TomasWarren
07-20-2008, 01:38 PM
Hello all, i looked around a few sss threads but none that seemed to answer my question, it does seem as if quite a few people experience problems with the mr sss shaders in maya.
At the moment i'm following the gnomon video tutorials for the skin sss material. I've set up the fast simple sss shader on a sphere successfully, so now i'm trying out the skin shader on one of my characters but it's exhibiting some wierd behaviour. I'm sure i've connected all the nodes together correctly, and my lightmap has been created (i was having problems with that before).
The problem i'm having at the moment is that the diffuse weight of the fast skin shader doesn't seem to be working at all. The subsurface parts are coming through, and the overall colour/diffuse colour/ambient colour have an effect, but i've tried setting the diffuse weight to 0 and 1 and inbetween but it makes no difference
Another odd thing (to me, anyway) is that if i change the lightmap samples value of the shader to be less, the render gets brighter. I was under the assumption that the samples changes only the smoothness of the sss, not the brightness, but it has a drastic effect on the brightness.
eg at 64 (default) samples the render is very dark, showing only the sss effect
at 32 samples the result is much lighter and so on
I'm am a self confessed newbie to sss shading, so if anyone could explain where i'm going wrong that would be a great help- thanks!
At the moment i'm following the gnomon video tutorials for the skin sss material. I've set up the fast simple sss shader on a sphere successfully, so now i'm trying out the skin shader on one of my characters but it's exhibiting some wierd behaviour. I'm sure i've connected all the nodes together correctly, and my lightmap has been created (i was having problems with that before).
The problem i'm having at the moment is that the diffuse weight of the fast skin shader doesn't seem to be working at all. The subsurface parts are coming through, and the overall colour/diffuse colour/ambient colour have an effect, but i've tried setting the diffuse weight to 0 and 1 and inbetween but it makes no difference
Another odd thing (to me, anyway) is that if i change the lightmap samples value of the shader to be less, the render gets brighter. I was under the assumption that the samples changes only the smoothness of the sss, not the brightness, but it has a drastic effect on the brightness.
eg at 64 (default) samples the render is very dark, showing only the sss effect
at 32 samples the result is much lighter and so on
I'm am a self confessed newbie to sss shading, so if anyone could explain where i'm going wrong that would be a great help- thanks!