Attachment 346032 Details for Bug 188143 – Patch

[patch] Patch

bug-188143-20180729084604.patch (text/plain), 11.81 KB, created by Simon Fraser (smfr) on 2018-07-29 08:46:05 PDT

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Creator: Simon Fraser (smfr)

Created: 2018-07-29 08:46:05 PDT

Size: 11.81 KB

patch

obsolete

>Subversion Revision: 234343
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index c36ea45c71471cfa7e03f4225f68701f57f572b6..2adfc11b9ff0b6efa8cbbcbb2d3888bdd45caff9 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,38 @@
>+2018-07-28  Simon Fraser  <simon.fraser@apple.com>
>+
>+        Shrink GraphicsLayer by making m_transform and m_childrenTransform be unique_ptrs
>+        https://bugs.webkit.org/show_bug.cgi?id=188143
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        m_transform and m_childrenTransform are usually identity; save space by making
>+        these unique_ptrs. The getters still return references by returning a reference
>+        to a NeverDestroyed<TransformationMatrix> if necessary.
>+        
>+        Shrinks GraphicsLayerCA from 840 to 640 bytes.
>+
>+        * platform/graphics/GraphicsLayer.cpp:
>+        (WebCore::identityTransform):
>+        (WebCore::GraphicsLayer::transform const):
>+        (WebCore::GraphicsLayer::setTransform):
>+        (WebCore::GraphicsLayer::childrenTransform const):
>+        (WebCore::GraphicsLayer::setChildrenTransform):
>+        (WebCore::GraphicsLayer::dumpProperties const):
>+        * platform/graphics/GraphicsLayer.h:
>+        (WebCore::GraphicsLayer::hasNonIdentityTransform const):
>+        (WebCore::GraphicsLayer::hasNonIdentityChildrenTransform const):
>+        (WebCore::GraphicsLayer::transform const): Deleted.
>+        (WebCore::GraphicsLayer::setTransform): Deleted.
>+        (WebCore::GraphicsLayer::childrenTransform const): Deleted.
>+        (WebCore::GraphicsLayer::setChildrenTransform): Deleted.
>+        * platform/graphics/ca/GraphicsLayerCA.cpp:
>+        (WebCore::GraphicsLayerCA::setTransform):
>+        (WebCore::GraphicsLayerCA::setChildrenTransform):
>+        (WebCore::GraphicsLayerCA::layerTransform const):
>+        (WebCore::GraphicsLayerCA::updateTransform):
>+        (WebCore::GraphicsLayerCA::updateChildrenTransform):
>+        (WebCore::GraphicsLayerCA::removeCAAnimationFromLayer):
>+
> 2018-07-28  Simon Fraser  <simon.fraser@apple.com>
> 
>         Shrink GraphicsLayerCA
>diff --git a/Source/WebCore/platform/graphics/GraphicsLayer.cpp b/Source/WebCore/platform/graphics/GraphicsLayer.cpp
>index 90022e6a817a681ee2df64bb436a9212ea5603f0..b9641bb536e0720164c49afa3dc83e7ed542ae17 100644
>--- a/Source/WebCore/platform/graphics/GraphicsLayer.cpp
>+++ b/Source/WebCore/platform/graphics/GraphicsLayer.cpp
>@@ -292,6 +292,38 @@ void GraphicsLayer::removeFromParent()
>     }
> }
> 
>+static const TransformationMatrix& identityTransform()
>+{
>+    static NeverDestroyed<TransformationMatrix> identityTransform;
>+    return identityTransform;
>+}
>+
>+const TransformationMatrix& GraphicsLayer::transform() const
>+{
>+    return m_transform ? *m_transform : identityTransform();
>+}
>+
>+void GraphicsLayer::setTransform(const TransformationMatrix& matrix)
>+{
>+    if (m_transform)
>+        *m_transform = matrix;
>+    else
>+        m_transform = std::make_unique<TransformationMatrix>(matrix);
>+}
>+
>+const TransformationMatrix& GraphicsLayer::childrenTransform() const
>+{
>+    return m_childrenTransform ? *m_childrenTransform : identityTransform();
>+}
>+
>+void GraphicsLayer::setChildrenTransform(const TransformationMatrix& matrix)
>+{
>+    if (m_childrenTransform)
>+        *m_childrenTransform = matrix;
>+    else
>+        m_childrenTransform = std::make_unique<TransformationMatrix>(matrix);
>+}
>+
> void GraphicsLayer::setMaskLayer(GraphicsLayer* layer)
> {
>     if (layer == m_maskLayer)
>@@ -775,22 +807,22 @@ void GraphicsLayer::dumpProperties(TextStream& ts, LayerTreeAsTextBehavior behav
>     if (behavior & LayerTreeAsTextIncludeBackingStoreAttached)
>         ts << indent << "(backingStoreAttached " << backingStoreAttachedForTesting() << ")\n";
> 
>-    if (!m_transform.isIdentity()) {
>+    if (m_transform && !m_transform->isIdentity()) {
>         ts << indent << "(transform ";
>-        ts << "[" << m_transform.m11() << " " << m_transform.m12() << " " << m_transform.m13() << " " << m_transform.m14() << "] ";
>-        ts << "[" << m_transform.m21() << " " << m_transform.m22() << " " << m_transform.m23() << " " << m_transform.m24() << "] ";
>-        ts << "[" << m_transform.m31() << " " << m_transform.m32() << " " << m_transform.m33() << " " << m_transform.m34() << "] ";
>-        ts << "[" << m_transform.m41() << " " << m_transform.m42() << " " << m_transform.m43() << " " << m_transform.m44() << "])\n";
>+        ts << "[" << m_transform->m11() << " " << m_transform->m12() << " " << m_transform->m13() << " " << m_transform->m14() << "] ";
>+        ts << "[" << m_transform->m21() << " " << m_transform->m22() << " " << m_transform->m23() << " " << m_transform->m24() << "] ";
>+        ts << "[" << m_transform->m31() << " " << m_transform->m32() << " " << m_transform->m33() << " " << m_transform->m34() << "] ";
>+        ts << "[" << m_transform->m41() << " " << m_transform->m42() << " " << m_transform->m43() << " " << m_transform->m44() << "])\n";
>     }
> 
>     // Avoid dumping the sublayer transform on the root layer, because it's used for geometry flipping, whose behavior
>     // differs between platforms.
>-    if (parent() && !m_childrenTransform.isIdentity()) {
>+    if (parent() && m_childrenTransform && !m_childrenTransform->isIdentity()) {
>         ts << indent << "(childrenTransform ";
>-        ts << "[" << m_childrenTransform.m11() << " " << m_childrenTransform.m12() << " " << m_childrenTransform.m13() << " " << m_childrenTransform.m14() << "] ";
>-        ts << "[" << m_childrenTransform.m21() << " " << m_childrenTransform.m22() << " " << m_childrenTransform.m23() << " " << m_childrenTransform.m24() << "] ";
>-        ts << "[" << m_childrenTransform.m31() << " " << m_childrenTransform.m32() << " " << m_childrenTransform.m33() << " " << m_childrenTransform.m34() << "] ";
>-        ts << "[" << m_childrenTransform.m41() << " " << m_childrenTransform.m42() << " " << m_childrenTransform.m43() << " " << m_childrenTransform.m44() << "])\n";
>+        ts << "[" << m_childrenTransform->m11() << " " << m_childrenTransform->m12() << " " << m_childrenTransform->m13() << " " << m_childrenTransform->m14() << "] ";
>+        ts << "[" << m_childrenTransform->m21() << " " << m_childrenTransform->m22() << " " << m_childrenTransform->m23() << " " << m_childrenTransform->m24() << "] ";
>+        ts << "[" << m_childrenTransform->m31() << " " << m_childrenTransform->m32() << " " << m_childrenTransform->m33() << " " << m_childrenTransform->m34() << "] ";
>+        ts << "[" << m_childrenTransform->m41() << " " << m_childrenTransform->m42() << " " << m_childrenTransform->m43() << " " << m_childrenTransform->m44() << "])\n";
>     }
> 
>     if (m_maskLayer) {
>diff --git a/Source/WebCore/platform/graphics/GraphicsLayer.h b/Source/WebCore/platform/graphics/GraphicsLayer.h
>index b501a8f0ea276f28ccf76cd02d7649fedf216367..f11ca942c5cd2f7594e260432b194776218bb6ac 100644
>--- a/Source/WebCore/platform/graphics/GraphicsLayer.h
>+++ b/Source/WebCore/platform/graphics/GraphicsLayer.h
>@@ -339,11 +339,13 @@ public:
>     // For platforms that move underlying platform layers on a different thread for scrolling; just update the GraphicsLayer state.
>     virtual void syncBoundsOrigin(const FloatPoint& origin) { m_boundsOrigin = origin; }
> 
>-    const TransformationMatrix& transform() const { return m_transform; }
>-    virtual void setTransform(const TransformationMatrix& t) { m_transform = t; }
>+    const TransformationMatrix& transform() const;
>+    virtual void setTransform(const TransformationMatrix&);
>+    bool hasNonIdentityTransform() const { return m_transform && !m_transform->isIdentity(); }
> 
>-    const TransformationMatrix& childrenTransform() const { return m_childrenTransform; }
>-    virtual void setChildrenTransform(const TransformationMatrix& t) { m_childrenTransform = t; }
>+    const TransformationMatrix& childrenTransform() const;
>+    virtual void setChildrenTransform(const TransformationMatrix&);
>+    bool hasNonIdentityChildrenTransform() const { return m_childrenTransform && !m_childrenTransform->isIdentity(); }
> 
>     bool preserves3D() const { return m_preserves3D; }
>     virtual void setPreserves3D(bool b) { m_preserves3D = b; }
>@@ -638,8 +640,8 @@ protected:
>     FloatSize m_size;
>     FloatPoint m_boundsOrigin;
> 
>-    TransformationMatrix m_transform;
>-    TransformationMatrix m_childrenTransform;
>+    std::unique_ptr<TransformationMatrix> m_transform;
>+    std::unique_ptr<TransformationMatrix> m_childrenTransform;
> 
>     Color m_backgroundColor;
>     float m_opacity { 1 };
>diff --git a/Source/WebCore/platform/graphics/ca/GraphicsLayerCA.cpp b/Source/WebCore/platform/graphics/ca/GraphicsLayerCA.cpp
>index ff4b03c2128de8b3a98c2a4d81758cee77cff93b..533bd44a1c9d82d76bc0919b5f16d2a6b28a86e3 100644
>--- a/Source/WebCore/platform/graphics/ca/GraphicsLayerCA.cpp
>+++ b/Source/WebCore/platform/graphics/ca/GraphicsLayerCA.cpp
>@@ -654,7 +654,7 @@ void GraphicsLayerCA::syncBoundsOrigin(const FloatPoint& origin)
> 
> void GraphicsLayerCA::setTransform(const TransformationMatrix& t)
> {
>-    if (t == m_transform)
>+    if (t == transform())
>         return;
> 
>     GraphicsLayer::setTransform(t);
>@@ -663,7 +663,7 @@ void GraphicsLayerCA::setTransform(const TransformationMatrix& t)
> 
> void GraphicsLayerCA::setChildrenTransform(const TransformationMatrix& t)
> {
>-    if (t == m_childrenTransform)
>+    if (t == childrenTransform())
>         return;
> 
>     GraphicsLayer::setChildrenTransform(t);
>@@ -1338,7 +1338,11 @@ TransformationMatrix GraphicsLayerCA::layerTransform(const FloatPoint& position,
>     TransformationMatrix transform;
>     transform.translate(position.x(), position.y());
> 
>-    TransformationMatrix currentTransform = customTransform ? *customTransform : m_transform;
>+    TransformationMatrix currentTransform;
>+    if (customTransform)
>+        currentTransform = *customTransform;
>+    else if (m_transform)
>+        currentTransform = *m_transform;
>     
>     if (!currentTransform.isIdentity()) {
>         FloatPoint3D absoluteAnchorPoint(anchorPoint());
>@@ -1349,7 +1353,7 @@ TransformationMatrix GraphicsLayerCA::layerTransform(const FloatPoint& position,
>     }
> 
>     if (GraphicsLayer* parentLayer = parent()) {
>-        if (!parentLayer->childrenTransform().isIdentity()) {
>+        if (parentLayer->hasNonIdentityChildrenTransform()) {
>             FloatPoint3D parentAnchorPoint(parentLayer->anchorPoint());
>             parentAnchorPoint.scale(parentLayer->size().width(), parentLayer->size().height(), 1);
> 
>@@ -2016,7 +2020,7 @@ void GraphicsLayerCA::updateGeometry(float pageScaleFactor, const FloatPoint& po
> 
> void GraphicsLayerCA::updateTransform()
> {
>-    primaryLayer()->setTransform(m_transform);
>+    primaryLayer()->setTransform(transform());
> 
>     if (LayerMap* layerCloneMap = primaryLayerClones()) {
>         for (auto& clone : *layerCloneMap) {
>@@ -2026,18 +2030,18 @@ void GraphicsLayerCA::updateTransform()
>                 // which we set up in replicatedLayerRoot().
>                 currLayer->setTransform(TransformationMatrix());
>             } else
>-                currLayer->setTransform(m_transform);
>+                currLayer->setTransform(transform());
>         }
>     }
> }
> 
> void GraphicsLayerCA::updateChildrenTransform()
> {
>-    primaryLayer()->setSublayerTransform(m_childrenTransform);
>+    primaryLayer()->setSublayerTransform(childrenTransform());
> 
>     if (LayerMap* layerCloneMap = primaryLayerClones()) {
>         for (auto& layer : layerCloneMap->values())
>-            layer->setSublayerTransform(m_childrenTransform);
>+            layer->setSublayerTransform(childrenTransform());
>     }
> }
> 
>@@ -2911,7 +2915,7 @@ bool GraphicsLayerCA::removeCAAnimationFromLayer(AnimatedPropertyID property, co
>         return false;
>     
>     layer->removeAnimationForKey(animationID);
>-    bug7311367Workaround(m_structuralLayer.get(), m_transform);
>+    bug7311367Workaround(m_structuralLayer.get(), transform());
> 
>     if (LayerMap* layerCloneMap = animatedLayerClones(property)) {
>         for (auto& clone : *layerCloneMap) {

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Attachments on bug 188143: 346010 | 346013 | 346014 | 346032 | 346033