DtGLTextureBufferObject.h

Go to the documentation of this file.

/****************************************************************************** 
** Copyright (c) 2014 MAK Technologies, Inc. 
** All rights reserved. 
******************************************************************************/ 

#pragma once

#include "DtGraphicsUtilsPreReqs.h"
#include "DtDataFormat.h"
#include "DtCommonTypes.h"
#include "DtUsage.h"
#include "DtCPUAccess.h"

#include <GL/glew.h>

namespace makVrv {

   class Device;

   class DT_DLL_VRVGRAPHICSUTILS DtGLTextureBufferObject
   {
   public:
      DtGLTextureBufferObject(Device* pDevice
         , const byte* pData, size_t sizeInBytes
         , DtDataFormat format
         , DtUsage usage
         , DtCpuAccess cpuAccess);

      virtual ~DtGLTextureBufferObject();

      size_t sizeInBytes(void) const;

      void copyData(void* pData, size_t sizeInBytes, size_t offsetInBytes = 0);

      void copyDataMapped(void* pData, size_t sizeInBytes, size_t offsetInBytes = 0);

      DtDataFormat format(void) const {return myFormat;}

      void bindTexture(void);
      void bindTBO(void);
      void* mapTBO(void);
      void unmapTBO(void);

      void resize(size_t sizeInBytes);
   private:
      GLuint myTextureBufferObjectID;
      GLuint myTextureID;
      size_t mySizeInBytes;

      DtUsage myUsage;
      DtCpuAccess myCPUAccess;
      DtDataFormat myFormat;

      GLenum myGLUsage;
      GLenum myGLInternalFormat;

      void tearDown(void);
      void reInitialize(const byte* pData);
   };
}