> Top row shows a Perlin noise texture<p>Side-tangent story:<p>I am continually impressed that an algorithm invented in the early 80s is still the go-to way of creating noise all over the place, from Pixar productions to Skia Shaders to Unity3D and beyond. I had the pleasure to meet the inventor Ken a couple years ago at SIGGRAPH in LA, where after 30 years he still shows up just to see what's new and hang out with us "normal" people. I was at a table with him chatting away for over an hour, having no clue who he was, even though his badge clearly said Ken Perlin. I didn't make the connection until my friend said "hey - you know that's the guy who made Perlin noise, right?", remembering that I had a several months prior proclaimed my joy at having discovered Perlin Noise and using it extensively in my project. I'm generally not impressed by celebrities of any sort, but in this case, I had to stop him mid-conversation to thank him many times over (including offering him a big hug) since I've had the pleasure of using various incantations of Perlin Noise over the years. Truly an awesome and humble guy.