Got a weird viewport shadowing/artefact problem

chrisradsby

No normal map applied, it's real-time in the viewport and it has proper lightmap UVs set up.

It's some kind of weird artifacting going on a flat surface when the sun is at an Angle. Does anybody know how to fix this? :poly142:

I've got UDK July 2012.

JonathanLambert

Is it your light maps mipping out too soon?

chrisradsby

JonathanLambert wrote: »

Is it your light maps mipping out too soon?

It's not related to the lightmaps at all actually. =/

osman

Hey, some questions/thoughts:

Have you built lightmaps in that screenshot?
Is it only on that surface or on all surfaces facing that direction?

Is your sun a Dominant Directional light?
If so, try tweaking the settings under 'Cascaded Shadow Maps', it usually helps over here.

Simmo

This looks as if lighting isn't built.. Extreme angles with directional dominants will do this with unbuilt lighting, but it should go away once you've built.

Minato

Seems to be shadow banding,your Dominant light's direction is probably at a near parallel angle with those surfaces...

Ace-Angel

Yep, yep, 80-90* angles cause these issues. Tilt below 80 and it should be all fine.