Page 1 of 2

some SSS tests with beta 2.55

Posted: Thu Oct 27, 2011 3:01 pm
by kubo
Well, all this tests have been done with the models I've created for my next scene for the apocalypse contest. I won't talk here much about that scene and I'll open a proper thread whenever I get it more advanced. But for now I just wanted to test out the materials. The scene was built with two premises, first one not to be an archviz scene (I've already submited one) and the second one, to use the new features of Octane, SSS and the incoming instances.
All this examples are work in progress both in modeling and texturing. They've all been rendered in PT for under 2 minutes with an HDRI as light source. I've added a test material render with fake SSS done mixing specular and difuse, or as in the tree just difuse with translucency. You can clearly see that the SSS does not only look much, much better but its quite faster, in the girl from 3.33 with SSS to 2.30 with "my mix", and in the tree same happend and it was against a difusse material! WOW
Also the tree might look "nicer" the diffuse one but that's because the tree is seen from under the foilage looking at the sun, so the correct and expected result is the SSS one not the diffuse one. The skin needs a map to control the scattering (the nose seems to fade) and they all need some tweaking but keeping in acount that I've used an "out of the box" specular it looks great, so does the dress, with a subtle transparency.
Well hope you like it and make tons of new awesome renders with SSS!!!! have fun!

Re: some SSS tests with beta 2.55

Posted: Thu Oct 27, 2011 4:28 pm
by Daniel79
in specular material how did you do to give more color to the leaves?

You can do this thanks at software you use to model or i be able to do the same with a Rhino?

maybe my english(google traslate) is not good!!
Multicolor is possible because your modeler software allow it or you do this effect whit octane??

maybe you can share the material in livedb??Please
Thanks a lot

Re: some SSS tests with beta 2.55

Posted: Thu Oct 27, 2011 4:47 pm
by kubo
you mean the tree leaves? well there is 4 different leaves instanced in a single textured and aplied to 4 diferent meshes with their uvmaps adjusted so they'll only show one single leaf. I'll share it once I get the material right, now it looks okay but not quite there, but if you need it in a hurry send me a pm and I'll send it to you. You can do this with any software, there is nothing software specific, actually I started this tree following the guidelines of a tutorial for trees for blender and I don't use blender (yet), I did it in max, but it could be achieved in any soft.
http://scotchtapeworm3d.wordpress.com/2 ... poly-tree/ I took my own approach and used instances for everything, but is a great guideline
The original texture from the leaves is from cgtextures, modifying 4 different ones and doing a 2x2 array with them.

Re: some SSS tests with beta 2.55

Posted: Thu Oct 27, 2011 5:22 pm
by gilfanovruslan
Could you try to render a fog, please :)

Re: some SSS tests with beta 2.55

Posted: Thu Oct 27, 2011 5:31 pm
by telemmaite
I cant figure out how to get Wax/SSS for a candle. It just does not scatter enough i guess.

Re: some SSS tests with beta 2.55

Posted: Thu Oct 27, 2011 6:27 pm
by kubo
I've tried a quick fog with no success, I'm intrigued by what Radiance said, but I haven't had much time, I'll try tomorrow and see how it can be achieved, besides I'm quite interested too cause I was planning on using something alike for my scene.
PS about the candle watch out the scale it has a HUGE importance in SSS. The ones I didn't have the correct scale couldn't get a good result, I'll give it a try later too

Re: some SSS tests with beta 2.55

Posted: Thu Oct 27, 2011 8:12 pm
by telemmaite
You are right on the spot. I even use the scale parameter to boost the result. Now i have a proper wax material in my thread :) Thanks.

Re: some SSS tests with beta 2.55

Posted: Fri Oct 28, 2011 11:38 pm
by kubo
small update, I've got the other character's face ready and decided to give it a got at the material, this time is a diffuse material with SSS and in this case I've got all the textures more or less ready. Again, as the rest, all done from scratch manually. Hope you like it.

Re: some SSS tests with beta 2.55

Posted: Tue Nov 01, 2011 11:13 am
by kubo
well a couple more tests with my characters, still a lot of work to do, but SSS is looking so good I can stop "testing". The sunglasses are a specular with SSS for the rim. I think this will we the last tests of this scene here, I'll open a proper thread for the scene when I get to do some more "scenery".
Hope you guys like it.

Re: some SSS tests with beta 2.55

Posted: Tue Nov 01, 2011 7:22 pm
by kubo
I'm still working on the SSS effect, small tests using a plane as emmitter for a more dramatic effect, for him I've used a rgb colour for transmission and for her a map. He was rendered this time in PMC for about 5 min and her in PT for another 5