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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file contains the GLStateRestorerImpl class.
#ifndef GPU_COMMAND_BUFFER_SERVICE_GL_STATE_RESTORER_IMPL_H_
#define GPU_COMMAND_BUFFER_SERVICE_GL_STATE_RESTORER_IMPL_H_
#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
#include "gpu/gpu_gles2_export.h"
#include "ui/gl/gl_state_restorer.h"
namespace gpu {
class GLContextVirtualDelegate;
namespace gles2 {
struct ContextState;
}
// This class implements a GLStateRestorer that forwards to a DecoderContext.
class GPU_GLES2_EXPORT GLStateRestorerImpl : public gl::GLStateRestorer {
public:
explicit GLStateRestorerImpl(
base::WeakPtr<GLContextVirtualDelegate> delegate);
GLStateRestorerImpl(const GLStateRestorerImpl&) = delete;
GLStateRestorerImpl& operator=(const GLStateRestorerImpl&) = delete;
~GLStateRestorerImpl() override;
bool IsInitialized() override;
void RestoreState(const gl::GLStateRestorer* prev_state) override;
void RestoreAllTextureUnitAndSamplerBindings() override;
void RestoreActiveTexture() override;
void RestoreActiveTextureUnitBinding(unsigned int target) override;
void RestoreAllExternalTextureBindingsIfNeeded() override;
void RestoreFramebufferBindings() override;
void RestoreProgramBindings() override;
void RestoreBufferBinding(unsigned int target) override;
void RestoreVertexAttribArray(unsigned int index) override;
void PauseQueries() override;
void ResumeQueries() override;
private:
const gles2::ContextState* GetContextState() const;
base::WeakPtr<GLContextVirtualDelegate> delegate_;
};
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_GL_STATE_RESTORER_IMPL_H_
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