Simple material shader with added noise to fix ugly banding effects. To be used with GLES2 renderer that does not support full-screen debanding. Made for Godot 3.2.x.
Copy the debandingmaterial.shader -file to your project, create a new ShaderMaterial and load the file into it.
This is basically a SpatialMaterial converted to ShaderMaterial with some unnecessary features removed and debanding added. You can also copy-paste the debanding part fairly easily to your existing shader.
MIT license.
This shader was initially made for use in Polychoron game project.