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config: add tweak.damage-whole-window

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When enabled, foot will ‘damage’ the entire window, instead of just
the modified/updated rows.

This will force the compositor to redraw/blend the whole window.

This can be used to workaround an issue with fractional scaling in
Gnome, where random thin lines may appear.
This commit is contained in:
Daniel Eklöf 2020-09-06 17:52:07 +02:00
parent 4179e480e8
commit d040284cc7
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4 changed files with 27 additions and 2 deletions
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19
doc/foot.ini.5.scd
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@ -441,8 +441,8 @@ When reporting bugs, please mention if, and to what, you have changed
any of these options.
*allow-overflowing-double-width-glyphs*
When enabled, double width glyphs with a character width of 1 are
allowed to overflow into the neighbouring cell.
Boolean. when enabled, double width glyphs with a character width
of 1 are allowed to overflow into the neighbouring cell.
One use case for this is fonts "icon" characters in the Unicode
private usage area, e.g. Nerd Fonts, or Powerline Fonts. Without
@ -528,6 +528,21 @@ any of these options.
Default: lower=_500000_ (0.5ms), upper=_8333333_ (8.3ms - half a
frame interval).
*damage-whole-window*
Boolean. When enabled, foot will 'damage' the entire window each
time a frame has been rendered. This forces the compositor to
redraw the entire window. If disabled, foot will only 'damage'
updated rows.
There is normally *no* reason to enable this. However, it has been
seen to workaround an issue with _fractional scaling_ in _Gnome_.
Note that enabling this option is likely to increase CPU and/or
GPU usage (by the compositor, not by foot), and may have a
negative impact on battery life.
Default: _false_.
*max-shm-pool-size-mb*
This option controls the amount of *virtual* memory used by the
pixmap memory to which the terminal screen content is rendered.