@K0K0ze@julienduroure Probably because IOR applies to other surface effects besides Transmission... KHR_materials_specular, KHR_materials_volume, and other extensions in development.
@TheKristofLovas @stoxophone Hi Kristรณf! A few people over on Polycount are interested in paying for your FWVN materials. But the gumroad seems inactive. Any chance of resurrection?
Congrats on Sr Tech Artist btw!!