DtIndirectTextureProcessor.h

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/******************************************************************************
** Copyright (c) 2018 VT-MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <string>
#include <vrvOsg/DtIndirectGeometryTextures.h>

namespace makVrv
{
   class DT_DLL_VRVOSG DtIndirectTextureProcessor
   {
   public:      
      virtual void launchTextureLoadsIfNecessary(void);
      virtual void collectTexturesToLoad(const VectorOsgTextures& newTexturesFound);
      virtual bool collectCompiledTextures(osg::RenderInfo& renderInfo);

   protected:
      //only the registrar can create these for now
      friend class DtIndirectGeometryRegistrar;

      DtIndirectTextureProcessor();

      virtual ~DtIndirectTextureProcessor();

      // internal
      virtual void collectTexturesToLoad(const DtIndirectGeometryTextures& osgGeometryTextures);
      virtual void collectTexturesToLoad(const osg::ref_ptr<osg::Texture>& texture);

   protected:

      typedef std::set<osg::ref_ptr<osg::Texture> > SetTextures;

      SetTextures myTexturesToLoad;
      SetTextures myTexturesLoading;
      SetTextures myTexturesLoaded;

      typedef std::set<int> SetTextureUnits;
      SetTextureUnits mySetTextureUnitsToFree;

   private:
      bool myTexturesDirtyThisFrame;
      unsigned int myLastFrameNumber;
   };

}