MotivationI’m a huge fan of local multiplayer, and in particular local cooperative multiplayer. I’m also interested in 3D rendering, and especially raytracing.This blog post is the result of me finally – barely scraping into 2023 – writing about an idea I had in 2019, and which I implemented as a prototype in 2022. It uses the unique strengths of fully raytraced realtime rendering to implement a new kind of screen sharing for local multiplayer. But before that, some history.If you’re not interes...