Sat, Jan 11, 9:42 AM CST

Renderosity Forums / Vue



Welcome to the Vue Forum

Forum Moderators: wheatpenny, TheBryster

Vue F.A.Q (Last Updated: 2024 Dec 30 8:14 pm)



Subject: SSS & V3


Trepz ( ) posted Sun, 27 January 2008 at 11:48 PM · edited Sat, 11 January 2025 at 7:45 AM

file_398644.JPG

I think the problem is obvious,but not so much how to fix it.I use SkinVue for V4,but wanted to give it a go myself for V3. It is obviously to do with the trans,but...

"Many are willing to suffer for their art. Few are willing to learn to draw."


thefixer ( ) posted Mon, 28 January 2008 at 3:42 AM

I had this once but can't remember how I fixed it, I think it was something in the Vue preferences but can't be sure!
If I remember I'll get back!
Sorry, I'm well known for my shit memory!!

Injustice will be avenged.
Cofiwch Dryweryn.


Trepz ( ) posted Mon, 28 January 2008 at 3:55 AM

Yeah,me to(;...........i think:P

"Many are willing to suffer for their art. Few are willing to learn to draw."


bruno021 ( ) posted Mon, 28 January 2008 at 6:25 AM

Are you using SSS on the eyelashes & eyebrow materials?  Since they use a transmap, you have to tick the "use infinitely thin model" checkbox in the SSS tab.



Trepz ( ) posted Mon, 28 January 2008 at 7:18 AM

file_398659.JPG

Thats damn odd man.I didnt use it at all as I thought it would cause weird things to happen.I ticked it and used "infinitely thin model and it fixed it right up.you ARE the man Bruno.You should have a GOLDEN cow as your AV :D:D

Besides that,hows she lookin?

"Many are willing to suffer for their art. Few are willing to learn to draw."


bruno021 ( ) posted Mon, 28 January 2008 at 7:30 AM

She looks awesome. Love her determined expression. Some ass is about to be kicked.



Trepz ( ) posted Mon, 28 January 2008 at 7:41 AM

Yeah that is Ava for V3 by Vali.She is hot man :P My all time favorite V3 morph..only one i use i think,normally i just make something up. The skin is...i think Orion1167..not sure..It was just a test anyway (; Thanks.

"Many are willing to suffer for their art. Few are willing to learn to draw."


thefixer ( ) posted Mon, 28 January 2008 at 8:11 AM

That texture is superb mate, especially like that scar, cool!!

Injustice will be avenged.
Cofiwch Dryweryn.


AboranTouristCouncil ( ) posted Mon, 28 January 2008 at 9:47 AM

Very nice scar. Most realistic I've seen in a while.

...Insert some witty or thought provoking comment here...


Trepz ( ) posted Mon, 28 January 2008 at 10:28 AM

file_398677.JPG

Alright,this is the almost final i think.the lower I set the refraction index on the skin,the worse my bump got??? Human skin has a refraction index of like 7 or 800nm so whatever for that:P I stuck with Vues .74 :D

"Many are willing to suffer for their art. Few are willing to learn to draw."


bruno021 ( ) posted Mon, 28 January 2008 at 11:06 AM

Negative refraction index is not a good idea. Are you sure it even exists on our small planet? Nothing is supposed to have a refraction index <1, which is the default for air. I think this is why you se artifacts in the bump, and the SSS effect is lost imho.



Trepz ( ) posted Mon, 28 January 2008 at 11:34 AM

I have not clue man,I looked up the refraction index for skin and thats what i got...Thats why i said "whatever for that" I do not think anything has a negative refraction index either.but positive values screw up the bump big time...looks like she is covered in sand,like you see on the left edge of her face.as for the SSS being gone..the more i look at it i have to agree you are right.The first image did have that "healthy glow" that skin does.but the second one i think has a more natural fleshy color.

"Many are willing to suffer for their art. Few are willing to learn to draw."


bruno021 ( ) posted Mon, 28 January 2008 at 12:06 PM

You could try changing the material size to 0.5 to tighten up the skin texture. As for bump, you could use a blending node in the function editor, and blend your texture bump with some very small granite noise. It can give good results.



silverblade33 ( ) posted Mon, 28 January 2008 at 5:27 PM

Hey guys, what's a reaosnable way to do SSS for skin? noobling that I am at that :D

what I've been testing:

depth 0.001 feet (I like feet as useful scale, it's approx 0.5 millimetres deep, sounds about right for skin depth light??)

83%
135 refraction
0.05
and colour absorption a deepish red 172 / 49 / 49
Sound about right? :)

"I'd rather be a Fool who believes in Dragons, Than a King who believes in Nothing!" www.silverblades-suitcase.com
Free tutorials, Vue & Bryce materials, Bryce Skies, models, D&D items, stories.
Tutorials on Poser imports to Vue/Bryce, Postwork, Vue rendering/lighting, etc etc!


bruno021 ( ) posted Tue, 29 January 2008 at 2:43 AM

I generally use 1 to 2 mm depth, multiple 60%, refraction 1.000, absorbtion 10% mini forward, absorbtion  filter colour red,  scattering filter colour: I copy/paste the overall colour of the colour channel.



dburdick ( ) posted Tue, 29 January 2008 at 4:00 AM

I've never been able to get convincing results using Vue's built-in SSS on Skin.  I think it's because Vue's current implementation of SSS does not allow the use of SSS maps so it gives the entire skin surface a uniformly waxy look.  Perhaps in Vue 7 we might be able to convince e-on to allow the use of a variable SSS node so that SSS can be applied properly to human skin.  But I like the examples shown so far here.


dburdick ( ) posted Tue, 29 January 2008 at 8:31 AM · edited Tue, 29 January 2008 at 8:38 AM

file_398741.jpg

Here's a quick little comparison of the SSS approaches for Skin in Vue.  The SSS is only applied to the face material in all images - the ears and neck have no SSS. The image on the upper right uses Fake SSS using diffuse maps (as found in SkinVue).  It's a pretty good fake except the Skin lacks that translucent quality.  Image 3 on the lower left is 100% Vue SSS.  This one has a nice translucent quality to it but the skin details are washed out.  Image 4 on the lower right uses Vue SSS as a layer over the fake 15% SSS base material.  The Vue SSS Alpha was set to minus 80%.  This image has a nice balance between translucent looking skin while preserving important skin details.  As a side note, I tried using Alpha maps for the Vue SSS layer but it doesn't work.  Vue SSS does not currently allow the use of a variable alpha.  However, you can blend it as a whole by using it as layer as I did with Image 4.  One other note, Vue SSS does not properly behave on objects containing multiple material zones.  So for example, the V4 head which contains a face material and an eye lash material  is not treated separately from a SSS standpoint even if you disable SSS for the eyelash material.  The workaround for this is to split the Head object into unique sub-objects using the Vue object split function and then applying the Vue SSS material to the Face sub-object. 


Privacy Notice

This site uses cookies to deliver the best experience. Our own cookies make user accounts and other features possible. Third-party cookies are used to display relevant ads and to analyze how Renderosity is used. By using our site, you acknowledge that you have read and understood our Terms of Service, including our Cookie Policy and our Privacy Policy.