Backed out changeset 544e2832e783 (bug 1449608) for bustages "xul.dll : fatal error LNK112". CLOSED TREE

gfx/layers/wr/ScrollingLayersHelper.cpp

@@ -403,8 +403,10 @@ ScrollingLayersHelper::RecurseAndDefineAsr(nsDisplayItem* aItem,
       aItem, aAsr->mParent, aChain, aAppUnitsPerDevPixel, aSc);
   ids = ancestorIds;
 
+  // Ok to pass nullptr for aLayer here (first arg) because aClip (last arg) is
+  // also nullptr.
   Maybe<ScrollMetadata> metadata = aAsr->mScrollableFrame->ComputeScrollMetadata(
-      mManager, aItem->ReferenceFrame(), ContainerLayerParameters(), nullptr);
+      nullptr, mManager, aItem->ReferenceFrame(), ContainerLayerParameters(), nullptr);
   MOZ_ASSERT(metadata);
   FrameMetrics& metrics = metadata->GetMetrics();
 

gfx/layers/wr/WebRenderScrollData.cpp

@@ -64,7 +64,7 @@ WebRenderLayerScrollData::Initialize(WebRenderScrollData& aOwner,
       mScrollIds.AppendElement(index.ref());
     } else {
       Maybe<ScrollMetadata> metadata = asr->mScrollableFrame->ComputeScrollMetadata(
-          aOwner.GetManager(), aItem->ReferenceFrame(),
+          nullptr, aOwner.GetManager(), aItem->ReferenceFrame(),
           ContainerLayerParameters(), nullptr);
       MOZ_ASSERT(metadata);
       MOZ_ASSERT(metadata->GetMetrics().GetScrollId() == scrollId);

layout/generic/nsGfxScrollFrame.cpp

@@ -3898,7 +3898,8 @@ ScrollFrameHelper::DecideScrollableLayer(nsDisplayListBuilder* aBuilder,
 
 
 Maybe<ScrollMetadata>
-ScrollFrameHelper::ComputeScrollMetadata(LayerManager* aLayerManager,
+ScrollFrameHelper::ComputeScrollMetadata(Layer* aLayer,
+                                         LayerManager* aLayerManager,
                                          const nsIFrame* aContainerReferenceFrame,
                                          const ContainerLayerParameters& aParameters,
                                          const DisplayItemClip* aClip) const
@@ -3907,11 +3908,6 @@ ScrollFrameHelper::ComputeScrollMetadata(LayerManager* aLayerManager,
     return Nothing();
   }
 
-  if (!nsLayoutUtils::UsesAsyncScrolling(mOuter)) {
-    // Return early, since if we don't use APZ we don't need FrameMetrics.
-    return Nothing();
-  }
-
   nsPoint toReferenceFrame = mOuter->GetOffsetToCrossDoc(aContainerReferenceFrame);
 
   Maybe<nsRect> parentLayerClip;
@@ -3922,33 +3918,11 @@ ScrollFrameHelper::ComputeScrollMetadata(LayerManager* aLayerManager,
   }
 
   bool isRootContent = mIsRoot && mOuter->PresContext()->IsRootContentDocument();
-
+  bool thisScrollFrameUsesAsyncScrolling = nsLayoutUtils::UsesAsyncScrolling(mOuter);
-  MOZ_ASSERT(mScrolledFrame->GetContent());
+  if (!thisScrollFrameUsesAsyncScrolling) {
-
+    if (parentLayerClip) {
-  nsRect scrollport = mScrollPort + toReferenceFrame;
-
-  return Some(nsLayoutUtils::ComputeScrollMetadata(
-    mScrolledFrame, mOuter, mOuter->GetContent(),
-    aContainerReferenceFrame, aLayerManager, mScrollParentID,
-    scrollport, parentLayerClip, isRootContent, aParameters));
-}
-
-void
-ScrollFrameHelper::ClipLayerToDisplayPort(Layer* aLayer,
-                                          const DisplayItemClip* aClip,
-                                          const ContainerLayerParameters& aParameters) const
-{
       // If APZ is not enabled, we still need the displayport to be clipped
       // in the compositor.
-  if (!nsLayoutUtils::UsesAsyncScrolling(mOuter)) {
-    Maybe<nsRect> parentLayerClip;
-    // For containerful frames, the clip is on the container layer.
-    if (aClip &&
-        (!gfxPrefs::LayoutUseContainersForRootFrames() || mAddClipRectToLayer)) {
-      parentLayerClip = Some(aClip->GetClipRect());
-    }
-
-    if (parentLayerClip) {
       ParentLayerIntRect displayportClip =
         ViewAs<ParentLayerPixel>(
           parentLayerClip->ScaleToNearestPixels(
@@ -3964,7 +3938,19 @@ ScrollFrameHelper::ClipLayerToDisplayPort(Layer* aLayer,
       }
       aLayer->SetClipRect(Some(layerClip));
     }
+
+    // Return early, since if we don't use APZ we don't need FrameMetrics.
+    return Nothing();
   }
+
+  MOZ_ASSERT(mScrolledFrame->GetContent());
+
+  nsRect scrollport = mScrollPort + toReferenceFrame;
+
+  return Some(nsLayoutUtils::ComputeScrollMetadata(
+    mScrolledFrame, mOuter, mOuter->GetContent(),
+    aContainerReferenceFrame, aLayerManager, mScrollParentID,
+    scrollport, parentLayerClip, isRootContent, aParameters));
 }
 
 bool

layout/generic/nsGfxScrollFrame.h

@@ -464,13 +464,11 @@ public:
   }
   bool WantAsyncScroll() const;
   Maybe<mozilla::layers::ScrollMetadata> ComputeScrollMetadata(
+    Layer* aLayer,
     LayerManager* aLayerManager,
     const nsIFrame* aContainerReferenceFrame,
     const ContainerLayerParameters& aParameters,
     const mozilla::DisplayItemClip* aClip) const;
-  void ClipLayerToDisplayPort(Layer* aLayer,
-                              const mozilla::DisplayItemClip* aClip,
-                              const ContainerLayerParameters& aParameters) const;
 
   // nsIScrollbarMediator
   void ScrollByPage(nsScrollbarFrame* aScrollbar, int32_t aDirection,
@@ -616,7 +614,7 @@ public:
   // will already have the necessary frame metrics.
   bool mIsScrollableLayerInRootContainer:1;
 
-  // If true, add clipping in ScrollFrameHelper::ClipLayerToDisplayPort.
+  // If true, add clipping in ScrollFrameHelper::ComputeFrameMetrics.
   bool mAddClipRectToLayer:1;
 
   // True if this frame has been scrolled at least once
@@ -972,21 +970,16 @@ public:
     return mHelper.WantAsyncScroll();
   }
   virtual mozilla::Maybe<mozilla::layers::ScrollMetadata> ComputeScrollMetadata(
+    Layer* aLayer,
     LayerManager* aLayerManager,
     const nsIFrame* aContainerReferenceFrame,
     const ContainerLayerParameters& aParameters,
     const mozilla::DisplayItemClip* aClip) const override
   {
-    return mHelper.ComputeScrollMetadata(aLayerManager, aContainerReferenceFrame, aParameters, aClip);
+    return mHelper.ComputeScrollMetadata(aLayer, aLayerManager, aContainerReferenceFrame, aParameters, aClip);
   }
-  virtual void ClipLayerToDisplayPort(Layer* aLayer,
+  virtual bool IsIgnoringViewportClipping() const override {
-                                      const mozilla::DisplayItemClip* aClip,
+    return mHelper.IsIgnoringViewportClipping();
-                                      const ContainerLayerParameters& aParameters) const override
-  {
-    mHelper.ClipLayerToDisplayPort(aLayer, aClip, aParameters);
-  }
-virtual bool IsIgnoringViewportClipping() const override {
-return mHelper.IsIgnoringViewportClipping();
   }
   virtual void MarkScrollbarsDirtyForReflow() const override {
     mHelper.MarkScrollbarsDirtyForReflow();
@@ -1420,20 +1413,16 @@ public:
     return mHelper.WantAsyncScroll();
   }
   virtual mozilla::Maybe<mozilla::layers::ScrollMetadata> ComputeScrollMetadata(
+    Layer* aLayer,
     LayerManager* aLayerManager,
     const nsIFrame* aContainerReferenceFrame,
     const ContainerLayerParameters& aParameters,
     const mozilla::DisplayItemClip* aClip) const override
   {
-    return mHelper.ComputeScrollMetadata(aLayerManager, aContainerReferenceFrame, aParameters, aClip);
+    return mHelper.ComputeScrollMetadata(aLayer, aLayerManager, aContainerReferenceFrame, aParameters, aClip);
   }
-  virtual void ClipLayerToDisplayPort(Layer* aLayer,
+  virtual bool IsIgnoringViewportClipping() const override {
-                                      const mozilla::DisplayItemClip* aClip,
+    return mHelper.IsIgnoringViewportClipping();
-                                      const ContainerLayerParameters& aParameters) const override {
-    mHelper.ClipLayerToDisplayPort(aLayer, aClip, aParameters);
-  }
-virtual bool IsIgnoringViewportClipping() const override {
-return mHelper.IsIgnoringViewportClipping();
   }
   virtual void MarkScrollbarsDirtyForReflow() const override {
     mHelper.MarkScrollbarsDirtyForReflow();

layout/generic/nsIScrollableFrame.h

@@ -411,19 +411,16 @@ public:
    */
   virtual bool WantAsyncScroll() const = 0;
   /**
-   * Returns the ScrollMetadata contributed by this frame, if there is one.
+   * aLayer's animated geometry root is this frame. Returns the ScrollMetadata
+   * contributed by this frame, if there is one.
+   * If aClip is non-null, then aLayer must also be non-null.
    */
   virtual mozilla::Maybe<mozilla::layers::ScrollMetadata> ComputeScrollMetadata(
+    mozilla::layers::Layer* aLayer,
     mozilla::layers::LayerManager* aLayerManager,
     const nsIFrame* aContainerReferenceFrame,
     const ContainerLayerParameters& aParameters,
     const mozilla::DisplayItemClip* aClip) const = 0;
-  /**
-   * Ensure's aLayer is clipped to the display port.
-   */
-  virtual void ClipLayerToDisplayPort(mozilla::layers::Layer* aLayer,
-                                      const mozilla::DisplayItemClip* aClip,
-                                      const ContainerLayerParameters& aParameters) const;
 
   /**
    * If this scroll frame is ignoring viewporting clipping

layout/painting/FrameLayerBuilder.cpp

@@ -1574,19 +1574,6 @@ protected:
   // thing repeatly.
   AnimatedGeometryRoot* mLastDisplayPortAGR;
   nsRect mLastDisplayPortRect;
-
-  // Cache ScrollMetadata so it doesn't need recomputed if the ASR and clip are unchanged.
-  // If mASR == nullptr then mMetadata is not valid.
-  struct CachedScrollMetadata {
-    const ActiveScrolledRoot* mASR;
-    const DisplayItemClip* mClip;
-    Maybe<ScrollMetadata> mMetadata;
-
-    CachedScrollMetadata()
-      : mASR(nullptr), mClip(nullptr)
-    {}
-  };
-  CachedScrollMetadata mCachedScrollMetadata;
 };
 
 bool
@@ -5462,20 +5449,9 @@ ContainerState::SetupScrollingMetadata(NewLayerEntry* aEntry)
     const DisplayItemClip* clip =
       (clipChain && clipChain->mASR == asr->mParent) ? &clipChain->mClip : nullptr;
 
-    scrollFrame->ClipLayerToDisplayPort(aEntry->mLayer, clip, mParameters);
+    Maybe<ScrollMetadata> metadata =
-
+      scrollFrame->ComputeScrollMetadata(aEntry->mLayer, aEntry->mLayer->Manager(),
-    Maybe<ScrollMetadata> metadata;
-    if (mCachedScrollMetadata.mASR == asr &&
-        mCachedScrollMetadata.mClip == clip) {
-      metadata = mCachedScrollMetadata.mMetadata;
-    } else {
-      metadata = scrollFrame->ComputeScrollMetadata(aEntry->mLayer->Manager(),
             mContainerReferenceFrame, mParameters, clip);
-      mCachedScrollMetadata.mASR = asr;
-      mCachedScrollMetadata.mClip = clip;
-      mCachedScrollMetadata.mMetadata = metadata;
-    }
-
     if (!metadata) {
       continue;
     }