Hello everyone. When lighting interiors I come across 2 types of shadow flicker. I’ve been unable to fix it so far. I’m using lumen and can’t use path trace. Any ideas on how to fix this? The problems go away when rendering the scene in sequencer. But that’s useless since I want to use the scene in realtime.
In the first video you can see one of the the flickers on the small wall in the middle of the screen facing toward the camera.
It is Lumen. First example doesn’t count, as it’s ‘in editor’, so you’re running a simplified setup there.
You can get rid of the red errors with the console command
r.Streaming.PoolSize 0
and by setting your lights to moveable.
As for the Lumen, that’s about as good as it gets in realtime, I think.
There are plenty of ways to tune it, though
My lights are movable. It turns out changing AA in project setting makes it a lot better. Specifically TAA. The other options aren’t as good. Is there a way to increase the amount?
r.TemporalAASamples command doesn’t change anything.
Apparently, enabling “cast raytraced shadows” and increasing “sample per pixel” alongside TAA or other AA options will reduce the flicker and issues significantly.
No, it’s not Lumen. When using Lumen, this effect disappears. This problem is in DFAO
Actually it’s lumen and it’s about how it calculates soft shadows in real time.
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