Patent ID: 11941745
Assignee: NVIDIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A system comprising:
one or more graphics processing units (GPUs) to perform operations based at least on executing instructions stored in memory, the operations comprising:
determining one or more roughness values for a surface based at least on a point that corresponds to the surface in a virtual environment;
selecting a portion of a bidirectional reflectance distribution function (BRDF) lobe for the point based at least on the one or more roughness values, the portion of the BRDF lobe representing a subset of a probability space of the BRDF lobe;
based at least on the selecting, sampling the portion of the BRDF lobe according to a sampling bias to determine lighting condition data for the point; and
rendering one or more images corresponding to the virtual environment using the lighting condition data.