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We present a novel BFSDF that is energy-conserving, efficient, and easy to control, reproducing a wide range of hair and fur with just a few intuitive parameters. This model is implemented in our production path-tracer and has achieved unprecedented richness in our characters.
We present a technique to efficiently importance sample distant, all-frequency illumination in indoor scenes. Standard environment sampling is inefficient in such cases since the distant lighting is typically only visible through small openings (e.g. windows). This visibility is often addressed by manually placing a portal around each window to direct… (More)