https://youtu.be/HSmm_vEVs10?t=69 As you can see in the video, a research team has learned to ‘clean up’ low sample renders fast enough to run in real time, at shockingly high quality. It fails a bit on sharp reflections, fast motion, and very low light, but all rendering methods have trade offs. How long until we start seeing path traced render pipelines in game engines, specifically UE4?
The benefits should be obvious: 100% dynamic lighting. No more baking. Characters with bounce lighting. No pixelated shadows. And so on.