This is a simple, procedural planet generator based on different, layered noise functions with dynamic LOD (terrain chunks), written in GDScript.

• this amazing tutorial for creating procedurally generated planets by Sebastian Lague
• atmosphere shader by Dimas Leenman, shared under the MIT license, slightly adapted

• optimize TerrainFace generation, find hotspots/bottlenecks, prioritize threads, limit max. number of threads
• multiple noise maps: one for height, one for biomes and/or one for colors, etc.
• preview texture for NoiseGenerator resource
• fix seams between TerrainFaces
• cloud layer around planets
• larger scale to allow for finer detail, needs adjustment or replacement of atmosphere shader
• better terrain shaders with textures, noise border instead of straight one
• adjustable sea level which will adjust the color gradient and the water mesh
• vegetation, rocks, etc.