Hi everyone,
I’m having a strange issue with lighting in my Unreal Engine 5 project.
Some of my static meshes appear much darker than others, even though they are using the same material and are placed under the same light source. It seems like they’re not being lit correctly, or they’re not reacting to the lighting at all.
Here’s what I’ve checked so far:
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The meshes are using the same material instance as others that are lit properly
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Lightmap UVs are auto-generated in the mesh import settings
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I’ve tried both static and stationary lights, but the issue remains
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I rebuilt the lighting several times, and there are no errors in the log
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I’ve tried setting the mesh to Movable, and then back to Static, still no change
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I even replaced the mesh with a different one (like a basic cube), and the lighting works fine
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The affected meshes are custom assets imported from Blender (FBX format)
Things I suspect might be wrong:
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There could be an issue with the lightmap UVs from the imported mesh
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Maybe the mesh normals are flipped or broken
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Could there be a setting in the mesh or material that disables lighting or changes shading?
My question is:
What are common reasons that a mesh might not receive lighting properly in Unreal Engine 5, even when it’s set up similarly to others that work?
If anyone has experienced something like this, I’d really appreciate your insights or any tips on how to fix it.
Thanks in advance!