Tag: linux

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I know most of you won’t care or see why this is of interest but I got another game, this time No Man’s Sky, working in (side-by-side) mode using [on Linux PC] 🤓

https://www.youtube.com/watch?v=_VGv_h097mI

Steam start parameters are a little bit different though, once ReShade was configured for Vulkan:

WINEDLLOVERRIDES="d3dcompiler_47=n;vulkan=n,b;vulkan-1=n,b"  gamescope -h 2160 -w 3840 -H 1080 -W 3840 --scaler stretch -f -e -- %command%

Apparently there is an open bug for ReShade and Vulkan via Proton but frankly I didn’t quite get the details – it just worked for me: https://github.com/kevinlekiller/reshade-steam-proton/issues/6 – YMMV.

As usual: Viture or XReal users can probably just press fullscreen after switching into SBS mode to watch this. Others may need an external player to sort it out – I sure love delivering to the absolute niche of the niche [of yet another niche] 🤷

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I know most of you won’t care or see why this is of interest but I got another game, that I like a lot, working in (side-by-side) mode yesterday using [on Linux PC] 🤓

https://www.youtube.com/watch?v=tWnFRPkomzQ

Steam start parameters are a little bit different though, once ReShade was configured for DirectX11: 

WINEDLLOVERRIDES="d3dcompiler_47=n;d3d11=n,b" gamescope -h 1080 -w 1920 -H 1080 -W 3840 --scaler stretch -f -e -- %command%

I’m considering to start an extra channel for the SBS stuff since this probably just annoys most people. In fact downvotes started to pile up but is it my fault that YT (or PeerTube for that matter) doesn’t support this in any sane way? I know about frame packed versions now but that only results in badly automated out of focus Anaglyph 3D videos nobody can enjoy.

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So bear with me if I mix something up, this is all news to me and I’m still flabbergasted. I got myself some XR glasses mostly for watching movies and perhaps some gaming on the Steam Deck a while ago.

Now I learned about “SBS” (Side-By-Side) mode like ~3 days ago, that the glasses support. I tried this with the game Elite Dangerous first, since this has an SBS mode built in too, and was mind blown. My current favourite time stink is Ace Combat though so I started digging.

Turns out there is this Reshade tool that would forcefully enable such a mode for basically any game with the right shader. Several exist but the first I found, “SuperDepth3D.fx”, seems to do the trick. Enabling it split the 1920×1024 in half with two slightly different view ports, one for each eye. There are many options to fine tune this and I’m still fiddling with this to find the perfect settings but results look great already.

My glasses do Full SBS though and have a resolution of 3840×1024. I read somewhere that wide-screen is possible with more DLL shenanigans with Ace Combat 7 too but I run the game on a Linux PC anyway, where we utilise a tool named “gamescope”. This allows basically to configure a virtual display for each game and override the game resolution in various ways. It also has a stretch option, which is exactly what I needed to get the “compressed” SBS view from 1920 to 3840, where the aspect ratio would fit again. BTW: This also has FSR built in so any upscaling looks good enough too. I’m not entirely sure but I think there’s a similar tool on Windows called “Virtual Deskop”?

Anyway, I already managed to get my head tracker working by mapping the output to a virtual gamepad on the look-around axes before. I also found a mod that enables a wider FOV. Imagine my stupid grinning when everything fell into place: Full SBS with head tracking, a more sane FOV and yes, I jumped all the hoops to get my HOTAS and rudder pedal of my old ViperPit working (which is a different story because my devices are so old that I had to upgrade em to USB before, which involved some Arduinos, programming and soldering). I guess that makes me a member of multiple niches at once 🤓

And since I’m aware that nobody can “see” what I’m talking about, without having XR glasses or a VR headset (or a DIY VR Box for smart phones) on their own, have also an Anaglyph 3D render. This requires just some old school two coloured (red and cyan) glasses often made of paper, that many people still have around somewhere, to get an idea.

The colour of the sky? It’s perfect. A deep dark blue.

Update: There is now video footage: https://www.youtube.com/watch?v=NckLvP1HBGw

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This content is licensed under a Creative Commons Attribution 4.0 International license.

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So… this is news to me, because I don’t have a headset, but I can set my Pro glasses into (side by side) mode by pressing the small button longer. Some games, like , can do this as well without fiddling around with Reshade. I didn’t really expect it but it just works. This way I even get 3D on foot, which is not supported for VR in Elite Dangerous Odyssey at all! Side by side Crosseye mode (right eye left, left eye right) though? Add some head tracking to the mix, which is totally possible, and I get a very nice VR-like experience even on foot in Elite Dangerous – and on Linux PC!

This is the SBS version that does REQUIRE VR/XR glasses and mebbe something like xr-video-player: https://www.youtube.com/watch?v=KEtRijojBx8

This is the MONO version that does NOT require VR/XR glasses: https://www.youtube.com/watch?v=bYPTk1vygM4

The FOV is somewhat cramped. No idea if this can be tweaked any further but I’ll fiddle with the settings on my next test. Mebbe this can be tweaked (or I use Desktop to zoom in somewhat).

Update: I got the aspect ratio somewhat under control. It’s not perfect but much better and an odd combination of window mode and resolution and upscaling, that somehow affects the HUD only but make no sense to me at all. At this point I think it’s simply a bug of Elite. It’s like the HUD doesn’t get the memo to scale up after the intro played. I’m also not sure if this is a side effect of gamescope but I can totally live with this result (though it does start to stutter somewhat on foot but recording this at the same time somewhat overwhelms my rig anyway). These are my gamescope settings with Steam:

SDL_VIDEODRIVER=x11 obs-gamecapture gamescope -h 1080 -w 3840 -H 1080 -W 3840 --max-scale 2 -f -e -- %command%

Max-scale is probably not needed but it was started with this so I won’t omit it now. The ingame settings are 1280×960 and windowed with _NO BORDER_. Every other mode broke the aspect ratio even more! That is also true for 1920×1024, which would have made _some_ sense to me at least, but this did also NOT work FOR ME. This results in a pixelated HUD which is worked around with upscaler INTERNAL or AMD CAS cranked to x2 – AMD FSR did NOT WORK. If someone could enlighten me on this: Bring it! YMMV.

Update2: Haha it works! https://www.reddit.com/r/EliteDangerous/comments/2o5j30/using_google_cardboard_or_equivalent_kit_as_a_vr/ had a lead: It suggests to double the vertical resolution to get a proper aspect ratio with SBS and shrink the resulting window again.

That’s easy with gamescope:

> gamescope -h 2160 -w 3840 -H 1080 -W 3840 –scaler stretch

e voila, perfect aspect ratio. Wonder if my GPU manages to keep this up though. May have to throw FSR into the mix.

🔥 Hell Yes! added UDP support for native under and I can finally talk about it 🤓 Yes! Yes! 🚀

🎥 I was to happy about it that I even did a recording while I had a bad cold and was hoarse just to show it off: https://makertube.net/w/wo4zAJiTFLeg8t2o93MLpL or https://www.youtube.com/watch?v=rgOkGwMShT0

✍ Took a while but it’s now in the open beta for 7.50 https://steamcommunity.com/games/392160/announcements/detail/4485117301459255318

It’s great to see another company embracing open standards and care for their niche gamers too ❤️

It has been a while that I tried . With the new Tracker plugin (AI haha) for we get head tracking without annoying IR LEDs or reflecting stripes just by reading the webcam video feed. This is apparently fast enough to try without a dedicated nowadays. And all that on a PC. Took some fiddling but the concept still works. What a time to be alive.

Demo: https://makertube.net/w/groS1wpAhP8XYE75vJwX32

HowTo: https://simpit.dev/systems/opentrack/

So, Timelines released today. Bagged it, of course. Don’t even really know what’s coming but the X series are something I enjoy since X: Beyond The Frontier in 1999. Kinda rad that a company that old managed to stay in business and true to their very own franchise.

Oh and also native for PC, my daily (and only) system for .

I could ramble on why X4 is a great Space Pew Pew game but others can do that much better. Like ObsidianAnt for example: https://www.youtube.com/watch?v=YCcaA1FAuAg

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So didn’t show my GPU on when started via . I have an and all the (#ROCr / ) stuff installed. It only listed the iGPU by Intel on startup:

[---] OpenCL: Intel GPU 0: Intel(R) UHD Graphics 630 (driver version 23.35.27191.9, device version OpenCL 3.0 NEO, 25561MB, 2556>
[---] libc:  version 2.37

This works however fine when I run boinc manually as user (or clinfo for the matter), and not via systemctl start boinc-client, so I guessed it’s some permission issue. journalctl had the context I was looking for and threw this in the middle of the boinc-client startup:

audit[305157]: AVC avc:  denied  { read write } for  pid=305157 comm="boinc" name="kfd" dev="devtmpfs" ino=532 scontext=system_u:system_r:boinc_t:s0 tcontext=system_u:object_r:hsa_device_t:s0 tclass=chr_file permissive=0

This is SELinux’s charming way of telling me that it blocked read and write access to /dev/kfd (the main compute interface shared by all GPUs, according to the ROCm manual) for the boinc process. Nice. So what most users do now is grumble and disable SELinux, which is kinda a bad idea. The more advanced user does this and calls it a day:

sudo ausearch -c 'boinc' --raw | audit2allow -M boinc
sudo semodule -i boinc.pp

This basically prepares an override policy based on any rejected boinc activity that looks in my case like this:

module boinc 1.0;

require {
	type hsa_device_t;
	type random_device_t;
	type boinc_t;
	class chr_file { ioctl map open read write };
}

#============= boinc_t ==============
allow boinc_t hsa_device_t:chr_file { ioctl map open read write };
allow boinc_t random_device_t:chr_file write;

Not today though. It left me befuddled with the following output:

libsemanage.semanage_direct_install_info: Overriding boinc module at lower priority 100 with module at priority 400.
Failed to resolve typeattributeset statement at /var/lib/selinux/targeted/tmp/modules/400/boinc/cil:3
Failed to resolve AST
semodule:  Failed!

…and I have no idea why. I also found nothing on Google Search. So to not be DenverCoder9 (https://xkcd.com/979/) in the future here is what I found out so far:

sudo cat /var/lib/selinux/targeted/tmp/modules/400/boinc/cil | bunzip2 
(typeattributeset cil_gen_require hsa_device_t)
(typeattributeset cil_gen_require random_device_t)
(typeattributeset cil_gen_require boinc_t)
(allow boinc_t hsa_device_t (chr_file (ioctl map open read write)))
(allow boinc_t random_device_t (chr_file (write)))

Apparently it can’t resolve the required typeattributeset boinc_t – which is kinda odd as it exists (see sudo semodule -X 100 --cil -E boinc and the resulting cil file). Frankly this is where SELinux lost me too. I found the man page for boinc_selinux, which is not really known on my Fedora system here, so I may be missing something. It suggests to enable permissive mode for boinc_t (instead of dropping SELinux altogether):

Note: semanage permissive -a boinc_t

can be used to make the process type boinc_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

https://linux.die.net/man/8/boinc_selinux

And sure enough on the next restart my AMD GPU became available:

[---] OpenCL: AMD/ATI GPU 0: AMD Radeon RX 6700 XT (driver version 3558.0 (HSA1.1,LC), device version OpenCL 2.0, 12272MB, 12272>
[---] OpenCL: Intel GPU 0: Intel(R) UHD Graphics 630 (driver version 23.35.27191.9, device version OpenCL 3.0 NEO, 25561MB, 2556>
[---] libc:  version 2.37

Happy numbers crunching. Mebbe some fix for SELinux crosses my path in the future so I can update this with the proper solution.

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I just set https://simpit.dev/ live.

Primary Buffer Panel – The On A PC For More Immersion In Pew Pew

A glorified joystick controller with an LCD (‘MFD’) and plenty of RGB.

Best viewed WITH an ad-blocker (thanks @stefan)

I’m kinda blind by now after hacking away on this page for days so I’d appreciate feedback.

Especially if something is broken.