Blur strength

[ErikReider]

Adds support for blur strength.

2025-02-22.00-48-16.mp4

Here's what it looks like with just regular alpha:

Tested with SwayFX main branch using:

for_window [app_id="kitty" title="opacity test"] floating enable; resize set 800 400
exec kitty -T "opacity test" -o "background_opacity 0.0" -e $SHELL -c './opacity_script.sh; read'

script to run in nested kitty:

set_opacity() {
    opacity=$(perl -e "print ((100 - $i) / 100)")
    swaymsg "[app_id=\"kitty\" title=\"opacity test\"] opacity $opacity"
    echo "Opacity: $opacity"
    sleep 0.1
}

while true; do
    for ((i = 0; i < 100; i++)); do
        set_opacity "$i"
    done
    for ((i = 100; i >= 0; i--)); do
        set_opacity "$i"
    done
done

Tested in SwayFX:

• Floating toplevels (non-optimized blur)
• Tiled toplevels and “x-ray” floating toplevels (optimized blur)
• Scene rect color alpha adjusts blur alpha

[ErikReider]

Updated the desc with a video of the implementation. There are some minor artifacts in the top right section of the window blur, where there are thin lines. This is due to the lowering of the num_passes and doubling of the blur radius (which displays more artifacts).

Not sure if there's anything that can be done here, except maybe mixing a max opacity blur with the lower opacity blur? Or maybe mixing the higher num_passes version with the lower one?

[WillPower3309]

Updated the desc with a video of the implementation. There are some minor artifacts in the top right section of the window blur, where there are thin lines. This is due to the lowering of the num_passes and doubling of the blur radius (which displays more artifacts).

Not sure if there's anything that can be done here, except maybe mixing a max opacity blur with the lower opacity blur? Or maybe mixing the higher num_passes version with the lower one?

Is this still present? I didn't notice it from the video

[ErikReider]

Updated the desc with a video of the implementation. There are some minor artifacts in the top right section of the window blur, where there are thin lines. This is due to the lowering of the num_passes and doubling of the blur radius (which displays more artifacts).
Not sure if there's anything that can be done here, except maybe mixing a max opacity blur with the lower opacity blur? Or maybe mixing the higher num_passes version with the lower one?

Is this still present? I didn't notice it from the video

Not anymore! :D

[ErikReider]

Converting to draft again, we should wait with this until it can be tested with SwayFX animations

[ErikReider]

I added blur_strength and blur_alpha for finer tuning. Makes it easier for SwayFX to decide if it wants alpha or strength adjustments when fading in/out :D

[cccslater]

I'm off topic but - is that an inset border? Looks lovely, is it a SwayFX thing?