Update of reprojection information based on head poses

An apparatus for reprojecting images, the apparatus comprising:

• at least one memory;
• and
• at least one processor coupled to the at least one memory, the at least one processor being configured to:
• receive a frame rendered based on a first head pose of a user of a display device;
• determine a portion of reprojection information for the frame based on a second head pose of the user of the display device, wherein the second head pose is obtained after the first head pose is obtained;
• update the portion of the reprojection information for the frame based on a third head pose of the user of the display device to generate updated reprojection information, wherein the third head pose is obtained after the second head pose is obtained;
• apply the updated reprojection information to the frame to generate a reprojected frame;
• and
• output the reprojected frame for display.

A non-transitory computer-readable medium having stored thereon instructions that, when executed by at least one processor, cause the at least one processor to:

• receive a frame rendered based on a first head pose of a user of a display device;
• determine a portion of reprojection information for the frame based on a second head pose of the user of the display device, wherein the second head pose is obtained after the first head pose is obtained;
• update the portion of the reprojection information for the frame based on a third head pose of the user of the display device to generate updated reprojection information, wherein the third head pose is obtained after the second head pose is obtained;
• apply the updated reprojection information to the frame to generate a reprojected frame;
• and
• output the reprojected frame for display.