DtIndirectVaoManager.h

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/*****************************************************************************
* Copyright (c) 2022 MAK Technologies, Inc.
* All rights reserved.
*****************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvUtil/DtVirtualBaseClass.h>
#include <vrvUtil/DtSignalConnectionManager.h>

#include <vrvGraphicsUtils/DtGlObjects.h>

#include <unordered_map>

namespace makVrv
{
   class DtDe;
   class DtOsgToGlContextTracker;
   class DtIndirectLog;
   
   class DtIndirectVaoManager : public DtVirtualBaseClass
   {
   public:
      static DtIndirectVaoManager& instance(DtDe& de);

      virtual ~DtIndirectVaoManager();
   protected:
      DtIndirectVaoManager(DtDe& de);

   private:
      DtIndirectVaoManager() = delete;
      DtIndirectVaoManager(const DtIndirectVaoManager&) = delete;
      DtIndirectVaoManager& operator=(const DtIndirectVaoManager&) = delete;
   public:

      virtual unsigned int vao(bool rerecord);

   protected:
      virtual void recordVAO(unsigned int vao);

      virtual void slot_contextAboutToBeDestroyed(const void* glContext);

      virtual void deleteVao(const void* glContext);

   protected:
      DtDe& myDe;

      DtSignalConnectionManager myConnections;

      std::unordered_map<const void*, DtGlVaoAndContext> myGlContextToVao;

      DtOsgToGlContextTracker& myOsgToGlContextTracker;

      DtIndirectLog& myIndirectLog;
   };
}