Cryptomatte and Daylight Fog Medium Issue

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Cryptomatte and Daylight Fog Medium Issue

Postby Krischl » Mon Jan 25, 2021 6:45 pm

Krischl Mon Jan 25, 2021 6:45 pm
A. Operating System, including version: Windows 10
B. Graphics Card(s) model: 2x 2080 Ti
C. RAM Capacity: 64 GB
D. Nvidia driver version: 460.89
E. OctaneRender Standalone version: OctaneRender™ 2020.1.5
F. OctaneRender plugin version: 2020.1.5-R4
G. Host application version, including build number if available: C4D R20


Hello,
i have a problem regarding Cryptomattes. Unfortunately, I cannot share the scene.
The light source of the scene is an Octane Daylight with Fog Medium activated.

With Fog Medium activated the Cryptomatte pass is unfortunately unusable.
Without Fog Medium the result is as it should be. See comparison picture.

Apparently there was this bug also in the standalone version.
This was probably fixed in version 2020.2 RC 4.
Quote:
" Fixed cryptomatte passes rendering incorrectly when environment medium was enabled."
Link: viewtopic.php?f=33&t=76451&hilit=cryptomatte+medium

Thank you.
Greetings, Christian

Here are a few pictures to illustrate:
Attachments
05_Passes.PNG
04_Kernel.PNG
01-03_daylight fog medium settings.jpg
difference.jpg
Krischl
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Re: Cryptomatte and Daylight Fog Medium Issue

Postby bepeg4d » Tue Jan 26, 2021 7:16 am

bepeg4d Tue Jan 26, 2021 7:16 am
Hi,
please have a look at here:
viewtopic.php?f=33&t=76774&start=20#p395745

ciao Beppe
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Re: Cryptomatte and Daylight Fog Medium Issue

Postby Krischl » Tue Jan 26, 2021 11:05 am

Krischl Tue Jan 26, 2021 11:05 am
Thank you for your response.
I could not find the pass "Volume occlusion" in the Cinema 4d plugin. is there an equivalent ?

And how do I use this pass? does this pass replace the usual cryptomatte pass? sorry I am a bit lost here and need more explanation.

In contrast to the example images from the linked thread, my example image is extremely noisy.
Maybe I do not understand or overlook something, then please enlighten me :).
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