SMI are working on fundamental technology for foveated displays with eye tracking. There&#x27;s also an HMD from FOVE on Kickstarter that intends to ship to backers in &quot;Fall 2016&quot;.<p>John Carmack suggested on Twitter that foveated rendering won&#x27;t be a performance win until a few more generations, when higher-resolution panels are more commonplace. Right now the necessary tracking and layering could actually reduce performance compared to rendering the full scene.