Bob Alfieri joined NVIDIA in 1999 and has over 35 years of experience in hardware and software engineering. At NVIDIA, he has worked as a digital designer and technical leader on various GPUs and chipsets, and has created common logic and methodologies used in all NVIDIA chips. He is focused on hardware primitives and algorithms for path tracing, film-quality physically-based rendering, stochastic sampling of lighting and geometry, compression, unified volumetric rendering, and scalable cloud graphics and physics. He has over 50 issued or outstanding patents.