Hi everyone,
I imported two identical cube meshes from SketchUp into Unreal Engine 5 using Datasmith. In SketchUp, I grouped a cube, copied it, and mirrored it to face the original. Once imported into UE5, both cubes appeared fine.
However, when I used “Harvest Instances” on the mesh to optimize performance, the mirrored copy turned completely dark or black. It looks like a lighting or shading issue, possibly related to negative scaling from the mirror operation.
Has anyone faced this issue with mirrored geometry?
Is there a way to fix the lighting problem on the mirrored instance after harvesting? Or should I avoid mirroring like this before importing?
Any advice or workflow recommendations would be greatly appreciated!
Thanks!
