public HmdToWorldTransformer(float estimatedEyeTrackerLatency_s)
{
_estimatedEyeTrackerLatency_s = estimatedEyeTrackerLatency_s;
var latency_s = (_estimatedPrediction_us / 1000000f) + estimatedEyeTrackerLatency_s;
var frameLength_s = 1 / (XRDevice.refreshRate > 1 ? XRDevice.refreshRate : 90);
_headPoseDelayInFrames = Mathf.CeilToInt(latency_s / frameLength_s);
_history = new HeadPoseSample[_headPoseDelayInFrames + 1];
_cameraTransform = CameraHelper.GetCameraTransform();
_useOpenVR = OpenVRManager.IsAvailable();
}