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Tile based rendering of smooth points using polygons

  • US 9,589,375 B2
  • Filed: 02/12/2014
  • Issued: 03/07/2017
  • Est. Priority Date: 05/25/2004
  • Status: Active Grant
First Claim
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1. A method for a computing device to render a circular point on a display device, the circular point having a center, radius and a circumference and enclosed within a bounding area having a larger circumference than the circumference of the circular point, comprising:

  • sending, by a vertex and section generator, packets of information that define edges for processing and define the bounding area, the packets including flags that control mask generation and identify one or more sections of the bounding area to be processed, the bounding area comprising multiple predetermined sections, wherein the number of predetermined sections in the bounding area depends on the size and placement of the circular point;

    logically dividing the bounding area into a plurality of tiles, wherein the size of each of the plurality of tiles is determined by a user;

    classifying at least one of the one or more tiles of the bounding area into a predetermined section of the bounding area according to the center and the radius of the circular point;

    generating a mask, according to the flags in the packets, for the at least one tile of the bounding area; and

    rendering the circular point according to the mask for the at least one tile of the bounding area.

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