New glossy translucent material

Discussion related to the LuxRender Material system, programming API and Scene file format.

Moderators: jromang, tomb, zcott, coordinators

Re: New glossy translucent material

Postby Lord Crc » Fri Nov 12, 2010 6:16 am

Here's a really quick test I did to see how it would work for a skin material. First just plain glossy, then glossytranslucent + internal absorption. It's subtle but it definitely looks more "alive" to me :)

Please note that the scale is wrong cause I didn't bother rescaling my monkey scene, so it's 2+ m wide that suzanne. So if you use it you need to adjust the absorption @ depth accordingly. Also this is without any "inner skin" for any subsurface scattering.

Still given how quick it was to set up I think it produces very nice results :)
Attachments
skintest-plainglossy.png
Plain glossy
skintest.png
Glossytranslucent
skintestmat.png
May contain traces of nuts.
User avatar
Lord Crc
Developer
 
Posts: 4447
Joined: Sat Nov 17, 2007 2:10 pm

Re: New glossy translucent material

Postby Lord Crc » Fri Nov 12, 2010 6:19 am

Here's a quick render I did of the above but setting the diffuse channel to black. Shows the effect of the translucent part.
Attachments
skintest-nodiffuse.png
May contain traces of nuts.
User avatar
Lord Crc
Developer
 
Posts: 4447
Joined: Sat Nov 17, 2007 2:10 pm

Re: New glossy translucent material

Postby paco » Sat Nov 13, 2010 2:27 am

Looks good :)

Pretty subtle effect but with a diffuse of 0.7 and a transmission of 0.7 you're only getting about 0.5 coming through ( with diffuse =0 you'll get 0.7 coming through). Maybe increase the transmission a bit?
paco
Developer
 
Posts: 456
Joined: Sun Feb 07, 2010 1:37 am

Re: New glossy translucent material

Postby Lord Crc » Sat Nov 13, 2010 4:54 am

Ah yes I forgot about the auto-clamping, good point. Though I quite liked the subtlety of it :)
May contain traces of nuts.
User avatar
Lord Crc
Developer
 
Posts: 4447
Joined: Sat Nov 17, 2007 2:10 pm

Re: New glossy translucent material

Postby jeanphi » Sat Nov 13, 2010 6:02 am

Hi,

However the effect is already quite strong, I never so any flesh transmitting that much light at 1 meter :)

Jeanphi
jeanphi
Developer
 
Posts: 6569
Joined: Mon Jan 14, 2008 7:21 am

Re: New glossy translucent material

Postby patro » Sun Nov 14, 2010 2:44 pm

Hi Paco

Jeanphi put to my attention that you developed this new material.. thank you for it ;)

I was the starter of the "LuxRender official feature request thread"
viewtopic.php?f=13&t=4373
please give a look if you find something interesting to work on ;)

I credit your work in this post:
viewtopic.php?f=13&t=4373&p=50860#p50860
--
Patro
User avatar
patro
 
Posts: 1798
Joined: Fri Feb 29, 2008 9:06 pm
Location: mount Etna

Re: New glossy translucent material

Postby paco » Thu Nov 18, 2010 1:12 am

shucks :)

Actually I just hacked together something so pitiful, that it annoyed jeanphi enough that he couldn't bear it anymore and had to fix it.

That was my cunning plan all along of course :)
paco
Developer
 
Posts: 456
Joined: Sun Feb 07, 2010 1:37 am

Re: New glossy translucent material

Postby patrickwalz » Thu Nov 18, 2010 10:07 am

social engineering is still engineering paco ;) -- either way you both got it done and it looks great!
patrickwalz
 
Posts: 75
Joined: Sun Mar 07, 2010 12:54 pm

Re: New glossy translucent material

Postby patro » Thu Nov 18, 2010 10:14 am

paco wrote:shucks :)

Actually I just hacked together something so pitiful, that it annoyed jeanphi enough that he couldn't bear it anymore and had to fix it.

That was my cunning plan all along of course :)


I'm pretty sure that the developers are busy enough... but if someone is able to provide a properly input... they are happy to discuss this work and add it to LuxRender.

what you can do now... for your material is a small tutorial, with some small renders that show how to use it... and how to setup the value to achieve some results ;)

PS: I agree 100% with patrickwalz
User avatar
patro
 
Posts: 1798
Joined: Fri Feb 29, 2008 9:06 pm
Location: mount Etna

Re: New glossy translucent material

Postby Dobz » Sat Dec 04, 2010 6:54 pm

The new glossy translucent material is looking very good, here's a quick render showing it on a tree:
tree.Scene.trans.jpg
User avatar
Dobz
 
Posts: 45
Joined: Sun Aug 01, 2010 3:16 am

PreviousNext

Return to Materials, API & Scene file format

Who is online

Users browsing this forum: No registered users and 2 guests