Doing proper SSS

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Egert_Kanep
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Joined: Tue Mar 13, 2018 10:34 am

Doing proper SSS

Post by Egert_Kanep »

I have been trying to achieve some kind of sss feel with glossy translucent and volumes. I looked at the example in the wiki, but am unable to achieve same or even similar result.

The only way I have gotten any subsurface look is by lowering the opacity of translucent materials. Does anyone have any setup or method for achieving good looking sss?

Also would it be possible to have volumes as separate aov?
Fox
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Joined: Sat Mar 31, 2018 11:17 am

Re: Doing proper SSS

Post by Fox »

If my memory serves me correct, the reflection color has to be close to black (dark gray), then the glossy translucent is more translucent and gives the look what volume have you set up for it.
Fox
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Joined: Sat Mar 31, 2018 11:17 am

Re: Doing proper SSS

Post by Fox »

Seems like mix with rough glass can have more translucency.
sss 747372848291.png
sss.7z
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Egert_Kanep
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Re: Doing proper SSS

Post by Egert_Kanep »

I basically copied wiki settings but result is very different

https://wiki.luxcorerender.org/Subsurface_Scattering

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sss.PNG
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Egert_Kanep
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Re: Doing proper SSS

Post by Egert_Kanep »

I used matte translucent for this test. Does this look correct?
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matte+volume, matte with red translucency, pure volume
matte+volume, matte with red translucency, pure volume
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Egert_Kanep
Posts: 237
Joined: Tue Mar 13, 2018 10:34 am

Re: Doing proper SSS

Post by Egert_Kanep »

some more experiments with sss. This time I tried to use color at depth node as scatter color parameter for volume. This way I can have variable volume ''density'' in the mesh

Image
wasd
Posts: 319
Joined: Tue Apr 24, 2018 7:20 pm

Re: Doing proper SSS

Post by wasd »

Egert_Kanep wrote: Mon Dec 23, 2019 4:10 pm I used matte translucent for this test. Does this look correct?
Nope, it doesn't.
I am just trying the same – make at least moderately correct looking human skin, but it seems current materials with volumes attached just don't make any sense. If they are physically based, I want to know on what physics.
CPU Bidir + Metropolis | Core i5-4570
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