TIL: Fibonacci lattice sphere sampling.
extremelearning.com.au/how-to-evenl...

Feels like magic! Third column in the picture below:

I think it worked out :)

Not 100% sure the SH is all correct, but quick checks looked promising. Best I add some debug options to the ui so I can easier compare "real-sky" with "SH sky"

Also, really need some shadow casting and anti-aliasing 😊

Said atmosphere is very much in progress, a half-done implementation of Sébastien Hillaire's "A Scalable and Production Ready
Sky and Atmosphere Rendering Technique". Plus some place-holder heightmap

Quick and dirty sphere sampling test. Very happy how quick this is to hack in Python (and @rerun.io , okay I'm obviously biased)
github.com/Wumpf/terrai...

Plan is to use this for computing Spherical Harmonics from sky for my pet project :)