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Jittered Color Correction Not Working on Packed Instances?

Posted: Sat Oct 04, 2025 7:31 pm
by bollella
I'm experimenting with a simple scene and trying to get the Jittered Color Correction node to work. I've tried *everything*. I know by manually changing the seed value I can get colors to change but for all the copies.

I have attached the scene file.

Help!!

Exasperated,

Greg

BTW, I'm on MacOS 15.7 and a Mac Studio M3 Ultra.
JitterTesting.hiplc.zip
(209.16 KiB) Downloaded 10 times

Re: Jittered Color Correction Not Working on Packed Instances?

Posted: Sat Oct 11, 2025 6:45 am
by mirocreative
Hey Greg,

your setup should work fine, just enable "Packed Geo Instancing" on grid1 SOP's Octane tab.

Chris.

Re: Jittered Color Correction Not Working on Packed Instances?

Posted: Sat Oct 11, 2025 1:49 pm
by bollella
mirocreative wrote: Sat Oct 11, 2025 6:45 am Hey Greg,

your setup should work fine, just enable "Packed Geo Instancing" on grid1 SOP's Octane tab.

Chris.
Thanks Chris!!

Greg

Re: Jittered Color Correction Not Working on Packed Instances?

Posted: Sat Oct 11, 2025 5:40 pm
by dom_otoy
mirocreative wrote: Sat Oct 11, 2025 6:45 am Hey Greg,

your setup should work fine, just enable "Packed Geo Instancing" on grid1 SOP's Octane tab.

Chris.
Just checked too and it definitely works.
Screenshot 2025-10-11 123623.png
Things to check:
1. Your object is a packed
2. Enable "packed instances" in the octane object parms
3. Make sure "Instance IDs from" setting is NOT "packed RGBA values from Cd point attribute" (this will break nodes like the random color or jittered color correction nodes) - the default "point number" will work fine.
Screenshot 2025-10-11 123959.png