commit 0486e8a71462430438a1ac593db0ffe0fb38b9a8
author balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162> Tue Dec 11 22:31:32 2007 +0000
committer balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162> Tue Dec 11 22:31:32 2007 +0000
tree a1ea02462b2442366efc1e2f7d858514c8f8b125
parent f5fdd0a855decf395561f49b96ee50aad5b0feaa

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

diff --git a/vnc.c b/vnc.c
index fcce00e..b20fe21 100644
--- a/vnc.c
+++ b/vnc.c
@@ -258,6 +258,13 @@
 
     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);