Psychtoolbox>PsychOpenXRCore.{mex*} subfunction

oldEnable = PsychOpenXRCore(‘PresenterThreadEnable’, openxrPtr [, enableThread]);

Enable or disable asynchronous background presenter thread for OpenXR device
‘openxrPtr’.
The thread is required on some OpenXR runtimes in some situations to provide
stable visual stimulation if a user script doesn’t run an active tracking ->
render -> present loop, or runs the loop too slow / with pauses. It may also be
needed for timed stimulus presentation, or for half-way reasonable visual
stimulus onset timestamping. This is all highly dependent on the OpenXR runtime
in use. If possible, the thread should be avoided for better performance.
This returns the current setting in ‘oldEnable’. Optionally you can specify a
new setting as ‘enableThread’. enableThread must be either:
0 = Disable thread, all operations are done synchronously, driven by the user
script.
1 = Enable thread for driving the visual updating loop, independent of user
script.

###See also: Start Stop GetTrackingState NeedLocateForProjectionLayers