godot-docs/classes/class_openxrapiextension.rst

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.. _class_OpenXRAPIExtension:

OpenXRAPIExtension
==================

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

Makes the OpenXR API available for GDExtension.

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

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

**OpenXRAPIExtension** makes OpenXR available for GDExtension. It provides the OpenXR API to GDExtension through the :ref:`get_instance_proc_addr<class_OpenXRAPIExtension_method_get_instance_proc_addr>` method, and the OpenXR instance through :ref:`get_instance<class_OpenXRAPIExtension_method_get_instance>`.

It also provides methods for querying the status of OpenXR initialization, and helper methods for ease of use of the API with GDExtension.

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

Tutorials
---------

- `XrResult documentation <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrResult.html>`__

- `XrInstance documentation <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrInstance.html>`__

- `XrSpace documentation <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrSpace.html>`__

- `XrSession documentation <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrSession.html>`__

- `XrSystemId documentation <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrSystemId.html>`__

- `xrBeginSession documentation <https://registry.khronos.org/OpenXR/specs/1.0/man/html/xrBeginSession.html>`__

- `XrPosef documentation <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrPosef.html>`__

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

Methods
-------

.. table::
   :widths: auto

   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`               | :ref:`can_render<class_OpenXRAPIExtension_method_can_render>` **(** **)**                                                                                                |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`           | :ref:`get_error_string<class_OpenXRAPIExtension_method_get_error_string>` **(** :ref:`int<class_int>` result **)**                                                       |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                 | :ref:`get_instance<class_OpenXRAPIExtension_method_get_instance>` **(** **)**                                                                                            |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                 | :ref:`get_instance_proc_addr<class_OpenXRAPIExtension_method_get_instance_proc_addr>` **(** :ref:`String<class_String>` name **)**                                       |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                 | :ref:`get_next_frame_time<class_OpenXRAPIExtension_method_get_next_frame_time>` **(** **)**                                                                              |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                 | :ref:`get_play_space<class_OpenXRAPIExtension_method_get_play_space>` **(** **)**                                                                                        |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                 | :ref:`get_session<class_OpenXRAPIExtension_method_get_session>` **(** **)**                                                                                              |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`String<class_String>`           | :ref:`get_swapchain_format_name<class_OpenXRAPIExtension_method_get_swapchain_format_name>` **(** :ref:`int<class_int>` swapchain_format **)**                           |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`int<class_int>`                 | :ref:`get_system_id<class_OpenXRAPIExtension_method_get_system_id>` **(** **)**                                                                                          |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`               | :ref:`is_initialized<class_OpenXRAPIExtension_method_is_initialized>` **(** **)**                                                                                        |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`               | :ref:`is_running<class_OpenXRAPIExtension_method_is_running>` **(** **)**                                                                                                |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`               | :ref:`openxr_is_enabled<class_OpenXRAPIExtension_method_openxr_is_enabled>` **(** :ref:`bool<class_bool>` check_run_in_editor **)** |static|                             |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Transform3D<class_Transform3D>` | :ref:`transform_from_pose<class_OpenXRAPIExtension_method_transform_from_pose>` **(** const void* pose **)**                                                             |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`bool<class_bool>`               | :ref:`xr_result<class_OpenXRAPIExtension_method_xr_result>` **(** :ref:`int<class_int>` result, :ref:`String<class_String>` format, :ref:`Array<class_Array>` args **)** |
   +---------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

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

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

.. _class_OpenXRAPIExtension_method_can_render:

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:ref:`bool<class_bool>` **can_render** **(** **)**

Returns ``true`` if OpenXR is initialized for rendering with an XR viewport.

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

----

.. _class_OpenXRAPIExtension_method_get_error_string:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_error_string** **(** :ref:`int<class_int>` result **)**

Returns an error string for the given `XrResult <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrResult.html>`__.

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

----

.. _class_OpenXRAPIExtension_method_get_instance:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_instance** **(** **)**

Returns the `XrInstance <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrInstance.html>`__ created during the initialization of the OpenXR API.

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

----

.. _class_OpenXRAPIExtension_method_get_instance_proc_addr:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_instance_proc_addr** **(** :ref:`String<class_String>` name **)**

Returns the function pointer of the OpenXR function with the specified name, cast to an integer. If the function with the given name does not exist, the method returns ``0``.

\ **Note:** ``openxr/util.h`` contains utility macros for acquiring OpenXR functions, e.g. ``GDEXTENSION_INIT_XR_FUNC_V(xrCreateAction)``.

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

----

.. _class_OpenXRAPIExtension_method_get_next_frame_time:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_next_frame_time** **(** **)**

Returns the timing for the next frame.

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

----

.. _class_OpenXRAPIExtension_method_get_play_space:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_play_space** **(** **)**

Returns the play space, which is an `XrSpace <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrSpace.html>`__ cast to an integer.

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

----

.. _class_OpenXRAPIExtension_method_get_session:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_session** **(** **)**

Returns the OpenXR session, which is an `XrSession <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrSession.html>`__ cast to an integer.

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

----

.. _class_OpenXRAPIExtension_method_get_swapchain_format_name:

.. rst-class:: classref-method

:ref:`String<class_String>` **get_swapchain_format_name** **(** :ref:`int<class_int>` swapchain_format **)**

Returns the name of the specified swapchain format.

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

----

.. _class_OpenXRAPIExtension_method_get_system_id:

.. rst-class:: classref-method

:ref:`int<class_int>` **get_system_id** **(** **)**

Returns the id of the system, which is a `XrSystemId <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrSystemId.html>`__ cast to an integer.

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

----

.. _class_OpenXRAPIExtension_method_is_initialized:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_initialized** **(** **)**

Returns ``true`` if OpenXR is initialized.

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

----

.. _class_OpenXRAPIExtension_method_is_running:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **is_running** **(** **)**

Returns ``true`` if OpenXR is running (`xrBeginSession <https://registry.khronos.org/OpenXR/specs/1.0/man/html/xrBeginSession.html>`__ was successfully called and the swapchains were created).

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

----

.. _class_OpenXRAPIExtension_method_openxr_is_enabled:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **openxr_is_enabled** **(** :ref:`bool<class_bool>` check_run_in_editor **)** |static|

Returns ``true`` if OpenXR is enabled.

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

----

.. _class_OpenXRAPIExtension_method_transform_from_pose:

.. rst-class:: classref-method

:ref:`Transform3D<class_Transform3D>` **transform_from_pose** **(** const void* pose **)**

Creates a :ref:`Transform3D<class_Transform3D>` from an `XrPosef <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrPosef.html>`__.

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

----

.. _class_OpenXRAPIExtension_method_xr_result:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **xr_result** **(** :ref:`int<class_int>` result, :ref:`String<class_String>` format, :ref:`Array<class_Array>` args **)**

Returns ``true`` if the provided `XrResult <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrResult.html>`__ (cast to an integer) is successful. Otherwise returns ``false`` and prints the `XrResult <https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrResult.html>`__ converted to a string, with the specified additional information.

.. |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.)`