Matt Pharr is works as an engineer for Neoptica, a San Francisco start-up, where he works on interactive graphics. Previously, he was a member of the technical staff at NVIDIA and was a co-founder of Exluna, where he developed off-line rendering software and investigated applications of graphics hardware to high-quality rendering. He holds a BS degree from Yale University and a PhD from the Stanford Graphics Laboratory under the supervision of Pat Hanrahan, where he researched both theoretical and systems issues related to rendering and has written a series of SIGGRAPH papers on these topics.