Attachment 454350 Details for Bug 237711 – Patch, v1

[patch] Patch, v1

bug-237711-20220310060206.patch (text/plain), 25.05 KB, created by Nikolas Zimmermann on 2022-03-10 06:02:07 PST

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Creator: Nikolas Zimmermann

Created: 2022-03-10 06:02:07 PST

Size: 25.05 KB

patch

obsolete

>Subversion Revision: 291105
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index 58ea6f304366d74d000351be0b748d0d022cf6e4..daa40aa7aa60323e0cf38afa453506751e261087 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,60 @@
>+2022-03-10  Nikolas Zimmermann  <nzimmermann@igalia.com>
>+
>+        [LBSE] Activate SVG transform support through layers
>+        https://bugs.webkit.org/show_bug.cgi?id=237711
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Activate transforms for SVG layers.
>+
>+        Use the flag to keep track of the presence of SVG transformations
>+        on a renderer. CSS/HTML renderers can rely only on the RenderStyle
>+        to determine if transformations are applied, whereas SVG has to
>+        consult additional sources, such as the SVG 'transform' attribute.
>+
>+        A SVG renderer with the 'HasSVGTransform' flag set should behave
>+        like any SVG/HTML renderer that has CSS transformations applied.
>+
>+        TODO: Write more about this.
>+
>+        Covered by existing tests, no change in behaviour.
>+
>+        * rendering/RenderBox.cpp:
>+        (WebCore::RenderBox::updateLayerTransform): Deleted.
>+        * rendering/RenderBox.h:
>+        * rendering/RenderLayer.cpp:
>+        (WebCore::canCreateStackingContext):
>+        (WebCore::updateTransformFromStyle):
>+        (WebCore::RenderLayer::currentTransform const):
>+        * rendering/RenderLayerModelObject.cpp:
>+        (WebCore::RenderLayerModelObject::updateLayerTransform):
>+        (WebCore::RenderLayerModelObject::applySVGTransform const):
>+        * rendering/RenderLayerModelObject.h:
>+        * rendering/RenderObject.cpp:
>+        (WebCore::RenderObject::setHasSVGTransform):
>+        * rendering/RenderObject.h:
>+        (WebCore::RenderObject::hasSVGTransform const):
>+        (WebCore::RenderObject::hasTransform const):
>+        * rendering/svg/RenderSVGContainer.cpp:
>+        (WebCore::SVGLayerTransformUpdater::SVGLayerTransformUpdater):
>+        (WebCore::SVGLayerTransformUpdater::~SVGLayerTransformUpdater):
>+        (WebCore::RenderSVGContainer::layout):
>+        * rendering/svg/RenderSVGContainer.h:
>+        (WebCore::RenderSVGContainer::updateLayerInformation): Deleted.
>+        * rendering/svg/RenderSVGModelObject.cpp:
>+        (WebCore::RenderSVGModelObject::updateFromStyle):
>+        * rendering/svg/RenderSVGRoot.cpp:
>+        (WebCore::RenderSVGRoot::updateFromStyle):
>+        * rendering/svg/RenderSVGShape.cpp:
>+        (WebCore::RenderSVGShape::layout):
>+        (WebCore::RenderSVGShape::applyTransform const):
>+        * rendering/svg/RenderSVGShape.h:
>+        * rendering/svg/RenderSVGTransformableContainer.cpp:
>+        (WebCore::RenderSVGTransformableContainer::updateFromStyle):
>+        (WebCore::RenderSVGTransformableContainer::applyTransform const):
>+        * svg/SVGGraphicsElement.cpp:
>+        (WebCore::SVGGraphicsElement::animatedLocalTransform const):
>+
> 2022-03-10  Nikolas Zimmermann  <nzimmermann@igalia.com>
> 
>         Unify reference box / CTM computation in RenderLayer
>diff --git a/Source/WebCore/rendering/RenderBox.cpp b/Source/WebCore/rendering/RenderBox.cpp
>index 415e94f5cbc1aef8938d18e71bf74455c11d98c7..2f8629b4c80d9716e2cf388ad6f6793a9b791bdb 100644
>--- a/Source/WebCore/rendering/RenderBox.cpp
>+++ b/Source/WebCore/rendering/RenderBox.cpp
>@@ -662,13 +662,6 @@ void RenderBox::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
>     quads.append(localToAbsoluteQuad(localRect, UseTransforms, wasFixed));
> }
> 
>-void RenderBox::updateLayerTransform()
>-{
>-    // Transform-origin depends on box size, so we need to update the layer transform after layout.
>-    if (hasLayer())
>-        layer()->updateTransform();
>-}
>-
> void RenderBox::applyTransform(TransformationMatrix& t, const RenderStyle& style, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> options) const
> {
>     style.applyTransform(t, boundingBox, options);
>diff --git a/Source/WebCore/rendering/RenderBox.h b/Source/WebCore/rendering/RenderBox.h
>index e407cbcfc5f42917b599ea254f34920df5c67f9d..df66bb6c7d968073cde4240073ba0dbc4dddd12a 100644
>--- a/Source/WebCore/rendering/RenderBox.h
>+++ b/Source/WebCore/rendering/RenderBox.h
>@@ -218,7 +218,6 @@ public:
>     void addOverflowFromChild(const RenderBox* child) { addOverflowFromChild(child, child->locationOffset()); }
>     void addOverflowFromChild(const RenderBox* child, const LayoutSize& delta);
> 
>-    void updateLayerTransform();
>     void applyTransform(TransformationMatrix&, const RenderStyle&, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> = RenderStyle::allTransformOperations) const override;
> 
>     LayoutSize contentSize() const { return { contentWidth(), contentHeight() }; }
>diff --git a/Source/WebCore/rendering/RenderLayer.cpp b/Source/WebCore/rendering/RenderLayer.cpp
>index f6150025d9f1969dc9a7c5609423e52d20395e42..6cad60f48b346edc6456d4a9952601d3068d67c0 100644
>--- a/Source/WebCore/rendering/RenderLayer.cpp
>+++ b/Source/WebCore/rendering/RenderLayer.cpp
>@@ -552,6 +552,9 @@ static bool canCreateStackingContext(const RenderLayer& layer)
> {
>     auto& renderer = layer.renderer();
>     return renderer.hasTransformRelatedProperty()
>+#if ENABLE(LAYER_BASED_SVG_ENGINE)
>+        || renderer.hasSVGTransform()
>+#endif
>         || renderer.hasClipPath()
>         || renderer.hasFilter()
>         || renderer.hasMask()
>@@ -1310,13 +1313,19 @@ static inline FloatRect computeReferenceBox(const RenderLayerModelObject& render
> 
> static inline void updateTransformFromStyle(TransformationMatrix& transform, const RenderLayerModelObject& renderer, const RenderStyle& style, OptionSet<RenderStyle::TransformOperationOption> options)
> {
>-    FloatRect referenceBox;
>+    auto referenceBox = renderer.transformReferenceBoxRect();
> 
>-    // FIXME: [LBSE] Upstream reference box computation for RenderSVGModelObject derived renderers
>-    if (is<RenderBox>(renderer))
>-        referenceBox = snapRectToDevicePixels(LayoutRect(renderer.transformReferenceBoxRect()), renderer.document().deviceScaleFactor());
>+#if ENABLE(LAYER_BASED_SVG_ENGINE)
>+    // No pixel snapping within SVG subtree.
>+    if (renderer.isSVGLayerAwareRenderer() && renderer.document().settings().layerBasedSVGEngineEnabled()) {
>+        renderer.applyTransform(transform, style, referenceBox, options);
>+        makeMatrixRenderable(transform, renderer.view().compositor().canRender3DTransforms());
>+        return;
>+    }
>+#endif
> 
>-    renderer.applyTransform(transform, style, referenceBox, options);
>+    auto pixelSnappedReferenceBox = snapRectToDevicePixels(LayoutRect(referenceBox), renderer.document().deviceScaleFactor());
>+    renderer.applyTransform(transform, style, pixelSnappedReferenceBox, options);
>     makeMatrixRenderable(transform, renderer.view().compositor().canRender3DTransforms());
> }
> 
>@@ -1353,22 +1362,16 @@ TransformationMatrix RenderLayer::currentTransform(OptionSet<RenderStyle::Transf
>     if (!m_transform)
>         return { };
> 
>-    // FIXME: [LBSE] Upstream transform support for RenderSVGModelObject derived renderers
>-    if (!is<RenderBox>(renderer()))
>-        return { };
>-
>-    auto& renderBox = downcast<RenderBox>(renderer());
>-
>     // m_transform includes transform-origin and is affected by the choice of the transform-box.
>     // Therefore we can only use the cached m_transform, if the animation doesn't alter transform-box or excludes transform-origin.
> 
>     // Query the animatedStyle() to obtain the current transformation, when accelerated transform animations are running.
>-    auto styleable = Styleable::fromRenderer(renderBox);
>+    auto styleable = Styleable::fromRenderer(renderer());
>     if ((styleable && styleable->isRunningAcceleratedTransformAnimation()) || !options.contains(RenderStyle::TransformOperationOption::TransformOrigin)) {
>-        std::unique_ptr<RenderStyle> animatedStyle = renderBox.animatedStyle();
>+        std::unique_ptr<RenderStyle> animatedStyle = renderer().animatedStyle();
> 
>         TransformationMatrix transform;
>-        updateTransformFromStyle(transform, renderBox, *animatedStyle, options);
>+        updateTransformFromStyle(transform, renderer(), *animatedStyle, options);
>         return transform;
>     }
> 
>diff --git a/Source/WebCore/rendering/RenderLayerModelObject.cpp b/Source/WebCore/rendering/RenderLayerModelObject.cpp
>index 8d990f1d531be63f2b25d06145fb131c4100726c..1940568eaf9dcb6196229cfe5bb25fee039bf432 100644
>--- a/Source/WebCore/rendering/RenderLayerModelObject.cpp
>+++ b/Source/WebCore/rendering/RenderLayerModelObject.cpp
>@@ -31,6 +31,7 @@
> #include "RenderLayerScrollableArea.h"
> #include "RenderSVGModelObject.h"
> #include "RenderView.h"
>+#include "SVGGraphicsElement.h"
> #include "Settings.h"
> #include "StyleScrollSnapPoints.h"
> #include "TransformState.h"
>@@ -231,6 +232,13 @@ void RenderLayerModelObject::suspendAnimations(MonotonicTime time)
>     layer()->backing()->suspendAnimations(time);
> }
> 
>+void RenderLayerModelObject::updateLayerTransform()
>+{
>+    // Transform-origin depends on box size, so we need to update the layer transform after layout.
>+    if (hasLayer())
>+        layer()->updateTransform();
>+}
>+
> #if ENABLE(LAYER_BASED_SVG_ENGINE)
> std::optional<LayoutRect> RenderLayerModelObject::computeVisibleRectInSVGContainer(const LayoutRect& rect, const RenderLayerModelObject* container, RenderObject::VisibleRectContext context) const
> {
>@@ -316,6 +324,38 @@ void RenderLayerModelObject::mapLocalToSVGContainer(const RenderLayerModelObject
> 
>     container->mapLocalToContainer(ancestorContainer, transformState, mode, wasFixed);
> }
>+
>+void RenderLayerModelObject::applySVGTransform(TransformationMatrix& transform, SVGGraphicsElement& graphicsElement, const RenderStyle& style, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> options) const
>+{
>+    // This check does not use style.hasTransformRelatedProperty() on purpose -- we only want to know if either the 'transform' property, an
>+    // offset path, or the individual transform operations are set (perspective / transform-style: preserve-3d are not relevant here).
>+    bool hasCSSTransform = style.hasTransform() || style.rotate() || style.translate() || style.scale();
>+
>+    bool affectedByTransformOrigin = false;
>+    std::optional<AffineTransform> svgTransform;
>+
>+    if (hasCSSTransform)
>+        affectedByTransformOrigin = style.affectedByTransformOrigin();
>+    else if (auto affineTransform = graphicsElement.animatedLocalTransform(); !affineTransform.isIdentity()) {
>+        svgTransform = affineTransform;
>+        affectedByTransformOrigin = affineTransform.a() != 1 || affineTransform.b() || affineTransform.c() || affineTransform.d() != 1;
>+    }
>+
>+    if (!hasCSSTransform && !svgTransform.has_value())
>+        return;
>+
>+    FloatPoint3D originTranslate;
>+    if (options.contains(RenderStyle::TransformOperationOption::TransformOrigin) && affectedByTransformOrigin)
>+        originTranslate = style.applyTransformOrigin(transform, boundingBox);
>+
>+    // CSS transforms take precedence over SVG transforms.
>+    if (hasCSSTransform)
>+        style.applyCSSTransform(transform, boundingBox, options);
>+    else
>+        transform.multiplyAffineTransform(svgTransform.value());
>+
>+    style.unapplyTransformOrigin(transform, originTranslate);
>+}
> #endif
> 
> } // namespace WebCore
>diff --git a/Source/WebCore/rendering/RenderLayerModelObject.h b/Source/WebCore/rendering/RenderLayerModelObject.h
>index d44ff6ad52d3a59f51d1c0feaf6ce795a5e0ede0..124aebd4d74033c7651c90af3efe0b7d9dff7df8 100644
>--- a/Source/WebCore/rendering/RenderLayerModelObject.h
>+++ b/Source/WebCore/rendering/RenderLayerModelObject.h
>@@ -28,6 +28,7 @@ namespace WebCore {
> 
> class KeyframeList;
> class RenderLayer;
>+class SVGGraphicsElement;
> 
> struct LayerRepaintRects {
>     LayoutRect clippedOverflowRect;
>@@ -75,8 +76,12 @@ public:
>     // Provides the SVG implementation for mapLocalToContainer().
>     // This lives in RenderLayerModelObject, which is the common base-class for all SVG renderers.
>     void mapLocalToSVGContainer(const RenderLayerModelObject* ancestorContainer, TransformState&, OptionSet<MapCoordinatesMode>, bool* wasFixed) const;
>+
>+    void applySVGTransform(TransformationMatrix&, SVGGraphicsElement&, const RenderStyle&, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption>) const;
> #endif
> 
>+    void updateLayerTransform();
>+
>     virtual void applyTransform(TransformationMatrix&, const RenderStyle&, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> = RenderStyle::allTransformOperations) const = 0;
> 
> protected:
>diff --git a/Source/WebCore/rendering/RenderObject.cpp b/Source/WebCore/rendering/RenderObject.cpp
>index dca73e895d3daaa5d7019ba4542852cb93a7f138..7027f36706a16f143da5e8cc84790f11ddba9b71 100644
>--- a/Source/WebCore/rendering/RenderObject.cpp
>+++ b/Source/WebCore/rendering/RenderObject.cpp
>@@ -1975,6 +1975,14 @@ void RenderObject::setHasOutlineAutoAncestor(bool hasOutlineAutoAncestor)
>         ensureRareData().setHasOutlineAutoAncestor(hasOutlineAutoAncestor);
> }
> 
>+#if ENABLE(LAYER_BASED_SVG_ENGINE)
>+void RenderObject::setHasSVGTransform(bool hasSVGTransform)
>+{
>+    if (hasSVGTransform || hasRareData())
>+        ensureRareData().setHasSVGTransform(hasSVGTransform);
>+}
>+#endif
>+
> void RenderObject::setPaintContainmentApplies(bool paintContainmentApplies)
> {
>     if (paintContainmentApplies || hasRareData())
>diff --git a/Source/WebCore/rendering/RenderObject.h b/Source/WebCore/rendering/RenderObject.h
>index 58042ec7ff3cc3744b8c4233387c17c624ad0f12..530c431c3ea1a400839d068a8da3bda9931ec208 100644
>--- a/Source/WebCore/rendering/RenderObject.h
>+++ b/Source/WebCore/rendering/RenderObject.h
>@@ -415,6 +415,12 @@ public:
>     bool hasOutlineAutoAncestor() const { return m_bitfields.hasRareData() && rareData().hasOutlineAutoAncestor(); }
>     bool paintContainmentApplies() const { return m_bitfields.hasRareData() && rareData().paintContainmentApplies(); }
> 
>+#if ENABLE(LAYER_BASED_SVG_ENGINE)
>+    bool hasSVGTransform() const { return m_bitfields.hasRareData() && rareData().hasSVGTransform(); }
>+#else
>+    bool hasSVGTransform() const { return false; }
>+#endif
>+
>     bool isExcludedFromNormalLayout() const { return m_bitfields.isExcludedFromNormalLayout(); }
>     void setIsExcludedFromNormalLayout(bool excluded) { m_bitfields.setIsExcludedFromNormalLayout(excluded); }
>     bool isExcludedAndPlacedInBorder() const { return isExcludedFromNormalLayout() && isLegend(); }
>@@ -449,7 +455,7 @@ public:
>     bool hasPotentiallyScrollableOverflow() const;
> 
>     bool hasTransformRelatedProperty() const { return m_bitfields.hasTransformRelatedProperty(); } // Transform, perspective or transform-style: preserve-3d.
>-    bool hasTransform() const { return hasTransformRelatedProperty() && (style().hasTransform() || style().translate() || style().scale() || style().rotate()); }
>+    bool hasTransform() const { return hasTransformRelatedProperty() && (style().hasTransform() || style().translate() || style().scale() || style().rotate() || hasSVGTransform()); }
>     bool hasTransformOrPespective() const { return hasTransformRelatedProperty() && (hasTransform() || style().hasPerspective()); }
> 
>     inline bool preservesNewline() const;
>@@ -514,6 +520,9 @@ public:
>     void setIsRenderFragmentedFlow(bool = true);
>     void setHasOutlineAutoAncestor(bool = true);
>     void setPaintContainmentApplies(bool = true);
>+#if ENABLE(LAYER_BASED_SVG_ENGINE)
>+    void setHasSVGTransform(bool = true);
>+#endif
> 
>     // Hook so that RenderTextControl can return the line height of its inner renderer.
>     // For other renderers, the value is the same as lineHeight(false).
>@@ -943,6 +952,9 @@ private:
>         ADD_BOOLEAN_BITFIELD(isRenderFragmentedFlow, IsRenderFragmentedFlow);
>         ADD_BOOLEAN_BITFIELD(hasOutlineAutoAncestor, HasOutlineAutoAncestor);
>         ADD_BOOLEAN_BITFIELD(paintContainmentApplies, PaintContainmentApplies);
>+#if ENABLE(LAYER_BASED_SVG_ENGINE)
>+        ADD_BOOLEAN_BITFIELD(hasSVGTransform, HasSVGTransform);
>+#endif
> 
>         // From RenderElement
>         std::unique_ptr<ReferencedSVGResources> referencedSVGResources;
>diff --git a/Source/WebCore/rendering/svg/RenderSVGContainer.cpp b/Source/WebCore/rendering/svg/RenderSVGContainer.cpp
>index bdcc5815b46627f0ff1c5a1480240ff657b947ef..345d636134d5fdbcf9267bfcdacc4cf62cb3c6c7 100644
>--- a/Source/WebCore/rendering/svg/RenderSVGContainer.cpp
>+++ b/Source/WebCore/rendering/svg/RenderSVGContainer.cpp
>@@ -52,6 +52,36 @@ RenderSVGContainer::RenderSVGContainer(SVGElement& element, RenderStyle&& style)
> 
> RenderSVGContainer::~RenderSVGContainer() = default;
> 
>+// Helper class, move to its own file once utilized in more than one place.
>+class SVGLayerTransformUpdater {
>+    WTF_MAKE_NONCOPYABLE(SVGLayerTransformUpdater);
>+public:
>+    SVGLayerTransformUpdater(RenderLayerModelObject& renderer)
>+        : m_renderer(renderer)
>+    {
>+        if (!m_renderer.hasLayer())
>+            return;
>+
>+        m_transformReferenceBox = m_renderer.transformReferenceBoxRect();
>+        m_renderer.updateLayerTransform();
>+    }
>+
>+
>+    ~SVGLayerTransformUpdater()
>+    {
>+        if (!m_renderer.hasLayer())
>+            return;
>+        if (m_renderer.transformReferenceBoxRect() == m_transformReferenceBox)
>+            return;
>+
>+        m_renderer.updateLayerTransform();
>+    }
>+
>+private:
>+    RenderLayerModelObject& m_renderer;
>+    FloatRect m_transformReferenceBox;
>+};
>+
> void RenderSVGContainer::layout()
> {
>     StackStats::LayoutCheckPoint layoutCheckPoint;
>@@ -64,13 +94,10 @@ void RenderSVGContainer::layout()
>     // Update layer transform before laying out children (SVG needs access to the transform matrices during layout for on-screen text font-size calculations).
>     // Eventually re-update if the transform reference box, relevant for transform-origin, has changed during layout.
>     {
>-        // FIXME: [LBSE] Upstream SVGLayerTransformUpdater
>-        // SVGLayerTransformUpdater transformUpdater(*this);
>+        SVGLayerTransformUpdater updateTransform(*this);
>         layoutChildren();
>     }
> 
>-    updateLayerInformation();
>-
>     // Invalidate all resources of this client if our layout changed.
>     if (everHadLayout() && needsLayout())
>         SVGResourcesCache::clientLayoutChanged(*this);
>diff --git a/Source/WebCore/rendering/svg/RenderSVGContainer.h b/Source/WebCore/rendering/svg/RenderSVGContainer.h
>index 975a8f62cd03c3213abb854cf74d1665d9c9445c..0194bab13efac7d798489db6fe7537de411a0977 100644
>--- a/Source/WebCore/rendering/svg/RenderSVGContainer.h
>+++ b/Source/WebCore/rendering/svg/RenderSVGContainer.h
>@@ -55,7 +55,6 @@ protected:
>     virtual void layoutChildren();
>     bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
> 
>-    virtual void updateLayerInformation() { }
>     virtual void calculateViewport();
>     virtual bool pointIsInsideViewportClip(const FloatPoint&) { return true; }
> 
>diff --git a/Source/WebCore/rendering/svg/RenderSVGModelObject.cpp b/Source/WebCore/rendering/svg/RenderSVGModelObject.cpp
>index b19294b6758c9d17b6c8509b21ad1714c18934f8..c9695e6b6a43f9cf4ff0395ac361a43261db8e23 100644
>--- a/Source/WebCore/rendering/svg/RenderSVGModelObject.cpp
>+++ b/Source/WebCore/rendering/svg/RenderSVGModelObject.cpp
>@@ -36,6 +36,7 @@
> #include "RenderGeometryMap.h"
> #include "RenderLayer.h"
> #include "RenderLayerModelObject.h"
>+#include "RenderSVGModelObjectInlines.h"
> #include "RenderSVGResource.h"
> #include "RenderView.h"
> #include "SVGElementInlines.h"
>@@ -59,15 +60,13 @@ RenderSVGModelObject::RenderSVGModelObject(SVGElement& element, RenderStyle&& st
> void RenderSVGModelObject::updateFromStyle()
> {
>     RenderLayerModelObject::updateFromStyle();
>-    setHasTransformRelatedProperty(style().hasTransformRelatedProperty());
> 
>-    AffineTransform transform;
>-    if (is<SVGGraphicsElement>(nodeForNonAnonymous()))
>-        transform = downcast<SVGGraphicsElement>(nodeForNonAnonymous()).animatedLocalTransform();
>+    bool hasSVGTransform = false;
>+    if (is<SVGGraphicsElement>(element()))
>+        hasSVGTransform = !downcast<SVGGraphicsElement>(element()).animatedLocalTransform().isIdentity();
> 
>-    // FIXME: [LBSE] Upstream RenderObject changes
>-    // if (!transform.isIdentity())
>-    //     setHasSVGTransform();
>+    setHasTransformRelatedProperty(style().hasTransformRelatedProperty() || hasSVGTransform);
>+    setHasSVGTransform(hasSVGTransform);
> }
> 
> FloatRect RenderSVGModelObject::borderBoxRectInFragmentEquivalent(RenderFragmentContainer*, RenderBox::RenderBoxFragmentInfoFlags) const
>diff --git a/Source/WebCore/rendering/svg/RenderSVGRoot.cpp b/Source/WebCore/rendering/svg/RenderSVGRoot.cpp
>index 716ea8306845933cb8f047ae8a8d9d28501c8d75..80ad807700fa53e012d0f4911919cbab844cede6 100644
>--- a/Source/WebCore/rendering/svg/RenderSVGRoot.cpp
>+++ b/Source/WebCore/rendering/svg/RenderSVGRoot.cpp
>@@ -396,8 +396,7 @@ void RenderSVGRoot::updateFromStyle()
> {
>     RenderReplaced::updateFromStyle();
> 
>-    // FIXME: [LBSE] Upstream RenderObject changes
>-    // setHasSVGTransform();
>+    setHasSVGTransform();
> 
>     if (shouldApplyViewportClip())
>         setHasNonVisibleOverflow();
>diff --git a/Source/WebCore/rendering/svg/RenderSVGShape.cpp b/Source/WebCore/rendering/svg/RenderSVGShape.cpp
>index 3255724190b720afd3668558620160f0f381019e..caaf6b35b0e052003df9201eec0004d54351f406 100644
>--- a/Source/WebCore/rendering/svg/RenderSVGShape.cpp
>+++ b/Source/WebCore/rendering/svg/RenderSVGShape.cpp
>@@ -154,8 +154,7 @@ void RenderSVGShape::layout()
>         setLayoutRect(enclosingLayoutRect(m_fillBoundingBox));
>     }
> 
>-    // FIXME: [LBSE] Upstream SVGLayerTransformUpdater
>-    // SVGRenderSupport::updateLayerTransform(*this);
>+    updateLayerTransform();
> 
>     // Invalidate all resources of this client if our layout changed.
>     if (everHadLayout() && selfNeedsLayout())
>@@ -536,8 +535,7 @@ void RenderSVGShape::styleWillChange(StyleDifference diff, const RenderStyle& ne
> 
> void RenderSVGShape::applyTransform(TransformationMatrix& transform, const RenderStyle& style, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> options) const
> {
>-    // FIXME: [LBSE] Upstream CSS/SVG transform support
>-    style.applyTransform(transform, boundingBox, options);
>+    applySVGTransform(transform, graphicsElement(), style, boundingBox, options);
> }
> 
> }
>diff --git a/Source/WebCore/rendering/svg/RenderSVGShape.h b/Source/WebCore/rendering/svg/RenderSVGShape.h
>index 74368bdaf69f9d161929cb213f1254bac555b9bd..88cfe9ec06689aa25b8535c4398cca9ebf723747 100644
>--- a/Source/WebCore/rendering/svg/RenderSVGShape.h
>+++ b/Source/WebCore/rendering/svg/RenderSVGShape.h
>@@ -82,7 +82,7 @@ public:
> 
>     FloatRect computeMarkerBoundingBox(const SVGBoundingBoxComputation::DecorationOptions&) const;
> 
>-    void applyTransform(TransformationMatrix&, const RenderStyle&, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> = RenderStyle::allTransformOperations) const override;
>+    void applyTransform(TransformationMatrix&, const RenderStyle&, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> = RenderStyle::allTransformOperations) const final;
> 
> protected:
>     void element() const = delete;
>diff --git a/Source/WebCore/rendering/svg/RenderSVGTransformableContainer.cpp b/Source/WebCore/rendering/svg/RenderSVGTransformableContainer.cpp
>index 903122be97c751a3d52a94e77f8ca75f6144c195..b00fb50aa9e0001797fc95508586a6b214077f79 100644
>--- a/Source/WebCore/rendering/svg/RenderSVGTransformableContainer.cpp
>+++ b/Source/WebCore/rendering/svg/RenderSVGTransformableContainer.cpp
>@@ -97,15 +97,13 @@ void RenderSVGTransformableContainer::updateFromStyle()
> {
>     RenderSVGContainer::updateFromStyle();
> 
>-    // FIXME: [LBSE] Upstream CSS/SVG transform support
>-    // if (associatedUseElement(graphicsElement()))
>-    //    setHasSVGTransform();
>+    if (associatedUseElement(graphicsElement()))
>+        setHasSVGTransform();
> }
> 
> void RenderSVGTransformableContainer::applyTransform(TransformationMatrix& transform, const RenderStyle& style, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> options) const
> {
>-    // FIXME: [LBSE] Upstream CSS/SVG transform support
>-    style.applyTransform(transform, boundingBox, options);
>+    applySVGTransform(transform, graphicsElement(), style, boundingBox, options);
> }
> 
> void RenderSVGTransformableContainer::styleWillChange(StyleDifference diff, const RenderStyle& newStyle)
>diff --git a/Source/WebCore/svg/SVGGraphicsElement.cpp b/Source/WebCore/svg/SVGGraphicsElement.cpp
>index 622d67d01a6fa187a8e44d81a2d49f7da98a9572..1dc729c01446dedfc002026ba089ea66c33c173c 100644
>--- a/Source/WebCore/svg/SVGGraphicsElement.cpp
>+++ b/Source/WebCore/svg/SVGGraphicsElement.cpp
>@@ -73,6 +73,15 @@ AffineTransform SVGGraphicsElement::getScreenCTM(StyleUpdateStrategy styleUpdate
> 
> AffineTransform SVGGraphicsElement::animatedLocalTransform() const
> {
>+#if ENABLE(LAYER_BASED_SVG_ENGINE)
>+    // LBSE handles transforms via RenderLayer, no need to handle CSS transforms here.
>+    if (document().settings().layerBasedSVGEngineEnabled()) {
>+        if (m_supplementalTransform)
>+            return *m_supplementalTransform * transform().concatenate();
>+        return transform().concatenate();
>+    }
>+#endif
>+
>     AffineTransform matrix;
> 
>     auto* style = renderer() ? &renderer()->style() : nullptr;

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Attachments on bug 237711: 454350 | 454351 | 454412 | 454559 | 454562 | 454818 | 455227 | 456619 | 456754 | 456902 | 456979 | 457243