Is there an example how to render a bitmap through framebuffer and display on /dev/fb0 with GPU acceralted?

I am fresh in GPU and opengl, is there an example which shows how the opengl framebuffer works to render an image(eg a BMP from file or a frame capture from Camera) through opengl frame buffer to a display( the display without destop.or windows)?

Thanks a heard.


Did you ever figure this out? I am also new and want to do my image analysis on a bitmap and not an encoded image.