physically based sky issues

[SebLazyWizard]

These issues are present since the initial implementation of the PBS as I stated in this thread;

Physically Based Sky

I’m surprised that there’s no thread dedicated to the new PB-Sky yet, so I’ll go ahead and create one. As of 2019.3, HDRP offers a new sky rendering that is physically based and although it’s still experimental, it looks impressive so far. So let’s start with the stuff that already works fine, before we take a look at some issues and missing features. Pros; The rendering of the sky itself looks really realistic, especially at low sun altitudes the atmospheric scattering really shows off. It…

Unfortunately not much has changed since then.

The main issue is still the inability to achieve proper day/night cycles with realistic light intensities for the sun(128k) and moon(0.33). Especially at dawn/dusk this becomes super obvious as the PBS can’t handle the massive differences in light intensity (in combination with matching auto exposure like +13 to -2);

The remaining sunlight in the atmosphere (when the sun is a few degrees below the horizon) totally blows out the sky with a yellowish blob.

About the fog issue;
The PBS itself already has fog implemented, but is actually only applied to the sky itself.
This is a major flaw of the current implementation, as the atmospheric scattering should apply to any object that is inside that atmosphere aswell. You can kinda fake that behavior with the current fog with it’s max height set to the atmosphere height of the PBS, but it’s all wrong and looks fake ofc.