Unreal Engine 5, [UE5 Developer Availability 2022-04-05]

UE5 demo looks miles better, really shows the staggering difference between the two engines.

From the artstation
https://www.artstation.com/artwork/rRx8aG

Render with Unreal Engine 4.25 all raytrace
Final environment Inspired by ue5 demo‬ this is only for portfolio so it is not a remake or what ever it will never be the same as ue5 as i am not using billions of billions of polygons but LOD 0 megascans assets with 8k textures used rtx2070maxq 32gbram i9 8core thanks.

It runs better now than he has a 3090. This is using some of the UE 5 demo assets but with classic method with low poly models and normal maps generated from the LOD0 UE 5 assets. And he replaced Lumen with raytracing.

He is senior environment/lighting artist at The Initiative.


pasquale-scionti-asset.jpg


 
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FWIW IMO the lighting from UE5 is clearly superior: there is graduation to the shadows which is simply missing from the UE4 render.
 
FWIW IMO the lighting from UE5 is clearly superior: there is graduation to the shadows which is simply missing from the UE4 render.

Because people needs to understand only geometry cast shadows. He used the same assets but he use low polygons and normal maps. You don't need to be as extreme as Unreal Engine 5 but a game like Demon's souls Remake have tons of polygons because if you want object to cast shadows you needs polygons.

Offline Path tracing would not resolve the UE 4 scene, much more polygons need to be there.
 
https://www.gamesradar.com/were-abl...ssible-tomorrow-inside-epics-unreal-engine-5/

They just published the EDGE august 2020 Interview about Unreal Engine 5


From the interview:

PS5 was going to make Nanite possible. "It was three or four years ago at least when we started to talk with Mark Cerny about possibilities for the next generation," Sweeney says. Their discussion wasn't just about graphics, but about the growing realisation that storage architecture in game hardware – having to load data from a hard drive, the huge amounts of latency between mass storage and a processor – was a limiting factor in Epic's and all developers' future plans for game-making. The team at Epic received very early hardware access to the next-gen console, and the Sony collaboration has been far longer-running than the Microsoft one, Sweeney says, something which naturally influenced Epic's decision to reveal Unreal Engine 5 using PS5 instead of Xbox Series X.

This is thanks to PS5's IO (or input-output) system, which according to Epic's VP of engineering Nick Penwarden, is "the major innovation with the next-generation console hardware. They have faster CPUs, they have faster GPUs, and that was really important to be able to achieve the visuals that we showed – but the biggest change across console generations is absolutely going to be the IO bandwidth that we're able to achieve with the SSDs that are in next-generation consoles."

"It's a key unblocker for what Brian and team have built here," Sweeney confirms. "Rendering micropolygons resulting from a 20 billion-polygon scene is hard enough. But actually being able to get that data into memory is a critical challenge. And as a result of the years of discussions and efforts leading up to that, it was a perfect opportunity to partner [with Sony] to show that effort finally coming to fruition with pixels on the screen."


Hopefully this will put down those ludicrous claims of the UE5 demo running in a windows laptop with a mobile geforce RTX because someone played a video of the demo during some livestream in China.
 
It is maybe coming from the UE 4 global illumination implementation. And there is too much less details, with less shadows.
The difference in lighting is very big, also if we try to ignore geometry. Some screenshots look like direct lighting with constant ambient. No idea what he's using and how hard he worked on tuning, but i assume RTX GI could look better.
Interestingly, the difference geometry makes is less about details, but mostly about feeling more seamless with consistent resolutions than the other, where you can see which model is which. But this also implies a purpose of doing some programmer art to test something out. It's just not polished, other than having some nice assets.
 
The difference in lighting is very big, also if we try to ignore geometry. Some screenshots look like direct lighting with constant ambient. No idea what he's using and how hard he worked on tuning, but i assume RTX GI could look better.
Interestingly, the difference geometry makes is less about details, but mostly about feeling more seamless with consistent resolutions than the other, where you can see which model is which. But this also implies a purpose of doing some programmer art to test something out. It's just not polished, other than having some nice assets.

With more time on this, he could do better, He did it in 11 days in his time off job and another problem the original assets were made for the UE5 demo. But from my point of view, the UE4 demo reminds me of an old gen games(PS4/XB1) and it would be the same with infinite bounce just better shadows.
 
Hopefully this will put down those ludicrous claims of the UE5 demo running in a windows laptop with a mobile geforce RTX because someone played a video of the demo during some livestream in China.

Why? That's a completely unwarranted conclusion. Throughout the piece we never hear any mention that the PS5 specific IO implementation is what has enabled that demo. All he mentions, even in the parts that you've bolded above is that you need an SSD, as opposed to an HDD to enable the instant seek times and of course higher bandwidth demanded by Nanite for geometry streaming.

Even your description of the claim above is completely wrong. No one claimed the demo was running on the laptop in that live stream. Only that during the stream, the engineer specifically stated that the demo also ran on a mobile RTX2080 GPU in his laptop that was also running a middle of the road NVMe SSD:


The same engineer also specifically states that the SSD requirements aren't that high, and any decent SSD should be able to handle the demo. Furthermore, the actual CTO of EPIC Games confirmed the demo would run on a well speced PC and while that's only paraphrasing his comments from a conference call, I'm pretty sure DF who were also on the call confirmed the comments here on this forum.

https://www.windowscentral.com/geforce-rtx-2070-super-and-ssd-can-run-unreal-engine-5-demo-pc
 
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