METHOD AND APPARATUS FOR FILLING AN IMAGE

摘要

A method and apparatus (20) for performing hidden surface removal of an object based rasterised image is disclosed. The apparatus (20) receives pixel edge data (21) which is compared with a pixel position (22) in the rasterised seam line. The result is used to toggle an array of latches (26) which are input (25) with a decoder (30) arrangement of fill level data (24). Only those levels (25) that are active are output therefrom to be priority encoded (28) thereby outputting (29) only the highest active level.