From 4dcc187fd58d34b6e9d6aeb4d3e95cc2afe5d8ec Mon Sep 17 00:00:00 2001
From: Timothy Nikkel <tnikkel@gmail.com>
Date: Thu, 7 Aug 2014 11:33:14 -0500
Subject: [PATCH] Bug 1042772. Set the dirty rect relative to the current
 frame, not the reference frame. r=roc

The offsetToReferenceFrame is to the reference frame for this, since we are transformed we are the reference frame, so the offset was 0,0. So the computation still produced correct results.
---
 layout/generic/nsFrame.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/layout/generic/nsFrame.cpp b/layout/generic/nsFrame.cpp
index f18b3e8e713d..a501de1ed27c 100644
--- a/layout/generic/nsFrame.cpp
+++ b/layout/generic/nsFrame.cpp
@@ -2105,7 +2105,7 @@ nsIFrame::BuildDisplayListForStackingContext(nsDisplayListBuilder* aBuilder,
     clipState.Restore();
     // Revert to the dirtyrect coming in from the parent, without our transform
     // taken into account.
-    buildingDisplayList.SetDirtyRect(aDirtyRect + offsetToReferenceFrame);
+    buildingDisplayList.SetDirtyRect(aDirtyRect);
 
     if (Preserves3DChildren()) {
       WrapPreserve3DList(this, aBuilder, &resultList);