Patent ID: 6369828
Filing Date: 2002-04-09
Classification: G06T

Abstract:
A method for providing antialiasing of a graphical image on a display, the graphical image generated from data describing at least one object, the display including a plurality of pixels, the at least one object including a plurality of fragments, a portion of the plurality of fragments intersecting a pixel of the plurality of pixels, each of the plurality of fragments including an indication of a portion of a corresponding pixel that is intersected, the method comprising the steps of:(a) providing at least one active region for the pixel, each of the at least one active region intersecting a first portion of the pixel; (b) providing at least one new region, a first new region of the at least one new region indicating where in the pixel the at least one active region and the fragment intersect, a second new region of the at least one new region indicating where in the pixel the at least one active region and the fragment do not intersect; (c) blending a portion of the fragment in a second portion of the pixel corresponding to the first new region of the at least one new region; and (d) updating the at least one active region to include each of the at least one new region.