HYBRID HIDDEN-LINE PROCESSOR AND METHOD

摘要

A method for providing hybrid hidden-line processing for a plurality of polygons representing tessellated image data, wherein each polygon comprises a plurality of edges, is provided. The method comprises: - generating (506) a back-facing plate comprising polygons on a back-facing side of a silhouette of the tessellated image data and a front-facing plate comprising polygons on a front-facing side of the silhouette of the tessellated image data; - tracing (514) the edges and identifying at least one visibility change pixel in each of a subset of the traced edges; - for each visibility change pixel, determining (522) whether the traced edge is from the same plate as a polygon corresponding to the visibility change pixel determining for each traced edge to be from the same plate as the polygon corresponding to the visibility change pixel - displaying (532) the traced edge.