Hello, I have a question regarding Lumen quality on distant mesh.
On a very simple scenario:
- create new “Open World” level in UE 5.6
- increase SM_SkySphere size from default 400x400x400 to 600x600x600
- add a simple plane mesh actor with:
location: 0, -2000000 (20km) , 0
rotation: 90, 0, 0
scale: 10000, 10000, 1
turn off “Cast shadow” for the actor
There is a lot of (jittering) noise observable on the mesh.
With “r.Lumen.DiffuseIndirect.Allow 0” the noise is not observable.
The material of the distant mesh is supposed to be fully lit (i.e. it receives cloud shadows, reacts to sun, has normal maps etc.) with masked blend mode. But due to it’s size and distance the GI can be disabled completely.
Is it possible to disable Lumen indirect lighting selectively on this one mesh? Or maybe limit Lumen up to some distance?
Thank you