View Full Version : ZBrush tip for Maya users!!

10 October 2004, 08:51 PM
Don't use any Mayafiltering on your normal maps!! :eek: (the drop down menu at the top of "file" attribute, which is set to Quadratic by default)

If you do, you can get some nasty glitches on the surface of your model when you render it, especially with the higher filtering methods (ie Gaussian).

Took me ages to figure out why my render looked so glitchy! :rolleyes:

Sorry if this is old news to you guys, I'm new to the whole ZBrush/Maya pipeline thing...

10 October 2004, 02:51 PM
Interesting...i have to look on that . Thanks for the info.
By the way did u try different types of filtering the image in Maya?

10 October 2004, 01:11 PM
U were right ....the best result u can get only if u close Maya filtering....

Wierd though must have some logical explanation

10 October 2004, 03:02 AM
Don't use any Mayafiltering on your normal maps!! :eek: (the drop down menu at the top of "file" attribute, which is set to Quadratic by default)

Is that where it's located in Zbrush, or in Maya?

10 October 2004, 08:46 AM
Maya the texture node of an image used . :)

10 October 2004, 12:20 PM
Thank you LostLittleBoy and Dimitris, much appreciated *grin*


10 October 2004, 04:06 PM
Are you using Zbrush to create the UV coordinates of the mesh? Doesn't use Zbrush use face mapping? (every face has is own spot on the uvmap and isn't connected to the other faces)

I can images that the filtering of the texturemap creates lots of inaccuracy on the borders of faces when they are not connected. Since the face mapping creates lots of border this might be a problem. Or does this problem also occur when you create the UV coordinates in Maya and export it to Zbrush?

10 October 2004, 08:11 PM
@ Marcel....forgiveme i don't exactly understand what u are saying..please say it with other words...sorry :sad:

10 October 2004, 09:12 PM
Have you create the uv-coordinates (the way the texture is mapped onto the model) in Maya or in Zbrush?

If you use the Zbrush 'UV Tiles' (every polygon mapped to a small square in the texturemap ) then I can imagine Maya has trouble rendering the image without artifacts. The texture filtering takes multiple samples in the texture, and around the borders it gets inaccurate. So the more texture borders you have, the more errors you'll get.

I'm not sure if this is the problem, it's just a guess. You can try to use planar/cylindrical or spherical mapping, and see if you'll also have the problem.

10 October 2004, 09:19 PM
When i make the UV layout in Maya , go to ZBrush ...paint and then back to Maya...i don't notice anything wierd...but now u got me thinking if i have to test this again..thanks :)

11 November 2004, 08:55 AM
Ok, then that's not the problem for sure :)

11 November 2004, 12:01 AM
Hmm didnt change anythin, i am still gettin that wierd flat shading.



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