You need to look right at where they want you to look - so in this example you need to look right at the center point of the image. If your gave drifts off to the side then it looks bad.
The same with 3D movies, if you don't want to look directly at what the director wanted you to look at, you end up getting seasick.
Do VR headsets have gaze tracking these days?
Since the field of view is limited in today's VR displays anyhow, you don't lose much from the foveated rendering: if you look to the side of display, much of your own field of view is now black, which is more limiting than the fact that the few pixels that you still see are rendered in a blocky fashion.
One nice benefit of the Quest 2 is that it can run Quest 2 games without be it.
It's still a feature in the Oculus runtime but they only recommend it in specific situations now, and they try and manage the quality outside of the game because way too many developers just cranked it to Max and it made their games look terrible.
You can easily tell when games have it cranked up and the quality drop off at the edge is very severe. Perf improvements are only moderate.
Eye tracking foveated rendering is much more useful but a bit of a pipe dream right now and still only gives a max improvement factor of 2-5x or something like that.
They could do statistical gaze tracking on a 2D version of the movie scene using a small test audience, and then render the 3D scene based on the results.
I happen to also struggle with human face recognition, so it's likely I'm just wired different.
https://venturebeat.com/2019/05/23/playstations-dominic-mall...
They do (e.g. Vive Pro Eye, HP Reverb G2 Omnicept Edition). And checking that on google is much faster than writing this sentence.