ZBrushCentral

displacement to bump tutorial for ZB 3.xx

ZBrush Usage Questions
#1

Hi, Ihave surfed and searched around but I could not find any good tutorial about creating displacement maps in order to use those for bump mapping in other applications.

In the meantime, I will explain what I tried: as I try to create a displacement map, I am forced to use AUV tiles and the result is a blocky displacement map showing even borders on each block. So the question is if I have to UV map the model in another application and reimport it in Zbrush so that it has a proper UV map. And then create the displacement map … Does this make sense ?

#2

You can use another program to create different UV mapping. Go to level 1 of your model and export it. Assign the new UV mapping, but make sure that nothing changes the point order of the model. Then back in ZBrush import thew new version into level 1 of the model. This will update the UV’s.

#3

Thanks Aurick, very much appreciated.

How much simple should be level 1, concerning the UV map ? I mean, if level 1 is considerably low on polys, wouldn’t be better to delete it so that level 2 becomes now level 1, in order to have more accurate UV maps ?

About displacement, I can create a map only on level 5 (250000 polys). If I try to create it at level 6 (970000 polys), nothing happens (I click but no activity is taking place). Any idea why ?
Probably there is a limit beyond which displacement map cannot be created ?

#4

Displacement and normal maps are based on the differences between the current level and the highest level. If you’re at the highest level, then nothing will happen because there are no differences to map.

#5

Well, another lesson learned :smiley: Thank you