
+      // directory. So there is no point trying _46 in the system
+      // directory.
+
+      if (LoadLibrarySystem32(L"d3dcompiler_47.dll")) break;
+
+#  ifdef MOZ_D3DCOMPILER_VISTA_DLL
+      if (LoadLibraryForEGLOnWindows(NS_LITERAL_STRING_FROM_CSTRING(
+              MOZ_STRINGIFY(MOZ_D3DCOMPILER_VISTA_DLL))))
+        break;
+#  endif
+
+      MOZ_ASSERT(false, "d3dcompiler DLL loading failed.");
+    } while (false);
+
+    mGLLibrary = LoadLibraryForEGLOnWindows(u"libGLESv2.dll"_ns);
+
+    mEGLLibrary = LoadLibraryForEGLOnWindows(u"libEGL.dll"_ns);
+  }
+
+#else  // !Windows
+
+  // On non-Windows (Android) we use system copies of libEGL. We look for
+  // the APITrace lib, libEGL.so, and libEGL.so.1 in that order.
+
+#  if defined(ANDROID)
+  if (!mEGLLibrary) mEGLLibrary = LoadApitraceLibrary();
+#  endif
+
+  if (!mEGLLibrary) {
+    mEGLLibrary = PR_LoadLibrary("libEGL.so");
+  }
+#  if defined(XP_UNIX)
+  if (!mEGLLibrary) {
+    mEGLLibrary = PR_LoadLibrary("libEGL.so.1");
+  }
+#  endif
+
+#  ifdef APITRACE_LIB
+  if (!mGLLibrary) {
+    mGLLibrary = PR_LoadLibrary(APITRACE_LIB);
+  }
+#  endif
+
+#  ifdef GL_LIB
+  if (!mGLLibrary) {
+    mGLLibrary = PR_LoadLibrary(GL_LIB);
+  }
+#  endif
+
+#  ifdef GL_LIB2
+  if (!mGLLibrary) {
+    mGLLibrary = PR_LoadLibrary(GL_LIB2);
+  }
+#  endif
+
+  if (!mGLLibrary) {
+    mGLLibrary = PR_LoadLibrary(GLES2_LIB);
+  }
+
+#  ifdef GLES2_LIB2
+  if (!mGLLibrary) {
+    mGLLibrary = PR_LoadLibrary(GLES2_LIB2);
+  }
+#  endif
+
+#endif  // !Windows
+
+  if (!mEGLLibrary || !mGLLibrary) {
+    NS_WARNING("Couldn't load EGL LIB.");
+    *out_failureId = "FEATURE_FAILURE_EGL_LOAD_3"_ns;
+    return false;
+  }
+
+#define SYMBOL(X)                 \
+  {                               \
+    (PRFuncPtr*)&mSymbols.f##X, { \
+      { "egl" #X }                \
+    }                             \
+  }
+#define END_OF_SYMBOLS \
+  {                    \
+    nullptr, {}        \
+  }
+
+  SymLoadStruct earlySymbols[] = {SYMBOL(GetDisplay),
+                                  SYMBOL(Terminate),
+                                  SYMBOL(GetCurrentSurface),
+                                  SYMBOL(GetCurrentContext),
+                                  SYMBOL(MakeCurrent),
+                                  SYMBOL(DestroyContext),
+                                  SYMBOL(CreateContext),
+                                  SYMBOL(DestroySurface),
+                                  SYMBOL(CreateWindowSurface),
+                                  SYMBOL(CreatePbufferSurface),
+                                  SYMBOL(CreatePbufferFromClientBuffer),
+                                  SYMBOL(CreatePixmapSurface),
+                                  SYMBOL(BindAPI),
+                                  SYMBOL(Initialize),
+                                  SYMBOL(ChooseConfig),
+                                  SYMBOL(GetError),
+                                  SYMBOL(GetConfigs),
+                                  SYMBOL(GetConfigAttrib),
+                                  SYMBOL(WaitNative),
+                                  SYMBOL(GetProcAddress),
+                                  SYMBOL(SwapBuffers),
+                                  SYMBOL(CopyBuffers),
+                                  SYMBOL(QueryString),
+                                  SYMBOL(QueryContext),
+                                  SYMBOL(BindTexImage),
+                                  SYMBOL(ReleaseTexImage),
+                                  SYMBOL(SwapInterval),
+                                  SYMBOL(QuerySurface),
+                                  END_OF_SYMBOLS};
+
+  {
+    const SymbolLoader libLoader(*mEGLLibrary);
+    if (!libLoader.LoadSymbols(earlySymbols)) {
+      NS_WARNING(
+          "Couldn't find required entry points in EGL library (early init)");
+      *out_failureId = "FEATURE_FAILURE_EGL_SYM"_ns;
+      return false;
+    }
+  }
+
+  {
+    const char internalFuncName[] =
+        "_Z35eglQueryStringImplementationANDROIDPvi";
+    const auto& internalFunc =
+        PR_FindFunctionSymbol(mEGLLibrary, internalFuncName);
+    if (internalFunc) {
+      *(PRFuncPtr*)&mSymbols.fQueryString = internalFunc;
+    }
+  }
+
+  // -
+
+  InitLibExtensions();
+
+  const SymbolLoader pfnLoader(mSymbols.fGetProcAddress);
+
+  const auto fnLoadSymbols = [&](const SymLoadStruct* symbols) {
+    const bool shouldWarn = gfxEnv::MOZ_GL_SPEW();
+    if (pfnLoader.LoadSymbols(symbols, shouldWarn)) return true;
+
+    ClearSymbols(symbols);
+    return false;
+  };
+
+  // Check the ANGLE support the system has
+  mIsANGLE = IsExtensionSupported(EGLLibExtension::ANGLE_platform_angle);
+
+  // Client exts are ready. (But not display exts!)
+
+  if (mIsANGLE) {
+    MOZ_ASSERT(IsExtensionSupported(EGLLibExtension::ANGLE_platform_angle_d3d));
+    const SymLoadStruct angleSymbols[] = {SYMBOL(GetPlatformDisplay),
+                                          END_OF_SYMBOLS};
+    if (!fnLoadSymbols(angleSymbols)) {
+      gfxCriticalError() << "Failed to load ANGLE symbols!";
+      return false;
+    }
+    MOZ_ASSERT(IsExtensionSupported(EGLLibExtension::ANGLE_platform_angle_d3d));
+    const SymLoadStruct createDeviceSymbols[] = {
+        SYMBOL(CreateDeviceANGLE), SYMBOL(ReleaseDeviceANGLE), END_OF_SYMBOLS};
+    if (!fnLoadSymbols(createDeviceSymbols)) {
+      NS_ERROR(
+          "EGL supports ANGLE_device_creation without exposing its functions!");
+      MarkExtensionUnsupported(EGLLibExtension::ANGLE_device_creation);
+    }
+  }
+
+  // ANDROID_get_native_client_buffer isn't necessarily enumerated in lib exts,
+  // but it is one.
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(GetNativeClientBufferANDROID),
+                                     END_OF_SYMBOLS};
+    if (fnLoadSymbols(symbols)) {
+      mAvailableExtensions[UnderlyingValue(
+          EGLLibExtension::ANDROID_get_native_client_buffer)] = true;
+    }
+  }
+
+  // -
+  // Load possible display ext symbols.
+
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(QuerySurfacePointerANGLE),
+                                     END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {
+        SYMBOL(CreateSyncKHR), SYMBOL(DestroySyncKHR),
+        SYMBOL(ClientWaitSyncKHR), SYMBOL(GetSyncAttribKHR), END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(CreateImageKHR),
+                                     SYMBOL(DestroyImageKHR), END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(WaitSyncKHR), END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(DupNativeFenceFDANDROID),
+                                     END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(CreateStreamKHR),
+                                     SYMBOL(DestroyStreamKHR),
+                                     SYMBOL(QueryStreamKHR), END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(StreamConsumerGLTextureExternalKHR),
+                                     SYMBOL(StreamConsumerAcquireKHR),
+                                     SYMBOL(StreamConsumerReleaseKHR),
+                                     END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {
+        SYMBOL(QueryDisplayAttribEXT), SYMBOL(QueryDeviceAttribEXT),
+        SYMBOL(QueryDeviceStringEXT), END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {
+        SYMBOL(StreamConsumerGLTextureExternalAttribsNV), END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {
+        SYMBOL(CreateStreamProducerD3DTextureANGLE),
+        SYMBOL(StreamPostD3DTextureANGLE), END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {
+        {(PRFuncPtr*)&mSymbols.fSwapBuffersWithDamage,
+         {{"eglSwapBuffersWithDamageEXT"}}},
+        END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {
+        {(PRFuncPtr*)&mSymbols.fSwapBuffersWithDamage,
+         {{"eglSwapBuffersWithDamageKHR"}}},
+        END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {
+        {(PRFuncPtr*)&mSymbols.fSetDamageRegion, {{"eglSetDamageRegionKHR"}}},
+        END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(GetPlatformDisplay),
+                                     END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(ExportDMABUFImageQueryMESA),
+                                     SYMBOL(ExportDMABUFImageMESA),
+                                     END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+  {
+    const SymLoadStruct symbols[] = {SYMBOL(QueryDevicesEXT), END_OF_SYMBOLS};
+    (void)fnLoadSymbols(symbols);
+  }
+
+  return true;
+}
+
+// -
+
+template <size_t N>
+static void MarkExtensions(const char* rawExtString, bool shouldDumpExts,
+                           const char* extType, const char* const (&names)[N],
+                           std::bitset<N>* const out) {
+  MOZ_ASSERT(rawExtString);
+
+  const nsDependentCString extString(rawExtString);
+
+  std::vector<nsCString> extList;
+  SplitByChar(extString, ' ', &extList);
+
+  if (shouldDumpExts) {
+    printf_stderr("%u EGL %s extensions: (*: recognized)\n",
+                  (uint32_t)extList.size(), extType);
+  }
+
+  MarkBitfieldByStrings(extList, shouldDumpExts, names, out);
+}
+
+// -
+
+// static
+std::shared_ptr<EglDisplay> EglDisplay::Create(
+    GLLibraryEGL& lib, const EGLDisplay display, const bool isWarp,
+    const StaticMutexAutoLock& aProofOfLock) {
+  // Retrieve the EglDisplay if it already exists
+  {
+    const auto itr = lib.mActiveDisplays.find(display);
+    if (itr != lib.mActiveDisplays.end()) {
+      const auto ret = itr->second.lock();
+      if (ret) {
+        return ret;
+      }
+    }
+  }
+
+  if (!lib.fInitialize(display, nullptr, nullptr)) {
+    return nullptr;
+  }
+
+  static std::once_flag sMesaLeakFlag;
+  std::call_once(sMesaLeakFlag, MesaMemoryLeakWorkaround);
+
+  const auto ret =
+      std::make_shared<EglDisplay>(PrivateUseOnly{}, lib, display, isWarp);
+  lib.mActiveDisplays.insert({display, ret});
+  return ret;
+}
+
+EglDisplay::EglDisplay(const PrivateUseOnly&, GLLibraryEGL& lib,
+                       const EGLDisplay disp, const bool isWarp)
+    : mLib(&lib), mDisplay(disp), mIsWARP(isWarp) {
+  const bool shouldDumpExts = GLContext::ShouldDumpExts();
+
+  auto rawExtString =
+      (const char*)mLib->fQueryString(mDisplay, LOCAL_EGL_EXTENSIONS);
+  if (!rawExtString) {
+    NS_WARNING("Failed to query EGL display extensions!.");
+    rawExtString = "";
+  }
+  MarkExtensions(rawExtString, shouldDumpExts, "display", sEGLExtensionNames,
+                 &mAvailableExtensions);
+
+  // -
+
+  if (!HasKHRImageBase()) {
+    MarkExtensionUnsupported(EGLExtension::KHR_image_pixmap);
+  }
+
+  if (IsExtensionSupported(EGLExtension::KHR_surfaceless_context)) {
+    const auto vendor =
+        (const char*)mLib->fQueryString(mDisplay, LOCAL_EGL_VENDOR);
+
+    // Bug 1464610: Mali T720 (Amazon Fire 8 HD) claims to support this
+    // extension, but if you actually eglMakeCurrent() with EGL_NO_SURFACE, it
+    // fails to render anything when a real surface is provided later on. We
+    // only have the EGL vendor available here, so just avoid using this
+    // extension on all Mali devices.
+    if (vendor && (strcmp(vendor, "ARM") == 0)) {
+      MarkExtensionUnsupported(EGLExtension::KHR_surfaceless_context);
+    }
+  }
+
+  // ANDROID_native_fence_sync isn't necessarily enumerated in display ext,
+  // but it is one.
+  if (mLib->mSymbols.fDupNativeFenceFDANDROID) {
+    mAvailableExtensions[UnderlyingValue(
+        EGLExtension::ANDROID_native_fence_sync)] = true;
+  }
+}
+
+EglDisplay::~EglDisplay() {
+  StaticMutexAutoLock lock(GLLibraryEGL::sMutex);
+  fTerminate();
+  mLib->mActiveDisplays.erase(mDisplay);
+}
+
+// -
+
+std::shared_ptr<EglDisplay> GLLibraryEGL::DefaultDisplay(
+    nsACString* const out_failureId) {
+  StaticMutexAutoLock lock(sMutex);
+  auto ret = mDefaultDisplay.lock();
+  if (ret) return ret;
+
+  ret = CreateDisplayLocked(false, out_failureId, lock);
+  mDefaultDisplay = ret;
+  return ret;
+}
+
+std::shared_ptr<EglDisplay> GLLibraryEGL::CreateDisplay(
+    const bool forceAccel, nsACString* const out_failureId) {
+  StaticMutexAutoLock lock(sMutex);
+  return CreateDisplayLocked(forceAccel, out_failureId, lock);
+}
+
+std::shared_ptr<EglDisplay> GLLibraryEGL::CreateDisplayLocked(
+    const bool forceAccel, nsACString* const out_failureId,
+    const StaticMutexAutoLock& aProofOfLock) {
+  std::shared_ptr<EglDisplay> ret;
+
+  if (IsExtensionSupported(EGLLibExtension::ANGLE_platform_angle_d3d)) {
+    nsCString accelAngleFailureId;
+    bool accelAngleSupport = IsAccelAngleSupported(&accelAngleFailureId);
+    bool shouldTryAccel = forceAccel || accelAngleSupport;
+    bool shouldTryWARP = !forceAccel;  // Only if ANGLE not supported or fails
+
+    // If WARP preferred, will override ANGLE support
+    if (StaticPrefs::webgl_angle_force_warp()) {
+      shouldTryWARP = true;
+      shouldTryAccel = false;
+      if (accelAngleFailureId.IsEmpty()) {
+        accelAngleFailureId = "FEATURE_FAILURE_FORCE_WARP"_ns;
+      }
+    }
+
+    // Hardware accelerated ANGLE path (supported or force accel)
+    if (shouldTryAccel) {
+      ret = GetAndInitDisplayForAccelANGLE(*this, out_failureId, aProofOfLock);
+    }
+
+    // Report the acceleration status to telemetry
+    if (!ret) {
+      if (accelAngleFailureId.IsEmpty()) {
+        Telemetry::Accumulate(Telemetry::CANVAS_WEBGL_ACCL_FAILURE_ID,
+                              "FEATURE_FAILURE_ACCL_ANGLE_UNKNOWN"_ns);
+      } else {
+        Telemetry::Accumulate(Telemetry::CANVAS_WEBGL_ACCL_FAILURE_ID,
+                              accelAngleFailureId);
+      }
+    } else {
+      Telemetry::Accumulate(Telemetry::CANVAS_WEBGL_ACCL_FAILURE_ID,
+                            "SUCCESS"_ns);
+    }
+
+    // Fallback to a WARP display if ANGLE fails, or if WARP is forced
+    if (!ret && shouldTryWARP) {
+      ret = GetAndInitWARPDisplay(*this, EGL_DEFAULT_DISPLAY, aProofOfLock);
+      if (!ret) {
+        if (out_failureId->IsEmpty()) {
+          *out_failureId = "FEATURE_FAILURE_WARP_FALLBACK"_ns;
+        }
+        NS_ERROR("Fallback WARP context failed to initialize.");
+        return nullptr;
+      }
+    }
+  } else {
+    void* nativeDisplay = EGL_DEFAULT_DISPLAY;
+#ifdef MOZ_WAYLAND
+    if (!ret && !gfx::gfxVars::WebglUseHardware()) {
+      // Initialize a swrast egl device such as llvmpipe
+      ret = GetAndInitSoftwareDisplay(*this, aProofOfLock);
+    }
+    // Initialize the display the normal way
+    if (!ret && !gdk_display_get_default()) {
+      ret = GetAndInitDeviceDisplay(*this, aProofOfLock);
+      if (!ret) {
+        ret = GetAndInitSurfacelessDisplay(*this, aProofOfLock);
+      }
+    } else if (!ret && widget::GdkIsWaylandDisplay()) {
+      // Wayland does not support EGL_DEFAULT_DISPLAY
+      nativeDisplay = widget::WaylandDisplayGetWLDisplay();
+      if (!nativeDisplay) {
+        NS_WARNING("Failed to get wl_display.");
+        return nullptr;
+      }
+    }
+#endif
+    if (!ret) {
+      ret = GetAndInitDisplay(*this, nativeDisplay, aProofOfLock);
+    }
+  }
+
+  if (!ret) {
+    if (out_failureId->IsEmpty()) {
+      *out_failureId = "FEATURE_FAILURE_NO_DISPLAY"_ns;
+    }
+    NS_WARNING("Failed to initialize a display.");
+    return nullptr;
+  }
+
+  return ret;
+}
+
+void GLLibraryEGL::InitLibExtensions() {
+  const bool shouldDumpExts = GLContext::ShouldDumpExts();
+
+  const char* rawExtString = nullptr;
+
+#ifndef ANDROID
+  // Bug 1209612: Crashes on a number of android drivers.
+  // Ideally we would only blocklist this there, but for now we don't need the
+  // client extension list on ANDROID (we mostly need it on ANGLE), and we'd
+  // rather not crash.
+  rawExtString = (const char*)fQueryString(nullptr, LOCAL_EGL_EXTENSIONS);
+#endif
+
+  if (!rawExtString) {
+    if (shouldDumpExts) {
+      printf_stderr("No EGL lib extensions.\n");
+    }
+    return;
+  }
+
+  MarkExtensions(rawExtString, shouldDumpExts, "lib", sEGLLibraryExtensionNames,
+                 &mAvailableExtensions);
+}
+
+void EglDisplay::DumpEGLConfig(EGLConfig cfg) const {
+#define ATTR(_x)                                                     \
+  do {                                                               \
+    int attrval = 0;                                                 \
+    mLib->fGetConfigAttrib(mDisplay, cfg, LOCAL_EGL_##_x, &attrval); \
+    const auto err = mLib->fGetError();                              \
+    if (err != 0x3000) {                                             \
+      printf_stderr("  %s: ERROR (0x%04x)\n", #_x, err);             \
+    } else {                                                         \
+      printf_stderr("  %s: %d (0x%04x)\n", #_x, attrval, attrval);   \
+    }                                                                \
+  } while (0)
+
+  printf_stderr("EGL Config: %d [%p]\n", (int)(intptr_t)cfg, cfg);
+
+  ATTR(BUFFER_SIZE);
+  ATTR(ALPHA_SIZE);
+  ATTR(BLUE_SIZE);
+  ATTR(GREEN_SIZE);
+  ATTR(RED_SIZE);
+  ATTR(DEPTH_SIZE);
+  ATTR(STENCIL_SIZE);
+  ATTR(CONFIG_CAVEAT);
+  ATTR(CONFIG_ID);
+  ATTR(LEVEL);
+  ATTR(MAX_PBUFFER_HEIGHT);
+  ATTR(MAX_PBUFFER_PIXELS);
+  ATTR(MAX_PBUFFER_WIDTH);
+  ATTR(NATIVE_RENDERABLE);
+  ATTR(NATIVE_VISUAL_ID);
+  ATTR(NATIVE_VISUAL_TYPE);
+  ATTR(PRESERVED_RESOURCES);
+  ATTR(SAMPLES);
+  ATTR(SAMPLE_BUFFERS);
+  ATTR(SURFACE_TYPE);
+  ATTR(TRANSPARENT_TYPE);
+  ATTR(TRANSPARENT_RED_VALUE);
+  ATTR(TRANSPARENT_GREEN_VALUE);
+  ATTR(TRANSPARENT_BLUE_VALUE);
+  ATTR(BIND_TO_TEXTURE_RGB);
+  ATTR(BIND_TO_TEXTURE_RGBA);
+  ATTR(MIN_SWAP_INTERVAL);
+  ATTR(MAX_SWAP_INTERVAL);
+  ATTR(LUMINANCE_SIZE);
+  ATTR(ALPHA_MASK_SIZE);
+  ATTR(COLOR_BUFFER_TYPE);
+  ATTR(RENDERABLE_TYPE);
+  ATTR(CONFORMANT);
+
+#undef ATTR
+}
+
+void EglDisplay::DumpEGLConfigs() const {
+  int nc = 0;
+  mLib->fGetConfigs(mDisplay, nullptr, 0, &nc);
+  std::vector<EGLConfig> ec(nc);
+  mLib->fGetConfigs(mDisplay, ec.data(), ec.size(), &nc);
+
+  for (int i = 0; i < nc; ++i) {
+    printf_stderr("========= EGL Config %d ========\n", i);
+    DumpEGLConfig(ec[i]);
+  }
+}
+
+static bool ShouldTrace() {
+  static bool ret = gfxEnv::MOZ_GL_DEBUG_VERBOSE();
+  return ret;
+}
+
+void BeforeEGLCall(const char* glFunction) {
+  if (ShouldTrace()) {
+    printf_stderr("[egl] > %s\n", glFunction);
+  }
+}
+
+void AfterEGLCall(const char* glFunction) {
+  if (ShouldTrace()) {
+    printf_stderr("[egl] < %s\n", glFunction);
+  }
+}
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/GLLibraryEGL.h b/gfx/gl/GLLibraryEGL.h
new file mode 100644
index 0000000000..28f84b27f4
--- /dev/null
+++ b/gfx/gl/GLLibraryEGL.h
@@ -0,0 +1,967 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLLIBRARYEGL_H_
+#define GLLIBRARYEGL_H_
+
+#if defined(MOZ_X11)
+#  include "mozilla/X11Util.h"
+#endif
+
+#include "base/platform_thread.h"  // for PlatformThreadId
+#include "gfxEnv.h"
+#include "GLTypes.h"
+#include "mozilla/EnumTypeTraits.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/StaticMutex.h"
+#include "mozilla/StaticPtr.h"
+#include "nsISupports.h"
+#include "prlink.h"
+
+#include <bitset>
+#include <memory>
+#include <unordered_map>
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "mozilla/ProfilerLabels.h"
+#endif
+
+#if defined(MOZ_X11)
+#  define EGL_DEFAULT_DISPLAY ((EGLNativeDisplayType)mozilla::DefaultXDisplay())
+#else
+#  define EGL_DEFAULT_DISPLAY ((EGLNativeDisplayType)0)
+#endif
+
+struct ID3D11Device;
+
+extern "C" {
+struct AHardwareBuffer;
+}
+
+namespace angle {
+class Platform;
+}
+
+namespace mozilla {
+
+namespace gfx {
+class DataSourceSurface;
+}
+
+namespace gl {
+
+class SymbolLoader;
+
+PRLibrary* LoadApitraceLibrary();
+
+void BeforeEGLCall(const char* funcName);
+void AfterEGLCall(const char* funcName);
+
+class EglDisplay;
+/**
+ * Known GL extensions that can be queried by
+ * IsExtensionSupported.  The results of this are cached, and as
+ * such it's safe to use this even in performance critical code.
+ * If you add to this array, remember to add to the string names
+ * in GLLibraryEGL.cpp.
+ */
+enum class EGLLibExtension {
+  ANDROID_get_native_client_buffer,
+  ANGLE_device_creation,
+  ANGLE_device_creation_d3d11,
+  ANGLE_platform_angle,
+  ANGLE_platform_angle_d3d,
+  EXT_device_enumeration,
+  EXT_device_query,
+  EXT_platform_device,
+  MESA_platform_surfaceless,
+  Max
+};
+
+/**
+ * Known GL extensions that can be queried by
+ * IsExtensionSupported.  The results of this are cached, and as
+ * such it's safe to use this even in performance critical code.
+ * If you add to this array, remember to add to the string names
+ * in GLLibraryEGL.cpp.
+ */
+enum class EGLExtension {
+  KHR_image_base,
+  KHR_image_pixmap,
+  KHR_gl_texture_2D_image,
+  ANGLE_surface_d3d_texture_2d_share_handle,
+  EXT_create_context_robustness,
+  KHR_image,
+  KHR_fence_sync,
+  KHR_wait_sync,
+  ANDROID_native_fence_sync,
+  EGL_ANDROID_image_crop,
+  ANGLE_d3d_share_handle_client_buffer,
+  KHR_create_context,
+  KHR_stream,
+  KHR_stream_consumer_gltexture,
+  NV_stream_consumer_gltexture_yuv,
+  ANGLE_stream_producer_d3d_texture,
+  KHR_surfaceless_context,
+  KHR_create_context_no_error,
+  MOZ_create_context_provoking_vertex_dont_care,
+  EXT_swap_buffers_with_damage,
+  KHR_swap_buffers_with_damage,
+  EXT_buffer_age,
+  KHR_partial_update,
+  NV_robustness_video_memory_purge,
+  EXT_image_dma_buf_import,
+  EXT_image_dma_buf_import_modifiers,
+  MESA_image_dma_buf_export,
+  KHR_no_config_context,
+  Max
+};
+
+// -
+
+class GLLibraryEGL final {
+  friend class EglDisplay;
+
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(GLLibraryEGL)
+
+ private:
+  PRLibrary* mEGLLibrary = nullptr;
+  PRLibrary* mGLLibrary = nullptr;
+  bool mIsANGLE = false;
+  std::bitset<UnderlyingValue(EGLLibExtension::Max)> mAvailableExtensions;
+  std::weak_ptr<EglDisplay> mDefaultDisplay;
+  std::unordered_map<EGLDisplay, std::weak_ptr<EglDisplay>> mActiveDisplays;
+
+ public:
+  static RefPtr<GLLibraryEGL> Get(nsACString* const out_failureId);
+  static void Shutdown();
+
+ private:
+  ~GLLibraryEGL() = default;
+
+  static StaticMutex sMutex;
+  static StaticRefPtr<GLLibraryEGL> sInstance MOZ_GUARDED_BY(sMutex);
+
+  bool Init(nsACString* const out_failureId);
+  void InitLibExtensions();
+
+  std::shared_ptr<EglDisplay> CreateDisplayLocked(
+      bool forceAccel, nsACString* const out_failureId,
+      const StaticMutexAutoLock& aProofOfLock);
+
+ public:
+  Maybe<SymbolLoader> GetSymbolLoader() const;
+
+  std::shared_ptr<EglDisplay> CreateDisplay(bool forceAccel,
+                                            nsACString* const out_failureId);
+  std::shared_ptr<EglDisplay> CreateDisplay(ID3D11Device*);
+  std::shared_ptr<EglDisplay> DefaultDisplay(nsACString* const out_failureId);
+
+  bool IsExtensionSupported(EGLLibExtension aKnownExtension) const {
+    return mAvailableExtensions[UnderlyingValue(aKnownExtension)];
+  }
+
+  void MarkExtensionUnsupported(EGLLibExtension aKnownExtension) {
+    mAvailableExtensions[UnderlyingValue(aKnownExtension)] = false;
+  }
+
+  bool IsANGLE() const { return mIsANGLE; }
+
+  // -
+  // PFN wrappers
+
+#ifdef MOZ_WIDGET_ANDROID
+#  define PROFILE_CALL AUTO_PROFILER_LABEL(__func__, GRAPHICS);
+#else
+#  define PROFILE_CALL
+#endif
+
+#ifndef MOZ_FUNCTION_NAME
+#  ifdef __GNUC__
+#    define MOZ_FUNCTION_NAME __PRETTY_FUNCTION__
+#  elif defined(_MSC_VER)
+#    define MOZ_FUNCTION_NAME __FUNCTION__
+#  else
+#    define MOZ_FUNCTION_NAME \
+      __func__  // defined in C99, supported in various C++ compilers. Just raw
+                // function name.
+#  endif
+#endif
+
+#ifdef DEBUG
+#  define BEFORE_CALL BeforeEGLCall(MOZ_FUNCTION_NAME);
+#  define AFTER_CALL AfterEGLCall(MOZ_FUNCTION_NAME);
+#else
+#  define BEFORE_CALL
+#  define AFTER_CALL
+#endif
+
+#define WRAP(X)                \
+  PROFILE_CALL                 \
+  BEFORE_CALL                  \
+  const auto ret = mSymbols.X; \
+  AFTER_CALL                   \
+  return ret
+
+ public:
+  EGLDisplay fGetDisplay(void* display_id) const {
+    WRAP(fGetDisplay(display_id));
+  }
+
+  EGLDisplay fGetPlatformDisplay(EGLenum platform, void* native_display,
+                                 const EGLAttrib* attrib_list) const {
+    WRAP(fGetPlatformDisplay(platform, native_display, attrib_list));
+  }
+
+  EGLSurface fGetCurrentSurface(EGLint id) const {
+    WRAP(fGetCurrentSurface(id));
+  }
+
+  EGLContext fGetCurrentContext() const { WRAP(fGetCurrentContext()); }
+
+  EGLBoolean fBindAPI(EGLenum api) const { WRAP(fBindAPI(api)); }
+
+  EGLint fGetError() const { WRAP(fGetError()); }
+
+  EGLBoolean fWaitNative(EGLint engine) const { WRAP(fWaitNative(engine)); }
+
+  EGLCastToRelevantPtr fGetProcAddress(const char* procname) const {
+    WRAP(fGetProcAddress(procname));
+  }
+
+  // ANGLE_device_creation
+  EGLDeviceEXT fCreateDeviceANGLE(EGLint device_type, void* native_device,
+                                  const EGLAttrib* attrib_list) const {
+    WRAP(fCreateDeviceANGLE(device_type, native_device, attrib_list));
+  }
+
+  EGLBoolean fReleaseDeviceANGLE(EGLDeviceEXT device) {
+    WRAP(fReleaseDeviceANGLE(device));
+  }
+
+  // ANDROID_get_native_client_buffer
+  EGLClientBuffer fGetNativeClientBufferANDROID(
+      const struct AHardwareBuffer* buffer) {
+    WRAP(fGetNativeClientBufferANDROID(buffer));
+  }
+
+ private:
+  EGLBoolean fTerminate(EGLDisplay display) const { WRAP(fTerminate(display)); }
+
+  // -
+
+  mutable Mutex mMutex = Mutex{"GLLibraryEGL::mMutex"};
+  mutable std::unordered_map<EGLContext, PlatformThreadId>
+      mOwningThreadByContext MOZ_GUARDED_BY(mMutex);
+
+  EGLBoolean fMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read,
+                          EGLContext ctx) const {
+    const bool CHECK_CONTEXT_OWNERSHIP = true;
+    if (CHECK_CONTEXT_OWNERSHIP) {
+      const MutexAutoLock lock(mMutex);
+
+      const auto tid = PlatformThread::CurrentId();
+      const auto prevCtx = fGetCurrentContext();
+
+      if (prevCtx) {
+        mOwningThreadByContext[prevCtx] = 0;
+      }
+      if (ctx) {
+        auto& ctxOwnerThread = mOwningThreadByContext[ctx];
+        if (ctxOwnerThread && ctxOwnerThread != tid) {
+          gfxCriticalError()
+              << "EGLContext#" << ctx << " is owned by/Current on"
+              << " thread#" << ctxOwnerThread << " but MakeCurrent requested on"
+              << " thread#" << tid << "!";
+          if (gfxEnv::MOZ_EGL_RELEASE_ASSERT_CONTEXT_OWNERSHIP()) {
+            MOZ_CRASH("MOZ_EGL_RELEASE_ASSERT_CONTEXT_OWNERSHIP");
+          }
+          return false;
+        }
+        ctxOwnerThread = tid;
+      }
+    }
+
+    WRAP(fMakeCurrent(dpy, draw, read, ctx));
+  }
+
+  // -
+
+  EGLBoolean fDestroyContext(EGLDisplay dpy, EGLContext ctx) const {
+    {
+      const MutexAutoLock lock(mMutex);
+      mOwningThreadByContext.erase(ctx);
+    }
+
+    WRAP(fDestroyContext(dpy, ctx));
+  }
+
+  EGLContext fCreateContext(EGLDisplay dpy, EGLConfig config,
+                            EGLContext share_context,
+                            const EGLint* attrib_list) const {
+    WRAP(fCreateContext(dpy, config, share_context, attrib_list));
+  }
+
+  EGLBoolean fDestroySurface(EGLDisplay dpy, EGLSurface surface) const {
+    WRAP(fDestroySurface(dpy, surface));
+  }
+
+ public:
+  EGLSurface fCreateWindowSurface(EGLDisplay dpy, EGLConfig config,
+                                  EGLNativeWindowType win,
+                                  const EGLint* attrib_list) const {
+    WRAP(fCreateWindowSurface(dpy, config, win, attrib_list));
+  }
+
+ private:
+  EGLSurface fCreatePbufferSurface(EGLDisplay dpy, EGLConfig config,
+                                   const EGLint* attrib_list) const {
+    WRAP(fCreatePbufferSurface(dpy, config, attrib_list));
+  }
+
+  EGLSurface fCreatePbufferFromClientBuffer(EGLDisplay dpy, EGLenum buftype,
+                                            EGLClientBuffer buffer,
+                                            EGLConfig config,
+                                            const EGLint* attrib_list) const {
+    WRAP(fCreatePbufferFromClientBuffer(dpy, buftype, buffer, config,
+                                        attrib_list));
+  }
+
+  EGLSurface fCreatePixmapSurface(EGLDisplay dpy, EGLConfig config,
+                                  EGLNativePixmapType pixmap,
+                                  const EGLint* attrib_list) const {
+    WRAP(fCreatePixmapSurface(dpy, config, pixmap, attrib_list));
+  }
+
+  EGLBoolean fInitialize(EGLDisplay dpy, EGLint* major, EGLint* minor) const {
+    WRAP(fInitialize(dpy, major, minor));
+  }
+
+  EGLBoolean fChooseConfig(EGLDisplay dpy, const EGLint* attrib_list,
+                           EGLConfig* configs, EGLint config_size,
+                           EGLint* num_config) const {
+    WRAP(fChooseConfig(dpy, attrib_list, configs, config_size, num_config));
+  }
+
+  EGLBoolean fGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
+                              EGLint attribute, EGLint* value) const {
+    WRAP(fGetConfigAttrib(dpy, config, attribute, value));
+  }
+
+  EGLBoolean fGetConfigs(EGLDisplay dpy, EGLConfig* configs, EGLint config_size,
+                         EGLint* num_config) const {
+    WRAP(fGetConfigs(dpy, configs, config_size, num_config));
+  }
+
+  EGLBoolean fSwapBuffers(EGLDisplay dpy, EGLSurface surface) const {
+    WRAP(fSwapBuffers(dpy, surface));
+  }
+
+  EGLBoolean fCopyBuffers(EGLDisplay dpy, EGLSurface surface,
+                          EGLNativePixmapType target) const {
+    WRAP(fCopyBuffers(dpy, surface, target));
+  }
+
+ public:
+  const GLubyte* fQueryString(EGLDisplay dpy, EGLint name) const {
+    WRAP(fQueryString(dpy, name));
+  }
+
+ private:
+  EGLBoolean fQueryContext(EGLDisplay dpy, EGLContext ctx, EGLint attribute,
+                           EGLint* value) const {
+    WRAP(fQueryContext(dpy, ctx, attribute, value));
+  }
+
+  EGLBoolean fBindTexImage(EGLDisplay dpy, EGLSurface surface,
+                           EGLint buffer) const {
+    WRAP(fBindTexImage(dpy, surface, buffer));
+  }
+
+  EGLBoolean fReleaseTexImage(EGLDisplay dpy, EGLSurface surface,
+                              EGLint buffer) const {
+    WRAP(fReleaseTexImage(dpy, surface, buffer));
+  }
+
+  EGLBoolean fSwapInterval(EGLDisplay dpy, EGLint interval) const {
+    WRAP(fSwapInterval(dpy, interval));
+  }
+
+  EGLImage fCreateImage(EGLDisplay dpy, EGLContext ctx, EGLenum target,
+                        EGLClientBuffer buffer,
+                        const EGLint* attrib_list) const {
+    WRAP(fCreateImageKHR(dpy, ctx, target, buffer, attrib_list));
+  }
+
+  EGLBoolean fDestroyImage(EGLDisplay dpy, EGLImage image) const {
+    WRAP(fDestroyImageKHR(dpy, image));
+  }
+
+  EGLBoolean fQuerySurface(EGLDisplay dpy, EGLSurface surface, EGLint attribute,
+                           EGLint* value) const {
+    WRAP(fQuerySurface(dpy, surface, attribute, value));
+  }
+
+  EGLBoolean fQuerySurfacePointerANGLE(EGLDisplay dpy, EGLSurface surface,
+                                       EGLint attribute, void** value) const {
+    WRAP(fQuerySurfacePointerANGLE(dpy, surface, attribute, value));
+  }
+
+  EGLSync fCreateSync(EGLDisplay dpy, EGLenum type,
+                      const EGLint* attrib_list) const {
+    WRAP(fCreateSyncKHR(dpy, type, attrib_list));
+  }
+
+  EGLBoolean fDestroySync(EGLDisplay dpy, EGLSync sync) const {
+    WRAP(fDestroySyncKHR(dpy, sync));
+  }
+
+  EGLint fClientWaitSync(EGLDisplay dpy, EGLSync sync, EGLint flags,
+                         EGLTime timeout) const {
+    WRAP(fClientWaitSyncKHR(dpy, sync, flags, timeout));
+  }
+
+  EGLBoolean fGetSyncAttrib(EGLDisplay dpy, EGLSync sync, EGLint attribute,
+                            EGLint* value) const {
+    WRAP(fGetSyncAttribKHR(dpy, sync, attribute, value));
+  }
+
+  EGLint fWaitSync(EGLDisplay dpy, EGLSync sync, EGLint flags) const {
+    WRAP(fWaitSyncKHR(dpy, sync, flags));
+  }
+
+  EGLint fDupNativeFenceFDANDROID(EGLDisplay dpy, EGLSync sync) const {
+    WRAP(fDupNativeFenceFDANDROID(dpy, sync));
+  }
+
+  // KHR_stream
+  EGLStreamKHR fCreateStreamKHR(EGLDisplay dpy,
+                                const EGLint* attrib_list) const {
+    WRAP(fCreateStreamKHR(dpy, attrib_list));
+  }
+
+  EGLBoolean fDestroyStreamKHR(EGLDisplay dpy, EGLStreamKHR stream) const {
+    WRAP(fDestroyStreamKHR(dpy, stream));
+  }
+
+  EGLBoolean fQueryStreamKHR(EGLDisplay dpy, EGLStreamKHR stream,
+                             EGLenum attribute, EGLint* value) const {
+    WRAP(fQueryStreamKHR(dpy, stream, attribute, value));
+  }
+
+  // KHR_stream_consumer_gltexture
+  EGLBoolean fStreamConsumerGLTextureExternalKHR(EGLDisplay dpy,
+                                                 EGLStreamKHR stream) const {
+    WRAP(fStreamConsumerGLTextureExternalKHR(dpy, stream));
+  }
+
+  EGLBoolean fStreamConsumerAcquireKHR(EGLDisplay dpy,
+                                       EGLStreamKHR stream) const {
+    WRAP(fStreamConsumerAcquireKHR(dpy, stream));
+  }
+
+  EGLBoolean fStreamConsumerReleaseKHR(EGLDisplay dpy,
+                                       EGLStreamKHR stream) const {
+    WRAP(fStreamConsumerReleaseKHR(dpy, stream));
+  }
+
+  // EXT_device_query
+  EGLBoolean fQueryDisplayAttribEXT(EGLDisplay dpy, EGLint attribute,
+                                    EGLAttrib* value) const {
+    WRAP(fQueryDisplayAttribEXT(dpy, attribute, value));
+  }
+
+ public:
+  EGLBoolean fQueryDeviceAttribEXT(EGLDeviceEXT device, EGLint attribute,
+                                   EGLAttrib* value) const {
+    WRAP(fQueryDeviceAttribEXT(device, attribute, value));
+  }
+
+  const char* fQueryDeviceStringEXT(EGLDeviceEXT device, EGLint name) {
+    WRAP(fQueryDeviceStringEXT(device, name));
+  }
+
+ private:
+  // NV_stream_consumer_gltexture_yuv
+  EGLBoolean fStreamConsumerGLTextureExternalAttribsNV(
+      EGLDisplay dpy, EGLStreamKHR stream, const EGLAttrib* attrib_list) const {
+    WRAP(fStreamConsumerGLTextureExternalAttribsNV(dpy, stream, attrib_list));
+  }
+
+  // ANGLE_stream_producer_d3d_texture
+  EGLBoolean fCreateStreamProducerD3DTextureANGLE(
+      EGLDisplay dpy, EGLStreamKHR stream, const EGLAttrib* attrib_list) const {
+    WRAP(fCreateStreamProducerD3DTextureANGLE(dpy, stream, attrib_list));
+  }
+
+  EGLBoolean fStreamPostD3DTextureANGLE(EGLDisplay dpy, EGLStreamKHR stream,
+                                        void* texture,
+                                        const EGLAttrib* attrib_list) const {
+    WRAP(fStreamPostD3DTextureANGLE(dpy, stream, texture, attrib_list));
+  }
+
+  // EGL_EXT_swap_buffers_with_damage / EGL_KHR_swap_buffers_with_damage
+  EGLBoolean fSwapBuffersWithDamage(EGLDisplay dpy, EGLSurface surface,
+                                    const EGLint* rects, EGLint n_rects) {
+    WRAP(fSwapBuffersWithDamage(dpy, surface, rects, n_rects));
+  }
+
+  // EGL_KHR_partial_update
+  EGLBoolean fSetDamageRegion(EGLDisplay dpy, EGLSurface surface,
+                              const EGLint* rects, EGLint n_rects) {
+    WRAP(fSetDamageRegion(dpy, surface, rects, n_rects));
+  }
+  // EGL_MESA_image_dma_buf_export
+  EGLBoolean fExportDMABUFImageQuery(EGLDisplay dpy, EGLImage image,
+                                     int* fourcc, int* num_planes,
+                                     uint64_t* modifiers) {
+    WRAP(
+        fExportDMABUFImageQueryMESA(dpy, image, fourcc, num_planes, modifiers));
+  }
+  EGLBoolean fExportDMABUFImage(EGLDisplay dpy, EGLImage image, int* fds,
+                                EGLint* strides, EGLint* offsets) {
+    WRAP(fExportDMABUFImageMESA(dpy, image, fds, strides, offsets));
+  }
+
+ public:
+  // EGL_EXT_device_enumeration
+  EGLBoolean fQueryDevicesEXT(EGLint max_devices, EGLDeviceEXT* devices,
+                              EGLint* num_devices) {
+    WRAP(fQueryDevicesEXT(max_devices, devices, num_devices));
+  }
+
+#undef WRAP
+
+#undef WRAP
+#undef PROFILE_CALL
+#undef BEFORE_CALL
+#undef AFTER_CALL
+#undef MOZ_FUNCTION_NAME
+
+  ////
+
+ private:
+  struct {
+    EGLCastToRelevantPtr(GLAPIENTRY* fGetProcAddress)(const char* procname);
+    EGLDisplay(GLAPIENTRY* fGetDisplay)(void* display_id);
+    EGLDisplay(GLAPIENTRY* fGetPlatformDisplay)(EGLenum platform,
+                                                void* native_display,
+                                                const EGLAttrib* attrib_list);
+    EGLBoolean(GLAPIENTRY* fTerminate)(EGLDisplay dpy);
+    EGLSurface(GLAPIENTRY* fGetCurrentSurface)(EGLint);
+    EGLContext(GLAPIENTRY* fGetCurrentContext)(void);
+    EGLBoolean(GLAPIENTRY* fMakeCurrent)(EGLDisplay dpy, EGLSurface draw,
+                                         EGLSurface read, EGLContext ctx);
+    EGLBoolean(GLAPIENTRY* fDestroyContext)(EGLDisplay dpy, EGLContext ctx);
+    EGLContext(GLAPIENTRY* fCreateContext)(EGLDisplay dpy, EGLConfig config,
+                                           EGLContext share_context,
+                                           const EGLint* attrib_list);
+    EGLBoolean(GLAPIENTRY* fDestroySurface)(EGLDisplay dpy, EGLSurface surface);
+    EGLSurface(GLAPIENTRY* fCreateWindowSurface)(EGLDisplay dpy,
+                                                 EGLConfig config,
+                                                 EGLNativeWindowType win,
+                                                 const EGLint* attrib_list);
+    EGLSurface(GLAPIENTRY* fCreatePbufferSurface)(EGLDisplay dpy,
+                                                  EGLConfig config,
+                                                  const EGLint* attrib_list);
+    EGLSurface(GLAPIENTRY* fCreatePbufferFromClientBuffer)(
+        EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
+        EGLConfig config, const EGLint* attrib_list);
+    EGLSurface(GLAPIENTRY* fCreatePixmapSurface)(EGLDisplay dpy,
+                                                 EGLConfig config,
+                                                 EGLNativePixmapType pixmap,
+                                                 const EGLint* attrib_list);
+    EGLBoolean(GLAPIENTRY* fBindAPI)(EGLenum api);
+    EGLBoolean(GLAPIENTRY* fInitialize)(EGLDisplay dpy, EGLint* major,
+                                        EGLint* minor);
+    EGLBoolean(GLAPIENTRY* fChooseConfig)(EGLDisplay dpy,
+                                          const EGLint* attrib_list,
+                                          EGLConfig* configs,
+                                          EGLint config_size,
+                                          EGLint* num_config);
+    EGLint(GLAPIENTRY* fGetError)(void);
+    EGLBoolean(GLAPIENTRY* fGetConfigAttrib)(EGLDisplay dpy, EGLConfig config,
+                                             EGLint attribute, EGLint* value);
+    EGLBoolean(GLAPIENTRY* fGetConfigs)(EGLDisplay dpy, EGLConfig* configs,
+                                        EGLint config_size, EGLint* num_config);
+    EGLBoolean(GLAPIENTRY* fWaitNative)(EGLint engine);
+    EGLBoolean(GLAPIENTRY* fSwapBuffers)(EGLDisplay dpy, EGLSurface surface);
+    EGLBoolean(GLAPIENTRY* fCopyBuffers)(EGLDisplay dpy, EGLSurface surface,
+                                         EGLNativePixmapType target);
+    const GLubyte*(GLAPIENTRY* fQueryString)(EGLDisplay, EGLint name);
+    EGLBoolean(GLAPIENTRY* fQueryContext)(EGLDisplay dpy, EGLContext ctx,
+                                          EGLint attribute, EGLint* value);
+    EGLBoolean(GLAPIENTRY* fBindTexImage)(EGLDisplay, EGLSurface surface,
+                                          EGLint buffer);
+    EGLBoolean(GLAPIENTRY* fReleaseTexImage)(EGLDisplay, EGLSurface surface,
+                                             EGLint buffer);
+    EGLBoolean(GLAPIENTRY* fSwapInterval)(EGLDisplay dpy, EGLint interval);
+    EGLImage(GLAPIENTRY* fCreateImageKHR)(EGLDisplay dpy, EGLContext ctx,
+                                          EGLenum target,
+                                          EGLClientBuffer buffer,
+                                          const EGLint* attrib_list);
+    EGLBoolean(GLAPIENTRY* fDestroyImageKHR)(EGLDisplay dpy, EGLImage image);
+    EGLBoolean(GLAPIENTRY* fQuerySurface)(EGLDisplay dpy, EGLSurface surface,
+                                          EGLint attribute, EGLint* value);
+    EGLBoolean(GLAPIENTRY* fQuerySurfacePointerANGLE)(EGLDisplay dpy,
+                                                      EGLSurface surface,
+                                                      EGLint attribute,
+                                                      void** value);
+    EGLSync(GLAPIENTRY* fCreateSyncKHR)(EGLDisplay dpy, EGLenum type,
+                                        const EGLint* attrib_list);
+    EGLBoolean(GLAPIENTRY* fDestroySyncKHR)(EGLDisplay dpy, EGLSync sync);
+    EGLint(GLAPIENTRY* fClientWaitSyncKHR)(EGLDisplay dpy, EGLSync sync,
+                                           EGLint flags, EGLTime timeout);
+    EGLBoolean(GLAPIENTRY* fGetSyncAttribKHR)(EGLDisplay dpy, EGLSync sync,
+                                              EGLint attribute, EGLint* value);
+    EGLint(GLAPIENTRY* fWaitSyncKHR)(EGLDisplay dpy, EGLSync sync,
+                                     EGLint flags);
+    EGLint(GLAPIENTRY* fDupNativeFenceFDANDROID)(EGLDisplay dpy, EGLSync sync);
+    // KHR_stream
+    EGLStreamKHR(GLAPIENTRY* fCreateStreamKHR)(EGLDisplay dpy,
+                                               const EGLint* attrib_list);
+    EGLBoolean(GLAPIENTRY* fDestroyStreamKHR)(EGLDisplay dpy,
+                                              EGLStreamKHR stream);
+    EGLBoolean(GLAPIENTRY* fQueryStreamKHR)(EGLDisplay dpy, EGLStreamKHR stream,
+                                            EGLenum attribute, EGLint* value);
+    // KHR_stream_consumer_gltexture
+    EGLBoolean(GLAPIENTRY* fStreamConsumerGLTextureExternalKHR)(
+        EGLDisplay dpy, EGLStreamKHR stream);
+    EGLBoolean(GLAPIENTRY* fStreamConsumerAcquireKHR)(EGLDisplay dpy,
+                                                      EGLStreamKHR stream);
+    EGLBoolean(GLAPIENTRY* fStreamConsumerReleaseKHR)(EGLDisplay dpy,
+                                                      EGLStreamKHR stream);
+    // EXT_device_query
+    EGLBoolean(GLAPIENTRY* fQueryDisplayAttribEXT)(EGLDisplay dpy,
+                                                   EGLint attribute,
+                                                   EGLAttrib* value);
+    EGLBoolean(GLAPIENTRY* fQueryDeviceAttribEXT)(EGLDeviceEXT device,
+                                                  EGLint attribute,
+                                                  EGLAttrib* value);
+    const char*(GLAPIENTRY* fQueryDeviceStringEXT)(EGLDeviceEXT device,
+                                                   EGLint name);
+
+    // NV_stream_consumer_gltexture_yuv
+    EGLBoolean(GLAPIENTRY* fStreamConsumerGLTextureExternalAttribsNV)(
+        EGLDisplay dpy, EGLStreamKHR stream, const EGLAttrib* attrib_list);
+    // ANGLE_stream_producer_d3d_texture
+    EGLBoolean(GLAPIENTRY* fCreateStreamProducerD3DTextureANGLE)(
+        EGLDisplay dpy, EGLStreamKHR stream, const EGLAttrib* attrib_list);
+    EGLBoolean(GLAPIENTRY* fStreamPostD3DTextureANGLE)(
+        EGLDisplay dpy, EGLStreamKHR stream, void* texture,
+        const EGLAttrib* attrib_list);
+    // ANGLE_device_creation
+    EGLDeviceEXT(GLAPIENTRY* fCreateDeviceANGLE)(EGLint device_type,
+                                                 void* native_device,
+                                                 const EGLAttrib* attrib_list);
+    EGLBoolean(GLAPIENTRY* fReleaseDeviceANGLE)(EGLDeviceEXT device);
+    // EGL_EXT_swap_buffers_with_damage / EGL_KHR_swap_buffers_with_damage
+    EGLBoolean(GLAPIENTRY* fSwapBuffersWithDamage)(EGLDisplay dpy,
+                                                   EGLSurface surface,
+                                                   const EGLint* rects,
+                                                   EGLint n_rects);
+    // EGL_KHR_partial_update
+    EGLBoolean(GLAPIENTRY* fSetDamageRegion)(EGLDisplay dpy, EGLSurface surface,
+                                             const EGLint* rects,
+                                             EGLint n_rects);
+    EGLClientBuffer(GLAPIENTRY* fGetNativeClientBufferANDROID)(
+        const struct AHardwareBuffer* buffer);
+
+    // EGL_MESA_image_dma_buf_export
+    EGLBoolean(GLAPIENTRY* fExportDMABUFImageQueryMESA)(EGLDisplay dpy,
+                                                        EGLImage image,
+                                                        int* fourcc,
+                                                        int* num_planes,
+                                                        uint64_t* modifiers);
+    EGLBoolean(GLAPIENTRY* fExportDMABUFImageMESA)(EGLDisplay dpy,
+                                                   EGLImage image, int* fds,
+                                                   EGLint* strides,
+                                                   EGLint* offsets);
+
+    EGLBoolean(GLAPIENTRY* fQueryDevicesEXT)(EGLint max_devices,
+                                             EGLDeviceEXT* devices,
+                                             EGLint* num_devices);
+
+  } mSymbols = {};
+};
+
+class EglDisplay final {
+ public:
+  const RefPtr<GLLibraryEGL> mLib;
+  const EGLDisplay mDisplay;
+  const bool mIsWARP;
+
+ private:
+  std::bitset<UnderlyingValue(EGLExtension::Max)> mAvailableExtensions;
+
+  struct PrivateUseOnly final {};
+
+ public:
+  static std::shared_ptr<EglDisplay> Create(
+      GLLibraryEGL&, EGLDisplay, bool isWarp,
+      const StaticMutexAutoLock& aProofOfLock);
+
+  // Only `public` for make_shared.
+  EglDisplay(const PrivateUseOnly&, GLLibraryEGL&, EGLDisplay, bool isWarp);
+
+ public:
+  ~EglDisplay();
+
+  bool IsExtensionSupported(EGLExtension aKnownExtension) const {
+    return mAvailableExtensions[UnderlyingValue(aKnownExtension)];
+  }
+
+  void MarkExtensionUnsupported(EGLExtension aKnownExtension) {
+    mAvailableExtensions[UnderlyingValue(aKnownExtension)] = false;
+  }
+
+  void DumpEGLConfig(EGLConfig) const;
+  void DumpEGLConfigs() const;
+
+  void Shutdown();
+
+  // -
+
+  bool HasKHRImageBase() const {
+    return IsExtensionSupported(EGLExtension::KHR_image) ||
+           IsExtensionSupported(EGLExtension::KHR_image_base);
+  }
+
+  bool HasKHRImagePixmap() const {
+    return IsExtensionSupported(EGLExtension::KHR_image) ||
+           IsExtensionSupported(EGLExtension::KHR_image_pixmap);
+  }
+
+  // -
+
+  EGLBoolean fTerminate() { return mLib->fTerminate(mDisplay); }
+
+  EGLBoolean fMakeCurrent(EGLSurface draw, EGLSurface read,
+                          EGLContext ctx) const {
+    return mLib->fMakeCurrent(mDisplay, draw, read, ctx);
+  }
+
+  EGLBoolean fDestroyContext(EGLContext ctx) const {
+    return mLib->fDestroyContext(mDisplay, ctx);
+  }
+
+  EGLContext fCreateContext(EGLConfig config, EGLContext share_context,
+                            const EGLint* attrib_list) const {
+    return mLib->fCreateContext(mDisplay, config, share_context, attrib_list);
+  }
+
+  EGLBoolean fDestroySurface(EGLSurface surface) const {
+    return mLib->fDestroySurface(mDisplay, surface);
+  }
+
+  EGLSurface fCreateWindowSurface(EGLConfig config, EGLNativeWindowType win,
+                                  const EGLint* attrib_list) const {
+    return mLib->fCreateWindowSurface(mDisplay, config, win, attrib_list);
+  }
+
+  EGLSurface fCreatePbufferSurface(EGLConfig config,
+                                   const EGLint* attrib_list) const {
+    return mLib->fCreatePbufferSurface(mDisplay, config, attrib_list);
+  }
+
+  EGLSurface fCreatePbufferFromClientBuffer(EGLenum buftype,
+                                            EGLClientBuffer buffer,
+                                            EGLConfig config,
+                                            const EGLint* attrib_list) const {
+    return mLib->fCreatePbufferFromClientBuffer(mDisplay, buftype, buffer,
+                                                config, attrib_list);
+  }
+
+  EGLBoolean fChooseConfig(const EGLint* attrib_list, EGLConfig* configs,
+                           EGLint config_size, EGLint* num_config) const {
+    return mLib->fChooseConfig(mDisplay, attrib_list, configs, config_size,
+                               num_config);
+  }
+
+  EGLBoolean fGetConfigAttrib(EGLConfig config, EGLint attribute,
+                              EGLint* value) const {
+    return mLib->fGetConfigAttrib(mDisplay, config, attribute, value);
+  }
+
+  EGLBoolean fGetConfigs(EGLConfig* configs, EGLint config_size,
+                         EGLint* num_config) const {
+    return mLib->fGetConfigs(mDisplay, configs, config_size, num_config);
+  }
+
+  EGLBoolean fSwapBuffers(EGLSurface surface) const {
+    return mLib->fSwapBuffers(mDisplay, surface);
+  }
+
+  EGLBoolean fBindTexImage(EGLSurface surface, EGLint buffer) const {
+    return mLib->fBindTexImage(mDisplay, surface, buffer);
+  }
+
+  EGLBoolean fReleaseTexImage(EGLSurface surface, EGLint buffer) const {
+    return mLib->fReleaseTexImage(mDisplay, surface, buffer);
+  }
+
+  EGLBoolean fSwapInterval(EGLint interval) const {
+    return mLib->fSwapInterval(mDisplay, interval);
+  }
+
+  EGLImage fCreateImage(EGLContext ctx, EGLenum target, EGLClientBuffer buffer,
+                        const EGLint* attribList) const {
+    MOZ_ASSERT(HasKHRImageBase());
+    return mLib->fCreateImage(mDisplay, ctx, target, buffer, attribList);
+  }
+
+  EGLBoolean fDestroyImage(EGLImage image) const {
+    MOZ_ASSERT(HasKHRImageBase());
+    return mLib->fDestroyImage(mDisplay, image);
+  }
+
+  EGLBoolean fQuerySurface(EGLSurface surface, EGLint attribute,
+                           EGLint* value) const {
+    return mLib->fQuerySurface(mDisplay, surface, attribute, value);
+  }
+
+  EGLBoolean fQuerySurfacePointerANGLE(EGLSurface surface, EGLint attribute,
+                                       void** value) const {
+    MOZ_ASSERT(IsExtensionSupported(
+        EGLExtension::ANGLE_surface_d3d_texture_2d_share_handle));
+    return mLib->fQuerySurfacePointerANGLE(mDisplay, surface, attribute, value);
+  }
+
+  EGLSync fCreateSync(EGLenum type, const EGLint* attrib_list) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_fence_sync));
+    return mLib->fCreateSync(mDisplay, type, attrib_list);
+  }
+
+  EGLBoolean fDestroySync(EGLSync sync) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_fence_sync));
+    return mLib->fDestroySync(mDisplay, sync);
+  }
+
+  EGLint fClientWaitSync(EGLSync sync, EGLint flags, EGLTime timeout) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_fence_sync));
+    return mLib->fClientWaitSync(mDisplay, sync, flags, timeout);
+  }
+
+  EGLBoolean fGetSyncAttrib(EGLSync sync, EGLint attribute,
+                            EGLint* value) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_fence_sync));
+    return mLib->fGetSyncAttrib(mDisplay, sync, attribute, value);
+  }
+
+  EGLint fWaitSync(EGLSync sync, EGLint flags) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_wait_sync));
+    return mLib->fWaitSync(mDisplay, sync, flags);
+  }
+
+  EGLint fDupNativeFenceFDANDROID(EGLSync sync) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::ANDROID_native_fence_sync));
+    return mLib->fDupNativeFenceFDANDROID(mDisplay, sync);
+  }
+
+  // EXT_device_query
+  EGLBoolean fQueryDisplayAttribEXT(EGLint attribute, EGLAttrib* value) const {
+    MOZ_ASSERT(mLib->IsExtensionSupported(EGLLibExtension::EXT_device_query));
+    return mLib->fQueryDisplayAttribEXT(mDisplay, attribute, value);
+  }
+
+  // KHR_stream
+  EGLStreamKHR fCreateStreamKHR(const EGLint* attrib_list) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_stream));
+    return mLib->fCreateStreamKHR(mDisplay, attrib_list);
+  }
+
+  EGLBoolean fDestroyStreamKHR(EGLStreamKHR stream) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_stream));
+    return mLib->fDestroyStreamKHR(mDisplay, stream);
+  }
+
+  EGLBoolean fQueryStreamKHR(EGLStreamKHR stream, EGLenum attribute,
+                             EGLint* value) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_stream));
+    return mLib->fQueryStreamKHR(mDisplay, stream, attribute, value);
+  }
+
+  // KHR_stream_consumer_gltexture
+  EGLBoolean fStreamConsumerGLTextureExternalKHR(EGLStreamKHR stream) const {
+    MOZ_ASSERT(
+        IsExtensionSupported(EGLExtension::KHR_stream_consumer_gltexture));
+    return mLib->fStreamConsumerGLTextureExternalKHR(mDisplay, stream);
+  }
+
+  EGLBoolean fStreamConsumerAcquireKHR(EGLStreamKHR stream) const {
+    MOZ_ASSERT(
+        IsExtensionSupported(EGLExtension::KHR_stream_consumer_gltexture));
+    return mLib->fStreamConsumerAcquireKHR(mDisplay, stream);
+  }
+
+  EGLBoolean fStreamConsumerReleaseKHR(EGLStreamKHR stream) const {
+    MOZ_ASSERT(
+        IsExtensionSupported(EGLExtension::KHR_stream_consumer_gltexture));
+    return mLib->fStreamConsumerReleaseKHR(mDisplay, stream);
+  }
+
+  // NV_stream_consumer_gltexture_yuv
+  EGLBoolean fStreamConsumerGLTextureExternalAttribsNV(
+      EGLStreamKHR stream, const EGLAttrib* attrib_list) const {
+    MOZ_ASSERT(
+        IsExtensionSupported(EGLExtension::NV_stream_consumer_gltexture_yuv));
+    return mLib->fStreamConsumerGLTextureExternalAttribsNV(mDisplay, stream,
+                                                           attrib_list);
+  }
+
+  // ANGLE_stream_producer_d3d_texture
+  EGLBoolean fCreateStreamProducerD3DTextureANGLE(
+      EGLStreamKHR stream, const EGLAttrib* attrib_list) const {
+    MOZ_ASSERT(
+        IsExtensionSupported(EGLExtension::ANGLE_stream_producer_d3d_texture));
+    return mLib->fCreateStreamProducerD3DTextureANGLE(mDisplay, stream,
+                                                      attrib_list);
+  }
+
+  EGLBoolean fStreamPostD3DTextureANGLE(EGLStreamKHR stream, void* texture,
+                                        const EGLAttrib* attrib_list) const {
+    MOZ_ASSERT(
+        IsExtensionSupported(EGLExtension::ANGLE_stream_producer_d3d_texture));
+    return mLib->fStreamPostD3DTextureANGLE(mDisplay, stream, texture,
+                                            attrib_list);
+  }
+
+  // EGL_EXT_swap_buffers_with_damage / EGL_KHR_swap_buffers_with_damage
+  EGLBoolean fSwapBuffersWithDamage(EGLSurface surface, const EGLint* rects,
+                                    EGLint n_rects) {
+    MOZ_ASSERT(
+        IsExtensionSupported(EGLExtension::EXT_swap_buffers_with_damage) ||
+        IsExtensionSupported(EGLExtension::KHR_swap_buffers_with_damage));
+    return mLib->fSwapBuffersWithDamage(mDisplay, surface, rects, n_rects);
+  }
+
+  // EGL_KHR_partial_update
+  EGLBoolean fSetDamageRegion(EGLSurface surface, const EGLint* rects,
+                              EGLint n_rects) {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::KHR_partial_update));
+    return mLib->fSetDamageRegion(mDisplay, surface, rects, n_rects);
+  }
+
+  EGLBoolean fExportDMABUFImageQuery(EGLImage image, int* fourcc,
+                                     int* num_planes,
+                                     uint64_t* modifiers) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::MESA_image_dma_buf_export));
+    return mLib->fExportDMABUFImageQuery(mDisplay, image, fourcc, num_planes,
+                                         modifiers);
+  }
+  EGLBoolean fExportDMABUFImage(EGLImage image, int* fds, EGLint* strides,
+                                EGLint* offsets) const {
+    MOZ_ASSERT(IsExtensionSupported(EGLExtension::MESA_image_dma_buf_export));
+    return mLib->fExportDMABUFImage(mDisplay, image, fds, strides, offsets);
+  }
+};
+
+} /* namespace gl */
+} /* namespace mozilla */
+
+#endif /* GLLIBRARYEGL_H_ */
diff --git a/gfx/gl/GLLibraryLoader.cpp b/gfx/gl/GLLibraryLoader.cpp
new file mode 100644
index 0000000000..e73f312d29
--- /dev/null
+++ b/gfx/gl/GLLibraryLoader.cpp
@@ -0,0 +1,74 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLLibraryLoader.h"
+
+#include <regex>
+
+#include "mozilla/gfx/Logging.h"
+#include "nsDebug.h"
+
+#ifdef WIN32
+#  include <windows.h>
+#endif
+
+namespace mozilla {
+namespace gl {
+
+void ClearSymbols(const SymLoadStruct* const firstStruct) {
+  for (auto itr = firstStruct; itr->symPointer; ++itr) {
+    *itr->symPointer = nullptr;
+  }
+}
+
+bool SymbolLoader::LoadSymbols(const SymLoadStruct* const firstStruct,
+                               const bool warnOnFailures) const {
+  bool ok = true;
+
+  for (auto itr = firstStruct; itr->symPointer; ++itr) {
+    *itr->symPointer = nullptr;
+
+    for (const auto& s : itr->symNames) {
+      if (!s) break;
+
+      const auto p = GetProcAddress(s);
+      if (p) {
+        *itr->symPointer = p;
+        break;
+      }
+    }
+
+    if (!*itr->symPointer) {
+      if (warnOnFailures) {
+        printf_stderr("Can't find symbol '%s'.\n", itr->symNames[0]);
+      }
+      ok = false;
+    }
+  }
+
+  return ok;
+}
+
+// -
+
+PRFuncPtr SymbolLoader::GetProcAddress(const char* const name) const {
+#ifdef DEBUG
+  static const std::regex kRESymbol("[a-z].*");
+  if (!std::regex_match(name, kRESymbol)) {
+    gfxCriticalError() << "Bad symbol name : " << name;
+  }
+#endif
+
+  PRFuncPtr ret = nullptr;
+  if (!ret && mLib) {
+    ret = PR_FindFunctionSymbol(mLib, name);
+  }
+  if (!ret && mPfn) {
+    ret = mPfn(name);
+  }
+  return ret;
+}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/GLLibraryLoader.h b/gfx/gl/GLLibraryLoader.h
new file mode 100644
index 0000000000..e44e862f03
--- /dev/null
+++ b/gfx/gl/GLLibraryLoader.h
@@ -0,0 +1,52 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLLIBRARYLOADER_H_
+#define GLLIBRARYLOADER_H_
+
+#include <array>
+#include <stdio.h>
+
+#include "GLDefs.h"
+#include "nscore.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/SharedLibrary.h"
+
+namespace mozilla {
+namespace gl {
+
+struct SymLoadStruct final {
+  PRFuncPtr* symPointer;
+  std::array<const char*, 6> symNames;
+};
+
+void ClearSymbols(const SymLoadStruct* firstStruct);
+
+class SymbolLoader final {
+ public:
+  typedef PRFuncPtr(GLAPIENTRY* GetProcAddressT)(const char*);
+
+  GetProcAddressT mPfn = nullptr;  // Try this first, if not null.
+  PRLibrary* mLib = nullptr;
+
+  explicit SymbolLoader(void*(GLAPIENTRY* pfn)(const char*))
+      : mPfn(GetProcAddressT(pfn)) {
+    MOZ_ASSERT(mPfn);
+  }
+
+  explicit SymbolLoader(const GetProcAddressT pfn) : mPfn(pfn) {
+    MOZ_ASSERT(mPfn);
+  }
+
+  explicit SymbolLoader(PRLibrary& lib) : mLib(&lib) { MOZ_ASSERT(mLib); }
+
+  PRFuncPtr GetProcAddress(const char*) const;
+  bool LoadSymbols(const SymLoadStruct* firstStruct,
+                   bool warnOnFailures = true) const;
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GLLIBRARYLOADER_H_
diff --git a/gfx/gl/GLReadTexImageHelper.cpp b/gfx/gl/GLReadTexImageHelper.cpp
new file mode 100644
index 0000000000..71c02e686d
--- /dev/null
+++ b/gfx/gl/GLReadTexImageHelper.cpp
@@ -0,0 +1,618 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLReadTexImageHelper.h"
+
+#include <utility>
+
+#include "GLContext.h"
+#include "OGLShaderProgram.h"
+#include "ScopedGLHelpers.h"
+#include "gfx2DGlue.h"
+#include "gfxColor.h"
+#include "gfxTypes.h"
+#include "mozilla/gfx/2D.h"
+
+namespace mozilla {
+namespace gl {
+
+using namespace mozilla::gfx;
+
+GLReadTexImageHelper::GLReadTexImageHelper(GLContext* gl) : mGL(gl) {
+  mPrograms[0] = 0;
+  mPrograms[1] = 0;
+  mPrograms[2] = 0;
+  mPrograms[3] = 0;
+}
+
+GLReadTexImageHelper::~GLReadTexImageHelper() {
+  if (!mGL->MakeCurrent()) return;
+
+  mGL->fDeleteProgram(mPrograms[0]);
+  mGL->fDeleteProgram(mPrograms[1]);
+  mGL->fDeleteProgram(mPrograms[2]);
+  mGL->fDeleteProgram(mPrograms[3]);
+}
+
+static const GLchar readTextureImageVS[] =
+    "attribute vec2 aVertex;\n"
+    "attribute vec2 aTexCoord;\n"
+    "varying vec2 vTexCoord;\n"
+    "void main() { gl_Position = vec4(aVertex, 0, 1); vTexCoord = aTexCoord; }";
+
+static const GLchar readTextureImageFS_TEXTURE_2D[] =
+    "#ifdef GL_ES\n"
+    "precision mediump float;\n"
+    "#endif\n"
+    "varying vec2 vTexCoord;\n"
+    "uniform sampler2D uTexture;\n"
+    "void main() { gl_FragColor = texture2D(uTexture, vTexCoord); }";
+
+static const GLchar readTextureImageFS_TEXTURE_2D_BGRA[] =
+    "#ifdef GL_ES\n"
+    "precision mediump float;\n"
+    "#endif\n"
+    "varying vec2 vTexCoord;\n"
+    "uniform sampler2D uTexture;\n"
+    "void main() { gl_FragColor = texture2D(uTexture, vTexCoord).bgra; }";
+
+static const GLchar readTextureImageFS_TEXTURE_EXTERNAL[] =
+    "#extension GL_OES_EGL_image_external : require\n"
+    "#ifdef GL_ES\n"
+    "precision mediump float;\n"
+    "#endif\n"
+    "varying vec2 vTexCoord;\n"
+    "uniform samplerExternalOES uTexture;\n"
+    "void main() { gl_FragColor = texture2D(uTexture, vTexCoord); }";
+
+static const GLchar readTextureImageFS_TEXTURE_RECTANGLE[] =
+    "#extension GL_ARB_texture_rectangle\n"
+    "#ifdef GL_ES\n"
+    "precision mediump float;\n"
+    "#endif\n"
+    "varying vec2 vTexCoord;\n"
+    "uniform sampler2DRect uTexture;\n"
+    "void main() { gl_FragColor = texture2DRect(uTexture, vTexCoord).bgra; }";
+
+GLuint GLReadTexImageHelper::TextureImageProgramFor(GLenum aTextureTarget,
+                                                    int aConfig) {
+  int variant = 0;
+  const GLchar* readTextureImageFS = nullptr;
+  if (aTextureTarget == LOCAL_GL_TEXTURE_2D) {
+    if (aConfig & mozilla::layers::ENABLE_TEXTURE_RB_SWAP) {
+      // Need to swizzle R/B.
+      readTextureImageFS = readTextureImageFS_TEXTURE_2D_BGRA;
+      variant = 1;
+    } else {
+      readTextureImageFS = readTextureImageFS_TEXTURE_2D;
+      variant = 0;
+    }
+  } else if (aTextureTarget == LOCAL_GL_TEXTURE_EXTERNAL) {
+    readTextureImageFS = readTextureImageFS_TEXTURE_EXTERNAL;
+    variant = 2;
+  } else if (aTextureTarget == LOCAL_GL_TEXTURE_RECTANGLE) {
+    readTextureImageFS = readTextureImageFS_TEXTURE_RECTANGLE;
+    variant = 3;
+  }
+
+  /* This might be overkill, but assure that we don't access out-of-bounds */
+  MOZ_ASSERT((size_t)variant < ArrayLength(mPrograms));
+  if (!mPrograms[variant]) {
+    GLuint vs = mGL->fCreateShader(LOCAL_GL_VERTEX_SHADER);
+    const GLchar* vsSourcePtr = &readTextureImageVS[0];
+    mGL->fShaderSource(vs, 1, &vsSourcePtr, nullptr);
+    mGL->fCompileShader(vs);
+
+    GLuint fs = mGL->fCreateShader(LOCAL_GL_FRAGMENT_SHADER);
+    mGL->fShaderSource(fs, 1, &readTextureImageFS, nullptr);
+    mGL->fCompileShader(fs);
+
+    GLuint program = mGL->fCreateProgram();
+    mGL->fAttachShader(program, vs);
+    mGL->fAttachShader(program, fs);
+    mGL->fBindAttribLocation(program, 0, "aVertex");
+    mGL->fBindAttribLocation(program, 1, "aTexCoord");
+    mGL->fLinkProgram(program);
+
+    GLint success;
+    mGL->fGetProgramiv(program, LOCAL_GL_LINK_STATUS, &success);
+
+    if (!success) {
+      mGL->fDeleteProgram(program);
+      program = 0;
+    }
+
+    mGL->fDeleteShader(vs);
+    mGL->fDeleteShader(fs);
+
+    mPrograms[variant] = program;
+  }
+
+  return mPrograms[variant];
+}
+
+bool GLReadTexImageHelper::DidGLErrorOccur(const char* str) {
+  GLenum error = mGL->fGetError();
+  if (error != LOCAL_GL_NO_ERROR) {
+    printf_stderr("GL ERROR: %s %s\n",
+                  GLContext::GLErrorToString(error).c_str(), str);
+    return true;
+  }
+
+  return false;
+}
+
+bool GetActualReadFormats(GLContext* gl, GLenum destFormat, GLenum destType,
+                          GLenum* out_readFormat, GLenum* out_readType) {
+  MOZ_ASSERT(out_readFormat);
+  MOZ_ASSERT(out_readType);
+
+  if (destFormat == LOCAL_GL_RGBA && destType == LOCAL_GL_UNSIGNED_BYTE) {
+    *out_readFormat = destFormat;
+    *out_readType = destType;
+    return true;
+  }
+
+  bool fallback = true;
+  if (gl->IsGLES()) {
+    GLenum auxFormat = 0;
+    GLenum auxType = 0;
+
+    gl->fGetIntegerv(LOCAL_GL_IMPLEMENTATION_COLOR_READ_FORMAT,
+                     (GLint*)&auxFormat);
+    gl->fGetIntegerv(LOCAL_GL_IMPLEMENTATION_COLOR_READ_TYPE, (GLint*)&auxType);
+
+    if (destFormat == auxFormat && destType == auxType) {
+      fallback = false;
+    }
+  } else {
+    switch (destFormat) {
+      case LOCAL_GL_RGB: {
+        if (destType == LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV) fallback = false;
+        break;
+      }
+      case LOCAL_GL_BGRA: {
+        if (destType == LOCAL_GL_UNSIGNED_BYTE ||
+            destType == LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV) {
+          fallback = false;
+        }
+        break;
+      }
+    }
+  }
+
+  if (fallback) {
+    *out_readFormat = LOCAL_GL_RGBA;
+    *out_readType = LOCAL_GL_UNSIGNED_BYTE;
+    return false;
+  } else {
+    *out_readFormat = destFormat;
+    *out_readType = destType;
+    return true;
+  }
+}
+
+void SwapRAndBComponents(DataSourceSurface* surf) {
+  DataSourceSurface::MappedSurface map;
+  if (!surf->Map(DataSourceSurface::MapType::READ_WRITE, &map)) {
+    MOZ_ASSERT(false, "SwapRAndBComponents: Failed to map surface.");
+    return;
+  }
+  MOZ_ASSERT(map.mStride >= 0);
+
+  const size_t rowBytes = surf->GetSize().width * 4;
+  const size_t rowHole = map.mStride - rowBytes;
+
+  uint8_t* row = map.mData;
+  if (!row) {
+    MOZ_ASSERT(false,
+               "SwapRAndBComponents: Failed to get data from"
+               " DataSourceSurface.");
+    surf->Unmap();
+    return;
+  }
+
+  const size_t rows = surf->GetSize().height;
+  for (size_t i = 0; i < rows; i++) {
+    const uint8_t* rowEnd = row + rowBytes;
+
+    while (row != rowEnd) {
+      std::swap(row[0], row[2]);
+      row += 4;
+    }
+
+    row += rowHole;
+  }
+
+  surf->Unmap();
+}
+
+static int CalcRowStride(int width, int pixelSize, int alignment) {
+  MOZ_ASSERT(alignment);
+
+  int rowStride = width * pixelSize;
+  if (rowStride % alignment) {  // Extra at the end of the line?
+    int alignmentCount = rowStride / alignment;
+    rowStride = (alignmentCount + 1) * alignment;
+  }
+  return rowStride;
+}
+
+static int GuessAlignment(int width, int pixelSize, int rowStride) {
+  int alignment = 8;  // Max GLES allows.
+  while (CalcRowStride(width, pixelSize, alignment) != rowStride) {
+    alignment /= 2;
+    if (!alignment) {
+      NS_WARNING("Bad alignment for GLES. Will use temp surf for readback.");
+      return 0;
+    }
+  }
+  return alignment;
+}
+
+void ReadPixelsIntoDataSurface(GLContext* gl, DataSourceSurface* dest) {
+  gl->MakeCurrent();
+  MOZ_ASSERT(dest->GetSize().width != 0);
+  MOZ_ASSERT(dest->GetSize().height != 0);
+
+  bool hasAlpha = dest->GetFormat() == SurfaceFormat::B8G8R8A8 ||
+                  dest->GetFormat() == SurfaceFormat::R8G8B8A8;
+
+  int destPixelSize;
+  GLenum destFormat;
+  GLenum destType;
+
+  switch (dest->GetFormat()) {
+    case SurfaceFormat::B8G8R8A8:
+    case SurfaceFormat::B8G8R8X8:
+      // Needs host (little) endian ARGB.
+      destFormat = LOCAL_GL_BGRA;
+      destType = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
+      break;
+    case SurfaceFormat::R8G8B8A8:
+    case SurfaceFormat::R8G8B8X8:
+      // Needs host (little) endian ABGR.
+      destFormat = LOCAL_GL_RGBA;
+      destType = LOCAL_GL_UNSIGNED_BYTE;
+      break;
+    case SurfaceFormat::R5G6B5_UINT16:
+      destFormat = LOCAL_GL_RGB;
+      destType = LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV;
+      break;
+    default:
+      MOZ_CRASH("GFX: Bad format, read pixels.");
+  }
+  destPixelSize = BytesPerPixel(dest->GetFormat());
+
+  Maybe<DataSourceSurface::ScopedMap> map;
+  map.emplace(dest, DataSourceSurface::READ_WRITE);
+
+  MOZ_ASSERT(dest->GetSize().width * destPixelSize <= map->GetStride());
+
+  GLenum readFormat = destFormat;
+  GLenum readType = destType;
+  bool needsTempSurf =
+      !GetActualReadFormats(gl, destFormat, destType, &readFormat, &readType);
+
+  RefPtr<DataSourceSurface> tempSurf;
+  DataSourceSurface* readSurf = dest;
+  int readAlignment =
+      GuessAlignment(dest->GetSize().width, destPixelSize, map->GetStride());
+  if (!readAlignment) {
+    needsTempSurf = true;
+  }
+  if (needsTempSurf) {
+    if (GLContext::ShouldSpew()) {
+      NS_WARNING(
+          "Needing intermediary surface for ReadPixels. This will be slow!");
+    }
+    SurfaceFormat readFormatGFX;
+
+    switch (readFormat) {
+      case LOCAL_GL_RGBA: {
+        readFormatGFX =
+            hasAlpha ? SurfaceFormat::R8G8B8A8 : SurfaceFormat::R8G8B8X8;
+        break;
+      }
+      case LOCAL_GL_BGRA: {
+        readFormatGFX =
+            hasAlpha ? SurfaceFormat::B8G8R8A8 : SurfaceFormat::B8G8R8X8;
+        break;
+      }
+      case LOCAL_GL_RGB: {
+        MOZ_ASSERT(destPixelSize == 2);
+        MOZ_ASSERT(readType == LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV);
+        readFormatGFX = SurfaceFormat::R5G6B5_UINT16;
+        break;
+      }
+      default: {
+        MOZ_CRASH("GFX: Bad read format, read format.");
+      }
+    }
+
+    switch (readType) {
+      case LOCAL_GL_UNSIGNED_BYTE: {
+        MOZ_ASSERT(readFormat == LOCAL_GL_RGBA);
+        readAlignment = 1;
+        break;
+      }
+      case LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV: {
+        MOZ_ASSERT(readFormat == LOCAL_GL_BGRA);
+        readAlignment = 4;
+        break;
+      }
+      case LOCAL_GL_UNSIGNED_SHORT_5_6_5_REV: {
+        MOZ_ASSERT(readFormat == LOCAL_GL_RGB);
+        readAlignment = 2;
+        break;
+      }
+      default: {
+        MOZ_CRASH("GFX: Bad read type, read type.");
+      }
+    }
+
+    int32_t stride = dest->GetSize().width * BytesPerPixel(readFormatGFX);
+    tempSurf = Factory::CreateDataSourceSurfaceWithStride(
+        dest->GetSize(), readFormatGFX, stride);
+    if (NS_WARN_IF(!tempSurf)) {
+      return;
+    }
+
+    readSurf = tempSurf;
+    map = Nothing();
+    map.emplace(readSurf, DataSourceSurface::READ_WRITE);
+  }
+
+  MOZ_ASSERT(readAlignment);
+  MOZ_ASSERT(reinterpret_cast<uintptr_t>(map->GetData()) % readAlignment == 0);
+
+  GLsizei width = dest->GetSize().width;
+  GLsizei height = dest->GetSize().height;
+
+  {
+    ScopedPackState safePackState(gl);
+    gl->fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, readAlignment);
+
+    gl->fReadPixels(0, 0, width, height, readFormat, readType, map->GetData());
+  }
+
+  map = Nothing();
+
+  if (readSurf != dest) {
+    gfx::Factory::CopyDataSourceSurface(readSurf, dest);
+  }
+}
+
+already_AddRefed<gfx::DataSourceSurface> YInvertImageSurface(
+    gfx::DataSourceSurface* aSurf, uint32_t aStride) {
+  RefPtr<DataSourceSurface> temp = Factory::CreateDataSourceSurfaceWithStride(
+      aSurf->GetSize(), aSurf->GetFormat(), aStride);
+  if (NS_WARN_IF(!temp)) {
+    return nullptr;
+  }
+
+  DataSourceSurface::MappedSurface map;
+  if (!temp->Map(DataSourceSurface::MapType::WRITE, &map)) {
+    return nullptr;
+  }
+
+  RefPtr<DrawTarget> dt = Factory::CreateDrawTargetForData(
+      BackendType::CAIRO, map.mData, temp->GetSize(), map.mStride,
+      temp->GetFormat());
+  if (!dt) {
+    temp->Unmap();
+    return nullptr;
+  }
+
+  dt->SetTransform(Matrix::Scaling(1.0, -1.0) *
+                   Matrix::Translation(0.0, aSurf->GetSize().height));
+  Rect rect(0, 0, aSurf->GetSize().width, aSurf->GetSize().height);
+  dt->DrawSurface(
+      aSurf, rect, rect, DrawSurfaceOptions(),
+      DrawOptions(1.0, CompositionOp::OP_SOURCE, AntialiasMode::NONE));
+  temp->Unmap();
+  return temp.forget();
+}
+
+already_AddRefed<DataSourceSurface> ReadBackSurface(GLContext* gl,
+                                                    GLuint aTexture,
+                                                    bool aYInvert,
+                                                    SurfaceFormat aFormat) {
+  gl->MakeCurrent();
+  gl->fActiveTexture(LOCAL_GL_TEXTURE0);
+  gl->fBindTexture(LOCAL_GL_TEXTURE_2D, aTexture);
+
+  IntSize size;
+  gl->fGetTexLevelParameteriv(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_TEXTURE_WIDTH,
+                              &size.width);
+  gl->fGetTexLevelParameteriv(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_TEXTURE_HEIGHT,
+                              &size.height);
+
+  RefPtr<DataSourceSurface> surf = Factory::CreateDataSourceSurfaceWithStride(
+      size, SurfaceFormat::B8G8R8A8,
+      GetAlignedStride<4>(size.width, BytesPerPixel(SurfaceFormat::B8G8R8A8)));
+
+  if (NS_WARN_IF(!surf)) {
+    return nullptr;
+  }
+
+  uint32_t currentPackAlignment = 0;
+  gl->fGetIntegerv(LOCAL_GL_PACK_ALIGNMENT, (GLint*)&currentPackAlignment);
+  if (currentPackAlignment != 4) {
+    gl->fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, 4);
+  }
+
+  DataSourceSurface::ScopedMap map(surf, DataSourceSurface::READ);
+  gl->fGetTexImage(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGBA,
+                   LOCAL_GL_UNSIGNED_BYTE, map.GetData());
+
+  if (currentPackAlignment != 4) {
+    gl->fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, currentPackAlignment);
+  }
+
+  if (aFormat == SurfaceFormat::R8G8B8A8 ||
+      aFormat == SurfaceFormat::R8G8B8X8) {
+    SwapRAndBComponents(surf);
+  }
+
+  if (aYInvert) {
+    surf = YInvertImageSurface(surf, map.GetStride());
+  }
+
+  return surf.forget();
+}
+
+#define CLEANUP_IF_GLERROR_OCCURRED(x) \
+  if (DidGLErrorOccur(x)) {            \
+    return false;                      \
+  }
+
+already_AddRefed<DataSourceSurface> GLReadTexImageHelper::ReadTexImage(
+    GLuint aTextureId, GLenum aTextureTarget, const gfx::IntSize& aSize,
+    /* ShaderConfigOGL.mFeature */ int aConfig, bool aYInvert) {
+  /* Allocate resulting image surface */
+  int32_t stride = aSize.width * BytesPerPixel(SurfaceFormat::R8G8B8A8);
+  RefPtr<DataSourceSurface> isurf = Factory::CreateDataSourceSurfaceWithStride(
+      aSize, SurfaceFormat::R8G8B8A8, stride);
+  if (NS_WARN_IF(!isurf)) {
+    return nullptr;
+  }
+
+  if (!ReadTexImage(isurf, aTextureId, aTextureTarget, aSize, aConfig,
+                    aYInvert)) {
+    return nullptr;
+  }
+
+  return isurf.forget();
+}
+
+bool GLReadTexImageHelper::ReadTexImage(
+    DataSourceSurface* aDest, GLuint aTextureId, GLenum aTextureTarget,
+    const gfx::IntSize& aSize,
+    /* ShaderConfigOGL.mFeature */ int aConfig, bool aYInvert) {
+  MOZ_ASSERT(aTextureTarget == LOCAL_GL_TEXTURE_2D ||
+             aTextureTarget == LOCAL_GL_TEXTURE_EXTERNAL ||
+             aTextureTarget == LOCAL_GL_TEXTURE_RECTANGLE_ARB);
+
+  mGL->MakeCurrent();
+
+  GLint oldrb, oldfb, oldprog, oldTexUnit, oldTex;
+  GLuint rb, fb;
+
+  do {
+    mGL->fGetIntegerv(LOCAL_GL_RENDERBUFFER_BINDING, &oldrb);
+    mGL->fGetIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, &oldfb);
+    mGL->fGetIntegerv(LOCAL_GL_CURRENT_PROGRAM, &oldprog);
+    mGL->fGetIntegerv(LOCAL_GL_ACTIVE_TEXTURE, &oldTexUnit);
+    mGL->fActiveTexture(LOCAL_GL_TEXTURE0);
+    switch (aTextureTarget) {
+      case LOCAL_GL_TEXTURE_2D:
+        mGL->fGetIntegerv(LOCAL_GL_TEXTURE_BINDING_2D, &oldTex);
+        break;
+      case LOCAL_GL_TEXTURE_EXTERNAL:
+        mGL->fGetIntegerv(LOCAL_GL_TEXTURE_BINDING_EXTERNAL, &oldTex);
+        break;
+      case LOCAL_GL_TEXTURE_RECTANGLE:
+        mGL->fGetIntegerv(LOCAL_GL_TEXTURE_BINDING_RECTANGLE, &oldTex);
+        break;
+      default: /* Already checked above */
+        break;
+    }
+
+    ScopedGLState scopedScissorTestState(mGL, LOCAL_GL_SCISSOR_TEST, false);
+    ScopedGLState scopedBlendState(mGL, LOCAL_GL_BLEND, false);
+    ScopedViewportRect scopedViewportRect(mGL, 0, 0, aSize.width, aSize.height);
+
+    /* Setup renderbuffer */
+    mGL->fGenRenderbuffers(1, &rb);
+    mGL->fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, rb);
+
+    GLenum rbInternalFormat =
+        mGL->IsGLES() ? (mGL->IsExtensionSupported(GLContext::OES_rgb8_rgba8)
+                             ? LOCAL_GL_RGBA8
+                             : LOCAL_GL_RGBA4)
+                      : LOCAL_GL_RGBA;
+    mGL->fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, rbInternalFormat,
+                              aSize.width, aSize.height);
+    CLEANUP_IF_GLERROR_OCCURRED("when binding and creating renderbuffer");
+
+    /* Setup framebuffer */
+    mGL->fGenFramebuffers(1, &fb);
+    mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, fb);
+    mGL->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER,
+                                  LOCAL_GL_COLOR_ATTACHMENT0,
+                                  LOCAL_GL_RENDERBUFFER, rb);
+    CLEANUP_IF_GLERROR_OCCURRED("when binding and creating framebuffer");
+
+    MOZ_ASSERT(mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER) ==
+               LOCAL_GL_FRAMEBUFFER_COMPLETE);
+
+    /* Setup vertex and fragment shader */
+    GLuint program = TextureImageProgramFor(aTextureTarget, aConfig);
+    MOZ_ASSERT(program);
+
+    mGL->fUseProgram(program);
+    CLEANUP_IF_GLERROR_OCCURRED("when using program");
+    mGL->fUniform1i(mGL->fGetUniformLocation(program, "uTexture"), 0);
+    CLEANUP_IF_GLERROR_OCCURRED("when setting uniform location");
+
+    /* Setup quad geometry */
+    mGL->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0);
+
+    float w = (aTextureTarget == LOCAL_GL_TEXTURE_RECTANGLE)
+                  ? (float)aSize.width
+                  : 1.0f;
+    float h = (aTextureTarget == LOCAL_GL_TEXTURE_RECTANGLE)
+                  ? (float)aSize.height
+                  : 1.0f;
+
+    const float vertexArray[4 * 2] = {-1.0f, -1.0f, 1.0f, -1.0f,
+                                      -1.0f, 1.0f,  1.0f, 1.0f};
+    ScopedVertexAttribPointer autoAttrib0(mGL, 0, 2, LOCAL_GL_FLOAT,
+                                          LOCAL_GL_FALSE, 0, 0, vertexArray);
+
+    const float u0 = 0.0f;
+    const float u1 = w;
+    const float v0 = aYInvert ? h : 0.0f;
+    const float v1 = aYInvert ? 0.0f : h;
+    const float texCoordArray[8] = {u0, v0, u1, v0, u0, v1, u1, v1};
+    ScopedVertexAttribPointer autoAttrib1(mGL, 1, 2, LOCAL_GL_FLOAT,
+                                          LOCAL_GL_FALSE, 0, 0, texCoordArray);
+
+    /* Bind the texture */
+    if (aTextureId) {
+      mGL->fBindTexture(aTextureTarget, aTextureId);
+      CLEANUP_IF_GLERROR_OCCURRED("when binding texture");
+    }
+
+    mGL->fDrawArrays(LOCAL_GL_TRIANGLE_STRIP, 0, 4);
+    CLEANUP_IF_GLERROR_OCCURRED("when drawing texture");
+
+    /* Read-back draw results */
+    ReadPixelsIntoDataSurface(mGL, aDest);
+    CLEANUP_IF_GLERROR_OCCURRED("when reading pixels into surface");
+  } while (false);
+
+  /* Restore GL state */
+  mGL->fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, oldrb);
+  mGL->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, oldfb);
+  mGL->fUseProgram(oldprog);
+
+  // note that deleting 0 has no effect in any of these calls
+  mGL->fDeleteRenderbuffers(1, &rb);
+  mGL->fDeleteFramebuffers(1, &fb);
+
+  if (aTextureId) mGL->fBindTexture(aTextureTarget, oldTex);
+
+  if (oldTexUnit != LOCAL_GL_TEXTURE0) mGL->fActiveTexture(oldTexUnit);
+
+  return true;
+}
+
+#undef CLEANUP_IF_GLERROR_OCCURRED
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/GLReadTexImageHelper.h b/gfx/gl/GLReadTexImageHelper.h
new file mode 100644
index 0000000000..3f5ad6bd1e
--- /dev/null
+++ b/gfx/gl/GLReadTexImageHelper.h
@@ -0,0 +1,81 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLREADTEXIMAGEHELPER_H_
+#define GLREADTEXIMAGEHELPER_H_
+
+#include "GLContextTypes.h"
+#include "mozilla/Attributes.h"
+#include "nsSize.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/gfx/Types.h"
+
+namespace mozilla {
+
+namespace gfx {
+class DataSourceSurface;
+}  // namespace gfx
+
+namespace gl {
+
+// Returns true if the `dest{Format,Type}` are the same as the
+// `read{Format,Type}`.
+bool GetActualReadFormats(GLContext* gl, GLenum destFormat, GLenum destType,
+                          GLenum* out_readFormat, GLenum* out_readType);
+
+void ReadPixelsIntoDataSurface(GLContext* aGL,
+                               gfx::DataSourceSurface* aSurface);
+
+already_AddRefed<gfx::DataSourceSurface> ReadBackSurface(
+    GLContext* gl, GLuint aTexture, bool aYInvert, gfx::SurfaceFormat aFormat);
+
+already_AddRefed<gfx::DataSourceSurface> YInvertImageSurface(
+    gfx::DataSourceSurface* aSurf, uint32_t aStride);
+
+void SwapRAndBComponents(gfx::DataSourceSurface* surf);
+
+class GLReadTexImageHelper final {
+  // The GLContext is the sole owner of the GLBlitHelper.
+  GLContext* mGL;
+
+  GLuint mPrograms[4];
+
+  GLuint TextureImageProgramFor(GLenum aTextureTarget, int aShader);
+
+  bool DidGLErrorOccur(const char* str);
+
+ public:
+  explicit GLReadTexImageHelper(GLContext* gl);
+  ~GLReadTexImageHelper();
+
+  /**
+   * Read the image data contained in aTexture, and return it as an
+   * ImageSurface. If GL_RGBA is given as the format, a
+   * SurfaceFormat::A8R8G8B8_UINT32 surface is returned. Not implemented yet: If
+   * GL_RGB is given as the format, a SurfaceFormat::X8R8G8B8_UINT32 surface is
+   * returned. If GL_LUMINANCE is given as the format, a SurfaceFormat::A8
+   * surface is returned.
+   *
+   * THIS IS EXPENSIVE.  It is ridiculously expensive.  Only do this
+   * if you absolutely positively must, and never in any performance
+   * critical path.
+   *
+   * NOTE: aShaderProgram is really mozilla::layers::ShaderProgramType. It is
+   * passed as int to eliminate including LayerManagerOGLProgram.h here.
+   */
+  already_AddRefed<gfx::DataSourceSurface> ReadTexImage(
+      GLuint aTextureId, GLenum aTextureTarget, const gfx::IntSize& aSize,
+      /* ShaderProgramType */ int aShaderProgram, bool aYInvert = false);
+
+  bool ReadTexImage(gfx::DataSourceSurface* aDest, GLuint aTextureId,
+                    GLenum aTextureTarget, const gfx::IntSize& aSize,
+                    int aShaderProgram, bool aYInvert = false);
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif
diff --git a/gfx/gl/GLScreenBuffer.cpp b/gfx/gl/GLScreenBuffer.cpp
new file mode 100644
index 0000000000..dca3fd7b42
--- /dev/null
+++ b/gfx/gl/GLScreenBuffer.cpp
@@ -0,0 +1,140 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLScreenBuffer.h"
+
+#include "CompositorTypes.h"
+#include "GLContext.h"
+#include "gfx2DGlue.h"
+#include "MozFramebuffer.h"
+#include "SharedSurface.h"
+
+namespace mozilla::gl {
+
+// -
+// SwapChainPresenter
+
+// We need to apply pooling on Android because of the AndroidSurface slow
+// destructor bugs. They cause a noticeable performance hit. See bug
+// #1646073.
+static constexpr size_t kPoolSize =
+#if defined(MOZ_WIDGET_ANDROID)
+    4;
+#else
+    0;
+#endif
+
+UniquePtr<SwapChainPresenter> SwapChain::Acquire(
+    const gfx::IntSize& size, const gfx::ColorSpace2 colorSpace) {
+  MOZ_ASSERT(mFactory);
+
+  std::shared_ptr<SharedSurface> surf;
+  if (!mPool.empty()) {
+    // Try reuse
+    const auto& existingDesc = mPool.front()->mDesc;
+    auto newDesc = existingDesc;
+    newDesc.size = size;
+    newDesc.colorSpace = colorSpace;
+    if (newDesc != existingDesc || !mPool.front()->IsValid()) {
+      mPool = {};
+    }
+  }
+
+  // When mDestroyedCallback exists, recycling of SharedSurfaces is managed by
+  // the owner of the SwapChain by calling StoreRecycledSurface().
+  const auto poolSize = mDestroyedCallback ? 0 : kPoolSize;
+
+  if (!mPool.empty() && (!poolSize || mPool.size() == poolSize)) {
+    surf = mPool.front();
+    mPool.pop();
+  }
+  if (!surf) {
+    auto uniquePtrSurf = mFactory->CreateShared(size, colorSpace);
+    if (!uniquePtrSurf) return nullptr;
+    surf.reset(uniquePtrSurf.release());
+  }
+  mPool.push(surf);
+  while (mPool.size() > poolSize) {
+    mPool.pop();
+  }
+
+  auto ret = MakeUnique<SwapChainPresenter>(*this);
+  const auto old = ret->SwapBackBuffer(surf);
+  MOZ_ALWAYS_TRUE(!old);
+  return ret;
+}
+
+void SwapChain::ClearPool() {
+  mPool = {};
+  mPrevFrontBuffer = nullptr;
+}
+
+void SwapChain::StoreRecycledSurface(
+    const std::shared_ptr<SharedSurface>& surf) {
+  mPool.push(surf);
+}
+
+// -
+
+SwapChainPresenter::SwapChainPresenter(SwapChain& swapChain)
+    : mSwapChain(&swapChain) {
+  MOZ_RELEASE_ASSERT(mSwapChain->mPresenter == nullptr);
+  mSwapChain->mPresenter = this;
+}
+
+SwapChainPresenter::~SwapChainPresenter() {
+  if (!mSwapChain) return;
+  MOZ_RELEASE_ASSERT(mSwapChain->mPresenter == this);
+  mSwapChain->mPresenter = nullptr;
+
+  auto newFront = SwapBackBuffer(nullptr);
+  if (newFront) {
+    mSwapChain->mPrevFrontBuffer = mSwapChain->mFrontBuffer;
+    mSwapChain->mFrontBuffer = newFront;
+  }
+}
+
+std::shared_ptr<SharedSurface> SwapChainPresenter::SwapBackBuffer(
+    std::shared_ptr<SharedSurface> back) {
+  if (mBackBuffer) {
+    mBackBuffer->UnlockProd();
+    mBackBuffer->ProducerRelease();
+    mBackBuffer->Commit();
+  }
+  auto old = mBackBuffer;
+  mBackBuffer = back;
+  if (mBackBuffer) {
+    mBackBuffer->WaitForBufferOwnership();
+    mBackBuffer->ProducerAcquire();
+    mBackBuffer->LockProd();
+  }
+  return old;
+}
+
+GLuint SwapChainPresenter::Fb() const {
+  if (!mBackBuffer) return 0;
+  const auto& fb = mBackBuffer->mFb;
+  if (!fb) return 0;
+  return fb->mFB;
+}
+
+// -
+// SwapChain
+
+SwapChain::SwapChain() = default;
+
+SwapChain::~SwapChain() {
+  if (mPresenter) {
+    // Out of order destruction, but ok.
+    (void)mPresenter->SwapBackBuffer(nullptr);
+    mPresenter->mSwapChain = nullptr;
+    mPresenter = nullptr;
+  }
+  if (mDestroyedCallback) {
+    mDestroyedCallback();
+  }
+}
+
+}  // namespace mozilla::gl
diff --git a/gfx/gl/GLScreenBuffer.h b/gfx/gl/GLScreenBuffer.h
new file mode 100644
index 0000000000..1b05a9c4b5
--- /dev/null
+++ b/gfx/gl/GLScreenBuffer.h
@@ -0,0 +1,87 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* GLScreenBuffer is the abstraction for the "default framebuffer" used
+ * by an offscreen GLContext. Since it's only for offscreen GLContext's,
+ * it's only useful for things like WebGL, and is NOT used by the
+ * compositor's GLContext. Remember that GLContext provides an abstraction
+ * so that even if you want to draw to the 'screen', even if that's not
+ * actually the screen, just draw to 0. This GLScreenBuffer class takes the
+ * logic handling out of GLContext.
+ */
+
+#ifndef SCREEN_BUFFER_H_
+#define SCREEN_BUFFER_H_
+
+#include "GLTypes.h"
+#include "mozilla/gfx/Point.h"
+#include "mozilla/UniquePtr.h"
+
+#include <functional>
+#include <queue>
+#include <memory>
+
+namespace mozilla {
+namespace gl {
+
+class SharedSurface;
+class SurfaceFactory;
+class SwapChain;
+
+class SwapChainPresenter final {
+  friend class SwapChain;
+
+  SwapChain* mSwapChain;
+  std::shared_ptr<SharedSurface> mBackBuffer;
+
+ public:
+  explicit SwapChainPresenter(SwapChain& swapChain);
+  ~SwapChainPresenter();
+
+  const auto& BackBuffer() const { return mBackBuffer; }
+
+  std::shared_ptr<SharedSurface> SwapBackBuffer(std::shared_ptr<SharedSurface>);
+  GLuint Fb() const;
+};
+
+// -
+
+class SwapChain final {
+  friend class SwapChainPresenter;
+
+ public:
+  UniquePtr<SurfaceFactory> mFactory;
+
+ private:
+  std::queue<std::shared_ptr<SharedSurface>> mPool;
+  std::shared_ptr<SharedSurface> mFrontBuffer;
+  std::function<void()> mDestroyedCallback;
+
+ public:
+  std::shared_ptr<SharedSurface>
+      mPrevFrontBuffer;  // Hold this ref while it's in-flight.
+ private:
+  SwapChainPresenter* mPresenter = nullptr;
+
+ public:
+  SwapChain();
+  virtual ~SwapChain();
+
+  void ClearPool();
+  void StoreRecycledSurface(const std::shared_ptr<SharedSurface>& surf);
+  const auto& FrontBuffer() const { return mFrontBuffer; }
+  UniquePtr<SwapChainPresenter> Acquire(const gfx::IntSize&, gfx::ColorSpace2);
+
+  void SetDestroyedCallback(std::function<void()>&& aDestroyedCallback) {
+    MOZ_ASSERT(!mDestroyedCallback);
+    mDestroyedCallback = std::move(aDestroyedCallback);
+    mPool = {};
+  }
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // SCREEN_BUFFER_H_
diff --git a/gfx/gl/GLTextureImage.cpp b/gfx/gl/GLTextureImage.cpp
new file mode 100644
index 0000000000..e2295753fc
--- /dev/null
+++ b/gfx/gl/GLTextureImage.cpp
@@ -0,0 +1,453 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLTextureImage.h"
+#include "GLContext.h"
+#include "gfxContext.h"
+#include "gfxPlatform.h"
+#include "gfxUtils.h"
+#include "gfx2DGlue.h"
+#include "mozilla/gfx/2D.h"
+#include "ScopedGLHelpers.h"
+#include "GLUploadHelpers.h"
+#include "GfxTexturesReporter.h"
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace gl {
+
+already_AddRefed<TextureImage> CreateTextureImage(
+    GLContext* gl, const gfx::IntSize& aSize,
+    TextureImage::ContentType aContentType, GLenum aWrapMode,
+    TextureImage::Flags aFlags, TextureImage::ImageFormat aImageFormat) {
+  GLint maxTextureSize;
+  gl->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &maxTextureSize);
+  if (aSize.width > maxTextureSize || aSize.height > maxTextureSize) {
+    NS_ASSERTION(aWrapMode == LOCAL_GL_CLAMP_TO_EDGE,
+                 "Can't support wrapping with tiles!");
+    return CreateTiledTextureImage(gl, aSize, aContentType, aFlags,
+                                   aImageFormat);
+  } else {
+    return CreateBasicTextureImage(gl, aSize, aContentType, aWrapMode, aFlags);
+  }
+}
+
+static already_AddRefed<TextureImage> TileGenFunc(
+    GLContext* gl, const IntSize& aSize, TextureImage::ContentType aContentType,
+    TextureImage::Flags aFlags, TextureImage::ImageFormat aImageFormat) {
+  return CreateBasicTextureImage(gl, aSize, aContentType,
+                                 LOCAL_GL_CLAMP_TO_EDGE, aFlags);
+}
+
+already_AddRefed<TextureImage> TextureImage::Create(
+    GLContext* gl, const gfx::IntSize& size,
+    TextureImage::ContentType contentType, GLenum wrapMode,
+    TextureImage::Flags flags) {
+  return CreateTextureImage(gl, size, contentType, wrapMode, flags);
+}
+
+bool TextureImage::UpdateFromDataSource(gfx::DataSourceSurface* aSurface,
+                                        const nsIntRegion* aDestRegion,
+                                        const gfx::IntPoint* aSrcOffset,
+                                        const gfx::IntPoint* aDstOffset) {
+  nsIntRegion destRegion = aDestRegion
+                               ? *aDestRegion
+                               : IntRect(0, 0, aSurface->GetSize().width,
+                                         aSurface->GetSize().height);
+  gfx::IntPoint srcPoint = aSrcOffset ? *aSrcOffset : gfx::IntPoint(0, 0);
+  gfx::IntPoint srcPointOut = aDstOffset ? *aDstOffset : gfx::IntPoint(0, 0);
+  return DirectUpdate(aSurface, destRegion, srcPoint, srcPointOut);
+}
+
+gfx::IntRect TextureImage::GetTileRect() {
+  return gfx::IntRect(gfx::IntPoint(0, 0), mSize);
+}
+
+gfx::IntRect TextureImage::GetSrcTileRect() { return GetTileRect(); }
+
+void TextureImage::UpdateUploadSize(size_t amount) {
+  if (mUploadSize > 0) {
+    GfxTexturesReporter::UpdateAmount(GfxTexturesReporter::MemoryFreed,
+                                      mUploadSize);
+  }
+  mUploadSize = amount;
+  GfxTexturesReporter::UpdateAmount(GfxTexturesReporter::MemoryAllocated,
+                                    mUploadSize);
+}
+
+BasicTextureImage::~BasicTextureImage() {
+  GLContext* ctx = mGLContext;
+  if (ctx->IsDestroyed() || !ctx->IsValidOwningThread()) {
+    ctx = ctx->GetSharedContext();
+  }
+
+  // If we have a context, then we need to delete the texture;
+  // if we don't have a context (either real or shared),
+  // then they went away when the contex was deleted, because it
+  // was the only one that had access to it.
+  if (ctx && ctx->MakeCurrent()) {
+    ctx->fDeleteTextures(1, &mTexture);
+  }
+}
+
+void BasicTextureImage::BindTexture(GLenum aTextureUnit) {
+  mGLContext->fActiveTexture(aTextureUnit);
+  mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
+  mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0);
+}
+
+bool BasicTextureImage::DirectUpdate(
+    gfx::DataSourceSurface* aSurf, const nsIntRegion& aRegion,
+    const gfx::IntPoint& aSrcOffset /* = gfx::IntPoint(0, 0) */,
+    const gfx::IntPoint& aDstOffset /* = gfx::IntPoint(0, 0) */) {
+  nsIntRegion region;
+  if (mTextureState == Valid) {
+    region = aRegion;
+  } else {
+    region = nsIntRegion(IntRect(0, 0, mSize.width, mSize.height));
+  }
+  bool needInit = mTextureState == Created;
+  size_t uploadSize;
+
+  mTextureFormat =
+      UploadSurfaceToTexture(mGLContext, aSurf, region, mTexture, mSize,
+                             &uploadSize, needInit, aSrcOffset, aDstOffset);
+  if (mTextureFormat == SurfaceFormat::UNKNOWN) {
+    return false;
+  }
+
+  if (uploadSize > 0) {
+    UpdateUploadSize(uploadSize);
+  }
+  mTextureState = Valid;
+  return true;
+}
+
+void BasicTextureImage::Resize(const gfx::IntSize& aSize) {
+  mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
+
+  // This matches the logic in UploadImageDataToTexture so that
+  // we avoid mixing formats.
+  GLenum format;
+  GLenum type;
+  if (mGLContext->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
+    MOZ_ASSERT(!mGLContext->IsGLES());
+    format = LOCAL_GL_BGRA;
+    type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
+  } else {
+    format = LOCAL_GL_RGBA;
+    type = LOCAL_GL_UNSIGNED_BYTE;
+  }
+
+  mGLContext->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, LOCAL_GL_RGBA, aSize.width,
+                          aSize.height, 0, format, type, nullptr);
+
+  mTextureState = Allocated;
+  mSize = aSize;
+}
+
+gfx::IntSize TextureImage::GetSize() const { return mSize; }
+
+TextureImage::TextureImage(const gfx::IntSize& aSize, GLenum aWrapMode,
+                           ContentType aContentType, Flags aFlags)
+    : mSize(aSize),
+      mWrapMode(aWrapMode),
+      mContentType(aContentType),
+      mTextureFormat(gfx::SurfaceFormat::UNKNOWN),
+      mSamplingFilter(SamplingFilter::GOOD),
+      mFlags(aFlags),
+      mUploadSize(0) {}
+
+BasicTextureImage::BasicTextureImage(GLuint aTexture, const gfx::IntSize& aSize,
+                                     GLenum aWrapMode, ContentType aContentType,
+                                     GLContext* aContext,
+                                     TextureImage::Flags aFlags)
+    : TextureImage(aSize, aWrapMode, aContentType, aFlags),
+      mTexture(aTexture),
+      mTextureState(Created),
+      mGLContext(aContext) {}
+
+static bool WantsSmallTiles(GLContext* gl) {
+  // We can't use small tiles on the SGX 540, because of races in texture
+  // upload.
+  if (gl->WorkAroundDriverBugs() && gl->Renderer() == GLRenderer::SGX540)
+    return false;
+
+  // We should use small tiles for good performance if we can't use
+  // glTexSubImage2D() for some reason.
+  if (!ShouldUploadSubTextures(gl)) return true;
+
+  // Don't use small tiles otherwise. (If we implement incremental texture
+  // upload, then we will want to revisit this.)
+  return false;
+}
+
+TiledTextureImage::TiledTextureImage(GLContext* aGL, gfx::IntSize aSize,
+                                     TextureImage::ContentType aContentType,
+                                     TextureImage::Flags aFlags,
+                                     TextureImage::ImageFormat aImageFormat)
+    : TextureImage(aSize, LOCAL_GL_CLAMP_TO_EDGE, aContentType, aFlags),
+      mCurrentImage(0),
+      mIterationCallback(nullptr),
+      mIterationCallbackData(nullptr),
+      mTileSize(0),
+      mRows(0),
+      mColumns(0),
+      mGL(aGL),
+      mTextureState(Created),
+      mImageFormat(aImageFormat) {
+  if (!(aFlags & TextureImage::DisallowBigImage) && WantsSmallTiles(mGL)) {
+    mTileSize = 256;
+  } else {
+    mGL->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, (GLint*)&mTileSize);
+  }
+  if (aSize.width != 0 && aSize.height != 0) {
+    Resize(aSize);
+  }
+}
+
+TiledTextureImage::~TiledTextureImage() = default;
+
+bool TiledTextureImage::DirectUpdate(
+    gfx::DataSourceSurface* aSurf, const nsIntRegion& aRegion,
+    const gfx::IntPoint& aSrcOffset /* = gfx::IntPoint(0, 0) */,
+    const gfx::IntPoint& aDstOffset /* = gfx::IntPoint(0, 0) */) {
+  // We don't handle non-zero aDstOffset
+  MOZ_RELEASE_ASSERT(aDstOffset == gfx::IntPoint());
+
+  if (mSize.width == 0 || mSize.height == 0) {
+    return true;
+  }
+
+  nsIntRegion region;
+
+  if (mTextureState != Valid) {
+    IntRect bounds = IntRect(0, 0, mSize.width, mSize.height);
+    region = nsIntRegion(bounds);
+  } else {
+    region = aRegion;
+  }
+
+  bool result = true;
+  int oldCurrentImage = mCurrentImage;
+  BeginBigImageIteration();
+  do {
+    IntRect tileRect = GetSrcTileRect();
+    int xPos = tileRect.X();
+    int yPos = tileRect.Y();
+
+    nsIntRegion tileRegion;
+    tileRegion.And(region, tileRect);  // intersect with tile
+
+    if (tileRegion.IsEmpty()) continue;
+
+    tileRegion.MoveBy(-xPos, -yPos);  // translate into tile local space
+
+    result &= mImages[mCurrentImage]->DirectUpdate(
+        aSurf, tileRegion, aSrcOffset + gfx::IntPoint(xPos, yPos));
+
+    if (mCurrentImage == mImages.Length() - 1) {
+      // We know we're done, but we still need to ensure that the callback
+      // gets called (e.g. to update the uploaded region).
+      NextTile();
+      break;
+    }
+    // Override a callback cancelling iteration if the texture wasn't valid.
+    // We need to force the update in that situation, or we may end up
+    // showing invalid/out-of-date texture data.
+  } while (NextTile() || (mTextureState != Valid));
+  mCurrentImage = oldCurrentImage;
+
+  mTextureFormat = mImages[0]->GetTextureFormat();
+  mTextureState = Valid;
+  return result;
+}
+
+void TiledTextureImage::BeginBigImageIteration() { mCurrentImage = 0; }
+
+bool TiledTextureImage::NextTile() {
+  bool continueIteration = true;
+
+  if (mIterationCallback)
+    continueIteration =
+        mIterationCallback(this, mCurrentImage, mIterationCallbackData);
+
+  if (mCurrentImage + 1 < mImages.Length()) {
+    mCurrentImage++;
+    return continueIteration;
+  }
+  return false;
+}
+
+void TiledTextureImage::SetIterationCallback(
+    BigImageIterationCallback aCallback, void* aCallbackData) {
+  mIterationCallback = aCallback;
+  mIterationCallbackData = aCallbackData;
+}
+
+gfx::IntRect TiledTextureImage::GetTileRect() {
+  if (!GetTileCount()) {
+    return gfx::IntRect();
+  }
+  gfx::IntRect rect = mImages[mCurrentImage]->GetTileRect();
+  unsigned int xPos = (mCurrentImage % mColumns) * mTileSize;
+  unsigned int yPos = (mCurrentImage / mColumns) * mTileSize;
+  rect.MoveBy(xPos, yPos);
+  return rect;
+}
+
+gfx::IntRect TiledTextureImage::GetSrcTileRect() {
+  gfx::IntRect rect = GetTileRect();
+  const bool needsYFlip = mFlags & OriginBottomLeft;
+  unsigned int srcY =
+      needsYFlip ? mSize.height - rect.Height() - rect.Y() : rect.Y();
+  return gfx::IntRect(rect.X(), srcY, rect.Width(), rect.Height());
+}
+
+void TiledTextureImage::BindTexture(GLenum aTextureUnit) {
+  if (!GetTileCount()) {
+    return;
+  }
+  mImages[mCurrentImage]->BindTexture(aTextureUnit);
+}
+
+/*
+ * Resize, trying to reuse tiles. The reuse strategy is to decide on reuse per
+ * column. A tile on a column is reused if it hasn't changed size, otherwise it
+ * is discarded/replaced. Extra tiles on a column are pruned after iterating
+ * each column, and extra rows are pruned after iteration over the entire image
+ * finishes.
+ */
+void TiledTextureImage::Resize(const gfx::IntSize& aSize) {
+  if (mSize == aSize && mTextureState != Created) {
+    return;
+  }
+
+  // calculate rows and columns, rounding up
+  unsigned int columns = (aSize.width + mTileSize - 1) / mTileSize;
+  unsigned int rows = (aSize.height + mTileSize - 1) / mTileSize;
+
+  // Iterate over old tile-store and insert/remove tiles as necessary
+  int row;
+  unsigned int i = 0;
+  for (row = 0; row < (int)rows; row++) {
+    // If we've gone beyond how many rows there were before, set mColumns to
+    // zero so that we only create new tiles.
+    if (row >= (int)mRows) mColumns = 0;
+
+    // Similarly, if we're on the last row of old tiles and the height has
+    // changed, discard all tiles in that row.
+    // This will cause the pruning of columns not to work, but we don't need
+    // to worry about that, as no more tiles will be reused past this point
+    // anyway.
+    if ((row == (int)mRows - 1) && (aSize.height != mSize.height)) mColumns = 0;
+
+    int col;
+    for (col = 0; col < (int)columns; col++) {
+      IntSize size(  // use tilesize first, then the remainder
+          (col + 1) * mTileSize > (unsigned int)aSize.width
+              ? aSize.width % mTileSize
+              : mTileSize,
+          (row + 1) * mTileSize > (unsigned int)aSize.height
+              ? aSize.height % mTileSize
+              : mTileSize);
+
+      bool replace = false;
+
+      // Check if we can re-use old tiles.
+      if (col < (int)mColumns) {
+        // Reuse an existing tile. If the tile is an end-tile and the
+        // width differs, replace it instead.
+        if (mSize.width != aSize.width) {
+          if (col == (int)mColumns - 1) {
+            // Tile at the end of the old column, replace it with
+            // a new one.
+            replace = true;
+          } else if (col == (int)columns - 1) {
+            // Tile at the end of the new column, create a new one.
+          } else {
+            // Before the last column on both the old and new sizes,
+            // reuse existing tile.
+            i++;
+            continue;
+          }
+        } else {
+          // Width hasn't changed, reuse existing tile.
+          i++;
+          continue;
+        }
+      }
+
+      // Create a new tile.
+      RefPtr<TextureImage> teximg =
+          TileGenFunc(mGL, size, mContentType, mFlags, mImageFormat);
+      if (replace)
+        mImages.ReplaceElementAt(i, teximg);
+      else
+        mImages.InsertElementAt(i, teximg);
+      i++;
+    }
+
+    // Prune any unused tiles on the end of the column.
+    if (row < (int)mRows) {
+      for (col = (int)mColumns - col; col > 0; col--) {
+        mImages.RemoveElementAt(i);
+      }
+    }
+  }
+
+  // Prune any unused tiles at the end of the store.
+  mImages.RemoveLastElements(mImages.Length() - i);
+
+  // Reset tile-store properties.
+  mRows = rows;
+  mColumns = columns;
+  mSize = aSize;
+  mTextureState = Allocated;
+  mCurrentImage = 0;
+}
+
+uint32_t TiledTextureImage::GetTileCount() { return mImages.Length(); }
+
+already_AddRefed<TextureImage> CreateTiledTextureImage(
+    GLContext* aGL, const gfx::IntSize& aSize,
+    TextureImage::ContentType aContentType, TextureImage::Flags aFlags,
+    TextureImage::ImageFormat aImageFormat) {
+  RefPtr<TextureImage> texImage =
+      static_cast<TextureImage*>(new gl::TiledTextureImage(
+          aGL, aSize, aContentType, aFlags, aImageFormat));
+  return texImage.forget();
+}
+
+already_AddRefed<TextureImage> CreateBasicTextureImage(
+    GLContext* aGL, const gfx::IntSize& aSize,
+    TextureImage::ContentType aContentType, GLenum aWrapMode,
+    TextureImage::Flags aFlags) {
+  bool useNearestFilter = aFlags & TextureImage::UseNearestFilter;
+  if (!aGL->MakeCurrent()) {
+    return nullptr;
+  }
+
+  GLuint texture = 0;
+  aGL->fGenTextures(1, &texture);
+
+  ScopedBindTexture bind(aGL, texture);
+
+  GLint texfilter = useNearestFilter ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR;
+  aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER,
+                      texfilter);
+  aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER,
+                      texfilter);
+  aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, aWrapMode);
+  aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, aWrapMode);
+
+  RefPtr<BasicTextureImage> texImage = new BasicTextureImage(
+      texture, aSize, aWrapMode, aContentType, aGL, aFlags);
+  return texImage.forget();
+}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/GLTextureImage.h b/gfx/gl/GLTextureImage.h
new file mode 100644
index 0000000000..eb07b08832
--- /dev/null
+++ b/gfx/gl/GLTextureImage.h
@@ -0,0 +1,288 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLTEXTUREIMAGE_H_
+#define GLTEXTUREIMAGE_H_
+
+#include "nsRegion.h"
+#include "nsTArray.h"
+#include "gfxTypes.h"
+#include "GLContextTypes.h"
+#include "mozilla/gfx/Rect.h"
+#include "mozilla/RefPtr.h"
+
+class gfxASurface;
+
+namespace mozilla {
+namespace gfx {
+class DataSourceSurface;
+class DrawTarget;
+}  // namespace gfx
+}  // namespace mozilla
+
+namespace mozilla {
+namespace gl {
+class GLContext;
+
+/**
+ * A TextureImage provides a mechanism to synchronize data from a
+ * surface to a texture in the server.  TextureImages are associated
+ * with one and only one GLContext.
+ */
+class TextureImage {
+  NS_INLINE_DECL_REFCOUNTING(TextureImage)
+ public:
+  enum TextureState {
+    Created,    // Texture created, but has not had glTexImage called to
+                // initialize it.
+    Allocated,  // Texture memory exists, but contents are invalid.
+    Valid       // Texture fully ready to use.
+  };
+
+  enum Flags {
+    NoFlags = 0x0,
+    UseNearestFilter = 0x1,
+    OriginBottomLeft = 0x2,
+    DisallowBigImage = 0x4
+  };
+
+  typedef gfxContentType ContentType;
+  typedef gfxImageFormat ImageFormat;
+
+  static already_AddRefed<TextureImage> Create(
+      GLContext* gl, const gfx::IntSize& aSize,
+      TextureImage::ContentType aContentType, GLenum aWrapMode,
+      TextureImage::Flags aFlags = TextureImage::NoFlags);
+
+  /**
+   * The Image may contain several textures for different regions (tiles).
+   * These functions iterate over each sub texture image tile.
+   */
+  virtual void BeginBigImageIteration() {}
+
+  virtual bool NextTile() { return false; }
+
+  // Function prototype for a tile iteration callback. Returning false will
+  // cause iteration to be interrupted (i.e. the corresponding NextTile call
+  // will return false).
+  typedef bool (*BigImageIterationCallback)(TextureImage* aImage,
+                                            int aTileNumber,
+                                            void* aCallbackData);
+
+  // Sets a callback to be called every time NextTile is called.
+  virtual void SetIterationCallback(BigImageIterationCallback aCallback,
+                                    void* aCallbackData) {}
+
+  virtual gfx::IntRect GetTileRect();
+
+  virtual GLuint GetTextureID() = 0;
+
+  virtual uint32_t GetTileCount() { return 1; }
+
+  /**
+   * Set this TextureImage's size, and ensure a texture has been
+   * allocated.
+   * After a resize, the contents are undefined.
+   */
+  virtual void Resize(const gfx::IntSize& aSize) = 0;
+
+  /**
+   * Mark this texture as having valid contents. Call this after modifying
+   * the texture contents externally.
+   */
+  virtual void MarkValid() {}
+
+  /**
+   * aSurf - the source surface to update from
+   * aRegion - the region in this image to update
+   * aSrcOffset - offset in the source to update from
+   * aDstOffset - offset in the destination to update to
+   */
+  virtual bool DirectUpdate(
+      gfx::DataSourceSurface* aSurf, const nsIntRegion& aRegion,
+      const gfx::IntPoint& aSrcOffset = gfx::IntPoint(0, 0),
+      const gfx::IntPoint& aDstOffset = gfx::IntPoint(0, 0)) = 0;
+  bool UpdateFromDataSource(gfx::DataSourceSurface* aSurf,
+                            const nsIntRegion* aDstRegion = nullptr,
+                            const gfx::IntPoint* aSrcOffset = nullptr,
+                            const gfx::IntPoint* aDstOffset = nullptr);
+
+  virtual void BindTexture(GLenum aTextureUnit) = 0;
+
+  /**
+   * Returns the image format of the texture. Only valid after
+   * DirectUpdate has been called.
+   */
+  virtual gfx::SurfaceFormat GetTextureFormat() { return mTextureFormat; }
+
+  /** Can be called safely at any time. */
+
+  /**
+   * If this TextureImage has a permanent gfxASurface backing,
+   * return it.  Otherwise return nullptr.
+   */
+  virtual already_AddRefed<gfxASurface> GetBackingSurface() { return nullptr; }
+
+  gfx::IntSize GetSize() const;
+  ContentType GetContentType() const { return mContentType; }
+  GLenum GetWrapMode() const { return mWrapMode; }
+
+  void SetSamplingFilter(gfx::SamplingFilter aSamplingFilter) {
+    mSamplingFilter = aSamplingFilter;
+  }
+
+ protected:
+  friend class GLContext;
+
+  void UpdateUploadSize(size_t amount);
+
+  /**
+   * After the ctor, the TextureImage is invalid.  Implementations
+   * must allocate resources successfully before returning the new
+   * TextureImage from GLContext::CreateTextureImage().  That is,
+   * clients must not be given partially-constructed TextureImages.
+   */
+  TextureImage(const gfx::IntSize& aSize, GLenum aWrapMode,
+               ContentType aContentType, Flags aFlags = NoFlags);
+
+  // Protected destructor, to discourage deletion outside of Release():
+  virtual ~TextureImage() { UpdateUploadSize(0); }
+
+  virtual gfx::IntRect GetSrcTileRect();
+
+  gfx::IntSize mSize;
+  GLenum mWrapMode;
+  ContentType mContentType;
+  gfx::SurfaceFormat mTextureFormat;
+  gfx::SamplingFilter mSamplingFilter;
+  Flags mFlags;
+  size_t mUploadSize;
+};
+
+/**
+ * BasicTextureImage is the baseline TextureImage implementation ---
+ * it updates its texture by allocating a scratch buffer for the
+ * client to draw into, then using glTexSubImage2D() to upload the new
+ * pixels.  Platforms must provide the code to create a new surface
+ * into which the updated pixels will be drawn, and the code to
+ * convert the update surface's pixels into an image on which we can
+ * glTexSubImage2D().
+ */
+class BasicTextureImage : public TextureImage {
+ public:
+  virtual ~BasicTextureImage();
+
+  BasicTextureImage(GLuint aTexture, const gfx::IntSize& aSize,
+                    GLenum aWrapMode, ContentType aContentType,
+                    GLContext* aContext,
+                    TextureImage::Flags aFlags = TextureImage::NoFlags);
+
+  void BindTexture(GLenum aTextureUnit) override;
+
+  bool DirectUpdate(
+      gfx::DataSourceSurface* aSurf, const nsIntRegion& aRegion,
+      const gfx::IntPoint& aSrcOffset = gfx::IntPoint(0, 0),
+      const gfx::IntPoint& aDstOffset = gfx::IntPoint(0, 0)) override;
+  GLuint GetTextureID() override { return mTexture; }
+
+  void MarkValid() override { mTextureState = Valid; }
+
+  void Resize(const gfx::IntSize& aSize) override;
+
+ protected:
+  GLuint mTexture;
+  TextureState mTextureState;
+  RefPtr<GLContext> mGLContext;
+};
+
+/**
+ * A container class that complements many sub TextureImages into a big
+ * TextureImage. Aims to behave just like the real thing.
+ */
+
+class TiledTextureImage final : public TextureImage {
+ public:
+  TiledTextureImage(
+      GLContext* aGL, gfx::IntSize aSize, TextureImage::ContentType,
+      TextureImage::Flags aFlags = TextureImage::NoFlags,
+      TextureImage::ImageFormat aImageFormat = gfx::SurfaceFormat::UNKNOWN);
+  virtual ~TiledTextureImage();
+  void DumpDiv();
+  void Resize(const gfx::IntSize& aSize) override;
+  uint32_t GetTileCount() override;
+  void BeginBigImageIteration() override;
+  bool NextTile() override;
+  void SetIterationCallback(BigImageIterationCallback aCallback,
+                            void* aCallbackData) override;
+  gfx::IntRect GetTileRect() override;
+  GLuint GetTextureID() override {
+    return mImages[mCurrentImage]->GetTextureID();
+  }
+  bool DirectUpdate(
+      gfx::DataSourceSurface* aSurf, const nsIntRegion& aRegion,
+      const gfx::IntPoint& aSrcOffset = gfx::IntPoint(0, 0),
+      const gfx::IntPoint& aDstOffset = gfx::IntPoint(0, 0)) override;
+  void BindTexture(GLenum) override;
+
+ protected:
+  gfx::IntRect GetSrcTileRect() override;
+
+  unsigned int mCurrentImage;
+  BigImageIterationCallback mIterationCallback;
+  void* mIterationCallbackData;
+  nsTArray<RefPtr<TextureImage> > mImages;
+  unsigned int mTileSize;
+  unsigned int mRows, mColumns;
+  GLContext* mGL;
+  TextureState mTextureState;
+  TextureImage::ImageFormat mImageFormat;
+};
+
+/**
+ * Creates a TextureImage of the basic implementation, can be useful in cases
+ * where we know we don't want to use platform-specific TextureImage.
+ * In doubt, use GLContext::CreateTextureImage instead.
+ */
+already_AddRefed<TextureImage> CreateBasicTextureImage(
+    GLContext* aGL, const gfx::IntSize& aSize,
+    TextureImage::ContentType aContentType, GLenum aWrapMode,
+    TextureImage::Flags aFlags);
+
+/**
+ * Creates a TiledTextureImage backed by platform-specific or basic
+ * TextureImages. In doubt, use GLContext::CreateTextureImage instead.
+ */
+already_AddRefed<TextureImage> CreateTiledTextureImage(
+    GLContext* aGL, const gfx::IntSize& aSize,
+    TextureImage::ContentType aContentType, TextureImage::Flags aFlags,
+    TextureImage::ImageFormat aImageFormat);
+
+/**
+ * Return a valid, allocated TextureImage of |aSize| with
+ * |aContentType|.  If |aContentType| is COLOR, |aImageFormat| can be used
+ * to hint at the preferred RGB format, however it is not necessarily
+ * respected.  The TextureImage's texture is configured to use
+ * |aWrapMode| (usually GL_CLAMP_TO_EDGE or GL_REPEAT) and by
+ * default, GL_LINEAR filtering.  Specify
+ * |aFlags=UseNearestFilter| for GL_NEAREST filtering. Specify
+ * |aFlags=OriginBottomLeft| if the image is origin-bottom-left, instead of the
+ * default origin-top-left. Return
+ * nullptr if creating the TextureImage fails.
+ *
+ * The returned TextureImage may only be used with this GLContext.
+ * Attempting to use the returned TextureImage after this
+ * GLContext is destroyed will result in undefined (and likely
+ * crashy) behavior.
+ */
+already_AddRefed<TextureImage> CreateTextureImage(
+    GLContext* gl, const gfx::IntSize& aSize,
+    TextureImage::ContentType aContentType, GLenum aWrapMode,
+    TextureImage::Flags aFlags = TextureImage::NoFlags,
+    TextureImage::ImageFormat aImageFormat = gfx::SurfaceFormat::UNKNOWN);
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif /* GLTEXTUREIMAGE_H_ */
diff --git a/gfx/gl/GLTypes.h b/gfx/gl/GLTypes.h
new file mode 100644
index 0000000000..f5b317b4b7
--- /dev/null
+++ b/gfx/gl/GLTypes.h
@@ -0,0 +1,115 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLTYPES_H_
+#define GLTYPES_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifndef GLAPIENTRY
+#  ifdef WIN32
+#    include <windef.h>
+#    define GLAPIENTRY APIENTRY
+#    define GLAPI
+#  else
+#    define GLAPIENTRY
+#    define GLAPI
+#  endif
+#endif
+
+typedef uint8_t realGLboolean;
+
+#if !defined(__gltypes_h_) && !defined(__gl_h_)
+#  define __gltypes_h_
+#  define __gl_h_
+
+typedef uint32_t GLenum;
+typedef uint32_t GLbitfield;
+typedef uint32_t GLuint;
+typedef int32_t GLint;
+typedef int32_t GLsizei;
+typedef int8_t GLbyte;
+typedef int16_t GLshort;
+typedef uint8_t GLubyte;
+typedef uint16_t GLushort;
+typedef float GLfloat;
+typedef float GLclampf;
+#  ifndef GLdouble_defined
+typedef double GLdouble;
+#  endif
+typedef double GLclampd;
+typedef void GLvoid;
+
+typedef char GLchar;
+#  ifndef __gl2_h_
+#    ifdef _WIN64
+typedef signed long long int GLintptr;
+typedef signed long long int GLsizeiptr;
+#    else
+typedef signed long int GLintptr;
+typedef signed long int GLsizeiptr;
+#    endif
+#  endif
+
+#endif /* #if !defined(__gltypes_h_) && !defined(__gl_h_) */
+
+#include <stdint.h>
+
+// ARB_sync
+typedef struct __GLsync* GLsync;
+typedef int64_t GLint64;
+typedef uint64_t GLuint64;
+
+// OES_EGL_image (GLES)
+typedef void* GLeglImage;
+
+// KHR_debug
+typedef void(GLAPIENTRY* GLDEBUGPROC)(GLenum source, GLenum type, GLuint id,
+                                      GLenum severity, GLsizei length,
+                                      const GLchar* message,
+                                      const GLvoid* userParam);
+
+// EGL types
+typedef void* EGLImage;
+typedef int EGLint;
+typedef unsigned int EGLBoolean;
+typedef unsigned int EGLenum;
+typedef intptr_t EGLAttrib;
+typedef void* EGLConfig;
+typedef void* EGLContext;
+typedef void* EGLDisplay;
+typedef void* EGLDeviceEXT;
+typedef void* EGLSurface;
+typedef void* EGLClientBuffer;
+typedef void* EGLCastToRelevantPtr;
+typedef void* EGLImage;
+typedef void* EGLSync;
+typedef void* EGLStreamKHR;
+typedef uint64_t EGLTime;
+
+#define EGL_NO_CONTEXT ((EGLContext)0)
+#define EGL_NO_DISPLAY ((EGLDisplay)0)
+#define EGL_NO_SURFACE ((EGLSurface)0)
+#define EGL_NO_CONFIG ((EGLConfig) nullptr)
+#define EGL_NO_SYNC ((EGLSync)0)
+#define EGL_NO_IMAGE ((EGLImage)0)
+
+#ifdef XP_WIN
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN 1
+#  endif
+
+#  include <windef.h>
+
+typedef HDC EGLNativeDisplayType;
+typedef HBITMAP EGLNativePixmapType;
+typedef HWND EGLNativeWindowType;
+#else
+typedef void* EGLNativeDisplayType;
+typedef void* EGLNativePixmapType;
+typedef void* EGLNativeWindowType;
+#endif
+
+#endif  // GLTYPES_H_
diff --git a/gfx/gl/GLUploadHelpers.cpp b/gfx/gl/GLUploadHelpers.cpp
new file mode 100644
index 0000000000..c6efcfd656
--- /dev/null
+++ b/gfx/gl/GLUploadHelpers.cpp
@@ -0,0 +1,518 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLUploadHelpers.h"
+
+#include "GLContext.h"
+#include "mozilla/gfx/2D.h"
+#include "gfxUtils.h"
+#include "mozilla/gfx/Tools.h"  // For BytesPerPixel
+#include "nsRegion.h"
+#include "GfxTexturesReporter.h"
+#include "mozilla/gfx/Logging.h"
+
+namespace mozilla {
+
+using namespace gfx;
+
+namespace gl {
+
+static unsigned int DataOffset(const IntPoint& aPoint, int32_t aStride,
+                               SurfaceFormat aFormat) {
+  unsigned int data = aPoint.y * aStride;
+  data += aPoint.x * BytesPerPixel(aFormat);
+  return data;
+}
+
+static bool CheckUploadBounds(const IntSize& aDst, const IntSize& aSrc,
+                              const IntPoint& aOffset) {
+  if (aOffset.x < 0 || aOffset.y < 0 || aOffset.x >= aSrc.width ||
+      aOffset.y >= aSrc.height) {
+    MOZ_ASSERT_UNREACHABLE("Offset outside source bounds");
+    return false;
+  }
+  if (aDst.width > (aSrc.width - aOffset.x) ||
+      aDst.height > (aSrc.height - aOffset.y)) {
+    MOZ_ASSERT_UNREACHABLE("Source has insufficient data");
+    return false;
+  }
+  return true;
+}
+
+static GLint GetAddressAlignment(ptrdiff_t aAddress) {
+  if (!(aAddress & 0x7)) {
+    return 8;
+  } else if (!(aAddress & 0x3)) {
+    return 4;
+  } else if (!(aAddress & 0x1)) {
+    return 2;
+  } else {
+    return 1;
+  }
+}
+
+// Take texture data in a given buffer and copy it into a larger buffer,
+// padding out the edge pixels for filtering if necessary
+static void CopyAndPadTextureData(const GLvoid* srcBuffer, GLvoid* dstBuffer,
+                                  GLsizei srcWidth, GLsizei srcHeight,
+                                  GLsizei dstWidth, GLsizei dstHeight,
+                                  GLsizei stride, GLint pixelsize) {
+  unsigned char* rowDest = static_cast<unsigned char*>(dstBuffer);
+  const unsigned char* source = static_cast<const unsigned char*>(srcBuffer);
+
+  for (GLsizei h = 0; h < srcHeight; ++h) {
+    memcpy(rowDest, source, srcWidth * pixelsize);
+    rowDest += dstWidth * pixelsize;
+    source += stride;
+  }
+
+  GLsizei padHeight = srcHeight;
+
+  // Pad out an extra row of pixels so that edge filtering doesn't use garbage
+  // data
+  if (dstHeight > srcHeight) {
+    memcpy(rowDest, source - stride, srcWidth * pixelsize);
+    padHeight++;
+  }
+
+  // Pad out an extra column of pixels
+  if (dstWidth > srcWidth) {
+    rowDest = static_cast<unsigned char*>(dstBuffer) + srcWidth * pixelsize;
+    for (GLsizei h = 0; h < padHeight; ++h) {
+      memcpy(rowDest, rowDest - pixelsize, pixelsize);
+      rowDest += dstWidth * pixelsize;
+    }
+  }
+}
+
+// In both of these cases (for the Adreno at least) it is impossible
+// to determine good or bad driver versions for POT texture uploads,
+// so blacklist them all. Newer drivers use a different rendering
+// string in the form "Adreno (TM) 200" and the drivers we've seen so
+// far work fine with NPOT textures, so don't blacklist those until we
+// have evidence of any problems with them.
+bool ShouldUploadSubTextures(GLContext* gl) {
+  if (!gl->WorkAroundDriverBugs()) return true;
+
+  // There are certain GPUs that we don't want to use glTexSubImage2D on
+  // because that function can be very slow and/or buggy
+  if (gl->Renderer() == GLRenderer::Adreno200 ||
+      gl->Renderer() == GLRenderer::Adreno205) {
+    return false;
+  }
+
+  // On PowerVR glTexSubImage does a readback, so it will be slower
+  // than just doing a glTexImage2D() directly. i.e. 26ms vs 10ms
+  if (gl->Renderer() == GLRenderer::SGX540 ||
+      gl->Renderer() == GLRenderer::SGX530) {
+    return false;
+  }
+
+  return true;
+}
+
+static void TexSubImage2DWithUnpackSubimageGLES(
+    GLContext* gl, GLenum target, GLint level, GLint xoffset, GLint yoffset,
+    GLsizei width, GLsizei height, GLsizei stride, GLint pixelsize,
+    GLenum format, GLenum type, const GLvoid* pixels) {
+  gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
+                   std::min(GetAddressAlignment((ptrdiff_t)pixels),
+                            GetAddressAlignment((ptrdiff_t)stride)));
+  // When using GL_UNPACK_ROW_LENGTH, we need to work around a Tegra
+  // driver crash where the driver apparently tries to read
+  // (stride - width * pixelsize) bytes past the end of the last input
+  // row. We only upload the first height-1 rows using GL_UNPACK_ROW_LENGTH,
+  // and then we upload the final row separately. See bug 697990.
+  int rowLength = stride / pixelsize;
+  if (gl->HasPBOState()) {
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
+    gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format,
+                       type, pixels);
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
+  } else {
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
+    gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height - 1,
+                       format, type, pixels);
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
+    gl->fTexSubImage2D(target, level, xoffset, yoffset + height - 1, width, 1,
+                       format, type,
+                       (const unsigned char*)pixels + (height - 1) * stride);
+  }
+  gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
+}
+
+static void TexSubImage2DWithoutUnpackSubimage(
+    GLContext* gl, GLenum target, GLint level, GLint xoffset, GLint yoffset,
+    GLsizei width, GLsizei height, GLsizei stride, GLint pixelsize,
+    GLenum format, GLenum type, const GLvoid* pixels) {
+  // Not using the whole row of texture data and GL_UNPACK_ROW_LENGTH
+  // isn't supported. We make a copy of the texture data we're using,
+  // such that we're using the whole row of data in the copy. This turns
+  // out to be more efficient than uploading row-by-row; see bug 698197.
+
+  // Width and height are never more than 16384. At 16Ki*16Ki, 4bpp is 1GiB, but
+  // if we allow 8bpp (or higher) here, that's 2GiB, which would overflow on
+  // 32-bit.
+  MOZ_ASSERT(width <= 16384);
+  MOZ_ASSERT(height <= 16384);
+  MOZ_ASSERT(pixelsize < 8);
+
+  const auto size = CheckedInt<size_t>(width) * height * pixelsize;
+  if (!size.isValid()) {
+    // This should never happen, but we use a defensive check.
+    MOZ_ASSERT_UNREACHABLE("Unacceptable size calculated.!");
+    return;
+  }
+
+  unsigned char* newPixels = new (fallible) unsigned char[size.value()];
+
+  if (newPixels) {
+    unsigned char* rowDest = newPixels;
+    const unsigned char* rowSource = (const unsigned char*)pixels;
+    for (int h = 0; h < height; h++) {
+      memcpy(rowDest, rowSource, width * pixelsize);
+      rowDest += width * pixelsize;
+      rowSource += stride;
+    }
+
+    stride = width * pixelsize;
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
+                     std::min(GetAddressAlignment((ptrdiff_t)newPixels),
+                              GetAddressAlignment((ptrdiff_t)stride)));
+    gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format,
+                       type, newPixels);
+    delete[] newPixels;
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
+
+  } else {
+    // If we did not have sufficient memory for the required
+    // temporary buffer, then fall back to uploading row-by-row.
+    const unsigned char* rowSource = (const unsigned char*)pixels;
+
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
+                     std::min(GetAddressAlignment((ptrdiff_t)pixels),
+                              GetAddressAlignment((ptrdiff_t)stride)));
+
+    for (int i = 0; i < height; i++) {
+      gl->fTexSubImage2D(target, level, xoffset, yoffset + i, width, 1, format,
+                         type, rowSource);
+      rowSource += stride;
+    }
+
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
+  }
+}
+static void TexSubImage2DHelper(GLContext* gl, GLenum target, GLint level,
+                                GLint xoffset, GLint yoffset, GLsizei width,
+                                GLsizei height, GLsizei stride, GLint pixelsize,
+                                GLenum format, GLenum type,
+                                const GLvoid* pixels) {
+  if (gl->IsGLES()) {
+    if (stride == width * pixelsize) {
+      gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
+                       std::min(GetAddressAlignment((ptrdiff_t)pixels),
+                                GetAddressAlignment((ptrdiff_t)stride)));
+      gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format,
+                         type, pixels);
+      gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
+    } else if (gl->IsExtensionSupported(GLContext::EXT_unpack_subimage) ||
+               gl->HasPBOState()) {
+      TexSubImage2DWithUnpackSubimageGLES(gl, target, level, xoffset, yoffset,
+                                          width, height, stride, pixelsize,
+                                          format, type, pixels);
+
+    } else {
+      TexSubImage2DWithoutUnpackSubimage(gl, target, level, xoffset, yoffset,
+                                         width, height, stride, pixelsize,
+                                         format, type, pixels);
+    }
+  } else {
+    // desktop GL (non-ES) path
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
+                     std::min(GetAddressAlignment((ptrdiff_t)pixels),
+                              GetAddressAlignment((ptrdiff_t)stride)));
+    int rowLength = stride / pixelsize;
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
+    gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format,
+                       type, pixels);
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
+  }
+}
+
+static void TexImage2DHelper(GLContext* gl, GLenum target, GLint level,
+                             GLint internalformat, GLsizei width,
+                             GLsizei height, GLsizei stride, GLint pixelsize,
+                             GLint border, GLenum format, GLenum type,
+                             const GLvoid* pixels) {
+  if (gl->IsGLES()) {
+    NS_ASSERTION(
+        format == (GLenum)internalformat,
+        "format and internalformat not the same for glTexImage2D on GLES2");
+
+    MOZ_ASSERT(width >= 0 && height >= 0);
+    if (!CanUploadNonPowerOfTwo(gl) &&
+        (stride != width * pixelsize || !IsPowerOfTwo((uint32_t)width) ||
+         !IsPowerOfTwo((uint32_t)height))) {
+      // Pad out texture width and height to the next power of two
+      // as we don't support/want non power of two texture uploads
+      GLsizei paddedWidth = RoundUpPow2((uint32_t)width);
+      GLsizei paddedHeight = RoundUpPow2((uint32_t)height);
+
+      // Width and height are never more than 16384. At 16Ki*16Ki, 4bpp is 1GiB,
+      // but if we allow 8bpp (or higher) here, that's 2GiB, which would
+      // overflow on 32-bit.
+      MOZ_ASSERT(width <= 16384);
+      MOZ_ASSERT(height <= 16384);
+      MOZ_ASSERT(pixelsize < 8);
+
+      const auto size =
+          CheckedInt<size_t>(paddedWidth) * paddedHeight * pixelsize;
+      if (!size.isValid()) {
+        // This should never happen, but we use a defensive check.
+        MOZ_ASSERT_UNREACHABLE("Unacceptable size calculated.!");
+        return;
+      }
+
+      GLvoid* paddedPixels = new unsigned char[size.value()];
+
+      // Pad out texture data to be in a POT sized buffer for uploading to
+      // a POT sized texture
+      CopyAndPadTextureData(pixels, paddedPixels, width, height, paddedWidth,
+                            paddedHeight, stride, pixelsize);
+
+      gl->fPixelStorei(
+          LOCAL_GL_UNPACK_ALIGNMENT,
+          std::min(GetAddressAlignment((ptrdiff_t)paddedPixels),
+                   GetAddressAlignment((ptrdiff_t)paddedWidth * pixelsize)));
+      gl->fTexImage2D(target, border, internalformat, paddedWidth, paddedHeight,
+                      border, format, type, paddedPixels);
+      gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
+
+      delete[] static_cast<unsigned char*>(paddedPixels);
+      return;
+    }
+
+    if (stride == width * pixelsize) {
+      gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
+                       std::min(GetAddressAlignment((ptrdiff_t)pixels),
+                                GetAddressAlignment((ptrdiff_t)stride)));
+      gl->fTexImage2D(target, border, internalformat, width, height, border,
+                      format, type, pixels);
+      gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
+    } else {
+      // Use GLES-specific workarounds for GL_UNPACK_ROW_LENGTH; these are
+      // implemented in TexSubImage2D.
+      gl->fTexImage2D(target, border, internalformat, width, height, border,
+                      format, type, nullptr);
+      TexSubImage2DHelper(gl, target, level, 0, 0, width, height, stride,
+                          pixelsize, format, type, pixels);
+    }
+  } else {
+    // desktop GL (non-ES) path
+
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
+                     std::min(GetAddressAlignment((ptrdiff_t)pixels),
+                              GetAddressAlignment((ptrdiff_t)stride)));
+    int rowLength = stride / pixelsize;
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
+    gl->fTexImage2D(target, level, internalformat, width, height, border,
+                    format, type, pixels);
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
+    gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
+  }
+}
+
+SurfaceFormat UploadImageDataToTexture(
+    GLContext* gl, unsigned char* aData, const gfx::IntSize& aDataSize,
+    const IntPoint& aDstOffset, int32_t aStride, SurfaceFormat aFormat,
+    const nsIntRegion& aDstRegion, GLuint aTexture, const gfx::IntSize& aSize,
+    size_t* aOutUploadSize, bool aNeedInit, GLenum aTextureUnit,
+    GLenum aTextureTarget) {
+  gl->MakeCurrent();
+  gl->fActiveTexture(aTextureUnit);
+  gl->fBindTexture(aTextureTarget, aTexture);
+
+  GLenum format = 0;
+  GLenum internalFormat = 0;
+  GLenum type = 0;
+  int32_t pixelSize = BytesPerPixel(aFormat);
+  SurfaceFormat surfaceFormat = gfx::SurfaceFormat::UNKNOWN;
+
+  MOZ_ASSERT(gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA ||
+             gl->GetPreferredARGB32Format() == LOCAL_GL_RGBA);
+
+  switch (aFormat) {
+    case SurfaceFormat::B8G8R8A8:
+      if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
+        format = LOCAL_GL_BGRA;
+        surfaceFormat = SurfaceFormat::R8G8B8A8;
+        type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
+      } else {
+        format = LOCAL_GL_RGBA;
+        surfaceFormat = SurfaceFormat::B8G8R8A8;
+        type = LOCAL_GL_UNSIGNED_BYTE;
+      }
+      internalFormat = LOCAL_GL_RGBA;
+      break;
+    case SurfaceFormat::B8G8R8X8:
+      // Treat BGRX surfaces as BGRA except for the surface
+      // format used.
+      if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
+        format = LOCAL_GL_BGRA;
+        surfaceFormat = SurfaceFormat::R8G8B8X8;
+        type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
+      } else {
+        format = LOCAL_GL_RGBA;
+        surfaceFormat = SurfaceFormat::B8G8R8X8;
+        type = LOCAL_GL_UNSIGNED_BYTE;
+      }
+      internalFormat = LOCAL_GL_RGBA;
+      break;
+    case SurfaceFormat::R8G8B8A8:
+      if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
+        // Upload our RGBA as BGRA, but store that the uploaded format is
+        // BGRA. (sample from R to get B)
+        format = LOCAL_GL_BGRA;
+        type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
+        surfaceFormat = SurfaceFormat::B8G8R8A8;
+      } else {
+        format = LOCAL_GL_RGBA;
+        type = LOCAL_GL_UNSIGNED_BYTE;
+        surfaceFormat = SurfaceFormat::R8G8B8A8;
+      }
+      internalFormat = LOCAL_GL_RGBA;
+      break;
+    case SurfaceFormat::R8G8B8X8:
+      // Treat RGBX surfaces as RGBA except for the surface
+      // format used.
+      if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
+        format = LOCAL_GL_BGRA;
+        type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
+        surfaceFormat = SurfaceFormat::B8G8R8X8;
+      } else {
+        format = LOCAL_GL_RGBA;
+        type = LOCAL_GL_UNSIGNED_BYTE;
+        surfaceFormat = SurfaceFormat::R8G8B8X8;
+      }
+      internalFormat = LOCAL_GL_RGBA;
+      break;
+    case SurfaceFormat::R5G6B5_UINT16:
+      internalFormat = format = LOCAL_GL_RGB;
+      type = LOCAL_GL_UNSIGNED_SHORT_5_6_5;
+      surfaceFormat = SurfaceFormat::R5G6B5_UINT16;
+      break;
+    case SurfaceFormat::A8:
+      if (gl->IsGLES()) {
+        format = LOCAL_GL_LUMINANCE;
+        internalFormat = LOCAL_GL_LUMINANCE;
+      } else {
+        format = LOCAL_GL_RED;
+        internalFormat = LOCAL_GL_R8;
+      }
+      type = LOCAL_GL_UNSIGNED_BYTE;
+      // We don't have a specific luminance shader
+      surfaceFormat = SurfaceFormat::A8;
+      break;
+    case SurfaceFormat::A16:
+      if (gl->IsGLES()) {
+        format = LOCAL_GL_LUMINANCE;
+        internalFormat = LOCAL_GL_LUMINANCE16;
+      } else {
+        format = LOCAL_GL_RED;
+        internalFormat = LOCAL_GL_R16;
+      }
+      type = LOCAL_GL_UNSIGNED_SHORT;
+      // We don't have a specific luminance shader
+      surfaceFormat = SurfaceFormat::A8;
+      pixelSize = 2;
+      break;
+    default:
+      MOZ_ASSERT_UNREACHABLE("Unhandled image surface format!");
+  }
+
+  if (aOutUploadSize) {
+    *aOutUploadSize = 0;
+  }
+
+  if (surfaceFormat == gfx::SurfaceFormat::UNKNOWN) {
+    return gfx::SurfaceFormat::UNKNOWN;
+  }
+
+  // We can only skip SubTextures if aOffset = 0 because we need the whole
+  // buffer
+  if (aNeedInit || (!ShouldUploadSubTextures(gl) && aDstOffset == IntPoint())) {
+    if (!CheckUploadBounds(aSize, aDataSize, IntPoint())) {
+      return SurfaceFormat::UNKNOWN;
+    }
+    // If the texture needs initialized, or we are unable to
+    // upload sub textures, then initialize and upload the entire
+    // texture.
+    TexImage2DHelper(gl, aTextureTarget, 0, internalFormat, aSize.width,
+                     aSize.height, aStride, pixelSize, 0, format, type, aData);
+
+    if (aOutUploadSize && aNeedInit) {
+      uint32_t texelSize = GetBytesPerTexel(internalFormat, type);
+      size_t numTexels = size_t(aSize.width) * size_t(aSize.height);
+      *aOutUploadSize += texelSize * numTexels;
+    }
+  } else {
+    // Upload each rect in the region to the texture
+    for (auto iter = aDstRegion.RectIter(); !iter.Done(); iter.Next()) {
+      IntRect rect = iter.Get();
+      if (!CheckUploadBounds(rect.Size(), aDataSize, rect.TopLeft())) {
+        return SurfaceFormat::UNKNOWN;
+      }
+
+      const unsigned char* rectData =
+          aData + DataOffset(rect.TopLeft(), aStride, aFormat);
+
+      rect += aDstOffset;
+      TexSubImage2DHelper(gl, aTextureTarget, 0, rect.X(), rect.Y(),
+                          rect.Width(), rect.Height(), aStride, pixelSize,
+                          format, type, rectData);
+    }
+  }
+
+  return surfaceFormat;
+}
+
+SurfaceFormat UploadSurfaceToTexture(GLContext* gl, DataSourceSurface* aSurface,
+                                     const nsIntRegion& aDstRegion,
+                                     GLuint aTexture, const gfx::IntSize& aSize,
+                                     size_t* aOutUploadSize, bool aNeedInit,
+                                     const gfx::IntPoint& aSrcOffset,
+                                     const gfx::IntPoint& aDstOffset,
+                                     GLenum aTextureUnit,
+                                     GLenum aTextureTarget) {
+  DataSourceSurface::ScopedMap map(aSurface, DataSourceSurface::READ);
+  int32_t stride = map.GetStride();
+  SurfaceFormat format = aSurface->GetFormat();
+  gfx::IntSize size = aSurface->GetSize();
+
+  // only fail if we'll need the entire surface for initialization
+  if (aNeedInit && !CheckUploadBounds(aSize, size, aSrcOffset)) {
+    return SurfaceFormat::UNKNOWN;
+  }
+
+  unsigned char* data = map.GetData() + DataOffset(aSrcOffset, stride, format);
+  size.width -= aSrcOffset.x;
+  size.height -= aSrcOffset.y;
+
+  return UploadImageDataToTexture(gl, data, size, aDstOffset, stride, format,
+                                  aDstRegion, aTexture, aSize, aOutUploadSize,
+                                  aNeedInit, aTextureUnit, aTextureTarget);
+}
+
+bool CanUploadNonPowerOfTwo(GLContext* gl) {
+  if (!gl->WorkAroundDriverBugs()) return true;
+
+  // Some GPUs driver crash when uploading non power of two 565 textures.
+  return gl->Renderer() != GLRenderer::Adreno200 &&
+         gl->Renderer() != GLRenderer::Adreno205;
+}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/GLUploadHelpers.h b/gfx/gl/GLUploadHelpers.h
new file mode 100644
index 0000000000..3bf071fd0b
--- /dev/null
+++ b/gfx/gl/GLUploadHelpers.h
@@ -0,0 +1,77 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLUploadHelpers_h_
+#define GLUploadHelpers_h_
+
+#include "GLDefs.h"
+#include "mozilla/gfx/Types.h"
+#include "nsPoint.h"
+#include "nsRegionFwd.h"
+
+namespace mozilla {
+
+namespace gfx {
+class DataSourceSurface;
+}  // namespace gfx
+
+namespace gl {
+
+class GLContext;
+
+/**
+ * Uploads image data to an OpenGL texture, initializing the texture
+ * first if necessary.
+ *
+ * \param gl The GL Context to use.
+ * \param aData Start of image data of surface to upload.
+ *              Corresponds to the first pixel of the texture.
+ * \param aDataSize The image data's size.
+ * \param aStride The image data's stride.
+ * \param aFormat The image data's format.
+ * \param aDstRegion Region of the texture to upload.
+ * \param aTexture The OpenGL texture to use. Must refer to a valid texture.
+ * \param aSize The full size of the texture.
+ * \param aOutUploadSize If set, the number of bytes the texture requires will
+ *                       be returned here.
+ * \param aNeedInit Indicates whether a new texture must be allocated.
+ * \param aTextureUnit The texture unit used temporarily to upload the surface.
+ *                     This may be overridden, so clients should not rely on
+ *                     the aTexture being bound to aTextureUnit after this call,
+ *                     or even on aTextureUnit being active.
+ * \param aTextureTarget The texture target to use.
+ * \return Surface format of this texture.
+ */
+gfx::SurfaceFormat UploadImageDataToTexture(
+    GLContext* gl, unsigned char* aData, const gfx::IntSize& aDataSize,
+    const gfx::IntPoint& aDstOffset, int32_t aStride,
+    gfx::SurfaceFormat aFormat, const nsIntRegion& aDstRegion, GLuint aTexture,
+    const gfx::IntSize& aSize, size_t* aOutUploadSize = nullptr,
+    bool aNeedInit = false, GLenum aTextureUnit = LOCAL_GL_TEXTURE0,
+    GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D);
+
+/**
+ * Convenience wrapper around UploadImageDataToTexture for
+ * gfx::DataSourceSurface's.
+ *
+ * \param aSurface The surface from which to upload image data.
+ * \param aSrcPoint Offset into aSurface where this texture's data begins.
+ */
+gfx::SurfaceFormat UploadSurfaceToTexture(
+    GLContext* gl, gfx::DataSourceSurface* aSurface,
+    const nsIntRegion& aDstRegion, GLuint aTexture, const gfx::IntSize& aSize,
+    size_t* aOutUploadSize = nullptr, bool aNeedInit = false,
+    const gfx::IntPoint& aSrcOffset = gfx::IntPoint(0, 0),
+    const gfx::IntPoint& aDstOffset = gfx::IntPoint(0, 0),
+    GLenum aTextureUnit = LOCAL_GL_TEXTURE0,
+    GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D);
+
+bool ShouldUploadSubTextures(GLContext* gl);
+bool CanUploadNonPowerOfTwo(GLContext* gl);
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif
diff --git a/gfx/gl/GLVendor.h b/gfx/gl/GLVendor.h
new file mode 100644
index 0000000000..ca5d985146
--- /dev/null
+++ b/gfx/gl/GLVendor.h
@@ -0,0 +1,20 @@
+/* -*- mode: c++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* this source code form is subject to the terms of the mozilla public
+ * license, v. 2.0. if a copy of the mpl was not distributed with this
+ * file, you can obtain one at http://mozilla.org/mpl/2.0/. */
+
+#ifndef GLVENDOR_H_
+#define GLVENDOR_H_
+
+#include "mozilla/DefineEnum.h"
+
+namespace mozilla {
+namespace gl {
+MOZ_DEFINE_ENUM(GLVendor, (Intel, NVIDIA, ATI, Qualcomm, Imagination, Nouveau,
+                           Vivante, VMware, ARM, Other));
+
+}
+}  // namespace mozilla
+
+#endif /* GLVENDOR_H_ */
diff --git a/gfx/gl/GLXLibrary.h b/gfx/gl/GLXLibrary.h
new file mode 100644
index 0000000000..7a004762ff
--- /dev/null
+++ b/gfx/gl/GLXLibrary.h
@@ -0,0 +1,284 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GFX_GLXLIBRARY_H
+#define GFX_GLXLIBRARY_H
+
+#include "GLContextTypes.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/gfx/XlibDisplay.h"
+#include "prlink.h"
+typedef realGLboolean GLboolean;
+
+// stuff from glx.h
+#include "X11/Xlib.h"
+#include "X11/Xutil.h"  // for XVisualInfo
+#include "X11UndefineNone.h"
+typedef struct __GLXcontextRec* GLXContext;
+typedef XID GLXPixmap;
+typedef XID GLXDrawable;
+/* GLX 1.3 and later */
+typedef struct __GLXFBConfigRec* GLXFBConfig;
+// end of stuff from glx.h
+#include "prenv.h"
+
+struct PRLibrary;
+class gfxASurface;
+
+namespace mozilla {
+namespace gl {
+
+class GLContextGLX;
+
+class GLXLibrary final {
+ public:
+  bool EnsureInitialized(Display* aDisplay);
+
+ private:
+  class WrapperScope final {
+    const GLXLibrary& mGlx;
+    const char* const mFuncName;
+    Display* const mDisplay;
+
+   public:
+    WrapperScope(const GLXLibrary& glx, const char* const funcName,
+                 Display* aDisplay);
+    ~WrapperScope();
+  };
+
+ public:
+#ifdef DEBUG
+#  define DECL_WRAPPER_SCOPE(display) \
+    const WrapperScope wrapperScope(*this, __func__, display);
+#else
+#  define DECL_WRAPPER_SCOPE(display)
+#endif
+
+  void fDestroyContext(Display* display, GLXContext context) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fDestroyContext(display, context);
+  }
+
+  Bool fMakeCurrent(Display* display, GLXDrawable drawable,
+                    GLXContext context) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fMakeCurrent(display, drawable, context);
+  }
+
+  XVisualInfo* fGetConfig(Display* display, XVisualInfo* info, int attrib,
+                          int* value) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fGetConfig(display, info, attrib, value);
+  }
+
+  GLXContext fGetCurrentContext() const {
+    DECL_WRAPPER_SCOPE(nullptr)
+    return mSymbols.fGetCurrentContext();
+  }
+
+  GLXFBConfig* fChooseFBConfig(Display* display, int screen,
+                               const int* attrib_list, int* nelements) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fChooseFBConfig(display, screen, attrib_list, nelements);
+  }
+
+  XVisualInfo* fChooseVisual(Display* display, int screen,
+                             int* attrib_list) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fChooseVisual(display, screen, attrib_list);
+  }
+
+  GLXFBConfig* fGetFBConfigs(Display* display, int screen,
+                             int* nelements) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fGetFBConfigs(display, screen, nelements);
+  }
+
+  GLXContext fCreateNewContext(Display* display, GLXFBConfig config,
+                               int render_type, GLXContext share_list,
+                               Bool direct) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fCreateNewContext(display, config, render_type, share_list,
+                                      direct);
+  }
+
+  int fGetFBConfigAttrib(Display* display, GLXFBConfig config, int attribute,
+                         int* value) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fGetFBConfigAttrib(display, config, attribute, value);
+  }
+
+  void fSwapBuffers(Display* display, GLXDrawable drawable) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fSwapBuffers(display, drawable);
+  }
+
+  const char* fQueryExtensionsString(Display* display, int screen) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fQueryExtensionsString(display, screen);
+  }
+
+  const char* fGetClientString(Display* display, int screen) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fGetClientString(display, screen);
+  }
+
+  const char* fQueryServerString(Display* display, int screen, int name) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fQueryServerString(display, screen, name);
+  }
+
+  GLXPixmap fCreatePixmap(Display* display, GLXFBConfig config, Pixmap pixmap,
+                          const int* attrib_list) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fCreatePixmap(display, config, pixmap, attrib_list);
+  }
+
+  GLXPixmap fCreateGLXPixmapWithConfig(Display* display, GLXFBConfig config,
+                                       Pixmap pixmap) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fCreateGLXPixmapWithConfig(display, config, pixmap);
+  }
+
+  void fDestroyPixmap(Display* display, GLXPixmap pixmap) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fDestroyPixmap(display, pixmap);
+  }
+
+  Bool fQueryVersion(Display* display, int* major, int* minor) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fQueryVersion(display, major, minor);
+  }
+
+  void fBindTexImage(Display* display, GLXDrawable drawable, int buffer,
+                     const int* attrib_list) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fBindTexImageEXT(display, drawable, buffer, attrib_list);
+  }
+
+  void fReleaseTexImage(Display* display, GLXDrawable drawable,
+                        int buffer) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fReleaseTexImageEXT(display, drawable, buffer);
+  }
+
+  void fWaitGL() const {
+    DECL_WRAPPER_SCOPE(nullptr)
+    return mSymbols.fWaitGL();
+  }
+
+  void fWaitX() const {
+    DECL_WRAPPER_SCOPE(nullptr)
+    return mSymbols.fWaitX();
+  }
+
+  GLXContext fCreateContextAttribs(Display* display, GLXFBConfig config,
+                                   GLXContext share_list, Bool direct,
+                                   const int* attrib_list) const {
+    DECL_WRAPPER_SCOPE(display)
+    return mSymbols.fCreateContextAttribsARB(display, config, share_list,
+                                             direct, attrib_list);
+  }
+
+  int fGetVideoSync(unsigned int* count) const {
+    DECL_WRAPPER_SCOPE(nullptr)
+    return mSymbols.fGetVideoSyncSGI(count);
+  }
+
+  int fWaitVideoSync(int divisor, int remainder, unsigned int* count) const {
+    DECL_WRAPPER_SCOPE(nullptr)
+    return mSymbols.fWaitVideoSyncSGI(divisor, remainder, count);
+  }
+
+  void fSwapInterval(Display* dpy, GLXDrawable drawable, int interval) const {
+    DECL_WRAPPER_SCOPE(dpy)
+    return mSymbols.fSwapIntervalEXT(dpy, drawable, interval);
+  }
+
+  int fQueryDrawable(Display* dpy, GLXDrawable drawable, int attribute,
+                     unsigned int* value) const {
+    DECL_WRAPPER_SCOPE(dpy)
+    return mSymbols.fQueryDrawable(dpy, drawable, attribute, value);
+  }
+#undef DECL_WRAPPER_SCOPE
+
+  ////
+
+  bool HasRobustness() { return mHasRobustness; }
+  bool HasVideoMemoryPurge() { return mHasVideoMemoryPurge; }
+  bool HasCreateContextAttribs() { return mHasCreateContextAttribs; }
+  bool SupportsTextureFromPixmap(gfxASurface* aSurface);
+  bool SupportsVideoSync(Display* aDisplay);
+  bool SupportsSwapControl() const { return bool(mSymbols.fSwapIntervalEXT); }
+  bool SupportsBufferAge() const {
+    MOZ_ASSERT(mInitialized);
+    return mHasBufferAge;
+  }
+  bool IsATI() { return mIsATI; }
+  bool IsMesa() { return mClientIsMesa; }
+
+  auto GetGetProcAddress() const { return mSymbols.fGetProcAddress; }
+
+  std::shared_ptr<gfx::XlibDisplay> GetDisplay();
+
+ private:
+  struct {
+    void(GLAPIENTRY* fDestroyContext)(Display*, GLXContext);
+    Bool(GLAPIENTRY* fMakeCurrent)(Display*, GLXDrawable, GLXContext);
+    XVisualInfo*(GLAPIENTRY* fGetConfig)(Display*, XVisualInfo*, int, int*);
+    GLXContext(GLAPIENTRY* fGetCurrentContext)();
+    void*(GLAPIENTRY* fGetProcAddress)(const char*);
+    GLXFBConfig*(GLAPIENTRY* fChooseFBConfig)(Display*, int, const int*, int*);
+    XVisualInfo*(GLAPIENTRY* fChooseVisual)(Display*, int, const int*);
+    GLXFBConfig*(GLAPIENTRY* fGetFBConfigs)(Display*, int, int*);
+    GLXContext(GLAPIENTRY* fCreateNewContext)(Display*, GLXFBConfig, int,
+                                              GLXContext, Bool);
+    int(GLAPIENTRY* fGetFBConfigAttrib)(Display*, GLXFBConfig, int, int*);
+    void(GLAPIENTRY* fSwapBuffers)(Display*, GLXDrawable);
+    const char*(GLAPIENTRY* fQueryExtensionsString)(Display*, int);
+    const char*(GLAPIENTRY* fGetClientString)(Display*, int);
+    const char*(GLAPIENTRY* fQueryServerString)(Display*, int, int);
+    GLXPixmap(GLAPIENTRY* fCreatePixmap)(Display*, GLXFBConfig, Pixmap,
+                                         const int*);
+    GLXPixmap(GLAPIENTRY* fCreateGLXPixmapWithConfig)(Display*, GLXFBConfig,
+                                                      Pixmap);
+    void(GLAPIENTRY* fDestroyPixmap)(Display*, GLXPixmap);
+    Bool(GLAPIENTRY* fQueryVersion)(Display*, int*, int*);
+    void(GLAPIENTRY* fWaitGL)();
+    void(GLAPIENTRY* fWaitX)();
+    void(GLAPIENTRY* fBindTexImageEXT)(Display*, GLXDrawable, int, const int*);
+    void(GLAPIENTRY* fReleaseTexImageEXT)(Display*, GLXDrawable, int);
+    GLXContext(GLAPIENTRY* fCreateContextAttribsARB)(Display*, GLXFBConfig,
+                                                     GLXContext, Bool,
+                                                     const int*);
+    int(GLAPIENTRY* fGetVideoSyncSGI)(unsigned int*);
+    int(GLAPIENTRY* fWaitVideoSyncSGI)(int, int, unsigned int*);
+    void(GLAPIENTRY* fSwapIntervalEXT)(Display*, GLXDrawable, int);
+    int(GLAPIENTRY* fQueryDrawable)(Display*, GLXDrawable, int, unsigned int*);
+  } mSymbols = {};
+
+  bool mInitialized = false;
+  bool mTriedInitializing = false;
+  bool mDebug = false;
+  bool mHasRobustness = false;
+  bool mHasVideoMemoryPurge = false;
+  bool mHasCreateContextAttribs = false;
+  bool mHasVideoSync = false;
+  bool mHasBufferAge = false;
+  bool mIsATI = false;
+  bool mIsNVIDIA = false;
+  bool mClientIsMesa = false;
+  PRLibrary* mOGLLibrary = nullptr;
+  StaticDataMutex<std::weak_ptr<gfx::XlibDisplay>> mOwnDisplay{
+      "GLXLibrary::mOwnDisplay"};
+};
+
+// a global GLXLibrary instance
+extern GLXLibrary sGLXLibrary;
+
+} /* namespace gl */
+} /* namespace mozilla */
+#endif /* GFX_GLXLIBRARY_H */
diff --git a/gfx/gl/GfxTexturesReporter.cpp b/gfx/gl/GfxTexturesReporter.cpp
new file mode 100644
index 0000000000..bd169e0013
--- /dev/null
+++ b/gfx/gl/GfxTexturesReporter.cpp
@@ -0,0 +1,77 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <string>
+#include <sstream>
+#include "nsExceptionHandler.h"
+#include "GfxTexturesReporter.h"
+#include "mozilla/StaticPrefs_gfx.h"
+
+using namespace mozilla::gl;
+
+NS_IMPL_ISUPPORTS(GfxTexturesReporter, nsIMemoryReporter)
+
+mozilla::Atomic<size_t> GfxTexturesReporter::sAmount(0);
+mozilla::Atomic<size_t> GfxTexturesReporter::sPeakAmount(0);
+mozilla::Atomic<size_t> GfxTexturesReporter::sTileWasteAmount(0);
+
+static std::string FormatBytes(size_t amount) {
+  std::stringstream stream;
+  int depth = 0;
+  double val = amount;
+  while (val > 1024) {
+    val /= 1024;
+    depth++;
+  }
+
+  const char* unit;
+  switch (depth) {
+    case 0:
+      unit = "bytes";
+      break;
+    case 1:
+      unit = "KB";
+      break;
+    case 2:
+      unit = "MB";
+      break;
+    case 3:
+      unit = "GB";
+      break;
+    default:
+      unit = "";
+      break;
+  }
+
+  stream << val << " " << unit;
+  return stream.str();
+}
+
+/* static */
+void GfxTexturesReporter::UpdateAmount(MemoryUse action, size_t amount) {
+  if (action == MemoryFreed) {
+    MOZ_RELEASE_ASSERT(
+        amount <= sAmount,
+        "GFX: Current texture usage greater than update amount.");
+    sAmount -= amount;
+
+    if (StaticPrefs::gfx_logging_texture_usage_enabled_AtStartup()) {
+      printf_stderr("Current texture usage: %s\n",
+                    FormatBytes(sAmount).c_str());
+    }
+  } else {
+    sAmount += amount;
+    if (sAmount > sPeakAmount) {
+      sPeakAmount.exchange(sAmount);
+      if (StaticPrefs::gfx_logging_peak_texture_usage_enabled_AtStartup()) {
+        printf_stderr("Peak texture usage: %s\n",
+                      FormatBytes(sPeakAmount).c_str());
+      }
+    }
+  }
+
+  CrashReporter::AnnotateTexturesSize(sAmount);
+}
diff --git a/gfx/gl/GfxTexturesReporter.h b/gfx/gl/GfxTexturesReporter.h
new file mode 100644
index 0000000000..077fc0e879
--- /dev/null
+++ b/gfx/gl/GfxTexturesReporter.h
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GFXTEXTURESREPORTER_H_
+#define GFXTEXTURESREPORTER_H_
+
+#include "mozilla/Atomics.h"
+#include "nsIMemoryReporter.h"
+#include "GLTypes.h"
+
+namespace mozilla {
+namespace gl {
+
+class GfxTexturesReporter final : public nsIMemoryReporter {
+  ~GfxTexturesReporter() = default;
+
+ public:
+  NS_DECL_ISUPPORTS
+
+  GfxTexturesReporter() {
+#ifdef DEBUG
+    // There must be only one instance of this class, due to |sAmount|
+    // being static.  Assert this.
+    static bool hasRun = false;
+    MOZ_ASSERT(!hasRun);
+    hasRun = true;
+#endif
+  }
+
+  enum MemoryUse {
+    // when memory being allocated is reported to a memory reporter
+    MemoryAllocated,
+    // when memory being freed is reported to a memory reporter
+    MemoryFreed
+  };
+
+  // When memory is used/freed for tile textures, call this method to update
+  // the value reported by this memory reporter.
+  static void UpdateAmount(MemoryUse action, size_t amount);
+
+  static void UpdateWasteAmount(size_t delta) { sTileWasteAmount += delta; }
+
+  NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
+                            nsISupports* aData, bool aAnonymize) override {
+    MOZ_COLLECT_REPORT(
+        "gfx-tiles-waste", KIND_OTHER, UNITS_BYTES, int64_t(sTileWasteAmount),
+        "Memory lost due to tiles extending past content boundaries");
+
+    MOZ_COLLECT_REPORT("gfx-textures", KIND_OTHER, UNITS_BYTES,
+                       int64_t(sAmount),
+                       "Memory used for storing GL textures.");
+
+    MOZ_COLLECT_REPORT("gfx-textures-peak", KIND_OTHER, UNITS_BYTES,
+                       int64_t(sPeakAmount),
+                       "Peak memory used for storing GL textures.");
+
+    return NS_OK;
+  }
+
+ private:
+  static Atomic<size_t> sAmount;
+  static Atomic<size_t> sPeakAmount;
+  // Count the amount of memory lost to tile waste
+  static Atomic<size_t> sTileWasteAmount;
+};
+
+class GfxTextureWasteTracker {
+ public:
+  GfxTextureWasteTracker() : mBytes(0) {
+    MOZ_COUNT_CTOR(GfxTextureWasteTracker);
+  }
+
+  void Update(int32_t aPixelArea, int32_t aBytesPerPixel) {
+    GfxTexturesReporter::UpdateWasteAmount(-mBytes);
+    mBytes = aPixelArea * aBytesPerPixel;
+    GfxTexturesReporter::UpdateWasteAmount(mBytes);
+  }
+
+  ~GfxTextureWasteTracker() {
+    GfxTexturesReporter::UpdateWasteAmount(-mBytes);
+    MOZ_COUNT_DTOR(GfxTextureWasteTracker);
+  }
+
+ private:
+  GfxTextureWasteTracker(const GfxTextureWasteTracker& aRef);
+
+  int32_t mBytes;
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GFXTEXTURESREPORTER_H_
diff --git a/gfx/gl/HeapCopyOfStackArray.h b/gfx/gl/HeapCopyOfStackArray.h
new file mode 100644
index 0000000000..ffcadde461
--- /dev/null
+++ b/gfx/gl/HeapCopyOfStackArray.h
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef HEAPCOPYOFSTACKARRAY_H_
+#define HEAPCOPYOFSTACKARRAY_H_
+
+#include "mozilla/Attributes.h"
+#include "mozilla/UniquePtr.h"
+
+#include <string.h>
+
+namespace mozilla {
+
+// Takes a stack array and copies it into a heap buffer.
+// Useful to retain the convenience of declaring static arrays, while
+// avoiding passing stack pointers to the GL (see bug 1005658).
+
+template <typename ElemType>
+class HeapCopyOfStackArray {
+ public:
+  template <size_t N>
+  MOZ_IMPLICIT HeapCopyOfStackArray(const ElemType (&array)[N])
+      : mArrayLength(N), mArrayData(MakeUnique<ElemType[]>(N)) {
+    memcpy(mArrayData.get(), &array[0], N * sizeof(ElemType));
+  }
+
+  ElemType* Data() const { return mArrayData.get(); }
+  size_t ArrayLength() const { return mArrayLength; }
+  size_t ByteLength() const { return mArrayLength * sizeof(ElemType); }
+
+ private:
+  HeapCopyOfStackArray() = delete;
+  HeapCopyOfStackArray(const HeapCopyOfStackArray&) = delete;
+
+  const size_t mArrayLength;
+  UniquePtr<ElemType[]> const mArrayData;
+};
+
+}  // namespace mozilla
+
+#endif  // HEAPCOPYOFSTACKARRAY_H_
diff --git a/gfx/gl/MozFramebuffer.cpp b/gfx/gl/MozFramebuffer.cpp
new file mode 100644
index 0000000000..10995a7ee1
--- /dev/null
+++ b/gfx/gl/MozFramebuffer.cpp
@@ -0,0 +1,225 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "MozFramebuffer.h"
+
+#include "GLContext.h"
+#include "mozilla/gfx/Logging.h"
+#include "ScopedGLHelpers.h"
+
+namespace mozilla {
+namespace gl {
+
+static void DeleteByTarget(GLContext* const gl, const GLenum target,
+                           const GLuint name) {
+  if (target == LOCAL_GL_RENDERBUFFER) {
+    gl->DeleteRenderbuffer(name);
+  } else {
+    gl->DeleteTexture(name);
+  }
+}
+
+UniquePtr<MozFramebuffer> MozFramebuffer::Create(GLContext* const gl,
+                                                 const gfx::IntSize& size,
+                                                 const uint32_t samples,
+                                                 const bool depthStencil) {
+  if (samples && !gl->IsSupported(GLFeature::framebuffer_multisample))
+    return nullptr;
+
+  if (uint32_t(size.width) > gl->MaxTexOrRbSize() ||
+      uint32_t(size.height) > gl->MaxTexOrRbSize() ||
+      samples > gl->MaxSamples()) {
+    return nullptr;
+  }
+
+  gl->MakeCurrent();
+
+  GLContext::LocalErrorScope errorScope(*gl);
+
+  GLenum colorTarget;
+  GLuint colorName;
+  if (samples) {
+    colorTarget = LOCAL_GL_RENDERBUFFER;
+    colorName = gl->CreateRenderbuffer();
+    const ScopedBindRenderbuffer bindRB(gl, colorName);
+    gl->fRenderbufferStorageMultisample(colorTarget, samples, LOCAL_GL_RGBA8,
+                                        size.width, size.height);
+  } else {
+    colorTarget = LOCAL_GL_TEXTURE_2D;
+    colorName = gl->CreateTexture();
+    const ScopedBindTexture bindTex(gl, colorName);
+    gl->TexParams_SetClampNoMips();
+    gl->fTexImage2D(colorTarget, 0, LOCAL_GL_RGBA, size.width, size.height, 0,
+                    LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, nullptr);
+  }
+
+  const auto err = errorScope.GetError();
+  if (err) {
+    if (err != LOCAL_GL_OUT_OF_MEMORY) {
+      gfxCriticalNote << "Unexpected error: " << gfx::hexa(err) << ": "
+                      << GLContext::GLErrorToString(err);
+    }
+    DeleteByTarget(gl, colorTarget, colorName);
+    return nullptr;
+  }
+
+  return CreateImpl(
+      gl, size, samples,
+      depthStencil ? DepthAndStencilBuffer::Create(gl, size, samples) : nullptr,
+      colorTarget, colorName);
+}
+
+UniquePtr<MozFramebuffer> MozFramebuffer::CreateForBacking(
+    GLContext* const gl, const gfx::IntSize& size, const uint32_t samples,
+    bool depthStencil, const GLenum colorTarget, const GLuint colorName) {
+  return CreateImpl(
+      gl, size, samples,
+      depthStencil ? DepthAndStencilBuffer::Create(gl, size, samples) : nullptr,
+      colorTarget, colorName);
+}
+
+/* static */ UniquePtr<MozFramebuffer>
+MozFramebuffer::CreateForBackingWithSharedDepthAndStencil(
+    const gfx::IntSize& size, const uint32_t samples, GLenum colorTarget,
+    GLuint colorName,
+    const RefPtr<DepthAndStencilBuffer>& depthAndStencilBuffer) {
+  auto gl = depthAndStencilBuffer->gl();
+  if (!gl || !gl->MakeCurrent()) {
+    return nullptr;
+  }
+  return CreateImpl(gl, size, samples, depthAndStencilBuffer, colorTarget,
+                    colorName);
+}
+
+/* static */ UniquePtr<MozFramebuffer> MozFramebuffer::CreateImpl(
+    GLContext* const gl, const gfx::IntSize& size, const uint32_t samples,
+    const RefPtr<DepthAndStencilBuffer>& depthAndStencilBuffer,
+    const GLenum colorTarget, const GLuint colorName) {
+  GLuint fb = gl->CreateFramebuffer();
+  const ScopedBindFramebuffer bindFB(gl, fb);
+
+  if (colorTarget == LOCAL_GL_RENDERBUFFER) {
+    gl->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER,
+                                 LOCAL_GL_COLOR_ATTACHMENT0, colorTarget,
+                                 colorName);
+  } else {
+    gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
+                              colorTarget, colorName, 0);
+  }
+
+  if (depthAndStencilBuffer) {
+    gl->fFramebufferRenderbuffer(
+        LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT, LOCAL_GL_RENDERBUFFER,
+        depthAndStencilBuffer->mDepthRB);
+    gl->fFramebufferRenderbuffer(
+        LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
+        LOCAL_GL_RENDERBUFFER, depthAndStencilBuffer->mStencilRB);
+  }
+
+  const auto status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
+  if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
+    gfxCriticalNote << "MozFramebuffer::CreateImpl(size:" << size
+                    << ", samples:" << samples
+                    << ", depthAndStencil:" << bool(depthAndStencilBuffer)
+                    << ", colorTarget:" << gfx::hexa(colorTarget)
+                    << ", colorName:" << colorName << "): Incomplete: 0x"
+                    << gfx::hexa(status);
+    return nullptr;
+  }
+
+  return UniquePtr<MozFramebuffer>(new MozFramebuffer(
+      gl, size, fb, samples, depthAndStencilBuffer, colorTarget, colorName));
+}
+
+/* static */ RefPtr<DepthAndStencilBuffer> DepthAndStencilBuffer::Create(
+    GLContext* const gl, const gfx::IntSize& size, const uint32_t samples) {
+  const auto fnAllocRB = [&](GLenum format) {
+    GLuint rb = gl->CreateRenderbuffer();
+    const ScopedBindRenderbuffer bindRB(gl, rb);
+    if (samples) {
+      gl->fRenderbufferStorageMultisample(LOCAL_GL_RENDERBUFFER, samples,
+                                          format, size.width, size.height);
+    } else {
+      gl->fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, format, size.width,
+                               size.height);
+    }
+    return rb;
+  };
+
+  GLuint depthRB, stencilRB;
+  {
+    GLContext::LocalErrorScope errorScope(*gl);
+
+    if (gl->IsSupported(GLFeature::packed_depth_stencil)) {
+      depthRB = fnAllocRB(LOCAL_GL_DEPTH24_STENCIL8);
+      stencilRB = depthRB;  // Ignore unused mStencilRB.
+    } else {
+      depthRB = fnAllocRB(LOCAL_GL_DEPTH_COMPONENT24);
+      stencilRB = fnAllocRB(LOCAL_GL_STENCIL_INDEX8);
+    }
+
+    const auto err = errorScope.GetError();
+    if (err) {
+      MOZ_ASSERT(err == LOCAL_GL_OUT_OF_MEMORY);
+      return nullptr;
+    }
+  }
+
+  return new DepthAndStencilBuffer(gl, size, depthRB, stencilRB);
+}
+
+////////////////////
+
+MozFramebuffer::MozFramebuffer(
+    GLContext* const gl, const gfx::IntSize& size, GLuint fb,
+    const uint32_t samples, RefPtr<DepthAndStencilBuffer> depthAndStencilBuffer,
+    const GLenum colorTarget, const GLuint colorName)
+    : mWeakGL(gl),
+      mSize(size),
+      mSamples(samples),
+      mFB(fb),
+      mColorTarget(colorTarget),
+      mDepthAndStencilBuffer(std::move(depthAndStencilBuffer)),
+      mColorName(colorName) {
+  MOZ_ASSERT(mColorTarget);
+  MOZ_ASSERT(mColorName);
+}
+
+MozFramebuffer::~MozFramebuffer() {
+  GLContext* const gl = mWeakGL;
+  if (!gl || !gl->MakeCurrent()) {
+    return;
+  }
+
+  gl->DeleteFramebuffer(mFB);
+
+  DeleteByTarget(gl, mColorTarget, mColorName);
+}
+
+bool MozFramebuffer::HasDepth() const {
+  return mDepthAndStencilBuffer && mDepthAndStencilBuffer->mDepthRB;
+}
+
+bool MozFramebuffer::HasStencil() const {
+  return mDepthAndStencilBuffer && mDepthAndStencilBuffer->mStencilRB;
+}
+
+DepthAndStencilBuffer::DepthAndStencilBuffer(GLContext* gl,
+                                             const gfx::IntSize& size,
+                                             GLuint depthRB, GLuint stencilRB)
+    : mWeakGL(gl), mSize(size), mDepthRB(depthRB), mStencilRB(stencilRB) {}
+
+DepthAndStencilBuffer::~DepthAndStencilBuffer() {
+  GLContext* const gl = mWeakGL;
+  if (!gl || !gl->MakeCurrent()) {
+    return;
+  }
+
+  gl->DeleteRenderbuffer(mDepthRB);
+  gl->DeleteRenderbuffer(mStencilRB);
+}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/MozFramebuffer.h b/gfx/gl/MozFramebuffer.h
new file mode 100644
index 0000000000..dd51ef6154
--- /dev/null
+++ b/gfx/gl/MozFramebuffer.h
@@ -0,0 +1,109 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZ_FRAMEBUFFER_H_
+#define MOZ_FRAMEBUFFER_H_
+
+#include "gfx2DGlue.h"
+#include "GLConsts.h"
+#include "GLContextTypes.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/WeakPtr.h"
+
+namespace mozilla {
+namespace gl {
+
+class DepthAndStencilBuffer final : public SupportsWeakPtr {
+  const WeakPtr<GLContext> mWeakGL;
+  const gfx::IntSize mSize;
+
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DepthAndStencilBuffer)
+
+  const GLuint mDepthRB;
+  const GLuint mStencilRB;
+
+  static RefPtr<DepthAndStencilBuffer> Create(GLContext* const gl,
+                                              const gfx::IntSize& size,
+                                              const uint32_t samples);
+
+  RefPtr<GLContext> gl() const { return mWeakGL.get(); }
+
+  // 4 bytes per pixel (24-bit depth + 8-bit stencil).
+  uint64_t EstimateMemory() const {
+    return static_cast<uint64_t>(mSize.width) * 4 * mSize.height;
+  }
+
+ protected:
+  DepthAndStencilBuffer(GLContext* gl, const gfx::IntSize& size, GLuint depthRB,
+                        GLuint stencilRB);
+  ~DepthAndStencilBuffer();
+};
+
+class MozFramebuffer final {
+  const WeakPtr<GLContext> mWeakGL;
+
+ public:
+  const gfx::IntSize mSize;
+  const uint32_t mSamples;
+  const GLuint mFB;
+  const GLenum mColorTarget;
+
+ private:
+  const RefPtr<DepthAndStencilBuffer> mDepthAndStencilBuffer;
+  const GLuint mColorName;
+
+ public:
+  // Create a new framebuffer with the specified properties.
+  static UniquePtr<MozFramebuffer> Create(GLContext* gl,
+                                          const gfx::IntSize& size,
+                                          uint32_t samples, bool depthStencil);
+
+  // Create a new framebuffer backed by an existing texture or buffer.
+  // Assumes that gl is the current context.
+  static UniquePtr<MozFramebuffer> CreateForBacking(
+      GLContext* gl, const gfx::IntSize& size, uint32_t samples,
+      bool depthStencil, GLenum colorTarget, GLuint colorName);
+
+  // Create a new framebuffer backed by an existing texture or buffer.
+  // Use the same GLContext, size, and samples as framebufferToShareWith.
+  // The new framebuffer will share its depth and stencil buffer with
+  // framebufferToShareWith. The depth and stencil buffers will be destroyed
+  // once the last MozFramebuffer using them is destroyed.
+  static UniquePtr<MozFramebuffer> CreateForBackingWithSharedDepthAndStencil(
+      const gfx::IntSize& size, const uint32_t samples, GLenum colorTarget,
+      GLuint colorName,
+      const RefPtr<DepthAndStencilBuffer>& depthAndStencilBuffer);
+
+ private:
+  MozFramebuffer(GLContext* gl, const gfx::IntSize& size, GLuint fb,
+                 uint32_t samples,
+                 RefPtr<DepthAndStencilBuffer> depthAndStencilBuffer,
+                 GLenum colorTarget, GLuint colorName);
+
+  // gl must be the current context when this is called.
+  static UniquePtr<MozFramebuffer> CreateImpl(
+      GLContext* const gl, const gfx::IntSize& size, const uint32_t samples,
+      const RefPtr<DepthAndStencilBuffer>& depthAndStencilBuffer,
+      const GLenum colorTarget, const GLuint colorName);
+
+ public:
+  ~MozFramebuffer();
+
+  GLuint ColorTex() const {
+    if (mColorTarget == LOCAL_GL_RENDERBUFFER) return 0;
+    return mColorName;
+  }
+  const auto& GetDepthAndStencilBuffer() const {
+    return mDepthAndStencilBuffer;
+  }
+  bool HasDepth() const;
+  bool HasStencil() const;
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // MOZ_FRAMEBUFFER_H_
diff --git a/gfx/gl/ScopedGLHelpers.cpp b/gfx/gl/ScopedGLHelpers.cpp
new file mode 100644
index 0000000000..d654cae163
--- /dev/null
+++ b/gfx/gl/ScopedGLHelpers.cpp
@@ -0,0 +1,490 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/UniquePtr.h"
+
+#include "GLContext.h"
+#include "ScopedGLHelpers.h"
+
+namespace mozilla {
+namespace gl {
+
+/* ScopedGLState - Wraps glEnable/glDisable. **********************************/
+
+// Use |newState = true| to enable, |false| to disable.
+ScopedGLState::ScopedGLState(GLContext* aGL, GLenum aCapability, bool aNewState)
+    : mGL(aGL), mCapability(aCapability) {
+  mOldState = mGL->fIsEnabled(mCapability);
+
+  // Early out if we're already in the right state.
+  if (aNewState == mOldState) return;
+
+  if (aNewState) {
+    mGL->fEnable(mCapability);
+  } else {
+    mGL->fDisable(mCapability);
+  }
+}
+
+ScopedGLState::ScopedGLState(GLContext* aGL, GLenum aCapability)
+    : mGL(aGL), mCapability(aCapability) {
+  mOldState = mGL->fIsEnabled(mCapability);
+}
+
+ScopedGLState::~ScopedGLState() {
+  if (mOldState) {
+    mGL->fEnable(mCapability);
+  } else {
+    mGL->fDisable(mCapability);
+  }
+}
+
+/* ScopedBindFramebuffer - Saves and restores with GetUserBoundFB and
+ * BindUserFB. */
+
+void ScopedBindFramebuffer::Init() {
+  if (mGL->IsSupported(GLFeature::split_framebuffer)) {
+    mOldReadFB = mGL->GetReadFB();
+    mOldDrawFB = mGL->GetDrawFB();
+  } else {
+    mOldReadFB = mOldDrawFB = mGL->GetFB();
+  }
+}
+
+ScopedBindFramebuffer::ScopedBindFramebuffer(GLContext* aGL) : mGL(aGL) {
+  Init();
+}
+
+ScopedBindFramebuffer::ScopedBindFramebuffer(GLContext* aGL, GLuint aNewFB)
+    : mGL(aGL) {
+  Init();
+  mGL->BindFB(aNewFB);
+}
+
+ScopedBindFramebuffer::~ScopedBindFramebuffer() {
+  if (mOldReadFB == mOldDrawFB) {
+    mGL->BindFB(mOldDrawFB);
+  } else {
+    mGL->BindDrawFB(mOldDrawFB);
+    mGL->BindReadFB(mOldReadFB);
+  }
+}
+
+/* ScopedBindTextureUnit ******************************************************/
+
+ScopedBindTextureUnit::ScopedBindTextureUnit(GLContext* aGL, GLenum aTexUnit)
+    : mGL(aGL), mOldTexUnit(0) {
+  MOZ_ASSERT(aTexUnit >= LOCAL_GL_TEXTURE0);
+  mGL->GetUIntegerv(LOCAL_GL_ACTIVE_TEXTURE, &mOldTexUnit);
+  mGL->fActiveTexture(aTexUnit);
+}
+
+ScopedBindTextureUnit::~ScopedBindTextureUnit() {
+  mGL->fActiveTexture(mOldTexUnit);
+}
+
+/* ScopedTexture **************************************************************/
+
+ScopedTexture::ScopedTexture(GLContext* aGL) : mGL(aGL), mTexture(0) {
+  mGL->fGenTextures(1, &mTexture);
+}
+
+ScopedTexture::~ScopedTexture() { mGL->fDeleteTextures(1, &mTexture); }
+
+/* ScopedFramebuffer
+ * **************************************************************/
+
+ScopedFramebuffer::ScopedFramebuffer(GLContext* aGL) : mGL(aGL), mFB(0) {
+  mGL->fGenFramebuffers(1, &mFB);
+}
+
+ScopedFramebuffer::~ScopedFramebuffer() { mGL->fDeleteFramebuffers(1, &mFB); }
+
+/* ScopedRenderbuffer
+ * **************************************************************/
+
+ScopedRenderbuffer::ScopedRenderbuffer(GLContext* aGL) : mGL(aGL), mRB(0) {
+  mGL->fGenRenderbuffers(1, &mRB);
+}
+
+ScopedRenderbuffer::~ScopedRenderbuffer() {
+  mGL->fDeleteRenderbuffers(1, &mRB);
+}
+
+/* ScopedBindTexture **********************************************************/
+
+static GLuint GetBoundTexture(GLContext* gl, GLenum texTarget) {
+  GLenum bindingTarget;
+  switch (texTarget) {
+    case LOCAL_GL_TEXTURE_2D:
+      bindingTarget = LOCAL_GL_TEXTURE_BINDING_2D;
+      break;
+
+    case LOCAL_GL_TEXTURE_CUBE_MAP:
+      bindingTarget = LOCAL_GL_TEXTURE_BINDING_CUBE_MAP;
+      break;
+
+    case LOCAL_GL_TEXTURE_3D:
+      bindingTarget = LOCAL_GL_TEXTURE_BINDING_3D;
+      break;
+
+    case LOCAL_GL_TEXTURE_2D_ARRAY:
+      bindingTarget = LOCAL_GL_TEXTURE_BINDING_2D_ARRAY;
+      break;
+
+    case LOCAL_GL_TEXTURE_RECTANGLE_ARB:
+      bindingTarget = LOCAL_GL_TEXTURE_BINDING_RECTANGLE_ARB;
+      break;
+
+    case LOCAL_GL_TEXTURE_EXTERNAL:
+      bindingTarget = LOCAL_GL_TEXTURE_BINDING_EXTERNAL;
+      break;
+
+    default:
+      MOZ_CRASH("bad texTarget");
+  }
+
+  GLuint ret = 0;
+  gl->GetUIntegerv(bindingTarget, &ret);
+  return ret;
+}
+
+ScopedBindTexture::ScopedBindTexture(GLContext* aGL, GLuint aNewTex,
+                                     GLenum aTarget)
+    : mGL(aGL), mTarget(aTarget), mOldTex(GetBoundTexture(aGL, aTarget)) {
+  mGL->fBindTexture(mTarget, aNewTex);
+}
+
+ScopedBindTexture::~ScopedBindTexture() { mGL->fBindTexture(mTarget, mOldTex); }
+
+/* ScopedBindRenderbuffer *****************************************************/
+
+void ScopedBindRenderbuffer::Init() {
+  mOldRB = 0;
+  mGL->GetUIntegerv(LOCAL_GL_RENDERBUFFER_BINDING, &mOldRB);
+}
+
+ScopedBindRenderbuffer::ScopedBindRenderbuffer(GLContext* aGL) : mGL(aGL) {
+  Init();
+}
+
+ScopedBindRenderbuffer::ScopedBindRenderbuffer(GLContext* aGL, GLuint aNewRB)
+    : mGL(aGL) {
+  Init();
+  mGL->fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, aNewRB);
+}
+
+ScopedBindRenderbuffer::~ScopedBindRenderbuffer() {
+  mGL->fBindRenderbuffer(LOCAL_GL_RENDERBUFFER, mOldRB);
+}
+
+/* ScopedFramebufferForTexture ************************************************/
+ScopedFramebufferForTexture::ScopedFramebufferForTexture(GLContext* aGL,
+                                                         GLuint aTexture,
+                                                         GLenum aTarget)
+    : mGL(aGL), mComplete(false), mFB(0) {
+  mGL->fGenFramebuffers(1, &mFB);
+  ScopedBindFramebuffer autoFB(aGL, mFB);
+  mGL->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
+                             aTarget, aTexture, 0);
+
+  GLenum status = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
+  if (status == LOCAL_GL_FRAMEBUFFER_COMPLETE) {
+    mComplete = true;
+  } else {
+    mGL->fDeleteFramebuffers(1, &mFB);
+    mFB = 0;
+  }
+}
+
+ScopedFramebufferForTexture::~ScopedFramebufferForTexture() {
+  if (!mFB) return;
+
+  mGL->fDeleteFramebuffers(1, &mFB);
+  mFB = 0;
+}
+
+/* ScopedFramebufferForRenderbuffer *******************************************/
+
+ScopedFramebufferForRenderbuffer::ScopedFramebufferForRenderbuffer(
+    GLContext* aGL, GLuint aRB)
+    : mGL(aGL), mComplete(false), mFB(0) {
+  mGL->fGenFramebuffers(1, &mFB);
+  ScopedBindFramebuffer autoFB(aGL, mFB);
+  mGL->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER,
+                                LOCAL_GL_COLOR_ATTACHMENT0,
+                                LOCAL_GL_RENDERBUFFER, aRB);
+
+  GLenum status = mGL->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
+  if (status == LOCAL_GL_FRAMEBUFFER_COMPLETE) {
+    mComplete = true;
+  } else {
+    mGL->fDeleteFramebuffers(1, &mFB);
+    mFB = 0;
+  }
+}
+
+ScopedFramebufferForRenderbuffer::~ScopedFramebufferForRenderbuffer() {
+  if (!mFB) return;
+
+  mGL->fDeleteFramebuffers(1, &mFB);
+  mFB = 0;
+}
+
+/* ScopedViewportRect *********************************************************/
+
+ScopedViewportRect::ScopedViewportRect(GLContext* aGL, GLint x, GLint y,
+                                       GLsizei width, GLsizei height)
+    : mGL(aGL) {
+  mGL->fGetIntegerv(LOCAL_GL_VIEWPORT, mSavedViewportRect);
+  mGL->fViewport(x, y, width, height);
+}
+
+ScopedViewportRect::~ScopedViewportRect() {
+  mGL->fViewport(mSavedViewportRect[0], mSavedViewportRect[1],
+                 mSavedViewportRect[2], mSavedViewportRect[3]);
+}
+
+/* ScopedScissorRect **********************************************************/
+
+ScopedScissorRect::ScopedScissorRect(GLContext* aGL, GLint x, GLint y,
+                                     GLsizei width, GLsizei height)
+    : mGL(aGL) {
+  mGL->fGetIntegerv(LOCAL_GL_SCISSOR_BOX, mSavedScissorRect);
+  mGL->fScissor(x, y, width, height);
+}
+
+ScopedScissorRect::ScopedScissorRect(GLContext* aGL) : mGL(aGL) {
+  mGL->fGetIntegerv(LOCAL_GL_SCISSOR_BOX, mSavedScissorRect);
+}
+
+ScopedScissorRect::~ScopedScissorRect() {
+  mGL->fScissor(mSavedScissorRect[0], mSavedScissorRect[1],
+                mSavedScissorRect[2], mSavedScissorRect[3]);
+}
+
+/* ScopedVertexAttribPointer **************************************************/
+
+ScopedVertexAttribPointer::ScopedVertexAttribPointer(
+    GLContext* aGL, GLuint index, GLint size, GLenum type,
+    realGLboolean normalized, GLsizei stride, GLuint buffer,
+    const GLvoid* pointer)
+    : mGL(aGL),
+      mAttribEnabled(0),
+      mAttribSize(0),
+      mAttribStride(0),
+      mAttribType(0),
+      mAttribNormalized(0),
+      mAttribBufferBinding(0),
+      mAttribPointer(nullptr),
+      mBoundBuffer(0) {
+  WrapImpl(index);
+  mGL->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, buffer);
+  mGL->fVertexAttribPointer(index, size, type, normalized, stride, pointer);
+  mGL->fEnableVertexAttribArray(index);
+}
+
+ScopedVertexAttribPointer::ScopedVertexAttribPointer(GLContext* aGL,
+                                                     GLuint index)
+    : mGL(aGL),
+      mAttribEnabled(0),
+      mAttribSize(0),
+      mAttribStride(0),
+      mAttribType(0),
+      mAttribNormalized(0),
+      mAttribBufferBinding(0),
+      mAttribPointer(nullptr),
+      mBoundBuffer(0) {
+  WrapImpl(index);
+}
+
+void ScopedVertexAttribPointer::WrapImpl(GLuint index) {
+  mAttribIndex = index;
+
+  /*
+   * mGL->fGetVertexAttribiv takes:
+   *  VERTEX_ATTRIB_ARRAY_ENABLED
+   *  VERTEX_ATTRIB_ARRAY_SIZE,
+   *  VERTEX_ATTRIB_ARRAY_STRIDE,
+   *  VERTEX_ATTRIB_ARRAY_TYPE,
+   *  VERTEX_ATTRIB_ARRAY_NORMALIZED,
+   *  VERTEX_ATTRIB_ARRAY_BUFFER_BINDING,
+   *  CURRENT_VERTEX_ATTRIB
+   *
+   * CURRENT_VERTEX_ATTRIB is vertex shader state. \o/
+   * Others appear to be vertex array state,
+   * or alternatively in the internal vertex array state
+   * for a buffer object.
+   */
+
+  mGL->fGetVertexAttribiv(mAttribIndex, LOCAL_GL_VERTEX_ATTRIB_ARRAY_ENABLED,
+                          &mAttribEnabled);
+  mGL->fGetVertexAttribiv(mAttribIndex, LOCAL_GL_VERTEX_ATTRIB_ARRAY_SIZE,
+                          &mAttribSize);
+  mGL->fGetVertexAttribiv(mAttribIndex, LOCAL_GL_VERTEX_ATTRIB_ARRAY_STRIDE,
+                          &mAttribStride);
+  mGL->fGetVertexAttribiv(mAttribIndex, LOCAL_GL_VERTEX_ATTRIB_ARRAY_TYPE,
+                          &mAttribType);
+  mGL->fGetVertexAttribiv(mAttribIndex, LOCAL_GL_VERTEX_ATTRIB_ARRAY_NORMALIZED,
+                          &mAttribNormalized);
+  mGL->fGetVertexAttribiv(mAttribIndex,
+                          LOCAL_GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING,
+                          &mAttribBufferBinding);
+  mGL->fGetVertexAttribPointerv(
+      mAttribIndex, LOCAL_GL_VERTEX_ATTRIB_ARRAY_POINTER, &mAttribPointer);
+
+  // Note that uniform values are program state, so we don't need to rebind
+  // those.
+
+  mGL->GetUIntegerv(LOCAL_GL_ARRAY_BUFFER_BINDING, &mBoundBuffer);
+}
+
+ScopedVertexAttribPointer::~ScopedVertexAttribPointer() {
+  mGL->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, mAttribBufferBinding);
+  mGL->fVertexAttribPointer(mAttribIndex, mAttribSize, mAttribType,
+                            mAttribNormalized, mAttribStride, mAttribPointer);
+  if (mAttribEnabled)
+    mGL->fEnableVertexAttribArray(mAttribIndex);
+  else
+    mGL->fDisableVertexAttribArray(mAttribIndex);
+  mGL->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, mBoundBuffer);
+}
+
+////////////////////////////////////////////////////////////////////////
+// ScopedPackState
+
+ScopedPackState::ScopedPackState(GLContext* gl)
+    : mGL(gl),
+      mAlignment(0),
+      mPixelBuffer(0),
+      mRowLength(0),
+      mSkipPixels(0),
+      mSkipRows(0) {
+  mGL->fGetIntegerv(LOCAL_GL_PACK_ALIGNMENT, &mAlignment);
+
+  if (mAlignment != 4) mGL->fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, 4);
+
+  if (!mGL->HasPBOState()) return;
+
+  mGL->fGetIntegerv(LOCAL_GL_PIXEL_PACK_BUFFER_BINDING, (GLint*)&mPixelBuffer);
+  mGL->fGetIntegerv(LOCAL_GL_PACK_ROW_LENGTH, &mRowLength);
+  mGL->fGetIntegerv(LOCAL_GL_PACK_SKIP_PIXELS, &mSkipPixels);
+  mGL->fGetIntegerv(LOCAL_GL_PACK_SKIP_ROWS, &mSkipRows);
+
+  if (mPixelBuffer != 0) mGL->fBindBuffer(LOCAL_GL_PIXEL_PACK_BUFFER, 0);
+  if (mRowLength != 0) mGL->fPixelStorei(LOCAL_GL_PACK_ROW_LENGTH, 0);
+  if (mSkipPixels != 0) mGL->fPixelStorei(LOCAL_GL_PACK_SKIP_PIXELS, 0);
+  if (mSkipRows != 0) mGL->fPixelStorei(LOCAL_GL_PACK_SKIP_ROWS, 0);
+}
+
+bool ScopedPackState::SetForWidthAndStrideRGBA(GLsizei aWidth,
+                                               GLsizei aStride) {
+  MOZ_ASSERT(aStride % 4 == 0, "RGBA data should always be 4-byte aligned");
+  MOZ_ASSERT(aStride / 4 >= aWidth, "Stride too small");
+  if (aStride / 4 == aWidth) {
+    // No special handling needed.
+    return true;
+  }
+  if (mGL->HasPBOState()) {
+    // HasPBOState implies support for GL_PACK_ROW_LENGTH.
+    mGL->fPixelStorei(LOCAL_GL_PACK_ROW_LENGTH, aStride / 4);
+    return true;
+  }
+  return false;
+}
+
+ScopedPackState::~ScopedPackState() {
+  mGL->fPixelStorei(LOCAL_GL_PACK_ALIGNMENT, mAlignment);
+
+  if (!mGL->HasPBOState()) return;
+
+  mGL->fBindBuffer(LOCAL_GL_PIXEL_PACK_BUFFER, mPixelBuffer);
+  mGL->fPixelStorei(LOCAL_GL_PACK_ROW_LENGTH, mRowLength);
+  mGL->fPixelStorei(LOCAL_GL_PACK_SKIP_PIXELS, mSkipPixels);
+  mGL->fPixelStorei(LOCAL_GL_PACK_SKIP_ROWS, mSkipRows);
+}
+
+////////////////////////////////////////////////////////////////////////
+// ResetUnpackState
+
+ResetUnpackState::ResetUnpackState(GLContext* gl)
+    : mGL(gl),
+      mAlignment(0),
+      mPBO(0),
+      mRowLength(0),
+      mImageHeight(0),
+      mSkipPixels(0),
+      mSkipRows(0),
+      mSkipImages(0) {
+  const auto fnReset = [&](GLenum pname, GLuint val, GLuint* const out_old) {
+    mGL->GetUIntegerv(pname, out_old);
+    if (*out_old != val) {
+      mGL->fPixelStorei(pname, val);
+    }
+  };
+
+  // Default is 4, but 1 is more useful.
+  fnReset(LOCAL_GL_UNPACK_ALIGNMENT, 1, &mAlignment);
+
+  if (!mGL->HasPBOState()) return;
+
+  mGL->GetUIntegerv(LOCAL_GL_PIXEL_UNPACK_BUFFER_BINDING, &mPBO);
+  if (mPBO != 0) mGL->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, 0);
+
+  fnReset(LOCAL_GL_UNPACK_ROW_LENGTH, 0, &mRowLength);
+  fnReset(LOCAL_GL_UNPACK_IMAGE_HEIGHT, 0, &mImageHeight);
+  fnReset(LOCAL_GL_UNPACK_SKIP_PIXELS, 0, &mSkipPixels);
+  fnReset(LOCAL_GL_UNPACK_SKIP_ROWS, 0, &mSkipRows);
+  fnReset(LOCAL_GL_UNPACK_SKIP_IMAGES, 0, &mSkipImages);
+}
+
+ResetUnpackState::~ResetUnpackState() {
+  mGL->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, mAlignment);
+
+  if (!mGL->HasPBOState()) return;
+
+  mGL->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, mPBO);
+
+  mGL->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, mRowLength);
+  mGL->fPixelStorei(LOCAL_GL_UNPACK_IMAGE_HEIGHT, mImageHeight);
+  mGL->fPixelStorei(LOCAL_GL_UNPACK_SKIP_PIXELS, mSkipPixels);
+  mGL->fPixelStorei(LOCAL_GL_UNPACK_SKIP_ROWS, mSkipRows);
+  mGL->fPixelStorei(LOCAL_GL_UNPACK_SKIP_IMAGES, mSkipImages);
+}
+
+////////////////////////////////////////////////////////////////////////
+// ScopedBindPBO
+
+static GLuint GetPBOBinding(GLContext* gl, GLenum target) {
+  if (!gl->HasPBOState()) return 0;
+
+  GLenum targetBinding;
+  switch (target) {
+    case LOCAL_GL_PIXEL_PACK_BUFFER:
+      targetBinding = LOCAL_GL_PIXEL_PACK_BUFFER_BINDING;
+      break;
+
+    case LOCAL_GL_PIXEL_UNPACK_BUFFER:
+      targetBinding = LOCAL_GL_PIXEL_UNPACK_BUFFER_BINDING;
+      break;
+
+    default:
+      MOZ_CRASH();
+  }
+
+  return gl->GetIntAs<GLuint>(targetBinding);
+}
+
+ScopedBindPBO::ScopedBindPBO(GLContext* gl, GLenum target)
+    : mGL(gl), mTarget(target), mPBO(GetPBOBinding(mGL, mTarget)) {}
+
+ScopedBindPBO::~ScopedBindPBO() {
+  if (!mGL->HasPBOState()) return;
+
+  mGL->fBindBuffer(mTarget, mPBO);
+}
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/ScopedGLHelpers.h b/gfx/gl/ScopedGLHelpers.h
new file mode 100644
index 0000000000..6e3b9867bc
--- /dev/null
+++ b/gfx/gl/ScopedGLHelpers.h
@@ -0,0 +1,260 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SCOPEDGLHELPERS_H_
+#define SCOPEDGLHELPERS_H_
+
+#include "GLDefs.h"
+#include "mozilla/UniquePtr.h"
+
+namespace mozilla {
+namespace gl {
+
+class GLContext;
+
+#ifdef DEBUG
+bool IsContextCurrent(GLContext* gl);
+#endif
+
+// Wraps glEnable/Disable.
+struct ScopedGLState final {
+ private:
+  GLContext* const mGL;
+  const GLenum mCapability;
+  bool mOldState;
+
+ public:
+  // Use |newState = true| to enable, |false| to disable.
+  ScopedGLState(GLContext* aGL, GLenum aCapability, bool aNewState);
+  // variant that doesn't change state; simply records existing state to be
+  // restored by the destructor
+  ScopedGLState(GLContext* aGL, GLenum aCapability);
+  ~ScopedGLState();
+};
+
+// Saves and restores with GetUserBoundFB and BindUserFB.
+struct ScopedBindFramebuffer final {
+ private:
+  GLContext* const mGL;
+  GLuint mOldReadFB;
+  GLuint mOldDrawFB;
+
+  void Init();
+
+ public:
+  explicit ScopedBindFramebuffer(GLContext* aGL);
+  ScopedBindFramebuffer(GLContext* aGL, GLuint aNewFB);
+  ~ScopedBindFramebuffer();
+};
+
+struct ScopedBindTextureUnit final {
+ private:
+  GLContext* const mGL;
+  GLenum mOldTexUnit;
+
+ public:
+  ScopedBindTextureUnit(GLContext* aGL, GLenum aTexUnit);
+  ~ScopedBindTextureUnit();
+};
+
+struct ScopedTexture final {
+ private:
+  GLContext* const mGL;
+  GLuint mTexture;
+
+ public:
+  explicit ScopedTexture(GLContext* aGL);
+  ~ScopedTexture();
+
+  GLuint Texture() const { return mTexture; }
+  operator GLuint() const { return mTexture; }
+};
+
+struct ScopedFramebuffer final {
+ private:
+  GLContext* const mGL;
+  GLuint mFB;
+
+ public:
+  explicit ScopedFramebuffer(GLContext* aGL);
+  ~ScopedFramebuffer();
+
+  const auto& FB() const { return mFB; }
+  operator GLuint() const { return mFB; }
+};
+
+struct ScopedRenderbuffer final {
+ private:
+  GLContext* const mGL;
+  GLuint mRB;
+
+ public:
+  explicit ScopedRenderbuffer(GLContext* aGL);
+  ~ScopedRenderbuffer();
+
+  GLuint RB() { return mRB; }
+  operator GLuint() const { return mRB; }
+};
+
+struct ScopedBindTexture final {
+ private:
+  GLContext* const mGL;
+  const GLenum mTarget;
+  const GLuint mOldTex;
+
+ public:
+  ScopedBindTexture(GLContext* aGL, GLuint aNewTex,
+                    GLenum aTarget = LOCAL_GL_TEXTURE_2D);
+  ~ScopedBindTexture();
+};
+
+struct ScopedBindRenderbuffer final {
+ private:
+  GLContext* const mGL;
+  GLuint mOldRB;
+
+ private:
+  void Init();
+
+ public:
+  explicit ScopedBindRenderbuffer(GLContext* aGL);
+  ScopedBindRenderbuffer(GLContext* aGL, GLuint aNewRB);
+  ~ScopedBindRenderbuffer();
+};
+
+struct ScopedFramebufferForTexture final {
+ private:
+  GLContext* const mGL;
+  bool mComplete;  // True if the framebuffer we create is complete.
+  GLuint mFB;
+
+ public:
+  ScopedFramebufferForTexture(GLContext* aGL, GLuint aTexture,
+                              GLenum aTarget = LOCAL_GL_TEXTURE_2D);
+  ~ScopedFramebufferForTexture();
+
+  bool IsComplete() const { return mComplete; }
+
+  GLuint FB() const {
+    MOZ_GL_ASSERT(mGL, IsComplete());
+    return mFB;
+  }
+};
+
+struct ScopedFramebufferForRenderbuffer final {
+ private:
+  GLContext* const mGL;
+  bool mComplete;  // True if the framebuffer we create is complete.
+  GLuint mFB;
+
+ public:
+  ScopedFramebufferForRenderbuffer(GLContext* aGL, GLuint aRB);
+  ~ScopedFramebufferForRenderbuffer();
+
+  bool IsComplete() const { return mComplete; }
+  GLuint FB() const {
+    MOZ_GL_ASSERT(mGL, IsComplete());
+    return mFB;
+  }
+};
+
+struct ScopedViewportRect final {
+ private:
+  GLContext* const mGL;
+  GLint mSavedViewportRect[4];
+
+ public:
+  ScopedViewportRect(GLContext* aGL, GLint x, GLint y, GLsizei width,
+                     GLsizei height);
+  ~ScopedViewportRect();
+};
+
+struct ScopedScissorRect final {
+ private:
+  GLContext* const mGL;
+  GLint mSavedScissorRect[4];
+
+ public:
+  ScopedScissorRect(GLContext* aGL, GLint x, GLint y, GLsizei width,
+                    GLsizei height);
+  explicit ScopedScissorRect(GLContext* aGL);
+  ~ScopedScissorRect();
+};
+
+struct ScopedVertexAttribPointer final {
+ private:
+  GLContext* const mGL;
+  GLuint mAttribIndex;
+  GLint mAttribEnabled;
+  GLint mAttribSize;
+  GLint mAttribStride;
+  GLint mAttribType;
+  GLint mAttribNormalized;
+  GLint mAttribBufferBinding;
+  void* mAttribPointer;
+  GLuint mBoundBuffer;
+
+ public:
+  ScopedVertexAttribPointer(GLContext* aGL, GLuint index, GLint size,
+                            GLenum type, realGLboolean normalized,
+                            GLsizei stride, GLuint buffer,
+                            const GLvoid* pointer);
+  explicit ScopedVertexAttribPointer(GLContext* aGL, GLuint index);
+  ~ScopedVertexAttribPointer();
+
+ private:
+  void WrapImpl(GLuint index);
+};
+
+struct ScopedPackState final {
+ private:
+  GLContext* const mGL;
+  GLint mAlignment;
+
+  GLuint mPixelBuffer;
+  GLint mRowLength;
+  GLint mSkipPixels;
+  GLint mSkipRows;
+
+ public:
+  explicit ScopedPackState(GLContext* gl);
+  ~ScopedPackState();
+
+  // Returns whether the stride was handled successfully.
+  bool SetForWidthAndStrideRGBA(GLsizei aWidth, GLsizei aStride);
+};
+
+struct ResetUnpackState final {
+ private:
+  GLContext* const mGL;
+  GLuint mAlignment;
+
+  GLuint mPBO;
+  GLuint mRowLength;
+  GLuint mImageHeight;
+  GLuint mSkipPixels;
+  GLuint mSkipRows;
+  GLuint mSkipImages;
+
+ public:
+  explicit ResetUnpackState(GLContext* gl);
+  ~ResetUnpackState();
+};
+
+struct ScopedBindPBO final {
+ private:
+  GLContext* const mGL;
+  const GLenum mTarget;
+  const GLuint mPBO;
+
+ public:
+  ScopedBindPBO(GLContext* gl, GLenum target);
+  ~ScopedBindPBO();
+};
+
+} /* namespace gl */
+} /* namespace mozilla */
+
+#endif /* SCOPEDGLHELPERS_H_ */
diff --git a/gfx/gl/SharedSurface.cpp b/gfx/gl/SharedSurface.cpp
new file mode 100644
index 0000000000..32f480a44d
--- /dev/null
+++ b/gfx/gl/SharedSurface.cpp
@@ -0,0 +1,152 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SharedSurface.h"
+
+#include "../2d/2D.h"
+#include "GLBlitHelper.h"
+#include "GLContext.h"
+#include "GLReadTexImageHelper.h"
+#include "GLScreenBuffer.h"
+#include "nsThreadUtils.h"
+#include "ScopedGLHelpers.h"
+#include "SharedSurfaceGL.h"
+#include "SharedSurfaceEGL.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/layers/CompositorTypes.h"
+#include "mozilla/layers/TextureClientSharedSurface.h"
+#include "mozilla/layers/TextureForwarder.h"
+#include "mozilla/StaticPrefs_webgl.h"
+#include "mozilla/Unused.h"
+#include "VRManagerChild.h"
+
+#ifdef XP_WIN
+#  include "SharedSurfaceANGLE.h"
+#  include "SharedSurfaceD3D11Interop.h"
+#endif
+
+#ifdef XP_MACOSX
+#  include "SharedSurfaceIO.h"
+#endif
+
+#ifdef MOZ_WAYLAND
+#  include "gfxPlatformGtk.h"
+#  include "SharedSurfaceDMABUF.h"
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "SharedSurfaceAndroidHardwareBuffer.h"
+#endif
+
+namespace mozilla {
+namespace gl {
+
+////////////////////////////////////////////////////////////////////////
+// SharedSurface
+
+SharedSurface::SharedSurface(const SharedSurfaceDesc& desc,
+                             UniquePtr<MozFramebuffer> fb)
+    : mDesc(desc), mFb(std::move(fb)) {}
+
+SharedSurface::~SharedSurface() = default;
+
+void SharedSurface::LockProd() {
+  MOZ_ASSERT(!mIsLocked);
+
+  LockProdImpl();
+
+  mDesc.gl->LockSurface(this);
+  mIsLocked = true;
+}
+
+void SharedSurface::UnlockProd() {
+  if (!mIsLocked) return;
+
+  UnlockProdImpl();
+
+  mDesc.gl->UnlockSurface(this);
+  mIsLocked = false;
+}
+
+////////////////////////////////////////////////////////////////////////
+// SurfaceFactory
+
+/* static */
+UniquePtr<SurfaceFactory> SurfaceFactory::Create(
+    GLContext* const pGl, const layers::TextureType consumerType) {
+  auto& gl = *pGl;
+
+  switch (consumerType) {
+    case layers::TextureType::D3D11:
+#ifdef XP_WIN
+      if (gl.IsANGLE()) {
+        return SurfaceFactory_ANGLEShareHandle::Create(gl);
+      }
+      if (StaticPrefs::webgl_dxgl_enabled()) {
+        return SurfaceFactory_D3D11Interop::Create(gl);
+      }
+#endif
+      return nullptr;
+
+    case layers::TextureType::MacIOSurface:
+#ifdef XP_MACOSX
+      return MakeUnique<SurfaceFactory_IOSurface>(gl);
+#else
+      return nullptr;
+#endif
+
+    case layers::TextureType::DMABUF:
+#ifdef MOZ_WAYLAND
+      if (gl.GetContextType() == GLContextType::EGL &&
+          widget::DMABufDevice::IsDMABufWebGLEnabled()) {
+        return SurfaceFactory_DMABUF::Create(gl);
+      }
+#endif
+      return nullptr;
+
+    case layers::TextureType::AndroidNativeWindow:
+#ifdef MOZ_WIDGET_ANDROID
+      return MakeUnique<SurfaceFactory_SurfaceTexture>(gl);
+#else
+      return nullptr;
+#endif
+
+    case layers::TextureType::AndroidHardwareBuffer:
+#ifdef MOZ_WIDGET_ANDROID
+      if (XRE_IsGPUProcess()) {
+        // Enable SharedSurface of AndroidHardwareBuffer only in GPU process.
+        return SurfaceFactory_AndroidHardwareBuffer::Create(gl);
+      }
+#endif
+      return nullptr;
+
+    case layers::TextureType::EGLImage:
+#ifdef MOZ_WIDGET_ANDROID
+      if (XRE_IsParentProcess()) {
+        return SurfaceFactory_EGLImage::Create(gl);
+      }
+#endif
+      return nullptr;
+
+    case layers::TextureType::Unknown:
+    case layers::TextureType::Last:
+      break;
+  }
+
+#ifdef MOZ_X11
+  // Silence a warning.
+  Unused << gl;
+#endif
+
+  return nullptr;
+}
+
+SurfaceFactory::SurfaceFactory(const PartialSharedSurfaceDesc& partialDesc)
+    : mDesc(partialDesc), mMutex("SurfaceFactor::mMutex") {}
+
+SurfaceFactory::~SurfaceFactory() = default;
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/SharedSurface.h b/gfx/gl/SharedSurface.h
new file mode 100644
index 0000000000..4168de69a2
--- /dev/null
+++ b/gfx/gl/SharedSurface.h
@@ -0,0 +1,199 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* SharedSurface abstracts an actual surface (can be a GL texture, but
+ * not necessarily) that handles sharing.
+ * Its specializations are:
+ *     SharedSurface_Basic (client-side bitmap, does readback)
+ *     SharedSurface_GLTexture
+ *     SharedSurface_EGLImage
+ *     SharedSurface_ANGLEShareHandle
+ */
+
+#ifndef SHARED_SURFACE_H_
+#define SHARED_SURFACE_H_
+
+#include <queue>
+#include <set>
+#include <stdint.h>
+
+#include "GLContext.h"  // Bug 1635644
+#include "GLContextTypes.h"
+#include "GLDefs.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/gfx/Point.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/WeakPtr.h"
+#include "SurfaceTypes.h"
+
+class nsIThread;
+
+namespace mozilla {
+namespace gfx {
+class DataSourceSurface;
+class DrawTarget;
+}  // namespace gfx
+
+namespace layers {
+class KnowsCompositor;
+enum class LayersBackend : int8_t;
+class LayersIPCChannel;
+class SharedSurfaceTextureClient;
+class SurfaceDescriptor;
+class TextureClient;
+enum class TextureFlags : uint32_t;
+enum class TextureType : int8_t;
+}  // namespace layers
+
+namespace gl {
+
+class MozFramebuffer;
+struct ScopedBindFramebuffer;
+class SurfaceFactory;
+
+struct PartialSharedSurfaceDesc {
+  const WeakPtr<GLContext> gl;
+  const SharedSurfaceType type;
+  const layers::TextureType consumerType;
+  const bool canRecycle;
+
+  bool operator==(const PartialSharedSurfaceDesc& rhs) const {
+    return gl == rhs.gl && type == rhs.type &&
+           consumerType == rhs.consumerType && canRecycle == rhs.canRecycle;
+  }
+};
+struct SharedSurfaceDesc : public PartialSharedSurfaceDesc {
+  gfx::IntSize size = {};
+  gfx::ColorSpace2 colorSpace = gfx::ColorSpace2::UNKNOWN;
+
+  bool operator==(const SharedSurfaceDesc& rhs) const {
+    return PartialSharedSurfaceDesc::operator==(rhs) && size == rhs.size &&
+           colorSpace == rhs.colorSpace;
+  }
+  bool operator!=(const SharedSurfaceDesc& rhs) const {
+    return !(*this == rhs);
+  }
+};
+
+class SharedSurface {
+ public:
+  const SharedSurfaceDesc mDesc;
+  const UniquePtr<MozFramebuffer> mFb;  // null if we should use fb=0.
+
+ protected:
+  bool mIsLocked = false;
+  bool mIsProducerAcquired = false;
+
+  SharedSurface(const SharedSurfaceDesc&, UniquePtr<MozFramebuffer>);
+
+ public:
+  virtual ~SharedSurface();
+
+  bool IsLocked() const { return mIsLocked; }
+  bool IsProducerAcquired() const { return mIsProducerAcquired; }
+
+  // This locks the SharedSurface as the production buffer for the context.
+  // This is needed by backends which use PBuffers and/or EGLSurfaces.
+  void LockProd();
+
+  // Unlocking is harmless if we're already unlocked.
+  void UnlockProd();
+
+  // This surface has been moved to the front buffer and will not be locked
+  // again until it is recycled. Do any finalization steps here.
+  virtual void Commit() {}
+
+ protected:
+  virtual void LockProdImpl(){};
+  virtual void UnlockProdImpl(){};
+
+  virtual void ProducerAcquireImpl(){};
+  virtual void ProducerReleaseImpl(){};
+
+  virtual void ProducerReadAcquireImpl() { ProducerAcquireImpl(); }
+  virtual void ProducerReadReleaseImpl() { ProducerReleaseImpl(); }
+
+ public:
+  void ProducerAcquire() {
+    MOZ_ASSERT(!mIsProducerAcquired);
+    ProducerAcquireImpl();
+    mIsProducerAcquired = true;
+  }
+  void ProducerRelease() {
+    MOZ_ASSERT(mIsProducerAcquired);
+    ProducerReleaseImpl();
+    mIsProducerAcquired = false;
+  }
+  void ProducerReadAcquire() {
+    MOZ_ASSERT(!mIsProducerAcquired);
+    ProducerReadAcquireImpl();
+    mIsProducerAcquired = true;
+  }
+  void ProducerReadRelease() {
+    MOZ_ASSERT(mIsProducerAcquired);
+    ProducerReadReleaseImpl();
+    mIsProducerAcquired = false;
+  }
+
+  // This function waits until the buffer is no longer being used.
+  // To optimize the performance, some implementaions recycle SharedSurfaces
+  // even when its buffer is still being used.
+  virtual void WaitForBufferOwnership() {}
+
+  // Returns true if the buffer is available.
+  // You can call WaitForBufferOwnership to wait for availability.
+  virtual bool IsBufferAvailable() const { return true; }
+
+  virtual bool NeedsIndirectReads() const { return false; }
+
+  // Returns true if the surface is still valid to use. If false, the underlying
+  // resource has been released and we must allocate a new surface instead.
+  virtual bool IsValid() const { return true; };
+
+  virtual Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() = 0;
+};
+
+// -
+
+class SurfaceFactory {
+ public:
+  const PartialSharedSurfaceDesc mDesc;
+
+  layers::TextureType GetConsumerType() const { return mDesc.consumerType; }
+
+ protected:
+  Mutex mMutex MOZ_UNANNOTATED;
+
+ public:
+  static UniquePtr<SurfaceFactory> Create(GLContext*, layers::TextureType);
+
+ protected:
+  explicit SurfaceFactory(const PartialSharedSurfaceDesc&);
+
+ public:
+  virtual ~SurfaceFactory();
+
+ protected:
+  virtual UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc&) = 0;
+
+ public:
+  UniquePtr<SharedSurface> CreateShared(const gfx::IntSize& size,
+                                        gfx::ColorSpace2 cs) {
+    return CreateSharedImpl({mDesc, size, cs});
+  }
+};
+
+template <typename T>
+inline UniquePtr<T> AsUnique(T* const p) {
+  return UniquePtr<T>(p);
+}
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // SHARED_SURFACE_H_
diff --git a/gfx/gl/SharedSurfaceANGLE.cpp b/gfx/gl/SharedSurfaceANGLE.cpp
new file mode 100644
index 0000000000..25c499e4dc
--- /dev/null
+++ b/gfx/gl/SharedSurfaceANGLE.cpp
@@ -0,0 +1,259 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SharedSurfaceANGLE.h"
+
+#include <d3d11.h>
+#include "GLContextEGL.h"
+#include "GLLibraryEGL.h"
+#include "mozilla/gfx/DeviceManagerDx.h"
+#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor, etc
+
+namespace mozilla {
+namespace gl {
+
+// Returns `EGL_NO_SURFACE` (`0`) on error.
+static EGLSurface CreatePBufferSurface(EglDisplay* egl, EGLConfig config,
+                                       const gfx::IntSize& size) {
+  const EGLint attribs[] = {LOCAL_EGL_WIDTH, size.width, LOCAL_EGL_HEIGHT,
+                            size.height, LOCAL_EGL_NONE};
+
+  EGLSurface surface = egl->fCreatePbufferSurface(config, attribs);
+  if (!surface) {
+    EGLint err = egl->mLib->fGetError();
+    gfxCriticalError() << "Failed to create Pbuffer surface error: "
+                       << gfx::hexa(err) << " Size : " << size;
+    return 0;
+  }
+
+  return surface;
+}
+
+/*static*/
+UniquePtr<SharedSurface_ANGLEShareHandle>
+SharedSurface_ANGLEShareHandle::Create(const SharedSurfaceDesc& desc) {
+  const auto& gle = GLContextEGL::Cast(desc.gl);
+  const auto& egl = gle->mEgl;
+  MOZ_ASSERT(egl);
+  MOZ_ASSERT(egl->IsExtensionSupported(
+      EGLExtension::ANGLE_surface_d3d_texture_2d_share_handle));
+
+  const auto& config = gle->mSurfaceConfig;
+  MOZ_ASSERT(config);
+
+  EGLSurface pbuffer = CreatePBufferSurface(egl.get(), config, desc.size);
+  if (!pbuffer) return nullptr;
+
+  // Declare everything before 'goto's.
+  HANDLE shareHandle = nullptr;
+  bool ok = egl->fQuerySurfacePointerANGLE(
+      pbuffer, LOCAL_EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE, &shareHandle);
+  if (!ok) {
+    egl->fDestroySurface(pbuffer);
+    return nullptr;
+  }
+  void* opaqueKeyedMutex = nullptr;
+  egl->fQuerySurfacePointerANGLE(pbuffer, LOCAL_EGL_DXGI_KEYED_MUTEX_ANGLE,
+                                 &opaqueKeyedMutex);
+  RefPtr<IDXGIKeyedMutex> keyedMutex =
+      static_cast<IDXGIKeyedMutex*>(opaqueKeyedMutex);
+#ifdef DEBUG
+  if (!keyedMutex) {
+    std::string envStr("1");
+    static auto env = PR_GetEnv("MOZ_REQUIRE_KEYED_MUTEX");
+    if (env) {
+      envStr = env;
+    }
+    if (envStr != "0") {
+      MOZ_ASSERT(keyedMutex, "set MOZ_REQUIRE_KEYED_MUTEX=0 to allow");
+    }
+  }
+#endif
+
+  return AsUnique(new SharedSurface_ANGLEShareHandle(desc, egl, pbuffer,
+                                                     shareHandle, keyedMutex));
+}
+
+SharedSurface_ANGLEShareHandle::SharedSurface_ANGLEShareHandle(
+    const SharedSurfaceDesc& desc, const std::weak_ptr<EglDisplay>& egl,
+    EGLSurface pbuffer, HANDLE shareHandle,
+    const RefPtr<IDXGIKeyedMutex>& keyedMutex)
+    : SharedSurface(desc, nullptr),
+      mEGL(egl),
+      mPBuffer(pbuffer),
+      mShareHandle(shareHandle),
+      mKeyedMutex(keyedMutex) {}
+
+SharedSurface_ANGLEShareHandle::~SharedSurface_ANGLEShareHandle() {
+  const auto& gl = mDesc.gl;
+
+  if (gl && GLContextEGL::Cast(gl)->GetEGLSurfaceOverride() == mPBuffer) {
+    GLContextEGL::Cast(gl)->SetEGLSurfaceOverride(EGL_NO_SURFACE);
+  }
+  const auto egl = mEGL.lock();
+  if (egl) {
+    egl->fDestroySurface(mPBuffer);
+  }
+}
+
+void SharedSurface_ANGLEShareHandle::LockProdImpl() {
+  const auto& gl = mDesc.gl;
+  GLContextEGL::Cast(gl)->SetEGLSurfaceOverride(mPBuffer);
+}
+
+void SharedSurface_ANGLEShareHandle::UnlockProdImpl() {}
+
+void SharedSurface_ANGLEShareHandle::ProducerAcquireImpl() {
+  if (mKeyedMutex) {
+    HRESULT hr = mKeyedMutex->AcquireSync(0, 10000);
+    if (hr == WAIT_TIMEOUT) {
+      MOZ_CRASH("GFX: ANGLE share handle timeout");
+    }
+  }
+}
+
+void SharedSurface_ANGLEShareHandle::ProducerReleaseImpl() {
+  const auto& gl = mDesc.gl;
+  if (mKeyedMutex) {
+    // XXX: ReleaseSync() has an implicit flush of the D3D commands
+    // whether we need Flush() or not depends on the ANGLE semantics.
+    // For now, we'll just do it
+    gl->fFlush();
+    mKeyedMutex->ReleaseSync(0);
+    return;
+  }
+  gl->fFinish();
+}
+
+void SharedSurface_ANGLEShareHandle::ProducerReadAcquireImpl() {
+  ProducerAcquireImpl();
+}
+
+void SharedSurface_ANGLEShareHandle::ProducerReadReleaseImpl() {
+  if (mKeyedMutex) {
+    mKeyedMutex->ReleaseSync(0);
+    return;
+  }
+}
+
+Maybe<layers::SurfaceDescriptor>
+SharedSurface_ANGLEShareHandle::ToSurfaceDescriptor() {
+  const auto format = gfx::SurfaceFormat::B8G8R8A8;
+  return Some(layers::SurfaceDescriptorD3D10(
+      (WindowsHandle)mShareHandle, /* gpuProcessTextureId */ Nothing(),
+      /* arrayIndex */ 0, format, mDesc.size, mDesc.colorSpace,
+      gfx::ColorRange::FULL));
+}
+
+class ScopedLockTexture final {
+ public:
+  explicit ScopedLockTexture(ID3D11Texture2D* texture, bool* succeeded)
+      : mIsLocked(false), mTexture(texture) {
+    MOZ_ASSERT(NS_IsMainThread(),
+               "Must be on the main thread to use d3d11 immediate context");
+    MOZ_ASSERT(mTexture);
+    MOZ_ASSERT(succeeded);
+    *succeeded = false;
+
+    HRESULT hr;
+    mTexture->QueryInterface((IDXGIKeyedMutex**)getter_AddRefs(mMutex));
+    if (mMutex) {
+      hr = mMutex->AcquireSync(0, 10000);
+      if (hr == WAIT_TIMEOUT) {
+        MOZ_CRASH("GFX: ANGLE scoped lock timeout");
+      }
+
+      if (FAILED(hr)) {
+        NS_WARNING("Failed to lock the texture");
+        return;
+      }
+    }
+
+    RefPtr<ID3D11Device> device =
+        gfx::DeviceManagerDx::Get()->GetContentDevice();
+    if (!device) {
+      return;
+    }
+
+    device->GetImmediateContext(getter_AddRefs(mDeviceContext));
+
+    mTexture->GetDesc(&mDesc);
+    mDesc.BindFlags = 0;
+    mDesc.Usage = D3D11_USAGE_STAGING;
+    mDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
+    mDesc.MiscFlags = 0;
+
+    hr = device->CreateTexture2D(&mDesc, nullptr,
+                                 getter_AddRefs(mCopiedTexture));
+
+    if (FAILED(hr)) {
+      return;
+    }
+
+    mDeviceContext->CopyResource(mCopiedTexture, mTexture);
+
+    hr = mDeviceContext->Map(mCopiedTexture, 0, D3D11_MAP_READ, 0,
+                             &mSubresource);
+    if (FAILED(hr)) {
+      return;
+    }
+
+    *succeeded = true;
+    mIsLocked = true;
+  }
+
+  ~ScopedLockTexture() {
+    mDeviceContext->Unmap(mCopiedTexture, 0);
+    if (mMutex) {
+      HRESULT hr = mMutex->ReleaseSync(0);
+      if (FAILED(hr)) {
+        NS_WARNING("Failed to unlock the texture");
+      }
+    }
+    mIsLocked = false;
+  }
+
+  bool mIsLocked;
+  RefPtr<ID3D11Texture2D> mTexture;
+  RefPtr<ID3D11Texture2D> mCopiedTexture;
+  RefPtr<IDXGIKeyedMutex> mMutex;
+  RefPtr<ID3D11DeviceContext> mDeviceContext;
+  D3D11_TEXTURE2D_DESC mDesc;
+  D3D11_MAPPED_SUBRESOURCE mSubresource;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// Factory
+
+/*static*/
+UniquePtr<SurfaceFactory_ANGLEShareHandle>
+SurfaceFactory_ANGLEShareHandle::Create(GLContext& gl) {
+  if (!gl.IsANGLE()) return nullptr;
+
+  const auto& gle = *GLContextEGL::Cast(&gl);
+  const auto& egl = gle.mEgl;
+
+  if (!egl->IsExtensionSupported(
+          EGLExtension::ANGLE_surface_d3d_texture_2d_share_handle)) {
+    return nullptr;
+  }
+
+  if (XRE_IsContentProcess()) {
+    gfxPlatform::GetPlatform()->EnsureDevicesInitialized();
+  }
+
+  gfx::DeviceManagerDx* dm = gfx::DeviceManagerDx::Get();
+  MOZ_ASSERT(dm);
+  if (gl.IsWARP() != dm->IsWARP() || !dm->TextureSharingWorks()) {
+    return nullptr;
+  }
+
+  return AsUnique(new SurfaceFactory_ANGLEShareHandle(
+      {&gl, SharedSurfaceType::EGLSurfaceANGLE, layers::TextureType::D3D11,
+       true}));
+}
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/SharedSurfaceANGLE.h b/gfx/gl/SharedSurfaceANGLE.h
new file mode 100644
index 0000000000..dc9697030a
--- /dev/null
+++ b/gfx/gl/SharedSurfaceANGLE.h
@@ -0,0 +1,69 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_SURFACE_ANGLE_H_
+#define SHARED_SURFACE_ANGLE_H_
+
+#include <windows.h>
+#include <memory>
+#include "SharedSurface.h"
+
+struct IDXGIKeyedMutex;
+struct ID3D11Texture2D;
+
+namespace mozilla {
+namespace gl {
+
+class GLContext;
+class EglDisplay;
+
+class SharedSurface_ANGLEShareHandle final : public SharedSurface {
+ public:
+  const std::weak_ptr<EglDisplay> mEGL;
+  const EGLSurface mPBuffer;
+  const HANDLE mShareHandle;
+  const RefPtr<IDXGIKeyedMutex> mKeyedMutex;
+
+  static UniquePtr<SharedSurface_ANGLEShareHandle> Create(
+      const SharedSurfaceDesc&);
+
+ private:
+  SharedSurface_ANGLEShareHandle(const SharedSurfaceDesc&,
+                                 const std::weak_ptr<EglDisplay>& egl,
+                                 EGLSurface pbuffer, HANDLE shareHandle,
+                                 const RefPtr<IDXGIKeyedMutex>& keyedMutex);
+
+ public:
+  virtual ~SharedSurface_ANGLEShareHandle();
+
+  virtual void LockProdImpl() override;
+  virtual void UnlockProdImpl() override;
+
+  virtual void ProducerAcquireImpl() override;
+  virtual void ProducerReleaseImpl() override;
+  virtual void ProducerReadAcquireImpl() override;
+  virtual void ProducerReadReleaseImpl() override;
+
+  Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+};
+
+class SurfaceFactory_ANGLEShareHandle final : public SurfaceFactory {
+ public:
+  static UniquePtr<SurfaceFactory_ANGLEShareHandle> Create(GLContext& gl);
+
+ private:
+  explicit SurfaceFactory_ANGLEShareHandle(const PartialSharedSurfaceDesc& desc)
+      : SurfaceFactory(desc) {}
+
+  virtual UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc& desc) override {
+    return SharedSurface_ANGLEShareHandle::Create(desc);
+  }
+};
+
+}  // namespace gl
+} /* namespace mozilla */
+
+#endif /* SHARED_SURFACE_ANGLE_H_ */
diff --git a/gfx/gl/SharedSurfaceAndroidHardwareBuffer.cpp b/gfx/gl/SharedSurfaceAndroidHardwareBuffer.cpp
new file mode 100644
index 0000000000..00f925ce75
--- /dev/null
+++ b/gfx/gl/SharedSurfaceAndroidHardwareBuffer.cpp
@@ -0,0 +1,168 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SharedSurfaceAndroidHardwareBuffer.h"
+
+#include "GLBlitHelper.h"
+#include "GLContextEGL.h"
+#include "GLContextProvider.h"
+#include "GLLibraryEGL.h"
+#include "GLReadTexImageHelper.h"
+#include "MozFramebuffer.h"
+#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor, etc
+#include "mozilla/layers/AndroidHardwareBuffer.h"
+#include "ScopedGLHelpers.h"
+#include "SharedSurface.h"
+
+namespace mozilla {
+namespace gl {
+
+/*static*/
+UniquePtr<SharedSurface_AndroidHardwareBuffer>
+SharedSurface_AndroidHardwareBuffer::Create(const SharedSurfaceDesc& desc) {
+  const auto& gle = GLContextEGL::Cast(desc.gl);
+  const auto& egl = gle->mEgl;
+
+  RefPtr<layers::AndroidHardwareBuffer> buffer =
+      layers::AndroidHardwareBuffer::Create(desc.size,
+                                            gfx::SurfaceFormat::R8G8B8A8);
+  if (!buffer) {
+    return nullptr;
+  }
+
+  const EGLint attrs[] = {
+      LOCAL_EGL_IMAGE_PRESERVED,
+      LOCAL_EGL_TRUE,
+      LOCAL_EGL_NONE,
+      LOCAL_EGL_NONE,
+  };
+
+  EGLClientBuffer clientBuffer =
+      egl->mLib->fGetNativeClientBufferANDROID(buffer->GetNativeBuffer());
+  const auto image = egl->fCreateImage(
+      EGL_NO_CONTEXT, LOCAL_EGL_NATIVE_BUFFER_ANDROID, clientBuffer, attrs);
+  if (!image) {
+    return nullptr;
+  }
+
+  auto tex = MakeUnique<Texture>(*desc.gl);
+  {
+    ScopedBindTexture texture(gle, tex->name, LOCAL_GL_TEXTURE_2D);
+    gle->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER,
+                        LOCAL_GL_LINEAR);
+    gle->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER,
+                        LOCAL_GL_LINEAR);
+    gle->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S,
+                        LOCAL_GL_CLAMP_TO_EDGE);
+    gle->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T,
+                        LOCAL_GL_CLAMP_TO_EDGE);
+    gle->fEGLImageTargetTexture2D(LOCAL_GL_TEXTURE_2D, image);
+    egl->fDestroyImage(image);
+  }
+
+  const GLenum target = LOCAL_GL_TEXTURE_2D;
+  auto fb = MozFramebuffer::CreateForBacking(desc.gl, desc.size, 0, false,
+                                             target, tex->name);
+  if (!fb) {
+    return nullptr;
+  }
+
+  return AsUnique(new SharedSurface_AndroidHardwareBuffer(
+      desc, std::move(fb), std::move(tex), buffer));
+}
+
+SharedSurface_AndroidHardwareBuffer::SharedSurface_AndroidHardwareBuffer(
+    const SharedSurfaceDesc& desc, UniquePtr<MozFramebuffer> fb,
+    UniquePtr<Texture> tex, RefPtr<layers::AndroidHardwareBuffer> buffer)
+    : SharedSurface(desc, std::move(fb)),
+      mTex(std::move(tex)),
+      mAndroidHardwareBuffer(buffer) {}
+
+SharedSurface_AndroidHardwareBuffer::~SharedSurface_AndroidHardwareBuffer() {
+  const auto& gl = mDesc.gl;
+  if (!gl || !gl->MakeCurrent()) {
+    return;
+  }
+  const auto& gle = GLContextEGL::Cast(gl);
+  const auto& egl = gle->mEgl;
+
+  if (mSync) {
+    egl->fDestroySync(mSync);
+    mSync = 0;
+  }
+}
+
+void SharedSurface_AndroidHardwareBuffer::ProducerReleaseImpl() {
+  const auto& gl = mDesc.gl;
+  if (!gl || !gl->MakeCurrent()) {
+    return;
+  }
+  const auto& gle = GLContextEGL::Cast(gl);
+  const auto& egl = gle->mEgl;
+
+  if (mSync) {
+    MOZ_ALWAYS_TRUE(egl->fDestroySync(mSync));
+    mSync = 0;
+  }
+
+  mSync = egl->fCreateSync(LOCAL_EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr);
+  MOZ_ASSERT(mSync);
+  int rawFd = egl->fDupNativeFenceFDANDROID(mSync);
+  if (rawFd >= 0) {
+    auto fenceFd = ipc::FileDescriptor(UniqueFileHandle(rawFd));
+    mAndroidHardwareBuffer->SetAcquireFence(std::move(fenceFd));
+  }
+
+  gl->fFlush();
+}
+
+Maybe<layers::SurfaceDescriptor>
+SharedSurface_AndroidHardwareBuffer::ToSurfaceDescriptor() {
+  return Some(layers::SurfaceDescriptorAndroidHardwareBuffer(
+      mAndroidHardwareBuffer->mId, mAndroidHardwareBuffer->mSize,
+      mAndroidHardwareBuffer->mFormat));
+}
+
+void SharedSurface_AndroidHardwareBuffer::WaitForBufferOwnership() {
+  ipc::FileDescriptor fenceFd =
+      mAndroidHardwareBuffer->GetAndResetReleaseFence();
+  if (!fenceFd.IsValid()) {
+    return;
+  }
+
+  const auto& gle = GLContextEGL::Cast(mDesc.gl);
+  const auto& egl = gle->mEgl;
+
+  auto rawFD = fenceFd.TakePlatformHandle();
+  const EGLint attribs[] = {LOCAL_EGL_SYNC_NATIVE_FENCE_FD_ANDROID, rawFD.get(),
+                            LOCAL_EGL_NONE};
+
+  EGLSync sync = egl->fCreateSync(LOCAL_EGL_SYNC_NATIVE_FENCE_ANDROID, attribs);
+  if (!sync) {
+    gfxCriticalNote << "Failed to create EGLSync from fd";
+    return;
+  }
+  // Release fd here, since it is owned by EGLSync
+  Unused << rawFD.release();
+
+  egl->fClientWaitSync(sync, 0, LOCAL_EGL_FOREVER);
+  egl->fDestroySync(sync);
+}
+
+/*static*/
+UniquePtr<SurfaceFactory_AndroidHardwareBuffer>
+SurfaceFactory_AndroidHardwareBuffer::Create(GLContext& gl) {
+  const auto partialDesc = PartialSharedSurfaceDesc{
+      &gl,
+      SharedSurfaceType::AndroidHardwareBuffer,
+      layers::TextureType::AndroidHardwareBuffer,
+      true,
+  };
+  return AsUnique(new SurfaceFactory_AndroidHardwareBuffer(partialDesc));
+}
+
+}  // namespace gl
+
+} /* namespace mozilla */
diff --git a/gfx/gl/SharedSurfaceAndroidHardwareBuffer.h b/gfx/gl/SharedSurfaceAndroidHardwareBuffer.h
new file mode 100644
index 0000000000..ef40ad622d
--- /dev/null
+++ b/gfx/gl/SharedSurfaceAndroidHardwareBuffer.h
@@ -0,0 +1,70 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_SURFACE_ANDROID_HARDWARE_BUFFER_H_
+#define SHARED_SURFACE_ANDROID_HARDWARE_BUFFER_H_
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Mutex.h"
+#include "CompositorTypes.h"
+#include "SharedSurface.h"
+
+namespace mozilla {
+
+namespace layers {
+class AndroidHardwareBuffer;
+}  // namespace layers
+
+namespace gl {
+
+class SharedSurface_AndroidHardwareBuffer final : public SharedSurface {
+ public:
+  const UniquePtr<Texture> mTex;
+  const RefPtr<layers::AndroidHardwareBuffer> mAndroidHardwareBuffer;
+  EGLSync mSync = 0;
+
+  static UniquePtr<SharedSurface_AndroidHardwareBuffer> Create(
+      const SharedSurfaceDesc&);
+
+ protected:
+  SharedSurface_AndroidHardwareBuffer(
+      const SharedSurfaceDesc&, UniquePtr<MozFramebuffer>, UniquePtr<Texture>,
+      RefPtr<layers::AndroidHardwareBuffer> buffer);
+
+ public:
+  virtual ~SharedSurface_AndroidHardwareBuffer();
+
+  void LockProdImpl() override {}
+  void UnlockProdImpl() override {}
+
+  void ProducerAcquireImpl() override {}
+  void ProducerReleaseImpl() override;
+
+  Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+
+  void WaitForBufferOwnership() override;
+};
+
+class SurfaceFactory_AndroidHardwareBuffer final : public SurfaceFactory {
+ public:
+  static UniquePtr<SurfaceFactory_AndroidHardwareBuffer> Create(GLContext&);
+
+ private:
+  explicit SurfaceFactory_AndroidHardwareBuffer(
+      const PartialSharedSurfaceDesc& desc)
+      : SurfaceFactory(desc) {}
+
+ public:
+  virtual UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc& desc) override {
+    return SharedSurface_AndroidHardwareBuffer::Create(desc);
+  }
+};
+
+}  // namespace gl
+
+} /* namespace mozilla */
+
+#endif /* SHARED_SURFACE_ANDROID_HARDWARE_BUFFER_H_ */
diff --git a/gfx/gl/SharedSurfaceD3D11Interop.cpp b/gfx/gl/SharedSurfaceD3D11Interop.cpp
new file mode 100644
index 0000000000..df69307017
--- /dev/null
+++ b/gfx/gl/SharedSurfaceD3D11Interop.cpp
@@ -0,0 +1,481 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SharedSurfaceD3D11Interop.h"
+
+#include <d3d11.h>
+#include <d3d11_1.h>
+#include "GLContext.h"
+#include "GLBlitHelper.h"
+#include "MozFramebuffer.h"
+#include "ScopedGLHelpers.h"
+#include "WGLLibrary.h"
+#include "nsPrintfCString.h"
+#include "mozilla/gfx/DeviceManagerDx.h"
+#include "mozilla/gfx/Logging.h"
+#include "mozilla/layers/LayersSurfaces.h"
+#include "mozilla/StaticPrefs_webgl.h"
+
+namespace mozilla {
+namespace gl {
+
+/*
+Sample Code for WGL_NV_DX_interop2:
+Example: Render to Direct3D 11 backbuffer with openGL:
+
+// create D3D11 device, context and swap chain.
+ID3D11Device *device;
+ID3D11DeviceContext *devCtx;
+IDXGISwapChain *swapChain;
+
+DXGI_SWAP_CHAIN_DESC scd;
+
+<set appropriate swap chain parameters in scd>
+
+hr = D3D11CreateDeviceAndSwapChain(
+         NULL,                        // pAdapter
+         D3D_DRIVER_TYPE_HARDWARE,    // DriverType
+         NULL,                        // Software
+         0,                           // Flags (Do not set
+                                      // D3D11_CREATE_DEVICE_SINGLETHREADED)
+         NULL,                        // pFeatureLevels
+         0,                           // FeatureLevels
+         D3D11_SDK_VERSION,           // SDKVersion
+         &scd,                        // pSwapChainDesc
+         &swapChain,                  // ppSwapChain
+         &device,                     // ppDevice
+         NULL,                        // pFeatureLevel
+         &devCtx);                    // ppImmediateContext
+
+// Fetch the swapchain backbuffer
+ID3D11Texture2D *dxColorbuffer;
+swapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID *)&dxColorbuffer);
+
+// Create depth stencil texture
+ID3D11Texture2D *dxDepthBuffer;
+D3D11_TEXTURE2D_DESC depthDesc;
+depthDesc.Usage = D3D11_USAGE_DEFAULT;
+<set other depthDesc parameters appropriately>
+
+// Create Views
+ID3D11RenderTargetView *colorBufferView;
+D3D11_RENDER_TARGET_VIEW_DESC rtd;
+<set rtd parameters appropriately>
+device->CreateRenderTargetView(dxColorbuffer, &rtd, &colorBufferView);
+
+ID3D11DepthStencilView *depthBufferView;
+D3D11_DEPTH_STENCIL_VIEW_DESC dsd;
+<set dsd parameters appropriately>
+device->CreateDepthStencilView(dxDepthBuffer, &dsd, &depthBufferView);
+
+// Attach back buffer and depth texture to redertarget for the device.
+devCtx->OMSetRenderTargets(1, &colorBufferView, depthBufferView);
+
+// Register D3D11 device with GL
+HANDLE gl_handleD3D;
+gl_handleD3D = wglDXOpenDeviceNV(device);
+
+// register the Direct3D color and depth/stencil buffers as
+// renderbuffers in opengl
+GLuint gl_names[2];
+HANDLE gl_handles[2];
+
+glGenRenderbuffers(2, gl_names);
+
+gl_handles[0] = wglDXRegisterObjectNV(gl_handleD3D, dxColorBuffer,
+                                      gl_names[0],
+                                      GL_RENDERBUFFER,
+                                      WGL_ACCESS_READ_WRITE_NV);
+
+gl_handles[1] = wglDXRegisterObjectNV(gl_handleD3D, dxDepthBuffer,
+                                      gl_names[1],
+                                      GL_RENDERBUFFER,
+                                      WGL_ACCESS_READ_WRITE_NV);
+
+// attach the Direct3D buffers to an FBO
+glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+                          GL_RENDERBUFFER, gl_names[0]);
+glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
+                          GL_RENDERBUFFER, gl_names[1]);
+glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
+                          GL_RENDERBUFFER, gl_names[1]);
+
+while (!done) {
+      <direct3d renders to the render targets>
+
+      // lock the render targets for GL access
+      wglDXLockObjectsNVX(gl_handleD3D, 2, gl_handles);
+
+      <opengl renders to the render targets>
+
+      // unlock the render targets
+      wglDXUnlockObjectsNVX(gl_handleD3D, 2, gl_handles);
+
+      <direct3d renders to the render targets and presents
+       the results on the screen>
+}
+*/
+
+////////////////////////////////////////////////////////////////////////////////
+// DXInterop2Device
+
+class ScopedContextState final {
+  ID3D11DeviceContext1* const mD3DContext;
+  RefPtr<ID3DDeviceContextState> mOldContextState;
+
+ public:
+  ScopedContextState(ID3D11DeviceContext1* d3dContext,
+                     ID3DDeviceContextState* newContextState)
+      : mD3DContext(d3dContext), mOldContextState(nullptr) {
+    if (!mD3DContext) return;
+
+    mD3DContext->SwapDeviceContextState(newContextState,
+                                        getter_AddRefs(mOldContextState));
+  }
+
+  ~ScopedContextState() {
+    if (!mD3DContext) return;
+
+    mD3DContext->SwapDeviceContextState(mOldContextState, nullptr);
+  }
+};
+
+class DXInterop2Device : public RefCounted<DXInterop2Device> {
+ public:
+  MOZ_DECLARE_REFCOUNTED_TYPENAME(DXInterop2Device)
+
+  WGLLibrary* const mWGL;
+  const RefPtr<ID3D11Device> mD3D;  // Only needed for lifetime guarantee.
+  const HANDLE mInteropDevice;
+  GLContext* const mGL;
+
+  // AMD workaround.
+  const RefPtr<ID3D11DeviceContext1> mD3DContext;
+  const RefPtr<ID3DDeviceContextState> mContextState;
+
+  static already_AddRefed<DXInterop2Device> Open(WGLLibrary* wgl,
+                                                 GLContext* gl) {
+    MOZ_ASSERT(wgl->HasDXInterop2());
+
+    const RefPtr<ID3D11Device> d3d =
+        gfx::DeviceManagerDx::Get()->GetContentDevice();
+    if (!d3d) {
+      gfxCriticalNote
+          << "DXInterop2Device::Open: Failed to create D3D11 device.";
+      return nullptr;
+    }
+
+    if (!gl->MakeCurrent()) return nullptr;
+
+    RefPtr<ID3D11DeviceContext1> d3dContext;
+    RefPtr<ID3DDeviceContextState> contextState;
+    if (gl->WorkAroundDriverBugs() && gl->Vendor() == GLVendor::ATI) {
+      // AMD calls ID3D10Device::Flush, so we need to be in ID3D10Device mode.
+      RefPtr<ID3D11Device1> d3d11_1;
+      auto hr =
+          d3d->QueryInterface(__uuidof(ID3D11Device1), getter_AddRefs(d3d11_1));
+      if (!SUCCEEDED(hr)) return nullptr;
+
+      d3d11_1->GetImmediateContext1(getter_AddRefs(d3dContext));
+      MOZ_ASSERT(d3dContext);
+
+      const D3D_FEATURE_LEVEL featureLevel10_0 = D3D_FEATURE_LEVEL_10_0;
+      hr = d3d11_1->CreateDeviceContextState(
+          0, &featureLevel10_0, 1, D3D11_SDK_VERSION, __uuidof(ID3D10Device),
+          nullptr, getter_AddRefs(contextState));
+      if (!SUCCEEDED(hr)) return nullptr;
+    }
+
+    const auto interopDevice = wgl->mSymbols.fDXOpenDeviceNV(d3d);
+    if (!interopDevice) {
+      gfxCriticalNote << "DXInterop2Device::Open: DXOpenDevice failed.";
+      return nullptr;
+    }
+
+    return MakeAndAddRef<DXInterop2Device>(wgl, d3d, interopDevice, gl,
+                                           d3dContext, contextState);
+  }
+
+  DXInterop2Device(WGLLibrary* wgl, ID3D11Device* d3d, HANDLE interopDevice,
+                   GLContext* gl, ID3D11DeviceContext1* d3dContext,
+                   ID3DDeviceContextState* contextState)
+      : mWGL(wgl),
+        mD3D(d3d),
+        mInteropDevice(interopDevice),
+        mGL(gl),
+        mD3DContext(d3dContext),
+        mContextState(contextState) {}
+
+  ~DXInterop2Device() {
+    const auto isCurrent = mGL->MakeCurrent();
+
+    if (mWGL->mSymbols.fDXCloseDeviceNV(mInteropDevice)) return;
+
+    if (isCurrent) {
+      // That shouldn't have failed.
+      const uint32_t error = GetLastError();
+      const nsPrintfCString errorMessage(
+          "wglDXCloseDevice(0x%p) failed:"
+          " GetLastError(): %u\n",
+          mInteropDevice, error);
+      gfxCriticalError() << errorMessage.BeginReading();
+    }
+  }
+
+  HANDLE RegisterObject(void* d3dObject, GLuint name, GLenum type,
+                        GLenum access) const {
+    if (!mGL->MakeCurrent()) return nullptr;
+
+    const ScopedContextState autoCS(mD3DContext, mContextState);
+    const auto ret = mWGL->mSymbols.fDXRegisterObjectNV(
+        mInteropDevice, d3dObject, name, type, access);
+    if (ret) return ret;
+
+    const uint32_t error = GetLastError();
+    const nsPrintfCString errorMessage(
+        "wglDXRegisterObject(0x%p, 0x%p, %u, 0x%04x,"
+        " 0x%04x) failed: GetLastError(): %u\n",
+        mInteropDevice, d3dObject, name, type, access, error);
+    gfxCriticalNote << errorMessage.BeginReading();
+    return nullptr;
+  }
+
+  bool UnregisterObject(HANDLE lockHandle) const {
+    const auto isCurrent = mGL->MakeCurrent();
+
+    const ScopedContextState autoCS(mD3DContext, mContextState);
+    if (mWGL->mSymbols.fDXUnregisterObjectNV(mInteropDevice, lockHandle))
+      return true;
+
+    if (!isCurrent) {
+      // That shouldn't have failed.
+      const uint32_t error = GetLastError();
+      const nsPrintfCString errorMessage(
+          "wglDXUnregisterObject(0x%p, 0x%p) failed:"
+          " GetLastError(): %u\n",
+          mInteropDevice, lockHandle, error);
+      gfxCriticalError() << errorMessage.BeginReading();
+    }
+    return false;
+  }
+
+  bool LockObject(HANDLE lockHandle) const {
+    MOZ_ASSERT(mGL->IsCurrent());
+
+    if (mWGL->mSymbols.fDXLockObjectsNV(mInteropDevice, 1, &lockHandle))
+      return true;
+
+    if (!mGL->MakeCurrent()) return false;
+
+    gfxCriticalNote << "wglDXLockObjects called without mGL being current."
+                    << " Retrying after MakeCurrent.";
+
+    if (mWGL->mSymbols.fDXLockObjectsNV(mInteropDevice, 1, &lockHandle))
+      return true;
+
+    const uint32_t error = GetLastError();
+    const nsPrintfCString errorMessage(
+        "wglDXLockObjects(0x%p, 1, {0x%p}) failed:"
+        " GetLastError(): %u\n",
+        mInteropDevice, lockHandle, error);
+    gfxCriticalError() << errorMessage.BeginReading();
+    return false;
+  }
+
+  bool UnlockObject(HANDLE lockHandle) const {
+    MOZ_ASSERT(mGL->IsCurrent());
+
+    if (mWGL->mSymbols.fDXUnlockObjectsNV(mInteropDevice, 1, &lockHandle))
+      return true;
+
+    if (!mGL->MakeCurrent()) return false;
+
+    gfxCriticalNote << "wglDXUnlockObjects called without mGL being current."
+                    << " Retrying after MakeCurrent.";
+
+    if (mWGL->mSymbols.fDXUnlockObjectsNV(mInteropDevice, 1, &lockHandle))
+      return true;
+
+    const uint32_t error = GetLastError();
+    const nsPrintfCString errorMessage(
+        "wglDXUnlockObjects(0x%p, 1, {0x%p}) failed:"
+        " GetLastError(): %u\n",
+        mInteropDevice, lockHandle, error);
+    gfxCriticalError() << errorMessage.BeginReading();
+    return false;
+  }
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// Shared Surface
+
+/*static*/
+UniquePtr<SharedSurface_D3D11Interop> SharedSurface_D3D11Interop::Create(
+    const SharedSurfaceDesc& desc, DXInterop2Device* interop) {
+  const auto& gl = desc.gl;
+  const auto& size = desc.size;
+  const auto& d3d = interop->mD3D;
+
+  auto data = Data{interop};
+
+  // Create a texture in case we need to readback.
+  const DXGI_FORMAT format = DXGI_FORMAT_B8G8R8A8_UNORM;
+  CD3D11_TEXTURE2D_DESC texDesc(format, size.width, size.height, 1, 1);
+  texDesc.MiscFlags = D3D11_RESOURCE_MISC_SHARED_KEYEDMUTEX;
+
+  auto hr =
+      d3d->CreateTexture2D(&texDesc, nullptr, getter_AddRefs(data.texD3D));
+  if (FAILED(hr)) {
+    NS_WARNING("Failed to create texture for CanvasLayer!");
+    return nullptr;
+  }
+
+  RefPtr<IDXGIResource> texDXGI;
+  hr = data.texD3D->QueryInterface(__uuidof(IDXGIResource),
+                                   getter_AddRefs(texDXGI));
+  if (FAILED(hr)) {
+    NS_WARNING("Failed to open texture for sharing!");
+    return nullptr;
+  }
+
+  texDXGI->GetSharedHandle(&data.dxgiHandle);
+
+  ////
+
+  if (!gl->MakeCurrent()) {
+    NS_WARNING("MakeCurrent failed.");
+    return nullptr;
+  }
+
+  data.interopRb = MakeUnique<Renderbuffer>(*gl);
+  data.lockHandle = interop->RegisterObject(data.texD3D, data.interopRb->name,
+                                            LOCAL_GL_RENDERBUFFER,
+                                            LOCAL_WGL_ACCESS_WRITE_DISCARD_NV);
+  if (!data.lockHandle) {
+    NS_WARNING("Failed to register D3D object with WGL.");
+    return nullptr;
+  }
+
+  auto fbForDrawing = MozFramebuffer::CreateForBacking(
+      gl, size, 0, false, LOCAL_GL_RENDERBUFFER, data.interopRb->name);
+  if (!fbForDrawing) return nullptr;
+
+  // -
+
+  {
+    GLint samples = 0;
+    {
+      const ScopedBindRenderbuffer bindRB(gl, data.interopRb->name);
+      gl->fGetRenderbufferParameteriv(LOCAL_GL_RENDERBUFFER,
+                                      LOCAL_GL_RENDERBUFFER_SAMPLES, &samples);
+    }
+    if (samples > 0) {  // Intel
+      // Intel's dx_interop GL-side textures have SAMPLES=1, likely because
+      // that's what the D3DTextures technically have. However, SAMPLES=1 is
+      // very different from SAMPLES=0 in GL. For more, see
+      // https://bugzilla.mozilla.org/show_bug.cgi?id=1325835
+
+      // Our ShSurf tex or rb must be single-sampled.
+      data.interopFbIfNeedsIndirect = std::move(fbForDrawing);
+      fbForDrawing = MozFramebuffer::Create(gl, size, 0, false);
+    }
+  }
+
+  // -
+
+  return AsUnique(new SharedSurface_D3D11Interop(desc, std::move(fbForDrawing),
+                                                 std::move(data)));
+}
+
+SharedSurface_D3D11Interop::SharedSurface_D3D11Interop(
+    const SharedSurfaceDesc& desc, UniquePtr<MozFramebuffer>&& fbForDrawing,
+    Data&& data)
+    : SharedSurface(desc, std::move(fbForDrawing)),
+      mData(std::move(data)),
+      mNeedsFinish(StaticPrefs::webgl_dxgl_needs_finish()) {}
+
+SharedSurface_D3D11Interop::~SharedSurface_D3D11Interop() {
+  MOZ_ASSERT(!IsProducerAcquired());
+
+  const auto& gl = mDesc.gl;
+  if (!gl || !gl->MakeCurrent()) return;
+
+  if (!mData.interop->UnregisterObject(mData.lockHandle)) {
+    NS_WARNING("Failed to release mLockHandle, possibly leaking it.");
+  }
+}
+
+void SharedSurface_D3D11Interop::ProducerAcquireImpl() {
+  MOZ_ASSERT(!mLockedForGL);
+
+  // Now we have the mutex, we can lock for GL.
+  MOZ_ALWAYS_TRUE(mData.interop->LockObject(mData.lockHandle));
+
+  mLockedForGL = true;
+}
+
+void SharedSurface_D3D11Interop::ProducerReleaseImpl() {
+  const auto& gl = mDesc.gl;
+  MOZ_ASSERT(mLockedForGL);
+
+  if (mData.interopFbIfNeedsIndirect) {
+    const ScopedBindFramebuffer bindFB(gl, mData.interopFbIfNeedsIndirect->mFB);
+    gl->BlitHelper()->DrawBlitTextureToFramebuffer(mFb->ColorTex(), mDesc.size,
+                                                   mDesc.size);
+  }
+
+  if (mNeedsFinish) {
+    gl->fFinish();
+  } else {
+    // We probably don't even need this.
+    gl->fFlush();
+  }
+  MOZ_ALWAYS_TRUE(mData.interop->UnlockObject(mData.lockHandle));
+
+  mLockedForGL = false;
+}
+
+Maybe<layers::SurfaceDescriptor>
+SharedSurface_D3D11Interop::ToSurfaceDescriptor() {
+  const auto format = gfx::SurfaceFormat::B8G8R8A8;
+  return Some(layers::SurfaceDescriptorD3D10(
+      WindowsHandle(mData.dxgiHandle), /* gpuProcessTextureId */ Nothing(),
+      /* arrayIndex */ 0, format, mDesc.size, mDesc.colorSpace,
+      gfx::ColorRange::FULL));
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// Factory
+
+/*static*/
+UniquePtr<SurfaceFactory_D3D11Interop> SurfaceFactory_D3D11Interop::Create(
+    GLContext& gl) {
+  WGLLibrary* wgl = &sWGLLib;
+  if (!wgl || !wgl->HasDXInterop2()) return nullptr;
+
+  if (XRE_IsContentProcess()) {
+    gfxPlatform::GetPlatform()->EnsureDevicesInitialized();
+  }
+
+  const RefPtr<DXInterop2Device> interop = DXInterop2Device::Open(wgl, &gl);
+  if (!interop) {
+    NS_WARNING("Failed to open D3D device for use by WGL.");
+    return nullptr;
+  }
+
+  return AsUnique(new SurfaceFactory_D3D11Interop(
+      {&gl, SharedSurfaceType::DXGLInterop2, layers::TextureType::D3D11, true},
+      interop));
+}
+
+SurfaceFactory_D3D11Interop::SurfaceFactory_D3D11Interop(
+    const PartialSharedSurfaceDesc& desc, DXInterop2Device* interop)
+    : SurfaceFactory(desc), mInterop(interop) {}
+
+SurfaceFactory_D3D11Interop::~SurfaceFactory_D3D11Interop() = default;
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/SharedSurfaceD3D11Interop.h b/gfx/gl/SharedSurfaceD3D11Interop.h
new file mode 100644
index 0000000000..5295c23f00
--- /dev/null
+++ b/gfx/gl/SharedSurfaceD3D11Interop.h
@@ -0,0 +1,79 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_SURFACE_D3D11_INTEROP_H_
+#define SHARED_SURFACE_D3D11_INTEROP_H_
+
+#include <d3d11.h>
+#include <windows.h>
+#include "SharedSurface.h"
+
+namespace mozilla {
+namespace gl {
+
+class DXInterop2Device;
+class GLContext;
+class WGLLibrary;
+
+class SharedSurface_D3D11Interop final : public SharedSurface {
+ public:
+  struct Data final {
+    const RefPtr<DXInterop2Device> interop;
+    HANDLE lockHandle;
+    RefPtr<ID3D11Texture2D> texD3D;
+    HANDLE dxgiHandle;
+    UniquePtr<Renderbuffer> interopRb;
+    UniquePtr<MozFramebuffer> interopFbIfNeedsIndirect;
+  };
+  const Data mData;
+  const bool mNeedsFinish;
+
+ private:
+  bool mLockedForGL = false;
+
+ public:
+  static UniquePtr<SharedSurface_D3D11Interop> Create(const SharedSurfaceDesc&,
+                                                      DXInterop2Device*);
+
+ private:
+  SharedSurface_D3D11Interop(const SharedSurfaceDesc&,
+                             UniquePtr<MozFramebuffer>&& fbForDrawing, Data&&);
+
+ public:
+  virtual ~SharedSurface_D3D11Interop();
+
+  void LockProdImpl() override {}
+  void UnlockProdImpl() override {}
+
+  void ProducerAcquireImpl() override;
+  void ProducerReleaseImpl() override;
+
+  Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+};
+
+class SurfaceFactory_D3D11Interop : public SurfaceFactory {
+ public:
+  const RefPtr<DXInterop2Device> mInterop;
+
+  static UniquePtr<SurfaceFactory_D3D11Interop> Create(GLContext& gl);
+
+ protected:
+  SurfaceFactory_D3D11Interop(const PartialSharedSurfaceDesc&,
+                              DXInterop2Device* interop);
+
+ public:
+  virtual ~SurfaceFactory_D3D11Interop();
+
+ protected:
+  UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc& desc) override {
+    return SharedSurface_D3D11Interop::Create(desc, mInterop);
+  }
+};
+
+} /* namespace gl */
+} /* namespace mozilla */
+
+#endif /* SHARED_SURFACE_D3D11_INTEROP_H_ */
diff --git a/gfx/gl/SharedSurfaceDMABUF.cpp b/gfx/gl/SharedSurfaceDMABUF.cpp
new file mode 100644
index 0000000000..7c474b5f98
--- /dev/null
+++ b/gfx/gl/SharedSurfaceDMABUF.cpp
@@ -0,0 +1,141 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SharedSurfaceDMABUF.h"
+
+#include "gfxPlatform.h"
+#include "GLContextEGL.h"
+#include "MozFramebuffer.h"
+#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor, etc
+#include "mozilla/gfx/gfxVars.h"
+
+namespace mozilla::gl {
+
+static bool HasDmaBufExtensions(const GLContextEGL* gl) {
+  const auto& egl = *(gl->mEgl);
+  return egl.IsExtensionSupported(EGLExtension::EXT_image_dma_buf_import) &&
+         egl.IsExtensionSupported(
+             EGLExtension::EXT_image_dma_buf_import_modifiers) &&
+         egl.IsExtensionSupported(EGLExtension::MESA_image_dma_buf_export);
+}
+
+/*static*/
+UniquePtr<SharedSurface_DMABUF> SharedSurface_DMABUF::Create(
+    const SharedSurfaceDesc& desc) {
+  const auto& gle = GLContextEGL::Cast(desc.gl);
+  const auto& context = gle->mContext;
+  const auto& egl = *(gle->mEgl);
+
+  RefPtr<DMABufSurface> surface;
+  UniquePtr<MozFramebuffer> fb;
+
+  if (!HasDmaBufExtensions(gle) || !gfx::gfxVars::UseDMABufSurfaceExport()) {
+    // Using MESA_image_dma_buf_export is not supported or it's broken.
+    // Create dmabuf surface directly via GBM and create
+    // EGLImage/framebuffer over it.
+    const auto flags = static_cast<DMABufSurfaceFlags>(
+        DMABUF_TEXTURE | DMABUF_USE_MODIFIERS | DMABUF_ALPHA);
+    surface = DMABufSurfaceRGBA::CreateDMABufSurface(desc.size.width,
+                                                     desc.size.height, flags);
+    if (!surface || !surface->CreateTexture(desc.gl)) {
+      return nullptr;
+    }
+    const auto tex = surface->GetTexture();
+    fb = MozFramebuffer::CreateForBacking(desc.gl, desc.size, 0, false,
+                                          LOCAL_GL_TEXTURE_2D, tex);
+    if (!fb) return nullptr;
+  } else {
+    // Use MESA_image_dma_buf_export to create EGLImage/framebuffer directly
+    // and derive dmabuf from it.
+    fb = MozFramebuffer::Create(desc.gl, desc.size, 0, false);
+    if (!fb) return nullptr;
+
+    const auto buffer = reinterpret_cast<EGLClientBuffer>(fb->ColorTex());
+    const auto image =
+        egl.fCreateImage(context, LOCAL_EGL_GL_TEXTURE_2D, buffer, nullptr);
+    if (!image) return nullptr;
+
+    surface = DMABufSurfaceRGBA::CreateDMABufSurface(
+        desc.gl, image, desc.size.width, desc.size.height);
+    if (!surface) return nullptr;
+  }
+  return AsUnique(new SharedSurface_DMABUF(desc, std::move(fb), surface));
+}
+
+SharedSurface_DMABUF::SharedSurface_DMABUF(const SharedSurfaceDesc& desc,
+                                           UniquePtr<MozFramebuffer> fb,
+                                           const RefPtr<DMABufSurface> surface)
+    : SharedSurface(desc, std::move(fb)), mSurface(surface) {}
+
+SharedSurface_DMABUF::~SharedSurface_DMABUF() {
+  const auto& gl = mDesc.gl;
+  if (!gl || !gl->MakeCurrent()) {
+    return;
+  }
+  mSurface->ReleaseTextures();
+}
+
+void SharedSurface_DMABUF::ProducerReleaseImpl() { mSurface->FenceSet(); }
+
+void SharedSurface_DMABUF::WaitForBufferOwnership() { mSurface->FenceWait(); }
+
+Maybe<layers::SurfaceDescriptor> SharedSurface_DMABUF::ToSurfaceDescriptor() {
+  layers::SurfaceDescriptor desc;
+  if (!mSurface->Serialize(desc)) return {};
+  return Some(desc);
+}
+
+/*static*/
+UniquePtr<SurfaceFactory_DMABUF> SurfaceFactory_DMABUF::Create(GLContext& gl) {
+  if (!widget::DMABufDevice::IsDMABufWebGLEnabled()) {
+    return nullptr;
+  }
+
+  auto dmabufFactory = MakeUnique<SurfaceFactory_DMABUF>(gl);
+  if (dmabufFactory->CanCreateSurface(gl)) {
+    return dmabufFactory;
+  }
+
+  LOGDMABUF(
+      ("SurfaceFactory_DMABUF::Create() failed, fallback to SW buffers.\n"));
+  widget::DMABufDevice::DisableDMABufWebGL();
+  return nullptr;
+}
+
+bool SurfaceFactory_DMABUF::CanCreateSurface(GLContext& gl) {
+  UniquePtr<SharedSurface> test =
+      CreateShared(gfx::IntSize(1, 1), gfx::ColorSpace2::SRGB);
+  if (!test) {
+    LOGDMABUF((
+        "SurfaceFactory_DMABUF::CanCreateSurface() failed to create surface."));
+    return false;
+  }
+  auto desc = test->ToSurfaceDescriptor();
+  if (!desc) {
+    LOGDMABUF(
+        ("SurfaceFactory_DMABUF::CanCreateSurface() failed to serialize "
+         "surface."));
+    return false;
+  }
+  RefPtr<DMABufSurface> importedSurface =
+      DMABufSurface::CreateDMABufSurface(*desc);
+  if (!importedSurface) {
+    LOGDMABUF((
+        "SurfaceFactory_DMABUF::CanCreateSurface() failed to import surface."));
+    return false;
+  }
+  if (!importedSurface->CreateTexture(&gl)) {
+    LOGDMABUF(
+        ("SurfaceFactory_DMABUF::CanCreateSurface() failed to create texture "
+         "over surface."));
+    return false;
+  }
+  return true;
+}
+
+SurfaceFactory_DMABUF::SurfaceFactory_DMABUF(GLContext& gl)
+    : SurfaceFactory({&gl, SharedSurfaceType::EGLSurfaceDMABUF,
+                      layers::TextureType::DMABUF, true}) {}
+}  // namespace mozilla::gl
diff --git a/gfx/gl/SharedSurfaceDMABUF.h b/gfx/gl/SharedSurfaceDMABUF.h
new file mode 100644
index 0000000000..6aaa4d333e
--- /dev/null
+++ b/gfx/gl/SharedSurfaceDMABUF.h
@@ -0,0 +1,69 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_SURFACE_DMABUF_H_
+#define SHARED_SURFACE_DMABUF_H_
+
+#include "SharedSurface.h"
+#include "mozilla/widget/DMABufSurface.h"
+
+namespace mozilla {
+namespace gl {
+
+class GLContext;
+class GLLibraryEGL;
+
+class SharedSurface_DMABUF final : public SharedSurface {
+ public:
+  const RefPtr<DMABufSurface> mSurface;
+
+  static UniquePtr<SharedSurface_DMABUF> Create(const SharedSurfaceDesc&);
+
+ private:
+  SharedSurface_DMABUF(const SharedSurfaceDesc&, UniquePtr<MozFramebuffer>,
+                       RefPtr<DMABufSurface>);
+
+  void UpdateProdTexture(const MutexAutoLock& curAutoLock);
+
+ public:
+  virtual ~SharedSurface_DMABUF();
+
+  // Exclusive Content/WebGL lock/unlock of surface for write
+  virtual void LockProdImpl() override {}
+  virtual void UnlockProdImpl() override {}
+
+  // Non-exclusive Content/WebGL lock/unlock of surface for write
+  virtual void ProducerAcquireImpl() override {}
+  virtual void ProducerReleaseImpl() override;
+
+  // Non-exclusive Content/WebGL lock/unlock for read from surface
+  virtual void ProducerReadAcquireImpl() override {}
+  virtual void ProducerReadReleaseImpl() override {}
+
+  Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+
+  void WaitForBufferOwnership() override;
+};
+
+class SurfaceFactory_DMABUF : public SurfaceFactory {
+ public:
+  static UniquePtr<SurfaceFactory_DMABUF> Create(GLContext& gl);
+
+  explicit SurfaceFactory_DMABUF(GLContext&);
+
+ public:
+  virtual UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc& desc) override {
+    return SharedSurface_DMABUF::Create(desc);
+  }
+
+  bool CanCreateSurface(GLContext& gl);
+};
+
+}  // namespace gl
+
+}  // namespace mozilla
+
+#endif /* SHARED_SURFACE_DMABUF_H_ */
diff --git a/gfx/gl/SharedSurfaceEGL.cpp b/gfx/gl/SharedSurfaceEGL.cpp
new file mode 100644
index 0000000000..09659ba519
--- /dev/null
+++ b/gfx/gl/SharedSurfaceEGL.cpp
@@ -0,0 +1,268 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SharedSurfaceEGL.h"
+
+#include "GLBlitHelper.h"
+#include "GLContextEGL.h"
+#include "GLContextProvider.h"
+#include "GLLibraryEGL.h"
+#include "GLReadTexImageHelper.h"
+#include "MozFramebuffer.h"
+#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor, etc
+#include "SharedSurface.h"
+
+#if defined(MOZ_WIDGET_ANDROID)
+#  include "AndroidNativeWindow.h"
+#  include "mozilla/java/SurfaceAllocatorWrappers.h"
+#  include "mozilla/java/GeckoSurfaceTextureWrappers.h"
+#endif  // defined(MOZ_WIDGET_ANDROID)
+
+namespace mozilla {
+namespace gl {
+
+static bool HasEglImageExtensions(const GLContextEGL& gl) {
+  const auto& egl = *(gl.mEgl);
+  return egl.HasKHRImageBase() &&
+         egl.IsExtensionSupported(EGLExtension::KHR_gl_texture_2D_image) &&
+         (gl.IsExtensionSupported(GLContext::OES_EGL_image_external) ||
+          gl.IsExtensionSupported(GLContext::OES_EGL_image));
+}
+
+/*static*/
+UniquePtr<SurfaceFactory_EGLImage> SurfaceFactory_EGLImage::Create(
+    GLContext& gl_) {
+  auto& gl = *GLContextEGL::Cast(&gl_);
+  if (!HasEglImageExtensions(gl)) return nullptr;
+
+  const auto partialDesc = PartialSharedSurfaceDesc{
+      &gl, SharedSurfaceType::EGLImageShare, layers::TextureType::EGLImage,
+      false,  // Can't recycle, as mSync changes never update TextureHost.
+  };
+  return AsUnique(new SurfaceFactory_EGLImage(partialDesc));
+}
+
+// -
+
+/*static*/
+UniquePtr<SharedSurface_EGLImage> SharedSurface_EGLImage::Create(
+    const SharedSurfaceDesc& desc) {
+  const auto& gle = GLContextEGL::Cast(desc.gl);
+  const auto& context = gle->mContext;
+  const auto& egl = *(gle->mEgl);
+
+  auto fb = MozFramebuffer::Create(desc.gl, desc.size, 0, false);
+  if (!fb) return nullptr;
+
+  const auto buffer = reinterpret_cast<EGLClientBuffer>(fb->ColorTex());
+  const auto image =
+      egl.fCreateImage(context, LOCAL_EGL_GL_TEXTURE_2D, buffer, nullptr);
+  if (!image) return nullptr;
+
+  return AsUnique(new SharedSurface_EGLImage(desc, std::move(fb), image));
+}
+
+SharedSurface_EGLImage::SharedSurface_EGLImage(const SharedSurfaceDesc& desc,
+                                               UniquePtr<MozFramebuffer>&& fb,
+                                               const EGLImage image)
+    : SharedSurface(desc, std::move(fb)),
+      mMutex("SharedSurface_EGLImage mutex"),
+      mImage(image) {}
+
+SharedSurface_EGLImage::~SharedSurface_EGLImage() {
+  const auto& gle = GLContextEGL::Cast(mDesc.gl);
+  const auto& egl = gle->mEgl;
+  egl->fDestroyImage(mImage);
+
+  if (mSync) {
+    // We can't call this unless we have the ext, but we will always have
+    // the ext if we have something to destroy.
+    egl->fDestroySync(mSync);
+    mSync = 0;
+  }
+}
+
+void SharedSurface_EGLImage::ProducerReleaseImpl() {
+  const auto& gl = GLContextEGL::Cast(mDesc.gl);
+  const auto& egl = gl->mEgl;
+
+  MutexAutoLock lock(mMutex);
+  gl->MakeCurrent();
+
+  if (egl->IsExtensionSupported(EGLExtension::KHR_fence_sync) &&
+      gl->IsExtensionSupported(GLContext::OES_EGL_sync)) {
+    if (mSync) {
+      MOZ_RELEASE_ASSERT(false, "GFX: Non-recycleable should not Fence twice.");
+      MOZ_ALWAYS_TRUE(egl->fDestroySync(mSync));
+      mSync = 0;
+    }
+
+    mSync = egl->fCreateSync(LOCAL_EGL_SYNC_FENCE, nullptr);
+    if (mSync) {
+      gl->fFlush();
+      return;
+    }
+  }
+
+  MOZ_ASSERT(!mSync);
+  gl->fFinish();
+}
+
+void SharedSurface_EGLImage::ProducerReadAcquireImpl() {
+  const auto& gle = GLContextEGL::Cast(mDesc.gl);
+  const auto& egl = gle->mEgl;
+  // Wait on the fence, because presumably we're going to want to read this
+  // surface
+  if (mSync) {
+    egl->fClientWaitSync(mSync, 0, LOCAL_EGL_FOREVER);
+  }
+}
+
+Maybe<layers::SurfaceDescriptor> SharedSurface_EGLImage::ToSurfaceDescriptor() {
+  return Some(layers::EGLImageDescriptor((uintptr_t)mImage, (uintptr_t)mSync,
+                                         mDesc.size, true));
+}
+
+////////////////////////////////////////////////////////////////////////
+
+#ifdef MOZ_WIDGET_ANDROID
+
+/*static*/
+UniquePtr<SharedSurface_SurfaceTexture> SharedSurface_SurfaceTexture::Create(
+    const SharedSurfaceDesc& desc) {
+  const auto& size = desc.size;
+
+  jni::Object::LocalRef surfaceObj;
+  const bool useSingleBuffer =
+      desc.gl->Renderer() != GLRenderer::AndroidEmulator;
+
+  if (useSingleBuffer) {
+    surfaceObj =
+        java::SurfaceAllocator::AcquireSurface(size.width, size.height, true);
+  }
+
+  if (!surfaceObj) {
+    // Try multi-buffer mode
+    surfaceObj =
+        java::SurfaceAllocator::AcquireSurface(size.width, size.height, false);
+  }
+
+  if (!surfaceObj) {
+    // Give up
+    NS_WARNING("Failed to allocate SurfaceTexture!");
+    return nullptr;
+  }
+  const auto surface = java::GeckoSurface::Ref::From(surfaceObj);
+
+  AndroidNativeWindow window(surface);
+  const auto& gle = GLContextEGL::Cast(desc.gl);
+  MOZ_ASSERT(gle);
+  const auto eglSurface = gle->CreateCompatibleSurface(window.NativeWindow());
+  if (!eglSurface) return nullptr;
+
+  return AsUnique(new SharedSurface_SurfaceTexture(desc, surface, eglSurface));
+}
+
+SharedSurface_SurfaceTexture::SharedSurface_SurfaceTexture(
+    const SharedSurfaceDesc& desc, java::GeckoSurface::Param surface,
+    const EGLSurface eglSurface)
+    : SharedSurface(desc, nullptr),
+      mSurface(surface),
+      mEglSurface(eglSurface),
+      mEglDisplay(GLContextEGL::Cast(desc.gl)->mEgl) {}
+
+SharedSurface_SurfaceTexture::~SharedSurface_SurfaceTexture() {
+  if (mOrigEglSurface) {
+    // We are about to destroy mEglSurface.
+    // Make sure gl->SetEGLSurfaceOverride() doesn't keep a reference
+    // to the surface.
+    UnlockProd();
+  }
+
+  std::shared_ptr<EglDisplay> display = mEglDisplay.lock();
+  if (display) {
+    display->fDestroySurface(mEglSurface);
+  }
+  java::SurfaceAllocator::DisposeSurface(mSurface);
+}
+
+void SharedSurface_SurfaceTexture::LockProdImpl() {
+  MOZ_RELEASE_ASSERT(mSurface->GetAvailable());
+
+  GLContextEGL* gl = GLContextEGL::Cast(mDesc.gl);
+  mOrigEglSurface = gl->GetEGLSurfaceOverride();
+  gl->SetEGLSurfaceOverride(mEglSurface);
+}
+
+void SharedSurface_SurfaceTexture::UnlockProdImpl() {
+  MOZ_RELEASE_ASSERT(mSurface->GetAvailable());
+
+  GLContextEGL* gl = GLContextEGL::Cast(mDesc.gl);
+  MOZ_ASSERT(gl->GetEGLSurfaceOverride() == mEglSurface);
+
+  gl->SetEGLSurfaceOverride(mOrigEglSurface);
+  mOrigEglSurface = nullptr;
+}
+
+void SharedSurface_SurfaceTexture::ProducerReadReleaseImpl() {
+  // This GeckoSurfaceTexture is not SurfaceTexture of this class's GeckoSurface
+  // when current process is content process. In this case, SurfaceTexture of
+  // this class's GeckoSurface does not exist in this process. It exists in
+  // compositor's process. Then GeckoSurfaceTexture in this process is a sync
+  // surface that copies back the SurfaceTextrure from compositor's process. It
+  // was added by Bug 1486659. Then SurfaceTexture::UpdateTexImage() becomes
+  // very heavy weight, since it does copy back the SurfaceTextrure from
+  // compositor's process.
+  java::GeckoSurfaceTexture::LocalRef surfaceTexture =
+      java::GeckoSurfaceTexture::Lookup(mSurface->GetHandle());
+  if (!surfaceTexture) {
+    NS_ERROR("Didn't find GeckoSurfaceTexture in ProducerReadReleaseImpl");
+    return;
+  }
+  surfaceTexture->UpdateTexImage();
+  // Non single buffer mode Surface does not need ReleaseTexImage() call.
+  // When SurfaceTexture is sync Surface, it might not be single buffer mode.
+  if (surfaceTexture->IsSingleBuffer()) {
+    surfaceTexture->ReleaseTexImage();
+  }
+}
+
+void SharedSurface_SurfaceTexture::Commit() {
+  MOZ_RELEASE_ASSERT(mSurface->GetAvailable());
+
+  LockProdImpl();
+  mDesc.gl->SwapBuffers();
+  UnlockProdImpl();
+  mSurface->SetAvailable(false);
+}
+
+void SharedSurface_SurfaceTexture::WaitForBufferOwnership() {
+  mSurface->SetAvailable(true);
+}
+
+bool SharedSurface_SurfaceTexture::IsBufferAvailable() const {
+  return mSurface->GetAvailable();
+}
+
+bool SharedSurface_SurfaceTexture::IsValid() const {
+  return !mSurface->IsReleased();
+}
+
+Maybe<layers::SurfaceDescriptor>
+SharedSurface_SurfaceTexture::ToSurfaceDescriptor() {
+  return Some(layers::SurfaceTextureDescriptor(
+      mSurface->GetHandle(), mDesc.size, gfx::SurfaceFormat::R8G8B8A8,
+      false /* NOT continuous */, Nothing() /* Do not override transform */));
+}
+
+SurfaceFactory_SurfaceTexture::SurfaceFactory_SurfaceTexture(GLContext& gl)
+    : SurfaceFactory({&gl, SharedSurfaceType::AndroidSurfaceTexture,
+                      layers::TextureType::AndroidNativeWindow, true}) {}
+
+#endif  // MOZ_WIDGET_ANDROID
+
+}  // namespace gl
+
+} /* namespace mozilla */
diff --git a/gfx/gl/SharedSurfaceEGL.h b/gfx/gl/SharedSurfaceEGL.h
new file mode 100644
index 0000000000..569421f945
--- /dev/null
+++ b/gfx/gl/SharedSurfaceEGL.h
@@ -0,0 +1,130 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_SURFACE_EGL_H_
+#define SHARED_SURFACE_EGL_H_
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Mutex.h"
+#include "CompositorTypes.h"
+#include "SharedSurface.h"
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "AndroidNativeWindow.h"
+#  include "GLLibraryEGL.h"
+#endif
+
+namespace mozilla {
+namespace gl {
+
+class GLLibraryEGL;
+
+// -
+// EGLImage
+
+class SharedSurface_EGLImage final : public SharedSurface {
+  mutable Mutex mMutex MOZ_UNANNOTATED;
+  EGLSync mSync = 0;
+
+ public:
+  const EGLImage mImage;
+
+  static UniquePtr<SharedSurface_EGLImage> Create(const SharedSurfaceDesc&);
+
+ protected:
+  SharedSurface_EGLImage(const SharedSurfaceDesc&,
+                         UniquePtr<MozFramebuffer>&& fb, EGLImage);
+
+  void UpdateProdTexture(const MutexAutoLock& curAutoLock);
+
+ public:
+  virtual ~SharedSurface_EGLImage();
+
+  virtual void LockProdImpl() override {}
+  virtual void UnlockProdImpl() override {}
+
+  virtual void ProducerAcquireImpl() override {}
+  virtual void ProducerReleaseImpl() override;
+
+  virtual void ProducerReadAcquireImpl() override;
+  virtual void ProducerReadReleaseImpl() override{};
+
+  Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+};
+
+class SurfaceFactory_EGLImage final : public SurfaceFactory {
+ public:
+  static UniquePtr<SurfaceFactory_EGLImage> Create(GLContext&);
+
+ private:
+  explicit SurfaceFactory_EGLImage(const PartialSharedSurfaceDesc& desc)
+      : SurfaceFactory(desc) {}
+
+ public:
+  virtual UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc& desc) override {
+    return SharedSurface_EGLImage::Create(desc);
+  }
+};
+
+// -
+// SurfaceTexture
+
+#ifdef MOZ_WIDGET_ANDROID
+
+class SharedSurface_SurfaceTexture final : public SharedSurface {
+  const java::GeckoSurface::GlobalRef mSurface;
+  const EGLSurface mEglSurface;
+  const std::weak_ptr<EglDisplay> mEglDisplay;
+  EGLSurface mOrigEglSurface = 0;
+
+ public:
+  static UniquePtr<SharedSurface_SurfaceTexture> Create(
+      const SharedSurfaceDesc&);
+
+  java::GeckoSurface::Param JavaSurface() { return mSurface; }
+
+ protected:
+  SharedSurface_SurfaceTexture(const SharedSurfaceDesc&,
+                               java::GeckoSurface::Param surface, EGLSurface);
+
+ public:
+  virtual ~SharedSurface_SurfaceTexture();
+
+  virtual void LockProdImpl() override;
+  virtual void UnlockProdImpl() override;
+
+  virtual void ProducerAcquireImpl() override {}
+  virtual void ProducerReleaseImpl() override {}
+  virtual void ProducerReadReleaseImpl() override;
+
+  Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+
+  virtual void Commit() override;
+
+  virtual void WaitForBufferOwnership() override;
+
+  virtual bool IsBufferAvailable() const override;
+
+  bool IsValid() const override;
+};
+
+class SurfaceFactory_SurfaceTexture final : public SurfaceFactory {
+ public:
+  explicit SurfaceFactory_SurfaceTexture(GLContext&);
+
+  virtual UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc& desc) override {
+    return SharedSurface_SurfaceTexture::Create(desc);
+  }
+};
+
+#endif  // MOZ_WIDGET_ANDROID
+
+}  // namespace gl
+
+} /* namespace mozilla */
+
+#endif /* SHARED_SURFACE_EGL_H_ */
diff --git a/gfx/gl/SharedSurfaceGL.cpp b/gfx/gl/SharedSurfaceGL.cpp
new file mode 100644
index 0000000000..5b33088e2e
--- /dev/null
+++ b/gfx/gl/SharedSurfaceGL.cpp
@@ -0,0 +1,42 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SharedSurfaceGL.h"
+
+#include "GLBlitHelper.h"
+#include "GLContext.h"
+#include "GLReadTexImageHelper.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/layers/TextureForwarder.h"
+#include "ScopedGLHelpers.h"
+
+namespace mozilla {
+namespace gl {
+
+/*static*/
+UniquePtr<SharedSurface_Basic> SharedSurface_Basic::Create(
+    const SharedSurfaceDesc& desc) {
+  auto fb = MozFramebuffer::Create(desc.gl, desc.size, 0, false);
+  if (!fb) return nullptr;
+
+  return AsUnique(new SharedSurface_Basic(desc, std::move(fb)));
+}
+
+SharedSurface_Basic::SharedSurface_Basic(const SharedSurfaceDesc& desc,
+                                         UniquePtr<MozFramebuffer>&& fb)
+    : SharedSurface(desc, std::move(fb)) {}
+
+Maybe<layers::SurfaceDescriptor> SharedSurface_Basic::ToSurfaceDescriptor() {
+  return Nothing();
+}
+
+////////////////////////////////////////////////////////////////////////
+
+SurfaceFactory_Basic::SurfaceFactory_Basic(GLContext& gl)
+    : SurfaceFactory({&gl, SharedSurfaceType::Basic,
+                      layers::TextureType::Unknown, true}) {}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/SharedSurfaceGL.h b/gfx/gl/SharedSurfaceGL.h
new file mode 100644
index 0000000000..fef3d59fb0
--- /dev/null
+++ b/gfx/gl/SharedSurfaceGL.h
@@ -0,0 +1,42 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_SURFACE_GL_H_
+#define SHARED_SURFACE_GL_H_
+
+#include "SharedSurface.h"
+
+namespace mozilla {
+namespace gl {
+
+class MozFramebuffer;
+
+// For readback and bootstrapping:
+class SharedSurface_Basic final : public SharedSurface {
+ public:
+  static UniquePtr<SharedSurface_Basic> Create(const SharedSurfaceDesc&);
+
+ private:
+  SharedSurface_Basic(const SharedSurfaceDesc& desc,
+                      UniquePtr<MozFramebuffer>&& fb);
+
+ public:
+  Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+};
+
+class SurfaceFactory_Basic final : public SurfaceFactory {
+ public:
+  explicit SurfaceFactory_Basic(GLContext& gl);
+
+  virtual UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc& desc) override {
+    return SharedSurface_Basic::Create(desc);
+  }
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // SHARED_SURFACE_GL_H_
diff --git a/gfx/gl/SharedSurfaceIO.cpp b/gfx/gl/SharedSurfaceIO.cpp
new file mode 100644
index 0000000000..1fd0f22d31
--- /dev/null
+++ b/gfx/gl/SharedSurfaceIO.cpp
@@ -0,0 +1,103 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SharedSurfaceIO.h"
+
+#include "GLContextCGL.h"
+#include "MozFramebuffer.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/gfx/MacIOSurface.h"
+#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor, etc
+#include "mozilla/layers/LayersTypes.h"
+#include "ScopedGLHelpers.h"
+
+namespace mozilla {
+namespace gl {
+
+// -
+// Factory
+
+SurfaceFactory_IOSurface::SurfaceFactory_IOSurface(GLContext& gl)
+    : SurfaceFactory({&gl, SharedSurfaceType::IOSurface,
+                      layers::TextureType::MacIOSurface, true}),
+      mMaxDims(gfx::IntSize::Truncate(MacIOSurface::GetMaxWidth(),
+                                      MacIOSurface::GetMaxHeight())) {}
+
+// -
+// Surface
+
+static void BackTextureWithIOSurf(GLContext* const gl, const GLuint tex,
+                                  MacIOSurface* const ioSurf) {
+  MOZ_ASSERT(gl->IsCurrent());
+
+  ScopedBindTexture texture(gl, tex, LOCAL_GL_TEXTURE_RECTANGLE_ARB);
+
+  gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
+                     LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR);
+  gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
+                     LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR);
+  gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_S,
+                     LOCAL_GL_CLAMP_TO_EDGE);
+  gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_T,
+                     LOCAL_GL_CLAMP_TO_EDGE);
+
+  CGLContextObj cgl = GLContextCGL::Cast(gl)->GetCGLContext();
+  MOZ_ASSERT(cgl);
+
+  ioSurf->CGLTexImageIOSurface2D(gl, cgl, 0);
+}
+
+/*static*/
+UniquePtr<SharedSurface_IOSurface> SharedSurface_IOSurface::Create(
+    const SharedSurfaceDesc& desc) {
+  const auto& size = desc.size;
+  const RefPtr<MacIOSurface> ioSurf =
+      MacIOSurface::CreateIOSurface(size.width, size.height, true);
+  if (!ioSurf) {
+    NS_WARNING("Failed to create MacIOSurface.");
+    return nullptr;
+  }
+
+  ioSurf->SetColorSpace(desc.colorSpace);
+
+  // -
+
+  auto tex = MakeUnique<Texture>(*desc.gl);
+  BackTextureWithIOSurf(desc.gl, tex->name, ioSurf);
+
+  const GLenum target = LOCAL_GL_TEXTURE_RECTANGLE;
+  auto fb = MozFramebuffer::CreateForBacking(desc.gl, desc.size, 0, false,
+                                             target, tex->name);
+  if (!fb) return nullptr;
+
+  return AsUnique(
+      new SharedSurface_IOSurface(desc, std::move(fb), std::move(tex), ioSurf));
+}
+
+SharedSurface_IOSurface::SharedSurface_IOSurface(
+    const SharedSurfaceDesc& desc, UniquePtr<MozFramebuffer> fb,
+    UniquePtr<Texture> tex, const RefPtr<MacIOSurface>& ioSurf)
+    : SharedSurface(desc, std::move(fb)),
+      mTex(std::move(tex)),
+      mIOSurf(ioSurf) {}
+
+SharedSurface_IOSurface::~SharedSurface_IOSurface() = default;
+
+void SharedSurface_IOSurface::ProducerReleaseImpl() {
+  const auto& gl = mDesc.gl;
+  if (!gl) return;
+  gl->MakeCurrent();
+  gl->fFlush();
+}
+
+Maybe<layers::SurfaceDescriptor>
+SharedSurface_IOSurface::ToSurfaceDescriptor() {
+  const bool isOpaque = false;  // RGBA
+  return Some(layers::SurfaceDescriptorMacIOSurface(
+      mIOSurf->GetIOSurfaceID(), isOpaque, mIOSurf->GetYUVColorSpace()));
+}
+
+}  // namespace gl
+}  // namespace mozilla
diff --git a/gfx/gl/SharedSurfaceIO.h b/gfx/gl/SharedSurfaceIO.h
new file mode 100644
index 0000000000..938173b982
--- /dev/null
+++ b/gfx/gl/SharedSurfaceIO.h
@@ -0,0 +1,64 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_SURFACEIO_H_
+#define SHARED_SURFACEIO_H_
+
+#include "mozilla/RefPtr.h"
+#include "SharedSurface.h"
+
+class MacIOSurface;
+
+namespace mozilla {
+namespace gl {
+
+class Texture;
+
+class SharedSurface_IOSurface final : public SharedSurface {
+ public:
+  const UniquePtr<Texture> mTex;
+  const RefPtr<MacIOSurface> mIOSurf;
+
+  static UniquePtr<SharedSurface_IOSurface> Create(const SharedSurfaceDesc&);
+
+ private:
+  SharedSurface_IOSurface(const SharedSurfaceDesc&, UniquePtr<MozFramebuffer>,
+                          UniquePtr<Texture>, const RefPtr<MacIOSurface>&);
+
+ public:
+  ~SharedSurface_IOSurface();
+
+  virtual void LockProdImpl() override {}
+  virtual void UnlockProdImpl() override {}
+
+  virtual void ProducerAcquireImpl() override {}
+  virtual void ProducerReleaseImpl() override;
+
+  virtual bool NeedsIndirectReads() const override { return true; }
+
+  Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+};
+
+class SurfaceFactory_IOSurface : public SurfaceFactory {
+ public:
+  const gfx::IntSize mMaxDims;
+
+  explicit SurfaceFactory_IOSurface(GLContext& gl);
+
+  virtual UniquePtr<SharedSurface> CreateSharedImpl(
+      const SharedSurfaceDesc& desc) override {
+    if (desc.size.width > mMaxDims.width ||
+        desc.size.height > mMaxDims.height) {
+      return nullptr;
+    }
+    return SharedSurface_IOSurface::Create(desc);
+  }
+};
+
+}  // namespace gl
+
+} /* namespace mozilla */
+
+#endif /* SHARED_SURFACEIO_H_ */
diff --git a/gfx/gl/SurfaceTypes.h b/gfx/gl/SurfaceTypes.h
new file mode 100644
index 0000000000..5967b6f7b4
--- /dev/null
+++ b/gfx/gl/SurfaceTypes.h
@@ -0,0 +1,35 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SURFACE_TYPES_H_
+#define SURFACE_TYPES_H_
+
+#include <cstdint>
+
+namespace mozilla {
+namespace layers {
+class LayersIPCChannel;
+}  // namespace layers
+
+namespace gl {
+
+enum class SharedSurfaceType : uint8_t {
+  Basic,
+  EGLImageShare,
+  EGLSurfaceANGLE,
+  DXGLInterop,
+  DXGLInterop2,
+  IOSurface,
+  GLXDrawable,
+  SharedGLTexture,
+  AndroidSurfaceTexture,
+  AndroidHardwareBuffer,
+  EGLSurfaceDMABUF,
+};
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // SURFACE_TYPES_H_
diff --git a/gfx/gl/WGLLibrary.h b/gfx/gl/WGLLibrary.h
new file mode 100644
index 0000000000..82c764b3db
--- /dev/null
+++ b/gfx/gl/WGLLibrary.h
@@ -0,0 +1,114 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GLContextTypes.h"
+#include "GLLibraryLoader.h"
+#include "mozilla/UniquePtr.h"
+#include <windows.h>
+
+struct PRLibrary;
+
+namespace mozilla {
+namespace gl {
+/*
+struct ScopedDC
+{
+    const HDC mDC;
+
+    ScopedDC() = delete;
+    virtual ~ScopedDC() = 0;
+};
+
+struct WindowDC final : public ScopedDC
+{
+    const HWND mWindow;
+
+    WindowDC() = delete;
+    ~WindowDC();
+};
+
+struct PBufferDC final : public ScopedDC
+{
+    const HWND mWindow;
+
+    PBufferDC() = delete;
+    ~PBufferDC();
+};
+*/
+class WGLLibrary {
+ public:
+  ~WGLLibrary() { Reset(); }
+
+ private:
+  void Reset();
+
+ public:
+  struct {
+    HGLRC(GLAPIENTRY* fCreateContext)(HDC);
+    BOOL(GLAPIENTRY* fDeleteContext)(HGLRC);
+    BOOL(GLAPIENTRY* fMakeCurrent)(HDC, HGLRC);
+    PROC(GLAPIENTRY* fGetProcAddress)(LPCSTR);
+    HGLRC(GLAPIENTRY* fGetCurrentContext)(void);
+    HDC(GLAPIENTRY* fGetCurrentDC)(void);
+    // BOOL   (GLAPIENTRY * fShareLists) (HGLRC oldContext, HGLRC newContext);
+    HANDLE(GLAPIENTRY* fCreatePbuffer)
+    (HDC hDC, int iPixelFormat, int iWidth, int iHeight,
+     const int* piAttribList);
+    BOOL(GLAPIENTRY* fDestroyPbuffer)(HANDLE hPbuffer);
+    HDC(GLAPIENTRY* fGetPbufferDC)(HANDLE hPbuffer);
+    int(GLAPIENTRY* fReleasePbufferDC)(HANDLE hPbuffer, HDC dc);
+    // BOOL (GLAPIENTRY * fBindTexImage) (HANDLE hPbuffer, int iBuffer);
+    // BOOL (GLAPIENTRY * fReleaseTexImage) (HANDLE hPbuffer, int iBuffer);
+    BOOL(GLAPIENTRY* fChoosePixelFormat)
+    (HDC hdc, const int* piAttribIList, const FLOAT* pfAttribFList,
+     UINT nMaxFormats, int* piFormats, UINT* nNumFormats);
+    // BOOL (GLAPIENTRY * fGetPixelFormatAttribiv) (HDC hdc,
+    //                                             int iPixelFormat,
+    //                                             int iLayerPlane,
+    //                                             UINT nAttributes,
+    //                                             int* piAttributes,
+    //                                             int* piValues);
+    const char*(GLAPIENTRY* fGetExtensionsStringARB)(HDC hdc);
+    HGLRC(GLAPIENTRY* fCreateContextAttribsARB)
+    (HDC hdc, HGLRC hShareContext, const int* attribList);
+    // WGL_NV_DX_interop:
+    BOOL(GLAPIENTRY* fDXSetResourceShareHandleNV)
+    (void* dxObject, HANDLE shareHandle);
+    HANDLE(GLAPIENTRY* fDXOpenDeviceNV)(void* dxDevice);
+    BOOL(GLAPIENTRY* fDXCloseDeviceNV)(HANDLE hDevice);
+    HANDLE(GLAPIENTRY* fDXRegisterObjectNV)
+    (HANDLE hDevice, void* dxObject, GLuint name, GLenum type, GLenum access);
+    BOOL(GLAPIENTRY* fDXUnregisterObjectNV)(HANDLE hDevice, HANDLE hObject);
+    BOOL(GLAPIENTRY* fDXObjectAccessNV)(HANDLE hObject, GLenum access);
+    BOOL(GLAPIENTRY* fDXLockObjectsNV)
+    (HANDLE hDevice, GLint count, HANDLE* hObjects);
+    BOOL(GLAPIENTRY* fDXUnlockObjectsNV)
+    (HANDLE hDevice, GLint count, HANDLE* hObjects);
+  } mSymbols = {};
+
+  bool EnsureInitialized();
+  // UniquePtr<WindowDC> CreateDummyWindow();
+  HGLRC CreateContextWithFallback(HDC dc, bool tryRobustBuffers) const;
+
+  bool HasDXInterop2() const { return bool(mSymbols.fDXOpenDeviceNV); }
+  bool IsInitialized() const { return mInitialized; }
+  auto GetOGLLibrary() const { return mOGLLibrary; }
+  auto RootDc() const { return mRootDc; }
+  SymbolLoader GetSymbolLoader() const;
+
+ private:
+  bool mInitialized = false;
+  PRLibrary* mOGLLibrary;
+  bool mHasRobustness;
+  HWND mDummyWindow;
+  HDC mRootDc;
+  HGLRC mDummyGlrc;
+};
+
+// a global WGLLibrary instance
+extern WGLLibrary sWGLLib;
+
+} /* namespace gl */
+} /* namespace mozilla */
diff --git a/gfx/gl/gtest/TestColorspaces.cpp b/gfx/gl/gtest/TestColorspaces.cpp
new file mode 100644
index 0000000000..c437e204af
--- /dev/null
+++ b/gfx/gl/gtest/TestColorspaces.cpp
@@ -0,0 +1,698 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include "Colorspaces.h"
+
+#include <array>
+#include <limits>
+
+namespace mozilla::color {
+mat4 YuvFromYcbcr(const YcbcrDesc&);
+float TfFromLinear(const PiecewiseGammaDesc&, float linear);
+float LinearFromTf(const PiecewiseGammaDesc&, float tf);
+mat3 XyzFromLinearRgb(const Chromaticities&);
+}  // namespace mozilla::color
+
+using namespace mozilla::color;
+
+auto Calc8From8(const ColorspaceTransform& ct, const ivec3 in8) {
+  const auto in = vec3(in8) / vec3(255);
+  const auto out = ct.DstFromSrc(in);
+  const auto out8 = ivec3(round(out * vec3(255)));
+  return out8;
+}
+
+auto Sample8From8(const Lut3& lut, const vec3 in8) {
+  const auto in = in8 / vec3(255);
+  const auto out = lut.Sample(in);
+  const auto out8 = ivec3(round(out * vec3(255)));
+  return out8;
+}
+
+TEST(Colorspaces, YcbcrDesc_Narrow8)
+{
+  const auto m = YuvFromYcbcr(YcbcrDesc::Narrow8());
+
+  const auto Yuv8 = [&](const ivec3 ycbcr8) {
+    const auto ycbcr = vec4(vec3(ycbcr8) / 255, 1);
+    const auto yuv = m * ycbcr;
+    return ivec3(round(yuv * 255));
+  };
+
+  EXPECT_EQ(Yuv8({{16, 128, 128}}), (ivec3{{0, 0, 0}}));
+  EXPECT_EQ(Yuv8({{17, 128, 128}}), (ivec3{{1, 0, 0}}));
+  // y = 0.5 => (16 + 235) / 2 = 125.5
+  EXPECT_EQ(Yuv8({{125, 128, 128}}), (ivec3{{127, 0, 0}}));
+  EXPECT_EQ(Yuv8({{126, 128, 128}}), (ivec3{{128, 0, 0}}));
+  EXPECT_EQ(Yuv8({{234, 128, 128}}), (ivec3{{254, 0, 0}}));
+  EXPECT_EQ(Yuv8({{235, 128, 128}}), (ivec3{{255, 0, 0}}));
+
+  // Check that we get the naive out-of-bounds behavior we'd expect:
+  EXPECT_EQ(Yuv8({{15, 128, 128}}), (ivec3{{-1, 0, 0}}));
+  EXPECT_EQ(Yuv8({{236, 128, 128}}), (ivec3{{256, 0, 0}}));
+}
+
+TEST(Colorspaces, YcbcrDesc_Full8)
+{
+  const auto m = YuvFromYcbcr(YcbcrDesc::Full8());
+
+  const auto Yuv8 = [&](const ivec3 ycbcr8) {
+    const auto ycbcr = vec4(vec3(ycbcr8) / 255, 1);
+    const auto yuv = m * ycbcr;
+    return ivec3(round(yuv * 255));
+  };
+
+  EXPECT_EQ(Yuv8({{0, 128, 128}}), (ivec3{{0, 0, 0}}));
+  EXPECT_EQ(Yuv8({{1, 128, 128}}), (ivec3{{1, 0, 0}}));
+  EXPECT_EQ(Yuv8({{127, 128, 128}}), (ivec3{{127, 0, 0}}));
+  EXPECT_EQ(Yuv8({{128, 128, 128}}), (ivec3{{128, 0, 0}}));
+  EXPECT_EQ(Yuv8({{254, 128, 128}}), (ivec3{{254, 0, 0}}));
+  EXPECT_EQ(Yuv8({{255, 128, 128}}), (ivec3{{255, 0, 0}}));
+}
+
+TEST(Colorspaces, YcbcrDesc_Float)
+{
+  const auto m = YuvFromYcbcr(YcbcrDesc::Float());
+
+  const auto Yuv8 = [&](const vec3 ycbcr8) {
+    const auto ycbcr = vec4(vec3(ycbcr8) / 255, 1);
+    const auto yuv = m * ycbcr;
+    return ivec3(round(yuv * 255));
+  };
+
+  EXPECT_EQ(Yuv8({{0, 0.5 * 255, 0.5 * 255}}), (ivec3{{0, 0, 0}}));
+  EXPECT_EQ(Yuv8({{1, 0.5 * 255, 0.5 * 255}}), (ivec3{{1, 0, 0}}));
+  EXPECT_EQ(Yuv8({{127, 0.5 * 255, 0.5 * 255}}), (ivec3{{127, 0, 0}}));
+  EXPECT_EQ(Yuv8({{128, 0.5 * 255, 0.5 * 255}}), (ivec3{{128, 0, 0}}));
+  EXPECT_EQ(Yuv8({{254, 0.5 * 255, 0.5 * 255}}), (ivec3{{254, 0, 0}}));
+  EXPECT_EQ(Yuv8({{255, 0.5 * 255, 0.5 * 255}}), (ivec3{{255, 0, 0}}));
+}
+
+TEST(Colorspaces, ColorspaceTransform_Rec709Narrow)
+{
+  const auto src = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {{YuvLumaCoeffs::Rec709(), YcbcrDesc::Narrow8()}},
+  };
+  const auto dst = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {},
+  };
+  const auto ct = ColorspaceTransform::Create(src, dst);
+
+  EXPECT_EQ(Calc8From8(ct, {{16, 128, 128}}), (ivec3{0}));
+  EXPECT_EQ(Calc8From8(ct, {{17, 128, 128}}), (ivec3{1}));
+  EXPECT_EQ(Calc8From8(ct, {{126, 128, 128}}), (ivec3{128}));
+  EXPECT_EQ(Calc8From8(ct, {{234, 128, 128}}), (ivec3{254}));
+  EXPECT_EQ(Calc8From8(ct, {{235, 128, 128}}), (ivec3{255}));
+
+  // Check that we get the naive out-of-bounds behavior we'd expect:
+  EXPECT_EQ(Calc8From8(ct, {{15, 128, 128}}), (ivec3{-1}));
+  EXPECT_EQ(Calc8From8(ct, {{236, 128, 128}}), (ivec3{256}));
+}
+
+TEST(Colorspaces, LutSample_Rec709Float)
+{
+  const auto src = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {{YuvLumaCoeffs::Rec709(), YcbcrDesc::Float()}},
+  };
+  const auto dst = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {},
+  };
+  const auto lut = ColorspaceTransform::Create(src, dst).ToLut3();
+
+  EXPECT_EQ(Sample8From8(lut, {{0, 0.5 * 255, 0.5 * 255}}), (ivec3{0}));
+  EXPECT_EQ(Sample8From8(lut, {{1, 0.5 * 255, 0.5 * 255}}), (ivec3{1}));
+  EXPECT_EQ(Sample8From8(lut, {{127, 0.5 * 255, 0.5 * 255}}), (ivec3{127}));
+  EXPECT_EQ(Sample8From8(lut, {{128, 0.5 * 255, 0.5 * 255}}), (ivec3{128}));
+  EXPECT_EQ(Sample8From8(lut, {{254, 0.5 * 255, 0.5 * 255}}), (ivec3{254}));
+  EXPECT_EQ(Sample8From8(lut, {{255, 0.5 * 255, 0.5 * 255}}), (ivec3{255}));
+}
+
+TEST(Colorspaces, LutSample_Rec709Narrow)
+{
+  const auto src = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {{YuvLumaCoeffs::Rec709(), YcbcrDesc::Narrow8()}},
+  };
+  const auto dst = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {},
+  };
+  const auto lut = ColorspaceTransform::Create(src, dst).ToLut3();
+
+  EXPECT_EQ(Sample8From8(lut, {{16, 128, 128}}), (ivec3{0}));
+  EXPECT_EQ(Sample8From8(lut, {{17, 128, 128}}), (ivec3{1}));
+  EXPECT_EQ(Sample8From8(lut, {{int((235 + 16) / 2), 128, 128}}), (ivec3{127}));
+  EXPECT_EQ(Sample8From8(lut, {{int((235 + 16) / 2) + 1, 128, 128}}),
+            (ivec3{128}));
+  EXPECT_EQ(Sample8From8(lut, {{234, 128, 128}}), (ivec3{254}));
+  EXPECT_EQ(Sample8From8(lut, {{235, 128, 128}}), (ivec3{255}));
+}
+
+TEST(Colorspaces, LutSample_Rec709Full)
+{
+  const auto src = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {{YuvLumaCoeffs::Rec709(), YcbcrDesc::Full8()}},
+  };
+  const auto dst = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {},
+  };
+  const auto lut = ColorspaceTransform::Create(src, dst).ToLut3();
+
+  EXPECT_EQ(Sample8From8(lut, {{0, 128, 128}}), (ivec3{0}));
+  EXPECT_EQ(Sample8From8(lut, {{1, 128, 128}}), (ivec3{1}));
+  EXPECT_EQ(Sample8From8(lut, {{16, 128, 128}}), (ivec3{16}));
+  EXPECT_EQ(Sample8From8(lut, {{128, 128, 128}}), (ivec3{128}));
+  EXPECT_EQ(Sample8From8(lut, {{235, 128, 128}}), (ivec3{235}));
+  EXPECT_EQ(Sample8From8(lut, {{254, 128, 128}}), (ivec3{254}));
+  EXPECT_EQ(Sample8From8(lut, {{255, 128, 128}}), (ivec3{255}));
+}
+
+TEST(Colorspaces, PiecewiseGammaDesc_Srgb)
+{
+  const auto tf = PiecewiseGammaDesc::Srgb();
+
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0x00 / 255.0) * 255)), 0x00);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0x01 / 255.0) * 255)), 0x0d);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0x37 / 255.0) * 255)), 0x80);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0x80 / 255.0) * 255)), 0xbc);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0xfd / 255.0) * 255)), 0xfe);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0xfe / 255.0) * 255)), 0xff);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0xff / 255.0) * 255)), 0xff);
+
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x00 / 255.0) * 255)), 0x00);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x01 / 255.0) * 255)), 0x00);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x06 / 255.0) * 255)), 0x00);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x07 / 255.0) * 255)), 0x01);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x0d / 255.0) * 255)), 0x01);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x80 / 255.0) * 255)), 0x37);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0xbc / 255.0) * 255)), 0x80);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0xfe / 255.0) * 255)), 0xfd);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0xff / 255.0) * 255)), 0xff);
+}
+
+TEST(Colorspaces, PiecewiseGammaDesc_Rec709)
+{
+  const auto tf = PiecewiseGammaDesc::Rec709();
+
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0x00 / 255.0) * 255)), 0x00);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0x01 / 255.0) * 255)), 0x05);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0x43 / 255.0) * 255)), 0x80);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0x80 / 255.0) * 255)), 0xb4);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0xfd / 255.0) * 255)), 0xfe);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0xfe / 255.0) * 255)), 0xff);
+  EXPECT_EQ(int(roundf(TfFromLinear(tf, 0xff / 255.0) * 255)), 0xff);
+
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x00 / 255.0) * 255)), 0x00);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x01 / 255.0) * 255)), 0x00);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x02 / 255.0) * 255)), 0x00);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x03 / 255.0) * 255)), 0x01);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x05 / 255.0) * 255)), 0x01);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0x80 / 255.0) * 255)), 0x43);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0xb4 / 255.0) * 255)), 0x80);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0xfe / 255.0) * 255)), 0xfd);
+  EXPECT_EQ(int(roundf(LinearFromTf(tf, 0xff / 255.0) * 255)), 0xff);
+}
+
+TEST(Colorspaces, ColorspaceTransform_PiecewiseGammaDesc)
+{
+  const auto src = ColorspaceDesc{
+      Chromaticities::Srgb(),
+      {},
+      {},
+  };
+  const auto dst = ColorspaceDesc{
+      Chromaticities::Srgb(),
+      PiecewiseGammaDesc::Srgb(),
+      {},
+  };
+  const auto toGamma = ColorspaceTransform::Create(src, dst);
+  const auto toLinear = ColorspaceTransform::Create(dst, src);
+
+  EXPECT_EQ(Calc8From8(toGamma, ivec3{0x00}), (ivec3{0x00}));
+  EXPECT_EQ(Calc8From8(toGamma, ivec3{0x01}), (ivec3{0x0d}));
+  EXPECT_EQ(Calc8From8(toGamma, ivec3{0x37}), (ivec3{0x80}));
+  EXPECT_EQ(Calc8From8(toGamma, ivec3{0x80}), (ivec3{0xbc}));
+  EXPECT_EQ(Calc8From8(toGamma, ivec3{0xfd}), (ivec3{0xfe}));
+  EXPECT_EQ(Calc8From8(toGamma, ivec3{0xff}), (ivec3{0xff}));
+
+  EXPECT_EQ(Calc8From8(toLinear, ivec3{0x00}), (ivec3{0x00}));
+  EXPECT_EQ(Calc8From8(toLinear, ivec3{0x0d}), (ivec3{0x01}));
+  EXPECT_EQ(Calc8From8(toLinear, ivec3{0x80}), (ivec3{0x37}));
+  EXPECT_EQ(Calc8From8(toLinear, ivec3{0xbc}), (ivec3{0x80}));
+  EXPECT_EQ(Calc8From8(toLinear, ivec3{0xfe}), (ivec3{0xfd}));
+  EXPECT_EQ(Calc8From8(toLinear, ivec3{0xff}), (ivec3{0xff}));
+}
+
+// -
+// Actual end-to-end tests
+
+TEST(Colorspaces, SrgbFromRec709)
+{
+  const auto src = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {{YuvLumaCoeffs::Rec709(), YcbcrDesc::Narrow8()}},
+  };
+  const auto dst = ColorspaceDesc{
+      Chromaticities::Srgb(),
+      PiecewiseGammaDesc::Srgb(),
+      {},
+  };
+  const auto ct = ColorspaceTransform::Create(src, dst);
+
+  EXPECT_EQ(Calc8From8(ct, ivec3{{16, 128, 128}}), (ivec3{0}));
+  EXPECT_EQ(Calc8From8(ct, ivec3{{17, 128, 128}}), (ivec3{3}));
+  EXPECT_EQ(Calc8From8(ct, ivec3{{115, 128, 128}}), (ivec3{128}));
+  EXPECT_EQ(Calc8From8(ct, ivec3{{126, 128, 128}}), (ivec3{140}));
+  EXPECT_EQ(Calc8From8(ct, ivec3{{234, 128, 128}}), (ivec3{254}));
+  EXPECT_EQ(Calc8From8(ct, ivec3{{235, 128, 128}}), (ivec3{255}));
+}
+
+TEST(Colorspaces, SrgbFromDisplayP3)
+{
+  const auto p3C = ColorspaceDesc{
+      Chromaticities::DisplayP3(),
+      PiecewiseGammaDesc::DisplayP3(),
+  };
+  const auto srgbC = ColorspaceDesc{
+      Chromaticities::Srgb(),
+      PiecewiseGammaDesc::Srgb(),
+  };
+  const auto srgbLinearC = ColorspaceDesc{
+      Chromaticities::Srgb(),
+      {},
+  };
+  const auto srgbFromP3 = ColorspaceTransform::Create(p3C, srgbC);
+  const auto srgbLinearFromP3 = ColorspaceTransform::Create(p3C, srgbLinearC);
+
+  // E.g.
+  // https://colorjs.io/apps/convert/?color=color(display-p3%200.4%200.8%200.4)&precision=4
+  auto srgb = srgbFromP3.DstFromSrc(vec3{{0.4, 0.8, 0.4}});
+  EXPECT_NEAR(srgb.x(), 0.179, 0.001);
+  EXPECT_NEAR(srgb.y(), 0.812, 0.001);
+  EXPECT_NEAR(srgb.z(), 0.342, 0.001);
+  auto srgbLinear = srgbLinearFromP3.DstFromSrc(vec3{{0.4, 0.8, 0.4}});
+  EXPECT_NEAR(srgbLinear.x(), 0.027, 0.001);
+  EXPECT_NEAR(srgbLinear.y(), 0.624, 0.001);
+  EXPECT_NEAR(srgbLinear.z(), 0.096, 0.001);
+}
+
+// -
+
+template <class Fn, class Tuple, size_t... I>
+constexpr auto map_tups_seq(const Tuple& a, const Tuple& b, const Fn& fn,
+                            std::index_sequence<I...>) {
+  return std::tuple{fn(std::get<I>(a), std::get<I>(b))...};
+}
+template <class Fn, class Tuple>
+constexpr auto map_tups(const Tuple& a, const Tuple& b, const Fn& fn) {
+  return map_tups_seq(a, b, fn,
+                      std::make_index_sequence<std::tuple_size_v<Tuple>>{});
+}
+
+template <class Fn, class Tuple>
+constexpr auto cmp_tups_all(const Tuple& a, const Tuple& b, const Fn& fn) {
+  bool all = true;
+  map_tups(a, b, [&](const auto& a, const auto& b) { return all &= fn(a, b); });
+  return all;
+}
+
+struct Stats {
+  double mean = 0;
+  double variance = 0;
+  double min = std::numeric_limits<double>::infinity();
+  double max = -std::numeric_limits<double>::infinity();
+
+  template <class T>
+  static Stats For(const T& iterable) {
+    auto ret = Stats{};
+    for (const auto& cur : iterable) {
+      ret.mean += cur;
+      ret.min = std::min(ret.min, cur);
+      ret.max = std::max(ret.max, cur);
+    }
+    ret.mean /= iterable.size();
+    // Gather mean first before we can calc variance.
+    for (const auto& cur : iterable) {
+      ret.variance += pow(cur - ret.mean, 2);
+    }
+    ret.variance /= iterable.size();
+    return ret;
+  }
+
+  template <class T, class U>
+  static Stats Diff(const T& a, const U& b) {
+    MOZ_ASSERT(a.size() == b.size());
+    std::vector<double> diff;
+    diff.reserve(a.size());
+    for (size_t i = 0; i < diff.capacity(); i++) {
+      diff.push_back(a[i] - b[i]);
+    }
+    return Stats::For(diff);
+  }
+
+  double standardDeviation() const { return sqrt(variance); }
+
+  friend std::ostream& operator<<(std::ostream& s, const Stats& a) {
+    return s << "Stats"
+             << "{ mean:" << a.mean << ", stddev:" << a.standardDeviation()
+             << ", min:" << a.min << ", max:" << a.max << " }";
+  }
+
+  struct Error {
+    double absmean = std::numeric_limits<double>::infinity();
+    double stddev = std::numeric_limits<double>::infinity();
+    double absmax = std::numeric_limits<double>::infinity();
+
+    constexpr auto Fields() const { return std::tie(absmean, stddev, absmax); }
+
+    template <class Fn>
+    friend constexpr bool cmp_all(const Error& a, const Error& b,
+                                  const Fn& fn) {
+      return cmp_tups_all(a.Fields(), b.Fields(), fn);
+    }
+    friend constexpr bool operator<(const Error& a, const Error& b) {
+      return cmp_all(a, b, [](const auto& a, const auto& b) { return a < b; });
+    }
+    friend constexpr bool operator<=(const Error& a, const Error& b) {
+      return cmp_all(a, b, [](const auto& a, const auto& b) { return a <= b; });
+    }
+
+    friend std::ostream& operator<<(std::ostream& s, const Error& a) {
+      return s << "Stats::Error"
+               << "{ absmean:" << a.absmean << ", stddev:" << a.stddev
+               << ", absmax:" << a.absmax << " }";
+    }
+  };
+
+  operator Error() const {
+    return {abs(mean), standardDeviation(), std::max(abs(min), abs(max))};
+  }
+};
+static_assert(Stats::Error{0, 0, 0} < Stats::Error{1, 1, 1});
+static_assert(!(Stats::Error{0, 1, 0} < Stats::Error{1, 1, 1}));
+static_assert(Stats::Error{0, 1, 0} <= Stats::Error{1, 1, 1});
+static_assert(!(Stats::Error{0, 2, 0} <= Stats::Error{1, 1, 1}));
+
+// -
+
+static Stats StatsForLutError(const ColorspaceTransform& ct,
+                              const ivec3 srcQuants, const ivec3 dstQuants) {
+  const auto lut = ct.ToLut3();
+
+  const auto dstScale = vec3(dstQuants - 1);
+
+  std::vector<double> quantErrors;
+  quantErrors.reserve(srcQuants.x() * srcQuants.y() * srcQuants.z());
+  ForEachSampleWithin(srcQuants, [&](const vec3& src) {
+    const auto sampled = lut.Sample(src);
+    const auto actual = ct.DstFromSrc(src);
+    const auto isampled = ivec3(round(sampled * dstScale));
+    const auto iactual = ivec3(round(actual * dstScale));
+    const auto ierr = abs(isampled - iactual);
+    const auto quantError = dot(ierr, ivec3{1});
+    quantErrors.push_back(quantError);
+    if (quantErrors.size() % 100000 == 0) {
+      printf("%zu of %zu\n", quantErrors.size(), quantErrors.capacity());
+    }
+  });
+
+  const auto quantErrStats = Stats::For(quantErrors);
+  return quantErrStats;
+}
+
+TEST(Colorspaces, LutError_Rec709Full_Rec709Rgb)
+{
+  const auto src = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {{YuvLumaCoeffs::Rec709(), YcbcrDesc::Full8()}},
+  };
+  const auto dst = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {},
+  };
+  const auto ct = ColorspaceTransform::Create(src, dst);
+  const auto stats = StatsForLutError(ct, ivec3{64}, ivec3{256});
+  EXPECT_NEAR(stats.mean, 0.000, 0.001);
+  EXPECT_NEAR(stats.standardDeviation(), 0.008, 0.001);
+  EXPECT_NEAR(stats.min, 0, 0.001);
+  EXPECT_NEAR(stats.max, 1, 0.001);
+}
+
+TEST(Colorspaces, LutError_Rec709Full_Srgb)
+{
+  const auto src = ColorspaceDesc{
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+      {{YuvLumaCoeffs::Rec709(), YcbcrDesc::Full8()}},
+  };
+  const auto dst = ColorspaceDesc{
+      Chromaticities::Srgb(),
+      PiecewiseGammaDesc::Srgb(),
+      {},
+  };
+  const auto ct = ColorspaceTransform::Create(src, dst);
+  const auto stats = StatsForLutError(ct, ivec3{64}, ivec3{256});
+  EXPECT_NEAR(stats.mean, 0.530, 0.001);
+  EXPECT_NEAR(stats.standardDeviation(), 1.674, 0.001);
+  EXPECT_NEAR(stats.min, 0, 0.001);
+  EXPECT_NEAR(stats.max, 17, 0.001);
+}
+
+// -
+// https://www.reedbeta.com/blog/python-like-enumerate-in-cpp17/
+
+template <typename T, typename TIter = decltype(std::begin(std::declval<T>())),
+          typename = decltype(std::end(std::declval<T>()))>
+constexpr auto enumerate(T&& iterable) {
+  struct iterator {
+    size_t i;
+    TIter iter;
+    bool operator!=(const iterator& other) const { return iter != other.iter; }
+    void operator++() {
+      ++i;
+      ++iter;
+    }
+    auto operator*() const { return std::tie(i, *iter); }
+  };
+  struct iterable_wrapper {
+    T iterable;
+    auto begin() { return iterator{0, std::begin(iterable)}; }
+    auto end() { return iterator{0, std::end(iterable)}; }
+  };
+  return iterable_wrapper{std::forward<T>(iterable)};
+}
+
+inline auto MakeLinear(const float from, const float to, const int n) {
+  std::vector<float> ret;
+  ret.resize(n);
+  for (auto [i, val] : enumerate(ret)) {
+    const auto t = i / float(ret.size() - 1);
+    val = from + (to - from) * t;
+  }
+  return ret;
+};
+
+inline auto MakeGamma(const float exp, const int n) {
+  std::vector<float> ret;
+  ret.resize(n);
+  for (auto [i, val] : enumerate(ret)) {
+    const auto t = i / float(ret.size() - 1);
+    val = powf(t, exp);
+  }
+  return ret;
+};
+
+// -
+
+TEST(Colorspaces, GuessGamma)
+{
+  EXPECT_NEAR(GuessGamma(MakeGamma(1, 11)), 1.0, 0);
+  EXPECT_NEAR(GuessGamma(MakeGamma(2.2, 11)), 2.2, 4.8e-8);
+  EXPECT_NEAR(GuessGamma(MakeGamma(1 / 2.2, 11)), 1 / 2.2, 1.7e-7);
+}
+
+// -
+
+template <class T, class U>
+float StdDev(const T& test, const U& ref) {
+  float sum = 0;
+  for (size_t i = 0; i < test.size(); i++) {
+    const auto diff = test[i] - ref[i];
+    sum += diff * diff;
+  }
+  const auto variance = sum / test.size();
+  return sqrt(variance);
+}
+
+template <class T>
+inline void AutoLinearFill(T& vals) {
+  LinearFill(vals, {
+                       {0, 0},
+                       {vals.size() - 1.0f, 1},
+                   });
+}
+
+template <class T, class... More>
+auto MakeArray(const T& a0, const More&... args) {
+  return std::array<T, 1 + sizeof...(More)>{a0, static_cast<float>(args)...};
+}
+
+TEST(Colorspaces, LinearFill)
+{
+  EXPECT_NEAR(StdDev(MakeLinear(0, 1, 3), MakeArray<float>(0, 0.5, 1)), 0,
+              0.001);
+
+  auto vals = std::vector<float>(3);
+  LinearFill(vals, {
+                       {0, 0},
+                       {vals.size() - 1.0f, 1},
+                   });
+  EXPECT_NEAR(StdDev(vals, MakeArray<float>(0, 0.5, 1)), 0, 0.001);
+
+  LinearFill(vals, {
+                       {0, 1},
+                       {vals.size() - 1.0f, 0},
+                   });
+  EXPECT_NEAR(StdDev(vals, MakeArray<float>(1, 0.5, 0)), 0, 0.001);
+}
+
+TEST(Colorspaces, DequantizeMonotonic)
+{
+  auto orig = std::vector<float>{0, 0, 0, 1, 1, 2};
+  auto vals = orig;
+  EXPECT_TRUE(IsMonotonic(vals));
+  EXPECT_TRUE(!IsMonotonic(vals, std::less<float>{}));
+  DequantizeMonotonic(vals);
+  EXPECT_TRUE(IsMonotonic(vals, std::less<float>{}));
+  EXPECT_LT(StdDev(vals, orig),
+            StdDev(MakeLinear(orig.front(), orig.back(), vals.size()), orig));
+}
+
+TEST(Colorspaces, InvertLut)
+{
+  const auto linear = MakeLinear(0, 1, 256);
+  auto linearFromSrgb = linear;
+  for (auto& val : linearFromSrgb) {
+    val = powf(val, 2.2);
+  }
+  auto srgbFromLinearExpected = linear;
+  for (auto& val : srgbFromLinearExpected) {
+    val = powf(val, 1 / 2.2);
+  }
+
+  auto srgbFromLinearViaInvert = linearFromSrgb;
+  InvertLut(linearFromSrgb, &srgbFromLinearViaInvert);
+  // I just want to appreciate that InvertLut is a non-analytical approximation,
+  // and yet it's extraordinarily close to the analytical inverse.
+  EXPECT_LE(Stats::Diff(srgbFromLinearViaInvert, srgbFromLinearExpected),
+            (Stats::Error{3e-6, 3e-6, 3e-5}));
+
+  const auto srcSrgb = MakeLinear(0, 1, 256);
+  auto roundtripSrgb = srcSrgb;
+  for (auto& srgb : roundtripSrgb) {
+    const auto linear = SampleOutByIn(linearFromSrgb, srgb);
+    const auto srgb2 = SampleOutByIn(srgbFromLinearViaInvert, linear);
+    // printf("[%f] %f -> %f -> %f\n", srgb2-srgb, srgb, linear, srgb2);
+    srgb = srgb2;
+  }
+  EXPECT_LE(Stats::Diff(roundtripSrgb, srcSrgb),
+            (Stats::Error{0.0013, 0.0046, 0.023}));
+}
+
+TEST(Colorspaces, XyzFromLinearRgb)
+{
+  const auto xyzd65FromLinearRgb = XyzFromLinearRgb(Chromaticities::Srgb());
+
+  // http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
+  const auto XYZD65_FROM_LINEAR_RGB = mat3({
+      vec3{{0.4124564, 0.3575761, 0.1804375}},
+      vec3{{0.2126729, 0.7151522, 0.0721750}},
+      vec3{{0.0193339, 0.1191920, 0.9503041}},
+  });
+  EXPECT_NEAR(sqrt(dotDifference(xyzd65FromLinearRgb, XYZD65_FROM_LINEAR_RGB)),
+              0, 0.001);
+}
+
+TEST(Colorspaces, ColorProfileConversionDesc_SrgbFromRec709)
+{
+  const auto srgb = ColorProfileDesc::From({
+      Chromaticities::Srgb(),
+      PiecewiseGammaDesc::Srgb(),
+  });
+  const auto rec709 = ColorProfileDesc::From({
+      Chromaticities::Rec709(),
+      PiecewiseGammaDesc::Rec709(),
+  });
+
+  {
+    const auto conv = ColorProfileConversionDesc::From({
+        .src = srgb,
+        .dst = srgb,
+    });
+    auto src = vec3(16.0);
+    auto dst = conv.Apply(src / 255) * 255;
+
+    const auto tfa = PiecewiseGammaDesc::Srgb();
+    const auto tfb = PiecewiseGammaDesc::Srgb();
+    const auto expected =
+        TfFromLinear(tfb, LinearFromTf(tfa, src.x() / 255)) * 255;
+
+    printf("%f %f %f\n", src.x(), src.y(), src.z());
+    printf("%f %f %f\n", dst.x(), dst.y(), dst.z());
+    EXPECT_LT(Stats::Diff(dst.data, vec3(expected).data), (Stats::Error{0.42}));
+  }
+  {
+    const auto conv = ColorProfileConversionDesc::From({
+        .src = rec709,
+        .dst = rec709,
+    });
+    auto src = vec3(16.0);
+    auto dst = conv.Apply(src / 255) * 255;
+
+    const auto tfa = PiecewiseGammaDesc::Rec709();
+    const auto tfb = PiecewiseGammaDesc::Rec709();
+    const auto expected =
+        TfFromLinear(tfb, LinearFromTf(tfa, src.x() / 255)) * 255;
+
+    printf("%f %f %f\n", src.x(), src.y(), src.z());
+    printf("%f %f %f\n", dst.x(), dst.y(), dst.z());
+    EXPECT_LT(Stats::Diff(dst.data, vec3(expected).data), (Stats::Error{1e-6}));
+  }
+  {
+    const auto conv = ColorProfileConversionDesc::From({
+        .src = rec709,
+        .dst = srgb,
+    });
+    auto src = vec3(16.0);
+    auto dst = conv.Apply(src / 255) * 255;
+
+    const auto tfa = PiecewiseGammaDesc::Rec709();
+    const auto tfb = PiecewiseGammaDesc::Srgb();
+    const auto expected =
+        TfFromLinear(tfb, LinearFromTf(tfa, src.x() / 255)) * 255;
+    printf("expected: %f\n", expected);
+    printf("%f %f %f\n", src.x(), src.y(), src.z());
+    printf("%f %f %f\n", dst.x(), dst.y(), dst.z());
+    EXPECT_LT(Stats::Diff(dst.data, vec3(expected).data), (Stats::Error{0.12}));
+  }
+}
diff --git a/gfx/gl/gtest/moz.build b/gfx/gl/gtest/moz.build
new file mode 100644
index 0000000000..5b57e3ded1
--- /dev/null
+++ b/gfx/gl/gtest/moz.build
@@ -0,0 +1,15 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+LOCAL_INCLUDES += [
+    "/gfx/gl",
+]
+
+UNIFIED_SOURCES += [
+    "TestColorspaces.cpp",
+]
+
+FINAL_LIBRARY = "xul-gtest"
diff --git a/gfx/gl/moz.build b/gfx/gl/moz.build
new file mode 100644
index 0000000000..e594ba8ac9
--- /dev/null
+++ b/gfx/gl/moz.build
@@ -0,0 +1,169 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+gl_provider = "Null"
+
+if CONFIG["MOZ_WIDGET_TOOLKIT"] == "windows":
+    gl_provider = "WGL"
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "cocoa":
+    gl_provider = "CGL"
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "uikit":
+    gl_provider = "EAGL"
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "gtk":
+    gl_provider = "Linux"
+elif CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
+    gl_provider = "EGL"
+
+if CONFIG["MOZ_GL_PROVIDER"]:
+    gl_provider = CONFIG["MOZ_GL_PROVIDER"]
+
+EXPORTS += [
+    "AndroidSurfaceTexture.h",
+    "AutoMappable.h",
+    "Colorspaces.h",
+    "ForceDiscreteGPUHelperCGL.h",
+    "GfxTexturesReporter.h",
+    "GLBlitHelper.h",
+    "GLConsts.h",
+    "GLContext.h",
+    "GLContextEGL.h",
+    "GLContextProvider.h",
+    "GLContextProviderImpl.h",
+    "GLContextSymbols.h",
+    "GLContextTypes.h",
+    "GLDefs.h",
+    "GLLibraryEGL.h",
+    "GLLibraryLoader.h",
+    "GLReadTexImageHelper.h",
+    "GLScreenBuffer.h",
+    "GLTextureImage.h",
+    "GLTypes.h",
+    "GLUploadHelpers.h",
+    "GLVendor.h",
+    "HeapCopyOfStackArray.h",
+    "MozFramebuffer.h",
+    "ScopedGLHelpers.h",
+    "SharedSurface.h",
+    "SharedSurfaceEGL.h",
+    "SharedSurfaceGL.h",
+    "SurfaceTypes.h",
+]
+
+# Win32 is a special snowflake, for ANGLE
+if CONFIG["MOZ_WIDGET_TOOLKIT"] == "windows":
+    EXPORTS += [
+        "GLContextWGL.h",
+        "SharedSurfaceANGLE.h",  # Needs <windows.h> for `HANDLE`.
+        "SharedSurfaceD3D11Interop.h",
+        "WGLLibrary.h",
+    ]
+    UNIFIED_SOURCES += [
+        "GLBlitHelperD3D.cpp",
+        "GLContextProviderWGL.cpp",
+        "SharedSurfaceANGLE.cpp",
+        "SharedSurfaceD3D11Interop.cpp",
+    ]
+
+if CONFIG["MOZ_WIDGET_TOOLKIT"] == "android":
+    EXPORTS += [
+        "AndroidNativeWindow.h",
+        "SharedSurfaceAndroidHardwareBuffer.h",
+    ]
+    UNIFIED_SOURCES += [
+        "SharedSurfaceAndroidHardwareBuffer.cpp",
+    ]
+
+if gl_provider == "CGL":
+    # These files include Mac headers that are unfriendly to unified builds
+    SOURCES += [
+        "GLContextProviderCGL.mm",
+    ]
+    EXPORTS += [
+        "GLContextCGL.h",
+        "SharedSurfaceIO.h",
+    ]
+    # SharedSurfaceIO.cpp includes MacIOSurface.h which include Mac headers
+    # which define Size and Point types in root namespace with often conflict with
+    # our own types. While I haven't actually hit this issue in the present case,
+    # it's been an issue in gfx/layers so let's not risk it.
+    SOURCES += [
+        "SharedSurfaceIO.cpp",
+    ]
+    OS_LIBS += [
+        "-framework IOSurface",
+    ]
+
+elif gl_provider == "EAGL":
+    # These files include ObjC headers that are unfriendly to unified builds
+    SOURCES += [
+        "GLContextProviderEAGL.mm",
+    ]
+    EXPORTS += [
+        "GLContextEAGL.h",
+    ]
+
+elif gl_provider == "Linux":
+    # GLContextProviderGLX.cpp needs to be kept out of UNIFIED_SOURCES
+    # as it includes X11 headers which cause conflicts.
+    SOURCES += [
+        "GLContextProviderLinux.cpp",
+    ]
+    EXPORTS += ["GLContextGLX.h", "GLXLibrary.h"]
+    if CONFIG["MOZ_X11"]:
+        SOURCES += ["GLContextProviderGLX.cpp"]
+
+if CONFIG["MOZ_WAYLAND"]:
+    SOURCES += ["SharedSurfaceDMABUF.cpp"]
+
+UNIFIED_SOURCES += [
+    "AndroidSurfaceTexture.cpp",
+    "Colorspaces.cpp",
+    "GfxTexturesReporter.cpp",
+    "GLBlitHelper.cpp",
+    "GLContext.cpp",
+    "GLContextFeatures.cpp",
+    "GLContextProviderEGL.cpp",
+    "GLDebugUtils.cpp",
+    "GLLibraryEGL.cpp",
+    "GLLibraryLoader.cpp",
+    "GLReadTexImageHelper.cpp",
+    "GLTextureImage.cpp",
+    "GLUploadHelpers.cpp",
+    "MozFramebuffer.cpp",
+    "ScopedGLHelpers.cpp",
+    "SharedSurface.cpp",
+    "SharedSurfaceEGL.cpp",
+    "SharedSurfaceGL.cpp",
+]
+SOURCES += [
+    "GLScreenBuffer.cpp",
+]
+
+TEST_DIRS += [
+    "gtest",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+FINAL_LIBRARY = "xul"
+
+if CONFIG["MOZ_D3DCOMPILER_VISTA_DLL"]:
+    DEFINES["MOZ_D3DCOMPILER_VISTA_DLL"] = CONFIG["MOZ_D3DCOMPILER_VISTA_DLL"]
+
+if CONFIG["MOZ_WIDGET_TOOLKIT"] == "gtk":
+    CXXFLAGS += CONFIG["MOZ_GTK3_CFLAGS"]
+    CFLAGS += CONFIG["MOZ_GTK3_CFLAGS"]
+
+CXXFLAGS += ["-Werror=switch"]
+
+if CONFIG["MOZ_WAYLAND"]:
+    CXXFLAGS += CONFIG["MOZ_WAYLAND_CFLAGS"]
+    CFLAGS += CONFIG["MOZ_WAYLAND_CFLAGS"]
+
+LOCAL_INCLUDES += CONFIG["SKIA_INCLUDES"]
+LOCAL_INCLUDES += [
+    "/gfx/cairo/cairo/src",
+]
author	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-21 11:44:51 +0000
committer	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-21 11:44:51 +0000
commit	9e3c08db40b8916968b9f30096c7be3f00ce9647 (patch)
tree	a68f146d7fa01f0134297619fbe7e33db084e0aa /gfx/gl
parent	Initial commit. (diff)
download	thunderbird-9e3c08db40b8916968b9f30096c7be3f00ce9647.tar.xz thunderbird-9e3c08db40b8916968b9f30096c7be3f00ce9647.zip