Editing Wine (software) (section)

===Proton===
{{Main|Proton (software)}}

On 21 August 2018, [[Valve Corporation|Valve]] announced a new variation of Wine, named Proton, designed to integrate with the Linux version of the company's [[Steam (service)|Steam]] software (including Steam installations built into their Linux-based [[SteamOS]] operating system and [[Steam Machine (hardware platform)|Steam Machine]] computers).<ref name="proton_announcement">{{cite web |title=Steam for Linux :: Introducing a new version of Steam Play |date=21 August 2018 |url=https://steamcommunity.com/games/221410/announcements/detail/1696055855739350561 |publisher=Valve |access-date=22 August 2018 |archive-date=22 August 2018 |archive-url=https://web.archive.org/web/20180822162847/https://steamcommunity.com/games/221410/announcements/detail/1696055855739350561 |url-status=live }}</ref> Valve's goal for Proton is to enable Steam users on Linux to play games which lack a native Linux port (particularly back-catalog games), and ultimately, through integration with Steam as well as improvements to game support relative to mainline Wine, to give users "the same simple plug-and-play experience" that they would get if they were playing the game natively on Linux.<ref name="proton_announcement"/> Proton entered public beta immediately upon being announced.<ref name="proton_announcement"/>

Valve had already been collaborating with CodeWeavers since 2016 to develop improvements to Wine's gaming performance, some of which have been merged to the upstream Wine project.<ref name="proton_announcement"/> Some of the specific improvements incorporated into Proton include [[Vulkan (API)|Vulkan]]-based Direct3D 9, 10, 11, and 12 implementations via [[Direct3D#Wrappers|vkd3d]],<ref>{{cite web |title=vkd3d.git project summary |url=https://source.winehq.org/git/vkd3d.git/ |publisher=WineHQ Git |access-date=22 August 2018 |archive-date=2 April 2019 |archive-url=https://web.archive.org/web/20190402174831/https://source.winehq.org/git/vkd3d.git/ |url-status=live }}</ref> [[DXVK]],<ref>{{cite web |title=DXVK GitHub repository |url=https://github.com/doitsujin/dxvk |publisher=GitHub |access-date=22 August 2018 |archive-date=26 May 2020 |archive-url=https://web.archive.org/web/20200526133505/https://github.com/doitsujin/dxvk |url-status=live }}</ref> and [[Direct3D#Wrappers|D9VK]]<ref>{{cite web |title=D9VK GitHub repository |url=https://github.com/Joshua-Ashton/d9vk |publisher=GitHub |access-date=6 October 2019 |archive-date=2 March 2019 |archive-url=https://web.archive.org/web/20190302052040/https://github.com/Joshua-Ashton/d9vk |url-status=live }}</ref> multi-threaded performance improvements via esync,<ref>{{cite web |title=GitHub: README for esync |url=https://github.com/zfigura/wine/blob/esync/README.esync |publisher=GitHub |access-date=22 August 2018 |archive-date=19 September 2018 |archive-url=https://web.archive.org/web/20180919104439/https://github.com/zfigura/wine/blob/esync/README.esync |url-status=live }}</ref> improved handling of fullscreen games, and better automatic game controller hardware support.<ref name="proton_announcement"/>

Proton is fully open-source and available via GitHub.<ref>{{cite web |title=Proton GitHub repository |url=https://github.com/ValveSoftware/Proton/ |publisher=GitHub |access-date=22 August 2018 |archive-date=22 August 2018 |archive-url=https://web.archive.org/web/20180822071640/https://github.com/ValveSoftware/Proton/ |url-status=live }}</ref>