SSS vs Vray 2-Sided material

V-Ray V-Ray for 3ds Max General
1

Hi guys,

I was watching this very useful tutorial (thanks Jonas): https://www.youtube.com/watch?v=e2KqOfraUyw&t=665s (he explains translucency from about 9:31)

It’s interesting that he mentions a new workflow for translucency, which I have noticed in lots of imported PBR surfaces from Quixel. However, my question is, if I use the SSS option in my VrayMtl Translucency settings, is it much slower than using a 2-sided Material? I feel like it’s affecting me here, but I don’t have time right now to run some tests. Plus, is the quality much better with SSS enabled vs 2-Sided?

hope that all makes sense…

2

I remember testing with both methods back when VRay added the thin walled option with Translucency and iirc the new method is a bit slower but easier to control and give more freedom in terms of colors and intensity .
beside Jonas tutorial , you can check the official documentation about this subject:

3

Earlier I got similar problem , Lele showed this workflow and explained something you maybe want to know.

https://forums.chaos.com/forum/v-ray-for-3ds-max-forums/v-ray-for-3ds-max-general/1169347-what-happens-when-two-2-sided-mtl-connect-to-parent-2-sided-mtl

4

thank you so much! that is very helpful…

I’m guessing you would use the same SSS technique with curtains and lampshades then…?

5

Yes, and leaves , grass , papers and any single-face translucency object .

6

Thanks for the link
I need to test the SSS with the new “Uniform” mode to see how that will affect the render quality and speed as I think my earlier test was with the old model .

​