I know 2.71 hasn’t even officially been released yet, but in 2.72, there’ll be a new distribution model for glossy shaders, Ashikhmin-Shirley, and all three models have now been made available for the anisotropy shader too. I played around a bit and came up with this little comparison:
(Best to open each of these in a new tab to compare them easier)
As far as I can see, it’s a sort of middle-ground between GGX and Beckmann anisotropy – it spreads the darker values much better than Beckmann, but doesn’t have tails as long as GGX. As for the glossy, it seems very similar to Beckmann in the low-ish roughness values, but with very high roughness it’s a lot more like a diffuse surface (which I suppose is technically more accurate).
I actually don’t know anything about this new model, so if you can educate us all, I’d be keen to hear it.
For some more info, see the task on developer.blender.org
Oh… So much like. 2.71 can come and go as far as I’m concerned ;)
P.S. First time on this blog, and I have to say, very, very nice! I love the setup, and your posts and HDRs are deliciously sweet ;)
Thanks! 2.71 brought us smoke, baking and deformation motion blur though ;)
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