use wlr_scene_subsurface_tree_set_clip

References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4131
Closes: djpohly#411

client.h

@@ -140,6 +140,28 @@ client_get_appid(Client *c)
 	return c->surface.xdg->toplevel->app_id;
 }
 
+static inline void
+client_get_clip(Client *c, struct wlr_box *clip)
+{
+#ifdef XWAYLAND
+	if (client_is_x11(c)) {
+		*clip = (struct wlr_box){
+			.x = 0,
+			.y = 0,
+			.width = c->geom.width - c->bw,
+			.height = c->geom.height - c->bw};
+		return;
+	}
+#endif
+
+	*clip = (struct wlr_box){
+		.x = c->surface.xdg->pending.geometry.x,
+		.y = c->surface.xdg->pending.geometry.y,
+		.width = c->geom.width - c->bw,
+		.height = c->geom.height - c->bw};
+
+}
+
 static inline void
 client_get_geometry(Client *c, struct wlr_box *geom)
 {

dwl.c

@@ -1909,6 +1909,7 @@ void
 resize(Client *c, struct wlr_box geo, int interact)
 {
 	struct wlr_box *bbox = interact ? &sgeom : &c->mon->w;
+	struct wlr_box clip;
 	client_set_bounds(c, geo.width, geo.height);
 	c->geom = geo;
 	applybounds(c, bbox);
@@ -1927,6 +1928,8 @@ resize(Client *c, struct wlr_box geo, int interact)
 	/* this is a no-op if size hasn't changed */
 	c->resize = client_set_size(c, c->geom.width - 2 * c->bw,
 			c->geom.height - 2 * c->bw);
+	client_get_clip(c, &clip);
+	wlr_scene_subsurface_tree_set_clip(&c->scene_surface->node, &clip);
 }
 
 void