C Specification

The xrEnumerateViewConfigurationViews function is defined as:

XrResult xrEnumerateViewConfigurationViews(
    XrInstance                                  instance,
    XrSystemId                                  systemId,
    XrViewConfigurationType                     viewConfigurationType,
    uint32_t                                    viewCapacityInput,
    uint32_t*                                   viewCountOutput,
    XrViewConfigurationView*                    views);

Parameters

Parameter Descriptions
  • instance is the instance from which systemId was retrieved.

  • systemId is the XrSystemId whose view configuration is being queried.

  • viewConfigurationType is the XrViewConfigurationType of the configuration to get.

  • viewCapacityInput is the capacity of the views array, or 0 to indicate a request to retrieve the required capacity.

  • viewCountOutput is a pointer to the count of views written, or a pointer to the required capacity in the case that viewCapacityInput is 0.

  • views is a pointer to an array of XrViewConfigurationView values, but can be NULL if viewCapacityInput is 0.

Description

Each XrViewConfigurationType defines the number of views associated with it. Applications can query more details of each view element using xrEnumerateViewConfigurationViews. If the supplied viewConfigurationType is not supported by this XrInstance and XrSystemId, the runtime must return XR_ERROR_VIEW_CONFIGURATION_TYPE_UNSUPPORTED.

Runtimes must always return identical buffer contents from this enumeration for the given systemId and viewConfigurationType for the lifetime of the instance.

Valid Usage (Implicit)
  • instance must be a valid XrInstance handle

  • viewConfigurationType must be a valid XrViewConfigurationType value

  • viewCountOutput must be a pointer to a uint32_t value

  • If viewCapacityInput is not 0, views must be a pointer to an array of viewCapacityInput XrViewConfigurationView structures

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_SIZE_INSUFFICIENT

  • XR_ERROR_VIEW_CONFIGURATION_TYPE_UNSUPPORTED

  • XR_ERROR_SYSTEM_INVALID

See Also

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 (c) 2014-2021, The Khronos Group Inc.