godot-docs/classes/class_xrinterfaceextension.rst

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.. _class_XRInterfaceExtension:

XRInterfaceExtension
====================

**Inherits:** :ref:`XRInterface<class_XRInterface>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`

Base class for XR interface extensions (plugins).

.. rst-class:: classref-introduction-group

Description
-----------

External XR interface plugins should inherit from this class.

.. rst-class:: classref-reftable-group

Methods
-------

.. table::
   :widths: auto

   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                   | :ref:`_end_frame<class_XRInterfaceExtension_method__end_frame>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                                 |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                | :ref:`_get_anchor_detection_is_enabled<class_XRInterfaceExtension_method__get_anchor_detection_is_enabled>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                             |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                  | :ref:`_get_camera_feed_id<class_XRInterfaceExtension_method__get_camera_feed_id>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                                       |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Transform3D<class_Transform3D>`                  | :ref:`_get_camera_transform<class_XRInterfaceExtension_method__get_camera_transform>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                           |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                  | :ref:`_get_capabilities<class_XRInterfaceExtension_method__get_capabilities>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                                           |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`                                  | :ref:`_get_color_texture<class_XRInterfaceExtension_method__get_color_texture>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                 |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`                                  | :ref:`_get_depth_texture<class_XRInterfaceExtension_method__get_depth_texture>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                 |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`StringName<class_StringName>`                    | :ref:`_get_name<class_XRInterfaceExtension_method__get_name>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                                                           |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PackedVector3Array<class_PackedVector3Array>`    | :ref:`_get_play_area<class_XRInterfaceExtension_method__get_play_area>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                                                 |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PlayAreaMode<enum_XRInterface_PlayAreaMode>`     | :ref:`_get_play_area_mode<class_XRInterfaceExtension_method__get_play_area_mode>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                                       |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PackedFloat64Array<class_PackedFloat64Array>`    | :ref:`_get_projection_for_view<class_XRInterfaceExtension_method__get_projection_for_view>` **(** :ref:`int<class_int>` view, :ref:`float<class_float>` aspect, :ref:`float<class_float>` z_near, :ref:`float<class_float>` z_far **)** |virtual|                                                                                                                                                                                                                                     |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Vector2<class_Vector2>`                          | :ref:`_get_render_target_size<class_XRInterfaceExtension_method__get_render_target_size>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                       |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PackedStringArray<class_PackedStringArray>`      | :ref:`_get_suggested_pose_names<class_XRInterfaceExtension_method__get_suggested_pose_names>` **(** :ref:`StringName<class_StringName>` tracker_name **)** |virtual| |const|                                                                                                                                                                                                                                                                                                          |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PackedStringArray<class_PackedStringArray>`      | :ref:`_get_suggested_tracker_names<class_XRInterfaceExtension_method__get_suggested_tracker_names>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                     |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>`                    | :ref:`_get_system_info<class_XRInterfaceExtension_method__get_system_info>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                                             |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`TrackingStatus<enum_XRInterface_TrackingStatus>` | :ref:`_get_tracking_status<class_XRInterfaceExtension_method__get_tracking_status>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                                     |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Transform3D<class_Transform3D>`                  | :ref:`_get_transform_for_view<class_XRInterfaceExtension_method__get_transform_for_view>` **(** :ref:`int<class_int>` view, :ref:`Transform3D<class_Transform3D>` cam_transform **)** |virtual|                                                                                                                                                                                                                                                                                       |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`                                  | :ref:`_get_velocity_texture<class_XRInterfaceExtension_method__get_velocity_texture>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                           |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                  | :ref:`_get_view_count<class_XRInterfaceExtension_method__get_view_count>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                       |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`                                  | :ref:`_get_vrs_texture<class_XRInterfaceExtension_method__get_vrs_texture>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                     |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                | :ref:`_initialize<class_XRInterfaceExtension_method__initialize>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                               |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                | :ref:`_is_initialized<class_XRInterfaceExtension_method__is_initialized>` **(** **)** |virtual| |const|                                                                                                                                                                                                                                                                                                                                                                               |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                   | :ref:`_post_draw_viewport<class_XRInterfaceExtension_method__post_draw_viewport>` **(** :ref:`RID<class_RID>` render_target, :ref:`Rect2<class_Rect2>` screen_rect **)** |virtual|                                                                                                                                                                                                                                                                                                    |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                | :ref:`_pre_draw_viewport<class_XRInterfaceExtension_method__pre_draw_viewport>` **(** :ref:`RID<class_RID>` render_target **)** |virtual|                                                                                                                                                                                                                                                                                                                                             |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                   | :ref:`_pre_render<class_XRInterfaceExtension_method__pre_render>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                               |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                   | :ref:`_process<class_XRInterfaceExtension_method__process>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                                     |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                   | :ref:`_set_anchor_detection_is_enabled<class_XRInterfaceExtension_method__set_anchor_detection_is_enabled>` **(** :ref:`bool<class_bool>` enabled **)** |virtual|                                                                                                                                                                                                                                                                                                                     |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                | :ref:`_set_play_area_mode<class_XRInterfaceExtension_method__set_play_area_mode>` **(** :ref:`PlayAreaMode<enum_XRInterface_PlayAreaMode>` mode **)** |virtual| |const|                                                                                                                                                                                                                                                                                                               |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                | :ref:`_supports_play_area_mode<class_XRInterfaceExtension_method__supports_play_area_mode>` **(** :ref:`PlayAreaMode<enum_XRInterface_PlayAreaMode>` mode **)** |virtual| |const|                                                                                                                                                                                                                                                                                                     |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                   | :ref:`_trigger_haptic_pulse<class_XRInterfaceExtension_method__trigger_haptic_pulse>` **(** :ref:`String<class_String>` action_name, :ref:`StringName<class_StringName>` tracker_name, :ref:`float<class_float>` frequency, :ref:`float<class_float>` amplitude, :ref:`float<class_float>` duration_sec, :ref:`float<class_float>` delay_sec **)** |virtual|                                                                                                                          |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                   | :ref:`_uninitialize<class_XRInterfaceExtension_method__uninitialize>` **(** **)** |virtual|                                                                                                                                                                                                                                                                                                                                                                                           |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | void                                                   | :ref:`add_blit<class_XRInterfaceExtension_method_add_blit>` **(** :ref:`RID<class_RID>` render_target, :ref:`Rect2<class_Rect2>` src_rect, :ref:`Rect2i<class_Rect2i>` dst_rect, :ref:`bool<class_bool>` use_layer, :ref:`int<class_int>` layer, :ref:`bool<class_bool>` apply_lens_distortion, :ref:`Vector2<class_Vector2>` eye_center, :ref:`float<class_float>` k1, :ref:`float<class_float>` k2, :ref:`float<class_float>` upscale, :ref:`float<class_float>` aspect_ratio **)** |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`                                  | :ref:`get_color_texture<class_XRInterfaceExtension_method_get_color_texture>` **(** **)**                                                                                                                                                                                                                                                                                                                                                                                             |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`                                  | :ref:`get_depth_texture<class_XRInterfaceExtension_method_get_depth_texture>` **(** **)**                                                                                                                                                                                                                                                                                                                                                                                             |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`                                  | :ref:`get_render_target_texture<class_XRInterfaceExtension_method_get_render_target_texture>` **(** :ref:`RID<class_RID>` render_target **)**                                                                                                                                                                                                                                                                                                                                         |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`RID<class_RID>`                                  | :ref:`get_velocity_texture<class_XRInterfaceExtension_method_get_velocity_texture>` **(** **)**                                                                                                                                                                                                                                                                                                                                                                                       |
   +--------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

Method Descriptions
-------------------

.. _class_XRInterfaceExtension_method__end_frame:

.. rst-class:: classref-method

void **_end_frame** **(** **)** |virtual|

Called if interface is active and queues have been submitted.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_anchor_detection_is_enabled:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **_get_anchor_detection_is_enabled** **(** **)** |virtual| |const|

Return ``true`` if anchor detection is enabled for this interface.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_camera_feed_id:

.. rst-class:: classref-method

:ref:`int<class_int>` **_get_camera_feed_id** **(** **)** |virtual| |const|

Returns the camera feed ID for the :ref:`CameraFeed<class_CameraFeed>` registered with the :ref:`CameraServer<class_CameraServer>` that should be presented as the background on an AR capable device (if applicable).

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_camera_transform:

.. rst-class:: classref-method

:ref:`Transform3D<class_Transform3D>` **_get_camera_transform** **(** **)** |virtual|

Returns the :ref:`Transform3D<class_Transform3D>` that positions the :ref:`XRCamera3D<class_XRCamera3D>` in the world.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_capabilities:

.. rst-class:: classref-method

:ref:`int<class_int>` **_get_capabilities** **(** **)** |virtual| |const|

Returns the capabilities of this interface.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_color_texture:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **_get_color_texture** **(** **)** |virtual|

Return color texture into which to render (if applicable).

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_depth_texture:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **_get_depth_texture** **(** **)** |virtual|

Return depth texture into which to render (if applicable).

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_name:

.. rst-class:: classref-method

:ref:`StringName<class_StringName>` **_get_name** **(** **)** |virtual| |const|

Returns the name of this interface.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_play_area:

.. rst-class:: classref-method

:ref:`PackedVector3Array<class_PackedVector3Array>` **_get_play_area** **(** **)** |virtual| |const|

Returns an :ref:`PackedVector3Array<class_PackedVector3Array>` that denotes the play areas boundaries (if applicable).

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_play_area_mode:

.. rst-class:: classref-method

:ref:`PlayAreaMode<enum_XRInterface_PlayAreaMode>` **_get_play_area_mode** **(** **)** |virtual| |const|

Returns the :ref:`PlayAreaMode<enum_XRInterface_PlayAreaMode>` that sets up our play area.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_projection_for_view:

.. rst-class:: classref-method

:ref:`PackedFloat64Array<class_PackedFloat64Array>` **_get_projection_for_view** **(** :ref:`int<class_int>` view, :ref:`float<class_float>` aspect, :ref:`float<class_float>` z_near, :ref:`float<class_float>` z_far **)** |virtual|

Returns the projection matrix for the given view as a :ref:`PackedFloat64Array<class_PackedFloat64Array>`.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_render_target_size:

.. rst-class:: classref-method

:ref:`Vector2<class_Vector2>` **_get_render_target_size** **(** **)** |virtual|

Returns the size of our render target for this interface, this overrides the size of the :ref:`Viewport<class_Viewport>` marked as the xr viewport.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_suggested_pose_names:

.. rst-class:: classref-method

:ref:`PackedStringArray<class_PackedStringArray>` **_get_suggested_pose_names** **(** :ref:`StringName<class_StringName>` tracker_name **)** |virtual| |const|

Returns a :ref:`PackedStringArray<class_PackedStringArray>` with pose names configured by this interface. Note that user configuration can override this list.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_suggested_tracker_names:

.. rst-class:: classref-method

:ref:`PackedStringArray<class_PackedStringArray>` **_get_suggested_tracker_names** **(** **)** |virtual| |const|

Returns a :ref:`PackedStringArray<class_PackedStringArray>` with tracker names configured by this interface. Note that user configuration can override this list.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_system_info:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **_get_system_info** **(** **)** |virtual| |const|

Returns a :ref:`Dictionary<class_Dictionary>` with system informationr elated to this interface.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_tracking_status:

.. rst-class:: classref-method

:ref:`TrackingStatus<enum_XRInterface_TrackingStatus>` **_get_tracking_status** **(** **)** |virtual| |const|

Returns a :ref:`TrackingStatus<enum_XRInterface_TrackingStatus>` specifying the current status of our tracking.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_transform_for_view:

.. rst-class:: classref-method

:ref:`Transform3D<class_Transform3D>` **_get_transform_for_view** **(** :ref:`int<class_int>` view, :ref:`Transform3D<class_Transform3D>` cam_transform **)** |virtual|

Returns a :ref:`Transform3D<class_Transform3D>` for a given view.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_velocity_texture:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **_get_velocity_texture** **(** **)** |virtual|

Return velocity texture into which to render (if applicable).

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_view_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **_get_view_count** **(** **)** |virtual|

Returns the number of views this interface requires, 1 for mono, 2 for stereoscopic.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__get_vrs_texture:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **_get_vrs_texture** **(** **)** |virtual|

.. container:: contribute

	There is currently no description for this method. Please help us by :ref:`contributing one <doc_updating_the_class_reference>`!

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__initialize:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **_initialize** **(** **)** |virtual|

Initializes the interface, returns ``true`` on success.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__is_initialized:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **_is_initialized** **(** **)** |virtual| |const|

Returns ``true`` if this interface has been initialized.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__post_draw_viewport:

.. rst-class:: classref-method

void **_post_draw_viewport** **(** :ref:`RID<class_RID>` render_target, :ref:`Rect2<class_Rect2>` screen_rect **)** |virtual|

Called after the XR :ref:`Viewport<class_Viewport>` draw logic has completed.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__pre_draw_viewport:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **_pre_draw_viewport** **(** :ref:`RID<class_RID>` render_target **)** |virtual|

Called if this is our primary **XRInterfaceExtension** before we start processing a :ref:`Viewport<class_Viewport>` for every active XR :ref:`Viewport<class_Viewport>`, returns ``true`` if that viewport should be rendered. An XR interface may return ``false`` if the user has taken off their headset and we can pause rendering.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__pre_render:

.. rst-class:: classref-method

void **_pre_render** **(** **)** |virtual|

Called if this **XRInterfaceExtension** is active before rendering starts. Most XR interfaces will sync tracking at this point in time.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__process:

.. rst-class:: classref-method

void **_process** **(** **)** |virtual|

Called if this **XRInterfaceExtension** is active before our physics and game process is called. Most XR interfaces will update its :ref:`XRPositionalTracker<class_XRPositionalTracker>`\ s at this point in time.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__set_anchor_detection_is_enabled:

.. rst-class:: classref-method

void **_set_anchor_detection_is_enabled** **(** :ref:`bool<class_bool>` enabled **)** |virtual|

Enables anchor detection on this interface if supported.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__set_play_area_mode:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **_set_play_area_mode** **(** :ref:`PlayAreaMode<enum_XRInterface_PlayAreaMode>` mode **)** |virtual| |const|

Set the play area mode for this interface.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__supports_play_area_mode:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **_supports_play_area_mode** **(** :ref:`PlayAreaMode<enum_XRInterface_PlayAreaMode>` mode **)** |virtual| |const|

Returns ``true`` if this interface supports this play area mode.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__trigger_haptic_pulse:

.. rst-class:: classref-method

void **_trigger_haptic_pulse** **(** :ref:`String<class_String>` action_name, :ref:`StringName<class_StringName>` tracker_name, :ref:`float<class_float>` frequency, :ref:`float<class_float>` amplitude, :ref:`float<class_float>` duration_sec, :ref:`float<class_float>` delay_sec **)** |virtual|

Triggers a haptic pulse to be emitted on the specified tracker.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method__uninitialize:

.. rst-class:: classref-method

void **_uninitialize** **(** **)** |virtual|

Uninitialize the interface.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method_add_blit:

.. rst-class:: classref-method

void **add_blit** **(** :ref:`RID<class_RID>` render_target, :ref:`Rect2<class_Rect2>` src_rect, :ref:`Rect2i<class_Rect2i>` dst_rect, :ref:`bool<class_bool>` use_layer, :ref:`int<class_int>` layer, :ref:`bool<class_bool>` apply_lens_distortion, :ref:`Vector2<class_Vector2>` eye_center, :ref:`float<class_float>` k1, :ref:`float<class_float>` k2, :ref:`float<class_float>` upscale, :ref:`float<class_float>` aspect_ratio **)**

Blits our render results to screen optionally applying lens distortion. This can only be called while processing ``_commit_views``.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method_get_color_texture:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **get_color_texture** **(** **)**

.. container:: contribute

	There is currently no description for this method. Please help us by :ref:`contributing one <doc_updating_the_class_reference>`!

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method_get_depth_texture:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **get_depth_texture** **(** **)**

.. container:: contribute

	There is currently no description for this method. Please help us by :ref:`contributing one <doc_updating_the_class_reference>`!

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method_get_render_target_texture:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **get_render_target_texture** **(** :ref:`RID<class_RID>` render_target **)**

Returns a valid :ref:`RID<class_RID>` for a texture to which we should render the current frame if supported by the interface.

.. rst-class:: classref-item-separator

----

.. _class_XRInterfaceExtension_method_get_velocity_texture:

.. rst-class:: classref-method

:ref:`RID<class_RID>` **get_velocity_texture** **(** **)**

.. container:: contribute

	There is currently no description for this method. Please help us by :ref:`contributing one <doc_updating_the_class_reference>`!

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`