Need help identifying what is causing distortions in my models

(Yeastdonkey) #1

I've been trying to figure out what is causing the model I uploaded to sketchfab to have distortions. The best I can describe these are is if somebody took a smear tool to sections of the model. They are most prominent in the MatCap rendering setting and invisible with shadeless rendering. I've included a picture of the distortions appearing on my model here.

(Mrchlblng) #2

Hey @Yeastdonkey,

our processing reports that you had 4 "null" normals in your original data so we dropped your normals and recomputed them using a 45° crease angle. This is what causes the shading to not be as sharp as you'd like. You should try to export unit normals everywhere or at least normals with a bigger magnitude.
We might change our policy about normals in the future but right that's a requirement we have to make sure that every model could be correctly lit if desired.