From 085b011856d81e962f72dfdda7fc97284dd7c70c Mon Sep 17 00:00:00 2001
From: Jim Mathies <jmathies@mozilla.com>
Date: Thu, 22 Aug 2013 20:54:49 -0500
Subject: [PATCH] Bug 904214 - Add missing assert per review comments. r=nrc

---
 gfx/layers/d3d11/CompositorD3D11.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gfx/layers/d3d11/CompositorD3D11.cpp b/gfx/layers/d3d11/CompositorD3D11.cpp
index d49395fa0fc5..d973ee8365f4 100644
--- a/gfx/layers/d3d11/CompositorD3D11.cpp
+++ b/gfx/layers/d3d11/CompositorD3D11.cpp
@@ -578,6 +578,7 @@ CompositorD3D11::DrawQuad(const gfx::Rect& aRect,
   case EFFECT_COMPONENT_ALPHA:
     {
       MOZ_ASSERT(gfxPlatform::ComponentAlphaEnabled());
+      MOZ_ASSERT(mAttachments->mComponentBlendState);
       EffectComponentAlpha* effectComponentAlpha =
         static_cast<EffectComponentAlpha*>(aEffectChain.mPrimaryEffect.get());
       TextureSourceD3D11* sourceOnWhite = effectComponentAlpha->mOnWhite->AsSourceD3D11();