ZBrushCentral

Baking texture from polypaint

Hello,

I polypainted my model and am trying to export it out as a diffuse texture (using Texture map -> create from polypaint). The model is UV’d and I can see the correct UV layout on the texture thumbnail. but the baked result is cracked and pixelated. Is there another method I should be using to export this map? Any help is appreciated.

Polypaint:
wotex

Baked Texture:
wtex

I figured out the problem. Somewhere between exporting from Blender into ZBrush, my UVs got corrupted. They still look the same in the preview, but none of the borders are connected which appears to be causing the issue. In case anybody else in the future is looking through forums for a solution, here is what I did:

Create new UVs on your lowpoly model (or find an older version of the model with uncorrupted UVs)

import into ZBrush and subdivide until you have the same resolution as your polypaint model.

Subtool -> project all onto your subdivided model and copy all the polypaint information.

Now, you should be able to export your textures without the pixelation from before

Welcome to ZBC @Sara_Summers
glad to see you figured out by yourself, what was going wrong with the uvs on your mesh.

Nicolas

Honestly, I’m not sure. It seemed like the edges of each face were marked as ‘seams’ on the UV sheet, and that caused the texture bake to try and create edge padding around every single face. That’s my theory, at least. It doesn’t seem to be a ZBrush-specific issue. I tried baking in Xnormal and Marmoset and got the same results. I’ve had problems in the past with Blender’s UV system so I think that must be the culprit.

Thanks Nicolas!