remove ETC2/EAC texture support in core WebGL 2

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/webgl/WebGL2RenderingContextBase.h"
 
 #include "bindings/modules/v8/WebGLAny.h"
 #include "core/frame/ImageBitmap.h"
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/HTMLImageElement.h"
@@ skipping 117 matching lines @@
     GL_RGBA16I,
     GL_RGBA32UI,
     GL_RGBA32I,
     GL_DEPTH_COMPONENT16,
     GL_DEPTH_COMPONENT24,
     GL_DEPTH_COMPONENT32F,
     GL_DEPTH24_STENCIL8,
     GL_DEPTH32F_STENCIL8,
 };
 
-const GLenum kCompressedTextureFormatsETC2EAC[] = {
-    GL_COMPRESSED_R11_EAC,
-    GL_COMPRESSED_SIGNED_R11_EAC,
-    GL_COMPRESSED_RG11_EAC,
-    GL_COMPRESSED_SIGNED_RG11_EAC,
-    GL_COMPRESSED_RGB8_ETC2,
-    GL_COMPRESSED_SRGB8_ETC2,
-    GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
-    GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
-    GL_COMPRESSED_RGBA8_ETC2_EAC,
-    GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
-};
-
 WebGL2RenderingContextBase::WebGL2RenderingContextBase(
     HTMLCanvasElement* passedCanvas,
     std::unique_ptr<WebGraphicsContext3DProvider> contextProvider,
     const CanvasContextCreationAttributes& requestedAttributes)
     : WebGLRenderingContextBase(passedCanvas,
                                 std::move(contextProvider),
                                 requestedAttributes,
                                 2) {
   m_supportedInternalFormatsStorage.insert(
       kSupportedInternalFormatsStorage,
       kSupportedInternalFormatsStorage +
           WTF_ARRAY_LENGTH(kSupportedInternalFormatsStorage));
-  m_supportedInternalFormatsStorage.insert(
-      kCompressedTextureFormatsETC2EAC,
-      kCompressedTextureFormatsETC2EAC +
-          WTF_ARRAY_LENGTH(kCompressedTextureFormatsETC2EAC));
-  m_compressedTextureFormatsETC2EAC.insert(
-      kCompressedTextureFormatsETC2EAC,
-      kCompressedTextureFormatsETC2EAC +
-          WTF_ARRAY_LENGTH(kCompressedTextureFormatsETC2EAC));
-  m_compressedTextureFormats.append(
-      kCompressedTextureFormatsETC2EAC,
-      WTF_ARRAY_LENGTH(kCompressedTextureFormatsETC2EAC));
 }
 
 WebGL2RenderingContextBase::~WebGL2RenderingContextBase() {
   m_readFramebufferBinding = nullptr;
 
   m_boundCopyReadBuffer = nullptr;
   m_boundCopyWriteBuffer = nullptr;
   m_boundPixelPackBuffer = nullptr;
   m_boundPixelUnpackBuffer = nullptr;
   m_boundTransformFeedbackBuffer = nullptr;
@@ skipping 4321 matching lines @@
   params.skipPixels = m_unpackSkipPixels;
   params.skipRows = m_unpackSkipRows;
   if (dimension == Tex3D) {
     params.imageHeight = m_unpackImageHeight;
     params.skipImages = m_unpackSkipImages;
   }
   return params;
 }
 
 }  // namespace blink