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README: Clarify setting variable overrides

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Andrew Eikum 2019-07-08 08:29:41 -05:00
parent 4708bd6f05
commit 988271e7c2
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README.md
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@ -238,13 +238,17 @@ Runtime Config Options
Proton can be tuned at runtime to help certain games run. The Steam client sets
some options for known games using the <tt>STEAM_COMPAT_CONFIG</tt> variable.
You can override these options using the environment variables described below.
The best way to set these environment overrides for all games is by renaming
`user_settings.sample.py` to `user_settings.py` and modifying it appropriately.
This file is located in the Proton installation directory in your Steam library
(often `~/.steam/steam/steamapps/common/Proton #.#`). If you want to change the
runtime configuration for a specific game, you can use the `Set Launch Options`
setting in the game's `Properties` dialog in the Steam client. You can launch
the game with environment variables using "`PROTON_VARIABLE=1 %command%`".
(often `~/.steam/steam/steamapps/common/Proton #.#`).
If you want to change the runtime configuration for a specific game, you can
use the `Set Launch Options` setting in the game's `Properties` dialog in the
Steam client. Set the variable, followed by `%command%`. For example, input
"`PROTON_USE_WINED3D=1 %command%`" to use the OpenGL-based wined3d renderer
instead of the Vulkan-based DXVK renderer.
To enable an option, set the variable to a non-<tt>0</tt> value. To disable an
option, set the variable to <tt>0</tt>. To use Steam's default configuration, do