Do AMD FidelityFX options work in VR?

Youda · Mar 13, 2023

Since Odyssey merge we have these new options for upscaling with AMD cards - CAS and FSR.
Does it work in VR headsets and how to properly set it up so that i does what i want (render at lower resolution and then scale up to the resolution of the headset and improve the image quality)?
Has anyone tried?

Crank Larson · Mar 13, 2023

It works, but YMMV. Made things very flickery for me. I am instead using upscaling via OpenXR.

Jack Winter · Mar 13, 2023

Just to note that they aren't specific to AMD GPUs, they work on all GPUs. No idea if, nor how well they work with VR.

pFVD · Mar 13, 2023

FSR works, but in my personal opinion it's not worth it. Even at maximum "quality" the jagged edges due to poor anti-aliasing makes it a hot mess to look at. And the performance difference isn't apparent enough to accept the degraded image quality either. This is with a 5600x, 3060ti and a Quest 2; YMMV.

I've not got OpenXR toolkit to work (yet) in my setup but that might be a better route for more performance. Hopefully some others will reply with more info on that.

Youda · Mar 13, 2023

Hm, so i tried it and i'm plesantly surprised. With supersampling set to ultra it reduced my frametime inside a station from 15ms to 10ms, so i could get to 90 Hz, with just a little bit of added shimmering. Imho better result than running 45 FPS with motion reprojection.

If i have to choose between

low details, no rescaling, motion reprojection off, 90 real FPS
high details, no rescaling, motion reprojection off, 45 real FPS
high details, no rescaling, motion reprojection on, 90 fake FPS with heavy shimmering and artifacts
high details, FSR on, motion reprojection off, 90 real FPS with slight shimmering and loss of clarity

i choose the 4., it has least downsides imho.

But i'll try to graph some performance with OpenXR, already done that with DCS, though it was not any miracle either.

jojon · Mar 14, 2023

On a related note: Has anybody who has a headset with eyetracking tried, and had any luck with OpenXR Toolkits's dynamic foveated rendering insertion feature, in Elite Dangerous?

buzzx · Mar 15, 2023

Its recommended to use FSR within Elite over using it in OpenXR toolkit as the scaling is done at the ideal point in the rendering pipieline. Even the makers of OpenXR toolkit recommend this. FSR definitely works and while it can be a bit messy at times it definitely gives you more detail. You really want to be able to run at minimum quality or ultra preset though. I agree though motion reprojection is horrible.

Youda · Mar 15, 2023

buzzx said:
Its recommended to use FSR within Elite over using it in OpenXR toolkit as the scaling is done at the ideal point in the rendering pipieline. Even the makers of OpenXR toolkit recommend this. FSR definitely works and while it can be a bit messy at times it definitely gives you more detail. You really want to be able to run at minimum quality or ultra preset though.

Thanks, that's what i needed to know.

Youda · Mar 15, 2023

@buzzx ~~Ok, maybe one more question. Do you know what happens when i enable the FSR in the driver via the AMD Adrenalin control panel? Is it better or worse than in game and in OpenXT Toolkit?~~
Never mind, should have googled first.

OpenXR Toolkit (upscaling, world scale, hand tracking...) - Release thread

The are both done on the GPU. They are exactly the same. FSR is done by the game, RSR is done by the driver. I have a very detailed explanation of the differences here (for NIS, but exact same thing applies to FSR): Nvidia Image Scaling NIS and VR - Virtual Reality (VR) / General - Microsoft...

forums.flightsimulator.com

Crank Larson · Mar 15, 2023

buzzx said:
Its recommended to use FSR within Elite over using it in OpenXR toolkit as the scaling is done at the ideal point in the rendering pipieline. Even the makers of OpenXR toolkit recommend this. FSR definitely works and while it can be a bit messy at times it definitely gives you more detail. You really want to be able to run at minimum quality or ultra preset though. I agree though motion reprojection is horrible.

Yes, but I use NVidia upscaling using OpenXR which isn't an option in E: D. In my set-up, this looks better than the in-game upscaling.