This unofficial project ports back most of Sonic Unleashed's day levels from the Xbox 360 version into Sonic Generations on PC. It also includes any improvements that are deemed as necessary to accomodate to the better control scheme, higher resolution graphics, and a much smoother framerate.
Korama and Lobotomy dig into Generations and find quite a ground-breaking discovery.
Posted by Dario_ff on Aug 3rd, 2012
Thanks to the work of Korama, tech member over at Sonic Retro, and some additional help on finding the old shader files from Lobotomy, a new renderer is discovered, totally unused on the retail version of the game! It's still a bit too broken to be used, but it can do effects like directional shadows, better color correction, higher quality motion blur, working ice shaders, and even godrays!
Skip to about 1 minute into the video to see Cool Edge with this new renderer. Notice the dark shadows are just a bug with the renderer, and hopefully it can be fixed.
The use of this renderer won't be mandatory for the mod users, but it's still a possibility worth looking at. Be sure to check out the channels of the modders who made this possible as well!