OpenXRInterface

Inherits: XRInterface < RefCounted < Object

Our OpenXR interface.

Description

The OpenXR interface allows Godot to interact with OpenXR runtimes and make it possible to create XR experiences and games.

Due to the needs of OpenXR this interface works slightly different than other plugin based XR interfaces. It needs to be initialized when Godot starts. You need to enable OpenXR, settings for this can be found in your games project settings under the XR heading. You do need to mark a viewport for use with XR in order for Godot to know which render result should be output to the headset.

Tutorials

• Setting up XR

Properties

Methods

Signals

instance_exiting() 🔗

Informs our OpenXR instance is exiting.

pose_recentered() 🔗

Informs the user queued a recenter of the player position.

refresh_rate_changed(refresh_rate: float) 🔗

Informs the user the HMD refresh rate has changed.

Note: Only emitted if XR runtime supports the refresh rate extension.

session_begun() 🔗

Informs our OpenXR session has been started.

session_focussed() 🔗

Informs our OpenXR session now has focus.

session_loss_pending() 🔗

Informs our OpenXR session is in the process of being lost.

session_stopping() 🔗

Informs our OpenXR session is stopping.

session_visible() 🔗

Informs our OpenXR session is now visible (output is being sent to the HMD).

Enumerations

enum Hand: 🔗

Hand HAND_LEFT = 0

Left hand.

Hand HAND_RIGHT = 1

Right hand.

Hand HAND_MAX = 2

Maximum value for the hand enum.

enum HandMotionRange: 🔗

HandMotionRange HAND_MOTION_RANGE_UNOBSTRUCTED = 0

Full hand range, if user closes their hands, we make a full fist.

HandMotionRange HAND_MOTION_RANGE_CONFORM_TO_CONTROLLER = 1

Conform to controller, if user closes their hands, the tracked data conforms to the shape of the controller.

HandMotionRange HAND_MOTION_RANGE_MAX = 2

Maximum value for the motion range enum.

enum HandTrackedSource: 🔗

HandTrackedSource HAND_TRACKED_SOURCE_UNKNOWN = 0

The source of hand tracking data is unknown (the extension is likely unsupported).

HandTrackedSource HAND_TRACKED_SOURCE_UNOBSTRUCTED = 1

The source of hand tracking is unobstructed, this means that an accurate method of hand tracking is used, e.g. optical hand tracking, data gloves, etc.

HandTrackedSource HAND_TRACKED_SOURCE_CONTROLLER = 2

The source of hand tracking is a controller, bone positions are inferred from controller inputs.

HandTrackedSource HAND_TRACKED_SOURCE_MAX = 3

Maximum value for the hand tracked source enum.

enum HandJoints: 🔗

HandJoints HAND_JOINT_PALM = 0

Palm joint.

HandJoints HAND_JOINT_WRIST = 1

Wrist joint.

HandJoints HAND_JOINT_THUMB_METACARPAL = 2

Thumb metacarpal joint.

HandJoints HAND_JOINT_THUMB_PROXIMAL = 3

Thumb proximal joint.

HandJoints HAND_JOINT_THUMB_DISTAL = 4

Thumb distal joint.

HandJoints HAND_JOINT_THUMB_TIP = 5

Thumb tip joint.

HandJoints HAND_JOINT_INDEX_METACARPAL = 6

Index metacarpal joint.

HandJoints HAND_JOINT_INDEX_PROXIMAL = 7

Index proximal joint.

HandJoints HAND_JOINT_INDEX_INTERMEDIATE = 8

Index intermediate joint.

HandJoints HAND_JOINT_INDEX_DISTAL = 9

Index distal joint.

HandJoints HAND_JOINT_INDEX_TIP = 10

Index tip joint.

HandJoints HAND_JOINT_MIDDLE_METACARPAL = 11

Middle metacarpal joint.

HandJoints HAND_JOINT_MIDDLE_PROXIMAL = 12

Middle proximal joint.

HandJoints HAND_JOINT_MIDDLE_INTERMEDIATE = 13

Middle intermediate joint.

HandJoints HAND_JOINT_MIDDLE_DISTAL = 14

Middle distal joint.

HandJoints HAND_JOINT_MIDDLE_TIP = 15

Middle tip joint.

HandJoints HAND_JOINT_RING_METACARPAL = 16

Ring metacarpal joint.

HandJoints HAND_JOINT_RING_PROXIMAL = 17

Ring proximal joint.

HandJoints HAND_JOINT_RING_INTERMEDIATE = 18

Ring intermediate joint.

HandJoints HAND_JOINT_RING_DISTAL = 19

Ring distal joint.

HandJoints HAND_JOINT_RING_TIP = 20

Ring tip joint.

HandJoints HAND_JOINT_LITTLE_METACARPAL = 21

Little metacarpal joint.

HandJoints HAND_JOINT_LITTLE_PROXIMAL = 22

Little proximal joint.

HandJoints HAND_JOINT_LITTLE_INTERMEDIATE = 23

Little intermediate joint.

HandJoints HAND_JOINT_LITTLE_DISTAL = 24

Little distal joint.

HandJoints HAND_JOINT_LITTLE_TIP = 25

Little tip joint.

HandJoints HAND_JOINT_MAX = 26

Maximum value for the hand joint enum.

flags HandJointFlags: 🔗

HandJointFlags HAND_JOINT_NONE = 0

No flags are set.

HandJointFlags HAND_JOINT_ORIENTATION_VALID = 1

If set, the orientation data is valid, otherwise, the orientation data is unreliable and should not be used.

HandJointFlags HAND_JOINT_ORIENTATION_TRACKED = 2

If set, the orientation data comes from tracking data, otherwise, the orientation data contains predicted data.

HandJointFlags HAND_JOINT_POSITION_VALID = 4

If set, the positional data is valid, otherwise, the positional data is unreliable and should not be used.

HandJointFlags HAND_JOINT_POSITION_TRACKED = 8

If set, the positional data comes from tracking data, otherwise, the positional data contains predicted data.

HandJointFlags HAND_JOINT_LINEAR_VELOCITY_VALID = 16

If set, our linear velocity data is valid, otherwise, the linear velocity data is unreliable and should not be used.

HandJointFlags HAND_JOINT_ANGULAR_VELOCITY_VALID = 32

If set, our angular velocity data is valid, otherwise, the angular velocity data is unreliable and should not be used.

Property Descriptions

float display_refresh_rate = 0.0 🔗

• void set_display_refresh_rate(value: float)

• float get_display_refresh_rate()

The display refresh rate for the current HMD. Only functional if this feature is supported by the OpenXR runtime and after the interface has been initialized.

bool foveation_dynamic = false 🔗

• void set_foveation_dynamic(value: bool)

• bool get_foveation_dynamic()

Enable dynamic foveation adjustment, the interface must be initialized before this is accessible. If enabled foveation will automatically adjusted between low and foveation_level.

Note: Only works on compatibility renderer.

int foveation_level = 0 🔗

• void set_foveation_level(value: int)

• int get_foveation_level()

Set foveation level from 0 (off) to 3 (high), the interface must be initialized before this is accessible.

Note: Only works on compatibility renderer.

float render_target_size_multiplier = 1.0 🔗

• void set_render_target_size_multiplier(value: float)

• float get_render_target_size_multiplier()

The render size multiplier for the current HMD. Must be set before the interface has been initialized.

float vrs_min_radius = 20.0 🔗

• void set_vrs_min_radius(value: float)

• float get_vrs_min_radius()

The minimum radius around the focal point where full quality is guaranteed if VRS is used as a percentage of screen size.

Note: Mobile and Forward+ renderers only. Requires Viewport.vrs_mode to be set to Viewport.VRS_XR.

float vrs_strength = 1.0 🔗

• void set_vrs_strength(value: float)

• float get_vrs_strength()

The strength used to calculate the VRS density map. The greater this value, the more noticeable VRS is. This improves performance at the cost of quality.

Note: Mobile and Forward+ renderers only. Requires Viewport.vrs_mode to be set to Viewport.VRS_XR.

Method Descriptions

Array get_action_sets() const 🔗

Returns a list of action sets registered with Godot (loaded from the action map at runtime).

Array get_available_display_refresh_rates() const 🔗

Returns display refresh rates supported by the current HMD. Only returned if this feature is supported by the OpenXR runtime and after the interface has been initialized.

Vector3 get_hand_joint_angular_velocity(hand: Hand, joint: HandJoints) const 🔗

Deprecated: Use XRHandTracker.get_hand_joint_angular_velocity obtained from XRServer.get_tracker instead.

If handtracking is enabled, returns the angular velocity of a joint (joint) of a hand (hand) as provided by OpenXR. This is relative to XROrigin3D!

BitField[HandJointFlags] get_hand_joint_flags(hand: Hand, joint: HandJoints) const 🔗

Deprecated: Use XRHandTracker.get_hand_joint_flags obtained from XRServer.get_tracker instead.

If handtracking is enabled, returns flags that inform us of the validity of the tracking data.

Vector3 get_hand_joint_linear_velocity(hand: Hand, joint: HandJoints) const 🔗

Deprecated: Use XRHandTracker.get_hand_joint_linear_velocity obtained from XRServer.get_tracker instead.

If handtracking is enabled, returns the linear velocity of a joint (joint) of a hand (hand) as provided by OpenXR. This is relative to XROrigin3D without worldscale applied!

Vector3 get_hand_joint_position(hand: Hand, joint: HandJoints) const 🔗

Deprecated: Use XRHandTracker.get_hand_joint_transform obtained from XRServer.get_tracker instead.

If handtracking is enabled, returns the position of a joint (joint) of a hand (hand) as provided by OpenXR. This is relative to XROrigin3D without worldscale applied!

float get_hand_joint_radius(hand: Hand, joint: HandJoints) const 🔗

Deprecated: Use XRHandTracker.get_hand_joint_radius obtained from XRServer.get_tracker instead.

If handtracking is enabled, returns the radius of a joint (joint) of a hand (hand) as provided by OpenXR. This is without worldscale applied!

Quaternion get_hand_joint_rotation(hand: Hand, joint: HandJoints) const 🔗

Deprecated: Use XRHandTracker.get_hand_joint_transform obtained from XRServer.get_tracker instead.

If handtracking is enabled, returns the rotation of a joint (joint) of a hand (hand) as provided by OpenXR.

HandTrackedSource get_hand_tracking_source(hand: Hand) const 🔗

Deprecated: Use XRHandTracker.hand_tracking_source obtained from XRServer.get_tracker instead.

If handtracking is enabled and hand tracking source is supported, gets the source of the hand tracking data for hand.

HandMotionRange get_motion_range(hand: Hand) const 🔗

If handtracking is enabled and motion range is supported, gets the currently configured motion range for hand.

bool is_action_set_active(name: String) const 🔗

Returns true if the given action set is active.

bool is_eye_gaze_interaction_supported() 🔗

Returns the capabilities of the eye gaze interaction extension.

Note: This only returns a valid value after OpenXR has been initialized.

bool is_foveation_supported() const 🔗

Returns true if OpenXR’s foveation extension is supported, the interface must be initialized before this returns a valid value.

Note: This feature is only available on the compatibility renderer and currently only available on some stand alone headsets. For Vulkan set Viewport.vrs_mode to VRS_XR on desktop.

bool is_hand_interaction_supported() const 🔗

Returns true if OpenXR’s hand interaction profile is supported and enabled.

Note: This only returns a valid value after OpenXR has been initialized.

bool is_hand_tracking_supported() 🔗

Returns true if OpenXR’s hand tracking is supported and enabled.

Note: This only returns a valid value after OpenXR has been initialized.

void set_action_set_active(name: String, active: bool) 🔗

Sets the given action set as active or inactive.

void set_motion_range(hand: Hand, motion_range: HandMotionRange) 🔗

If handtracking is enabled and motion range is supported, sets the currently configured motion range for hand to motion_range.

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