发明名称 |
ANTI-ALIASING RASTER OPERATIONS |
摘要 |
A method and apparatus for performing anti-aliasing of rendered lines, text and images displayed by a workstation on a video display. The anti-aliasing is performed by logically dividing each addressable frame buffer pixel into sixteen sub-pixels and generating a gray scale value for the displayed pixel that is a function of the number of subpixels crossed by a portion of a rendered image. The invented circuitry is part of the circuitry used for combining source and destination data which forms the displayed image namely, an anti-aliasing mask and filter, adder/subtractor logic, saturation logic and anti-aliasing logic. |
申请公布号 |
CA1309183(C) |
申请公布日期 |
1992.10.20 |
申请号 |
CA19890600158 |
申请日期 |
1989.05.18 |
申请人 |
SUN MICROSYSTEMS, INC. |
发明人 |
PRIEM, CURTIS;WEBBER, THOMAS;MALACHOWSKY, CHRIS |
分类号 |
G09G5/00;G06T1/00;G06T1/20;G06T5/00;G09G5/28;G09G5/36;G09G5/393 |
主分类号 |
G09G5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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