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// Copyright (c) 2011 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 UI_GFX_GL_GL_SURFACE_H_
#define UI_GFX_GL_GL_SURFACE_H_
#pragma once
#include "build/build_config.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/size.h"
namespace gfx {
// Encapsulates a surface that can be rendered to with GL, hiding platform
// specific management.
class GLSurface {
public:
GLSurface() {}
virtual ~GLSurface() {}
// (Re)create the surface. TODO(apatrick): This is an ugly hack to allow the
// EGL surface associated to be recreated without destroying the associated
// context. The implementation of this function for other GLSurface derived
// classes is in a pending changelist.
virtual bool Initialize() { return true; }
// Destroys the surface.
virtual void Destroy() = 0;
// Returns true if this surface is offscreen.
virtual bool IsOffscreen() = 0;
// Swaps front and back buffers. This has no effect for off-screen
// contexts.
virtual bool SwapBuffers() = 0;
// Get the size of the surface.
virtual gfx::Size GetSize() = 0;
// Get the underlying platform specific surface "handle".
virtual void* GetHandle() = 0;
// Returns the internal frame buffer object name if the surface is backed by
// FBO. Otherwise returns 0.
virtual unsigned int GetBackingFrameBufferObject();
private:
DISALLOW_COPY_AND_ASSIGN(GLSurface);
};
} // namespace gfx
#endif // UI_GFX_GL_GL_SURFACE_H_
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