> Or you just mean they do some kind of low-res rendering mode to populate most of the framebuffer outside a smaller zone where they do full quality rendering?
This exactly. They don't reduce the resolution too much, but it's visible to an outside observer watching on a monitor.
That’s just to be about to have enough compute/bandwidth to drive the display. Other posters are correct that the DPI decreases away from the center and various optical aberrations increase. Foveated rendering won’t help with that.
This exactly. They don't reduce the resolution too much, but it's visible to an outside observer watching on a monitor.