ZBrushCentral

Normal map artifacts

ZBrush Usage Questions
#1

Hey, i’m trying to make a clothing for my character (for the first time :wink: ) - i’ve done this from mask+extract and retopologized. So i have a low poly mesh with good UVs (sure they’re clean) but when i create a normal map from high poly sculpt, it creates strange artifacts in some places. On the attached image you can see a random wrinkles and other strange stuff - it destroys one of the star-thingys - but on the mesh, the surface in this place is clean. Any ideas what’s wrong? Screens:

LowPoly:

HighPoly:

Normal map with artifacts:

Attachments

htvjar.jpg

2zr036f.jpg

znrodc.jpg

#2

What do the actual UVs look like if you were to turn on polyframe and use Tools: UVMap: Morph UV?
Is the inside of the shirt fully modeled as well, and if so does it have it’s own unique UV space?

#3

Yeah, my bad, that’s it. The UV-islands of the inside of shirt were outside of the main UV-space (i thought it’s a good way to save the texture space, it was working in some cases) I’ve moved them and the problem is gone, thank you.