1 files changed, 247 insertions, 0 deletions
diff --git a/dom/canvas/WebGLContextTextures.cpp b/dom/canvas/WebGLContextTextures.cpp
new file mode 100644
index 0000000000..e65533ec94
--- /dev/null
+++ b/dom/canvas/WebGLContextTextures.cpp
@@ -0,0 +1,247 @@
+/* -*- 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 "WebGLContext.h"
+#include "WebGLContextUtils.h"
+#include "WebGLBuffer.h"
+#include "WebGLShader.h"
+#include "WebGLProgram.h"
+#include "WebGLFramebuffer.h"
+#include "WebGLRenderbuffer.h"
+#include "WebGLTexture.h"
+#include "WebGLExtensions.h"
+#include "WebGLVertexArray.h"
+
+#include "nsString.h"
+#include "nsDebug.h"
+#include "nsReadableUtils.h"
+
+#include "gfxContext.h"
+#include "gfxPlatform.h"
+#include "GLContext.h"
+
+#include "nsContentUtils.h"
+#include "nsError.h"
+#include "nsLayoutUtils.h"
+
+#include "CanvasUtils.h"
+#include "gfxUtils.h"
+
+#include "jsfriendapi.h"
+
+#include "WebGLTexelConversions.h"
+#include "WebGLValidateStrings.h"
+#include <algorithm>
+
+#include "mozilla/DebugOnly.h"
+#include "mozilla/dom/BindingUtils.h"
+#include "mozilla/dom/ImageData.h"
+#include "mozilla/EndianUtils.h"
+
+namespace mozilla {
+
+/*virtual*/
+bool WebGLContext::IsTexParamValid(GLenum pname) const {
+  switch (pname) {
+    case LOCAL_GL_TEXTURE_MIN_FILTER:
+    case LOCAL_GL_TEXTURE_MAG_FILTER:
+    case LOCAL_GL_TEXTURE_WRAP_S:
+    case LOCAL_GL_TEXTURE_WRAP_T:
+      return true;
+
+    case LOCAL_GL_TEXTURE_MAX_ANISOTROPY_EXT:
+      return IsExtensionEnabled(
+          WebGLExtensionID::EXT_texture_filter_anisotropic);
+
+    default:
+      return false;
+  }
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// GL calls
+
+void WebGLContext::BindTexture(GLenum rawTarget, WebGLTexture* newTex) {
+  FuncScope funcScope(*this, "bindTexture");
+  if (IsContextLost()) return;
+  funcScope.mBindFailureGuard = true;
+
+  if (newTex && !ValidateObject("tex", *newTex)) return;
+
+  // Need to check rawTarget first before comparing against newTex->Target() as
+  // newTex->Target() returns a TexTarget, which will assert on invalid value.
+  RefPtr<WebGLTexture>* currentTexPtr = nullptr;
+  switch (rawTarget) {
+    case LOCAL_GL_TEXTURE_2D:
+      currentTexPtr = &mBound2DTextures[mActiveTexture];
+      break;
+
+    case LOCAL_GL_TEXTURE_CUBE_MAP:
+      currentTexPtr = &mBoundCubeMapTextures[mActiveTexture];
+      break;
+
+    case LOCAL_GL_TEXTURE_3D:
+      if (IsWebGL2()) currentTexPtr = &mBound3DTextures[mActiveTexture];
+      break;
+
+    case LOCAL_GL_TEXTURE_2D_ARRAY:
+      if (IsWebGL2()) currentTexPtr = &mBound2DArrayTextures[mActiveTexture];
+      break;
+  }
+
+  if (!currentTexPtr) {
+    ErrorInvalidEnumInfo("target", rawTarget);
+    return;
+  }
+
+  const TexTarget texTarget(rawTarget);
+  if (newTex) {
+    if (!newTex->BindTexture(texTarget)) return;
+  } else {
+    gl->fBindTexture(texTarget.get(), 0);
+  }
+
+  *currentTexPtr = newTex;
+
+  funcScope.mBindFailureGuard = false;
+}
+
+void WebGLContext::GenerateMipmap(GLenum texTarget) {
+  const FuncScope funcScope(*this, "generateMipmap");
+
+  const auto& tex = GetActiveTex(texTarget);
+  if (!tex) return;
+  tex->GenerateMipmap();
+}
+
+Maybe<double> WebGLContext::GetTexParameter(const WebGLTexture& tex,
+                                            GLenum pname) const {
+  const FuncScope funcScope(*this, "getTexParameter");
+
+  if (!IsTexParamValid(pname)) {
+    ErrorInvalidEnumInfo("pname", pname);
+    return Nothing();
+  }
+
+  return tex.GetTexParameter(pname);
+}
+
+void WebGLContext::TexParameter_base(GLenum texTarget, GLenum pname,
+                                     const FloatOrInt& param) {
+  const FuncScope funcScope(*this, "texParameter");
+
+  const auto& tex = GetActiveTex(texTarget);
+  if (!tex) return;
+  tex->TexParameter(texTarget, pname, param);
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////
+// Uploads
+
+WebGLTexture* WebGLContext::GetActiveTex(const GLenum texTarget) const {
+  const auto* list = &mBound2DTextures;
+  switch (texTarget) {
+    case LOCAL_GL_TEXTURE_2D:
+      break;
+    case LOCAL_GL_TEXTURE_CUBE_MAP:
+      list = &mBoundCubeMapTextures;
+      break;
+    case LOCAL_GL_TEXTURE_3D:
+      list = IsWebGL2() ? &mBound3DTextures : nullptr;
+      break;
+    case LOCAL_GL_TEXTURE_2D_ARRAY:
+      list = IsWebGL2() ? &mBound2DArrayTextures : nullptr;
+      break;
+    default:
+      list = nullptr;
+  }
+  if (!list) {
+    ErrorInvalidEnumArg("target", texTarget);
+    return nullptr;
+  }
+  const auto& tex = (*list)[mActiveTexture];
+  if (!tex) {
+    GenerateError(LOCAL_GL_INVALID_OPERATION, "No texture bound to %s[%u].",
+                  EnumString(texTarget).c_str(), mActiveTexture);
+    return nullptr;
+  }
+  return tex;
+}
+
+void WebGLContext::TexStorage(GLenum texTarget, uint32_t levels,
+                              GLenum internalFormat, uvec3 size) const {
+  const FuncScope funcScope(*this, "texStorage(Multisample)?");
+  if (!IsTexTarget3D(texTarget)) {
+    size.z = 1;
+  }
+  const auto tex = GetActiveTex(texTarget);
+  if (!tex) return;
+  tex->TexStorage(texTarget, levels, internalFormat, size);
+}
+
+void WebGLContext::TexImage(uint32_t level, GLenum respecFormat, uvec3 offset,
+                            const webgl::PackingInfo& pi,
+                            const webgl::TexUnpackBlobDesc& src) const {
+  const WebGLContext::FuncScope funcScope(
+      *this, bool(respecFormat) ? "texImage" : "texSubImage");
+
+  const bool isUploadFromPbo = bool(src.pboOffset);
+  const bool isPboBound = bool(mBoundPixelUnpackBuffer);
+  if (isUploadFromPbo != isPboBound) {
+    GenerateError(LOCAL_GL_INVALID_OPERATION,
+                  "Tex upload from %s but PIXEL_UNPACK_BUFFER %s bound.",
+                  isUploadFromPbo ? "PBO" : "non-PBO",
+                  isPboBound ? "was" : "was not");
+    return;
+  }
+
+  if (respecFormat) {
+    offset = {0, 0, 0};
+  }
+  const auto texTarget = ImageToTexTarget(src.imageTarget);
+  const auto tex = GetActiveTex(texTarget);
+  if (!tex) return;
+  tex->TexImage(level, respecFormat, offset, pi, src);
+}
+
+void WebGLContext::CompressedTexImage(bool sub, GLenum imageTarget,
+                                      uint32_t level, GLenum format,
+                                      uvec3 offset, uvec3 size,
+                                      const Range<const uint8_t>& src,
+                                      const uint32_t pboImageSize,
+                                      const Maybe<uint64_t>& pboOffset) const {
+  const WebGLContext::FuncScope funcScope(
+      *this, !sub ? "compressedTexImage" : "compressedTexSubImage");
+
+  if (!sub) {
+    offset = {0, 0, 0};
+  }
+  const auto texTarget = ImageToTexTarget(imageTarget);
+  if (!IsTexTarget3D(texTarget)) {
+    size.z = 1;
+  }
+  const auto tex = GetActiveTex(texTarget);
+  if (!tex) return;
+  tex->CompressedTexImage(sub, imageTarget, level, format, offset, size, src,
+                          pboImageSize, pboOffset);
+}
+
+void WebGLContext::CopyTexImage(GLenum imageTarget, uint32_t level,
+                                GLenum respecFormat, uvec3 dstOffset,
+                                const ivec2& srcOffset,
+                                const uvec2& size) const {
+  const WebGLContext::FuncScope funcScope(
+      *this, bool(respecFormat) ? "copyTexImage" : "copyTexSubImage");
+
+  if (respecFormat) {
+    dstOffset = {0, 0, 0};
+  }
+  const auto tex = GetActiveTex(ImageToTexTarget(imageTarget));
+  if (!tex) return;
+  tex->CopyTexImage(imageTarget, level, respecFormat, dstOffset, srcOffset,
+                    size);
+}
+
+}  // namespace mozilla