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By Mr. Doomguy
Ho! Ho! Ho!
We have approached the end of 2019 and this month has left some interesting things going on around the Linux Gaming community.
Mesa 19.3 release and new features in the upcoming 20.0 version
As predicted, Mesa 19.3 has been released in early December which marks the 1st stable release to include Valve's shader compiler for AMD called ACO, however it is not enabled by default and users are required to run with RADV_PERFTEST=aco to take advantage of it, of course on Steam ya need to put RADV_PERFTEST=aco %command% into Launch options. As a reminder, this is meant for AMD only running on GCN architecture or newer which halves the compiling time making the game less suspectible to stuttering and increase the frame rate as a bonus. Besides that it provides a support for Navi 14 based GPUs (Such as RX 5500 XT), Intel Tiger Lake support, Zink driver (OpenGL To Vulkan driver, currently supports OpenGL 2.1) which is currently in experimental state and new Vulkan extensions for both Radeon RadV and Intel ANV.
New features have been announced to appear in the upcoming Mesa 20.0 which will be released in February:
- Intel GPUs under Mesa will use Iris by default, a Gallium3D driver made by Intel themselves. Allowing you to take advantage of Gallium3D features such as the HUD and perhaps even Gallium3D Nine to run Direct3D 9 games under Wine without any translation to OpenGL, causing a boost to the frame rate.
- OpenGL 4.6 support for RadeonSI (Open source OpenGL driver for AMD) and replacing TGS route with NIR, which results in some slight frame rate boost.
- OpenGL Tesselation Support in Gallium3D's Software Rasterizer
- AMD R600 GPUs will receive NIR support
Linux 5.5 performance regression and AMDGPU's experimental GCN 1.0 support may be dropped
Currently we are receiving Release Candidates for the upcoming stable 5.5 Linux kernel and it seems that some performance regression has been found, according to the Phoronix article this is cause by the usage of AppArmor feature presented in the kernel and a second unknown issue. If you are using Debian or Ubuntu (including even flavours such as Xubuntu, Kubuntu etc.) then it must be disabled by adding apparmor=0 into the kernel parameter. Luckily other distros such as Fedora and perhaps even ArchLinux have their kernels compiled to not use it by default.
Now here's the bad news for any owner of AMD's graphics card that uses GCN 1.0 architecture, AMD might drop the experimental support for it under AMDGPU kernel driver due to the UVD video driver not being included and some occasional bugs due to lack of testing and any output from AMD themselves. Enabling the usage of AMDGPU kernel driver for GCN 1.0 required a manual change in the kernel parameter with radeon.si_support=0 radeon.cik_support=0 amdgpu.si_support=1 amdgpu.cik_support=1 (Not required for GCN 3 and newer, as it's enabled by default) but it provided not only a frame rate boost but also a Vulkan support for GPUs which uses this architecture, the worst part is that they are unlikely to release a firmware which provides UVD video driver, but may also drop SI support from AMDGPU entirely. Valve may not like that as in their Future Work list for ACO, GFX6 lists Radeon HD 7000 series along with Radeon 200 series (Specifically 240 and 250) to have it's support added.
Proton 4.11-11 release, D9VK merged with DXVK, Wine 5.0 reached into freeze mode
Speaking of Valve, they have recently released a 10th and 11th revision of Proton 4.11 which not only includes some fixes but also:
- Halo: Master Chief Collection is supported from the single player side, multiplayer mode uses Easy AntiCheat which Wine and Proton has yet to provide support for it (Unless EAC hasn't been updated).
- Adds a Interger Scaling Mode which can be toggled by running the game with WINE_FULLSCREEN_INTEGER_SCALING=1
- Updated FAudio to 19.12 and DXVK to 1.5
Now the DXVK 1.5 is special one here, as D9VK which is a fork of DXVK that translated Direct3D 9 games to Vulkan has been merged with it, so by default DXVK currently supports D3D9, D3D10 and D3D11.
From the Wine side, the Wine 5.0 development has reached into the freezing state, so for now we are getting release candidates (RC3 being the last release in this year!) which only includes bug fixes in order to be prepared for the stable release of it which may happen in February or March. This is rather important as Wine is used by Valve to create Proton, so once 5.0 gets a full stable release, then perhaps we will get Proton 5.0?
Life Is Strange 2 Linux release, some NVIDIA updates, leading Vulkan dev at Feral Interactive leaves
Folks at Feral Interactive has been busy this month and released the Linux port of Life Is Strange 2 which uses Vulkan by default, now for the bad news, their leading Vulkan dev Alex Smith has left the studio after 3 years and currently works at Sony with the PlayStation, luckily he mentioned that Feral still has some capable Vulkan devs ready to take over. Wonder if PlayStation 5 will use Vulkan?
Now time for some NVIDIA news, they have released a new update for their legacy 340 driver series in order to make them work on recent distros for the upcoming 2020 and currently GNOME (one of the big desktop environments) will provide a much easier GPU switch in the 3.36 release, whereas KDE Plasma is soon to follow.
The 2010s was a decade which showed some activity in terms of Linux gaming, starting from Valve providing Steam support for it in 2012 with other stores such as GOG, followed by a release of SteamOS and Steam Machine and later on this caused some companies who made only Mac ports to join in such as Feral Interactive, Aspyr Media, Virtual Programming etc. some of them made a huge progress and some of em didn't, but despite the failure of Steam Machines Valve still continues to this day to spend their time and money to make Linux more viable for gaming and even decided to use most of the open source middlewares such as SDL2, OpenAL, libavcodec, Vulkan and OpenGL in their newer games which most likely even reduced to cost of developing the game for specific platforms such as Windows, Mac, Linux, Android, iOS.
Other contributions which Valve made for Linux are as follows:
- Contributes their codes to SDL2, Vulkan, Mesa, Linux kernel
- Working together with Codeweavers on Proton and upstream the codes to Wine
- Open sourcing some of their projects such as OpenVR, GameNetworkingSockets, Proton, Fossilize
- Giving contracts to specific developers such as DXVK, Feral GameMode etc. to continue their work
Now let us remember that Linux Gaming wasn't born with Valve, but with Loki Software in late 90s and early 2000 which were responsible for using SDL and OpenAL which are still being used to this day, even in source ports of your favourite games.
The biggest question here is, what will await in 2020?
Previous Monthly Linux Gaming News
November 2019
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By Mr. Doomguy
Hello and welcome into a Monthly Tux Gaming News which I mention what was going on in this month around the Linux gaming community which you won't find in any mainstream gaming news.
Mesa 19.3 stable release delayed, further improvements en-route.
Mesa, an open source GPU driver library maintained by the community has it's 19.3 stable version delayed to early December as there are more bugs to fill in. This will be the 1st release which will contain Valve's own shader compiler that is meant to replace LLVM, which is commonly used for this stuff specially when they are complex, with ACO which is specifically made for AMD graphics cards only . The major difference between these two is that ACO takes much less time to compile the shaders and as a bonus provides a frame rate boost, however it currently only works under Vulkan and you must be using Radeon RX 300 series or newer from dedicated GPU whereas in case of APUs it's Bristol Ridge, Raven Ridge or newer. You can learn more information about this feature from their blog post, they have plans to provide support for HD 7000 series and OpenGL along with other shading stages according to this roadmap.
But that is not just it, Valve is revising their Secure Compile feature for Mesa's AMD Vulkan driver called RadV which will result in lower resource usage and avoid slower shader compile times reducing the stuttering even more and best of all, this gets backported into 19.3, so by combining that with ACO things will get even more interesting. However, ACO will not be enabled by default as it requires you to run the game with
RADV_PERFTEST=aco on Steam you need to use this in launch parameter right at the beginning
RADV_PERFTEST=aco %command%
Next major release of Mesa will happen in February 2020 which will hit 20.0 and the work has already started.
New AAA game Linux port from Feral Interactive + a major update for one of their older Linux ports
Feral Interactive was busy this year with porting Shadow Of The Tomb Raider into Linux and Mac. The Linux version uses Vulkan by default and it's based on the DIrect3D 12 version of the game instead of D3D 11, what is the result you ask and how does it compare to Windows? First of all, there's no ray tracing support which can be a bummer, but when it comes to performance compared to Windows version, according to this following benchmark video the difference between them is that the native Linux version is......about 2% slower. That is seriously impressive, however there has been some words that on AMD GPUs in conjunction with ACO the game actually runs faster than NVIDIA but so far no benchmark has been found to confirm this.
But this is not the only main thing that has been going on around from Feral, they've also updated their Linux port of Shadow of Modor by providing Vulkan support which currently is in beta and can be opted-in any time by choosing linux_vulkan_beta from Betas tab. As their older port uses OpenGL and was released in 2015 it had a worse performance compared to Windows as they were still new to porting games into Linux, after all, the company was primarily doing Mac ports since 1998 and started with Linux porting in 2014 with X-Com: Enemy Unknown. So, has this helped improving the performance? Considering how since 2016 where they've started playing around with Vulkan by choosing Mad Max i dare to say....
It's jawdropping!
The most interesting thing here is that this is not the only thing that got added, Feral also added an option to choose the Vulkan driver of your choice and change the FOV through their launcher.
Since Tomb Raider 2013 on Mac got a Metal support, perhaps that game will also receive the Vulkan treatment......or Deux Ex Mankind Divided? Actually, DX:MD seriously needs one.
Valve still being busy and awesome with Linux support as usual
Besides Mesa stuff, Valve has also been busy with their own stuff. They have activated VKD3D in their Proton 4.11-8 release which is Wine's own Direct3D 12 to Vulkan wrapper allowing you to play games which utilize D3D12, however be aware that this wrapper is still being worked on and speaking of Proton, the recent version that got hit at the end of this month is 4.11-9 which are just mostly bug fixes.
One thing thou that received a major change from Valve for Steam is the option to use Steam Linux Runtime as a Compatibility Tool. What does it do? Well basically it forces the game to use the libraries which were included with Steam, including 32 bit ones. This is a very useful option as there is a chance that a native Linux game will not work be it missing a library or 32 bit games not working (Gee, wonder what made them to do it in a 1st place), game developers can also take the advantage of it as well when providing a help for the user that uses a distro not supported by Steam which is Ubuntu LTS or anything based on it or even use it for testing purposes.
What else is there? Hmmmm....Oh, streaming option has been enabled on Steam for Linux, wonder what took em so long to do it.
What's next in the future?
Well after the release of Linux kernel 5.4, the next major version is still in the works and may end up in a freezing state soon, as mentioned previously Mesa 20.0 work has begun and finally perhaps things will get interesting once Ubuntu 20.04 hits in April 2020 which will be a Long Term Support one.
"What about Nouveau, the open source NVIDIA driver by the community?" you ask. Still in a poor shape from 900 series and no Vulkan driver of it's own. Hope NVIDIA actually does something about this.
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By Andytizer
Congratulations to the Lutris team, who announced on Patreon that they were granted $25,000 from the Epic MegaGrant. In their announcement:
Lutris is an open source gaming platform for Linux that installs and launches games without the hassle of setting up on Linux and without installing system libraries. Lutris includes Linux support for using platforms like GOG, Steam, Battle.net, Origin, Uplay and finally Epic Games Store, which is beginning to gain support on the platform.
Despite this generous grant to a Linux project, it is interesting that Epic Games Store has no announced plans to lauch a native Linux client.
What other noteworthy projects have been given grants by Epic? Should PCGamingWiki apply for an Epic MegaGrant?
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By Andytizer
GOG.com have begun their Halloween Sale, which will take place between now and November 4, 2pm UTC.
Use our affiliate link to help benefit the PCGamingWiki project.
Games of particular interest include:
Blair Witch (-25%) Layers of Fear 2 (-33%) Call of Cthulhu (-50%), Daymare: 1998 (-20%) DreadOut (-80%) Visage (-20%) Diablo + Hellfire (-15%) Blasphemous (-15%) Bloodstained: Ritual of the Night (-10%) ..and many more!
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By Andytizer
FreeSpace 2 is now completely FREE on GOG.com to claim until 27th September, 1pm UTC. Check out our FreeSpace 2 fixes article for information on the open source port FS2Open to run the game easily on modern machines.
Also check out GOG.com's huge Interstellar Sale with 85% off a multitude of space games.
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