Physically Based Rendering

Hello people!
I was thinking if someone has made an add-on/script/example for PBR in BGE. If so, please, show it here! Anything will be useful;)

Here’s a video: https://www.youtube.com/watch?v=3H_QfoaeNys
ther’s also a post from this guy who made PBR shader in bge but i can’t find it :no: