OpenComposite (AKA OpenOVR) - bypass SteamVR for Oculus Rift

[Janeco]

After steam vr update my pc would just reboot in il-2 after a while, while on opencomposite everything works and I dare to say more smoothly then on steam Vr.

[ironk79]

8 hours ago, Janeco said:

After steam vr update my pc would just reboot in il-2 after a while, while on opencomposite everything works and I dare to say more smoothly then on steam Vr.

did more testing, its def. smoother and less hickups that i thought to be tracking issues or similar (fast head movement left to right at times).

[Wulfen]

I have been using it the last few days, it definitely streamlines the process reducing overheads, so it`s a plus on that front. There is also a fix on the oculus reddit to reduce home 2.0 to bare minimum and black screen, reduces my GPU load to less to ~10% when oculus is fired up. 

Edited December 1, 2018 by Wulfen

[dburne]

How is this Open Composite better than Steam VR?

I personally do not care for Steam and really wish 1CGS would implement native support for the Rift.

 

But Steam VR seems pretty lean to me already. What advantage would running through Open Composite really have?

I mean the Rift still has to go through two runtimes, Oculus and Steam VR or Oculus and Open Composite.

[Wulfen]

11 minutes ago, dburne said:

How is this Open Composite better than Steam VR?

I personally do not care for Steam and really wish 1CGS would implement native support for the Rift.

 

But Steam VR seems pretty lean to me already. What advantage would running through Open Composite really have?

I mean the Rift still has to go through two runtimes, Oculus and Steam VR or Oculus and Open Composite.

I can`t answer that, but all I can say it`s a hell  of a lot smoother and more streamlined that what I had before with fluting between oculus and steam vr. It just seems to be quicker in the game starting and less hassle, consequently I would be surprised to find it not better on resources. Try it out and see, it`s a quick install and easy to remove. Also the oculus hack is a lot less taxing on the system/gpu as well, it`s like getting rid of bloatware.

 

https://www.reddit.com/r/oculus/comments/8uf1sm/oculushomeless_use_dash_without_home_20/

 

Edited December 2, 2018 by Wulfen

[ironk79]

21 hours ago, Wulfen said:

I can`t answer that, but all I can say it`s a hell  of a lot smoother and more streamlined that what I had before with fluting between oculus and steam vr. It just seems to be quicker in the game starting and less hassle, consequently I would be surprised to find it not better on resources. Try it out and see, it`s a quick install and easy to remove. Also the oculus hack is a lot less taxing on the system/gpu as well, it`s like getting rid of bloatware.

 

https://www.reddit.com/r/oculus/comments/8uf1sm/oculushomeless_use_dash_without_home_20/

 

tried it ?

together with the Open Composit and 3.007 update a very noticeable increase in performance. now we only need career mode fixed, still huge lows in the 40-60 range while flying mission against a hand full opponents.

[dburne]

I got a pretty nice performance boost just from the 3.007 update.

[ironk79]

On 12/1/2018 at 3:31 PM, Janeco said:

After steam vr update my pc would just reboot in il-2 after a while, while on opencomposite everything works and I dare to say more smoothly then on steam Vr.

not a big problem but was wondering, how do you start il2 with open comosite? i always started the game from within the steamvr home, but with open composite i start it via desktop shortcut. problem is i always after boot up  have to go to settings and activate vr hmd and restart, after that i can play vr.

starting il2 from oculus home doenst work, i only get a vr loading screen, but game donst start.

 

[Janeco]

on mine i just click launch on the launcher and it opens with opencomposite

 

[ironk79]

ok, doesnt work for me, switching back to steamVR, and than to Composite didnt solve the issue. ok, no big deal, at least it works with  the extra step.

 

[Alonzo]

On 12/2/2018 at 9:00 AM, dburne said:

How is this Open Composite better than Steam VR?

I personally do not care for Steam and really wish 1CGS would implement native support for the Rift.

 

But Steam VR seems pretty lean to me already. What advantage would running through Open Composite really have?

I mean the Rift still has to go through two runtimes, Oculus and Steam VR or Oculus and Open Composite.

 

I think what they're doing is mapping OpenVR API calls directly into Oculus runtime API calls, instead of building a multi-API aware library (which SteamVR is). This allows OpenComposite to be a bit leaner -- it doesn't have to account for any SteamVR / OpenVR type stuff, it just tightly binds to the Rift API and won't work with anything other than Rift. 

 

So yes, it's still two runtimes, Oculus and OpenComposite, but the OpenComposite portion is a lot 'thinner' than SteamVR. And the Oculus runtime is optimized tightly for Rift, so the combo is pretty lean also. Especially in IL2 it makes a difference because every ounce of CPU power you can claw back is important.

[RedeyeStorm]

20 hours ago, ironk79 said:

ok, doesnt work for me, switching back to steamVR, and than to Composite didnt solve the issue. ok, no big deal, at least it works with  the extra step.

 

Had the same issue. What I do is open regular steam and right click on the game. Then select start with steamvr and presto. Steamvr doesn't open when jou select chat option. 

Edited December 4, 2018 by [Pb]RedeyeStorm
Autofill

[ironk79]

8 hours ago, [Pb]RedeyeStorm said:

Had the same issue. What I do is open regular steam and right click on the game. Then select start with steamvr and presto. Steamvr doesn't open when jou select chat option. 

thanks, will try.

this is also the error message i get, but it stilll worked so far

OpenComposite DLLMain ERROR: Cannot init VR: unsuported apptype 6

 

Edit: Just tried your method - works like a charm ?

Edited December 4, 2018 by ironk79

[RedeyeStorm]

Great to be of help. By the way, I have no error message.

[Panzerlang]

I tried the opencomposite.ini fix suggestion, to try and stop IL2 playing sound through the Rift, but nada joy.

[Blitzen]

I feel a bit dim-I’ve gone to the site but can’t figure out where the download is....

[II./SG.1-MarkWilhelmsson]

On 10/4/2018 at 10:16 AM, Alonzo said:

 

Did you get it fixed? You also need to create an .ini file and tell OpenComposite not to try to hook audio. Then IL2 will work with it.

 

Instructions from another thread:

• Get the latest 64-bit DLL from https://ci.appveyor.com/api/projects/ZNix/openovr/artifacts/x64/openvr_api.dll?branch=master&job=Platform%3A+x64&pr=false
• In your IL-2 bin/game folder, rename the existing openvr_api.dll to (say) openvr_api-default.dll
• Copy over the 64-bit DLL you downloaded
• Create a opencomposite.ini in the same folder with one line with the text:  enableAudio=False
• Start IL-2 via Steam as usual -- SteamVR should not start this time around, OpenComposite is hooking you directly to the Oculus runtime

 

Ive done all this but it still does not work for me. Trying to open through steam menu it acts like it is about to start the game but then just stops. Nothing occurs. When I try to start the game through the Oculus app menu, the IL2 splash menu appears and says loading but it never does.

[D13th_zaelu]

Small issue on my side. From time to time the Steam is starting and loading Steam VR. I do not have the game on Steam.

While playing I hear o women voice saying: "one Moment" then Steam VR is starting and interrupting the game... I need to put HMD down close manually the darn thing that sometimes restarts in one minute.

Anyone else had this?

[piwakawaka]

Has anyone got this working with the Oculus Quest over Link Cable? With today's OpenComposite 32-bit .dll I just get an IL-2.exe application error (0xc000007b) and it fails to run. With the 64-bit version nothing happens after clicking "run" in the launcher (which itself disappears).

 

Edited July 17, 2020 by piwakawaka

[SIA_Mal]

Hey guys,

I need to create the opencomposite.ini in the game folder or i can use it were i downloaded the opencomposite software?

 

I did the system-wide installation.

[dburne]

1 hour ago, TWC_Mal said:

Hey guys,

I need to create the opencomposite.ini in the game folder or i can use it were i downloaded the opencomposite software?

 

I did the system-wide installation.

 

Just run it from the system wide install.

[SIA_Mal]

Just now, dburne said:

 

Just run it from the system wide install.

You mean, place the opencomposite.ini in the opencomposite folder installation?

[dburne]

1 minute ago, TWC_Mal said:

You mean, place the opencomposite.ini in the opencomposite folder installation?

 

No you do not need to do that with the system wide install.

Just run the program and change it from Steam VR to Open Composite.

[SIA_Mal]

1 minute ago, dburne said:

 

No you do not need to do that with the system wide install.

Just run the program and change it from Steam VR to Open Composite.

Ok, but doing only that i wont change the SS in use.

Im creating the ini so i can set a SS.

[dburne]

Just now, TWC_Mal said:

Ok, but doing only that i wont change the SS in use.

Im creating the ini so i can set a SS.

 

OK, I have never used OC for setting SS I use the Oculus Tray Tool for that.

[SIA_Mal]

Just now, dburne said:

 

OK, I have never used OC for setting SS I use the Oculus Tray Tool for that.

Right. Will check that tool too.

[HunDread]

19 hours ago, TWC_Mal said:

Hey guys,

I need to create the opencomposite.ini in the game folder or i can use it were i downloaded the opencomposite software?

 

I did the system-wide installation.

 

My opencomosite.ini file is in this folder:

[.................]\IL-2 Sturmovik Great Battles\bin\game

 

I do not have the system wide installation but you can check this folder if the installation did put this file in there for you or not.

[SIA_Mal]

On 9/17/2020 at 9:09 AM, HunDread said:

 

My opencomosite.ini file is in this folder:

[.................]\IL-2 Sturmovik Great Battles\bin\game

 

I do not have the system wide installation but you can check this folder if the installation did put this file in there for you or not.

It didnt so i put it there, it seems to be working.

Thanks.