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// Copyright (c) 2010 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.
#ifndef APP_GFX_GL_GL_CONTEXT_OSMESA_H_
#define APP_GFX_GL_GL_CONTEXT_OSMESA_H_
#pragma once
#include "base/scoped_ptr.h"
#include "gfx/size.h"
#include "app/gfx/gl/gl_context.h"
typedef struct osmesa_context *OSMesaContext;
namespace gfx {
// Encapsulates an OSMesa OpenGL context that uses software rendering.
class OSMesaGLContext : public GLContext {
public:
OSMesaGLContext();
virtual ~OSMesaGLContext();
// Initialize an OSMesa GL context with the default 1 x 1 initial size.
bool Initialize(GLuint format, GLContext* shared_context);
// Implement GLContext.
virtual void Destroy();
virtual bool MakeCurrent();
virtual bool IsCurrent();
virtual bool IsOffscreen();
virtual void SwapBuffers();
virtual gfx::Size GetSize();
virtual void* GetHandle();
// Resize the back buffer, preserving the old content. Does nothing if the
// size is unchanged.
void Resize(const gfx::Size& new_size);
const void* buffer() const {
return buffer_.get();
}
private:
gfx::Size size_;
scoped_array<int32> buffer_;
OSMesaContext context_;
DISALLOW_COPY_AND_ASSIGN(OSMesaGLContext);
};
} // namespace gfx
#endif // APP_GFX_GL_GL_CONTEXT_OSMESA_H_
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