Dmaps from multiMat surfaces

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Old 10 October 2004   #1
Dmaps from multiMat surfaces

I have a model I created in another package. Instead of just having one shader for the entire surface of the model, I have groups of polygons that have their own material assigned to them. UV's have been laid out for each material group and all of the UV shells/Islands share the same UV space. My question is I bring this model into Zbrush to add detail for a displacement map, but when I create the displacement map, it takes all the maps it creates and flattens it to one image. Is there a way to set Zbrush to create a seperate Displacement map for each material group that was created in another program?
Greg Smith
Phat Polyman of the digital Age
Los Angeles CA
Old 10 October 2004   #2
I think your problem is because Zbrush needs each piece of UV's that will have a separate map to be in different UV space. For example, if you have a head and body with two separate maps, I would make the head in 0,1 space and the body in 0,-1 (or whereever works well for you outside of 0,1).

Otherwise, Zbrush will just make anything sharing UV space into the same map.

Also, you'll want to use the Multi-Displacement plugin built into Zbrush to export multiple displacement maps. Multiple normal maps are exported by polygrouping according to UV's and then hiding the separate groups and exporting normal maps individually.

I hope this helps.
Old 10 October 2004   #3
yeah that kinda helps, however if I have a surface that has more than just 4 sets of uv's, then I may be in trouble. The model I am working on has 19 individual materials on the body mesh alone all, with an exception of 3 all of which need to be 2k textures. However my colleague may have found a solution, we just haven't tested it out yet. If it works then I may be in business.
Greg Smith
Phat Polyman of the digital Age
Los Angeles CA
Old 01 January 2006   #4
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