Abstract: One embodiment of a virtual reality apparatus comprises: a graphics processing engine comprising a plurality of graphics processing stages, the graphics processing engine to render a plurality of image frames for left and right displays of a head mounted display (HMD); and foveation control hardware logic to independently control two or more of the plurality of graphics processing stages based on feedback received from an eye tracking module of the HMD, the feedback indicating a foveated region selected based on a current or anticipated direction of a user's gaze, the foveation control hardware logic to cause the two or more of the graphics processing stages to process the foveated region differently than other regions of the image frames.

Abstract: Embodiments of systems, apparatuses, and methods for a circular buffer in a redundant virtualization environment are disclosed. In one embodiment, an apparatus includes a head indicator storage location, an outgoing tail indicator storage location, a buffer tail storage location, and fetch hardware. The head indicator, outgoing tail indicators, and buffer tail indicators are to indicate a head, outgoing tail, and buffer tail, respectively, of a circular buffer. The fetch hardware is to fetch from the head of the circular buffer and advance the head no further than the outgoing tail. The buffer tail is to be filled by software and advanced no further than the head.