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

actually a better idea might be to blur the mask target from which the SDF is generated - that way the outlines should get rounder as they are on the reference

I wonder if it gets closer when you slightly blur the SDF, maybe it gets closer then? 🤔

Unless Grace answers here directly you could always try attaching RenderDoc to find out how it was done :)