Sonic Generations PC - Cel Shaders Experiment

A fun experiment I did yesterday of writing a custom shader from scratch and overriding all materials with it. Consider this an example of doing completely custom materials as well with enough effort, although it's limited to what the game's rendering pipeline gives you. NOTE: This is NOT a post-processing effect in the way tools such as ENB work, this completely overrides the way the game actually renders, and it's used just like any other mod for the game. No D3D injectors or such were used, so getting w