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# Rendering

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“Rendering” is the final process of a movie, when the technical directors at Pixar calculate the color of every pixel in every frame of every shot in the film. If that sounds incredibly time-consuming, it is! But Pixar gets help from some mathematical equations.

Discover the basics behind the rendering equation. This lesson takes 35-40 minutes to complete.

Explore the most fundamental calculation a ray tracer does: line-plane intersection in 2D and 3D. This lesson involves solving systems of equations and takes at least 60 minutes to complete.