ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,043, issued on May 19, was assigned to Imagination Technologies Ltd. (Kings Langley, Great Britain).
"Coarse depth test in graphics processing systems" was invented by Lorenzo Belli (Watford, Great Britain) and Robert Brigg (Watford, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "Coarse depth testing is performed in a graphics processing system having a rendering space divided into a plurality of tiles. A depth range for a tile identifies a depth range based on primitives previously processed. A determination is made based on the depth range as to whether all or a portion of a primitive is hidden in the tile. If at least a portion is no...