From 0486e8a71462430438a1ac593db0ffe0fb38b9a8 Mon Sep 17 00:00:00 2001 From: balrog Date: Tue, 11 Dec 2007 22:31:32 +0000 Subject: [PATCH] Fix fragments due to incomplete dirty tracking in CGA mode (Anthony Liguori). git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3809 c046a42c-6fe2-441c-8c8c-71466251a162 --- vnc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/vnc.c b/vnc.c index fcce00eddc..b20fe21d7d 100644 --- a/vnc.c +++ b/vnc.c @@ -258,6 +258,13 @@ static void vnc_dpy_update(DisplayState *ds, int x, int y, int w, int h) h += y; + /* round x down to ensure the loop only spans one 16-pixel block per, + iteration. otherwise, if (x % 16) != 0, the last iteration may span + two 16-pixel blocks but we only mark the first as dirty + */ + w += (x % 16); + x -= (x % 16); + for (; y < h; y++) for (i = 0; i < w; i += 16) vnc_set_bit(vs->dirty_row[y], (x + i) / 16);