Rather than display a dancer’s 1:1 movements on screen, they used a pre-animated avatar that merely glows in the areas a real dancer is off.So there's plenty of guides out there that cover how to play any normal game in VR with a standard controller (Steam Controller, DS4, Xbox One controller etc.). Look at the way Harmonix handled Kinect in their Dance Central series. So what can we do until then, until the technical breakthroughs come through that make displays and processing faster to build the feel we want? I think we’re entering the era of almost-virtual. So that means we’re 16 milliseconds away from true, simulated experiences–or as he puts it, “a long way from 20 milliseconds, and light-years away from 7 milliseconds.” In a best-case scenario, he estimates we can reach about 36 milliseconds today in the best conditions (though in reality, motion control rigs like Kinect may hover closer to 150 milliseconds!). He shows in simple math just how far we are from these “natural” experiences that really feel natural.Įventually, Abrash settles on the magic number of 20 milliseconds as a goal for virtual and augmented reality experiences. He breaks down the processing, rendering, and display pipeline that video-game companies worry about for every frame they put on your TV. Was that technical enough for you? Abrash goes even deeper. Either way, the error is very noticeable. Put another way, the object positions are wrong by 30 pixels. Then as your head turns, the virtual images being displayed are based on 50 milliseconds-old data, which means that their positions are off by three degrees, which is wider than your thumb held at arm’s length. Also suppose that latency is 50 milliseconds and resolution is 1K x 1K over a 100-degree FOV. That sounds fast, but in fact it’s just a slow turn you are capable of moving your head at hundreds of degrees/second.

Suppose you rotate your head at 60 degrees/second.

But that’s a cop-out, isn’t it? The better, far more technical answer is that natural human motions–as simple as turning one’s head–are incredibly ripe with information. If it’s 15 milliseconds, we’re a lot better off.īut why do we need so much speed? Why do we have grander expectations for these reality-based experiences than our gamepad or mouse-based first-person shooters? The short answer is that we’re all experts on what being human feels like. Indeed, if the true threshold of human perception is seven milliseconds, we’re in trouble for augmented and virtual reality. 007 seconds–no time at all in its own right–but even worse, an impossibly short period of time, as LCDs alone can take that long to refresh an image at the pixel level (with no processing included). “I can tell you from personal experience that more than 20 milliseconds is too much for VR and especially AR, but research indicates that 15 milliseconds might be the threshold, or even 7 milliseconds,” Abrash writes on his blog.

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