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fix: consider dim introduced transparency for blur (#184)

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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
```
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rti 2023-06-04 21:48:19 +02:00 committed by GitHub
parent 6a6cf2841c
commit 3e6626d6c3
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1 changed files with 1 additions and 1 deletions
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2
sway/desktop/render.c
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@ -441,7 +441,7 @@ static void render_surface_iterator(struct sway_output *output,
pixman_region32_init(&opaque_region);
bool has_alpha = false;
if (deco_data.alpha < 1.0) {
if (deco_data.alpha < 1.0 || deco_data.dim_color[3] < 1.0) {
has_alpha = true;
pixman_region32_union_rect(&opaque_region, &opaque_region, 0, 0, 0, 0);
} else {