According to DICE devs (Battlefield V), RT was up to now being developed on non-RTX cards. NVidia provided them the RT SDK, and it does run on previous gen GPUs, but slower and with not all of the effects being possible at their fullest.Chief Blur Buster wrote:Those realtime shadows of forests in Crysis was stunning, genre-defining, while it grinded 2007-era GPUs like rocks-in-a-blender.
Maybe "But can it run 2077?" will be the new "But can it run Crysis?" .... It could, especially if raytraced graphics looks even better than that gameplay trailer. Especially on a rainy night, with all those neon reflections!
RTX cards have by now made it to the devs, so it's almost certain that the effects are going to look better in the end than in those showcase trailers.
However, I still think the perf impact will be huge. The RT parts of the GPU are not completely independent from the rest of the silicon. If you do RT, rasterisation and shader perf is gonna suffer. Because of that, the RT effects will be turned off or severely dialed down for many elements of the game even on RTX cards (objects with complex geometry for example will be culled, some surfaces will have no RT at all if the devs think no one will be actually looking at them.) So when nvidia says stuff like "RT allows you to look into an NPCs eyes and see the world reflect in them", I simply don't believe them. Yeah, you could do that, but nobody in their right mind would waste RT to get the world to reflect on someone's eyes during normal gameplay...
I think we're going to see very polarized reactions to RTX in general in the first gen of RTX GPUs. Games are very, very good these days at faking many of the things RT is good at, so many people will most probably perceive the difference as too minimal to justify the perf hit. With future generations of RTX, we'll get closer to full RT, and that's when the difference to shader trickery will become really large. Because let's face it, when you look at Battlefield V with RTX on vs off, it's not like the non-RTX footage looks really that much worse. It still looks amazing, and the RTX stuff looks more like "well, nice to have but I can do without", rather than "OMFG that is a must-have."