He was awarded in 2014, along with Matt Pharr and Greg Humphreys, a Technical Achievement Oscar for their formalization and reference implementation of the concepts behind physically based rendering, as shared in their book Physically Based Rendering.
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As a founding employee at Pixar Animation Studios in the 1980s, Hanrahan was part of the design of the RenderMan Interface Specification and the RenderMan Shading Language.
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