Category: LinuxGaming

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I didn’t use my Steam Link for some time and was kinda surprised by the new UI in Big Picture Mode. And also very unhappy because it was a stutter feast with buffer artefacts all over the place. Once I could get a game running it was butter though so something was up with the streaming mode of the UI. I’ve no really an idea what’s going on there but this was always a problematic thing with my AMD GPU under Gnome using Wayland when it comes to streaming and remote play. I ticked off the basics and disabled the blocklist for unknown GPUs, made sure that AMD hardware acceleration was enabled for the host in the Big Picture setting and even tried to launch it with the old big picture mode but no dice:

steam pipewire -pipewire-dmabuf -oldbigpicture

After reading around a lot on the bugtracker at https://github.com/ValveSoftware I eventually learned that the hardware acceleration for remote play is usually done with VAAPI and that there is debug information in ~/.local/share/Steam/logs/streaming_log.txt and sure enough here it was:

ffmpeg verbose: libva: VA-API version 1.16.0
ffmpeg verbose: libva: User environment variable requested driver 'radeonsi'
ffmpeg verbose: libva: Trying to open /usr/lib/dri/radeonsi_drv_video.so
ffmpeg verbose: libva: Found init function __vaDriverInit_1_16
ffmpeg verbose: libva: va_openDriver() returns 0
ffmpeg verbose: Initialised VAAPI connection: version 1.16
ffmpeg verbose: VAAPI driver: Mesa Gallium driver 22.3.5 for AMD Radeon RX 6700 XT (navi22, LLVM 15.0.7, DRM 3.49, 6.1.11-200.fc37.x86_64).
ffmpeg verbose: Driver not found in known nonstandard list, using standard behaviour.
ffmpeg verbose: Input surface format is nv12.
ffmpeg verbose: Compatible profile VAProfileH264Main (6) is not supported by driver.
ffmpeg error: No usable encoding profile found.

So the profile was missing and a check with vainfo confirmed this:

vainfo --device /dev/dri/renderD128 --display drm
Trying display: drm
libva info: VA-API version 1.16.0
libva info: Trying to open /usr/lib64/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_16
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.16 (libva 2.16.0)
vainfo: Driver version: Mesa Gallium driver 22.3.5 for AMD Radeon RX 6700 XT (navi22, LLVM 15.0.7, DRM 3.49, 6.1.11-200.fc37.x86_64)
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            :	VAEntrypointVLD
      VAProfileMPEG2Main              :	VAEntrypointVLD
      VAProfileJPEGBaseline           :	VAEntrypointVLD
      VAProfileVP9Profile0            :	VAEntrypointVLD
      VAProfileVP9Profile2            :	VAEntrypointVLD
      VAProfileAV1Profile0            :	VAEntrypointVLD
      VAProfileNone                   :	VAEntrypointVideoProc

This was the moment when my brain did pull off one of it’s tricks and remembered me about the story about Fedora _disabling_ hardware acceleration for H264 due to proprietary concerns some months ago and yes I did recently upgrade to Fedora 37 🤯

Thankfully the community stepped in already and fixed mesa drivers are only one dnf install away on rpmfusion, so there is no need to recompile this with h264 support (and some others) manually. There is a caveat though because the swap command would happily delete the needed 32bit versions for Steam and only install the 64bit version of the swapped package. Keeping this in mind the required commands are basically this (and if this breaks your system I do not want to hear about it – use your brain!):

dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
dnf update
dnf swap mesa-va-drivers mesa-va-drivers-freeworld
dnf install mesa-va-drivers-freeworld.i686

And sure enough vainfo now has a way more complete list – including the previous missing VAProfileH264Main profile:

libva info: VA-API version 1.16.0
libva info: Trying to open /usr/lib64/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_16
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.16 (libva 2.16.0)
vainfo: Driver version: Mesa Gallium driver 22.3.5 for AMD Radeon RX 6700 XT (navi22, LLVM 15.0.7, DRM 3.49, 6.1.11-200.fc37.x86_64)
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            :	VAEntrypointVLD
      VAProfileMPEG2Main              :	VAEntrypointVLD
      VAProfileVC1Simple              :	VAEntrypointVLD
      VAProfileVC1Main                :	VAEntrypointVLD
      VAProfileVC1Advanced            :	VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:	VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:	VAEntrypointEncSlice
      VAProfileH264Main               :	VAEntrypointVLD
      VAProfileH264Main               :	VAEntrypointEncSlice
      VAProfileH264High               :	VAEntrypointVLD
      VAProfileH264High               :	VAEntrypointEncSlice
      VAProfileHEVCMain               :	VAEntrypointVLD
      VAProfileHEVCMain               :	VAEntrypointEncSlice
      VAProfileHEVCMain10             :	VAEntrypointVLD
      VAProfileHEVCMain10             :	VAEntrypointEncSlice
      VAProfileJPEGBaseline           :	VAEntrypointVLD
      VAProfileVP9Profile0            :	VAEntrypointVLD
      VAProfileVP9Profile2            :	VAEntrypointVLD
      VAProfileAV1Profile0            :	VAEntrypointVLD
      VAProfileNone                   :	VAEntrypointVideoProc

And sure enough the Steam Link started working again. Somewhat. Now I have issues that some games don’t get captured or loose focus eventually but that I’ll debug another day 😩

Video: Starting Steamworld Dig 2 and showing system overview

Linux Gaming in 2023 is easy. Remote Play… not so much.

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I usually play on Linux PC. I switched to Proton because I was eager to see some upcoming changes, like support, on the public_beta branch. And while this works[1] I was once more flabbergasted how complicated it is to set my desired display resolution of 5760×1200. I’m using a multihead setup with several displays and as usual the game engine would not let me _simply_ set that. Even in windowed mode (I mean I get that this won’t work with fullscreen).

There are several ways to work around this, especially with Proton, but I was looking for the prefs file I know from Linux. I found it in the end in the file compatdata/1781750/pfx/user.reg (that’s like the Windows registry but as plain file read by Wine) where the values are stored as dword under [Software\\StarGoat\\FlyDangerous]. In hex. 

"Screenmanager Resolution Height_h2627697771"=dword:000004b0
"Screenmanager Resolution Width_h182942802"=dword:00001680
"Screenmanager Resolution Use Native_h1405027254"=dword:00000000

So 0780 and 04b0 are in the end 5760 and 1200. And sure enough, on the next game start I get _my_ desired resolution:

Sadly when I change settings in the game this gets overwritten again – so keep a backup around and drop it in again. This may even be added to a script – let’s see how long until this gets on my nerves and I automate that.

For the interested: This is how the same thing looks on the native version in the file ~/.config/unity3d/StarGoat/FlyDangerous/prefs

<pref name="Screenmanager Resolution Height" type="int">1200</pref>
<pref name="Screenmanager Resolution Width" type="int">5760</pref>
<pref name="Screenmanager Resolution Use Native" type="int">0</pref>

Why games|engines in 2023 still seem to have ideas about screen layouts is frankly beyond me.

Update: really eases the pain here as well. See also https://SimPit.dev/games/fly-dangerous/ how to use that with Steam.

[1] Headtracker quick test recordings: https://www.youtube.com/watch?v=13L0GlQyf_Q / https://tube.tchncs.de/w/fTYSUc9fTBmnTLHp2fpW4n

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Working on a loosely based on NZ-43 (14C). It’s approximately 12m long 🙂

First time I’m trying my luck with a vessel and not a building. The curving is difficult to realise in tho.

It started life in the old Java version of the game because the new Unity version has no posters yet. I had to segment the plan of the cog (carved in a very bad resolution from a PDF) into several in-game posters that had to be aligned in-game again to get the proper measurements.

After that I moved the blueprint of the frame over to the new version and started putting planks on it. A cumbersome process during which I learned a lot. I’ll probably make another and more improved hull based on the gathered know how.

I also fell straight into another “not yet implemented” trap. RisingWorld has a flip command to mirror an object and I kinda assumed this would work with blueprints too. It does not. And I was really not looking forward to put plank on both sides of the frame.

Luckily most of the leg work to read the binary blueprints was done by @paulevs before who released https://github.com/paulevsGitch/BlueLib under the MIT license. It has been a while that I touched Java but I could come up with some code of my own that would flip the planks only (I used rounded cubes for the planks exclusively) making use of this lib and the very first try at it looked promising already.

Here is the source I came up with in case you wonder:

package blueprint.flip.maybe;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;

import paulevs.bluelib.blueprint.Blueprint;
import paulevs.bluelib.blueprint.BlueprintIO;
import paulevs.bluelib.blueprint.element.BlueprintElement;
import paulevs.bluelib.blueprint.element.BlueprintElementType;

public class App {
    public static BlueprintElement cloneBlueprintElement(BlueprintElement el) {
        BlueprintElement element = new BlueprintElement(el.type);
        element.setPosition(el.posX, el.posY, el.posZ);
        element.setSize(el.sizeX, el.sizeY, el.sizeZ);
        element.rgba = el.rgba;
        element.setRotation(el.rotX, el.rotY, el.rotZ, el.rotW);
        element.setSurfaceOffset(el.surfaceOffsetX, el.surfaceOffsetY, el.surfaceOffsetZ);
        element.texture = el.texture;
        return element;
    }

    public static Blueprint readBlueprint(String pathname) {
        File file = new File(pathname);
        Blueprint blueprint = null;
        try {
            blueprint = BlueprintIO.read(file);
        }
        catch (IOException exception) {
            exception.printStackTrace();
        }

        return blueprint;
    }

    public static void main(String[] args) {
        final Blueprint blueprint = App.readBlueprint("/path/to/Blueprint-flip-maybe/cog_base_split_1670726695.blueprint");
        System.out.println("Opened " + blueprint.name);
        System.out.println("Blueprint has " + blueprint.elements.size() + " elements");

        ArrayList<BlueprintElement> elements = new ArrayList<BlueprintElement>();

        blueprint.elements.forEach(element -> {
            if(element.type == BlueprintElementType.ROUNDED_BLOCK) {
                System.out.println("T: " + BlueprintElementType.getElementName(element.type));
                System.out.println("pX: " + element.posX + "pY: " + element.posY + "pZ: " + element.posZ + " rX: " + element.rotX + "rY: " + element.rotY + "rZ: " + element.rotZ);
                BlueprintElement el = App.cloneBlueprintElement(element);
                el.posX = el.posX * -1;
                el.rotY = el.rotY * -1;
                el.rotZ = el.rotZ * -1;
                System.out.println("pX: " + el.posX + "pY: " + el.posY + "pZ: " + el.posZ + " rX: " + el.rotX + "rY: " + el.rotY + "rZ: " + el.rotZ);
                elements.add(el);
            }
        });

        elements.forEach(element -> {
            blueprint.elements.add(element);
        });

        blueprint.name += "_flipped_X";

        File outputFile = new File("/path/to/Blueprint-flip-maybe/" + blueprint.name + ".blueprint");
        try {
            BlueprintIO.write(blueprint, outputFile);
        }
        catch (IOException exception) {
            exception.printStackTrace();
        }
    }
}

I’m kinda happy with the result. This Lib also allows me to change the texture of the elements so I don’t have to worry how the used texture during the construction may look in the end.

Now onwards to improve the curves. I really wish for a bend mode where the beginning would snap on to an existing object and the opposite plane could be moved around individually.

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Bagged on GoG today and had a blast. Needed some fiddling to get my X52 Pro up and running since the game only supports _one_ Gamepad but that’s nothing that would stop my 😂

Video: Flight tutorial snippets from Rebel Galaxy Outlaw played on Linux PC

Update: I found _way later_ that there is a switch in the launcher to enable joystick support (which brings up my X52 just fiine). What a strange design decision.

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Fly Dangerous on Steam by Jay FaulknerJay Faulkner (store.steampowered.com)
Extremely high skill-ceiling 6dof flight racing in a variety of environments with leaderboards, multiplayer and VR support

https://store.steampowered.com/app/1781750/Fly_Dangerous/ released today as early access. It’s free, fast, opensource and has . The flight model is inspired by games like (Newtonian flight model). Oh and it has . o7

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Fly Dangerous 5.0 was released and it is packed with new features like reflections on the ship, Steam leaderboards and ghosts! So you can basically race against yourself or others from the leaderboards!

As usual I gave it a spin and had a blast.

First things first though. The Linux version defaults to OpenGL and this resulted in like 25 FPS for me and the input of my X52 Pro (mapped as XBOX controller) was so laggy that I could sip coffee during each course correction. This was when I remembered the magic parameter -force-vulkan from other Unity games and from here it was smooth sailing. Eventually I ended up with the game start options obs-gamecapture for recording, mangohud for some FPS info and -force-vulkan for… well, FPS.

obs-gamecapture mangohud %command% -force-vulkan

As usual YMMV.

The flight mechanics changed a little bit and @jayleefaulkner explains this in great detail in the video Alpha 7: https://www.youtube.com/watch?v=I2sn26HVY7o so I’m having a learning curve ahead of me… again!

Anyway, I’m not doing too bad after some rounds. Only issue left is that I can not disable the flight assist for some reasons. Probably a bad binding but I was eager to play so I went with it.

Fly Dangerous (on Linux PC) – with Vulkan

Oh and did I mention that this little gem is still for free and even opensource?

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Behind the scenes recording so you get the idea of the setup followed by some Star Citizen gameplay:

DIY headtracker and Simpit and Star Citizen gameplay (on Linux PC)

In use:

* A Linux PC
* A DIY Headtracker
* A DIY Joystick “Primary Buffer Panel“
* A X52 Pro HOTAS
* 3 Cameras + Recording Software
* An AMD RX5600XT in tears
* …a Beko learning How To Fly in SC xD

So you _still_ think you can’t space pew pew on Linux PC? Think again. I do it all the time: https://beko.famkos.net/2021/10/16/space-pew-pew-on-linux-pc/

Updated: This content is obsolete. Two years later I rebuilt the cardboard version with something more sturdy and raised a dedicated project website describing the builds: SimPit.dev

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I sure am playing a lot of space pew pew over the last months. Took a lot of screenshots too and it’s kinda hard not to drown my timeline with screenshots every day. Today I sifted through the pile and found a bunch I’d like to share (some again) so here is a little gallery of (mostly) space simulation games I play on my Linux PC. And I’ll keep making that point until I can browse the web without getting daily reminders by random strangers claiming that gaming on Linux PC is not possible. Cuz it is.

Star Citizen

Added on 5th January 2022 and played with whatever Lutris thinks best. I really was going to hold out on Star Citizen a little longer but I got it as a gift to my birthday. My GPU is definitely at it’s limit here. Will probably have to give it some more time. I mean it’s Alpha and all but hey, it _does_ work.

Elite Dangerous

This I play mostly under Proton with the Primary Buffer Panel whenever possible. It’s just the most fun this way (kids love it too).

 

X Games, mostly X4 and X3: Rebirth

The more recent X series have native Linux builds but work also perfectly fine with Wine.

 

Slug Throwers: Diaspora: Shattered Armistice and House of the Dying Sun

Both run via Lutris and with Proton-GE and usually with my DIY Headtracker.

 

Relaxing ones: No Man’s Sky, Fly Dangerous and… FlightGear (yeah, not space, I know – there’s a spaceship MOD tho :P)

FlightGear runs native on Linux and Fly Dangerous does have a native Linux build but due to an issue with terrain generation being single threaded I use Proton for this one too until this is solved. No Man’s Sky runs perfectly with Proton.

I play all of the above with my X52 Pro H.O.T.A.S. and some with my DIY headtracker stretched over three displays in a so called multihead setup. Let me know if you’ve any questions how this can be set up.

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A new alpha version of Fly Dangerous was released by the amazing @jayleefaulkner over at https://jukibom.itch.io/fly-dangerous introducing multiplayer! together!

Find the dev vlog at https://www.youtube.com/watch?v=UlAslpCJOyI

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I somehow never finished this little gem and since I feel somewhat nostalgic today decided to give it another spin. Interestingly this game was ported to various systems including Mac and Linux in 2013 premiering as part of the Humble Double Fine Bundle. This is probably also where I picked it up.

Anyway, uploading this will take some time but you can watch the partially muted recording elsewhere. Won’t upload it here thanks to ridiculous copyright claims.