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Normal Map in Renderman RAT.

ZBrush Usage Questions
#1

Hi everybody ! :slight_smile:

it’s my first post here ! I was wondering if Renderman Artist tool & other main renderman compliant like Pixie … Can render correctly a Photoreal Girl create with low poly in maya and with a ZBrush Normal Map for details ?

I only find Renderman For Maya answer, with the search engine ! Does it’s gran brother can do it too ?

Thanks for answer :wink:

#2

Easily. :wink:

#3

Thanks for your answer Jason :+1:

I ask this question , because some of my friends said that Maya 7 & Mental Ray have some problems to render zBrush Normal Map ! So with RAT & Main Compliant everithing is ok !

Good to Know ! :wink:

Do you know any Tutorials that will learn me the basic settings to use ! and the comon zbrush to Renderman mistake ?

Best regards

S.K

#4

Well I don’t use Renderman much anymore. I do use Pixie and export from Maya with Liquid, but I handle pipelines. Specifically you need a shader that handles this either way. Easy to implement as many thousands of Renderman API compliant shaders exist, alot with the name Larry Gritz. :smiley:

I can also recomend 3Delight as I was an early supporter. Air, Aqsis, and quite a few others do tremendous jobs.

The Normalmap code must be rolled into the surface shader, don’t try to put it with a displacement shader, very messy. If you find the base shader you want to use, and a shader that handles normalmaps, I can help you get it together and compiled. This is not hard by the way and a lot of tuts exist.

http://www.fundza.com/rman_shaders/ray/basic_ray_tracing/basic1.html

http://gustavobraga.com/english/?p=24

http://mntlrib.sourceforge.net/

A search at http://www.deathfall.com would yeild immense data.

As well as http://www.highend3d.com

and the Renderman Repository - kept together by Tal Lancaster.

It just goes on and on…
:wink:

#5

You’re THE man Jason :wink:

Thanks a lot !

and i agree pixie , aqsis , 3Delight are great compliant !

#6

You might wan to attach this to a shader of chice, say matte or plastic and give it a whirl. It’s not perfect but it works. :wink: You’ll quickly want to modify it with other techniques on the web to be efficient and fast. :wink:

I pulled this out of some old stuff that was cobbled together from various things a couple years back. It’s been reworked quite a bit, but again it’s just a starting point.

#7

Thanks a lot For your great support ! :+1: