Valve programmer reveals difficulties of working on virtual reality

Valve programmer Michael Abrash, who is heading the team for the company's virtual reality headset, has made a post on the Valve blog detailing the difficulties of working on virtual and augmented reality. The main takeaway from the post is the subject of latency. According to the post, latency is the biggest enemy of virtual reality.Abrash wrote, "When it comes to VR and AR, latency is fundamental—if you don't have low enough latency, it's impossible to deliver good experiences, by which I mean virtual objects that your eyes and brain accept as real."The biggest problem from latency is perceiving virtual objects to be real. Real, in this sense, doesn't mean that they don't look virtual, "but rather that your perception of them as part of the world as you move your eyes, head, and body is indistinguishable from your perception of real objects."

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