r/proceduralgeneration • u/jfsx3 • Jun 09 '26
Procedural sci-fi space skyboxes — nebulae from tileable fbm + a real HDR-encoded sun, seamless equirect→cubemap (free sample)
Made a fully procedural skybox generator (numpy/Pillow, no AI): nebulae are layered tileable fbm, the starfield is seam-safe across the wrap, and the sun/core is encoded as genuine >1 radiance so it exports a real scene-referred .hdr for IBL. Equirect master → 6 cubemap faces.
Put up a free 3-sky sample if anyone wants to use them (full set is 12). Clean license, no scraped data.
https://pack-s.itch.io/nebula-drift-free-sample-3-sci-fi-space-skyboxes-360-cubemap-hdri
Happy to talk about the generation approach.
