Valve has released SteamVR 2.19.3 and SteamOS 0.5.9 for Steam Frame, introducing new mixed-reality features and technical refinements for headset users.
These updates, currently available through the beta channel, build upon the Room View passthrough capabilities introduced in previous November builds, according to GamingOnLinux.
The update adds chroma key support for Room View while streaming PC content, allowing users to blend their physical surroundings with virtual environments. To utilize this feature, users must opt into the beta branch for both their Steam Frame headset and the SteamVR software on their host PC, as noted by TwistedVoxel.
Chroma Key Settings Enable Integrated Mixed-Reality Experiences
The new chroma key settings, located in the PC-side Camera section, provide two distinct modes: Protect Content and Key Content. The latter allows games to define a specific key color to manage Room View transparency, enabling a more integrated mixed-reality experience. Valve highlighted X-Plane 12 as an example of a title that can leverage these blended frames, provided the game is updated to version 12.4.3 or later, vr.org reported.
“Support for Mixed Reality on supported devices.” is what Laminar Research's 12.4.3 release notes list, vr.org reported.
Streaming performance also sees adjustments with the addition of foveated sharpening during Steam Link sessions. For Linux users, the update addresses several rendering issues, including right-eye flickering and scene distortion on the Valve Index and HTC Vive that previously occurred when the dashboard was active, GamingOnLinux stated. SteamVR 2.19.3 now utilizes full resolution for mirror windows and third-party recording applications, correcting previous instances where these tools defaulted to low resolution.
Prism Correction Settings Assist Users with Double Vision
Valve has introduced accessibility settings for prism correction to assist users experiencing diplopia, or double vision. These settings can be toggled within the Advanced Settings menu under General, though the headset must be restarted for the changes to take effect, according to TwistedVoxel.
The update also resolves specific technical conflicts. WebXR support in Chrome and Chromium is now functional for users who installed the browsers via Discover as user applications. Valve linked the performance overlay toggles, ensuring that disabling the primary VR performance display also deactivates the developer overlay. These changes address system lock-ups previously caused by certain applications, such as VLC, NeoTeo reported.
Enable the Beta Channel to Access New Features
To access these features, users must enable the beta channel on their Steam Frame headset via the System Update settings. On a PC, users must right-click SteamVR in their library, select Properties, then go to Game Versions & Beta to choose the beta branch.
SteamOS 0.5.8, released on November 6, first introduced the Room View passthrough for PC streaming. The 0.5.9 update builds on this foundation by adding the chroma key support, foveated sharpening, and the prism correction accessibility settings. Valve characterizes these features as still undergoing testing.
Steam Files Reside in Different Directories by Operating System
The standard installation path for Steam files varies by operating system. On a default Windows install, the files reside under the Steam folder in Program Files (x86), whereas on Linux, the directory is located within the hidden .steam or .local/share/Steam folders.
For those troubleshooting connection issues with the headset, developers may utilize specialized diagnostic scripts, such as a Python-based probe, to monitor frame loss, jitter, and packet transmission statistics.
Regarding the headset’s physical passthrough capabilities, users should note that the built-in view is monochrome. Color passthrough requires the $149 Arcturus Vision camera, an add-on peripheral that Jordan Kuo documented at the time of the headset’s launch, when Valve’s initial documentation lacked references to the feature.
For users encountering tracking errors, system logs may indicate light-level issues or reflective surface interference, which can often be resolved by clearing the area and restarting the device.