ALEXANDRIA, Va., July 16 -- United States Patent no. 12,670,650, issued on June 30, was assigned to Apple Inc. (Cupertino, Calif.).

"Ray cache with ray transform support for ray tracing" was invented by Ali Rabbani Rankouhi (Bushey, Great Britain), David J. Bermingham (Cambridge, Great Britain) and Fergus W. MacGarry (Cambridge, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques are disclosed relating to caching data for ray tracing in graphics processors. In some embodiments, ray intersect accelerator circuitry includes traversal circuitry configured to perform intersection tests between rays and bounding regions of an acceleration data structure and transform circuitry configured to, i...