C Specification

The xrCreateSession function is defined as:

// Provided by XR_VERSION_1_0
XrResult xrCreateSession(
    XrInstance                                  instance,
    const XrSessionCreateInfo*                  createInfo,
    XrSession*                                  session);

Parameters

Parameter Descriptions

  • instance is the instance from which XrSessionCreateInfo::systemId was retrieved.

  • createInfo is a pointer to an XrSessionCreateInfo structure containing information about how to create the session.

  • session is a pointer to a handle in which the created XrSession is returned.

Description

Creates a session using the provided createInfo and returns a handle to that session. This session is created in the XR_SESSION_STATE_IDLE state, and a corresponding XrEventDataSessionStateChanged event to the XR_SESSION_STATE_IDLE state must be generated as the first such event for the new session.

The runtime must return XR_ERROR_GRAPHICS_REQUIREMENTS_CALL_MISSING (XR_ERROR_VALIDATION_FAILURE may be returned due to legacy behavior) on calls to xrCreateSession if a function named like xrGet*GraphicsRequirements has not been called for the same instance and XrSessionCreateInfo::systemId. (See graphics binding extensions for details.)

Valid Usage (Implicit)
Return Codes
On success, this command returns

  • XR_SUCCESS

On failure, this command returns

  • XR_ERROR_VALIDATION_FAILURE

  • XR_ERROR_RUNTIME_FAILURE

  • XR_ERROR_HANDLE_INVALID

  • XR_ERROR_INSTANCE_LOST

  • XR_ERROR_OUT_OF_MEMORY

  • XR_ERROR_LIMIT_REACHED

  • XR_ERROR_SYSTEM_INVALID

  • XR_ERROR_INITIALIZATION_FAILED

  • XR_ERROR_GRAPHICS_REQUIREMENTS_CALL_MISSING

  • XR_ERROR_GRAPHICS_DEVICE_INVALID

See Also

XR_VERSION_1_0, XrExtensionProperties, XrInstance, XrSession, XrSessionCreateFlags, XrSessionCreateInfo, xrBeginSession, xrDestroySession, xrEndSession

Document Notes

For more information, see the OpenXR Specification

This page is extracted from the OpenXR Specification. Fixes and changes should be made to the Specification, not directly.

Copyright

Copyright 2014-2025 The Khronos Group Inc.

This work is licensed under a Creative Commons Attribution 4.0 International License.