xrCreateInstance XR_ERROR_RUNTIME_FAILURE, with Pico 4 and SteamVR runtime

OpenXR
1

Hello,
I have a Unity (2022.3.4f1) project with the OpenXR plugin (1.8.1). I use SteamVR as the runtime (1.26.7) and a Pico connected with a usb link cable. Most of the time when I start the project it fails when creating the XrInstance, when trying to create the subsystem for the OpenXR Display, causing Unity to hang. I get the error:

xrCreateInstance: XR_ERROR_RUNTIME_FAILURE

Here is the full Open XR diagnostic report:

==== Start Unity OpenXR Diagnostic Report ====


[XR] [16312] [16:28:44.922][Info   ] ==== Report Reason: System Shutdown ====


[XR] [16312] [16:28:44.922][Info   ] ==== OpenXR Init Info ====
[XR] [16312] [16:28:44.922][Info   ] 
[XR] [16312] [16:28:44.922][Info   ] Stage 1 Missing Entry Points: (1)
[XR] [16312] [16:28:44.922][Info   ]   xrInitializeLoaderKHR
[XR] [16312] [16:28:44.922][Info   ] 
[XR] [16312] [16:28:44.922][Info   ] ==== OpenXR Provider Info ====
[XR] [16312] [16:28:44.922][Info   ] 
[XR] [16312] [16:28:44.922][Info   ] Spec Version: 1.0.27
[XR] [16312] [16:28:44.922][Info   ] Provider Version: 1.8.2
[XR] [16312] [16:28:44.922][Info   ] App: DisplaysUnity #3118937138
[XR] [16312] [16:28:44.922][Info   ] Engine: 2022.3.4f1 #53494785
[XR] [16312] [16:28:44.922][Info   ] 
[XR] [16312] [16:28:44.922][Info   ] ==== OpenXR Runtime Info ====
[XR] [16312] [16:28:44.923][Info   ] 
[XR] [16312] [16:28:44.923][Info   ] Features requested to be enabled: (9)
[XR] [16312] [16:28:44.923][Info   ]   HP Reverb G2 Controller Profile: Version=0.0.1, Company="Unity", Extensions="XR_EXT_hp_mixed_reality_controller"
[XR] [16312] [16:28:44.923][Info   ]   HTC Vive Controller Profile: Version=0.0.1, Company="Unity"
[XR] [16312] [16:28:44.923][Info   ]   Khronos Simple Controller Profile: Version=0.0.1, Company="Unity"
[XR] [16312] [16:28:44.923][Info   ]   Microsoft Hand Interaction Profile: Version=0.0.1, Company="Unity", Extensions="XR_MSFT_hand_interaction"
[XR] [16312] [16:28:44.923][Info   ]   Microsoft Motion Controller Profile: Version=0.0.1, Company="Unity"
[XR] [16312] [16:28:44.923][Info   ]   Oculus Touch Controller Profile: Version=0.0.1, Company="Unity"
[XR] [16312] [16:28:44.923][Info   ]   Valve Index Controller Profile: Version=0.0.1, Company="Unity"
[XR] [16312] [16:28:44.923][Info   ] 
[XR] [16312] [16:28:44.923][Info   ] Requested feature extensions not supported by runtime: (1)
[XR] [16312] [16:28:44.923][Info   ]   XR_MSFT_hand_interaction: Feature="Microsoft Hand Interaction Profile": Version=0.0.1, Company="Unity"
[XR] [16312] [16:28:44.923][Info   ] 
[XR] [16312] [16:28:44.923][Info   ] Available Runtime Extensions: (25)
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_vulkan_enable: Version=8
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_vulkan_enable2: Version=2
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_D3D11_enable: Version=9
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_D3D12_enable: Version=9
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_opengl_enable: Version=10
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_win32_convert_performance_counter_time: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_win32_appcontainer_compatible: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_binding_modification: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_composition_layer_depth: Version=6
[XR] [16312] [16:28:44.923][Info   ]   XR_KHR_visibility_mask: Version=2
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_active_action_set_priority: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_dpad_binding: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_frame_composition_report: Version=4
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_hand_tracking: Version=4
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_hand_joints_motion_range: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_hp_mixed_reality_controller: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_palm_pose: Version=2
[XR] [16312] [16:28:44.923][Info   ]   XR_FB_display_refresh_rate: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_HTC_vive_cosmos_controller_interaction: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_HTC_vive_focus3_controller_interaction: Version=2
[XR] [16312] [16:28:44.923][Info   ]   XR_HTC_vive_wrist_tracker_interaction: Version=1
[XR] [16312] [16:28:44.923][Info   ]   XR_MND_headless: Version=2
[XR] [16312] [16:28:44.923][Info   ]   XR_VALVE_analog_threshold: Version=2
[XR] [16312] [16:28:44.923][Info   ]   XR_HTCX_vive_tracker_interaction: Version=2
[XR] [16312] [16:28:44.923][Info   ]   XR_EXT_debug_utils: Version=4
[XR] [16312] [16:28:44.923][Info   ] 
[XR] [16312] [16:28:44.923][Info   ] Available Layers: (0)
[XR] [16312] [16:28:44.923][Info   ] 
[XR] [16312] [16:28:44.923][Info   ] ==== Last 20 non-XR_SUCCESS returns ====
[XR] [16312] [16:28:44.923][Info   ] [FAILURE] xrCreateInstance: XR_ERROR_RUNTIME_FAILURE (1x)
[XR] [16312] [16:28:44.923][Info   ] 
[XR] [16312] [16:28:44.923][Info   ] ==== Last 20 Events ====
[XR] [16312] [16:28:44.923][Info   ] 

==== End Unity OpenXR Diagnostic Report ====

I tried to use the OpenXR explorer, which also couldn’t get the XrInstance, so I imagine something goes wrong with SteamVR. I tried to reinstall it several times. Sometimes it works, with the same SteamVR version. On another PC it is the same, but on another one it works all the time. I am getting out of ideas of what can cause this. Any idea?

2

So it seems to work when Steam (not only SteamVR) is launched before the Pico Streaming Assistant. On the contrary, it fails if the Streaming Assistant launches SteamVR automatically while Steam was not open. If anyone else gets this error :slight_smile:

3

Hmm, strange. I would have guessed that it has something to do with XR_MSFT_hand_interaction since it says requested extensions not supported, and it didn’t make it clear that this is an optional extension. Might just be poor wording of the debug log in Unity, though.

4

This just means Unity wanted this extension, but it was denied because not supported. And the error would’ve been XR_ERROR_EXTENSION_NOT_PRESENT anyway I think.

5

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