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Valve have announced the release of Steam Play Proton 4.11, this is a pretty exciting one and it's pretty huge overall.

Firstly, it was re-based on top of Wine 4.11. So it brings thousands of improvements over, considering that's quite a version bump. Additionally, 154 patches from Proton were upstreamed directly to Wine!

The next exciting bit is that Valve are now funding D9VK (and have been since June according to developer Joshua Ashton), along with shipping it in Proton as part of this update. This Vulkan-based Direct3D 9 renderer is still experimental, so it's not enabled by default as you need to use the "PROTON_USE_D9VK" setting.

Additionally DXVK was updated to 1.3, your current display refresh rate is now actually reported to games, there's more fixes to window management and mouse cursor focus, VR users rejoice as there's support for the latest OpenVR SDKs, FAudio was updated to 19.07, GameMaker titles got a fix for networking and there's a joystick input lag fix and rumble support for certain games.

Possibly just as exciting, is that a bunch of Wine "modules" are now built as Windows PE files instead of Linux libraries. Eventually, this will help some DRM and anti-cheat systems as work progresses on it. Fantastic to see work on that being done!

Is that all? Oh no—there's more.

When Valve identified issues with multi-threaded games as Proton development was being ramped up, CodeWeavers worked on developing the "esync" patchset to address it. It worked well but it came with multiple issues. As Valve said it needed a "special setup" and can cause "file descriptor exhaustion problems in event-hungry applications", they also think it "results in extraneous spinning in the kernel". So, they're working on what they're calling fsync and suggesting changes to accommodate it in the Linux Kernel.

Valve also showed off some proof-of-concept glibc patches, to expose the Kernel patches as part of the pthread library to get it all working. They said that if it's all accepted, "we would achieve efficiency gains by adopting it in native massively-threaded applications such as Steam and the Source 2 engine". You can read more about all that work in this Steam forum post and fsync testing instructions here.

As always, the Proton changelog for Steam Play can be found here.

Article taken from GamingOnLinux.com.
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74 comments
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Comandante Ñoñardo 1 August 2019 at 1:23 am UTC
Murdered Soul Suspect in DX11 still crash when entering the cemetery.

image

In DX9 mode, the game works perfect with d9vk... and with 60fps, unlike the dx11 mode that is capped at 30fps.
orochi_kyo 1 August 2019 at 1:43 am UTC
jarhead_hAt this point I genuinely cannot understand why there would be any Linux gamers left who aren't on Steam. Don't talk to me about DRM, because Valve has done more for Linux's future this past year I think than any other company I can name. They are using resources on us cannot be justified with the current userbase and I believe that deserves reciprocity. I'm not saying you have to re-buy your GOG library over on Steam, but you should really start buying stuff there if you aren't already.

You keep saying that you want to reward developers that support Linux, well I'd say that Valve counts.

One can not understand reasons of Valve haters, dont even try it. It is so easy for Ubisoft to jump into the open source wagon (Blender) after the years of pain to make Open software to reach professional paid software level. Now Ubisoft are the cool guys, as Epic giving money to these poor souls.
Steam was here when even Epic said PC gaming was dead, was there when Ubisoft Ceo said all PC gamers are pirates. People tends to forget this on purpose, part of the cherry picking reasoning kids have these days.
PC gamers are ungrateful but when it comes to Linux gaming we should have a real different attitude towards Steam.
mylka 1 August 2019 at 2:07 am UTC
Comandante ÑoñardoMurdered Soul Suspect in DX11 still crash when entering the cemetery.

image

In DX9 mode, the game works perfect with d9vk... and with 60fps, unlike the dx11 mode that is capped at 30fps.

seems to be an nvidia problem not DXVK, or proton
https://www.protondb.com/app/233290
AMD only caps 30fps in cutscenes and it didnt froze at cemetery

https://www.youtube.com/watch?v=ZT1Tsm0p_oo
Comandante Ñoñardo 1 August 2019 at 2:28 am UTC
Deadfall Adventures via forced PROTON 4.11-1 and D9Vk WORKS WITH MORE PERFORMANCE THAN NATIVE VERSION.
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Comandante Ñoñardo 1 August 2019 at 4:26 am UTC
Offtopic: I just got the Steam Hardware Survey popup!
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anarchist_tomato 1 August 2019 at 4:40 am UTC
Mouse focus issues? Does that mean they've fixed the invisible wall bug? (That to me is the biggest bug we still have).
Trias 1 August 2019 at 10:13 am UTC
ShmerlAnd regarding DRM - it's not actually hard for Valve to start offering DRM-free options, like other stores do. They just don't see it as important.

Just for information – it is possible to publish a DRM-free game on Steam. For example, Space Rangers HD: A War Apart (a very good game, by the way) is DRM-free, as stated in a special notification - “Incorporates 3rd-party DRM: DRM Free!”. Even if this option is not well-advertised, it is still possible…
tonyrh 1 August 2019 at 10:44 am UTC
ShmerlBecause expertise in Vulkan development is going to increase going forward (thanks in part to Stadia).

Why would "expertise in Vulkan development" increase? The whole point of Proton, from a developer's pov, is that you do not need to move away from DirectX to support another platform...
Eike 1 August 2019 at 10:52 am UTC
tonyrh
ShmerlBecause expertise in Vulkan development is going to increase going forward (thanks in part to Stadia).

Why would "expertise in Vulkan development" increase? The whole point of Proton, from a developer's pov, is that you do not need to move away from DirectX to support another platform...

The announcement of Proton had the plea to developers to use Proton Vulkan...


Last edited by Eike at 1 August 2019 at 11:25 am UTC
tonyrh 1 August 2019 at 11:22 am UTC
EikeThe announcement of Proton had the plea to developers to use Proton...

I don't understand what this means.
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