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Lighting not correct for some objects

Development Discussion Rendering
#1

In my simple scene, I am getting some odd lighting results along polygon seams, seen in the following image:

What’s the deal? The mesh I have under these rocks that serves as a terrain doesn’t have any shadowing errors.

I tried changing the lighting quality all the way up to high, and this problem still persists. For reference I’m using the example fps project with I believe everything default except the existing objects removed.

#2
  1. do you have a lightmass importance volume in your level?
  2. do you get any errors/warnings when you build the light?
#3

Your lightmap resolution is probably too low

#4

First of all, make sure that you have proper lightmaps :wink:

#5

Those artifacts look like a combination of too-low res of lightmaps + UV charts too close together in your lightmap UV. You need a few texels between them to avoid leaking like this.