Cel Shader

This is a cel shader that will ultimately be used in a source build of Unreal Engine. I've used Three.js here for prototyping as the iteration speeds are much faster, while still providing a comparable (at least at a basic technical level) rendering environment.

The example below shows a comparison between the cel shader I created and the MeshToonMaterial included with Three.js. You can see a greater level of control with specular highlights as well as different banding depending on the light source.

Source code available here.