FidelityFX SuperResolution (FSR) support

[frostworx]

Got a request if I'll add FSR support.
Whenever there are custom proton builds ready with built-in FSR support, I'll add support for them
(if not already implemented)
and required configuration options which might be required to enable FSR.

Automatic support for openvr_fsr
should be possible as well I guess.

Haven't played with FSR yet, so any information which might help is welcome.

[frostworx]

copy/paste of another (wip & offline) stl wiki:

Wine FSR

Starting with version GloriousEggroll 6.13-GE1
it has FidelityFX SuperResolution (FSR) support built-in with the following options:

• WINE_FULLSCREEN_FSR (to actually enable the feature) and
• WINE_FULLSCREEN_FSR_STRENGTH (0-5, for sharpening, default 5)

stl offers both options in the Game Menu
and FSR can also be simply enabled by dragging the corresponding game into the FSR Steam Category

A Proton Version with FSR support needs to be selected separately manually (so it won't be changed automatically with enabling FSR).
Above or a newer GE version can be easily downloaded and installed as usual.

[frostworx]

copy/paste of another (wip & offline) stl wiki:

OpenVR-FSR

openvr_fs implements the FidelityFX SuperResolution (FSR)
into OpenVR.

It does not have a final release yet, so stl does not support automatic download is not (yet).
So for enabling it in stl it needs to be downloaded and extracted manually.
The extracted files

• openvr_api.dll
• openvr_mod.cfg

are expected in
~/.config/stl/downloads/openvr_fsr/

If enabling the config option USEOPENVRFSR, stl automates the openvr_fsr installation-instructions
in case it finds a openvr_api.dll somewhere in the game dir.
If the installation succeeded, the openvr_mod.cfg file will be added automatically to the Editor Menu
for further configuration.
stl also creates a openvr_fsr-stl-enabled.txt in the game directory, which will be used to revert the openvr_fsr installation and recover the original openvr_api.dll

[frostworx]

Added in release v6.13