godot-docs/classes/class_openxrextensionwrapperextension.rst

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.. _class_OpenXRExtensionWrapperExtension:

OpenXRExtensionWrapperExtension
===============================

**Inherits:** :ref:`Object<class_Object>`

Allows clients to implement OpenXR extensions with GDExtension.

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

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

**OpenXRExtensionWrapperExtension** allows clients to implement OpenXR extensions with GDExtension. The extension should be registered with :ref:`register_extension_wrapper<class_OpenXRExtensionWrapperExtension_method_register_extension_wrapper>`.

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

Methods
-------

.. table::
   :widths: auto

   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_get_composition_layer<class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer>`\ (\ index\: :ref:`int<class_int>`\ ) |virtual|                                                                                                                                        |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_get_composition_layer_count<class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer_count>`\ (\ ) |virtual|                                                                                                                                                           |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_get_composition_layer_order<class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer_order>`\ (\ index\: :ref:`int<class_int>`\ ) |virtual|                                                                                                                            |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>`                              | :ref:`_get_requested_extensions<class_OpenXRExtensionWrapperExtension_private_method__get_requested_extensions>`\ (\ ) |virtual|                                                                                                                                                                 |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`PackedStringArray<class_PackedStringArray>`                | :ref:`_get_suggested_tracker_names<class_OpenXRExtensionWrapperExtension_private_method__get_suggested_tracker_names>`\ (\ ) |virtual|                                                                                                                                                           |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Array<class_Array>`\[:ref:`Dictionary<class_Dictionary>`\] | :ref:`_get_viewport_composition_layer_extension_properties<class_OpenXRExtensionWrapperExtension_private_method__get_viewport_composition_layer_extension_properties>`\ (\ ) |virtual|                                                                                                           |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Dictionary<class_Dictionary>`                              | :ref:`_get_viewport_composition_layer_extension_property_defaults<class_OpenXRExtensionWrapperExtension_private_method__get_viewport_composition_layer_extension_property_defaults>`\ (\ ) |virtual|                                                                                             |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_before_instance_created<class_OpenXRExtensionWrapperExtension_private_method__on_before_instance_created>`\ (\ ) |virtual|                                                                                                                                                             |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`                                          | :ref:`_on_event_polled<class_OpenXRExtensionWrapperExtension_private_method__on_event_polled>`\ (\ event\: ``const void*``\ ) |virtual|                                                                                                                                                          |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_instance_created<class_OpenXRExtensionWrapperExtension_private_method__on_instance_created>`\ (\ instance\: :ref:`int<class_int>`\ ) |virtual|                                                                                                                                         |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_instance_destroyed<class_OpenXRExtensionWrapperExtension_private_method__on_instance_destroyed>`\ (\ ) |virtual|                                                                                                                                                                       |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_main_swapchains_created<class_OpenXRExtensionWrapperExtension_private_method__on_main_swapchains_created>`\ (\ ) |virtual|                                                                                                                                                             |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_pre_render<class_OpenXRExtensionWrapperExtension_private_method__on_pre_render>`\ (\ ) |virtual|                                                                                                                                                                                       |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_process<class_OpenXRExtensionWrapperExtension_private_method__on_process>`\ (\ ) |virtual|                                                                                                                                                                                             |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_register_metadata<class_OpenXRExtensionWrapperExtension_private_method__on_register_metadata>`\ (\ ) |virtual|                                                                                                                                                                         |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_session_created<class_OpenXRExtensionWrapperExtension_private_method__on_session_created>`\ (\ session\: :ref:`int<class_int>`\ ) |virtual|                                                                                                                                            |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_session_destroyed<class_OpenXRExtensionWrapperExtension_private_method__on_session_destroyed>`\ (\ ) |virtual|                                                                                                                                                                         |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_state_exiting<class_OpenXRExtensionWrapperExtension_private_method__on_state_exiting>`\ (\ ) |virtual|                                                                                                                                                                                 |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_state_focused<class_OpenXRExtensionWrapperExtension_private_method__on_state_focused>`\ (\ ) |virtual|                                                                                                                                                                                 |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_state_idle<class_OpenXRExtensionWrapperExtension_private_method__on_state_idle>`\ (\ ) |virtual|                                                                                                                                                                                       |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_state_loss_pending<class_OpenXRExtensionWrapperExtension_private_method__on_state_loss_pending>`\ (\ ) |virtual|                                                                                                                                                                       |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_state_ready<class_OpenXRExtensionWrapperExtension_private_method__on_state_ready>`\ (\ ) |virtual|                                                                                                                                                                                     |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_state_stopping<class_OpenXRExtensionWrapperExtension_private_method__on_state_stopping>`\ (\ ) |virtual|                                                                                                                                                                               |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_state_synchronized<class_OpenXRExtensionWrapperExtension_private_method__on_state_synchronized>`\ (\ ) |virtual|                                                                                                                                                                       |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_state_visible<class_OpenXRExtensionWrapperExtension_private_method__on_state_visible>`\ (\ ) |virtual|                                                                                                                                                                                 |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`_on_viewport_composition_layer_destroyed<class_OpenXRExtensionWrapperExtension_private_method__on_viewport_composition_layer_destroyed>`\ (\ layer\: ``const void*``\ ) |virtual|                                                                                                          |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_set_hand_joint_locations_and_get_next_pointer<class_OpenXRExtensionWrapperExtension_private_method__set_hand_joint_locations_and_get_next_pointer>`\ (\ hand_index\: :ref:`int<class_int>`, next_pointer\: ``void*``\ ) |virtual|                                                         |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_set_instance_create_info_and_get_next_pointer<class_OpenXRExtensionWrapperExtension_private_method__set_instance_create_info_and_get_next_pointer>`\ (\ next_pointer\: ``void*``\ ) |virtual|                                                                                             |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_set_session_create_and_get_next_pointer<class_OpenXRExtensionWrapperExtension_private_method__set_session_create_and_get_next_pointer>`\ (\ next_pointer\: ``void*``\ ) |virtual|                                                                                                         |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_set_swapchain_create_info_and_get_next_pointer<class_OpenXRExtensionWrapperExtension_private_method__set_swapchain_create_info_and_get_next_pointer>`\ (\ next_pointer\: ``void*``\ ) |virtual|                                                                                           |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_set_system_properties_and_get_next_pointer<class_OpenXRExtensionWrapperExtension_private_method__set_system_properties_and_get_next_pointer>`\ (\ next_pointer\: ``void*``\ ) |virtual|                                                                                                   |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                                            | :ref:`_set_viewport_composition_layer_and_get_next_pointer<class_OpenXRExtensionWrapperExtension_private_method__set_viewport_composition_layer_and_get_next_pointer>`\ (\ layer\: ``const void*``, property_values\: :ref:`Dictionary<class_Dictionary>`, next_pointer\: ``void*``\ ) |virtual| |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`OpenXRAPIExtension<class_OpenXRAPIExtension>`              | :ref:`get_openxr_api<class_OpenXRExtensionWrapperExtension_method_get_openxr_api>`\ (\ )                                                                                                                                                                                                         |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | |void|                                                           | :ref:`register_extension_wrapper<class_OpenXRExtensionWrapperExtension_method_register_extension_wrapper>`\ (\ )                                                                                                                                                                                 |
   +------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

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

----

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

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

.. _class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer:

.. rst-class:: classref-method

:ref:`int<class_int>` **_get_composition_layer**\ (\ index\: :ref:`int<class_int>`\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer>`

Returns a pointer to an ``XrCompositionLayerBaseHeader`` struct to provide the given composition layer.

This will only be called if the extension previously registered itself with :ref:`OpenXRAPIExtension.register_composition_layer_provider<class_OpenXRAPIExtension_method_register_composition_layer_provider>`.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer_count:

.. rst-class:: classref-method

:ref:`int<class_int>` **_get_composition_layer_count**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer_count>`

Returns the number of composition layers this extension wrapper provides via :ref:`_get_composition_layer<class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer>`.

This will only be called if the extension previously registered itself with :ref:`OpenXRAPIExtension.register_composition_layer_provider<class_OpenXRAPIExtension_method_register_composition_layer_provider>`.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer_order:

.. rst-class:: classref-method

:ref:`int<class_int>` **_get_composition_layer_order**\ (\ index\: :ref:`int<class_int>`\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer_order>`

Returns an integer that will be used to sort the given composition layer provided via :ref:`_get_composition_layer<class_OpenXRExtensionWrapperExtension_private_method__get_composition_layer>`. Lower numbers will move the layer to the front of the list, and higher numbers to the end. The default projection layer has an order of ``0``, so layers provided by this method should probably be above or below (but not exactly) ``0``.

This will only be called if the extension previously registered itself with :ref:`OpenXRAPIExtension.register_composition_layer_provider<class_OpenXRAPIExtension_method_register_composition_layer_provider>`.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__get_requested_extensions:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **_get_requested_extensions**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__get_requested_extensions>`

Returns a :ref:`Dictionary<class_Dictionary>` of OpenXR extensions related to this extension. The :ref:`Dictionary<class_Dictionary>` should contain the name of the extension, mapped to a ``bool *`` cast to an integer:

- If the ``bool *`` is a ``nullptr`` this extension is mandatory.

- If the ``bool *`` points to a boolean, the boolean will be updated to ``true`` if the extension is enabled.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__get_suggested_tracker_names:

.. rst-class:: classref-method

:ref:`PackedStringArray<class_PackedStringArray>` **_get_suggested_tracker_names**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__get_suggested_tracker_names>`

Returns a :ref:`PackedStringArray<class_PackedStringArray>` of positional tracker names that are used within the extension wrapper.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__get_viewport_composition_layer_extension_properties:

.. rst-class:: classref-method

:ref:`Array<class_Array>`\[:ref:`Dictionary<class_Dictionary>`\] **_get_viewport_composition_layer_extension_properties**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__get_viewport_composition_layer_extension_properties>`

Gets an array of :ref:`Dictionary<class_Dictionary>`\ s that represent properties, just like :ref:`Object._get_property_list<class_Object_private_method__get_property_list>`, that will be added to :ref:`OpenXRCompositionLayer<class_OpenXRCompositionLayer>` nodes.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__get_viewport_composition_layer_extension_property_defaults:

.. rst-class:: classref-method

:ref:`Dictionary<class_Dictionary>` **_get_viewport_composition_layer_extension_property_defaults**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__get_viewport_composition_layer_extension_property_defaults>`

Gets a :ref:`Dictionary<class_Dictionary>` containing the default values for the properties returned by :ref:`_get_viewport_composition_layer_extension_properties<class_OpenXRExtensionWrapperExtension_private_method__get_viewport_composition_layer_extension_properties>`.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_before_instance_created:

.. rst-class:: classref-method

|void| **_on_before_instance_created**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_before_instance_created>`

Called before the OpenXR instance is created.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_event_polled:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **_on_event_polled**\ (\ event\: ``const void*``\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_event_polled>`

Called when there is an OpenXR event to process. When implementing, return ``true`` if the event was handled, return ``false`` otherwise.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_instance_created:

.. rst-class:: classref-method

|void| **_on_instance_created**\ (\ instance\: :ref:`int<class_int>`\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_instance_created>`

Called right after the OpenXR instance is created.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_instance_destroyed:

.. rst-class:: classref-method

|void| **_on_instance_destroyed**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_instance_destroyed>`

Called right before the OpenXR instance is destroyed.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_main_swapchains_created:

.. rst-class:: classref-method

|void| **_on_main_swapchains_created**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_main_swapchains_created>`

Called right after the main swapchains are (re)created.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_pre_render:

.. rst-class:: classref-method

|void| **_on_pre_render**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_pre_render>`

Called right before the XR viewports begin their rendering step.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_process:

.. rst-class:: classref-method

|void| **_on_process**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_process>`

Called as part of the OpenXR process handling. This happens right before general and physics processing steps of the main loop. During this step controller data is queried and made available to game logic.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_register_metadata:

.. rst-class:: classref-method

|void| **_on_register_metadata**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_register_metadata>`

Allows extensions to register additional controller metadata. This function is called even when the OpenXR API is not constructed as the metadata needs to be available to the editor.

Extensions should also provide metadata regardless of whether they are supported on the host system. The controller data is used to setup action maps for users who may have access to the relevant hardware.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_session_created:

.. rst-class:: classref-method

|void| **_on_session_created**\ (\ session\: :ref:`int<class_int>`\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_session_created>`

Called right after the OpenXR session is created.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_session_destroyed:

.. rst-class:: classref-method

|void| **_on_session_destroyed**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_session_destroyed>`

Called right before the OpenXR session is destroyed.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_state_exiting:

.. rst-class:: classref-method

|void| **_on_state_exiting**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_state_exiting>`

Called when the OpenXR session state is changed to exiting.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_state_focused:

.. rst-class:: classref-method

|void| **_on_state_focused**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_state_focused>`

Called when the OpenXR session state is changed to focused. This state is the active state when the game runs.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_state_idle:

.. rst-class:: classref-method

|void| **_on_state_idle**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_state_idle>`

Called when the OpenXR session state is changed to idle.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_state_loss_pending:

.. rst-class:: classref-method

|void| **_on_state_loss_pending**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_state_loss_pending>`

Called when the OpenXR session state is changed to loss pending.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_state_ready:

.. rst-class:: classref-method

|void| **_on_state_ready**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_state_ready>`

Called when the OpenXR session state is changed to ready. This means OpenXR is ready to set up the session.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_state_stopping:

.. rst-class:: classref-method

|void| **_on_state_stopping**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_state_stopping>`

Called when the OpenXR session state is changed to stopping.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_state_synchronized:

.. rst-class:: classref-method

|void| **_on_state_synchronized**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_state_synchronized>`

Called when the OpenXR session state is changed to synchronized. OpenXR also returns to this state when the application loses focus.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_state_visible:

.. rst-class:: classref-method

|void| **_on_state_visible**\ (\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_state_visible>`

Called when the OpenXR session state is changed to visible. This means OpenXR is now ready to receive frames.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__on_viewport_composition_layer_destroyed:

.. rst-class:: classref-method

|void| **_on_viewport_composition_layer_destroyed**\ (\ layer\: ``const void*``\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__on_viewport_composition_layer_destroyed>`

Called when a composition layer created via :ref:`OpenXRCompositionLayer<class_OpenXRCompositionLayer>` is destroyed.

\ ``layer`` is a pointer to an ``XrCompositionLayerBaseHeader`` struct.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__set_hand_joint_locations_and_get_next_pointer:

.. rst-class:: classref-method

:ref:`int<class_int>` **_set_hand_joint_locations_and_get_next_pointer**\ (\ hand_index\: :ref:`int<class_int>`, next_pointer\: ``void*``\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__set_hand_joint_locations_and_get_next_pointer>`

Adds additional data structures when each hand tracker is created.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__set_instance_create_info_and_get_next_pointer:

.. rst-class:: classref-method

:ref:`int<class_int>` **_set_instance_create_info_and_get_next_pointer**\ (\ next_pointer\: ``void*``\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__set_instance_create_info_and_get_next_pointer>`

Adds additional data structures when the OpenXR instance is created.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__set_session_create_and_get_next_pointer:

.. rst-class:: classref-method

:ref:`int<class_int>` **_set_session_create_and_get_next_pointer**\ (\ next_pointer\: ``void*``\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__set_session_create_and_get_next_pointer>`

Adds additional data structures when the OpenXR session is created.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__set_swapchain_create_info_and_get_next_pointer:

.. rst-class:: classref-method

:ref:`int<class_int>` **_set_swapchain_create_info_and_get_next_pointer**\ (\ next_pointer\: ``void*``\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__set_swapchain_create_info_and_get_next_pointer>`

Adds additional data structures when creating OpenXR swapchains.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__set_system_properties_and_get_next_pointer:

.. rst-class:: classref-method

:ref:`int<class_int>` **_set_system_properties_and_get_next_pointer**\ (\ next_pointer\: ``void*``\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__set_system_properties_and_get_next_pointer>`

Adds additional data structures when interogating OpenXR system abilities.

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

----

.. _class_OpenXRExtensionWrapperExtension_private_method__set_viewport_composition_layer_and_get_next_pointer:

.. rst-class:: classref-method

:ref:`int<class_int>` **_set_viewport_composition_layer_and_get_next_pointer**\ (\ layer\: ``const void*``, property_values\: :ref:`Dictionary<class_Dictionary>`, next_pointer\: ``void*``\ ) |virtual| :ref:`🔗<class_OpenXRExtensionWrapperExtension_private_method__set_viewport_composition_layer_and_get_next_pointer>`

Adds additional data structures to composition layers created by :ref:`OpenXRCompositionLayer<class_OpenXRCompositionLayer>`.

\ ``property_values`` contains the values of the properties returned by :ref:`_get_viewport_composition_layer_extension_properties<class_OpenXRExtensionWrapperExtension_private_method__get_viewport_composition_layer_extension_properties>`.

\ ``layer`` is a pointer to an ``XrCompositionLayerBaseHeader`` struct.

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

----

.. _class_OpenXRExtensionWrapperExtension_method_get_openxr_api:

.. rst-class:: classref-method

:ref:`OpenXRAPIExtension<class_OpenXRAPIExtension>` **get_openxr_api**\ (\ ) :ref:`🔗<class_OpenXRExtensionWrapperExtension_method_get_openxr_api>`

Returns the created :ref:`OpenXRAPIExtension<class_OpenXRAPIExtension>`, which can be used to access the OpenXR API.

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

----

.. _class_OpenXRExtensionWrapperExtension_method_register_extension_wrapper:

.. rst-class:: classref-method

|void| **register_extension_wrapper**\ (\ ) :ref:`🔗<class_OpenXRExtensionWrapperExtension_method_register_extension_wrapper>`

Registers the extension. This should happen at core module initialization level.

.. |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.)`
.. |void| replace:: :abbr:`void (No return value.)`