ZBrushCentral

UV errors

ZBrush Usage Questions
#1

upon exporting the maps I noticed some weird errors in the displacement.

UV appears to be welded across a seem causing streaking through the maps

image

  1. Base level UV’s created in Maya
  2. Subdivided to level 5 in zBrush and sculpted
  3. Level 2 obj and maps exported from zBrush
  4. Render test in Maya

I have iterated steps 2-4 a few times and I’m not sure where the bad UV’s crept into the file - but how do i repair this? The UV’s are fairly simple to correct but can I import a level 2 obj into the tool and will it update and retain all the sculpted layers and polypaint?

regards,
Cam

#2

Hi again Cam!

This usually happens when a UV island is touching the border of the uv space. Move or scale the uv islands in from the edge a bit.

#3

Thanks for the suggestion but the UV shells are nowhere near the edge.

It may well have been caused in Maya.

As it has been a few iterations since original base mesh import, I am exporting and fixing the base UV and will re-import. Hopefully that will fix it and not lose any sculpting.

#4

exported base as FBX, fixed the UV and reimported - all good