Universal shader issue

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Universal shader issue

Postby firesprite » Sat Jan 22, 2022 12:00 am

firesprite Sat Jan 22, 2022 12:00 am
Here is the screenshot with different render results but scene is the same. Can someone explain what happens?

Cinema 4D R23.110 (RC) -1.jpg


Or it is all known issue and i just missed something?

Here is the link to test scene, check this one and you're get different results using universal shader!
https://www.dropbox.com/s/0x4j46bg5jl51ty/test.c4d?dl=0
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Re: Universal shader issue

Postby elsksa » Sat Jan 22, 2022 10:38 am

elsksa Sat Jan 22, 2022 10:38 am
Hi,

I would not suspect an issue, from what I see from the screenshots. Eventually different material properties/attributes. On the glass cylinder, the roughness seems to differ.

Could you screenshot both Universal Material properties, respectively?
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Re: Universal shader issue

Postby firesprite » Sun Jan 23, 2022 10:09 pm

firesprite Sun Jan 23, 2022 10:09 pm
elsksa wrote:Hi,

I would not suspect an issue, from what I see from the screenshots. Eventually different material properties/attributes. On the glass cylinder, the roughness seems to differ.

Could you screenshot both Universal Material properties, respectively?

this is the same scene with all the same properties and different results, you can download this test project and check it
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Re: Universal shader issue

Postby Ilius » Mon Jan 24, 2022 7:45 am

Ilius Mon Jan 24, 2022 7:45 am
Im having the same issue with all my old projects that im trying with the new octane now


I've used Universal Material for everything, even for glass.
It used toe be as easy as "unchecking" Albedo and getting rid of Metallic reflection and voila, the Universal Material acted like a specular.

But not anymore.

Now you have to really use a Specular material.
Is that on purpose?
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Re: Universal shader issue

Postby bepeg4d » Mon Jan 24, 2022 8:29 am

bepeg4d Mon Jan 24, 2022 8:29 am
Hi,
to fix the issue, please go to Universal material/Transmission channel, and change the type to Specular instead of Diffuse.
In previous versions,Specular was the default type, but there was an issue with Mix Material Diffuse+Glossy conversion to Universal, for leaves and similar translucent flat objects:
viewtopic.php?f=85&t=78663&p=406664&hilit=transmission+diffuse#p406664

So has been set to Diffuse, and you need to set the type to Specular, if the Universal material has to behave like a Specular material.

ciao,
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Re: Universal shader issue

Postby elsksa » Mon Jan 24, 2022 10:04 am

elsksa Mon Jan 24, 2022 10:04 am
Beppe to the rescue.

I do not think I have ever used The Universal Material for just a simple glass material.
For such glass material, I personally use the Specular Material since Octane does offer "individual lobes", so to speak.
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Re: Universal shader issue

Postby hazenkind » Mon Jan 24, 2022 10:15 am

hazenkind Mon Jan 24, 2022 10:15 am
The old Materials are only there for legacy reasons i guess? All that "old" stuff should have a "legacy" Label.
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Re: Universal shader issue

Postby Ilius » Mon Jan 24, 2022 12:03 pm

Ilius Mon Jan 24, 2022 12:03 pm
its always those small changes that f**k up your workflow :D

i know i could just read up whats changed in the log, but it would be nice to have a function like cinema itself, where new stuff is highlighted in yellow
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Re: Universal shader issue

Postby firesprite » Mon Jan 24, 2022 5:06 pm

firesprite Mon Jan 24, 2022 5:06 pm
Thanks guys for all replies, now i got what the problem was and for sure i missed that checklist with updates about universal material new settings(
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