artifacts when baking Mesh Maps

[Nalim246055401tfa]

I am trying to bake the mesh maps from my seat model, but i am left with weird artifacts(see picture).

These artifacts are visable in the ambient occlusion, world space normals and the position maps. The mesh is correctly uv-unwrapped btw.

Does somebody know what the problem is??

[davescm]

Have you double checked the unwrap for overlaps? It does look remarkably like the artifacts you would see when UV islands overlap

Dave

[Nalim246055401tfa]

Thanks for the replie, but I am very sure the uv-maps are not overlapping. Moreover I have baked the normal maps in blender with no problem.

It is specifically substance painter that creates these artifacts.

[davescm]

Are you able to post a link to the model and I'll try it here and see if I can see what is happening. PM me if you prefer.

Dave

[Nalim246055401tfa]

I have sent a drive link.

[davescm · Accepted solution]

Hi

I just took a look at the model. Several of the parts in the unwrap are used twice in two different places on the model. For example, the seat side appears once on the UV map but is used twice on the model (once on the left and then reversed on the right). Obviously this means that the same part of the UV map has two different places in the position map so the bake looks incorrect.

Try re-unwrapping with each piece of the model appearing on the UV map separately. I just tried it quickly using Blender's smart UV project, after applying the scale on a few parts, and it now bakes correctly in Painter.

Dave

[Nalim246055401tfa]

Thanks, I see now that i have accidentally applied a mirror after uv-unwrapping so the the uv overlapped (again). 

Thanks for your help Dave!

[davescm]

You're welcome 🙂

Dave