Visor lifecycle

Visor Play Modes

Visor supports 3 play modes. Each mode controls whether the VR session is initialized and when VR is rendered

VR_ENABLED (default)

• Behavior
  • VR session is initialized on startup, and is playable from main menu
  • Require VR runtime & hardware

VR_WORLD_ONLY

• Behavior
  • VR session is initialized same as VR_ENABLED, but is playable only in world
  • Require VR runtime & hardware

VR_DISABLED

• Behavior
  • VR session never ininitialize
  • Does not require VR runtime & hardware
  • Modifies only rendering of remote VR players (if connected to server supporting Visor through mod or plugin)

VR Lifecycle

Three Boolean flags control runtime behavior:

Flag	true means…	false means…
VR_INITIALIZED	VR session has been successfully created and is ready for rendering	No VR session is available; VR cannot render
VR_ACTIVE	VR is rendering	Rendering falls back to vanilla
VR_FOCUSED	VR is fully functional	In-game menu overlay is shown and non-essential VR visuals are disabled to save performance.

Runtime

State is updated at the beginning of mc game loop

1. Initialization

   • On startup, after mc resources are loaded (unless in VR_DISABLED play mode), attempt to initialize VR.
   • If successful, set VR_INITIALIZED = true.
   • On failure, changed Play Mode to DISABLED

2. Activation

   • When VR_INITIALIZED == true and HMD has been put on, set VR_ACTIVE = true.
   • If HMD has been taken off while on server not supporting vanilla, the VR_ACTIVE stays true
   • If in VR_WORLD_ONLY play mode, set VR_ACTIVE = true only in world

3. Focus

   • While VR_ACTIVE == true, monitor for system/menu overlays.
   • If the user opens any non-game UI (pause menu, Steam overlay, etc.), set VR_FOCUSED = false.
   • When the game view regains focus, set VR_FOCUSED = true.

4. If VR has thrown an error

   • If the player is in-world, leaves it
   • VR session is destroyed, set VR_INITIALIZED = false
   • VR Play Mode changes to DISABLED
   • Shows VR error screen