1. A method of rendering a graphic object, said method comprising: tessellating the graphic object into a plurality of polygons; forming a plurality of expanded polygons based on the plurality of polygons, said expanded polygons encompassing sampling points of pixels touched by edges of the graphic object; and rendering the plurality of expanded polygons for rendering the graphic object in accordance with a centre-intersect pixel placement rule, wherein pixels of the plurality of expanded polygons violating an area-intersect pixel placement rule are excluded.