help importing .fbx

Unity Engine
1

I have a problem whem importing a .fbx file into Unity… sometimes, part of the mesh will not be there… one just can’t see it. Usually, this is the part of the mesh that is facing you. You can see the faces that should be hidden, and you can’t see the faces that aren’t hidden. This happens sporadically from file to file, often only in part of the mesh. I am creating my .fbx files in Blender, it’s the only 3d modeling software I have. Here’s some screenshots:

In Blender:

Rendered with Blender:

In Unity:

I think it might have somethign to do with the normals… does anyone know how to change them? Crtl+N doesn’t seem to do much in Blender…

I also told unity to calculate the normals… doesn’t make a difference.

2

Your problem is winding order - look at the engine with the problem, you can see the interior faces. This shows the engine is “inside-out” so you are getting the wrong faces after back face culling.

If you flip the direction of the bad faces in blender, they’ll import correctly.

There’s probably some way to disable back face culling in Unity as well, but I’m afraid I don’t know what it is.

3

I’ve messed around wiht it in Blender some… It looks like that’s my problem, that the faces that are showing up incorrectly are facing the wrong way. I’m oging about fixing it now… I hope.