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OSU CS 519 - Introduction to RenderMan

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1mjb –December 21, 2011Oregon State UniversityComputer GraphicsIntroduction to RenderManMike [email protected] State Universitymjb –December 21, 2011Oregon State UniversityComputer Graphics1977: Star Wars IV: A New Hope1979: Ed Catmull, Alvy Ray Smith, and others leave NYIT to join LucasFilmImage processingEffects Image/Volume Rendering Hardware1984: John Lassiter leaves Disney Animation to join PixarDigital Editing and CompositingHistory of RenderMan, Imjb –December 21, 2011Oregon State UniversityComputer GraphicsImage/Volume Rendering HardwarePixar Image ComputerRendering SoftwareREYESRenderManStar Trek IIYoung Sherlock HolmesPixar Animation StudiosRIB Shade TreesprmanHistory of RenderMan, IImjb –December 21, 2011Oregon State UniversityComputer GraphicsPixar Animation Studios1986: Steve Jobs buys Pixar for $10MSteve Jobs adds another $60M to keep Pixar running1995: Toy Story1995: Pixar IPO -- Steve Jobs stake now worth $1.2B2004: Pixar bought by Disney for $7BSteve Jobs stake now worth $3.5B1988: Tin Toy – won Academy Award for Best Animated Short1993: RenderMan wins a Technical Academy AwardHistory of RenderMan, III1986: Luxo Jr.– Nominated for an Academy Awardmjb –December 21, 2011Oregon State UniversityComputer GraphicsRenderMan PipelineRIB FileBounding Box AnalysisDice into MicrofacetsCall ShadersDo Front-to-Back CompositingAssemble PixelsFinal ImageSplitmjb –December 21, 2011Oregon State UniversityComputer Graphics12 2 2 2(1 ) ,color color blackα α= + −01 1 1 1 12(1 ) ,color color colorα α= + −*0 0 0 01(1 ) .color color colorα α= + −*0 0 0 1 1 0 1 2 2 0 1 2(1 ) (1 )(1 ) (1 )(1 )(1 ) .color color color color blackα α α α α α α α α= + − + − − + − − −Substituting gives us the front-to-back equation:First, let’s think about it back-to-front:RenderMan Composites Starting at the Eye2mjb –December 21, 2011Oregon State UniversityComputer GraphicsRenderMan Renders at


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