[picom] Enable background blur of transparent windows

.config/picom.conf

@@ -114,19 +114,24 @@ frame-opacity = 1;
 #inactive-dim = 0.8;
 # Do not let dimness adjust based on window opacity.
 #inactive-dim-fixed = true;
+
 # Blur background of transparent windows. Bad performance with X Render backend. GLX backend is preferred.
-blur-background = true;
-blur-method = "dual_kawase";
-blur-strength = 2;
 # Blur background of opaque windows with transparent frames as well.
-#blur-background-frame = true;
+blur-background-frame = true;
 # Do not let blur radius adjust based on window opacity.
 blur-background-fixed = false;
 blur-background-exclude = [
+    "class_g = 'slop'",
     "class_g = 'dmenu'",
     "window_type = 'dock'",
     "window_type = 'desktop'"
 ];
+blur:
+{
+  method = "dual_kawase";
+ # size = 10;
+ # deviation = 5.0;
+};
 
 #################################
 #