DtReverseDepthBufferDrawable.h

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

#pragma once


#include <vrvPostProcessor/vrvPostProcessor.h>
#include <vrvPostProcessor/DtPostProcessorDrawable.h>

#include <vrvGraphicsUtils/DtVector2.h>

#include <vrvCore/DtVirtualBaseClassCreator.h>

#include <string>

namespace osg
{
   class RenderInfo;
}

namespace makVrv
{
   class DtDe;
   class DtGlProgram;


   class DtReverseDepthBufferDrawable;
   typedef DtVirtualBaseClassCreator<DtReverseDepthBufferDrawable> DtReverseDepthBufferDrawableCreator;

   template <>
   inline const char* creatorTypeName<DtReverseDepthBufferDrawable>(void) { return "DtReverseDepthBufferDrawableCreator"; }

   class DT_DLL_VRVPOSTPROCESSOR DtReverseDepthBufferDrawable : public DtPostProcessorDrawable
   {
   public:
      virtual ~DtReverseDepthBufferDrawable();

   protected:
      DtReverseDepthBufferDrawable(DtDe &de);

      friend DtReverseDepthBufferDrawableCreator;

   private:
      DtReverseDepthBufferDrawable();

      DtReverseDepthBufferDrawable(const DtReverseDepthBufferDrawable&);

      DtReverseDepthBufferDrawable& operator=(const DtReverseDepthBufferDrawable&);

   public:

      virtual void drawImplementation(osg::RenderInfo& renderInfo) const;

      //virtual void releaseGLObjects(osg::State* state = 0) const;
   protected:
      virtual void createProgramIfNecessary(const std::string& path, const std::string& prefixName) const;

      virtual void cleanupGpuMemory(void);
   protected:
      mutable DtGlProgram* myMutableProgram;
   };

  
}