I already created a level including all the Shaders: http://files.filefront.com/Sylex_PPE_Level/;6654311;;/fileinfo.html

Move with wasd, turn cbabe around with your mouse. If you want to change the cameraposition hold e pressed and move your mouse.

To activate the Postprocessing, press f1 for downsample and than any key from f2 to f12, from 1 to 0 and from z(y) to p. You can combine up to three sometimes even more but if you activate to much you have to restart the level. If you want to reset the postprocessing press r.

Many of the shaders are buggy or they are looking very similar.
You´ll find a picture for each effect here: http://gallery.filefront.com/SilentSoftMaste//431640/

I really like the combination of f1-f3-f2...