Is the process of calculating a material’s interface still valid with unbiased renderers like iray? E.g. The polygons of water touching a glass should have an ior of around say 0.88. The manual calculating of ior/ior always bothered me as it doesn’t account for dynamic situations. I’m guessing with iray you wouldn’t do this calculation and would instead mark the water as 1.33. Can anyone confirm this?
Thanks!
Nathaniel