include/root/TGLFBO.h

0001 // @(#)root/gl:$Id$
0002 // Author: Matevz Tadel, Aug 2009
0003
0004 /*************************************************************************
0005  * Copyright (C) 1995-2007, Rene Brun and Fons Rademakers.               *
0006  * All rights reserved.                                                  *
0007  *                                                                       *
0008  * For the licensing terms see $ROOTSYS/LICENSE.                         *
0009  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
0010  *************************************************************************/
0011
0012 #ifndef ROOT_TGLFBO
0013 #define ROOT_TGLFBO
0014
0015 #include "Rtypes.h"
0016
0017 class TGLFBO
0018 {
0019 private:
0020    TGLFBO(const TGLFBO&) = delete;
0021    TGLFBO& operator=(const TGLFBO&) = delete;
0022
0023 protected:
0024    UInt_t  fFrameBuffer;
0025    UInt_t  fColorTexture;
0026    UInt_t  fDepthBuffer;
0027    UInt_t  fMSFrameBuffer;
0028    UInt_t  fMSColorBuffer;
0029
0030    Int_t   fW, fH, fReqW, fReqH, fMSSamples, fMSCoverageSamples;
0031
0032    Float_t fWScale, fHScale;
0033    Bool_t  fIsRescaled;
0034
0035    static Bool_t fgRescaleToPow2;
0036    static Bool_t fgMultiSampleNAWarned;
0037
0038    void InitStandard();
0039    void InitMultiSample();
0040
0041    UInt_t CreateAndAttachRenderBuffer(Int_t format, Int_t type);
0042    UInt_t CreateAndAttachColorTexture();
0043
0044 public:
0045    TGLFBO();
0046    virtual ~TGLFBO();
0047
0048    void Init(int w, int h, int ms_samples=0);
0049    void Release();
0050
0051    void Bind();
0052    void Unbind();
0053
0054    void BindTexture();
0055    void UnbindTexture();
0056
0057    void SetAsReadBuffer();
0058
0059    Int_t   GetW()    const { return fW; }
0060    Int_t   GetH()    const { return fH; }
0061    Int_t   GetReqW() const { return fReqW; }
0062    Int_t   GetReqH() const { return fReqH; }
0063    Int_t   GetMSSamples()         const { return fMSSamples; }
0064    Int_t   GetMSCoverageSamples() const { return fMSCoverageSamples; }
0065
0066    Float_t GetWScale() const { return fWScale; }
0067    Float_t GetHScale() const { return fHScale; }
0068
0069    Bool_t  GetIsRescaled() const { return fIsRescaled; }
0070
0071    static  Bool_t GetRescaleToPow2();
0072    static  void   SetRescaleToPow2(Bool_t r);
0073
0074    ClassDef(TGLFBO, 0); // Frame-buffer object.
0075 };
0076
0077 #endif