From a performance and technical perspective this is incredible. Well done!

It will never happen, but my dream is for the Asahi devs, Valve, and Apple to all get together to build out a cross-platform Proton to emulate and play games built for Windows on both x86 and ARM hardware running Linux.

A Steam Deck with the performance and power efficiency of an M-series ARM chip and the entire library of games that run on Proton is just...dreamy.

> Tessellation enables games like The Witcher 3 to generate geometry. The M1 has hardware tessellation, but it is too limited for DirectX, Vulkan, or OpenGL. We must instead tessellate with arcane compute shaders

> Geometry shaders are an older, cruder method to generate geometry. Like tessellation, the M1 lacks geometry shader hardware so we emulate with compute.

Is this potentially a part of why Apple doesn't want to support Vulkan themselves? Because they don't want to implement common Vulkan features in hardware, which leads to less than ideal performance?

(I realize performance is still relatively fast in practice, which is awesome!)

I’m just blown away at all the work they’re able to do with a platform that they basically reverse engineered. I’m glad to be contributing to their efforts. I’m also waiting for when M3 support comes! Such a cool group of engineers and hackers. I love it.

This is super cool.

So, wait, does this mean that gaming is better on Linux, on a Mac?

The M-series chips from Apple have some special hardware to help emulate x86 with near-native performance, right? I wonder if they take advantage of those features (actually I forget exactly what the features were).

I mean this is an incredible achievement either way. Everything is emulated, but they are still running AAA games. Wow.

Incredible work. May I also interest you in retrowin32 https://github.com/evmar/retrowin32/blob/main/README.md

Which is an attempt to collapse the stack so that fewer translation and virtualisation stages are needed.

Fantastic! A great proof of concept on Linux - lots of AAA gaming is already possible on Mac with Crossover and/or Parallels or VMWare Personal, which is free! While I have a Steam Deck, gaming on Mac works for me - I refuse to play Baldurs Gate 3 on a controller.

I'm slightly confused after reading about page alignment. Why would a 16k page be less aligned than a 4k page causing assumptions about pointers within those pages to break? The 4k pages on x86 are aligned on 4k boundaries, are the 16k pages on M1 aligned on <4k boundaries?