They can rely on an open source project called Proton.
Comment on Epic Games Store will get a Linux version sometime "soon"
Fubarberry@sopuli.xyz 5 hours agoYes, I expect they’ll just make a Linux client and rely on UMU or some other open source project to actually get them to run.
I don’t expect them to meaningfully push the Linux platform forward as Valve has done.
dev_null@lemmy.ml 5 hours ago
Fubarberry@sopuli.xyz 5 hours ago
Proton is really meant to work through steam, UMU is meant to replicate how reliably games run through steam+proton without steam. There’s a reason that heroic and all the other game launchers are switching to UMU as the default for running games.
My basic understanding is that, in addition to proton, steam provides a set of Linux runtimes, to make sure that the converted system calls from proton always match up with the correct standardized runtimes on the Linux system, regardless of distro. They also provide winetricks/protontricks as needed for games. There’s also some system variables passed to tell proton/etc that the game is running through steam and has this setup. Finally steam distributes shader caches, which both improve performance, and bypass proprietary video codecs by replacing them with open source friendly video files.
UMU is basically replicating all of this except the shader/media distribution, hopefully allowing games to run as reliably outside of steam as they do inside of it.
cupcakezealot@piefed.blahaj.zone 5 hours ago
tim will probably whine that you have to add the ppa manually and “linux is blocking our store”.