[Sidefx-houdini-list] object ID passes

Gary Jaeger gary at corestudio.com
Thu Nov 3 10:50:16 EDT 2016


Thanks Olivier but it's all Mantra at the moment.

On Thu, Nov 3, 2016 at 7:34 AM, Olivier Jeannel <facialdeluxe at gmail.com>
wrote:

> I think Redshift handles this (include / exclude object  from light) ; and
> this might worth checking but I think there is a control tab in the "object
> redshift parameters" that gives some controls on the rays (shadow,
> refractions, etc...).
>
> On Thu, Nov 3, 2016 at 3:21 PM, Peter Bowmar <pbowmar at gmail.com> wrote:
>
> > All shadow casting control is done on the Light's Shadow Mask.
> >
> > There is no way to set an object to cast shadows on others but not cast
> on
> > itself.
> >
> > Likewise, all light controls are per-object, you can't tell a light to
> not
> > illuminate an object.
> >
> > This used to be fixable (with a lot of work) using message passing
> between
> > custom light and surface shaders, however with PBR I think this is much
> > harder now :(
> >
> > Cheers,
> >
> > Peter B
> >
> > On 3 November 2016 at 07:14, Gary Jaeger <gary at corestudio.com> wrote:
> >
> > > And related (at least to this job) is there a way to set objects to not
> > > cast shadows? I'm thinking here of the maya render settings where it's
> > > possible to set things like "casts shadows" "receives shadows" "visible
> > in
> > > reflections" etc
> > >
> > > Thanks!
> > >
> > > On Thu, Nov 3, 2016 at 6:34 AM, Gary Jaeger <gary at corestudio.com>
> wrote:
> > >
> > > > Hi. I’m looking for a way to generate object IDs ala v-ray
> multi-mattes
> > > or
> > > > similar. So adding a channel to an exr where objectA matte is in the
> > red,
> > > > objectB is in the green, etc.
> > > >
> > > > *Gary Jaeger */ 650.728.7957 direct / 415.518.1419 mobile
> > > > http://corestudio.com
> > > >
> > > >
> > >
> > >
> > > --
> > > Gary Jaeger // Core Studio
> > > 249 Princeton Avenue
> > > Half Moon Bay, CA 94019
> > > 650.728.7957 (direct) • 650.728.7060 (main)
> > > http://corestudio.com
> > > _______________________________________________
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> > > Sidefx-houdini-list at sidefx.com
> > > https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
> > >
> >
> >
> >
> > --
> > Cheers,
> >
> > Peter B
> > _______________________________________________
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> > https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
> >
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-- 
Gary Jaeger // Core Studio
249 Princeton Avenue
Half Moon Bay, CA 94019
650.728.7957 (direct) • 650.728.7060 (main)
http://corestudio.com



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