4 files changed, 25 insertions, 16 deletions

diff --git a/src/gui/graphicsview/qgraphicsanchorlayout_p.h b/src/gui/graphicsview/qgraphicsanchorlayout_p.h
index b64f787..098407c 100644
--- a/src/gui/graphicsview/qgraphicsanchorlayout_p.h
+++ b/src/gui/graphicsview/qgraphicsanchorlayout_p.h
@@ -170,7 +170,7 @@ struct AnchorData : public QSimplexVariable {
           skipInPreferred(0), type(Normal), hasSize(false),
           isLayoutAnchor(false) {}
 
-    virtual void updateChildrenSizes() { };
+    virtual void updateChildrenSizes() {}
     virtual void refreshSizeHints(qreal effectiveSpacing);
 
     virtual ~AnchorData() {}
@@ -299,7 +299,7 @@ struct ParallelAnchorData : public AnchorData
 class GraphPath
 {
 public:
-    GraphPath() {};
+    GraphPath() {}
 
     QSimplexConstraint *constraint(const GraphPath &path) const;
 #ifdef QT_DEBUG
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index b7c2e26..cdcb0c4 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -303,13 +303,17 @@
     drop shadow effects and for decoration objects that follow the parent
     item's geometry without drawing on top of it.
 
-    \value ItemUsesExtendedStyleOption The item makes use of either the
-    exposedRect or matrix member of the QStyleOptionGraphicsItem. Implementers
-    of QGraphicsItem subclasses should set that flag if this data is required.
-    By default, the exposedRect is initialized to the item's boundingRect and
-    the matrix is untransformed. Enable this flag for more fine-grained values.
-    Use QStyleOptionGraphicsItem::levelOfDetailFromTransform() for a more
-    fine-grained value.
+    \value ItemUsesExtendedStyleOption The item makes use of either
+    \l{QStyleOptionGraphicsItem::}{exposedRect} or
+    \l{QStyleOptionGraphicsItem::}{matrix} in QStyleOptionGraphicsItem. By default,
+    the \l{QStyleOptionGraphicsItem::}{exposedRect} is initialized to the item's
+    boundingRect() and the \l{QStyleOptionGraphicsItem::}{matrix} is untransformed.
+    You can enable this flag for the style options to be set up with more
+    fine-grained values.
+    Note that QStyleOptionGraphicsItem::levelOfDetail is unaffected by this flag
+    and always initialized to 1. Use
+    QStyleOptionGraphicsItem::levelOfDetailFromTransform() if you need a higher
+    value.
 
     \value ItemHasNoContents The item does not paint anything (i.e., calling
     paint() on the item has no effect). You should set this flag on items that
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index 2ac1dca..5dd71e2 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -4616,7 +4616,8 @@ void QGraphicsScenePrivate::markDirty(QGraphicsItem *item, const QRectF &rect, b
         return;
     }
 
-    bool hasNoContents = item->d_ptr->flags & QGraphicsItem::ItemHasNoContents;
+    bool hasNoContents = item->d_ptr->flags & QGraphicsItem::ItemHasNoContents
+                         && !item->d_ptr->graphicsEffect;
     if (!hasNoContents) {
         item->d_ptr->dirty = 1;
         if (fullItemUpdate)
@@ -4706,11 +4707,15 @@ void QGraphicsScenePrivate::processDirtyItemsRecursive(QGraphicsItem *item, bool
         return;
     }
 
-    const bool itemHasContents = !(item->d_ptr->flags & QGraphicsItem::ItemHasNoContents);
+    bool itemHasContents = !(item->d_ptr->flags & QGraphicsItem::ItemHasNoContents);
     const bool itemHasChildren = !item->d_ptr->children.isEmpty();
-    if (!itemHasContents && !itemHasChildren) {
-        resetDirtyItem(item);
-        return; // Item has neither contents nor children!(?)
+    if (!itemHasContents) {
+        if (!itemHasChildren) {
+            resetDirtyItem(item);
+            return; // Item has neither contents nor children!(?)
+        }
+        if (item->d_ptr->graphicsEffect)
+            itemHasContents = true;
     }
 
     const qreal opacity = item->d_ptr->combineOpacityFromParent(parentOpacity);
diff --git a/src/gui/graphicsview/qsimplex_p.h b/src/gui/graphicsview/qsimplex_p.h
index 9ee3863..eac74ac 100644
--- a/src/gui/graphicsview/qsimplex_p.h
+++ b/src/gui/graphicsview/qsimplex_p.h
@@ -60,7 +60,7 @@ QT_BEGIN_NAMESPACE
 
 struct QSimplexVariable
 {
-    QSimplexVariable() : result(0), index(0) {};
+    QSimplexVariable() : result(0), index(0) {}
 
     qreal result;
     uint index;
@@ -80,7 +80,7 @@ struct QSimplexVariable
 */
 struct QSimplexConstraint
 {
-    QSimplexConstraint() : constant(0), ratio(Equal), artificial(0) {};
+    QSimplexConstraint() : constant(0), ratio(Equal), artificial(0) {}
 
     enum Ratio {
         LessOrEqual = 0,