Unreal Engine 5 Announced + PS5 Demo

[DonFerrari]

CGI-Quality said:

drkohler said:

Full RT puts a serious stress on the gpu doing all the ray thingies. UE5 already puts a serious stress on the gpu in this demo. If that same demo were done with full RT, it would seriously tank framerates. I think a lot of people will be pissed once games come out with full RT, but with serious performance problems. Cerny hinted at this in his talk when he came to the different levels of RT on one of his slides.

Getting clues from a tech forum, the UE5 demo also runs on the XSX, but with reduced details due to the advantage of the PS5's ssd solution (and no, the reason is NOT that the ssd is faster, it's about all the hardware "behind" the ssd which does the real work. We still don't know anything about the hardware behind the XSX's ssd, but this demo might be a small glimpse that it is not be as thoroughly implemented).

One thing I'd be interested to know is how much disk space this demo used. A ton of streaming was involved.

You don't need full raytracing for it to be implemented efficiently and many games next gen will have it in some form and run just fine.

We had Mark Cerny talking on the GDC video something from like 5 levels of RT implementation that some games on PS5 were achieving the 4th level with "relative small impact" to performance. So I'm cautiously optmistic on what RT can achieve this gen.