Hello guys, I’m having this problem with my lighting, the light goes through the walls, I’ve tried to put a wall with black material so that the light doesn’t bounce or cross, but even so the light goes through.
Does anyone know what can it be?
This problem occurs in various ways, I don’t know all the answers here, but:
-
Zero thickness meshes. Solution: give the mesh depth like it’s a real wall, double sided material wont help.
-
Static skylight, sometimes also static directional light. Solution: Try both on moveable.
-
Bad lightmap UVs. Take a look at the mesh(es) in the UE mesh editor, there should be material UVs on channel 1 and lightmap UVs on channel 2. The channel 2 UVs should not overlap or stray outside the box. Solution: UE can make pretty decent lightmaps from the material UVs, you just have to fiddle with the details panel to get that to happen ( tickbox ‘generate lightmap UVs’ ), there is also the scale of the UVs
-
Problems importing meshes from an external program. Solution: watch the official ( recent ) Epic vids on workflows from external products. Might be difficult to find but will absolutely be on the Epic youtube channel.
Any use?
1 Like