Sub-frame scanout for latency reduction in virtual reality applications

A non-transitory, computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to perform steps comprising:

• dividing a frame into a plurality of slices, wherein each slice is a portion of the frame;
• and
• for each slice in the plurality of slices:
• sampling a sensor associated with a head mounted display to generate sample data corresponding to the slice,
• adjusting a viewport associated with rendering operations for the slice based on the sample data,
• rendering primitives associated with a model according to the viewport and rendering operations to generate image data for the slice,
• wherein the sampling, adjusting, and rendering is performed for each slice in the plurality of slices based on different sample data from the sensor for each slice in the frame, and the viewport changes for at least one slice of the plurality of slices.

A system, comprising:

• a head mounted display;
• and
• at least one processor configured to:
• divide a frame into a plurality of slices, wherein each slice is a portion of the frame, and
• for each slice in the plurality of slices:
• sample a sensor associated with the head mounted display to generate sample data corresponding to the slice,
• adjust a viewport associated with rendering operations for the slice based on the sample data,
• render primitives associated with a model according to the viewport and rendering operations to generate image data for the slice,
• wherein the sampling, adjusting, and rendering is performed for each slice in the plurality of slices based on different sample data from the sensor for each slice in the frame, and the viewport changes for at least one slice of the plurality of slices.