What UE4 can do is very impressive. But when it comes to real time photo realism I think path tracing is even more impressive. For example this Brigade 3.0 demo: https://www.youtube.com/watch?v=BpT6MkCeP7Y
I'm not that impressed, that noise is really anoing and the detail level is not that high. There are no interesting surfaces and no demo of excessive refraction or reflection. I'd like to see how a stature of glass would look like with this renderer.
Why don't they add a very cheap real time renderer that produces fast and high resolution images and later add the low resolution output from that path tracker? I guess that would make noise a lot less distracting, as there where no black pixels anymore.
