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Cryptomatte changing colors

Posted: Fri Sep 30, 2022 2:53 pm
by RyanScammell
Hi there,

I had this issue the other day where a cryptomatte we rendered out was changing colors midway through the render. Give the EXRs in this file a look:

https://www.dropbox.com/sh/kry1ch9hxq58 ... BLM3a?dl=0

What causes that change around frame 40? (I mentioned in another post the gamma of a rendering changing mid render). If the colors change the cryptomatte becomes kinda useless. Similarly to my other post this would have been a single project with a single set of settings placed in the render queue. The render may have crashed a few times and had to be restarted. But we always would have just restarted the render via the Cinema 4D render queue without changing any settings. We are net-rendering between multiple machines so it's possible something's related to that? Running octane via Cinema 4d on Windows. This would have been with octane 2021.1.5.

Let me know your thoughts.

-Ryan

Re: Cryptomatte changing colors

Posted: Mon Oct 03, 2022 6:56 am
by bepeg4d
Hi Ryan,
please make sure to use Cryptomatte MaterialNodeName, instead of simple MaterialNode, or the assignment will change every time you open the scene, or you add a new material.

ciao,
Beppe

Re: Cryptomatte changing colors

Posted: Wed Oct 05, 2022 9:36 am
by moebius
and "Instance", if you wanne matte objects. I believ the rest is not working.