win: assert we won't clobber existing mask

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
2022-11-15 18:03:31 +00:00
parent 7d0d693ca7
commit 9d7cbe49f1
1 changed files with 1 additions and 0 deletions
--- a/src/win.c
+++ b/src/win.c
@@ -346,6 +346,7 @@ static inline bool win_bind_pixmap(struct backend_base *b, struct managed_win *w
 }

 bool win_bind_mask(struct backend_base *b, struct managed_win *w) {
+	assert(!w->mask_image);
 	auto reg_bound_local = win_get_bounding_shape_global_by_val(w);
 	pixman_region32_translate(&reg_bound_local, -w->g.x, -w->g.y);
 	w->mask_image = b->ops->make_mask(