Pixelate entire canvas

Hi,

What I would do would be to draw the scene into an ofFbo (offscreen canvas), then draw that flat image to the stage with a shader like this:
http://www.geeks3d.com/20101029/shader-library-pixelation-post-processing-effect-glsl/

You could draw any way you want into the ofFbo, using your lighting effects, etc, the pixelation effect would just be working on the 2D result.

Best,
Andreas