I built a GPU back end for Emacs
Summary
Andros Fenollosa details building a GPU-backed display backend for Emacs, creating a neutral driver layer with Metal on macOS and OpenGL on GNU/Linux, and integrating features like video inside buffers and shader-based cursor effects. The post covers architecture decisions, debugging challenges, interactions with the Emacs community, and reflections on using a large language model as a copilot. It concludes with lessons learned and plans to continue refining the OpenGL backend on Linux.