From 120ed895dfd42ed487f5eee74cba87d800bf5fc6 Mon Sep 17 00:00:00 2001
From: Vincent Wei <vincent@minigui.org>
Date: Wed, 5 Feb 2020 12:36:07 +0800
Subject: [PATCH] use SubtractRegion instead of SubtractClipRect

---
 src/kernel/compsor-fallback.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/kernel/compsor-fallback.c b/src/kernel/compsor-fallback.c
index 97fc450b..d2822f35 100644
--- a/src/kernel/compsor-fallback.c
+++ b/src/kernel/compsor-fallback.c
@@ -361,7 +361,7 @@ static void composite_win_znode (CompositorCtxt* ctxt,
             }
 
             if (is_top)
-                SubtractClipRect (&ctxt->left_rgn, &rc);
+                SubtractRegion (&ctxt->left_rgn, &ctxt->left_rgn, rgn);
         }
     }
     else {
@@ -446,8 +446,6 @@ static void on_dirty_wpp (CompositorCtxt* ctxt)
     const ZNODEHEADER* znode_hdr;
     CLIPRECT *crc;
 
-    _DBG_PRINTF("called\n");
-
     znode_hdr = ServerGetWinZNodeHeader (NULL, 0, NULL, TRUE);
     if (generate_dirty_region (ctxt, znode_hdr, NULL)) {
         tile_dirty_region_for_wallpaper (ctxt);