GameBoy Palette Swap Shader

With this shader, you can color in images (or swap the palette) to look like they are displayed on a GameBoy. This means, the pixels behind the filter are being converted to a 2-bit color palette. You can set the color palette inside a new ShaderMaterial.

This is a variant of Ivan Skodje’s Godot Gameboy Shaders(https://github.com/ivanskodje-godotengine/godot-gameboy-shaders). The code for the shader was updated to Godot v3.1.1.

If you need more info on usage, please read the readme at: https://github.com/Krankomat/godot-gameboy-palette-swap