I'm doing a scientific research about rendering and I was wondering if there is a way to recreate polarisation in arnold. I know that it already includes "exotic" stuff as the wonderful thin film shader. I hacked a bit a glass shader using normal directions for changing transparency and scatter, but I'm curious to know if there is a more correct approach to it. Not to mention that in theory, a render capable or working also with polarised light can obtain more realistic renderings. (or not ?). Very curious to hear your take on that