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[doc] install: Add Configuration Widget section
Add a section to cover the configuration widget, the various tabs and settings and the new post-processing filter stack.
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@ -321,6 +321,72 @@ in a special config file $XDG_CONFIG_HOME/looking-glass/imgui.ini.
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Please refrain from editing this file manually as your changes might
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be overwritten by the client.
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.. _client_config_widget:
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Configuration Widget
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~~~~~~~~~~~~~~~~~~~~
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The Configuration Widget is accessible through the Overlay mode. The
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widget has multiple tabs that allow setting a variety of modes and
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parameters for the application.
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Settings tab
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^^^^^^^^^^^^
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- Performance Metrics: Enabling this will turn on the Metrics Graphs
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Widget. Multiple graphs can be enabled and they will stack vertically.
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- EGL: Modify EGL features such as the algorithm used for scaling and
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enabling night vision mode.
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Changes in the Settings tab are not persistent and will change back to
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their default values when the client is restarted.
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EGL Filters tab
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^^^^^^^^^^^^^^^
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The EGL Filters tab is a GUI for enabling, configuring and ordering
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the post-processing filter stack. Each filter can be expanded to open
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its settings. Filters can also be re-ordered by dragging them up or down.
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Filters application is cumulative, and order is important (e.g. applying CAS
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before FSR might have different results than the reverse). Users are
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encouraged to experiment with the order and parameters to achieve optimal
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results. The currently available filters include:
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- Downscaler: Filter for downscaling resolution. Can be used to undo the
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poor upscaling that some games implement such that it can then
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be better upscaled using FSR (see below). The filter has a pixel-size setting
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that is used to set the effective downscaling ratio and can be set to use
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different downscaling algorithms.
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- AMD FidelityFX Super Resolution (FSR): Filter implementing a rendering
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technique for upscaling resolution. FSR works by accepting the original
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frames (on the guest) at lower resolution, then applying a spatial upscaling
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algorithm in the client to make the final result look as though it is
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rendered in high-resolution. The FSR filter interface allows for fine
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tuning the sharpness factor of the algorithm and shows the equivalent
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quality mode based on the ratio between the original frame resolution
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and the client resolution.
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- AMD FidelityFX Contrast Adaptive Sharpening (CAS): Filter that
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increases visual quality by applying a sharpening algorithm to the
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frame. CAS can sometimes restore detail lost in a typical upscaling
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application. The CAS filter interface has an adjustable sharpness
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control.
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The filter stack settings and order can be saved to presets so that it
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can be conveniently recalled at a later time. As filter settings are
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usually application specific, multiple presets can be defined for each
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case scenario. To save a preset, click on "Save preset as..." and enter
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a preset name. Presets are recalled by selecting them in the "Preset name"
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pull down. Presets are persistent and are stored on disk at
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``$XDG_CONFIG_HOME/looking-glass/presets``.
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.. warning::
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Please refrain from modifying any files under the ``presets`` folder.
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Those files are meant to be modified only by the Looking-Glass client.
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.. note::
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Although presets are persistent, the client will not remember which
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preset was used last session, so a preset needs to be recalled once
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the client starts.
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.. _client_full_command_options:
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Full Command Line Options
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