Developer Emulates RISC-V Computer in VRChat Shader, Runs Doom

Michael Moroz's open-source ShaderEmu emulates a 32-bit RISC-V computer inside a pixel shader running in VRChat, achieving a working window manager, playable Doom and a basic browser after two days of automated optimization by Claude Opus.

2026-10-07 ~ 2026-10-07 · 3 related posts

• Opus 5.5 spent 2 days optimizing a RISC-V emulator in a shader to run Doom — Michael_Moroz_ · 2026-10-07
• VRChat shader computer now runs a limited browser alongside Doom — Michael_Moroz_ · 2026-10-07
• Dev emulates an entire RISC-V PC inside a pixel shader, aiming to run Doom in VRChat — Michael_Moroz_ · 2026-10-07