Thanks Biker, I already added it to my notes, this will be written huge block letters To illustrate it better:
This is what you typically do before export. Notice the actual pivot (big arrows) aligned with the move gizmo in 3dsmax. This is what you should not be doing, even though you do that for all other game engines:
If you export your mesh and load your map, the lightning will look like this:
Don't mind the mesh distortion, I added it to see whether subdivisions help anything (they make it even worse). There are two lights here, btw. and it looks like there are many more. And see this weird stuff at the top?
Now, this is mesh with a pivot that didn't have any rotation/scene alignment. As you can see, axes are not aligned. And for idtech4 this is alright. In other game engines this piece would be imported horizontally.
And finally, everything is works as it should. The disaster has been averted
Edited by Judith, 15 April 2017 - 05:15 PM.