1. A method for determining areas of sub-pixel regions formed by edges in a pixel, comprising: receiving a first fill style to a first side of an edge, a second fill style to a second side of the edge, and a projected area of the edge to the second side of the edge; determining if there is a first sub-pixel region in a cell for the pixel having the first fill style; if there is a first sub-pixel region in the cell having the first fill style: incrementing a first area of the first sub-pixel region by the difference between one unit area of one pixel and the projected area; modularizing the first area by one unit area; if there is not a first sub-pixel region in the cell having the first fill style, saving in the cell a second sub-pixel region having (1) the first fill style and (2) a second area equal to a difference between one unit area and the projected area.