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[doc] install: Overlay Filter config polish

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Jonathan Rubenstein 2021-12-25 22:09:55 +02:00 committed by Geoffrey McRae
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doc/install.rst
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@ -328,6 +328,8 @@ These include:
- Performance metrics options
- Debug frame damage display
(see :ref:`client_config_widget`)
You can also reposition and resize enabled widgets, like the FPS/UPS Display,
and Performance Metrics.
@ -344,57 +346,52 @@ as your changes may be discarded.
Configuration Widget
~~~~~~~~~~~~~~~~~~~~
The Configuration Widget is accessible through the Overlay mode. The
The Configuration Widget is accessible through the Overlay Mode. The
widget has multiple tabs that allow setting a variety of modes and
parameters for the application.
parameters for Looking Glass at runtime.
Settings tab
^^^^^^^^^^^^
- Performance Metrics: Enabling this will turn on the Metrics Graphs
Widget. Multiple graphs can be enabled and they will stack vertically.
- EGL: Modify EGL features such as the algorithm used for scaling and
enabling night vision mode.
- Performance Metrics: A toggle for the Performance Metrics Widget.
Multiple graphs are available, and they will stack vertically.
- EGL: Modify EGL features, such as the algorithm used for scaling, and
night vision mode.
Changes in the Settings tab are not persistent and will change back to
Changes in the Settings tab are not persistent, and will change back to
their default values when the client is restarted.
EGL Filters tab
^^^^^^^^^^^^^^^
The EGL Filters tab is a GUI for enabling, configuring and ordering
the post-processing filter stack. Each filter can be expanded to open
its settings. Filters can also be re-ordered by dragging them up or down.
Filters application is cumulative, and order is important (e.g. applying CAS
before FSR might have different results than the reverse). Users are
encouraged to experiment with the order and parameters to achieve optimal
results. The currently available filters include:
The EGL Filters tab contains options for toggling, configuring, and ordering
post-processing filters. Each filter can be expanded to open its settings.
Filters can also be re-ordered by dragging them up or down. Filters are applied
from top to bottom, keep this in mind when ordering them. (applying CAS before
FSR might have different results than the reverse). Users are encouraged to
experiment with the order and parameters to achieve optimal results. The
currently available filters include:
- Downscaler: Filter for downscaling the host resolution. Can be used to undo
poor upscaling on the VM to better utilize AMD FSR (see below). The filter
has a pixel-size setting that is used to set the effective downscaling ratio,
and a configurable interpolation algorithm.
- AMD FidelityFX Super Resolution (FSR): A spatial upcaling filter that works
on low resolution frames from the guest VM and intelligently upscales to a
higher resolution. The filter sharpness is tunable, and displays the
equivalent AMD quality mode based on the resolution difference.
- Downscaler: Filter for downscaling resolution. Can be used to undo the
poor upscaling that some games implement such that it can then
be better upscaled using FSR (see below). The filter has a pixel-size setting
that is used to set the effective downscaling ratio and can be set to use
different downscaling algorithms.
- AMD FidelityFX Super Resolution (FSR): Filter implementing a rendering
technique for upscaling resolution. FSR works by accepting the original
frames (on the guest) at lower resolution, then applying a spatial upscaling
algorithm in the client to make the final result look as though it is
rendered in high-resolution. The FSR filter interface allows for fine
tuning the sharpness factor of the algorithm and shows the equivalent
quality mode based on the ratio between the original frame resolution
and the client resolution.
- AMD FidelityFX Contrast Adaptive Sharpening (CAS): Filter that
increases visual quality by applying a sharpening algorithm to the
frame. CAS can sometimes restore detail lost in a typical upscaling
application. The CAS filter interface has an adjustable sharpness
control.
video. CAS can sometimes restore detail lost in a typical upscaling
application. Has adjustable sharpness setting.
The filter stack settings and order can be saved to presets so that it
can be conveniently recalled at a later time. As filter settings are
usually application specific, multiple presets can be defined for each
case scenario. To save a preset, click on "Save preset as..." and enter
a preset name. Presets are recalled by selecting them in the "Preset name"
pull down. Presets are persistent and are stored on disk at
The filter settings and order can be saved to presets so that it can be restored
at a later time. As filter settings are usually application specific, multiple
presets can be defined for each case scenario. To save a preset, click on "Save
preset as..." and enter a preset name. Presets are loaded by selecting them in
the "Preset name" pull down. Presets are persistent and are stored on disk at
``$XDG_CONFIG_HOME/looking-glass/presets``.
.. warning::