Source Filmmaker: How to Run on Linux or Proton

Instead, it works more like Team Fortress 2 in a library sense and some other Free to Play games.

Simply, install it like how you would for a first time. Go to the store page and install it.

So, assumingly your using the most up-to-date Proton, which at the making of this guide, is Proton 7.
Set your launch options.

PROTON_USE_WINED3D=1 %command%

Now, it should work just fine. Install your SFM assets and you should be good to go!

Then, go to your SFM’s properties window,
click on the Compatibility tab on the left of the window.
Click the checkbox that says “Force the usage of a compatibility tool” and click on Proton 4.11-13.

You will not need any launch options. Have fun!

Although, this time you will need a specific tool called ProtonTricks[github.com].

When you click on Source Filmmaker, it will warn you that you are using a 64-bit Wine-prefix, it’s safe to ignore and it does not matter in this case, and you’re only installing more fonts.

It will bring up a window thats named “Winetricks – choose a wineprefix”
By default it should be on “Select the default wineprefix,” if not, click on it
and then click OK to proceed.
It should bring up another window asking what you would like to do with the wineprefix, click on “Install a font” and proceed.

From there, click on “allfonts” and let it do it’s thing, it may pop up windows several times warning you of the same 64-bit Wine-prefix warning message, it is safe to ignore but do click OK to let it proceed.

But, before you go on about your daily life, you may need more launch options by some chance.

I’d recommend you research the Proton Github Page to see some popular commands like

PROTON_FORCE_LARGE_ADDRESS_AWARE

PROTON_EXAMPLECOMMAND=1 PROTONEXAMPLE-COMMAND=1 SystemExample=1 SystemExample=1 %command% -example -example2

Proton Commands/System Commands/Steam Commands %command% Game Options

Now, you are done with the guide and your SFM is ready for your creativity, have fun!