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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#ifndef _FBO_H_
#define _FBO_H_
#include "../api.h"
#include "GLTexture.h"
#ifndef AVG_ENABLE_EGL
#include "PBO.h"
#endif
#include "VertexArray.h"
#include "../base/GLMHelper.h"
#include <boost/shared_ptr.hpp>
#include <vector>
namespace avg {
class AVG_API FBO
{
public:
FBO(const IntPoint& size, PixelFormat pf, unsigned numTextures=1,
unsigned multisampleSamples=1, bool bUsePackedDepthStencil=false,
bool bUseStencil=false, bool bMipmap=false);
virtual ~FBO();
void activate() const;
PixelFormat getPF() const;
unsigned getNumTextures() const;
void copyToDestTexture() const;
BitmapPtr getImage(int i=0) const;
void moveToPBO(int i=0) const;
BitmapPtr getImageFromPBO() const;
GLTexturePtr getTex(int i=0) const;
const IntPoint& getSize() const;
unsigned getID() const;
static bool isFBOSupported();
static bool isMultisampleFBOSupported();
static bool isPackedDepthStencilSupported();
void initCache();
static void deleteCache();
static void checkError(const std::string& sContext);
private:
void init();
void throwMultisampleError();
IntPoint m_Size;
PixelFormat m_PF;
unsigned m_MultisampleSamples;
bool m_bUsePackedDepthStencil;
bool m_bUseStencil;
bool m_bMipmap;
#ifndef AVG_ENABLE_EGL
PBOPtr m_pOutputPBO;
#endif
unsigned m_FBO;
std::vector<GLTexturePtr> m_pTextures;
unsigned m_StencilBuffer;
// Multisample support
unsigned m_ColorBuffer;
unsigned m_OutputFBO;
};
typedef boost::shared_ptr<FBO> FBOPtr;
}
#endif
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