The versioning scheme refers to the upstream Wine version it's based on, with an appended patch number. Valve has released seven major versions of Proton. The site is inspired by the WineHQ AppDB, which also collects and displays crowdsourced compatibility reports and uses a similar rating system. ProtonDB is an unofficial community website that collects and displays crowdsourced data describing the compatibility of a given title with Proton, on a rating scale from ' Borked' to 'Platinum'. The user can optionally force use of Proton for a specific title, even if a Linux version already exists. In addition to the official whitelist, many other Windows games are reportedly compatible, albeit unofficially, with Proton. Compatibility īeing a fork of Wine, Proton maintains very similar compatibility with Windows applications as its upstream counterpart. A separate library known as D9VK handled Direct3D 9 support until it was merged into DXVK in December 2019. These include Direct3D-to- Vulkan translation layers, namely DXVK for Direct3D 9, 10 and 11, and VKD3D-Proton for Direct3D 12. Proton incorporates several libraries that improve 3D performance. These include Doom (2016), Quake, and Final Fantasy VI. Upon release, Valve announced a whitelist of 27 games that were tested and certified to perform like their native Windows counterparts without requiring end-user tweaking.
Proton was initially released on 21 August 2018.
