This is used to indicate what points in the frame the TrackedPoseDriver will sample input from.
| UpdateAndBeforeRender | Sample input at both update, and directly before rendering. For smooth head pose tracking, we recommend using this value as it will provide the lowest input latency for the device. This is the default value for the UpdateType option |
| Update | Only sample input during the update phase of the frame. |
| BeforeRender | Only sample input directly before rendering |