Simple demo for Mobile VR Interface

xr/mobile_vr_interface_demo/.editorconfig

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+root = true
+
+[*]
+charset = utf-8

xr/mobile_vr_interface_demo/README.md

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+# Mobile VR interfae demo
+
+This is a really simple demo that shows how the mobile VR interface can be enabled.
+This is a great little project to test stereo rendering on desktop without needing XR hardware.
+When used on mobile devices simple 3DOF headtracking can be tested.
+
+Language: GDScript
+
+Renderer: Compatibility, Mobile, Forward+
+
+Check out this demo on the asset library: https://godotengine.org/asset-library/asset/0000
+
+## How does it work?
+
+This sample shows the simplest form for enabling and testing an XR application.
+It uses the build in Mobile VR Interface.
+
+There is simple left/right/up/down movement on desktop.
+
+## Shortcomings
+
+Note that currently lens distortion in the mobile VR interface is **not** supported in the compatibility renderer.
+
+## Screenshots
+
+![Screenshot](screenshots/mobile_vr_interface_demo.png)

xr/mobile_vr_interface_demo/icon.svg

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xr/mobile_vr_interface_demo/icon.svg.import

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xr/mobile_vr_interface_demo/main.gd

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+extends Node3D
+
+var xr_interface : MobileVRInterface
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	xr_interface = XRServer.find_interface("Native mobile")
+	if xr_interface and xr_interface.initialize():
+		# Disable lens distortion.
+		# xr_interface.k1 = 0.0
+		# xr_interface.k2 = 0.0
+
+		# setup viewport
+		var vp = get_viewport()
+		vp.use_xr = true
+		vp.vrs_mode = Viewport.VRS_XR
+	else:
+		# How did we get here?
+		get_tree().quit()
+
+func _process(delta):
+	var dir : Vector2 = Vector2()
+
+	if Input.is_action_pressed("ui_left"):
+		dir.x = -1.0
+	elif Input.is_action_pressed("ui_right"):
+		dir.x = 1.0
+	if Input.is_action_pressed("ui_up"):
+		dir.y = -1.0
+	elif Input.is_action_pressed("ui_down"):
+		dir.y = 1.0
+
+	$XROrigin3D.global_position += $XROrigin3D.global_transform.basis.x * dir.x * delta
+	$XROrigin3D.global_position += $XROrigin3D.global_transform.basis.z * dir.y * delta

xr/mobile_vr_interface_demo/main.gd.uid

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xr/mobile_vr_interface_demo/main.tscn

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+[ext_resource type="Texture2D" uid="uid://br4k6sn2rvgj" path="res://pattern.png" id="2_imhd6"]
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+[sub_resource type="ProceduralSkyMaterial" id="ProceduralSkyMaterial_beswd"]
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+[sub_resource type="Sky" id="Sky_uvncs"]
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+[sub_resource type="Environment" id="Environment_rgp66"]
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+glow_enabled = true
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+[sub_resource type="PlaneMesh" id="PlaneMesh_y2phs"]
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+[sub_resource type="BoxMesh" id="BoxMesh_1vrbc"]
+material = SubResource("StandardMaterial3D_a1cqg")
+size = Vector3(4, 3, 1)
+
+[node name="Main" type="Node3D"]
+script = ExtResource("1_1u602")
+
+[node name="DirectionalLight3D" type="DirectionalLight3D" parent="."]
+transform = Transform3D(-0.86602384, -0.43301564, 0.2500005, 0, 0.49999815, 0.8660265, -0.50000286, 0.7499995, -0.4330103, 0, 0, 0)
+shadow_enabled = true
+
+[node name="WorldEnvironment" type="WorldEnvironment" parent="."]
+environment = SubResource("Environment_rgp66")
+
+[node name="XROrigin3D" type="XROrigin3D" parent="."]
+
+[node name="XRCamera3D" type="XRCamera3D" parent="XROrigin3D"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.5, 0)
+
+[node name="Floor" type="MeshInstance3D" parent="."]
+mesh = SubResource("PlaneMesh_y2phs")
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+[node name="Wall01" type="MeshInstance3D" parent="."]
+transform = Transform3D(0.968213, -0.250127, 0, 0.250127, 0.968213, 0, 0, 0, 1, 0, 0.82946, -6.87257)
+mesh = SubResource("BoxMesh_1vrbc")
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+[node name="Wall02" type="MeshInstance3D" parent="."]
+transform = Transform3D(0.674941, 0.180131, 0.715546, -0.257858, 0.966183, 0, -0.691348, -0.184509, 0.698565, -3.04544, 0.82946, -5.53616)
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+[node name="Wall04" type="MeshInstance3D" parent="."]
+transform = Transform3D(0.491527, 0, -0.870862, 0, 2.43615, 0, 0.870862, 0, 0.491527, 2.68331, 2.52217, -4.7792)
+mesh = SubResource("BoxMesh_1vrbc")
+
+[node name="Wall05" parent="." instance=ExtResource("4_fdaxx")]
+transform = Transform3D(0.941075, 0.0774667, 0.112959, -0.0781437, -0.275157, 0.295486, 0.329045, -0.286902, -0.25289, 2.33372, 3.46393, -10.7686)

xr/mobile_vr_interface_demo/pattern.png.import

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xr/mobile_vr_interface_demo/project.godot

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+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=5
+
+[application]
+
+config/name="Test Stereo"
+run/main_scene="res://main.tscn"
+config/features=PackedStringArray("4.5", "Forward Plus")
+config/icon="res://icon.svg"
+run/main_scene.mobile="res://main_mobile.tscn"
+
+[rendering]
+
+renderer/rendering_method="gl_compatibility"
+renderer/rendering_method.mobile="gl_compatibility"
+
+[xr]
+
+openxr/foveation_level=3
+openxr/foveation_dynamic=true
+shaders/enabled=true

xr/mobile_vr_interface_demo/screenshots/mobile_vr_interface_demo.png.import

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xr/mobile_vr_interface_demo/wall.tscn

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+[gd_scene load_steps=4 format=3 uid="uid://8m50ra15rpq1"]
+
+[ext_resource type="Texture2D" uid="uid://br4k6sn2rvgj" path="res://pattern.png" id="1_eektq"]
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+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_a1cqg"]
+albedo_color = Color(0.713726, 0.545098, 0.780392, 1)
+albedo_texture = ExtResource("1_eektq")
+uv1_scale = Vector3(8, 2, 1)
+
+[sub_resource type="BoxMesh" id="BoxMesh_1vrbc"]
+material = SubResource("StandardMaterial3D_a1cqg")
+size = Vector3(4, 3, 1)
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+[node name="Wall" type="Node3D"]
+transform = Transform3D(1, 0, 0, 0, 0.405, 0, 0, 0, 0.405, 0, 0, 0)
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+[node name="Wall03" type="MeshInstance3D" parent="."]
+transform = Transform3D(2.472, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.83988, 0)
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+skeleton = NodePath("../..")