WebGL: GL_RGB emulation for IOSurface backed textures. [For reference only]

gpu/command_buffer/service/texture_definition.cc

 // Copyright 2014 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 "gpu/command_buffer/service/texture_definition.h"
 
 #include <stdint.h>
 
 #include <list>
 
@@ skipping 36 matching lines @@
                        const gfx::Point& offset,
                        const gfx::Rect& rect) override;
   bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                             int z_order,
                             gfx::OverlayTransform transform,
                             const gfx::Rect& bounds_rect,
                             const gfx::RectF& crop_rect) override;
   void OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
                     uint64_t process_tracing_id,
                     const std::string& dump_name) override;
+  bool EmulatingRGB() const override;
 
  protected:
   ~GLImageSync() override;
 
  private:
   scoped_refptr<NativeImageBuffer> buffer_;
   gfx::Size size_;
 
   DISALLOW_COPY_AND_ASSIGN(GLImageSync);
 };
@@ skipping 48 matching lines @@
   NOTREACHED();
   return false;
 }
 
 void GLImageSync::OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
                                uint64_t process_tracing_id,
                                const std::string& dump_name) {
   // TODO(ericrk): Implement GLImage OnMemoryDump. crbug.com/514914
 }
 
+bool GLImageSync::EmulatingRGB() const {
+  return false;
+}
+
 #if !defined(OS_MACOSX)
 class NativeImageBufferEGL : public NativeImageBuffer {
  public:
   static scoped_refptr<NativeImageBufferEGL> Create(GLuint texture_id);
 
  private:
   NativeImageBufferEGL(EGLDisplay display, EGLImageKHR image);
   ~NativeImageBufferEGL() override;
   void AddClient(gl::GLImage* client) override;
   void RemoveClient(gl::GLImage* client) override;
@@ skipping 331 matching lines @@
   return true;
 }
 
 bool TextureDefinition::SafeToRenderFrom() const {
   return level_info_.cleared_rect.Contains(
       gfx::Rect(level_info_.width, level_info_.height));
 }
 
 }  // namespace gles2
 }  // namespace gpu