DtDepthOfFieldDrawable.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 <vrvCore/DtVirtualBaseClassCreator.h>

#include <vrvGraphicsUtils/DtVector2.h>

#include <osg/Texture>

namespace osg
{
   class Texture2D;
   class State;
}

namespace makVrv
{
   class DtDe;

   struct DtDofParams
   {
      double camNear;
      double camFar;

      bool vrv_useAutofocus;
      bool vrv_useReverseZBuffer;
      float vrv_focalDepth;
      float vrv_focalRange;

      int viewWidth;
      int viewHeight;

      DtDofParams();
   };


   class DtDepthOfFieldDrawable;
   typedef DtVirtualBaseClassCreator<DtDepthOfFieldDrawable> DtDepthOfFieldDrawableCreator;

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

   class DT_DLL_VRVPOSTPROCESSOR DtDepthOfFieldDrawable : public DtPostProcessorDrawable
   {
   public:
      virtual ~DtDepthOfFieldDrawable();
   protected:
      DtDepthOfFieldDrawable(DtDe &de);

      friend DtDepthOfFieldDrawableCreator;
   private:
      DtDepthOfFieldDrawable();

      DtDepthOfFieldDrawable(const DtDepthOfFieldDrawable&);

      DtDepthOfFieldDrawable& operator=(const DtDepthOfFieldDrawable&);

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

      //virtual void releaseGLObjects(osg::State* state = 0) const;

      virtual void setDepthTexture(osg::Texture* texture);

      virtual void setParams(DtDofParams& params);
   protected:
      virtual void createProgramIfNecessary(void) const;

      virtual void cleanupGpuMemory(void);
   protected:
      osg::ref_ptr<osg::Texture> myBaseTexture;
      osg::ref_ptr<osg::Texture> myDepthTexture;
      
      mutable unsigned int myMutableDofProgram;

      DtDofParams myParams;

      mutable int myMutableVrvUseAutofocusLoc;
      mutable int myMutableVrvUseReverseZBufferLoc;
      mutable int myMutableVrvFocalDepthLoc;
      mutable int myMutableVrvFocalRangeLoc;
      mutable int myMutableVrvzNearFarLoc;
      mutable int myMutableVrvFilterTapsLoc;
      mutable int myMutableVrvDepthTexLoc;

      Vector2_32 myVrvFilterTaps[12];

      mutable bool myMutableTapsDirty;
   };


}