[Sidefx-houdini-list] softimage pass trick in houdini

Edward Lam edward at sidefx.com
Wed Sep 13 08:03:55 EDT 2017

On your Mantra ROP, put something like "* ^/obj/my_single_object" in the Forced 
Matte parameter. This forces all your objects to be rendered as matte except for 


On 9/13/2017 4:15 AM, Gerbrand Nel wrote:
> Hey guys and girls.
> Back when life was simple and softimage was still a thing in my life, There was 
> this thing called passes.
> I know houdini has takes, and they are awesome, but There was this nifty trick 
> in soft where a new empty pass automatically had everything in your scene 
> grouped under a "background partition". This gave you the ability to assign one 
> material to everything in your scene. You could then remove certain elements 
> from that partition to isolate them for render passes.
> Can this be done in houdini without having to manually select everything you 
> want to overwrite?
> My client has asked me to render out a matt of a single object in my scene. I 
> would like to make everything black, and this one thing white without spending 
> half a day
> Thanks
> G
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