Per Light/Lightgroup Shadow Pass

[Justin_Long]

Is there any way to currently achieve this? I get asked about this from comp all the time!

cheers,

Justin

[Stephen.Blair]

use the shadow_matte as an AOV shader
shadow_matte has a light group parameter that allows you to specify a single light group

[Justin_Long]

ok thanks. How would I set this up? could I use shadow_matte_* to create an AOV per light group on the fly?

cheers

[Justin_Long]

was already using shadow_matte shader thanks. Ok just found the AOV group section, will give it a go, cheers!

[Justin_Long]

not sure thats what im after actually. Looks like you can only choose one lightgroup? I need each light group to have its own AOV.

[Stephen.Blair]

Yes, it supports just one light group right now.

[Anonymous]

I am stuck in the same situation.

My setup:

-assigned lights to lightgroups (red, blue etc..)
-named new aov's to use those lightgroup (ie rgba_red)

-assigned different ai shadow matte shadoer to those aov. and each linking directly to a lightgroup (through the shadow matte shader lightgroup tab).

-also tried to link them afterwards with some light path expressions...

None of this seems to work.

Multiple shadow aov's (assigned per light) doesn't seem to function. Is this right? Looks like it can only render one lightgroup for all the aov's. Any chance to have an update on this issue please?