Shading breakdown of a simple "painting" effect I created for a Unity project that makes the 3D scenario gain color progressively as the characters shoot paint bullets at each other.

This is not an in-depth tutorial, just an overall look at how it's made.

A tutorial on how to write a simple shader in Unity that renders any mesh from both sides while being correctly lit and shadowed by Unity's Standard Lighting system.

There's also a link to the complete shader ( improved ) freely available.