Flesh Dragon - Indigo 0.7t1 SSS test

radiance · January 13, 2007, 5:18pm

Hi all,
i’ve been doing some tests with the new indigo 0.7 test 1 release,
which has experimental support for Subsurface Scattering.
It’s quite slow (noisy), rendered for 12 hours,
onosendai is working on improving the speed in the new code.
The model is the famous Stanford PLY dragon.

i’m going to render a jade material version on a small network next,
try and get a noise free image.
if anyone wants the xml to play with, let me know…

Greetz,
Radiance

Cuby · January 13, 2007, 5:30pm

Nice model and materials. It’s much too noisy though.

radiance · January 13, 2007, 5:42pm

it’s just one material on one mesh object,
here is the material code:

   &lt;medium&gt; 
      &lt;name&gt;flesh&lt;/name&gt; 
        
      &lt;ior&gt;1.45&lt;/ior&gt; 
      &lt;cauchy_b_coeff&gt;0.0&lt;/cauchy_b_coeff&gt; 
         &lt;absorption_coefficient_spectrum&gt; 
       &lt;rgb&gt; 
                     &lt;rgb&gt;2 0 10&lt;/rgb&gt; 
               &lt;/rgb&gt; 
         &lt;/absorption_coefficient_spectrum&gt; 
      &lt;precedence&gt;20&lt;/precedence&gt; 
        
      &lt;subsurface_scattering&gt; 
               &lt;scattering_coefficient_spectrum&gt; 
         &lt;rgb&gt; 
                     &lt;rgb&gt;2 12 1&lt;/rgb&gt; 
               &lt;/rgb&gt; 
         &lt;/scattering_coefficient_spectrum&gt; 
         &lt;phase_function&gt; 
            &lt;uniform&gt;&lt;value&gt;4&lt;/value&gt;&lt;/uniform&gt; 
         &lt;/phase_function&gt; 
      &lt;/subsurface_scattering&gt; 
   &lt;/medium&gt; 
    
   &lt;material&gt; 
      &lt;name&gt;default&lt;/name&gt; 

      &lt;specular&gt; 
         &lt;transparent&gt;true&lt;/transparent&gt; 
         &lt;internal_medium_name&gt;flesh&lt;/internal_medium_name&gt; 
      &lt;/specular&gt; 

   &lt;/material&gt;

greetz,
radiance

artisanicview · January 13, 2007, 6:05pm

radiance: Yeah, please post the XML. I want to see what I can get with in 12 hours. You know a good material editor for Indigo? Is running on Linux or OSX. In the official site I can find only a .zip package.

artisanicview · January 13, 2007, 6:06pm

radianace: you are really fast. You posted the XML before to finnish my post!

artisanicview · January 13, 2007, 6:10pm

And from where to download the newest beta?
I try to follow the link " Indigo v0.7 test1 available with an impressive list of new features", Im getting this:
You are not authorized to view this resource.

What are this new features?

cowdude · January 13, 2007, 6:18pm

I don’t think I’ve seen that attempted in indigo. Looks like jelly or that stuff that comes with those alien toys that grow when you stick them in water.

radiance · January 13, 2007, 6:21pm

here’s the forum link: http://www.indigorenderer.com/joomla/forum/viewtopic.php?t=1037
it’s windows only though, but indigo runs under wine under linux. (on intel platforms)
altough the new 0.7test1 has’nt been tested on wine as far as i know.
and it’s quite buggy
it’s not even a beta, consider it alpha.
new features are:
SSS + participating media (experimental), new media system, polarisation (experimental),
camera bloom, mem usage optimisation, autofocus, a glossy transparent material, instancing, a blend_material (allowing material trees)

EDIT: here’s my complete scene file: http://www.indigorenderer.com/temp/dragon1.zip
place it in indigo directory and fire up with: indigo -t 2 dragon1.zip (2 = threads, 2 for dual core or dual cpu)
or use network rendering with multiple pc’s as such:
on a server: indigo -n m dragon1.xml
on one or more clients: indigo -t 2 dragon1.xml -n s -h <server_ip>:7777

you’ll have to download the dragon_vrip.ply file from the stanford ply archive (check google)
and place it into the indigodir too.

greetz,
radiance

Liquidshield · January 13, 2007, 6:33pm

I really wish that Indigo was for osx, Is Indigo ever going to be realesed for different OS?

radiance · January 13, 2007, 6:44pm

ports to linux and osx will happen in the future,
after the core engine and features is complete and well debugged.
you can’t translate an unfinished book to other languages

greetz,
radiance

artisanicview · January 14, 2007, 8:23am

radiance: thanks for scene. I makeit a try using the following command:

wine indigo.exe -t 2 dragon1.zip

but Im getting the following error message:

SceneLoaderExcep: failed to load XML doc from path “dragon1.zip”: Error document empty. Line 0, column 0.

It seems like Indigo 0.7 cant open zip files under wine?

TheANIMAL · January 14, 2007, 8:31am

reminds me of a cross between one of those snow balls you shake up and a lava lamp, but in a dragon shape

dunno whether i can see the sss unless its all sss but a light source from behind would make it clearer, and less noise as everyone else has pointed out

cowdude · January 14, 2007, 9:23am

How many hours was that render? What are your system specs?

artisanicview · January 14, 2007, 9:43am

Well beacouse Indigo is an unbiased renderer for producing noiseless renderings is needed a big amount of time.

P.S. A better SSS test you can see here: http://blenderartists.org/forum/showthread.php?t=86672&highlight=indigo

mzungu · January 14, 2007, 6:09pm

I’d think you’d get a better SSS effect if the lightsource were above and a smidge behind the model… looking forward to the jade version!

radiance · January 15, 2007, 10:02pm

it was on a dual core 3.2GHz pentium D.
as said in my post this is experimental alpha SSS code and that’s why it’s slow and noisy,
don’t take these rendertimes into account for indigo in general

radiance

Ubuntuist · January 16, 2007, 4:02am

It seems to run under wine ok but exporter for blender is not up to date

artisanicview · January 16, 2007, 4:32am

How to managed to run Indigo 0.7beta under Wine? Personally Im gettying errors when I try to open files. See above.

Ubuntuist · January 16, 2007, 4:47am

It seems that Indigo itself works but current exporter makes xml files that are no longer correctly formatted.

I tested shortly with simple_test.xml that is included with indigo:

wine indigo.exe testscenes/simple_test.xml