http://i.imgur.com/GyIYlz0.jpg
As you can see in the photo, I have a blue room. When I try to import this simple mesh in scene, materials are on wrong polygon.
Everything is ok on floor mesh but this mesh. It’s messed up.
Hey BirhanTR,
Be sure you are follow the workflow correctly when establishing a multiple material mesh. There are specific steps, like assigning the material a Material ID, so when you import into the editor, they apply to the correct pieces of geometry.
Depending on what external modeling software you are using, this workflow will vary. We have documentation on how to properly do this in Blender, Maya, and Max.
FBX Material Pipeline
Blender Pipeline
Let me know if you are still having issues with importing your meshes. I will let you know ahead of time, breaking up your mesh into a couple/few more pieces will help you organize and give you greater control with this process.
Cheers,