this post was submitted on 28 May 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
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To answer your question, I'm sure for the x86_64(not separate things btw) specific code it might use some sort of emulator or a translation layer. Idk WTF "microVM with FEX" is, maybe that's it?
But for the DX11 part, that's just the normal DirectX to Vulkan/OpenGL translation layer e.g. WineD3D.
There's actually nothing that special about DirectX on ARM, it's the same API. The translation layer just takes those API calls from DirectX11 and translates them to the equivalent in OpenGL, and then the Asahi Linux OpenGL driver takes of actually executing those commands on the GPU.