This is a visualization of octahedral mapping, a cool way to encode spherical coordinates in 2d. This is usually useful for storing things like light probes.
This took like 20 minutes to write, thanks to Odin and Raylib <3
https://fxtwitter.com/jakubtomsu_/status/1722691305573110023?s=20

Here is the code: https://gist.github.com/jakubtomsu/e614bf152a7147c4519149270b9266b6