Textures have random dark parts?

[MessyMasyn]

Details:

• I’m on Unreal Engine 5.1.1
• Lumen and Nanite are disabled as part of the required Forward Renderer
• Model was exported from Blender as an fbx file

My lighting:

You can best see my problem here:

I thought the light would look consistent, but there are dark parts on the textures despite all of it being hit by the directional light.

[3dRaven]

You might have bad lightmap UVs. Try regenerating them.

Generating Lightmap UVs

You will need to re-bake the lighting once the uvs are regenerated.

[MessyMasyn]

I do think it does has something to do with the UVs because when I look at the UVs there are lots of red lines, and after investigation it appears my UVs are out of some sort of box? If you can, could you tell me how to shift the textures back into the ‘box’? I appreciate that this might be a complex question, and I won’t hold it against you for not knowing how to resolve this. Thanks!!

[MessyMasyn]

I forgot to mention that when I apply changes to the UV it doesn’t change at all.

[3dRaven]

the lighting uv map is not on channel 0 (the main uv slot). I haven’t done model work in a while but I think it was on channel 2 where the lighting uv’s are stored. (The documentation should mention this)

[MessyMasyn]

It wasn’t the lightmaps at all… I imported the blender model shaded smooth. All I had to do was shade it flat and it’s completelyyyy fixed.