Apparatus for generating efficient wide-line ends

Details Apparatus for generating efficient wide-line ends Apparatus for generating efficient wide-line ends

2006-09-19

2006-09-19

Tung, Kee M. (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Shape generating

C345S611000, C345S612000

Reexamination Certificate

active

07109992

ABSTRACT:
A graphics processing circuit includes a line end generation circuit operative to generate line aligned end cap data in response to primitive data; and a rasterizer, coupled to the line end generation circuit, operative to generate pixel data representing a line to be rendered, the pixel data including the line aligned end cap data. A graphics processing method includes receiving primitive data for a line to be rendered, the primitive data including start endpoint data and stop endpoint data, determining the height and width of the line in screen space, determining line end cap orientation with respect to the line to be rendered, and determining vertices that define the line to be rendered, wherein the vertices define end caps aligned with the line to be rendered.

REFERENCES:
patent: 5847715 (1998-12-01), Fujita et al.
patent: 6297828 (2001-10-01), Fukuzawa
patent: 6433790 (2002-08-01), Taylor et al.
patent: 6480196 (2002-11-01), Harrington
patent: 6636231 (2003-10-01), Ali-Santosa
patent: 6947057 (2005-09-01), Nelson et al.

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