Playing Godot Beep Saber VR on a Talos II (using the Valve Index)

I ported the Godot Beep Saber VR game (originally written using the Godot Oculus Quest Toolkit) to Godot 4.1 and OpenXR. This took several month, now I can play it on my Valve Index (using libsurvive since SteamVR is nonfree and x86 only). The game contains many bugs as shown in the video, after fixing those bugs I will as V-Sekai VRM and SlimeVR support.