I’ve been trying a lot to fix this problem but it seems like I really can’t…
I did the following model in Mudbox:
I exportet the selection directly into the Unity Assets folder as a FBX file. Then there is a automatically created folder within the Assets folder with the textures and in Unity aswell of course.
So as you can see here all the textures are in Unity and in the automatically created folder:
You are applying multiple maps/textures to one mesh. In Unity this is showing up as only one map on the mesh.
The maps/textures either have to be combined into one map/texture, or you need to separate the meshes so there is one map/texture per mesh.
Suggestion - I can’t tell how you started your model in Mudbox, but it is common to start with a simple low poly model in another 3D package and generate UVs for that model before importing into Mudbox.
Alternately you can sculpt in Mudbox then import the model into a 3D package, generate UVs and reimport it into Mudbox for texturing.
I’ve not worked in Mudbox for over a year so I can’t say if generating UVs in Mudbox is doable, but having more than one map per mesh is not advised for game optimization reasons.
