How to force to work with SteamVR (multithreading) again?

[Supmua]

fpsVR works as long as you use OpenXR via StramVR, because it supports OpenXR but only through Steam layer.  I still use fpsVR to track frametimes with DCS MT. 
 

If you read recent SteamVR update blogs you’ll see that OpenXR is now the preferred API for Steam because it’s more modern and no longer being used in newer games just like how Windows 11 is now preferred over 10. 

[crazyave]

When I first installed the update I got stuck in this loop trying to run MT where if SteamVR was started then DCS would close, and if DCS was open SteamVR would close.  It was not happy at all.  I finally somehow ended up with the OpenXR for WMR kind of working.  I had to force OpenXR from DCS with the --force_OpenXR option.  However, I had to install the OpenXR tools for WMR to control the resolution setting, which does seem to work.  The only big issue left with MT is that when I start a mission DCS hangs at 100% CPU on one core until I click away from DCS and back on it get the "This program has stopped responding..." or somethign like that, then I just click to wait and it instantly comes back.  Really weird.  The performance is more close to even now that I'm doing things like this.  I'd still love to hear from ED about what the best way to run OpenXR is and how to verify you are indeed running it that way.

[jurinko]

I think I got it running, MT via SteamVR and reprojection on. There are almost no artifacts and it runs awesome. My settings are here:

 

[Supmua]

5 hours ago, crazyave said:

When I first installed the update I got stuck in this loop trying to run MT where if SteamVR was started then DCS would close, and if DCS was open SteamVR would close.  It was not happy at all.  I finally somehow ended up with the OpenXR for WMR kind of working.  I had to force OpenXR from DCS with the --force_OpenXR option.  However, I had to install the OpenXR tools for WMR to control the resolution setting, which does seem to work.  The only big issue left with MT is that when I start a mission DCS hangs at 100% CPU on one core until I click away from DCS and back on it get the "This program has stopped responding..." or somethign like that, then I just click to wait and it instantly comes back.  Really weird.  The performance is more close to even now that I'm doing things like this.  I'd still love to hear from ED about what the best way to run OpenXR is and how to verify you are indeed running it that way.

I find MT takes a while to load also, especially textures/shaders at the start of a mission can take several seconds to come up.

To verify OpenXR runtime you can use OpenXR Explorer (https://github.com/maluoi/openxr-explorer).  Once you load DCS, run this and look at top left section and it should say which type of OpenXR runtime is being use, only one can be active at at time (SteamVR, Varjo, HTC, etc.).  Alternatively, recent SteamVR update has similar option in the developer's tab (desktop only not in headset).  OpenXR toolkit log file also does the same thing.  These tools can also show active extensions or layers, if you have redundant or unwanted OpenXR extensions/layers it will also show (these can have negative effect on performance and may need to be uninstalled or disabled, some people may have a few left over old xrnecksafer layers for example which can cause issues).

Edited March 19, 2023 by Supmua

[crazyave]

Ok, so I got that and it does show which runtime is active, should the DCS runtime show up in that list?  I'm only seeing SteamVR and WMR.  Also, I still can't get the current resolution of the headset anywhere, how do you set or know what your "supersamping" or pixeldensity/etc is set to in OpenXR?

[Supmua]

Runtime in this case is a platform that executes OpenXR API, so it would be either SteamVR or WMR in your case.  One runtime can be active at a time.

Final resolution can be seen in a log file from either SteamVR dev menu or OXR toolkit depending on which runtime you are using. 

[IR.Clutch]

It's not in the patch notes, but OpenVR started working in MT. Trying to get Reshade up and running, no luck

[YoYo]

3 minutes ago, IR.Clutch said:

It's not in the patch notes, but OpenVR started working in MT. 

Are you sure? Which entry did you use?

This one?

--force_enable_VR --force_steam_VR

Edited March 22, 2023 by YoYo

[Baldrick33]

2 minutes ago, IR.Clutch said:

It's not in the patch notes, but OpenVR started working in MT. Trying to get Reshade up and running, no luck

I don’t think it does work, if you check the DCS.log it will say OpenVR not supported, falling back to OpenXR

[IR.Clutch]

3 минуты назад, YoYo сказал:

Are you sure? Which entry did you use?

This one?

--force_enable_VR --force_steam_VR

Yes, this one. At least DCS is not crashing like before.  Just got home from work, testing.

[IR.Clutch]

It looks like I was too hasty to report))  OpenVR debug tool is not opening

I have this entry in autoexec.cfg - force_cross_eye_recovery_tool = true

and it opens OpenVR debug

Edited March 22, 2023 by IR.Clutch

[IR.Clutch]

40 минут назад, Baldrick33 сказал:

falling back to OpenXR

I'm falling back to SINGLE

[unlikely_spider]

2 hours ago, IR.Clutch said:

I'm falling back to SINGLE

Yeah - I've found that running the executables (either single thread or multi) with  --force_OpenXR and I get bad stutters when moving my head around in the cockpit. If I just run the normal executable, without --force_OpenXR (so it opens SteamVR) then the stutters are gone. I think you can't do the MT executable this way?

I'm on a G2 headset, RTX 3080, and Ryzen 5800X3D.

Any input would be appreciated.

Edited March 22, 2023 by unlikely_spider

[IR.Clutch]

9 минут назад, unlikely_spider сказал:

I think you can't do the MT executable this way?

i can't live(fly) without Reshade so I will wait for OpenVR to start working in MT

Edited March 22, 2023 by IR.Clutch

[theGozr]

tried both OpenXr and SteamVR I get better FPS and clearer with SteamVR  but now I cannot revert to SteamVR   !!!!!!   Dammit  I need to find the solution

[jurinko]

7 hours ago, theGozr said:

tried both OpenXr and SteamVR I get better FPS and clearer with SteamVR  but now I cannot revert to SteamVR   !!!!!!   Dammit  I need to find the solution

Open the Steam window, click "VR" thick letter buton on top which opens SteamVR small window, click on settings, developer settings and select use steamvr as openxr runtime. To revert it open wmr window and wait until it complains about smthing and wants to fix it. 

[theGozr]

Thanks 

[IR.Clutch]

Still no OpenVR, fallback to OpenXR...

 

Edited April 13, 2023 by IR.Clutch

[YoYo]

23 minutes ago, IR.Clutch said:

Still no OpenVR, fallback to OpenXR...

 

 

No any improvements for VR: 

Even no solution for reversed mask?

[BIGNEWY]

5 minutes ago, YoYo said:

No any improvements for VR: 

Even no solution for reversed mask?

MASK should be fixed, they may have missed it in the log. I have tested a fix. 

Regarding OpenVR 

From the team MT does not support openVR currently, it only supports OpenXR
You have to set your OpenXR runtime to use SteamVR. Open SteamVR > Settings > Enable Advanced > Developer > Switch OpenXR runtime to SteamVR.

https://store.steampowered.com/news/app/250820/view/2396425843528787269

[IR.Clutch]

2 минуты назад, BIGNEWY сказал:

rom the team MT does not support openVR currently, it only supports OpenXR
You have to set your OpenXR runtime to use SteamVR. Open SteamVR > Settings > Enable Advanced > Developer > Switch OpenXR runtime to SteamVR.

Thanks, but I can no longer fly without Reshade. I don't know if it can be used with OpenXR. As far as I know, only OpenVR.

[YoYo]

28 minutes ago, IR.Clutch said:

Thanks, but I can no longer fly without Reshade. I don't know if it can be used with OpenXR. As far as I know, only OpenVR.

Me too we need OpenVR for MT pretty please!

[gcze]

I need SteamVR for proper reprojection. There are terrible artifacts in OpenXR with reprojection, regardless of settings and frame times.

[YoYo]

5 minutes ago, gcze said:

I need SteamVR for proper reprojection. There are terrible artifacts in OpenXR with reprojection, regardless of settings and frame times.

Right as well, this is the second issue.

[dburne]

Using Open XR runtime for DCS is still pretty new for them. I am sure they will continue to improve it as time goes on. But yeah definitely we should make our wishes known to them. 

Are you guys saying those items you can no longer use also do not work in Steam VR's Open XR runtime?