From e00ee174fbedb5570a6b97122dd738487d25411a Mon Sep 17 00:00:00 2001
From: Matt Woodrow <mwoodrow@mozilla.com>
Date: Tue, 13 May 2014 11:46:54 +1200
Subject: [PATCH] Bug 1008573 - Simplify D3D10 invalid region before we clear
 the surface. r=Bas

---
 gfx/layers/d3d10/ThebesLayerD3D10.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gfx/layers/d3d10/ThebesLayerD3D10.cpp b/gfx/layers/d3d10/ThebesLayerD3D10.cpp
index ebd296e15642..091751fce582 100644
--- a/gfx/layers/d3d10/ThebesLayerD3D10.cpp
+++ b/gfx/layers/d3d10/ThebesLayerD3D10.cpp
@@ -404,6 +404,8 @@ ThebesLayerD3D10::DrawRegion(nsIntRegion &aRegion, SurfaceMode aMode)
     return;
   }
 
+  aRegion.SimplifyOutwardByArea(100 * 100);
+
   nsRefPtr<gfxASurface> destinationSurface;
   
   if (aMode == SurfaceMode::SURFACE_COMPONENT_ALPHA) {
@@ -412,8 +414,6 @@ ThebesLayerD3D10::DrawRegion(nsIntRegion &aRegion, SurfaceMode aMode)
     destinationSurface = mD2DSurface;
   }
 
-  aRegion.SimplifyOutwardByArea(100 * 100);
-
   MOZ_ASSERT(mDrawTarget);
   nsRefPtr<gfxContext> context = new gfxContext(mDrawTarget);