This demo shows a basic setup for using the 3D pixel art outline/highlight shaders I made.
Note that the shaders only work as intended when using a low game resolution. If you want to have a higher resolution UI you should render the "game" part inside a sub-viewport and apply the texture to a sprite. If you want to pixelize a high-resolution render you'll have to use something else, though this shader could be combined with a pixelization shader. The shader is meant for the Forward+ renderer.
Before and after. Shader in screenshot is a previous iteration, current one is cleaner.
Inspired by this shader Kody King.
The shader can be used as both a post-processing and object shader. It may cause bugs with transparency, I recommend using it on specific objects for finer control.
Far
property or your DirectionalLight3D's Split 1
property.MIT, you can use & modify it however you like.
If you use the effect in a game I'd love to see it!