Pathtracing tidbits: integrating animated blue noise

Alan Wolfe&rsquo;s paper, &ldquo;Using Blue Noise for Ray Traced Soft Shadows&rdquo;, presents a great method for reducing the perceived noise in soft shadows. It can be readily adapted to a path tracer as well, where it will yield images with better clarity, even with only a few samples. Take a look at an image rendered with regular RNG white noise in the left half, and blue noise in the right…