DtIndirectGlTextureResidencyManager.h

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


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

#include <vrvUtil/DtVirtualBaseClass.h>

namespace makVrv
{
   class DtDe;

   class DtGlTextureResidencyManager;

   class DT_DLL_VRVOSG DtIndirectGlTextureResidencyManager : public DtVirtualBaseClass
   {
   public:
      static DtIndirectGlTextureResidencyManager& instance(DtDe& de);

      virtual ~DtIndirectGlTextureResidencyManager();

      DtIndirectGlTextureResidencyManager() = delete;
      DtIndirectGlTextureResidencyManager& operator=(const DtIndirectGlTextureResidencyManager& rhs) = delete;
      DtIndirectGlTextureResidencyManager(const DtIndirectGlTextureResidencyManager& rhs) = delete;

   public:
      virtual void makeResidentIfNecessary(void* gContext, GLuint textureID);

      virtual bool makeNonResidentIfNecessary(void* gContext, GLuint textureID, bool canDelete);

      virtual void deletingTexture(GLuint textureID);

      virtual bool ensureTextureIsResident(GLuint textureID, GLuint64 textureAddress);

      virtual GLuint64 gpuTextureAddress(GLuint textureID) const;

      virtual bool isTexture(GLuint textureID) const;

      virtual DtGlTextureResidencyManager* manager(void);

   protected:
      DtIndirectGlTextureResidencyManager(DtDe& de);

      static void registerInstance(DtIndirectGlTextureResidencyManager* manager, DtDe& de);

      static DtIndirectGlTextureResidencyManager* findInstance(DtDe& de);
   protected:
      DtDe& myDe;

      DtGlTextureResidencyManager* myGlTextureResidencyManager;
   };

}