Odd tearing and random extra geometry when uploading


(Cut Rex) #1

First of all apologies if this is a simple fix, I’m still fairly new at modelling.

I’m having some weird tearing/extra faces show up on some of my models that I’ve uploaded. The models look clean and fine in Maya and substance painter but as soon as I upload them to sketchfab they kinda break for lack of a better word. It’s not just one model that’s affected, I’ve noticed that 5 of my models have this issue in one way or another. I’ve also noticed that these issues seem to be localized around areas that I cut out from the model by using the difference function in maya, maybe that has something to do with it.

Here’s how my E-5 looks in maya:

Here’s how it looks once uploaded:

And here’s a link to the model:

Thanks for the help in advance.

Edit: I’ve tried exporting in different formats and updating my drivers but the same thing still happens.

Edit 2: Problem solved, I had massive N-gons throughout my models. Triangulating seems to have fixed them all.


(Nomadking) #2

It looks like the surface on that side of the gun near all the fine details is a massive N-gon (N sided shape) which is causing issues on the export. You should stick to triangles or quads (3 or 4 sided) for any final meshes.

Looking at the shape of the area, you’ll probably have to add some more points on the face to get those concave shapes to triangulate well.


#3

The Mesh > Triangulate command could work to quickly fix it, but as nomadking points out, it might not be perfect if the shapes are too complex.


(Cut Rex) #4

Wow I had no idea about N-gons. Just triangulated it and re uploaded and now it looks perfect! Thanks a lot for your help.


(Nomadking) #5

Glad to help :slight_smile:


#6

@jorditorres was looking into improving our tessellation, but it’s not clear if we could account for every case. That said, 3D software’s triangulate functions always seem to do a great job handling both convex and concave n-Gons…