DtCoreGlBuffer.h

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/******************************************************************************
** Copyright (c) 2021 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/

#pragma once

#include <vrvCore/vrvCore.h>

#include <string>

#include <vrvGraphicsUtils/DtBufferType.h>
#include <vrvGraphicsUtils/DtUsage.h>
#include <vrvGraphicsUtils/DtCpuAccess.h>
#include <vrvGraphicsUtils/DtGlBuffer.h>
#include <vrvGraphicsUtils/DtGlBufferMemoryTracker.h>

#include <vrvUtil/DtVirtualBaseClass.h>

namespace makVrv
{
   class DtDe;
   class DT_DLL_VRVCORE DtCoreGlBuffer : public DtGlBuffer
   {
   public:

      friend class DtCoreGlBufferCreator;

      virtual ~DtCoreGlBuffer();
   protected:

      DtCoreGlBuffer(DtDe& de, const char* name, DtBufferType type, DtUsage usage, DtCpuAccess accessType, bool hasStagingBuffer);

   private:
      DtCoreGlBuffer() = delete;
      DtCoreGlBuffer(const DtCoreGlBuffer& other) = delete;
      DtCoreGlBuffer& operator=(const DtCoreGlBuffer& other) = delete;

   protected:
      DtDe& myDe;

   };

   class DtGlBufferMemoryTracker;

   class DT_DLL_VRVCORE DtCoreGlBufferCreator : public DtVirtualBaseClass
   {
   public:
      DtCoreGlBufferCreator(DtDe& de);

      virtual ~DtCoreGlBufferCreator();
   private:
      DtCoreGlBufferCreator(const DtCoreGlBufferCreator& other);
      DtCoreGlBufferCreator& operator=(const DtCoreGlBufferCreator& other);
   public:
      virtual DtGlBuffer* create(const char* name, DtBufferType type, DtUsage usage, DtCpuAccess accessType, bool hasStagingBuffer) const;

      static DtCoreGlBufferCreator& instance(DtDe& de);

      static const std::string& theClassName();

      const DtGlBufferMemoryTracker* tracker(void) const;

   protected:
      DtDe& myDe;

      // we don't know what order the tracker will/should be deleted in relation
      // to the buffers. It can happen out of order (depending on when the creator is deleted)
      // So, just make this static for now
      static DtGlBufferMemoryTracker theTracker;
   };
}