gpu/command_buffer/service/gl_state_restorer_impl.h

   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
  15 namespace gpu {
  16 namespace gles2 {
  17 class GLES2Decoder;
  18 struct ContextState;
  19 }
  20
  21 // This class implements a GLStateRestorer that forwards to a GLES2Decoder.
  22 class GPU_EXPORT GLStateRestorerImpl : public gfx::GLStateRestorer {
  23  public:
  24    explicit GLStateRestorerImpl(base::WeakPtr<gles2::GLES2Decoder> decoder);
  25    ~GLStateRestorerImpl() override;
  26
  27    bool IsInitialized() override;
  28    void RestoreState(const gfx::GLStateRestorer* prev_state) override;
  29    void RestoreAllTextureUnitBindings() override;
  30    void RestoreActiveTextureUnitBinding(unsigned int target) override;
  31    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_