DtPixelBufferObject.h

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

#pragma once

#include <vrvGraphics/vrvGraphics.h>

namespace makVrv
{
   class DT_DLL_VRVGRAPHICS DtPixelBufferObject
   {
   public:
      DtPixelBufferObject();

      virtual ~DtPixelBufferObject();

      DtPixelBufferObject(const DtPixelBufferObject& rhs) = delete;

      DtPixelBufferObject& operator=(const DtPixelBufferObject& rhs) = delete;
   public:
      virtual void downloadFromTexture(unsigned int texture, int w, int h);

      virtual void getData(void* data);

      virtual unsigned int bufferSize() const;

      virtual void setupPixelBufferObjects( int numBuffers );

   protected:
      struct PboAndSize
      {
         unsigned int pbo = 0;
         unsigned int size = 0;
      };
      std::vector<PboAndSize> myPbos;

      std::vector<GLsync> myFences;

      int myWriteIndex;
      int myReadIndex;
   };
}