I Came, I Prompted, I Left Part 2: Building a GPU Driver From Scratch in One Month — Cody Ho

Created 9/16/2026 at 5:53:36 AM • Edited 9/16/2026 at 5:56:06 AM

TL;DR: Niklas and I built a fully OpenGL ES 3.0 compliant GPU driver for the M4 Mac Mini and MacBook Neo in about a month, a process which normally takes years. Here is Chrome and Firefox running WebGL on the M4 Mac Mini with working compositing:

Ninety-nine percent of the time a simple /goal resume or “keep going” was enough to have the LLM continue (which also shows the restrictions were overly aggressive), but they still broke my unattended workflow. I coded the fastest, dumbest possible solution: a daemon that takes a screenshot every minute, diffs it against the last screenshot, and if identical (because Codex stopped making progress) types /goal resume. I accidentally left it on in some group chats

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