VRChat shader PC now runs an IDE, Red Alert, SimCity, a path tracer and more inside fragment shaders
Michael_Moroz_ · x · 2026-10-17
Michael Moroz keeps expanding what his fragment-shader "PC" inside VRChat can run: alongside Quake 3, it now handles ImGui, a rigid body simulation, a path tracer, a browser, audio/video/image playback, a NES emulator, Command & Conquer: Tiberian Dawn, Red Alert, Quake 1, SimCity, and even a full working IDE with debugging via the TinyCC compiler.
Everything runs by emulating a CPU in GPU shaders — the series has become a landmark of shader-as-CPU hacking.
Related event: Dev Runs Quake 3 and More Inside a VRChat Shader(2 posts)→
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