$NetBSD: patch-aa,v 1.1 2008/01/29 03:50:26 bjs Exp $

libXdamage incorrectly encodes/decodes the 'More' field from the event.

The client library for xdamage currently fails to fill in the 'more'
field.  As a result, you get whatever uninitialised junk was there
before.

The server sets the high bit of 'level' when there is
'more' (DamageNotifyMore = 0x80).  A patch follows to fix the client
library. (from GIT)

--- src/Xdamage.c.orig	2007-01-09 19:20:57.000000000 -0500
+++ src/Xdamage.c
@@ -231,7 +231,8 @@ XDamageWireToEvent(Display *dpy, XEvent 
 	aevent->display = dpy;
 	aevent->drawable = awire->drawable;
 	aevent->damage = awire->damage;
-	aevent->level = awire->level;
+	aevent->level = awire->level & ~DamageNotifyMore;
+	aevent->more = (awire->level & DamageNotifyMore) ? True : False;
 	aevent->timestamp = awire->timestamp;
 	aevent->area.x = awire->area.x;
 	aevent->area.y = awire->area.y;
@@ -264,7 +265,7 @@ XDamageEventToWire(Display *dpy, XEvent 
 	awire->type = aevent->type | (aevent->send_event ? 0x80 : 0);
 	awire->drawable = aevent->drawable;
 	awire->damage = aevent->damage;
-	awire->level = aevent->level;
+	awire->level = aevent->level | (aevent->more ? DamageNotifyMore : 0);
 	awire->timestamp = aevent->timestamp;
 	awire->area.x = aevent->area.x;
 	awire->area.y = aevent->area.y;