Indigo Renderer Forum

Posted: **Wed Feb 14, 2007 9:08 am**

SSS is such a great feature, yet, i think, hard to handle.
i tried around to achieve skin quality by hand. i am not too far, but getting closer.
somehow the dermis and epidermis stuff didn´t work too good for me.

i know that taking the model of a mummy is not the most adequate thing for sss, but that was what i had ready for testing. the model was done in blender. i will rework the teeth, once i have the skin shaders correct.

i wanted to see the pure sss, without any shininess and stuff. i will post my progress, if anyone is interrested.
looking at the ear to the right shows, that everything is quite transparent at the moment.

Posted: **Wed Feb 14, 2007 9:35 am**

wow ! ... would you mind sharing your xml-material?

Posted: **Wed Feb 14, 2007 3:06 pm**

The material looks so perfect I could touch it.

Posted: **Wed Feb 14, 2007 3:58 pm**

That dude is real ugly

Posted: **Wed Feb 14, 2007 4:20 pm**

I second Manitwo!!! plz plz, xml material!

I second ONO, that guy scares the shit outta me!

Posted: **Wed Feb 14, 2007 4:46 pm**

sure, thanks for the replies.
It´s pretty simple though, main thing is the ior = 1.

Code: Select all

<medium>
	<name>scatter</name>
		
		<basic>
			<ior>1</ior>
			<cauchy_b_coeff>0.0</cauchy_b_coeff>
			<absorption_coefficient_spectrum>
				<rgb>
					<rgb>6 36 50</rgb>
				</rgb>
			</absorption_coefficient_spectrum>
			
			<subsurface_scattering>
				<scattering_coefficient_spectrum>
					<uniform>
						<value>30</value>
					</uniform>
				</scattering_coefficient_spectrum>
				
				<phase_function>
					<uniform/>
				</phase_function>
			</subsurface_scattering>
		</basic>
</medium>
    
<material>
		<name>skin_test</name>

		<specular>
         		<transparent>true</transparent> 
         		<internal_medium_name>scatter</internal_medium_name> 
      		</specular>
</material>

Posted: **Wed Feb 14, 2007 5:12 pm**

Cool head !!
Do u plan to texture it ?

Cheers
Dom

Posted: **Wed Feb 14, 2007 5:15 pm**

yes i plan to texture it. but first the basic skin depth has to be correct.

Posted: **Wed Feb 14, 2007 5:24 pm**

Ok, for the depth try an higher value for <scattering_coefficient_spectrum> and use <glossy_transparent> instead of <transparent> to use an ior value higher than 1 (ie: between 1.3 and 1.5 i think) but there are some energy loss problem with this setup.

Cheers
Dom

Posted: **Wed Feb 14, 2007 5:33 pm**

Isigrim, thnx for sharing the material

Posted: **Wed Feb 14, 2007 8:11 pm**

domparis wrote:Cool head !!
Do u plan to texture it ?

Cheers
Dom

Can we use texture map with SSS material?

Suvakas

Posted: **Wed Feb 14, 2007 8:29 pm**

suvakas wrote:
domparis wrote:Cool head !!
Do u plan to texture it ?

Cheers
Dom
Can we use texture map with SSS material?

Suvakas

not right now...
But it would be useful...
I just have to work out how to do it, probably some kind of local modulation of the absorption coefficients (similar to what Jensen does)

Posted: **Wed Feb 14, 2007 8:57 pm**

I just have to work out how to do it, probably some kind of local modulation of the absorption coefficients (similar to what Jensen does)

nice to hear it

Dom

Posted: **Wed Feb 14, 2007 11:39 pm**

very interesting material Isigrim

ciao
torolf

Posted: **Wed Feb 14, 2007 11:50 pm**

thanks for sharing Isigrim!

Indigo Renderer Forum

Another SSS Test

Another SSS Test