> You can use glReadPixels and glReadBuffer save BACK image from OpenGL
> to memory. Converting pixel data to image format is your task. 

I have done it for PPM : 

  let save_ppm s = 
    let o = open_out s in
    let w = Glut.get Glut.WINDOW_WIDTH  in
    let h = Glut.get Glut.WINDOW_HEIGHT in
      Printf.fprintf o "P6\n%d %d\n%d\n" w h 255;
      let w3 = 3*w in
      let r = GlPix.to_raw (GlPix.read 0 0 w (3*h) `rgb `ubyte) in
	for j = h-1 downto 0 do
	  output_string o (Raw.gets_string r (w3*j) w3)
	done;
	close_out o

why not to include this kind of boring function into lablgl(ut) ?
(or at least somewhere in the examples...)

damien

-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners