A collection of Godot shaders to generate pixel planets. Try a web version here: https://deep-fold.itch.io/pixel-planet-generator The web version only exposes some options, to use all options (noise generation, lighting, colors, etc.) you have to use the actual shaders.
Godot shader code is GLSL. Big thanks to EnthusiastGuy who made a MonoGame HLSL version of the shaders, see here: https://github.com/EnthusiastGuy/MonoGame-Pixel-Planets