diguyOsgTextureBufferObject.h

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#pragma once

/****************************************************************************** 
** Copyright (c) 2016 MAK Technologies, Inc. 
** All rights reserved. 
******************************************************************************/ 

#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);
};