Nice interview with John demoing and discussing his work:<p><i>"So the way this has gone, is, I decided to treat myself after Rage on there, I bought a, you know, a head mount for $1,500 or so. It's a little cottage industry, there's a few places that do these things with integration, and... it sucked. It was really bad. It was everything that I expected it to be, that it, it didn't look like there had been any progress in 20 years, since... or 15 years since I had looked at these things last.<p>But, when I got that, then, I started taking it apart, both literally and figuratively, to go ahead and see what are all of the aspects on here, on the sensing side, where, when I wrote my own test software for this, using their library to go ahead and get the head-tracking, it had 100ms of latency, and this just didn't make any sense to me. Why is it so bad, did they need to have so much filtering?<p>And, I wound up, I took the software that I wrote for Armadillo Aerospace for our rocket control with fiber-optic gyros, I took that gyro integration software and took raw values from the micro-machine sensors on there, and all the sudden it got way better. You know I can only guess that they may have filtering from 10 years ago when they had really noisy sensors, and they're a lot better now."</i><p>[...]<p><i>Resolution is gonna get better. We're gonna get to 120Hz displays, I'm haranguing all the display vendors about this. [...] Removing the latency, one of the cases that I've been making that shows the ridiculousness of it all, where, I can measure 50ms of delay on this, and I do that by, I have a program that switches colors when I hit a button, and you put a high-speed camera here, you mash it, and you wait, you count frames until it switches, and it's 50ms for that over a very fast display. That's more time than it takes to send a packet from America to England, you know. That's just ridiculous! But it's because router people and switch people care about latency, they know it's important so they don't pile it up. Display people don't know yet, but I'm trying to educate all of them about that."</i><p>[...]<p><i>"And this field of view (90 degree horizontal field of view, 110 degree vertical field of view), you couldn't get in a $10,000 head-mount display; actually, you still can't today, it's that much higher."</i><p>[...]<p><i>"The head mount display stuff is, it makes even this 8 year old game a fundamentally different experience. It really is like nothing you've ever played liked that... 10 times more graphics power doesn't give you that level of intensity."</i><p><a href="https://www.youtube.com/watch?v=NYa8kirsUfg" rel="nofollow">https://www.youtube.com/watch?v=NYa8kirsUfg</a>