Merge branch 'master' into 816

1 files changed, 2 insertions, 21 deletions

diff --git a/layout/svg/nsSVGUtils.cpp b/layout/svg/nsSVGUtils.cpp
index 344ebf645..b8794a05d 100644
--- a/layout/svg/nsSVGUtils.cpp
+++ b/layout/svg/nsSVGUtils.cpp
@@ -514,26 +514,7 @@ nsSVGUtils::DetermineMaskUsage(nsIFrame* aFrame, bool aHandleOpacity,
 
   nsTArray<nsSVGMaskFrame*> maskFrames = effectProperties.GetMaskFrames();
 
-#ifdef MOZ_ENABLE_MASK_AS_SHORTHAND
-  // For a HTML doc:
-  //   According to css-masking spec, always create a mask surface when we
-  //   have any item in maskFrame even if all of those items are
-  //   non-resolvable <mask-sources> or <images>, we still need to create a
-  //   transparent black mask layer under this condition.
-  // For a SVG doc:
-  //   SVG 1.1 say that  if we fail to resolve a mask, we should draw the
-  //   object unmasked.
-  aUsage.shouldGenerateMaskLayer =
-    (aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT)
-      ? maskFrames.Length() == 1 && maskFrames[0]
-      : maskFrames.Length() > 0;
-#else
-  // Since we do not support image mask so far, we should treat any
-  // unresolvable mask as no mask. Otherwise, any object with a valid image
-  // mask, e.g. url("xxx.png"), will become invisible just because we can not
-  // handle image mask correctly. (See bug 1294171)
-  aUsage.shouldGenerateMaskLayer = maskFrames.Length() == 1 && maskFrames[0];
-#endif
+  aUsage.shouldGenerateMaskLayer = (maskFrames.Length() > 0);
 
   bool isOK = effectProperties.HasNoFilterOrHasValidFilter();
   nsSVGClipPathFrame *clipPathFrame = effectProperties.GetClipPathFrame(&isOK);
@@ -704,7 +685,7 @@ nsSVGUtils::PaintFrameWithEffects(nsIFrame *aFrame,
   bool isOK = effectProperties.HasNoFilterOrHasValidFilter();
   nsSVGClipPathFrame *clipPathFrame = effectProperties.GetClipPathFrame(&isOK);
   nsSVGMaskFrame *maskFrame = effectProperties.GetFirstMaskFrame(&isOK);
-  if (!isOK) {
+  if (!isOK || !maskFrame) {
     // Some resource is invalid. We shouldn't paint anything.
     return DrawResult::SUCCESS;
   }