1 files changed, 174 insertions, 0 deletions
diff --git a/gfx/gl/GLContextEGL.h b/gfx/gl/GLContextEGL.h
new file mode 100644
index 0000000000..a57a1e35b8
--- /dev/null
+++ b/gfx/gl/GLContextEGL.h
@@ -0,0 +1,174 @@
+/* -*- 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>
+
+class gfxASurface;
+namespace mozilla {
+namespace layers {
+class SurfaceTextureImage;
+}  // namespace layers
+namespace widget {
+class CompositorWidget;
+}  // namespace widget
+namespace gl {
+
+RefPtr<GLLibraryEGL> DefaultEglLibrary(nsACString* const out_failureId);
+
+inline std::shared_ptr<EglDisplay> DefaultEglDisplay(
+    nsACString* const out_failureId) {
+  const auto lib = DefaultEglLibrary(out_failureId);
+  if (!lib) {
+    return nullptr;
+  }
+  return lib->DefaultDisplay(out_failureId);
+}
+
+// -
+
+class GLContextEGL final : public GLContext {
+  friend class TextureImageEGL;
+
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GLContextEGL, override)
+
+  static RefPtr<GLContextEGL> CreateGLContext(
+      std::shared_ptr<EglDisplay>, const GLContextDesc&, EGLConfig config,
+      EGLSurface surface, const bool useGles, nsACString* const out_failureId);
+
+ private:
+  GLContextEGL(std::shared_ptr<EglDisplay>, const GLContextDesc&,
+               EGLConfig config, 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;
+
+  // hold a reference to the given surface
+  // for the lifetime of this context.
+  void HoldSurface(gfxASurface* aSurf);
+
+  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> CreateEGLPBufferOffscreenContext(
+      std::shared_ptr<EglDisplay>, const GLContextCreateDesc&,
+      const gfx::IntSize& size, nsACString* const out_FailureId);
+  static RefPtr<GLContextEGL> CreateEGLPBufferOffscreenContextImpl(
+      std::shared_ptr<EglDisplay>, const GLContextCreateDesc&,
+      const gfx::IntSize& size, bool aUseGles, nsACString* const out_FailureId);
+
+  static EGLSurface CreateEGLSurfaceForCompositorWidget(
+      widget::CompositorWidget* aCompositorWidget, const EGLConfig aConfig);
+
+#ifdef MOZ_X11
+  static bool FindVisual(bool aUseWebRender, bool useAlpha,
+                         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 mConfig;
+  const EGLContext mContext;
+
+ protected:
+  EGLSurface mSurface;
+  const EGLSurface mFallbackSurface;
+
+  EGLSurface mSurfaceOverride = EGL_NO_SURFACE;
+  RefPtr<gfxASurface> mThebesSurface;
+  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);
+
+  static EGLSurface CreateWaylandBufferSurface(EglDisplay&, EGLConfig,
+                                               gfx::IntSize& pbsize);
+
+ public:
+  EGLSurface CreateCompatibleSurface(void* aWindow) const;
+};
+
+// -
+// aVisual is used in Linux only to exactly match window and framebuffer
+// visuals on NVIDIA drivers (Bug 1478454).
+bool CreateConfig(EglDisplay&, EGLConfig* aConfig, int32_t depth,
+                  bool aEnableDepthBuffer, bool aUseGles, int aVisual = 0);
+
+}  // namespace gl
+}  // namespace mozilla
+
+#endif  // GLCONTEXTEGL_H_