mightcouldb1 Posted April 23, 2013 Share Posted April 23, 2013 I have watertight geo with a concave top. You can visibly see the edge of the concave part surface which doesn't seem to be receiving light. I am using the standard mantra surface shader with subsurface scattering turned on. Any idea why this is happening? Cheers! Quote Link to comment Share on other sites More sharing options...
mightcouldb1 Posted April 25, 2013 Author Share Posted April 25, 2013 So I find that the attenuation density is the cause of my problem. I had it way too low, but I'm still curious why it would create the results you see above if anyone has some insight. I'm attaching a hip file if anyone wants to try their hand at it. I found this info on the sidefx forums http://www.sidefx.co...ight=subsurface See if this helps.. - enable refraction - set in/out IOR to 1 - create a channel ref: Subsurface Attenuation Density -> Refract Attenuation Density - turn off Settings->Conserve Energy More info (courtesy of AndrewC) The single scattering only accounts for a single interval in the object. You can compensate for the missing paths by adding in a refraction with an attenuation that matches the SSS atten. Unfortunately "Conserve Energy" doesn't properly handle this case, so you'll need to turn it off. I tried this and it didn't seem to help much. Cheers! sss_shadingproblem.hipnc Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.