ALEXANDRIA, Va., June 16 -- United States Patent no. 12,307,571, issued on May 20, was assigned to NVIDIA Corp. (Santa Clara, Calif.).

"Automatic level-of-detail for physically-based materials" was invented by Lutz Kettner (Berlin) and Jan Jordan (Berlin).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method, computer readable medium, and system are disclosed for implementing automatic level-of-detail for physically-based materials. The method includes the steps of identifying a declarative representation of a material to be rendered, creating a reduced complexity declarative representation of the material by applying one or more term rewriting rules to the declarative representation of the material, and re...