Add command buffer support for GL_RGB CHROMIUM image emulation.

gpu/command_buffer/service/texture_manager.h

 // Copyright (c) 2012 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 251 matching lines @@
 
   // Initialize TEXTURE_MAX_ANISOTROPY to 1 if we haven't done so yet.
   void InitTextureMaxAnisotropyIfNeeded(GLenum target);
 
   void DumpLevelMemory(base::trace_event::ProcessMemoryDump* pmd,
                        uint64_t client_tracing_id,
                        const std::string& dump_name) const;
 
   void ApplyFormatWorkarounds(FeatureInfo* feature_info);
 
+  bool EmulatingRGB();
+
  private:
   friend class MailboxManagerImpl;
   friend class MailboxManagerSync;
   friend class MailboxManagerTest;
   friend class TextureDefinition;
   friend class TextureManager;
   friend class TextureRef;
   friend class TextureTestHelper;
 
   ~Texture();
@@ skipping 199 matching lines @@
   CanRenderCondition GetCanRenderCondition() const;
 
   // Updates the unrenderable texture count in all the managers referencing this
   // texture.
   void UpdateCanRenderCondition();
 
   // Updates the images count in all the managers referencing this
   // texture.
   void UpdateHasImages();
 
+  // Updates the flag that indicates whether this texture requires RGB
+  // emulation.
+  void UpdateEmulatingRGB();
+
   // Increment the framebuffer state change count in all the managers
   // referencing this texture.
   void IncAllFramebufferStateChangeCount();
 
   void UpdateBaseLevel(GLint base_level);
   void UpdateMaxLevel(GLint max_level);
   void UpdateNumMipLevels();
 
   // Increment the generation counter for all managers that have a reference to
   // this texture.
@@ skipping 84 matching lines @@
   uint32_t estimated_size_;
 
   // Cache of the computed CanRenderCondition flag.
   CanRenderCondition can_render_condition_;
 
   // Whether we have initialized TEXTURE_MAX_ANISOTROPY to 1.
   bool texture_max_anisotropy_initialized_;
 
   const CompatibilitySwizzle* compatibility_swizzle_;
 
+  bool emulating_rgb_;
+
   DISALLOW_COPY_AND_ASSIGN(Texture);
 };
 
 // This class represents a texture in a client context group. It's mostly 1:1
 // with a client id, though it can outlive the client id if it's still bound to
 // a FBO or another context when destroyed.
 // Multiple TextureRef can point to the same texture with cross-context sharing.
 class GPU_EXPORT TextureRef : public base::RefCounted<TextureRef> {
  public:
   TextureRef(TextureManager* manager, GLuint client_id, Texture* texture);
@@ skipping 533 matching lines @@
  private:
   DecoderTextureState* texture_state_;
   base::TimeTicks begin_time_;
   DISALLOW_COPY_AND_ASSIGN(ScopedTextureUploadTimer);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_TEXTURE_MANAGER_H_