1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// This file contains the GLStateRestorerImpl class.
6
7#ifndef GPU_COMMAND_BUFFER_SERVICE_GL_STATE_RESTORER_IMPL_H_
8#define GPU_COMMAND_BUFFER_SERVICE_GL_STATE_RESTORER_IMPL_H_
9
10#include "base/compiler_specific.h"
11#include "base/memory/weak_ptr.h"
12#include "gpu/gpu_export.h"
13#include "ui/gl/gl_state_restorer.h"
14
15namespace gpu {
16namespace gles2 {
17class GLES2Decoder;
18struct ContextState;
19}
20
21// This class implements a GLStateRestorer that forwards to a GLES2Decoder.
22class GPU_EXPORT GLStateRestorerImpl : public gfx::GLStateRestorer {
23 public:
24   explicit GLStateRestorerImpl(base::WeakPtr<gles2::GLES2Decoder> decoder);
25   virtual ~GLStateRestorerImpl();
26
27   virtual bool IsInitialized() OVERRIDE;
28   virtual void RestoreState(const gfx::GLStateRestorer* prev_state) OVERRIDE;
29   virtual void RestoreAllTextureUnitBindings() OVERRIDE;
30   virtual void RestoreActiveTextureUnitBinding(unsigned int target) OVERRIDE;
31   virtual void RestoreFramebufferBindings() OVERRIDE;
32
33 private:
34   const gles2::ContextState* GetContextState() const;
35   base::WeakPtr<gles2::GLES2Decoder> decoder_;
36
37   DISALLOW_COPY_AND_ASSIGN(GLStateRestorerImpl);
38};
39
40}  // namespace gpu
41
42#endif  // GPU_COMMAND_BUFFER_SERVICE_GL_STATE_RESTORER_IMPL_H_
43