DtSubmitVarjoViewCallback.h

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

#pragma once



#include "vrvVirtualReality/vrvVirtualReality.h"
#include "vrvVirtualReality/DtSubmitViewCallback.h"

#include <vrvGraphicsUtils/DtGlShader.h>

#include <osg/RenderInfo>

#include <Varjo.h>
#include <Varjo_events.h>
#include <Varjo_layers.h>
#include <Varjo_mr.h>
#include <Varjo_gl.h>


namespace makVrv
{
   class DtVarjoProvider;

   class DT_DLL_VRVVR DtSubmitVarjoViewCallback : public DtSubmitViewCallback
   {
   public:
      DtSubmitVarjoViewCallback(DtDe& de, DtVirtualRealityPostProcessor& pp, DtVirtualRealityDriver& driver, vrvVirtualReality::DtEye eye);

      virtual ~DtSubmitVarjoViewCallback();

   private:
      DtSubmitVarjoViewCallback();

      DtSubmitVarjoViewCallback(const DtSubmitVarjoViewCallback& orig);

      DtSubmitVarjoViewCallback& operator=(const DtSubmitVarjoViewCallback&);

   protected:
      virtual void submit(osg::RenderInfo& renderInfo) const;

      virtual bool initSwapChain(osg::RenderInfo& renderInfo) const;

      virtual void initFillProgram(bool useArrays) const;

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

   protected:

      DtVarjoProvider* myProvider;
      varjo_Session* myVarjoSession;

      int myWidth;
      int myHeight;

      bool myUseDepthLayers;
      varjo_TextureFormat myDepthFormat;

      mutable bool mySwapChainsInitialized;
      mutable varjo_SwapChainConfig2 mySwapChainConfig;
      mutable varjo_SwapChainConfig2 myDepthSwapChainConfig;
      mutable varjo_SwapChain* myColorSwapChain;
      mutable varjo_SwapChain* myDepthSwapChain;
      mutable int mySwapChainLength;

      mutable std::vector<GLuint> mySwapChainFbos;

      mutable DtGlProgram* mySwapChainColorCopyProgram;

      mutable GLint myLayerUniformLocation;

      mutable osg::ref_ptr<osg::StateSet> mySwapChainFillStateSet;

      mutable std::vector<GLuint> myDepthSwapChainFbos;

      mutable std::vector<GLuint> myChannelDepthFbos;

   };
}