DtIndirectGlTextureObject.h

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/******************************************************************************
** Copyright (c) 2023 VT-MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once
#include <vrvOsg/vrvOsg.h>

#include <set>
#include <unordered_set>

#include <boost/thread/mutex.hpp>

#include <thread>

namespace makVrv
{
   class DtDe;

   class DtIndirectGlTextureObjectManager;
   class DtIndirectGlTextureObjectTracker;
   class DtOsgToGlContextTracker;
   class DtIndirectLog;

   class DtGpuCulling;

   class DtIndirectGlTextureObject
   {
   public:
      DtIndirectGlTextureObject(DtDe& de, unsigned int textureId);

      virtual ~DtIndirectGlTextureObject();

      DtIndirectGlTextureObject() = delete;
      DtIndirectGlTextureObject(DtIndirectGlTextureObject& rhs) = delete;
      DtIndirectGlTextureObject& operator=(DtIndirectGlTextureObject& rhs) = delete;

   public:
      virtual bool isResident(const void* glContext) const;

      virtual void makeResident();

      virtual void makeNonResident();

      virtual int numOfContextsResidentIn(void) const;

      virtual uint64_t textureAddress(void) const;

      virtual void addGpuCullingUser(const DtGpuCulling* culling);

      virtual void removeGpuCullingUser(const DtGpuCulling* culling);

      virtual unsigned int textureId(void) const;

      virtual int incrementNumUsers();

      virtual int decrementNumUsers();

   protected:
      unsigned int myGlTextureId; 

      std::uint64_t myTextureAddress;
      std::string myTextureName;

      std::unordered_set<const void*> myContextsInWhichResident;

      std::unordered_set<const DtGpuCulling*> myUsers;
      boost::mutex myUserMutex;

      DtIndirectGlTextureObjectManager& myParent;
      DtIndirectGlTextureObjectTracker& myIndirectGlTextureObjectTracker;
      DtIndirectLog& myIndirectLog;
      
      DtDe& myDe;

      std::atomic<int> myNumUsers;

      static std::thread::id theMainThreadId;
   };
}