https://karimalsalah.github.io/guarana/blog/ Engineering notes from Guarana, an open-source Switch 2 emulator fork for integrated GPUs: what we measured, how, and what is still in progress. en Fri, 13 Nov 2026 12:00:00 +0000 https://karimalsalah.github.io/guarana/assets/social-preview.png https://karimalsalah.github.io/guarana/blog/ https://karimalsalah.github.io/guarana/blog/hyrule-field-shader-fix-intel-arc.html https://karimalsalah.github.io/guarana/blog/hyrule-field-shader-fix-intel-arc.html Fri, 13 Nov 2026 12:00:00 +0000 Guarana contributors Shaders How EDEN_NX2_GM=11 cut a foliage draw from 15.7 to 5.8 ms and took Hyrule Field from 14.8 to 22.8 game fps on an Arc 140T iGPU, and where the proof stops. https://karimalsalah.github.io/guarana/blog/frame-pacing-frame-generation-120hz-oled.html https://karimalsalah.github.io/guarana/blog/frame-pacing-frame-generation-120hz-oled.html Fri, 13 Nov 2026 12:00:00 +0000 Guarana contributors Frame pacing Why motion stuttered with frame generation on: forced FIFO, a present thread not locked to vblank, fixed-fraction prediction, and the vblank-locked presenter that shipped in v20.1. https://karimalsalah.github.io/guarana/blog/switch-2-emulator-boot-time.html https://karimalsalah.github.io/guarana/blog/switch-2-emulator-boot-time.html Fri, 13 Nov 2026 12:00:00 +0000 Guarana contributors Boot time Boot timing marks show about 11 s of a 24.7 s boot is Vulkan instance creation. What the marks log, what is being cut next, and how to measure your own. https://karimalsalah.github.io/guarana/blog/emulator-built-for-ai-agents.html https://karimalsalah.github.io/guarana/blog/emulator-built-for-ai-agents.html Fri, 13 Nov 2026 12:00:00 +0000 Guarana contributors Contributing Rules in AGENTS.md, scoped agent-ready issues, a loopback MCP server that drives a running game, and a CI build for every pull request. How it all fits.