ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,725,345, issued on Sept. 1, was assigned to NVIDIA Corp. (Santa Clara, Calif.).

"Ray tracing hardware acceleration with alternative world space transforms" was invented by Gregory Muthler (Chapel Hill, N.C.), John Burgess (Austin, Texas), James Robertson (Austin, Texas) and Magnus Andersson (Skane, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "Enhanced techniques applicable to a ray tracing hardware accelerator for traversing a hierarchical acceleration structure are disclosed. The traversal efficiency of such hardware accelerators are improved, for example, by transforming a ray, in hardware, from the ray's coordinate space to two or more coord...