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// Copyright (c) 2009 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 "base/callback.h"
#include "build/build_config.h"
#include "gfx/size.h"
#include "gpu/command_buffer/service/common_decoder.h"
namespace gpu {
// Forward-declared instead of including gl_context.h, because including glx.h
// causes havok.
class GLContext;
namespace gles2 {
class ContextGroup;
class GLES2Util;
// This class implements the AsyncAPIInterface interface, decoding GLES2
// commands and calling GL.
class GLES2Decoder : public CommonDecoder {
public:
typedef error::Error Error;
// Creates a decoder.
static GLES2Decoder* Create(ContextGroup* group);
virtual ~GLES2Decoder();
bool debug() const {
return debug_;
}
void set_debug(bool debug) {
debug_ = debug;
}
// Initializes the graphics context. Can create an offscreen
// decoder with a frame buffer that can be referenced from the parent.
// Parameters:
// context: the GL context to render to.
// size: the size if the GL context is offscreen.
// parent: the GLES2 decoder that can access this decoder's front buffer
// through a texture ID in its namespace.
// parent_client_texture_id: the texture ID of the front buffer in the
// parent's namespace.
// Returns:
// true if successful.
virtual bool Initialize(GLContext* context,
const gfx::Size& size,
GLES2Decoder* parent,
uint32 parent_client_texture_id) = 0;
// Destroys the graphics context.
virtual void Destroy() = 0;
// Resize an offscreen frame buffer.
virtual void ResizeOffscreenFrameBuffer(const gfx::Size& size) = 0;
// Make this decoder's GL context current.
virtual bool MakeCurrent() = 0;
// Gets a service id by client id.
virtual uint32 GetServiceIdForTesting(uint32 client_id) = 0;
// Gets the GLES2 Util which holds info.
virtual GLES2Util* GetGLES2Util() = 0;
// Gets the associated GLContext.
virtual GLContext* GetGLContext() = 0;
// Sets a callback which is called when a SwapBuffers command is processed.
virtual void SetSwapBuffersCallback(Callback0::Type* callback) = 0;
protected:
explicit GLES2Decoder(ContextGroup* group);
ContextGroup* group_;
private:
bool debug_;
DISALLOW_COPY_AND_ASSIGN(GLES2Decoder);
};
} // namespace gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
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