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Re: Simple Renderings Thread

Posted: Sat Nov 06, 2010 12:10 pm
by Zom-B
Ok, a updated version of the head rendering.
I blended 3 materials together with some custom painted maps, faking a little SSS by using Diffuse Transmitter.
Also some eyelashes were added and lightning improved a tiny bit, output is still 100% Indigo, no post-pro.

Thanks to the help of fused I now can use the "centralized" Displacement map, here is the quick how-to:

The C value of Disp. Texture needs to be minus 1/2 of B.
So a disp. with value b = 0.01 needs a c = -0.005 to work fine with pure 128 RGB gray not displaced,
higher values (brighter) get etruded in normal direction, and lower values (darker) aginst the normal direction.

I also dropped the bump map totally, here the result:
head.jpg

Re: Simple Renderings Thread

Posted: Sat Nov 06, 2010 12:45 pm
by neo0.
Wow, this looks like a photograph. Amazing work, Pixie. If I had one criticism it might be that the left side of the face looks a little too bright, but that might simply be on purpose. :)

Re: Simple Renderings Thread

Posted: Sat Nov 06, 2010 2:36 pm
by Zom-B
If you talk about the face, then its by me not pixie :roll:

The Histogram tells me that there is overburning of the image!
Sounds like your monitor needs calibration, the right side of the face is maybe even to dark :lol:
the bright/dark style is actually wanted btw...
screenshot.1.png
screenshot.1.png (927 Bytes) Viewed 2213 times

Re: Simple Renderings Thread

Posted: Sat Nov 06, 2010 4:26 pm
by neo0.
The left side you mean. ;)

Re: Simple Renderings Thread

Posted: Sat Nov 06, 2010 5:05 pm
by Stromberg
neo0: He said the right side might be to dark -.-

Zom-B: Great work btw, i would love to see it on a diffrent face model aswell, cause i have seen that some materials looks sweet on one model, but breaks apart when applied to another :)

Re: Simple Renderings Thread

Posted: Sat Nov 06, 2010 5:09 pm
by Borgleader
neo0. wrote:The left side you mean. ;)
The right side of the face is on the left side of the image...

Re: Simple Renderings Thread

Posted: Sat Nov 06, 2010 5:12 pm
by Stromberg
Ahaha, didnt notice that one, seams neo0 outsmarted me there :)

Re: Simple Renderings Thread

Posted: Sat Nov 06, 2010 11:49 pm
by Zom-B
Stromberg wrote:Zom-B: Great work btw, i would love to see it on a different face model as well, cause i have seen that some materials looks sweet on one model, but breaks apart when applied to another :)
This whole material setup is based on 5 textures and 3 materials blended together, I hoped to learn some material workflow that can be applied to every such human situation.

I still have a few plans with this boy:
- blend in a SSS material for (best visible for ears)
- open eyes
- A nice Haircut via Hair2Mesh technique and also some facial Hair.

Re: Simple Renderings Thread

Posted: Sun Nov 07, 2010 1:53 am
by CTZn
Good approach with faking sss. I'd paint tatoos on this guy :twisted:

I remember Ono suggesting the use of a glossy transparent material for basic skin, and with a transmittance layer (the original albedo map probably) for skin color details. Blended with another material of course.

Is there an exponent map ? Probably, but if not you may use the displacement map, with cavities being more shiny than exposed surfaces, unless its the other way around...

I have seen Oren-Nayar materials in the gallery of the head ressource, but the surface details should alleviate the need for this. Hint ?

Re: Simple Renderings Thread

Posted: Sun Nov 07, 2010 4:43 pm
by Zom-B
Ok, after a lot of testing here a pure Glossy Transparent version:

Re: Simple Renderings Thread

Posted: Sun Nov 07, 2010 6:13 pm
by OnoSendai
Interesting, thanks Zom-b. There seems to be a bluish tint around the edge. Did you use absorption-layer-transmittance for the skin colour?

Re: Simple Renderings Thread

Posted: Sun Nov 07, 2010 6:14 pm
by neo0.
Give him a chinstap beard :lol:

Re: Simple Renderings Thread

Posted: Sun Nov 07, 2010 6:16 pm
by Borgleader
I say plug him into the matrix.... like Neo :wink:

Re: Simple Renderings Thread

Posted: Sun Nov 07, 2010 6:17 pm
by Doug Armand
That is one sweet bit of texturing.

How spooky would it be if he opened his eyes and said boo! :shock:

Re: Simple Renderings Thread

Posted: Sun Nov 07, 2010 9:26 pm
by hcpiter
Zom-B- very good, material of head in first render looks so real.