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Well, it's the common algorithm used by a bunch of different rendering plugins for professional 3d design: V-Ray, RenderMan, MentalRay to name a few. That day would be many, many years ago. Note that those are used for both realistic and non-realistic rendering as ray-tracers tend to give much more control over the lighting parameters than the default renderers in most packages.
sphericalvoxel · 4323 days ago · link ·
Context, man! The post is about real-time raytracing, not professional 3D design.