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blenderunreal-engine4light

Mesh not reflecting light in unreal engine

I'm working with a photogrametry mesh (.fbx) that I have cleaned up in blender 2.8.

In UE (4.26), when I build the light, the mesh goes dark (as on the pic).

I do have a UV generated in blender. In UE, the mesh has a 256 light map resolution & a light map coordinate index of 1.

Is there something I'm doing wrong?

before building light enter image description here

After building light enter image description here

UV mapping in blender enter image description here

UV channel 0 enter image description here

UV channel 1 (this is what I suspect is the problem but I have no solution) enter image description here

Solution

  • So it turns out I just needed to put 0 as the light map coordinate index value