Christos Obretenov is a shader architect and the CEO of LollipopShaders.Educated at Simon Fraser University with a BSc in computing science, specializing in computer graphics, Christos started contributing to the animation and film industry at Mainframe Entertainment in conjunction with Simon Fraser University. He continued his career by designing and developing shading software for Walt Disney's feature film The Wild, followed by shading and lighting for the films Superman Returns, Spider-Man 3, Beowulf, A Christmas Carol, Mars Needs Moms, and Life of Pi (which won the 2013 Oscar for Best Visual Effects). Since cofounding LollipopShaders, Christos and his team develops procedural solutions to shading and lighting, experimenting with physically plausible and nonphotorealistic shading. He teaches in-person workshops in rendering at such places as the Filmakedemie in Germany, FMX conferences, SIGGRAPH conferences, and School of Visual Arts in Shanghai. Christos resides in Vancouver, Canada.