OpenXR Guide - Deprecated - This time for real (▀̿Ĺ̯▀̿ ̿)

[abelian]

Just now, Tony86 said:

i had the same issue.

managed to solve by restarting wmr portal and killed some process named acc.... etc....

but after that after à 3rd or 4th dcs boot. issue went back and first method was unsuccesful. i had to rebbot my computer. i guess à computer reboot is the best method.

See my post above. Try restarting the "Windows Perception Service" as an easier workaround.

[Tony86]

51 minutes ago, abelian said:

See my post above. Try restarting the "Windows Perception Service" as an easier workaround.

ok will try that.

thanks 

[M1Combat]

Whatever you did with .6 seems to have solved the Apache B/S issue :).  I'll edit my OP where I explained it.

[coldViPer]

New OpenCompositeACC version 0.6.1 released:

https://gitlab.com/Jabbah/open-composite-acc/-/releases

"Now GetProjectionRaw works using viewSpace at start up we can use it to fix the hidden area mesh without the manual steps. Fixed ACC menu appearing low down at start up."

[Sr.]

Managed to incorporate a poor man's motion smoothing using Radeon chill. it's not perfect, but it beats the hell out of the artifacting from openxr tools.

[edmuss]

Some further information on the workings of OXR

With the OXR Dev toolkit you can set a customised render scale, if this is left to default it will calculate the recommended resolution based on the size of your VRAM.

With an 8GB 3070 the recommended resolution for the G2 is 2480x2428 per eye which is a little over 60% render scale.

It makes this recommendation based on the back buffer size (with worst case scenario of having 4xMSAA applied) not using more than 10% of available VRAM.

At 100% render scale I'm getting 55-60fps on A10C easy instant action, at default renderscale I'm getting 70-75fps.

Even with 60% render scale the image quality is actually very good, aliasing isn't bad at all considering and I can turn on 2xMSAA for a 2-3fps hit and really clean up the image.  HUD and MFD text characters are slightly less well defined but even at the reduced resolution all cockpit text is fully legible without needing to lean in.

[edmuss]

Updated again and repackaged for OVGME, this should get rid of the need to set a manual mask

 

OCXR_WMR_ACC_v0.6.1.zip

[winghunter]

1 hour ago, abelian said:

See my post above. Try restarting the "Windows Perception Service" as an easier workaround.

have you tried with 0.6.x ? That fixed it for me

[Spatz]

Does it make sense to try this with the quest2?

[abelian]

1 hour ago, winghunter said:

have you tried with 0.6.x ? That fixed it for me

Yep, I have the issue with 0.6.0. Will try with 0.6.1 later.

[Tony86]

1 hour ago, winghunter said:

have you tried with 0.6.x ? That fixed it for me

it worked. thanks for the trick. i hope it gonna work every time.

[Elidji]

6 hours ago, Dodge said:

Yes, it does seems so. I have the Steam DCS variant installed on my system and have managed to run DCS via WMR and without it calling SteamVR. So it does seem to work. I just had to get used to starting DCS from within WMR (never done so before).

How do you launch a game from within WMR without controllers ?

[A.F.]

Everything seems to work, but my voice attack no longer works.
The microphone of the G2 is apparently not recognised.

Does anyone have an explanation for this?

 

Edit: I have it !

Edited March 23, 2022 by A.F.

[Sr.]

33 minutes ago, Elidji said:

How do you launch a game from within WMR without controllers ?

Alt+Tab

Desktop shortcut.

12 minutes ago, A.F. said:

Everything seems to work, but my voice attack no longer works.
The microphone of the G2 is apparently not recognised.

Does anyone have an explanation for this?

oh great... 

[Willdass]

Maybe a stupid question, but does this only work for standalone DCS? I use the steam version, and repair the game through steam(is this enough?), and SteamVR always opens... So I cant access the toolkit menu.

Any suggestions? Thanks!

[July]

So I thought I'd give this a go since people were praising the reduced frametimes and overall better image quality. After cleaning/repairing DCS and removing my previous VR mods I placed the files in my bin folder, as well as installing OpenXR Tools for Windows Mixed Reality. I tried it, and did not notice a difference compared to my previous setup with VRPerfKit running AMD CAS at 1.0 resolution (Everything actually became blurrier at the same % custom resolution compared to my % SteamVR SS because of no sharpening/upscaling with VRPerfKit which the OP confirmed does not work with OpenXR https://www.reddit.com/r/hoggit/comments/tknziz/update_233_v06_openxr_for_wmr_headsets_others_g2/). So far, I'm seeing very close performance in frametimings at 60%, 80%, and 100% resolutions for both SteamVR and OpenXR. I have a G2, and playing DCS without motion smoothing (since it's difficult to hit 90 FPS) looks terrible so I typically play with motion smoothing on/forced on. OpenXR's Reprojection does allow 30/45/60Hz refresh rate compared to SteamVR's minimum of 45Hz with the headset set to 90Hz, while OpenXR also allows seamless switching between the lockout refresh rates. However, OpenXR Reprojection seems to cause noticable tearing effects at the edge of the displays as it hits 30/45Hz. I much prefer SteamVR's motion smoothing over OpenXR due to the tearing because I am able to maintain good enough frametimes for 90Hz motion smoothing 95% of the time. I have also had consistent issues with DCS crashing on startup, similar to what some others have been experiencing in this thread with the same errors. DCS will only open on average 1/3 tries without crashing which is incredibly annoying.

In my personal opinion, it's not worth using OpenXR with a G2 at the moment because of the crashing and until the smoothing is improved unless if you play without motion smoothing.

I am running a 3080, 12600k @ 4.9GHz all core. 32GB RAM @ 3000MHz, DCS on an NVME.

Edit: I should clarify, comparison with is done with SteamVR + WMR set as OpenXR runtime in SteamVR. OpenXR comparison was done as OP stated, with no SteamVR passthrough.

Edited March 23, 2022 by July

[edmuss]

Sounds as though you have something not quite right, 100% OXR is as clear as 150% steamvr on my machine and unless you're really struggling to get 45fps the motion smoothing isn't required. Running 60% gives me about 25fps uplift with sparingly small losses in clarity.

I get really bad artifacting with the OXR reprojection as well but as I'm well above 45fps, even at 100% it's not needed.

I also prefer to not use upscaling with OXR as it introduces a load of crawling shimmery ants which are more noticeable because the base image is so stable and clean. You can use both FSR and NIS with sharpening within the OXR toolkit.

[July]

18 minutes ago, edmuss said:

Sounds as though you have something not quite right, 100% OXR is as clear as 150% steamvr on my machine and unless you're really struggling to get 45fps the motion smoothing isn't required. Running 60% gives me about 25fps uplift with sparingly small losses in clarity.

I get really bad artifacting with the OXR reprojection as well but as I'm well above 45fps, even at 100% it's not needed.

I also prefer to not use upscaling with OXR as it introduces a load of crawling shimmery ants which are more noticeable because the base image is so stable and clean. You can use both FSR and NIS with sharpening within the OXR toolkit.

With OXR Reprojection disabled and custom resolution at 100%, I am maintaining 60-80 FPS in most scenarios, but I still consider it worse than SteamVR's OXR or WMR set as OXR in SteamVR with motion smoothing due to significant tearing and jitter. When I run OXR at 100% custom resolution, yes the displays are clear but the tearing doesn't justify me using just OXR instead (not that significantly clearer than my previous setup with VRPerfKit anyway)

Edited March 23, 2022 by July

[edmuss]

Yeah you shouldn't be getting any jitter or tearing of any kind, presume that your CPU times are good and not spiking?

Edited March 23, 2022 by edmuss

[July]

Just now, edmuss said:

Yeah you shouldn't be getting any jitter or tearing of any kind, presume that your CPU times are good and not spiking?

 

Yes, I have been benchmarking my results in Caucasus F-16 Free Flight and Syria F-16 Free Flight. CPU frametimes are sitting 7-9 on average.

[peachmonkey]

@nikoel and others here:

do you happen to know how to adjust the World Scale in this OpenCompositeACC mod?  Looking at their release information for version v0.3.1 it says "Support for setting IPD offset (World Scale)" yet there are no instructions on how to achieve it...

[edmuss]

World scale is adjustable via the in-game OXR toolkit menu.

8 minutes ago, July said:

Yes, I have been benchmarking my results in Caucasus F-16 Free Flight and Syria F-16 Free Flight. CPU frametimes are sitting 7-9 on average.

Might be worth dropping into the discord and asking the devs because what you're describing isn't normal.

Could it have been spiking in steamvr but you weren't aware because of reprojection?

[July]

11 minutes ago, edmuss said:

World scale is adjustable via the in-game OXR toolkit menu.

Might be worth dropping into the discord and asking the devs because what you're describing isn't normal.

Could it have been spiking in steamvr but you weren't aware because of reprojection?

No, I have been watching the DCS in-game FPS counter and frametime overlay with the OpenXR Tools app without SteamVR, and advanced frame timings dev option in SteamVR. Neither show significant spiking during SP flight.

Either way, I'm not going to play without reprojection/smoothing off in DCS because it struggles to reach 90 FPS with the engine limitations, and OpenXR's implementation of reprojection in my opinion is much worse than SteamVR's.

Edited March 23, 2022 by July

[July]

Maybe I shouldn't exactly call it jittering. It's the effect you get that looks like ghosting when maneuvering and looking at another object and your FPS dips or reprojection turns off for a split second. So yes, tearing, but not stuttering caused by some kind of lag. It's based on what I see, not what the game engine is putting out in FPS.

Edited March 23, 2022 by July

[edmuss]

You don't need reprojection in OXR though, honestly.

You're rendering at 45fps and OXR is just repeating any spare frames up until it hits the 45hz, then it gets the tracking data and sends the frame to the headset.

Have you got any odd vsync applied in nvcpl for DCS?

Did you clean and repair DCS?

Edited March 23, 2022 by edmuss