Hello again. Sorry that I ask so many questions, but I’m in a cruicial point in my modeling stage at the moment… I only have one small obstacle left before I finally can complete a “real” project where I started in Zbrush and rendered in a different renderer.
I have, as topic says, a problem with my bump map. I’ve read what aurick said in another thread:
"First, create a blank texture of the size that you intend to export. A power of 2 should be used such as 512x512, 1024x1024, 2048x2048 or 4096x4096.
Second, press Tool>Texture>GUVTiles or AUVTiles. This must be done at subdivision level 1.
Your model is now UV mapped. Once you’ve created your normal map and/or texture, simply flip the image vertically before exporting both it and your model."
That I did. Well, he was talking about normal maps, but I guess the procedur is the same. One thing I haven’t understand yet is the different with GUV and AUV, sometimes one of them work inside Zbrush and sometime the otherone does (at least it feels like that).
I think I can explain more with these pictures:
This is the model in Zbrush with a very simple texture wich shall be exported as a bump map. No problems here. The texture was created, then I clicked GUV (at SubDivLvl1) and this is how it looked at SubDivLvl 3. I export this texture and also an .OBJ as SubDivLvl 1. Then I bring it in 3dsmax7.
This is the model (obj of SubDivLvl1) in 3dsmax7. I only applied a MeshSmooth too it to make it easier to see the errors. If I render there will be sharp edges where there are grey lines. I’ve been banging my head into this all day long now and still can’t get it right. The grey lines runs right where the colorized groups (if SHIFT+F is on in Zbrush) are. So something might be wrong with my UV’s when I export, but I just can’t find out what.
I have no problems of creating a Displacement Map from this same model and render it in 3dsmax7 with Vray, but I just can’t get the bump to work. And my model is a bit “weak” without a bump map 
What am I doing wrong?
