Cheating SSS, Sub Surface Scattering

[S0nny]

Hi guys, I know that the lw SSS nodes don't work in kray: any ideas how to make a fake but convincing sub surface scattering for something like rubber, wax, plastic and similar?
I was thinking about the thickness node and transparency + translucency, anyone who managed that in a good result?
Thanks!

[Janusz Biela]

Hi guys, I know that the lw SSS nodes don't work in kray: any ideas how to make a fake but convincing sub surface scattering for something like rubber, wax, plastic and similar?
I was thinking about the thickness node and transparency + translucency, anyone who managed that in a good result?
Thanks!

I had something with thickenss node - it works good but control is strange so last time I use only translucency. You can use also double translucency - it`s make different behaviour on both sides of polygon. I will show it soon in nodes topic.
No solution for that yet

[S0nny]

Ouch...
What do you mean by double translucency? Double side surface + node setup with different translucency for poligon side? I usually do that with different materials using spot info poly side and switch node, I'll give a try
Btw, do you thing kray 3.x will have this kind of surfaces?

[S0nny]

Ok, here's my attempt. It's far from perfect (it's just a super fast setup actually), as you said the thickness is difficult to control.
1 is fake sss
2 is fake sss + double side
3 is normal surface with just some fresnel

[jdomingo]

cool,

can you share your material setup please? thanks.

[S0nny]

Here we go, the scene for those who want to do some experiments.
Basically it's just a transparent node with 100% refl/refr blur. I don't know if the grad thickness node output is connected in the right way, as Janusz said it's a strange node to control and sometimes doesn't seems to affect the material at all.

[jdomingo]

thanks SOnny, will test this.