Restore only modified texture state during virtual context switches

gpu/command_buffer/service/gles2_cmd_decoder.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.
 
 // This file contains the GLES2Decoder class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "gpu/command_buffer/common/capabilities.h"
 #include "gpu/command_buffer/service/common_decoder.h"
 #include "gpu/command_buffer/service/logger.h"
 #include "ui/gfx/size.h"
 #include "ui/gl/gl_context.h"
 
 namespace gfx {
+class DirtyTextureState;
 class GLContext;
 class GLSurface;
 }
 
 namespace gpu {
 
 class AsyncPixelTransferDelegate;
 class AsyncPixelTransferManager;
 class StreamTextureManager;
 struct Mailbox;
@@ skipping 100 matching lines @@
 
   // Gets the associated GLContext.
   virtual gfx::GLContext* GetGLContext() = 0;
 
   // Gets the associated ContextGroup
   virtual ContextGroup* GetContextGroup() = 0;
 
   virtual Capabilities GetCapabilities() = 0;
 
   // Restores all of the decoder GL state.
-  virtual void RestoreState() const = 0;
+  virtual void RestoreState(
+      const gfx::DirtyTextureState* dirty_texture_state) const = 0;
 
   // Restore States.
   virtual void RestoreActiveTexture() const = 0;
   virtual void RestoreAllTextureUnitBindings() const = 0;
   virtual void RestoreAttribute(unsigned index) const = 0;
   virtual void RestoreBufferBindings() const = 0;
   virtual void RestoreFramebufferBindings() const = 0;
   virtual void RestoreGlobalState() const = 0;
   virtual void RestoreProgramBindings() const = 0;
   virtual void RestoreRenderbufferBindings() const = 0;
@@ skipping 80 matching lines @@
  private:
   bool initialized_;
   bool debug_;
   bool log_commands_;
 
   DISALLOW_COPY_AND_ASSIGN(GLES2Decoder);
 };
 
 }  // namespace gles2
 }  // namespace gpu
+
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_