Tbh, why bother?

kernel32+user32+gdi32+d3d[11|12]+dxgi is a pretty great API abstraction for game development. And unlike Linux desktop APIs the Win32 APIs are actually stable, so those games will also work in 5 years, and most importantly, performance is the same or better than on Windows. It's unlikely that game devs directly targeting Vulkan would do any better, and when using a high level engine, any layering overhead in Proton is negligible anyway. And don't even get me started about the state of audio APIs on Linux ;)

Also don't underestimate the amount of workarounds and tweaks that (most likely) go into Proton for games that make poor system API use. Without Proton those game-specific hacks would need to go into MESA, Wayland, X11 or various system audio libraries. At least Proton is one central place to accumulate all the game-specific warts in some dusty corner of their code base.

TL;DR: just think of Proton as an extremely low level and slim cross-platform API for games (not all that different than SDL), and suddenly it makes a lot of sense. And I bet that in 5..10 years Windows will have regressed so much that it might actually be better to run games through a Proton-like shim even on Windows (assuming Windows hasn't become 'yet another Linux distro' by then anyway) ;)

▲

Const-me 2 hours ago | parent | next [-]

> run games through a Proton-like shim even on Windows

Already happening, to an extent. Specifically, modern Intel GPUs do not support DirectX 9 in hardware, yet legacy apps run fine. The readme.txt they ship with the drivers contains a paragraph which starts with the following text: “SOFTWARE: dxvk The zlib/libpng License” DXVK is a library which implements Direct3D on top of Vulkan, and an important component of SteamOS.

▲

pjmlp 2 hours ago | parent | prev | next [-]

With game studios using Windows + Visual Studio, what a win!

	▲	flohofwoe 2 hours ago \| parent [-]
		VS2026 is actually quite decent again (surprising tbh), but the good thing today is that a lot more UI apps support Linux than 20 years ago. E.g. I would just give my artists a Linux desktop running Blender, and generally test on a connected min-spec PC (also for the devs even if they are working on a high-end Windows PC in VStudio). E.g. similar to console-development, the low-end PC is essentially the devkit. Also has the advantage that there will be no performance surprises on release when most gamers try to run the game on their laptop or RTX2060 ;) One thing I would definitely do is to replace MSVC with Clang, MSVC is just too far behind and it almost looks like MS abandondend it.

▲

LtWorf 2 hours ago | parent | prev [-]

Try running a directx 5 game and let me know how it goes.

	▲	flohofwoe 2 hours ago \| parent [-]
		29 years is a lot more than the 5.. years time window I'm talking about. 3 decades is basically "I will need an emulator for that" ;) But I think even a lot of D3D9 games should still work, and that's 2002 stuff. Also try running a 1997 Linux game binary on a modern Linux distro without recompiling, I doubt that's works all that well...