cryptomattes on geometry inside a geo node

[LeoYfver]

alot of times we have a geometry but we want cryptomattes for different parts of the geometry based on groups or scattered packed primitives inside. Is there a way to get cryptomattes on attributes inside a geo node?

Regards Alexis

[bdancer]

There is no way to do this right now.

[LeoYfver]

It would be nice to have, is it something that could be added?

[bdancer]

> is it something that could be added?

Unfortunately, no.

[LeoYfver]

ok, thanks for answering!

[bdancer]

LeoYfver, actually, I've found a way how to implement this. Will let you know about the results.

[LeoYfver]

interesting! im crossing my fingers

[LeoYfver]

Is this being worked on? I wonder if it could be based on groups or paths to get a more granular cryptomatte.

[bdancer]

It's already there. Works in user attribute mode only.

[LeoYfver]

since nightly or since longer time ago? And what exactly works? Can i pickup primattributes like path? can i do it based on groups? or only on the object properties which i dont seem to be able to figure out either.

[bdancer]

Since a few weeks.

[LeoYfver]

Ah! it was the forced attributes i didnt know about. Awesome work. this helps alot!

[LeoYfver]

the wildcard for force attributes doesnt seem to work but maybe its not intended to. Neither on object properties or Rop, but having specified the name on one of the suffice. Just want to check.

[bdancer]

It's not intended to.

[blented]

+1 for not knowing about force attributes

Is there any way to auto-force any attribute that's used in a cryptomatte node?

Without that I'd imagine most people wouldn't ever figure out how to set this up.