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https://eheitzresearch.wordpress.com/415-2/
Real-Time Polygonal-Light Shading with Linearly Transformed Cosines Eric Heitz, Jonathan Dupuy, Stephen Hill and David Neubelt ACM SIGGRAPH 2016 Motivation Shading with area lights adds a great deal of realism to CG renders. However, it requires solving spherical equations that make it challenging for real-time rendering. In this project, we develop a new spherical distribution that allows us to s
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