公开(公告)号：US20210090323A1

公开(公告)日：2021-03-25

申请号：US17028887

申请日：2020-09-22

Applicant: Apple Inc.

Inventor： Siddharth S. Hazra ,  William J. Dobbie ,  Moinul H. Khan ,  Yanli Zhang ,  Yohan Rajan ,  Arthur Y. Zhang

IPC: G06T15/20 ,  G06F3/01 ,  G06T7/73 ,  G06T19/00

Abstract: Various implementations disclosed herein include devices, systems, and methods that dynamically-size zones used in foveated rendering of content that includes text. In some implementations, this involves adjusting the size of a first zone, e.g., a foveated gaze zone (FGZ), based on the apparent size of text from a viewpoint. For example, a FGZ may be increased or decreased in width, height, diameter, or other size attribute based on determining an angle subtended by one or more individual glyphs of the text from the viewpoint. Various implementations disclosed herein include devices, systems, and methods that select a text-rendering algorithm based on a relationship between (a) the rendering resolution of a portion of an image corresponding to a part of a glyph and (b) the size that the part of the glyph will occupy in the image.