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For anyone using a WMR headset like the HP Reverb G2 with the Oasis Driver I have good news for you. With the preview build released a week or two ago the ability to use SteamVR's Room View was added, but not only that, it looks like another piece of software is usable now with the Room View support. Check out the link below.
github.com
This basically adds a new menu to SteamVR that allows controlling passthrough in supported OpenXR games/apps. There's a mode that even lets you use a chromakey mask. It won't work out of the box with VaM though. I had to switch over to an OpenComposite modded OpenVR plugin to get it to work.
If you skip to section C of the guide below it has some helpful info about using OpenComposite if needed. I'd go with just downloading the modded "openvr_api.dll" rather than using the patcher method. Also, starting the game with "VaM_Updater.exe" and using "Launch VR" might be necessary if "VaM (OpenVR).bat" stops working.
hub.virtamate.com
Once everything's setup the plugins below will probably help if you want to try the passthrough with chromakey.
hub.virtamate.com
hub.virtamate.com
Edit: This modded "openvr_api.dll" made for Skyrim might work better than the "official" OpenComposite version.
Edit2: It looks like along with Masked (Chromakey) the option of Alpha blend also works!
GitHub - Rectus/openxr-steamvr-passthrough: OpenXR API Layer for SteamVR camera passthrough
OpenXR API Layer for SteamVR camera passthrough. Contribute to Rectus/openxr-steamvr-passthrough development by creating an account on GitHub.
github.com
This basically adds a new menu to SteamVR that allows controlling passthrough in supported OpenXR games/apps. There's a mode that even lets you use a chromakey mask. It won't work out of the box with VaM though. I had to switch over to an OpenComposite modded OpenVR plugin to get it to work.
If you skip to section C of the guide below it has some helpful info about using OpenComposite if needed. I'd go with just downloading the modded "openvr_api.dll" rather than using the patcher method. Also, starting the game with "VaM_Updater.exe" and using "Launch VR" might be necessary if "VaM (OpenVR).bat" stops working.
How to launch without SteamVR (Performance Increase) - Guides -
As of right now (June 2025), there are 3 methods I know of to launch in VR without SteamVR. Will go through them quickly to increase your performance. This guide is the basic guide. Advanced guide here What is this? It is a list of methods to...
hub.virtamate.com
Once everything's setup the plugins below will probably help if you want to try the passthrough with chromakey.
Camera Background Color - Plugins + Scripts -
Plugin to change the background color of all cameras: main-, thumbnail-, screenshot- and window-camera. Created in response to a forum post. Smart VR users figured out ways to use this Plugin as passthrough helper: How to use Passthrough in VAM...
hub.virtamate.com
Chroma Keyifier - Plugins + Scripts -
If you'd like to support continued development of this and more plugins, consider subscribing to my Patreon for just $1 a month Usage Add the ChromaKeyifier plugin to any of the following Atoms: CustomUnityAsset Capsule Cube Sphere Slate Wall...
hub.virtamate.com
Edit: This modded "openvr_api.dll" made for Skyrim might work better than the "official" OpenComposite version.
Edit2: It looks like along with Masked (Chromakey) the option of Alpha blend also works!
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