Really cool Work… im learning UE4, im a programmer, i was reading the articles you mentioned and figure out that they offer this software ( toolbag 2) that can archive the PBR system in any given model, i was wondering… do you guys used toolbag 2 to archive this? or you just figured out how to implement the math on blueprint? If that so(or not) can you share the proyect with the comunitty this will very helpfull in order to integrate PBR system to UE4!!