New SSS test.

[CoreyJAvitar]

Hmm, I wanted to see if it would work with animation:
http://www.ponymoon.com/murphy/horseCSS2.mov
whatd'ya think?

[oldskoolPunk]

Im wondering if we are all aware of what SSS is supposed to simulate, and what simulated SSS is supposed to look like.....

[FreakyDude]

well, nice quick effect i guess, but i dont think you should use it on this donkey.
sss is to simulate skin, or the way the light behaves when it bounces of the skin.
Experts, feel free to correct me if I'm wrong.
But the main point is that if you use it, this donkey would have no fur. He/she/it would be buttnaked, just like now.

[Ollarin]

sss is to simulate skin, or the way the light behaves when it bounces of the skin.
SSS (Sub Surface Scattering) is how light is absorbed into a material, how the light scatters into it. It's not for skin per say.
Some examples that come to mind, Wax, Light will pass through it, but not like glass, the wax absorbs some of the light.
Milk has the property too. Alot of materials have it.

(Search for a wiki on SSS. You'll get a better explanation.)

[Yecire]

Well, I'm no expert . . . but here is what I've learned in my research on the topic:

The name says it all (or, most of it anyway). Sub-Surface refers to the fact that this 'effect' results from the interaction of light with an object/material, not at the surface, but beneath it. Scattering refers to the high diffusion (spreading) of the light in response to the inner parts of a particular element.

This effect can vary in it's appearance depending upon the actual material . . . skin consists of multiple different thin layers, whereas wax or milk are somewhat consistent in their composition. All allow some light to penetrate the surface, bounce around the inside a bit, and emerge at seemingly random points.

The fake SSS used on CoreyJAvitar's donkey can produce some decent results for specific situations and with a lot of tweaking & guesswork. But only true SSS simulation can accurately depict the many different possible materials (different types of skin, wax, marble, plastic, etc.).

The look of skin in particular is hard to recreate with this technique, which is what would be needed for an animal. And of course, as FreakyDude pointed out, he would need to be 'buttnaked'. Since hair would prevent one from seeing the SSS effect (or the occurance of it at all, most likely), we'll just have to pretend that this poor guy has been shaved. :eek:

Anyway, cool little character CoreyJAvitar!:thumbsup:


BTW: For any who have an nVidia graphics card in their system, you have a true SSS-capable renderer available to you. nVidia's GPU-based renderer Gelato is free, and can be used with Blender through an export script. Search the Gelato (http://www.nvidia.com/page/gz_home.html) & BlenderArtist (http://blenderartists.org/forum/) forums for more info.




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