From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
Date: Tue, 4 Jun 2019 07:19:54 +0000 (+0900)
Subject: * src/xterm.c (x_scroll_run) [USE_CAIRO]: Dirty only destination rectangle.
X-Git-Tag: emacs-27.0.90~2709
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=512f036404b559ae1e3456c05301104f5c422676;p=emacs.git

* src/xterm.c (x_scroll_run) [USE_CAIRO]: Dirty only destination rectangle.
---

diff --git a/src/xterm.c b/src/xterm.c
index e9551475f7d..ccc84dcc716 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -4239,7 +4239,8 @@ x_scroll_run (struct window *w, struct run *run)
 		 width, height,
 		 x, to_y);
       if (cr)
-	cairo_surface_mark_dirty (cairo_get_target (cr));
+	cairo_surface_mark_dirty_rectangle (cairo_get_target (cr),
+					    x, to_y, width, height);
     }
   else if (FRAME_CR_CONTEXT (f))
     {