MangoHud support

[luni3359]

I'm trying to run Minecraft with gamemode and mangohud but the sandbox isn't recognizing commands other than gamemode. I already enabled everything in Flatseal and it's still not recognizing them.

Sorry for the different language it just says that there's no such file or directory named mangohud. I also tried with prime-runx (my distro doesn't have prime-run so I made a bash alias named prime-runx)

[d-513]

prime-run is available in the flatpak. Gamemode is manually added aswell.
As far as I know, you only need to do something like this flatpak override --user --env=MANGOHUD=1 org.polymc.PolyMC to enable mangohud, but I will look into it

[luni3359]

I'm so dumb, I didn't realize that the prime-run script was already included, it works! But I couldn't get MangoHud to run at all. It seems like games running on OpenGL need mangohud to be run but with Vulkan MANGOHUD=1 alone works.

I have to run the official Minecraft Launcher like this for MangoHud to show up:
MANGOHUD_DLSYM=1 mangohud minecraft-launcher
as a whole my command looks like this:
prime-run gamemoderun MANGOHUD_DLSYM=1 mangohud minecraft-launcher

[d-513]

I'm so dumb, I didn't realize that the prime-run script was already included, it works! But I couldn't get MangoHud to run at all. It seems like games running on OpenGL need mangohud to be run but with Vulkan MANGOHUD=1 alone works.

I have to run the official Minecraft Launcher like this for MangoHud to show up:

MANGOHUD_DLSYM=1 mangohud minecraft-launcher

as a whole my command looks like this:

prime-run gamemoderun MANGOHUD_DLSYM=1 mangohud minecraft-launcher

Let me see what I can do about that. Does official launcher via flatpak work?

[luni3359]

I'm using the .deb from here, it installs the official Minecraft launcher. I'm not sure if Microsoft is supporting the flatpak in flathub, but right now it seems like it's not very reliable.

I'll test tomorrow and let you know how it goes.

[d-513]

any results?

[TheEvilSkeleton]

I might be wrong, but you might get MangoHud working if you can add the MangoHud flatpak as an extension. Similar to how you did with Gamescope:

org.polymc.PolyMC/org.polymc.PolyMC.yml

Lines 9 to 13 in c6dd5f5

	com.valvesoftware.Steam.Utility.gamescope:
	version: stable
	add-ld-path: lib
	no-autodownload: true
	directory: utils/gamescope

org.polymc.PolyMC/org.polymc.PolyMC.yml

Line 28 in c6dd5f5

- --env=PATH=/app/bin:/app/utils/gamescope/bin:/usr/bin

After a build with this support is published on Flathub, the user should be able to install the MangoHud flatpak by running flatpak run org.freedesktop.Platform.VulkanLayer.MangoHud, or by installing with GNOME Software (maybe Discover too?).

[sarahnya]

I had MangoHud working using org.freedesktop.Platform.VulkanLayer.MangoHud and the wrapper command /usr/lib/extensions/vulkan/MangoHud/bin/mangohud --dlsym before but it didn't work today. I noticed the polymc flatpak is using the kde platform, was it using that before? I think maybe switching platform broke compatability?~

[sarahnya]

oh no wait I just checked on a different computer and mangohud is still working with the polymc flatpak on that computer~

[d-513]

it always used kde platform

[luni3359]

Sorry in the end I didn't go anywhere testing because I couldn't figure how to do it properly. Flatpak's sandboxing was already making several characters in Japanese unreadable due to a bug with flatpak itself so to spare me more problems I started using the AppImage and now everything works.

[jn64]

How to get PolyMC + gamemode + MangoHud working

1. Install PolyMC and MangoHud via Flatpak:

   $ flatpak install org.polymc.PolyMC org.freedesktop.Platform.VulkanLayer.MangoHud

2. In PolyMC, set the wrapper command to: gamemoderun /usr/lib/extensions/vulkan/MangoHud/bin/mangohud --dlsym

3. In order to use your existing (unsandboxed) MangoHud config in ~/.config/MangoHud/, do:

   $ flatpak override --user --filesystem=xdg-config/MangoHud:ro org.polymc.PolyMC

   Alternatively you can use Flatseal and add xdg-config/MangoHud:ro under the Filesystem > Other files section of PolyMC.

That's all!

Notes

• Don't need to set the MANGOHUD or MANGOHUD_DLSYM env vars.
• Tested with PolyMC v1.3.0, MangoHud v0.6.7-1 on Fedora 35.
• Trans rights

[d-513]

@jn64 Thanks! I will add it to the readme