aiaf Gaze-independent dithering for dynamically foveated displays
Interesting — although this is technically just a patent — I'd say this pretty much confirms that temporal dithering is used on the Vision Pro
(I mean… it's Apple, makes sense lol.)
Funnily enough, from my experience trying the Vision Pro for 2 hours straight, I'd actually say it's the one modern Apple device where I didn't get the usual dithering symptoms…
And now, I actually think this is because of what you discovered about how "there's no time to dither" when analyzing video footage on an M1 Mac.
What you're seeing on the Vision Pro actually is "naturally moving" constantly, because the passthrough feed and UI are all reacting to the smallest movements of the head, which actually made the display a lot more comfortable to me.
So there technically isn't anything "that is supposed to be entirely still but is subliminally moving", compared to other Apple devices that dither, because everything is moving in sync with the user anyway. This made it a lot easier for my brain to process the display, surprisingly enough.
Still good to note though, as I've heard some people are sensitive to dithering even with moving content like movies and games, so the Vision Pro would probably not be a good fit for them.
(In my case, I'm still very sensitive to dithering when it's used on still text and images, but it's far less of an issue for me when playing a fast paced game for example.)