Vuforia SDK Version: 7.5.*, 8.0 -
Description with steps to reproduce: We are observing an issue with the marker tracking which is only occurring on the newest phones (iPhone XR & iPhone XS Max). – We have not tested on a XS, but issue is Not observed in the iPhone X.
We are currently scaling a video based on the size of the image target (TrackableResult), and then applying a shader to it - the code is based off the VideoPlayback sample in the Advanced Topics.
It seems as if the newer phones are detecting a different (larger) size for those targets than all the other phones, so our scaling gets messed up on those particular devices (One single scaling factor worked across all devices until now).
In addition to the above, the video objects that we create are not completely anchored to the physical image target, as they are in the other phones. I.e: On the newer phones, as I move the phone in physical space while aiming at the image target, I can see the video object being displaced from the image target anchor inversely to the physical movements – If I aim at the target, and move left, the video object will displace right in relation to the physical image target.
Not entirely sure if it's a tracking issue or if something else is going on. But the main issue that we're having is that our code works perfectly on all the other iOS devices except the ones that were released the past year (iPhones XR, XS Max, XS?) -
Development OS (Mac OS X, Windows, Linux): Mac OS X -
Mobile OS and Version: iOS 12.0 -
Mobile Device Manufacturer and Model name: Apple iPhone XR -
Do the Vuforia Sample Applications show the same behavior?: Running the VideoPlayback sample app does Not show the problematic behavior. (Verified using Vuforia 8.0 and and the VideoPlayback Sample 8.0 code).