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Cryptomatte question

Posted: Wed Mar 16, 2022 2:09 pm
by HHbomb
Hi,
Is there a way to exclude some objects or material from cryptomatte render.
I mean in my scene :
-I have a building : I want all materials separated in my cryptomatte render.
-I have all plants with many many materials : I don't want all the material, it would kill the file ( too many materials )
DO I need to make a render of building and plants , then apply a diffuse material to all plants, and render cryptomatte ( material node name for eg ) ?
Thanks.

Re: Cryptomatte question

Posted: Mon Mar 21, 2022 2:05 pm
by paride4331
Hi HHbomb,
Could be enough setting them "hide" in Octane properties?
Regards
Paride

Re: Cryptomatte question

Posted: Mon Mar 21, 2022 2:48 pm
by HHbomb
Hi, Paride.
If I hide my plants, I need to make another render to separate the building and the plants ( render layerid for exemple ).

Re: Cryptomatte question

Posted: Wed Mar 23, 2022 1:01 pm
by paride4331
Hi,
you could try using CryptoObjectNodeName grouping the plants.

https://docs.otoy.com/StandaloneH_STA/S ... Passes.htm

Regards
Paride

Re: Cryptomatte question

Posted: Wed Mar 23, 2022 2:23 pm
by HHbomb
Thanks Paride !
Yes. I'll try this and see what happens with ForestPack ... :-)