How do I get rid of this shadow circle “artifact” that appears with Virtual Shadow Map enabled?
Hi!
Looking into your problem a little bit more, it appears to be caused by your directional light clipmaps. The Virtual Shadow Map clipmaps are a way to display shadow textures over large distances by breaking them down into a series of LODed textures, where the LOD is determined by the distance from the camera.
The clipmap texture resolution scaling is preset and not changeable, but you can change the LOD Bias, so the resolution transition isn’t as noticeable closer to the camera. The default should be 0, if you set your bias to -1 or -1.5 using the console command r.Shadow.Virtual.ResolutionLodBiasDirectional , this should help solve your issue.
More information on this can be found in the “Clipmaps for Directional Light” section of this documentation:
https://dev.epicgames.com/documentation/en-us/unreal-engine/virtual-shadow-maps-in-unreal-engine?application_version=5.0
Hope these help!