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


nikoel

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8 hours ago, ZoneySD said:

I have a feeling this is a stupid question but does OpenXR // Open Composite work in DCS wit Pimax 8kx? 

 

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"Any sufficiently advanced technology is indistinguishable from magic."

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Question: once upon a time, there was a video that mentioned removing the WMR home and replacing it with a smaller 12mb 3 sided wall that reduces the VRAM by almost another gig. Where can I find that info? Didnt see it in the original post.

edit: nvm. https://www.skyspaces.app/

Install empty room and run WMR. Should load a new empty house that frees up a bit more ram.


Edited by Hammer1-1

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As new user of HP Reverb G2 that came today after first "flight" I starded the "fight" with CPU spikes again. First what Ive do was instaling the Firmware. But in the end of the day I found that those "sp113237.exe" its just an unpacking things OF FIRMWARE that you must install from directory that it was unpacked and follow the pdf guide. For 30mins of flying in DCS works good. 

nullimage.png

https://support.hp.com/us-en/drivers/selfservice/hp-reverb-g2-virtual-reality-headset/33835976

 

image.png

 

 

EDIT: Looking thru flashlight or whatever its called to look around in VR, I found that my OLED 55" screen generates very much light so I just turn OLED to 0%. Maybe placebo, but worth try.

 

Edit2: My performance shearching lead me to times CPU ~13ms, time GPU ~15-17ms after i put those 2 folders+1file as "READ ONLY":

image.png


Edited by TylerPL666
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Running the OpenComposite.exe now and then and it downloads updates (which is nice), but do any1 know if there is a change log? I checked my install folder, the website etc but could not find any.

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14 minutes ago, nikoel said:

 

 

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Well, I'm certainly confused 🤣

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G2 is a WMR headset and needs a work-around to run SVR games.  We now have a choice of two work-arounds: WMR4SVR, or OXR.  We jump through those hoops to get a high resolution headset (equal to Pimax 8K) for cheap, basically.  

Pimax is a SVR headset and according to the internet, doesn't support OXR.  Good news is, it doesn't need a workaround. 

I'm constantly amazed at how well Pimax works with GPU's that would be considered woefully underpowered in the G2 world.  Unsurprising to me that the 3090ti does well here. 

Not clear to me what the OXR Toolkit is doing for this guy.  If anything.  Doesn't appear to be clear to the developer either.  

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Do any of you guys get sometime FPS drops, like huge ones that require to restart DCS or do some Alt+Tab magic?

I get stable 45FPS mostly, but every now and then, playing on MP servers, it would drop to 15FPS. I could do Alt+Tab to switch out of DCS and then Alt-Tab to go back and the FPS would go back to 45, but not always - if these wouldn't then I need to restart DCS. 
The question is, is Motion Reprojection failing sometime and goes this way or somehow priorities and resources in the system are switched somewhere else and DCS gets less. 
I have a clean Windows and clean DCS and nothing more installed on my SSD.

Cheers.  


Edited by MartinVoy

System spec: Windows 10 Pro / i7-12700K / 3080Ti / 64GB / m2 SSD / Orion F16 Throttle / TM Warthog Stick / TPR Rudders / JetSeat / Reverb G2.

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I express my great gratitude to the developer, as well as to everyone who participated and continues to participate
in the development of this divine fashion.
I have carefully read almost all the pages of this topic and this is how I managed (from the second time)
to install correctly, as it seems to me, this magic mod.

Especially for its installation, I installed a new windows, then I optimized it.
I installed only the stock minimum necessary programs and drivers. (no msi afterburner, fpsvr, etc.)
Then I did everything according to the instructions from the first page.
In parallel with installing DCS, I also installed and configured dirt 2.0, out of curiosity.
(as it turned out, it doesn't work with the openxr toolkit in this game, but it works without the toolkit for me)
Now I see that my computer is running at full capacity (almost)

Sorry for the Google translator, I wrote it for statistics.Tell me if you need something to help.
Thank you very much. My old hmd odyssey certainly has a second life.
I've never seen such a picture in vr before! That's cool!

the scale of 65% in openxr is better than 150 in steam vr. For odyssey.

My spec: i5-11400f, 64 gb3200RAM, 6900XT

 

The only thing that bothers me is the landscape fading every 1-2 seconds,
even with a good frame time of 10-12. Regardless of the terrain.(((( I don't know what to do next.
Everything seems to be set up as it should, but these lags kill everything.


Edited by Serg66RUS

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10 часов назад, MartinVoy сказал:

Do any of you guys get sometime FPS drops, like huge ones that require to restart DCS or do some Alt+Tab magic?

I get stable 45FPS mostly, but every now and then, playing on MP servers, it would drop to 15FPS. I could do Alt+Tab to switch out of DCS and then Alt-Tab to go back and the FPS would go back to 45, but not always - if these wouldn't then I need to restart DCS. 
The question is, is Motion Reprojection failing sometime and goes this way or somehow priorities and resources in the system are switched somewhere else and DCS gets less. 
I have a clean Windows and clean DCS and nothing more installed on my SSD.

Cheers.  

 

This is a known issue related to insufficient VRAM. Basically any game would behave like that when there is not enough VRAM. Had it a lot with 3070, not so much with 3080ti. Try to reduce terrain textures, especially on MP servers. E.g. I'm reducing terrain to low and other textures to medium to make it somewhat flyable on GS server. Still far from that though, in my case it jumps from 72 to 60 fps, looks like the server wants to give you only 60 fps or this is because I have 32GB of RAM and really need more for that server. Personally, can't stand motion reprojection and want 72 fps to enjoy the sim. One would likely need a 3090 or 6900xt to run textures on high with a reasonable framerate there.

Also, you should probably look for ways to reduce VRAM consumption by the WMR itself, if not yet done.


Edited by Fiztex
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8 hours ago, Serg66RUS said:

 

the scale of 65% in openxr is better than 150 in steam vr. For odyssey.

My spec: i5-11400f, 64 gb3200RAM, 6900XT

 

The only thing that bothers me is the landscape fading every 1-2 seconds,
even with a good frame time of 10-12. Regardless of the terrain.(((( I don't know what to do next.
Everything seems to be set up as it should, but these lags kill everything.

 

  1. Open adrenaline, performance, custom settings.  Set your minimum clock speed to within 100-200 of max clock speed.
  2. Increase your DCS graphics settings until your GPU frame time is about 20.

Note, I'd be careful about pushing clouds, water, or shadows -- that'll put a strain on your CPU.  I'd start with medium water, standard clouds and try this with shadows off.  

Don't worry too much about textures, you have plenty of VRAM.   I'm currently running low terrain textures, high cockpit textures, and AF x16

Turn off MSAA and try to get resolution up to 150% or so.  It doesn't have to be exactly 150%, it could be 145 or 182, whatever it takes to get your GPU time to 20ms.  

Point being, when you dip below 90fps you're dropping frames.  Only three ways to solve that, really --

  1. Keep it above 90fps, which is hard to do in this game
  2. Lock frame rates to 45, either using Chill or Motion Reprojection
  3. Get FPS below 60.  You'll have microstutter due to early frames, so it won't be perfectly smooth, but that's better than dropping frames.  

Some prefer option 3, me included.  Others prefer option 2.  Your Odyssey should look pretty awesome with a resolution of 150%, I'd try that first

Let us know what your CPU times look like.  Are you overclocking? 

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Possibly unrelated, though I saw similar comment on the MSFS forum.

Lately whenever I start WMR, I hear the start up sound through the speakers, put on headset and one of 4 things happen... I get a grey screen or I see the vast expanse room with slight flicker, brighter more rapid flicker or starts normally.

Restart WMR, either same or faster flicker. Restart WMR a 3rd or 4th time and finally no flicker.

The poster on the MSFS forum mentioned it was only in one lens, but he thought he tracked it down to being related to OXR, disabled it and went away.(well, I'm not ditching OXR). Has anyone else experienced this?


Edited by Sr.

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no i get an occasional openxr waitswapchainimage timeout crash .. but thats it

 


Edited by speed-of-heat

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vor 2 Stunden schrieb DeltaMike:
  1. Open adrenaline, performance, custom settings.  Set your minimum clock speed to within 100-200 of max clock speed.
  2. Increase your DCS graphics settings until your GPU frame time is about 20.

Note, I'd be careful about pushing clouds, water, or shadows -- that'll put a strain on your CPU.  I'd start with medium water, standard clouds and try this with shadows off.  

Don't worry too much about textures, you have plenty of VRAM.   I'm currently running low terrain textures, high cockpit textures, and AF x16

Turn off MSAA and try to get resolution up to 150% or so.  It doesn't have to be exactly 150%, it could be 145 or 182, whatever it takes to get your GPU time to 20ms.  

Point being, when you dip below 90fps you're dropping frames.  Only three ways to solve that, really --

  1. Keep it above 90fps, which is hard to do in this game
  2. Lock frame rates to 45, either using Chill or Motion Reprojection
  3. Get FPS below 60.  You'll have microstutter due to early frames, so it won't be perfectly smooth, but that's better than dropping frames.  

Some prefer option 3, me included.  Others prefer option 2.  Your Odyssey should look pretty awesome with a resolution of 150%, I'd try that first

Let us know what your CPU times look like.  Are you overclocking? 

@DeltaMike  You should really stop selling nonsense as advices to people, who are really looking for some support.

 

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On 5/16/2022 at 9:19 AM, DeltaMike said:

G2 is a WMR headset and needs a work-around to run SVR games.  We now have a choice of two work-arounds: WMR4SVR, or OXR.  We jump through those hoops to get a high resolution headset (equal to Pimax 8K) for cheap, basically.  

Pimax is a SVR headset and according to the internet, doesn't support OXR.  Good news is, it doesn't need a workaround. 

I'm constantly amazed at how well Pimax works with GPU's that would be considered woefully underpowered in the G2 world.  Unsurprising to me that the 3090ti does well here. 

Not clear to me what the OXR Toolkit is doing for this guy.  If anything.  Doesn't appear to be clear to the developer either.  

Here is a cut an paste from a moderator on another forum which maybe this guy knows what he's talking about ("Kojack" on OculusVR forum from Oct '21). Since DCS supports OpenXR, and SteamVR supports OpenXR, and Pimax supports SteamVR, the transitive property says that Pimax supports OpenXR ?? Except really I believe what is happening is that the *OpenXR toolkit* is interfacing with SteamVR, which is compatible with OpenXR plugins. SteamVR is then wrapping the Pimax Unity SDK. So really you are not using the OpenXR runtime, you are just using the OpenXR interface of SteamVR. I don't see a huge advantage of doing this versus, say using the VRPerf toolkit.

There are three main VR apis for PC headsets: OpenVR (SteamVR is an implementation of it), Oculus (often called OVR) and WMR (for headsets like the HP Reverb G2).

SteamVR includes plugins that redirect OpenVR games to Oculus or WMR (SteamVR itself has no built in support for direct access to Oculus or WMR devices, it uses the native SDKs).

 

OpenXR acts as a common interface that bypasses the native SDKs. Oculus, Valve and Microsoft provide OpenXR runtimes. There can only be one runtime registered in the system at a time, that's what an OpenXR game will use. If you have the Oculus OpenXR runtime registered, all OpenXR games will be handled by the Oculus drivers, (same for the other two).

If you have two kinds of headset installed, such as a Quest 2 (with Link) and a Reverb G2, registering the Oculus runtime means all OpenXR games go to the Quest 2. Registering the WMR runtime means all OpenXR games go to the Reverb.

 

In the case of SteamVR, it's slightly different. Registering SteamVR/OpenVR's OpenXR means all OpenXR games go to SteamVR, which then either handles it directly (for headsets like Index or Vive) or redirects to the Oculus SDK or WMR SDK.

 

Of course none of this actually happens if the game isn't built for OpenXR. The only one I definitely know of is Microsoft Flight Simulator. So 99.999% of current VR games will be unaffected by which OpenXR runtime you have.

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2 hours ago, speed-of-heat said:

no i get an occasional openxr waitswapchainimage timeout crash .. but thats it

 

 

Me neither. I had the waitswapchainimage twice. I reduced the overclock on my GPU and haven’t had a problem since.

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11 hours ago, Fiztex said:

This is a known issue related to insufficient VRAM. Basically any game would behave like that when there is not enough VRAM. Had it a lot with 3070, not so much with 3080ti. Try to reduce terrain textures, especially on MP servers. E.g. I'm reducing terrain to low and other textures to medium to make it somewhat flyable on GS server. Still far from that though, in my case it jumps from 72 to 60 fps, looks like the server wants to give you only 60 fps or this is because I have 32GB of RAM and really need more for that server. Personally, can't stand motion reprojection and want 72 fps to enjoy the sim. One would likely need a 3090 or 6900xt to run textures on high with a reasonable framerate there.

Also, you should probably look for ways to reduce VRAM consumption by the WMR itself, if not yet done.

 

Thanks. I didn't know that. It could be a thing. It's just a bit annoying that we need i9th and 3090ti to run it anyhow playable in VR while having any sort of the details to it.
I mean i7/3080ti/64GB and it's still bottlenecking every now and then. Then I play the newest games with graphic 100% better than DCS and it's just butter smooth...
Thank you for pointing this out.

(edit: I'll try smaller preload radius, maybe that would help).


Edited by MartinVoy

System spec: Windows 10 Pro / i7-12700K / 3080Ti / 64GB / m2 SSD / Orion F16 Throttle / TM Warthog Stick / TPR Rudders / JetSeat / Reverb G2.

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Ya, this issue was happening to me quite often with my RTX 2080 running OpenXR. I haven't seen it since upgrading to RTX 3090 three weeks ago. 

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11 minutes ago, timcat said:

Ya, this issue was happening to me quite often with my RTX 2080 running OpenXR. I haven't seen it since upgrading to RTX 3090 three weeks ago. 

I don't remember it on 2070, maybe because of 17-25 FPS all the time anyway. Or maybe because I was running without OpenXR back then, I switched to OXR after upgrading to 3080ti.
Any ideas how to avoid that? The funny thing is I get the same FPS with SteamVR now and OpenXR, so maybe I should just switch back to SVR. 
If I uncap FPS, I get 45-70FPS (depends on MP server) both with OXR and SVR. I know I'm pushing my settings/textures/sliders hard, but...If I'd go to lowest settings in DCS I get like 60-70 FPS and a bit of stutter anyway, so I just push sliders up and use motion reprojection.
I think I'll go back for a while to SVR and try its own motion reprojection, to se if I get VRAM overflows too.

System spec: Windows 10 Pro / i7-12700K / 3080Ti / 64GB / m2 SSD / Orion F16 Throttle / TM Warthog Stick / TPR Rudders / JetSeat / Reverb G2.

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anyone running a 3090 ti that has recommended settings running a HP reverb g2

Thanks

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FYI, I've noticed that some of the random stuttering and frame drops or dropping to super low FPS and getting stuck seems to be if too many registry entries are made for the OXR toolkit.  Usually what I do is find what I want it to be by playing with it, then wiping the registry by opening in safe mode and hitting CTRL+F1+F2+F3 to wipe it clean, getting out of DCS and then reopening without the toolkit in safe mode and only touching the settings I want to where I want them.  Not sure what it is but its almost like its just causing the CPU to try and compute more than it needs to or something, but that usually helps smooth things back out. 

 

worth a try anyway if you're fiddling with it a bunch. 

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I’m running a 3080Ti 10900k 64GB and no problems. My settings are maxed out.

Whoever mentioned fps is the same in both OXR and Steam…. Yeah that’s right. OXR doesn’t give you more fps, it gives you more VRAM as it doesn’t load up steam. It also gives you variable motion reprojection so it can drop down to lower rates when needed. It’s not about fps it’s about judder free gameplay with higher settings.

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45 minutes ago, MartinVoy said:

I don't remember it on 2070, maybe because of 17-25 FPS all the time anyway. Or maybe because I was running without OpenXR back then, I switched to OXR after upgrading to 3080ti.
Any ideas how to avoid that? The funny thing is I get the same FPS with SteamVR now and OpenXR, so maybe I should just switch back to SVR. 
If I uncap FPS, I get 45-70FPS (depends on MP server) both with OXR and SVR. I know I'm pushing my settings/textures/sliders hard, but...If I'd go to lowest settings in DCS I get like 60-70 FPS and a bit of stutter anyway, so I just push sliders up and use motion reprojection.
I think I'll go back for a while to SVR and try its own motion reprojection, to se if I get VRAM overflows too.

The problem never occurred when using SVR for me. It started when I switched OpenXR. I found it would only occur if the framerate got below the 22fps threshold (MR on) even for a small amount of time. When I lowered multiple settings to keep my framerate from never dipping below 22fps the problem mostly went away. It would still occur from time to time going to the map (F10).

Now it never happens.🤩

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2 часа назад, MartinVoy сказал:

Thanks. I didn't know that. It could be a thing. It's just a bit annoying that we need i9th and 3090ti to run it anyhow playable in VR while having any sort of the details to it.
I mean i7/3080ti/64GB and it's still bottlenecking every now and then. Then I play the newest games with graphic 100% better than DCS and it's just butter smooth...
Thank you for pointing this out.

(edit: I'll try smaller preload radius, maybe that would help).

 

Yeah, I hear you. But still DCS runs better in VR with OpenXR than it was ever before... maybe it was good like that in 2.5.6 but since 2.7.x it became worse and worse so OXR did kind of save us. At least for now, until ED fixes more things with updates accidently killing the VR performance in the process 😂

BTW you don't actually need i9, you can even get the same performance with i5.. or even better with i5 if you can clock it higher. It's all about single core performance for DCS and i9 is for something else completely. If I had i9 I would be disabling all it's extra cores/features just to push 3-4 cores to the highest possible clocks for DCS.

I'd blame NVIDIA for skimming on VRAM in 30xx cards, if we had even 16 GB we would be fine, and having to buy 3090 for higher VRAM alone is kind of ridiculous. You can monitor VRAM allocation while flying and after a while it gets over the VRAM available and that is when the problem starts. Also, could be that DCS is not cleaning it properly, who knows. If we had 16GB we could be flying for 3-4 hours straight without this issue. Luckily low terrain texture still looks fine in VR (arguably even better for less shimmering and better spotting against it) and saves a couple of gigs of VRAM. Preload radius never helped me with this, it's more about RAM than VRAM. As @timcat mentioned, don't go to external views or F10, so game doesn't try to put extra things into VRAM and you'll be flying OK for longer.


Edited by Fiztex
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