Integrates commits c85a455e and 2f9c63b0 from extra/sway.
Copied from c85a455e:
> As of version 1.17, xdg-desktop-portal requires desktops to declare
> which portals should be used. For Sway, this requires a file
> /usr/share/xdg-desktop-portal/sway-portals.conf (or a local user
> config).
>
> A reasonable default is to use GTK for the file picker (as wlr doesn't
> have file picker support) and wlr for screencast/screenshot support.
> Fedora does this similarly. [1]
>
> Upstream is not interested in shipping a configuration file [2] so we
> need to do it downstream.
>
> [1] https://src.fedoraproject.org/rpms/sway/blob/rawhide/f/sway-portals.conf
> [2] https://github.com/swaywm/sway/issues/7773c85a455eb62f9c63b053
* refactor: removed surface_width + surface_height from render_blur()
* Fixed scaling issues
* Minor refactors
* removed scaled_dst box
* removed uneeded fb bind
* removed unneeded src_box
* removed unneeded wlr_fbox_from_box function
* removed src_box
* Don't scale the blur translucent region twice
* Renamed extended_damage to original_damage to reflect better what it actually is
* Removed unneeded clearing of the wlr fbo before rendering onto it
* Removed the need for our own main FBO, also fixes some damage bugs
* Simplified detection of blur on workspace
* cleaned up comments
---------
Co-authored-by: Erik Reider <35975961+ErikReider@users.noreply.github.com>
The blur rendering logic includes the optimization to render blur only
for transparent surfaces. This patch considers surfaces as transparent
also when the transparency is only introduced by the dim color.
We can now have windows, that are opaque by default become transparent
with blurred background as soon as they loose focus.
Example configuration:
```
blur on
blur_passes 3
blur_radius 5
default_dim_inactive 0.15
dim_inactive_colors.unfocused #00000000
```
