Systems and methods for dithering for dynamically foveated content

An electronic device comprising:

• a display;
• an eye tracker configured to collect eye tracking data regarding a gaze of one or more of a user's eyes across the display;
• and
• processing circuitry operatively coupled to the display and configured to:
• receive the eye tracking data;
• generate pixel data for each frame of a plurality of frames of content based at least in part on the eye tracking data such that the content is configured to be shown on the display in a dynamically foveated manner;
• determine a plurality of dither blocks for each frame of the plurality of frames of content independent of the gaze of one or more of a user's eyes;
• apply a dither pattern to the frames of the plurality of frames of content based at least in part on the plurality of dither blocks;
• determine whether a foveation boundary mismatch is present in a frame of the plurality of frames of content, wherein the foveation boundary mismatch corresponds to a dither block of the plurality of dither blocks including pixels that are located in more than one foveation grouping region of a plurality of foveation grouping regions, wherein each of the plurality of foveation grouping regions is associated with a resolution of the content and a different portion of the display.

A non-transitory computer-readable medium comprising instructions that, when executed, are configured to cause processing circuitry to:

• receive eye tracking data regarding a gaze of one or more of a user's eyes across a display;
• generate pixel data for each frame of a plurality of frames of content based at least in part on the eye tracking data such that the content is configured to be shown on the display in a dynamically foveated manner;
• apply a dither pattern to the frames of the plurality of frames of content based at least in part on a plurality of dither blocks and a plurality of pixel blocks, wherein each dither block of the plurality of dither blocks comprises a portion of the plurality of pixel blocks, wherein each pixel block of the plurality of dither blocks comprises a subset of a plurality of pixels of the display, wherein the plurality of dither blocks is determined independently of the gaze of one or more of a user's eyes;
• determine, based at least partially using a linear-feedback shift register, whether a foveation boundary mismatch is present in a frame of the plurality of frames of content, wherein the foveation boundary mismatch corresponds to a dither block of the plurality of dither blocks including pixels that are located in more than one foveation grouping region of a plurality of foveation grouping regions, wherein each of the plurality of foveation grouping regions is associated with a resolution of the content and a different portion of the display;
• and
• cause a dither block reset in response to determining a foveation boundary mismatch associated with the dither block.