Skylight Occlusion Volume

It seems that every now and then people interested in open world games run into woes related to Skylight and interiors. Namely, with a Skylight in place, it’s impossible to make an interior dark, so any sort of caves are out of the question. You obviously can’t turn off the Skylight when inside as that would look like the sky “turned off” suddenly, and looking back outside will make the outside appear dark as well. Myself and others have hacked together some half-working material / post process solutions but nothing really satisfactory.

Would it be possible to have some sort of Skylight Occlusion volume that would mask out Skylight in a certain area?

Best regards,
Damir H.

I second this