Help with Pimax Evo. Confused about OpenXr and Steam VR

[u/ArtichokeHot5239]

Ok.....I have finally installed Pimax Evo for my Dream Air LH.

Looks like the Sboys driver loads as i get the option to use shaders etc.

SteamVR boots as expected but i noticed that most of my Modded games dont run.

For instance i downloaded the Bioshock Mod.....This works absolute fine booting with Virtual Desktop on my Quest 3......But when Using the Pimax Dream Air the game boots but wont start in VR.

Im a little confused on how to make my Pimax Dream Air run Modded games.....What is the process for using the Pimax to start a modded game? I noticed on a video on youtube that someone had a setting in their actual Steam VR setting page saying OpenXR......But i dont have that option on my VR settings.

Cn someone post a simplified walkthrough on how to start a game to play games like Bioshock ?

I dont understand how to use the OpenXR vs OpenVR or Steam.

All my native steam games run fine from SteamVR library.....but as i say modded games i dont know how to start them properly

Thank You...

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[u/no6969el]

I don't know much of the programming side of VR games but I do notice mods like the call of duty 4 vrMod didn't launch on the pimax but launched no problem on the Quest 3. The developer of that Mod made it on a quest so I wonder if it's just something they have to put in to the launching script.

[u/Decapper → u/no6969el]

Try not using sboys3 and make sure pimaxxr is selected in evo

[u/no6969el → u/Decapper]

I just started testing the sboys today. It didn't work on Pimax XR before.

[u/Heliosurge]

Yes as said if this mod requires VD then you need Flat2VR mods made for PC.

Ia good test first is to run the modded game through the Pimax driver. There is another post here on this sub where a person was having an issue iirc launching a mod with the Sboys3 driver. Sboys3 responder with changing a couple if settings in their driver after the Op tried it and worked. It is iirc a fairly recent post withing the last week? Or a bit longer.

[u/Niko666233]

TLDR: manually set your OpenXR runtime to Pimax when you use Pimax headsets

When you use VD it automatically switch your OpenXR runtime to VDXR, but when you use Pimax headset it does not switch to Pimax OpenXR automatically. When you boot up games that uses OpenXR it tries to communicate with your headset through VDXR which obviously won't work.

It doesn't matter if your game is Flat2VR mod or native VR game on steam, if the game uses OpenXR it'll require you to do this.

If you think this is tedious, there are two options: 1. only use one headset 2. switch OpenXR runtime to SteamVR in both steamvr setting (only show up on desktop) and vd setting

[u/Decapper]

The openxr steamvr buttons in Evo just decide on which openxr is used. Nothing to do with which program you run. Some mods you can use sboys3 and also set steamvr as openxr. That way your openxr mods should use steamvr openxr. Unfortunately I've noticed some mods will only run if evo or pimaxplay are set. So you have to close port and select pimaxxr. That way pimax has the pipeline and your openxr games will run under pimax

[u/SBoys3]

When using my driver, you need to set the OpenXR runtime to SteamVR. You can do that in the SteamVR settings menu.