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Posted: Sun May 11, 2008 11:07 pm
by BbB
It's S&M velvet.

Posted: Sun May 11, 2008 11:24 pm
by PureSpider
rofl :D :lol:

Posted: Mon May 12, 2008 3:17 am
by Kyokutan
I like the first silk shot...the second looks more like latex or porcelain

Posted: Mon May 12, 2008 5:28 am
by CTZn
I'm fancy giving velvet a try.

Theorically Oren-Nayar + extra-low-ior phong should do... I'd add bump only when the surface looks ok.

Posted: Mon May 12, 2008 8:39 am
by Kram1032
the strange (well, maybe not THAT strange^^) thing is, that you can't find any good reference shots, with a closeup of the structure. Only lots of shots from things, made of velvet or partly with velvet.... Or women who lack of velvet or anything that'd come close to it :shock:

Not easy to make a bump for velvet, I guess...

Posted: Mon May 12, 2008 10:30 am
by BbB
All I know is that the reflections of velvet have a really strange fall-off due to the structure of the fabric, with very sharp transitions from one colour to another and back depending on the angle...

Posted: Mon May 12, 2008 12:13 pm
by StompinTom
almost seems as if it turns white or 'dusty' as the viewing angle gets perpendicular to the normal of the material... brighter too almost. it sometimes seems to have a weird glow....

gotta do some tests!

Posted: Mon May 12, 2008 2:39 pm
by CTZn
BbB wrote:depending on the angle...
Wich means: anisotropic. That's why the effect is so hard to catch, and bump mapping strictly necessary.

Velvet is silk, basically, isn't it ? I have a synthetical sample in front of me, it's quite old and it appears that the threads are sewed on a rather specular surface (a synth fabric). This substrate can be also determinant for the final appearence...

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Just for the pleasure of the eyes, if I may:

Image

Because BbB you are close to the closest approximation of velvet possible, I think. Congrats from me.