- (void)attachBufferToTexture:(uint8_t*)buffer inContext:(CGLContextObj)context{

    CGLSetCurrentContext(context);

    if (buffer != nil) {

        if (_usePBO == YES) {

            glEnable(GL_TEXTURE_RECTANGLE_ARB);

            glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, _pbo[0]);
            glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, movieWidth * movieHeight * [_pixelType byteCount], 0, GL_STREAM_DRAW_ARB);
            GLubyte* ptr = (GLubyte*)glMapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, GL_WRITE_ONLY_ARB);
            if (ptr) {
                GLubyte * data = (GLubyte *)buffer;
                memcpy(ptr, data, movieWidth * movieHeight * [_pixelType byteCount]);
                glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB);
            }

            glBindTexture(GL_TEXTURE_2D, _surfaceTexture);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

            // copy pixels from PBO to texture object && Use offset instead of pointer  see the (zero) !!!!!!
            glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, movieWidth, movieHeight, [_pixelType format], [_pixelType type], 0);

            glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
            glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
            glDisable(GL_TEXTURE_RECTANGLE_ARB);


        } else {

            glEnable(GL_TEXTURE_RECTANGLE_ARB);
            glBindTexture(GL_TEXTURE_RECTANGLE_ARB, _surfaceTexture);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
            GLubyte * data = (GLubyte *)buffer;
            glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, [_pixelType internalFormat], movieWidth, movieHeight, 0, [_pixelType format], [_pixelType type], data);
            glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
            glDisable(GL_TEXTURE_RECTANGLE_ARB);

        }

    }
}