AMD FSR antialiasing discussion

I don't think we have heard anything from the developers as far as implementation, but should be interesting. Are developers using UnReal or Unity going to focus and spend precious development time on upscaling techniques that may fall short of internal upscaling techniques provided by the engine; TSR will be available on PC's and consoles.

 

looking at Alex's more capable analysis that the rest of these amateurish websites there is a clear and significant downgrade in details. Its not little and hard to notice. Its a visibly softer image with compromised details in multiple areas. Alex also points how the aliasing of the base resolution remains in the upscaled image. So pixel crawl, shimmering and all that stuff remains. Image stability was one of the highlights of dlss in a game like Death Stranding for example

 

Good question. You can do this with a combination of DLSS and DSR today. On a 1080p monitor upscale to 4K using DLSS and downscale back to 1080p using DSR.

 

Including it in games as it is now or waiting till it has matured enough to include as an option? The big tell will be which studios over the next few weeks announce what games will be using FSR as an option.

 

FSR is not an AA method. So, no, it doesnt improve image quality over the native resolution.

 

If you apply a negative/sub-1 scaling factor (i.e. increase rendering resolution) and the game is tuned to adjust the mipmap bias accordingly... maybe it does.

 

Haven't had time to read articles yet.

Has anyone tested the actual cost of FSR?
Something like 1080p vs 4k ultra performance FSR?

 

From what I get, you can disable the taa from the game (if the game allows it) and still have FSR after in the pipeline. I guess that can help with the blurriness ?

 

Digital Foundry's video here:



Watching that first, then coming into this thread was somewhat surprising when seeing some of comments from people that were generally impressed. If anything I've been generally upbeat on this before release, I've argued that I don't think this needs to 'match' DLSS to be worthwhile at all as some have, simply by nature of it being open source and supported across a wide variety of hardware is a feature unto itself - I definitely don't want it to replace DLSS as the gold-standard, but having another 'decent' reconstruction tech that's easily integrated as another option for non-RTX cards is a good thing, especially as on the PC we see a far sparser use of checkerboarding/TAA upsampling across games.

However, the results as Alex showed are less than impressive, and bear in mind Alex doesn't even make a direct comparison to DLSS in the video (DLSS isn't even mentioned until the very end). Rather just comparing it against regular bilinear and TAA upscaling, it falls down hard against the latter imo.



UE4 TAA looks significantly superior here. I can't speak to how good it is compared to say, Insomniac's very impressive reconstruction tech or basic checkerboarding, but I don't expect it would far well against those either. So that this is at 'least' a worthwhile method for the new consoles to squeeze out extra performance is dubious when it likely can't compete with already established reconstruction methods they've been using for years.

So what is this for? Based on what I've seen so far, if I see this - and only this - in a game as the only reconstruction method option, that will basically be its purpose - 'better than nothing' - and perhaps compared to bilinear upscaling + sharpening, even that meagre improvement might be largely negated. Of course goes without saying if this can't compete with regular TAA upscaling it's not remotely in the same league as DLSS.

Maybe it will improve, but as others have postulated I don't see that happening until it becomes more than a spatial upscaling method. From what I've seen it's less FSR and more BBB (Barely Better Bilinear).

 

FSR needs some form of AA. So i think it wont be possible to disable TAA and use FSR. You could increase the sharpness of the picture like what they did in Terminator:

 

And has massive shimmering, destroying the image quality. It's not a replacement for any AA method, if anything it increases pixel shimmering over no AA at all.

 

I'm one of the guy that, in a lot of games, prefer no taa at all vs taa. I prefer shimmering and very crisp details, that no shimmering but bluriness. But as time pass, not a lot of game are allowing that without artefacts in some effects...

 

I guess after this less than impressive showing the question is: was this already being researched or in the pipeline for AMD or was it a knee jerk reaction quickly put together just to have something, anything, to appease fans asking for a DLSS competitor? Sounds like a terrible waste of time..

 

FSR will have the same temporal artefacts - FSR will use TAA in a game that uses TAA. It should not be seen as an alternative to TAA U or any image reconstruction technique as I view it - rather as a superior way to upscale an image in the case where that is the only option. But ideally, that should never be the only option. No one should really just want a game to FSR - that would be a bad outcome for a game's potential image and performance quality on PC.

 

The patent was from 2019. Perhaps future versions of the technology will have a temporal component, or perhaps it can be integrated with TAAU.

 

Sounds like extra third of framerate to me. On any card one can reasonably dare to play current games. So the point is to diminish the DLSS advantage of Nvidia.

 

The singular comparison image is from the Performance mode, as the TAA upscaling from UE4 is from the same starting resolution - 1080p, with very similar performance uplifts. My thoughts on it are based from the entire video, most of which focused on the 'Ultra Quality' mode, where the image degradation was still very noticeable.

Yes, FSR Balanced/Ultra will produce better output than that image - but TAA upscaling that starts with a native 1440p (as most implementations do on this gen of consoles), or checkerboarding at 1920x2160 will also produce improvements over TAA upscaling from 1080p.

 

I can't seem how it's diminishing anything when it's inferior to TAA...