Portal: Prelude RTX

mrk

mrk

mrk

Man of Honour
Joined
18 Oct 2002
Posts
102,794
Location
South Coast
This is supposed to be out today, Steam says coming soon still, so I guess later this evening. Looks cool! Supports RTXIO as well but not sure which variant (equiv to DS 1.1/1.2? etc).


store.steampowered.com

Portal: Prelude RTX on Steam

Portal: Prelude RTX is a stunning fully ray-traced remaster of the iconic prequel mod for Portal, featuring NVIDIA DLSS 3 and RTX IO. Survive a facility run by Aperture Science's heartless employees in 19 challenging new chambers and learn how everything came crashing down.
store.steampowered.com store.steampowered.com

www.nvidia.com

Portal: Prelude RTX Available Today - A Free RTX Remix Mod Featuring Full Ray Tracing, NVIDIA DLSS 3 & NVIDIA RTX IO

Play the highest-rated Portal mod, remastered with full ray tracing, DLSS 3 and RTX IO, for free. Learn more about the enhancements, the first use of RTX IO, and watch the RTXON gameplay trailer in this launch article.
www.nvidia.com
 
Driver is incompatible for me. I dont want to update from 536.98 to the latest. I just reverted to 535.98 from 536.40 due to (what seems like) huge latency issues with 536.
I'll see how I get on with Warzone 2 now im back on 535.98. If it starts running like crap again ill update to 536.98
 
It's got new levels and stuff inc NPCs that were not in the original Prelude.

Found out that RTSS overlay crashes it, so disabled RTSS in the game, which does mean no stats! But it looks good and runs good using DLSS Quality (manually set in RTX Remix):

hY9ym7S.jpg


Even though it's running at 100+fps though, it the mouse camera movement doesn't feel as smooth as Cyberpunk. I guess this is because the engine is running through a layer and it's OG Source under all the tech. Feels like how The Last of Us felt before they patched the mouse camera movement judder, remember that?
 
Last edited:
Yes the mouse camera feels horrible and even though I have turned off Motion Blur it still looks blurry when moving camera. Frame Generation didn't seem to do much except add some minor latency... :p
 
Given it's a mod, and the ifrst of its kind using RTX Remix in this way, I guess it's to be expected. Still, it's workable for sure though, just not the AAA experience one might expect. Although saying that, even AAA devs don't get it right until after months of patching has elapsed these days so.... What can ya do.

Edit*

I've figured out the mouse smoothness issue. Found that disabling Frame Gen (ALT+X then developer menu) results in smooth mouse camera movement. Obviously the fps drops to the 60s, but the mouse is smooth. Enabling FG again results in the slightly juddery mouse camera movement again.

I also noticed a single tearing line in the exact same place when FG is enabled. It's far below my monitor's refresh rate so isn't to do with that so has to be an artefact of FG in this mod.

Examples:

imgur.com

imgur.com

Discover the magic of the internet at Imgur, a community powered entertainment destination. Lift your spirits with funny jokes, trending memes, entertaining gifs, inspiring stories, viral videos, and so much more from users like robbiekhan.
imgur.com imgur.com

very strange, but I suspect this is all due to a combination of RTX Remis being used along with the base game being so old (DX9) and using the Vulkan wrapper etc.
 
Last edited:
Got RTSS working, had to set the game's hl2.exe to launch as administrator - That sorted it.

Looking at VRAM/RAM usage, it's barely pittance, I guess this is due to RTXIO working in realtime so at any given moment it's passing assets straight to the GPU for real time rendering rather than caching to VRAM/RAM. Quite interesting.

LPDenlU.jpg
 
You must log in or register to reply here.
Back
Top Bottom