Patent ID: 7110003

Claim:
A method of rendering objects, the method comprising, for each object within a scanline, the steps of: determining each boundary pixel that overlaps both sides of a border of the object; computing a real opacity of each said boundary pixel, wherein the real opacity of a said boundary pixel is dependent upon the real opacities of subregions of said boundary pixel, and values representative of the areas of the respective subregions with respect to the total area of the boundary pixel, wherein the real opacity of each subregion is 1−(1−α) |n| where α is the intrinsic opacity of the object and n is the winding count for the subregion, and wherein the real opacity is a weighted sum of the real opacities of respective subregions, where the real opacities subregions are weighted with said values; and rendering each said boundary pixel by compositing using the corresponding computed real opacity.