Shadow artifacts from Stationary Directional Light
I experience some shadowing artifacts in my scene right after stopping Play In Editor session as shown on the attached image:
Scene setup is following:
Each time I restart PIE session I get same artifact pattern.
If I disable either Dynamic Shadows or Directional Lights under Show -> Lighting Components this artifact disappears.
If I change light type to Movable – artifact disappears.
Another thing that might be relevant, is that the project first was created targeting Mobile and then switched to PC / Console after some time.
After some experiments I figured out that theese shadows are somehow affected by Indirect Lighting Cache. Removing all indirect samples from the scene leads to almost black shadows.
This happens even with 'Dynamic Shadow Distance' of the Light set to zero. Distance Field Shadows are also disabled. So no dynamic shadows in the scene at all.
I grabbed your project and tested the issue on my end and was able to confirm what you are seeing. The issue here is with the non-uniform scaling of the cylinder static mesh. If you re-scale the cylinder to its original shape, the issue goes away. This is currently a known and reported issue we we are working to have this resolved.
As a suggested workaround, you could always go into an external modeling program like 3ds Max or Blender [Free] and model the shape you want and import it into the engine. You could also create an additive Cylinder BSP and convert it into a static mesh. Both options should give you clean results without the issue you are experiencing.
If you have any other questions or need additional help let me know.
answered Apr 21 '15 at 04:00 PM
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