Author: Michael Vogt <michael.vogt@ubuntu.com>
Description: Workaround for problems with damage extension and refresh
 Add workaround patch by Aaron Plattner to fix problems with the damage
 extension and refresh (LP: #269904)
Origin: vendor, ubuntu (1:0.7.8-0ubuntu4)
Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/269904
--- compiz.orig/src/event.c
+++ compiz/src/event.c
@@ -2297,32 +2297,50 @@ handleEvent (CompDisplay *d,
 
 	    if (w)
 	    {
+		XserverRegion parts = XFixesCreateRegion(de->display, NULL, 0);
+		XRectangle *rects;
+		int nRects;
+
 		w->texture->oldMipmaps = TRUE;
 
+		// Get the damage region
+		XDamageSubtract(de->display, de->damage, None, parts);
+		rects = XFixesFetchRegion(de->display, parts, &nRects);
+		XFixesDestroyRegion(de->display, parts);
+
 		if (w->syncWait)
 		{
-		    if (w->nDamage == w->sizeDamage)
+		    int i;
+
+		    if (w->nDamage + nRects - 1 >= w->sizeDamage)
 		    {
 			w->damageRects = realloc (w->damageRects,
-						  (w->sizeDamage + 1) *
+						  (w->sizeDamage + nRects) *
 						  sizeof (XRectangle));
-			w->sizeDamage += 1;
+			w->sizeDamage += nRects;
 		    }
 
-		    w->damageRects[w->nDamage].x      = de->area.x;
-		    w->damageRects[w->nDamage].y      = de->area.y;
-		    w->damageRects[w->nDamage].width  = de->area.width;
-		    w->damageRects[w->nDamage].height = de->area.height;
-		    w->nDamage++;
+		    for (i = 0; i < nRects; i++)
+		    {
+			w->damageRects[w->nDamage] = rects[i];
+			w->nDamage++;
+		    }
 		}
 		else
 		{
-		    handleWindowDamageRect (w,
-					    de->area.x,
-					    de->area.y,
-					    de->area.width,
-					    de->area.height);
+		    int i;
+
+		    for (i = 0; i < nRects; i++)
+		    {
+			handleWindowDamageRect (w,
+						rects[i].x,
+						rects[i].y,
+						rects[i].width,
+						rects[i].height);
+		    }
 		}
+
+		XFree(rects);
 	    }
 	}
 	else if (d->shapeExtension &&
--- compiz.orig/src/window.c
+++ compiz/src/window.c
@@ -2205,7 +2205,7 @@ addWindow (CompScreen *screen,
 	XUnionRegion (&rect, w->region, w->region);
 
 	w->damage = XDamageCreate (d->display, id,
-				   XDamageReportRawRectangles);
+				   XDamageReportNonEmpty);
 
 	/* need to check for DisplayModal state on all windows */
 	w->state = getWindowState (d, w->id);