u/wongstain r/GraphicsProgramming • Recommends
On “Real-time path tracing with global illumination and ambient occlusion”
Brigade has been around for a while (your video is from 2013). I think this is their latest video (2015): link to this video
And here is their website: https://brigade.otoy.com/ . I don't know what otoy is but they seem to be part of them now.
Finally, here's a great resource for path tracing (was where I first learned about the brigade renderer): http://raytracey.blogspot.com.au/