diguyOsgTextureBufferObject.h

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/****************************************************************************
 * Copyright (c) 2024 MAK Technologies, Inc.
 * All rights reserved.
 ****************************************************************************/

#pragma once

#include <GL/glew.h>

class diguyOsgTextureBufferObject
{
public:
   diguyOsgTextureBufferObject(const unsigned char* pData, size_t sizeInBytes,
      GLenum format,
      GLenum usage
      );

   virtual ~diguyOsgTextureBufferObject();

   // Size in bytes of the texture buffer object
   size_t sizeInBytes(void) const;

   // Upload data to the buffer. size <= size of buffer
   // void copyData(void* pData, size_t sizeInBytes, size_t offsetInBytes);
   void copyData(void* pData, size_t sizeInBytes, size_t offsetInBytes = 0);

   // Format of the texture
   GLenum format(void) const {return myFormat;}

   void bindTexture(void);
   void bindTBO(void);

   // Resize the tbo to a new size
   void resize(size_t sizeInBytes);

private:
   GLuint myTextureBufferObjectID;
   GLuint myTextureID;
   size_t mySizeInBytes;

   GLenum myUsage;
   GLenum myFormat;

   void tearDown(void);
   void reInitialize(const unsigned char* pData);
};