A path through a forest, rendered entirely with my hobby renderer, Takua Renderer. More info is available on my project pages and blog.

Hello, I'm Karl!

Born in Hannover, Germany and raised in Philadelphia, Pennsylvania, I am a senior software engineer at Walt Disney Animation Studios working on Disney's Hyperion Renderer. As part of the Hyperion team, I've worked on every Disney Animation theatrical release starting from Zootopia. I am very happily married to Harmony M. Li!

My areas of interest cover all things production rendering, including topics such as advanced light transport, renderer architectures, raytracing on interesting hardware, volume rendering, surface appearance, and more.

I am also a Master of Science in Computer Graphics candidate at Cornell University's Program of Computer Graphics. I did my undergraduate studies at the University of Pennsylvania, where I was part of CG@Penn and a student at The Wharton School. Previously, I have also worked at Pixar Animation Studios and Dreamworks Animation.

News:

2021.01.26: New main trailer for Raya and the Last Dragon is released!

2020.12.14: My entry to Pixar's RenderMan 'Magic Shop' Art Challenge got third place!

2020.12.10: Our Fall 2021 film, Encanto, is announced!

2020.11.23: I was on this week's episode of CG Garage to talk about Hyperion and production rendering and other stuff.

Older news...