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Both Abrash and Luebke think foveated rendering is so important to the VR industry that the eye-tracking problem will be solved within five years. According to Abrash, the failure to crack foveated rendering is "the greatest single risk factor" to his predictions of dramatic improvements in VR realism over the next five years.

I think the "eye-tracking problem" will be solved much sooner than five years, but regardless, I'll be upgrading from my rift much sooner than that depending on hardware availability.
 
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