http://www.2shared.com/file/bvGHhbQr/do ... lters.html
Dolphin emu is under the GPL v2. http://code.google.com/p/dolphin-emu/
Dolphin uses Cg shaders for fullscreen filters.
I'm still a Cg noob, but I managed to get most of the Dolphin shaders to work with Panda.
Most of the shaders aren't that great. Some of the more interesting ones like "nightvision", "sketchy" and "auto-toon" don't work.
Some of the filters are shown in this video: https://www.youtube.com/watch?v=89JJ0U5Ld3g