Physically Based Rendering, fourth edition

Matt Pharr is a Distinguished Research Scientist at NVIDIA. He previously worked at Google, co-founded Neoptica, and co-founded Exluna. Wenzel Jakob is Assistant Professor of Computer Science at the École polytechnique fédérale de Lausanne (EPFL), where he leads the Realistic Graphics Lab. Greg Humphreys is a software engineer at a stealth startup. He previously worked on the Chrome graphics team at Google and as a professor of computer science at the University of Virginia.