rules: set default window dim correctly

Signed-off-by: Yuxuan Shui <[email protected]>

CHANGELOG.md

@@ -1,3 +1,9 @@
+# Unreleased
+
+## Bug fixes
+
+* Windows become completely black when `rules` and `inactive-dim` are set at the same time.
+
 # v12-rc3 (2024-Aug-30)
 
 ## Bug fixes

src/picom.c

@@ -2000,7 +2000,7 @@ static struct window_options win_options_from_config(const struct options *opts)
 	    .shadow = opts->shadow_enable,
 	    .corner_radius = (unsigned)opts->corner_radius,
 	    .transparent_clipping = opts->transparent_clipping,
-	    .dim = opts->inactive_dim > 0,
+	    .dim = 0,
 	    .fade = opts->fading_enable,
 	    .shader = opts->window_shader_fg,
 	    .invert_color = false,