Lights Seen through Walls with Volumetric Fog

Hi!

I’ve been messing around with the HDRP for a few days and I’m trying to implement it in a little demo project.

Whenever I use the volumetric fog, however, the player ends up being able to see some of the lights through walls (both point and spotlights shown in the picture).

I have searched for a solution off and on for the past few days, but still no luck. Is there any way to prevent this from happening?

Report the bug

still have this issue?

It’s not really a bug, it’s a limitation in the volumetric approach. A general ‘fix’ would have a lot of performance implications.

The simple solution is to turn shadows on for the lights. A more performant solution is to bake cookies for the lights, and/or set their distance to a lower radius.

It’s a constant pain for a lighting artist since shadows are expensive and volumetrics are pretty, but it’s a necessary thing to work round by careful light placement and tuning.