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Painting on flattened UVs using Morph UV and Projection Master problem

ZBrush Usage Questions
#1

Hi All:

I’ve recently been trying to do texturing in ZBrush, and I’m running into some problems when wanting to paint on flattened UVs.

Essentially, I’ve been trying to use these steps to paint on flattened UVs in Zbrush:

http://cryrid.com/art/?p=9

I tested it and it seemed to work fine for most of my models. However, for an assignment that I’m working on, something strange is happening.

When I do a test projection using the exact same steps, I can paint fine. However, when I pick up, something very odd occurs: the paint seems to be picked up in a speckled manner, as shown.

Dropped to canvas and test paint:

Upon pickup:

This seems to happen regardless of sDiv level, no. of subtools or point count, as I have been unable to reproduce this problem with any of my other OBJ models with UVs on them. This also appears to be happening for all subtools in this particular ZTL, so I am at a loss as to why this could be occuring.

Anyone who could help solve this problem or offer a better way of painting directly on flattened UVs in Zbrush, please, I would really appreciate any assistance you could offer! Right now my workaround is to clone the texture to the palette, clear the canvas and fill that in, paint on that and then reapply the texture as polypaint, but that’s a little more extra work and I would really prefer to not have to keep repeating the process and clearing my canvas/redrawing in my tool all the time when I want to make adjustments on my flattened UVs.

Thanks!

1 Like
#2

I was originally leaning towards thinking there might have been duplicate faces (or perhaps an opposite limb occupying the same UV space), but I haven’t been able to preproduce identical results :s

If you do a TextureMap: New From UV Check, does everything turn up fine?

#3

Yes, it does. My UV map appears fine. I also made another test model and used the exact same process for creating the UVs and I still can’t reproduce the problem; it seems to be only happening with this subtool for some odd reason.

Sigh…

UPDATE: Also tried cloning a subtool to the tool palette, deleting the existing UVs and generating UVs within Zbrush usiing PUVTiles and then trying to paint on those. Same problem still occurs…

UPDATE 2: Well, for some reason this method worked on just ONE of my subtools. And that subtool was actually created the exact same way as all the other subtools, with UVs also laid out in headus, so I’m really stumped as to what on earth the problem is.