I have imported this building into UE4 which is made out of multiple objects (wall, windows, etc). There are 2 of these items that render black and I have no idea why.
They are perfectly unwrapped on both UV channel 0 and 1, the light map resolution is also high enough as well (1024).
I even when back to 3Ds Max, reset Xform, and bring it back, still the same thing.
All other objects that have been imported work completly fine, it’s just a couple of them not working fine.
Also, if it makes any difference, the building was made in a BIM software such revit or CAD (i’m not the one who designed it), then imported in 3Ds Max then into unreal.
Also, I’ve tried setting the object as moveable as well, still no luck.
Any ideas what could be causing this?