TGLFBO.h

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// @(#)root/gl:$Id$
// Author: Matevz Tadel, Aug 2009
 
/*************************************************************************
 * Copyright (C) 1995-2007, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#ifndef ROOT_TGLFBO
#define ROOT_TGLFBO
 
#include "Rtypes.h"
 
class TGLFBO
{
private:
   TGLFBO(const TGLFBO&) = delete;
   TGLFBO& operator=(const TGLFBO&) = delete;
 
protected:
   UInt_t  fFrameBuffer;
   UInt_t  fColorTexture;
   UInt_t  fDepthBuffer;
   UInt_t  fMSFrameBuffer;
   UInt_t  fMSColorBuffer;
 
   Int_t   fW, fH, fReqW, fReqH, fMSSamples, fMSCoverageSamples;
 
   Float_t fWScale, fHScale;
   Bool_t  fIsRescaled;
 
   static Bool_t fgRescaleToPow2;
   static Bool_t fgMultiSampleNAWarned;
 
   void InitStandard();
   void InitMultiSample();
 
   UInt_t CreateAndAttachRenderBuffer(Int_t format, Int_t type);
   UInt_t CreateAndAttachColorTexture();
 
public:
   TGLFBO();
   virtual ~TGLFBO();
 
   void Init(int w, int h, int ms_samples=0);
   void Release();
 
   void Bind();
   void Unbind();
 
   void BindTexture();
   void UnbindTexture();
 
   void SetAsReadBuffer();
 
   Int_t   GetW()    const { return fW; }
   Int_t   GetH()    const { return fH; }
   Int_t   GetReqW() const { return fReqW; }
   Int_t   GetReqH() const { return fReqH; }
   Int_t   GetMSSamples()         const { return fMSSamples; }
   Int_t   GetMSCoverageSamples() const { return fMSCoverageSamples; }
 
   Float_t GetWScale() const { return fWScale; }
   Float_t GetHScale() const { return fHScale; }
 
   Bool_t  GetIsRescaled() const { return fIsRescaled; }
 
   static  Bool_t GetRescaleToPow2();
   static  void   SetRescaleToPow2(Bool_t r);
 
   ClassDef(TGLFBO, 0); // Frame-buffer object.
};
 
#endif