ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,743,839, issued on Sept. 22, was assigned to Apple Inc. (Cupertino, Calif.).

"Page management and forward progress for ray tracing" was invented by Frank W. Liljeros (Sanford, Fla.), Karl D. Mann (Orlando, Fla.) and Per Christian Corneliussen (Orlando, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques are disclosed relating to memory page allocation for graphics processor. In some embodiments, a shader program includes a primary thread associated with ray tracing (that includes an instruction that indicates for the apparatus to launch one or more secondary threads). Memory resource allocator circuitry may receive a request to allocate a me...