Uvs From Maya To Zbrush

[livelife]

hey,

Does anyone know if you can have multiple uv shells (not sets) in maya and then go into z brush to paint and export normal maps? all of my uv's are on one uv map and there are no overlapping uv's, but the rgb values change on the texture wherever there is a seam (new uv set)

appreciate any help.

D

[joojaa]

QUOTE(livelife @ 06/21/06, 04:08 AM) [snapback]240311[/snapback]
Does anyone know if you can have multiple uv shells (not sets) in maya and then go into z brush to paint and export normal maps? all of my uv's are on one uv map and there are no overlapping uv's, but the rgb values change on the texture wherever there is a seam (new uv set)

Offcourse because its interpolated, in the renderer And teh data itself is antialised. You can try to extend the pixels a bit to the outlying empty area. Some programs have funbctiosn for this but photoshop for instance does not realy have one.

[livelife]

I know what you're talking about, but that is not my issue i don't think. Thanks though.

You see, it makes the map nice and smooth, but wherever there is a seam it thinks of it as being somewhere else on the model and changes it for that uv shell.

I'm quite sure that Zbrush allows uv maps to be split up because of the polygroups->uv groups option, but I still can't get it to export a proper normal map.

see attached examples. there appears to be no images uploaded, but you just have to click the empty thumbnails. http://ww1.pureupload.com/pupload/view/5700

thanks to anyone with suggestions.

D

[joojaa]

And all the uvmap shards are within the 0 to 1 range?!? Zbrush does not allow bigger rendes than that! (the etxture just repeats there.)

[doug-hines]

Did you use the ZMapper plugin to get your normal map? Check your UVs by clicking Morph UV under Morph Modes.

If not, verify your UV seams in ZBrush by using UV Check under Tools>Texture. Black lines is something you do not want. If you do not care about your UVs, try GUV Tiles, then export both the Mesh and NormalMap back to maya.