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Medi8or
11-14-2008, 08:19 PM
[ZBrush waxey material in Lightwave]
Indeed. Let's not let this 'challenge' be forgotten (if only to get CMT to render his models more in LW ;))

I had a few ideas, but perhaps more 'nodey' people than me would have better ones:

A nice waxey SSS shader (obviously)

An 'inverse' occlusion shader (that renders the gouges white instead of black).
- This should also affect the specular channel (shiny on edges, matte in crevices)
- This should also affect the above SSS channel (translucent on edges, opaque in crevices)

Any thoughts (corrections) ? :thumbsup:Just one thought - why not try Dponts curvature node instead of occlusion? ( http://pagesperso-orange.fr/dpont/plugins/nodes/Additionnal_Nodes_2.html )
Just started playing a bit with it, and I think it can give a result pretty close to ZB render with a bit of tuning..

(this head is pretty big, so distance in SSS-node and scale in curvature-node needs to be reduced for a normal scale model..)

WilliamVaughan
11-14-2008, 08:46 PM
extremely close...very cool!

archijam
11-15-2008, 03:49 AM
Nice one! Clever occlusion alternative ..

The colour is close, but needs more orange/brown ..

http://www.pixolator.com/zbc/attachment.php?attachmentid=58641
(Attached only as googled zbrush reference)

archijam
11-15-2008, 05:56 AM
There is an attempt at presetcentral (http://www.presetcentral.com/preset/80/), but the falloff for the crevices is not as convincing as your example, Mediator.

It uses the 'grit' node addon (see link above).

Perhaps the gradient beckgound from Zbrush would also help in judging these! :)

SandroBenigno
11-15-2008, 12:48 PM
Great, Medi8or! I make a setup based on yours.

A changed the colors, specular, glossines and used the occlusion node.
The "Dponts curvature" seems to be to be more soft... but, anyway... is a test.

Now I will test this with the "Curvature" and will post here after.

I has noticed one thing... on the scene, the light needs to be a dome, with a rotation of 45 on pitch axis and an angle of 20 on light setup.

[ Gradient Backdrop:
Zenith,Sky and Ground: 024,024,024.
Nadir: 070,070,070.
Ground Squeeze: 5.0 ] :p

SandroBenigno
11-16-2008, 03:40 AM
Now I'm mapping the exposed areas and the inaccessible areas.

The best way to do this seems to be it: using both (occlusion and curvatures) at the same time.
In some cases the curvatures difference won't represent the inaccessible areas (attached).
I liked the "curvatures" so much... thanks for pointing that. Veeery cool! ;)

SandroBenigno
11-16-2008, 02:03 PM
Tests and surface file. ;)

Note: The "Curvatures" node doesn't work with an object with multiple layers that have the same surface (skull and jaw, for example).
So, in that case, just use two or more (surface1, surface2, etc...) with the same setup. It will work.

Hugs!

archijam
11-16-2008, 03:05 PM
Nice work, can't wait to have a play with this! :thumbsup: : thumbs up :