compiz/compiz_damage-report-non-empty.patch

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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
--- a/src/event.c
+++ b/src/event.c
@@ -2315,32 +2315,50 @@ 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 &&
--- a/src/window.c
+++ b/src/window.c
@@ -2207,7 +2207,7 @@ 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);