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JacquesD
04-28-2004, 09:04 AM
Just a little question about displacement map from Zbrush 2.0 to use later with LightWave or any others 3D Packages:

Is it possible after importing and sculpting a object in Zbrush 2.0 to generate a displacement map from the high res model?

If so, does anyone know where I could find some kind of basic tutorial explaining step by step how to do it?

Thanks! :)

The ripper.

ghopper
04-28-2004, 09:13 AM
You might want to check out this thread on the zbrush forum and post your question there as well: http://www.pixolator.com/zbc-bin/ultimatebb.cgi?ubb=get_topic&f=1&t=015364

and

Rendering ZBrush Displacement-Maps In External Renderers (http://www.pixolator.com/zbc-bin/ultimatebb.cgi?ubb=get_topic&f=1&t=015376)

Glen ( s o u t h e r n ) uses LW and Zbrush a lot. I think he might have an answer.

EDIT: And you might want to have a look at the Guide Z2 Practical Guide (http://www.pixolator.com/zbc-bin/ultimatebb.cgi?ubb=get_topic&f=1&t=014968), there you'll find some info about exporting displacement maps.

Ziah
04-28-2004, 09:14 AM
do u meam similar to how normal map plugin for lw works but instead with z brush?

xtrm3d
04-28-2004, 09:52 AM
hi,
je pense avoir une bonne experience de zbrush2 avec lightwave ..
en fait jetais beta tester ..
si tu veux conbtact moi par icq.. et je pourais te dire ce qui fonctionne et surtout ce qui ne fonctionne pas ..:blush:

JacquesD
04-28-2004, 10:02 AM
Thanks for your help guys! :)

ghopper:Thanks... Pratical Guide is great but even when I follow some of the steps to create the displacement map, nothing happens... I must have missed something and I don't find what!

Ziah:Yes that's the idea... create a displacement from the details you added in ZBrush so that you can apply it later on low res object.

xtrm3d:Thanks for proposing... I don' have ICQ but if you want my messenger address is artquantic@hotmail.com

The ripper.

JacquesD
04-28-2004, 01:29 PM
Ok I found it... it seems like Zbrush doesn't like the UV map I have from LightWave cause if I create the UV in Zbrush then I can create my displacement map without any problems.

The only thing left I have to find now is why ZBrush doesn' t like my UV map!

Any idea anybody?

The ripper.

policarpo
04-28-2004, 04:41 PM
i think you'd have better luck posting on the zBrush forums. There are a few LightWavers on there who are experimenting with getting the best out of ZB and into LW.

Currently LightWave can only truly take advantage of normal maps in conjunction with zBrush maps.

The displacement map feature really only works with XSI, Maya and 3dsmax.

Be sure to submit a request (as I have) to NT so that they fix this, so we can actually use zBrush with LightWave as it is meant to be used.

Cheers.

zBrush forum (http://www.pixolator.com/zbc-bin/ultimatebb.cgi)

policarpo
04-28-2004, 04:50 PM
Here's a great thread for some LightWavers to try and tweak to get desirable results.

Have fun...and please either post your results here or on the ZB forum.

Cheers!

build it light but render it dense (http://www.pixolator.com/zbc-bin/ultimatebb.cgi?ubb=get_topic&f=1&t=015376)

Kikuchiyo
04-28-2004, 09:51 PM
Ripper,

That sounds like your uv maps possibly aren't being exported
from lightwave. If that's the case, and you try to generate a
dmap in Zbrush, you'll get an all white alpha. Make sure when
you export the .obj from LW you first go to the surface and
in the color tab (or whatever) select uv and your uv map. You don't have to actually add an image.

Policarpo-

"The displacement map feature really only works with XSI, Maya and 3dsmax."

Seems a little more like 'works with pretty much any other
3d application....", watch this thread at the zbrush forum:

http://www.pixolator.com/zbc-bin/ultimatebb.cgi?ubb=get_topic&f=1&t=015376

By all means, anyone who wishes to animate their detailed-up models in Lightwave should submit a feature request to Newtek.
Not to be a pain of course, simply to let them know how many people want it fixed, and not somewhere down the road.

Finkster
04-28-2004, 11:35 PM
Originally posted by policarpo
Here's a great thread for some LightWavers to try and tweak to get desirable results.

Have fun...and please either post your results here or on the ZB forum.

Cheers!

build it light but render it dense (http://www.pixolator.com/zbc-bin/ultimatebb.cgi?ubb=get_topic&f=1&t=015376)

Thanks for pointing that out. That is a great test model, but I don't think it is possible to render it correctly in lightwave. That model appears to be using an atlas-like uv projection, meaning that the infamous uv-seam/displacement problem becomes apparent all over the model.
If the model used a cylindrical projection, making it possible to hide or mask the seam, then it would be possible to render it with a high render-time subdivision. Still not as good as micro-displacement of a true low poly mesh, but useable none the less. As it is the uv-seams give the model a face that looks even more like a baboons arse than I suspect was intended.
(If you want to test it, be sure to convert the 16bit .tiff into an .hdr or other LW compatible file using HDR shop or similar)

ngrava
04-29-2004, 01:55 AM
"infamous uv-seam/displacement problem"?!!

So that what the hell is going on! I thought I was just going crazy or something. This whole time I thought I had seen this done corectly though at some point. I mean, I see this question all the time but I never see anyone answer, "No, it's not passable". Is there some way around it?

-=GB=-

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