From f25161552455d076f0f15cadf522a8b57b829e2f Mon Sep 17 00:00:00 2001
From: DreamMaoMao <2523610504@qq.com>
Date: Fri, 13 Feb 2026 11:06:12 +0800
Subject: [PATCH] opt: flush the blur background cache when unmap a background
 layer

---
 src/mango.c | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/src/mango.c b/src/mango.c
index ca25dbc..e8fd2e6 100644
--- a/src/mango.c
+++ b/src/mango.c
@@ -2275,6 +2275,19 @@ static void iter_layer_scene_buffers(struct wlr_scene_buffer *buffer,
 	}
 }
 
+void layer_flush_blur_background(LayerSurface *l) {
+	if (!blur)
+		return;
+
+	// 如果背景层发生变化,标记优化的模糊背景缓存需要更新
+	if (l->layer_surface->current.layer ==
+		ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND) {
+		if (l->mon) {
+			wlr_scene_optimized_blur_mark_dirty(l->mon->blur);
+		}
+	}
+}
+
 void maplayersurfacenotify(struct wl_listener *listener, void *data) {
 	LayerSurface *l = wl_container_of(listener, l, map);
 	struct wlr_layer_surface_v1 *layer_surface = l->layer_surface;
@@ -2402,15 +2415,7 @@ void commitlayersurfacenotify(struct wl_listener *listener, void *data) {
 		}
 	}
 
-	if (blur) {
-		// 如果背景层发生变化,标记优化的模糊背景缓存需要更新
-		if (layer_surface->current.layer ==
-			ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND) {
-			if (l->mon) {
-				wlr_scene_optimized_blur_mark_dirty(l->mon->blur);
-			}
-		}
-	}
+	layer_flush_blur_background(l);
 
 	if (layer_surface == exclusive_focus &&
 		layer_surface->current.keyboard_interactive !=
@@ -5643,6 +5648,7 @@ void unmaplayersurfacenotify(struct wl_listener *listener, void *data) {
 		focusclient(focustop(selmon), 1);
 	motionnotify(0, NULL, 0, 0, 0, 0);
 	l->being_unmapped = false;
+	layer_flush_blur_background(l);
 	wlr_scene_node_destroy(&l->shadow->node);
 	l->shadow = NULL;
 }