### Initialize AR/VR Plugin and Viewport

Source: https://github.com/godotvr/godot-xr-tools/wiki/Home

This code snippet demonstrates how to initialize an AR/VR plugin and configure the main viewport for XR rendering. It also shows how to disable v-sync and synchronize physics with the frame rate.

```gdscript
func _ready():
	var interface = ARVRServer.find_interface("name of the plugin")
	if interface and interface.initialize():
		# turn the main viewport into an ARVR viewport:
		get_viewport().arvr = true

		# turn off v-sync
		OS.vsync_enabled = false

		# put our physics in sync with our expected frame rate:
		Engine.iterations_per_second= 90
```

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