In large part, this initiative is an implementation of the 2002 paper “Simple Nested Dielectrics in Ray-traced Images by Charles M. Schmidt and Brian Budge” and is meant to solve one problem: efficient, physically-plausible rendering of nested dielectric surfaces in production.
It’s also capable of spectral dispersion, direct refraction of light sources, production-feasible ray traced blurry caustics. It has a few different optimization techniques built in to improve render times, including Russian Roulette and energy tracking and clamping throughout the ray tree.
Since it’s release into the Arnold community yesterday morning, Jonah has already received feedback from users who have modified his code — JF Nested Dielectric now works in Linux, too.
Documentation (PDF with lots of images)
Git repo for source code, builds, and licensing info
JF Nested Dielectric is Copyright (c) 2014, Psyop Media Company, LLC and Jonah Friedman
*Please note, while Psyop greatly appreciates your feedback we can not provide tech support*