ZBrushCentral

Zbrush messing up my maps

ZBrush Usage Questions
#1

I made this character in ZBrush, retopologized it and UVed it in Maya and imported back to Zbrush to add details and polypaint. Now I wanted to export maps and import it it back to Maya for rendering and animation but Zbrush messed up baking my maps. I have no idea why. Please let me know if you recognize this issue. It’s this weird streak of unexisting polygons that goes from tail up. Look at Maya UVs and look at Zbrush UV’s. Weird…I eve opened my model , deleted polygons and there is no mistakes, no hidden polys or manifold geo, it’s all clean. Why is Zbrush incapable of producing maps fro something this simple ?
Any ideas ?
ThanksM.pngZ.png

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Z.png

#2

This is because your UVs go right to the edge of the UV space. If you shrink the UVs down a tiny bit then all will be good.

#3

THank you. Is there a way to uniformly resize them withing UV MASTER or do I have to export my mesh and rescale it back in maya ? (In which case I have to proje t detail and polypaint back on re-UVed mesh.).

#4

Yes, I think this should work:

  1. Select your model and go to the lowest sub-division level.
  2. In UV Master press the Copy UVs button. All this is for is to enable the Flatten button below.
  3. Press Flatten. The model is flattened according to the UVs.
  4. Turn on Scale so that the Gizmo3D shows and click+drag the central square to scale the flat model down. It’s not important how much you do this because UV Master will adjust it afterwards.
  5. Press the UnFlatten button.
#5

Also I don’t think my maps are even that close to boarders, look…

PS> I just saw your post I will go and try that option. Thank youScreen Shot 2018-01-21 at 9.45.27 AM.png

Attachments

Screen Shot 2018-01-21 at 9.45.27 AM.png

#6

I did that and I pasted UV’s on the older model in same session (one with wide spread UVs) and paint got all screwed up unfortunately…I guess I have to re export , go to Maya and re import…project…uhhh

#7

If the vertex order doesn’t change between meshes, then importing the new UVs on top of the original sculpt should cause the UVs to automatically update (meaning you wont have to do any projecting).

#8

Also I don’t think my maps are even that close to boarders, look…

Yes they are, in several places they look to be touching the left and top edges.