C Specification

The xrPassthroughStartFB function is defined as:

// Provided by XR_FB_passthrough
XrResult xrPassthroughStartFB(
    XrPassthroughFB                             passthrough);

Parameters

Parameter Descriptions

Description

Starts an XrPassthroughFB feature. If the feature is not started, either explicitly with a call to xrPassthroughStartFB, or implicitly at creation using the behavior flags, it is considered paused. When the feature is paused, runtime will stop rendering and compositing all passthrough layers produced on behalf of the application, and may free up some or all the resources used to produce passthrough until xrPassthroughStartFB is called.

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

  • XR_SESSION_LOSS_PENDING

On failure, this command returns
  • XR_ERROR_FUNCTION_UNSUPPORTED

  • XR_ERROR_VALIDATION_FAILURE

  • XR_ERROR_RUNTIME_FAILURE

  • XR_ERROR_HANDLE_INVALID

  • XR_ERROR_INSTANCE_LOST

  • XR_ERROR_SESSION_LOST

  • XR_ERROR_UNEXPECTED_STATE_PASSTHROUGH_FB

  • XR_ERROR_FEATURE_UNSUPPORTED

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.

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