DtBlitOsgToGlTexture.h

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/****************************************************************************** 
** Copyright (c) 2020 MAK Technologies, Inc. 
** All rights reserved. 
******************************************************************************/ 


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvGraphicsUtils/DtGlRenderToTexture.h>

#include <osg/Texture2D>

namespace makVrv
{
   class DtGlProgram;
   class DtGlScreenQuad;
   class DtDe;

   class DT_DLL_VRVOSG DtBlitOsgToGlTexture
   {
   private: 
      DtBlitOsgToGlTexture();

      DtBlitOsgToGlTexture(const DtBlitOsgToGlTexture&);
      
      DtBlitOsgToGlTexture& operator=(const DtBlitOsgToGlTexture&);

   public:
      DtBlitOsgToGlTexture(DtDe& de, int width, int height, DtGlImageType internalFormat = RGBA8, int depth = 1, bool useMultiView = false);

      DtBlitOsgToGlTexture(DtDe& de, unsigned int id);

      virtual ~DtBlitOsgToGlTexture();

      virtual unsigned int id() const;

      virtual void blit(osg::State* state, osg::Texture* source) const;

   protected:
      void createShader();

      DtGlProgram* myShader;
      DtGlRenderTexture* myRtt;
      DtGlScreenQuad* myScreenQuad;

      DtGlImageType myInternalFormat;
      unsigned int myWidth;
      unsigned int myHeight;
      unsigned int myDepth;
      bool myUseMultiView;

      DtDe& myDe;
   };
}