OpenXR for Varjo AERO using OpenCompositeACC mod: works great, very smooth

[Brainfreeze]

2 minutes ago, fastf1nger said:

Is the tutorial on the 1st page still up to date?
I´m a little bit confused after reading the last 8 pages

Always wondering that too

[peachmonkey]

7 hours ago, Brainfreeze said:

Always wondering that too

hey, guys, @Brainfreeze, @fastf1nger

i'll update the first page to reflect the changes, however they are minimal and non-impacting. The overall approach is pretty much the same, except for an updated .dll and the .ini files, however the files referenced in the first page still work with the current DCS releases.

[zildac]

Do we still need to use the "cross eyed" tool from ED? I cloned left to right (I'm right eye dominant) but swapping "Top and Bottom" puts me way too high in the cockpit. I don't notice any issue without the swap. Just received my Aero today so still trying to get everything dialled in. It's a very different beast to the G2!

[peachmonkey]

32 minutes ago, zildac said:

Do we still need to use the "cross eyed" tool from ED? I cloned left to right (I'm right eye dominant) but swapping "Top and Bottom" puts me way too high in the cockpit. I don't notice any issue without the swap. Just received my Aero today so still trying to get everything dialled in. It's a very different beast to the G2!

if the in-game picture doesn't skew when you tilt your head then no need to run it. 

The 'position' of your head using OpenXR does put you way above everything. I need to 'recenter' my VR view using Num5 every time I launch the game. Recenter has nothing to do with the cross-eyes WMR tool.

[da_drake]

I keep getting this error when launching DCS.

Reading through the OpenComposite guide it it mentions this about DCS:

Quote

* These games use an old version of D3DCompiler_47.dll that is incompatible with some OpenXR Runtimes. If you experience an error with OpenComposite resulting in a -2 error code then find the D3DCompiler_47.dll in the game install dir and rename to D3DCompiler_47.dll_orig. This will then use the one from your system path that should be the latest version if your system is up to date.

I tried using the original D3DCompiler_47.dll, the one that came with OCXR_WMR_ACC versions 0.6.1 and 0.6.3 as well as deleting D3DCompiler_47.dll from my DCS\bin folder as the guide mentions, but no dice.

 

Resolved! Was chatting on the Varjo discord and someone suggested doing a full DCS repair and checking the "Search for extra files after repair" checkbox. I completely missed that option during the couple of full repairs I did. I must have had some VR shaders or something, and I know I had something to modify the NVGs in VR in there, that I must not have properly cleaned out. Everything is working well, can easily swap back and forth between Steam OpenVR and Varjo OpenXR with ease. Thanks for taking the time to look at this with me!

Edited July 1, 2022 by da_drake

[Maksim Savelev]

Gentlemen, I've got a question. Does this method of running Varjo through the hacked/programmed OpenXR make reprojection possible for the Aero? 

Edited July 6, 2022 by Maksim Savelev

[zildac]

Gentlemen, I've got a question. Does this method of running Varjo through the hacked/programmed OpenXR make reprojection possible for the Aero? 

No

[Maksim Savelev]

Copy that. Thank you

[darkman222]

I tried it as described in the top most post. Works perfectly.

But as we dont have motion reprojection, how do you guys get a smooth experience. If I roll the jet around I see the horizon split off with double vision. My system can achive 60 fps steady. Motion reprojection on or off does not help either.

[zildac]

I tried it as described in the top most post. Works perfectly.
But as we dont have motion reprojection, how do you guys get a smooth experience. If I roll the jet around I see the horizon split off with double vision. My system can achive 60 fps steady. Motion reprojection on or off does not help either.

Have you tried enabling vsync in VB?

[darkman222]

Yes VSync is on. But when I roll the aircraft the image gets blurry and splits apart between both eyes.

Edit: The first post also tells not to activate Vsync, but I tried it anyway without success.

 

 

Edited July 6, 2022 by darkman222

[dburne]

I have pretty good luck with vsync on locked at 45 fps. Long as I have my settings where I can maintain 45 fps. My image certainly does not get blurry or split apart when I roll the aircraft. Can't explain why yours does though.

I would note I am running through native Steam VR though. I tried the Open XR Mod for a bit though and don't recall having that with it either.

Edited July 6, 2022 by dburne

[Supmua]

2 hours ago, darkman222 said:

Yes VSync is on. But when I roll the aircraft the image gets blurry and splits apart between both eyes.

Edit: The first post also tells not to activate Vsync, but I tried it anyway without success.

 

 

 

I just don't get the splitting images with my setup and I play regularly although mostly Harrier and Apache these days.  The cockpit can exhibit slight motion blur (because no motion smoothing) if you move your body side to side quickly on an x axis, but I don't really do that when I roll.

Static capture of those parameters won't help much because that only shows one instant of who knows what, and how do other people know it correlates with whatever you're doing at that time.  Try using OpenXR toolkit with Advanced overlay to display CPU and GPU frametime numbers from within DCS if you are using OpenXR.  Or use fpsVR to do the same thing if you're using Steam's OpenVR mode.  Then capture a video while doing the roll then we can see exactly what happens while checking out those numbers in real-time.

[darkman222]

Can someone please give me a quick help here, what exactly Vsync does? Sorry noob question: But we dont have motion reprojection, got it. Which is like motion smoothing I guess. So what does Vsync do? What am I looking for to achieve with Vsync?

It does reduce the frame rate to 45 fps and extrapolates the missing images to match 90 fps then?

My system can achieve 60 fps. So it should be sufficient to keep 45 fps.

[dburne]

3 hours ago, darkman222 said:

Can someone please give me a quick help here, what exactly Vsync does? Sorry noob question: But we dont have motion reprojection, got it. Which is like motion smoothing I guess. So what does Vsync do? What am I looking for to achieve with Vsync?

It does reduce the frame rate to 45 fps and extrapolates the missing images to match 90 fps then?

My system can achieve 60 fps. So it should be sufficient to keep 45 fps.

It does reduce the framerate to 45 fps in most cases. Likely all cases with the Aero lol. You can also lock it there in the analytics window-performance tab. Locked at 45 fps and I find my GPU runs a little cooler.

But no it does not interpolate any frames. I myself fly it this way and am happy with it. I would note also I use Steam VR rather than the Open XR Mod, but that does not really matter in this case.

Edited July 7, 2022 by dburne

[darkman222]

Okay got it. As stated we dont have motion reprojection / motion smoothing, but the common practice is to lock the Aero to 45 fps to avoid juddering. Which is like irregular stutters.

But without motion smoothing fast movements will always get double images, blurred edges until we have a motion smoothing / projection equivalent OR a GPU that can deliver steady 90 fps steady.

Is that correct?

[Supmua]

Yeah.  Unless you can maintain the same fps as the screen refresh rate you’ll never get perfect images.  For now don’t go crazy on the head movements when you fly and just look left right up down when you have to.

I don’t really lock fps if I play in OpexXR mode, the frame pacing is better than SteamVR.  I do get better images in SteamVR though but mostly because of Reshade not the api itself.

Edited July 7, 2022 by Supmua

[fastf1nger]

In my case and with my system, i get better fps and frametimes when i disable OpenVR and only enable OpenXR in Vario Base. Enabling VSync and/or locking it to 30 or 45 doesn´t help in my case. Also reducing resolution to....lets say 3000 hoizontal in OpenXR Toolkitdoesn´t make a different for me, tried it back and forward. But will test this more  Clarity is still amazing and performance is ok in most cases, just Marianas and some populated areas in South Atlantic will get stutters here and there....

[CoaCoaPuff]

Good Day Everyone-

Please forgive me if this issue has already been addressed.  I finally got OpenXR to work with DCS with OpenComposite.  The issue I have, which is a silly one, is now that I am not using SteamVR anymore, how the heck do I recenter what I am seeing in the Varjo?  The image is wayyy too high and I have to back up as well as look down to see the screen LOL.  Also, OpenVR is still popping up on the screen as well as the OpenXR menu, is it suppose to be like that? Any help would be greatly appreciated.

 

Thanks,

10900K | ROG Maximus XII Formula | NVidia GeForce RTX3090 | GSKill 64GB | DCS on 500GB NVMe | Varjo Aero

Edited July 24, 2022 by CoaCoaPuff

[Blackdog]

1 hour ago, CoaCoaPuff said:

Good Day Everyone-

Please forgive me if this issue has already been addressed.  I finally got OpenXR to work with DCS with OpenComposite.  The issue I have, which is a silly one, is now that I am not using SteamVR anymore, how the heck do I recenter what I am seeing in the Varjo?  The image is wayyy too high and I have to back up as well as look down to see the screen LOL.  Also, OpenVR is still popping up on the screen as well as the OpenXR menu, is it suppose to be like that? Any help would be greatly appreciated.

 

Thanks,

10900K | ROG Maximus XII Formula | NVidia GeForce RTX3090 | GSKill 64GB | DCS on 500GB NVMe | Varjo Aero

 

Same DCS recenter VR keybind -- hit it once and you're good to go.

Not sure what you mean by the OpenXR menu, but Aero uses SteamVR for tracking, so that's why you see the OpenVR pop-up.

[dburne]

53 minutes ago, CoaCoaPuff said:

Thanks BlackDog - that seems to work ONCE I am in the cockpit but when the game initially starts, the recenter VR keybind doesnt work.  Any ideas?

Try assigning the VR Recenter in the UI Layer rather than the plane module layer. 

[CoaCoaPuff]

On 7/24/2022 at 8:32 PM, CoaCoaPuff said:

Got it working!!!  Thanks fellas!!!

10900K | ROG Maximus XII Formula | NVidia GeForce RTX3090 | GSKill 64GB | DCS on 500GB NVMe | Varjo Aero

[Brainfreeze]

On 6/10/2022 at 4:04 PM, peachmonkey said:

hey, guys, @Brainfreeze, @fastf1nger

i'll update the first page to reflect the changes, however they are minimal and non-impacting. The overall approach is pretty much the same, except for an updated .dll and the .ini files, however the files referenced in the first page still work with the current DCS releases.

Still have a nagging question:  You say " I recommend you navigate to the latest release page: https://gitlab.com/znixian/OpenOVR/-/tree/openxr " but all I see there is a link to a openvr_api.dll which you provide a link to yourself.  So not sure if there is anything on that release page that is useful to our process and needs to be downloaded ?

[darkman222]

In short: replace openvr_api.dll with the one from Gitlab or the one I attached. It works for me. Located at: C:\Program Files\Eagle Dynamics\DCS World OpenBeta\bin

Then create a shortcut and add in the "target" box:

--force_steam_VR

Now start DCS with that shortcut. Works for me with the Varjo Aero.

 

openvr_api.dll

Edited September 28, 2022 by darkman222