3 files changed, 43 insertions, 5 deletions
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
index 866d1a2..1fe3999 100644
--- a/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray.cpp
@@ -67,7 +67,30 @@ void QGL2PEXVertexArray::addRect(const QRectF &rect)
                 << rect.bottomRight() << rect.bottomLeft() << rect.topLeft();
 }
 
-void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseScale)
+void QGL2PEXVertexArray::addClosingLine(int index)
+{
+    if (QPointF(vertexArray.at(index)) != QPointF(vertexArray.last()))
+        vertexArray.add(vertexArray.at(index));
+}
+
+void QGL2PEXVertexArray::addCentroid(const QVectorPath &path, int subPathIndex)
+{
+    const QPointF *const points = reinterpret_cast<const QPointF *>(path.points());
+    const QPainterPath::ElementType *const elements = path.elements();
+
+    QPointF sum = points[subPathIndex];
+    int count = 1;
+
+    for (int i = subPathIndex + 1; i < path.elementCount() && (!elements || elements[i] != QPainterPath::MoveToElement); ++i) {
+        sum += points[i];
+        ++count;
+    }
+
+    const QPointF centroid = sum / qreal(count);
+    vertexArray.add(centroid);
+}
+
+void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseScale, bool outline)
 {
     const QPointF* const points = reinterpret_cast<const QPointF*>(path.points());
     const QPainterPath::ElementType* const elements = path.elements();
@@ -78,6 +101,10 @@ void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseSc
         boundingRectDirty = false;
     }
 
+    if (!outline)
+        addCentroid(path, 0);
+
+    int lastMoveTo = vertexArray.size();
     vertexArray.add(points[0]); // The first element is always a moveTo
 
     do {
@@ -96,8 +123,14 @@ void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseSc
             const QPainterPath::ElementType elementType = elements[i];
             switch (elementType) {
             case QPainterPath::MoveToElement:
+                if (!outline)
+                    addClosingLine(lastMoveTo);
 //                qDebug("element[%d] is a MoveToElement", i);
                 vertexArrayStops.append(vertexArray.size());
+                if (!outline) {
+                    addCentroid(path, i);
+                    lastMoveTo = vertexArray.size();
+                }
                 lineToArray(points[i].x(), points[i].y()); // Add the moveTo as a new vertex
                 break;
             case QPainterPath::LineToElement:
@@ -115,6 +148,8 @@ void QGL2PEXVertexArray::addPath(const QVectorPath &path, GLfloat curveInverseSc
         }
     } while (0);
 
+    if (!outline)
+        addClosingLine(lastMoveTo);
     vertexArrayStops.append(vertexArray.size());
 }
 
diff --git a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
index 08ce234..719904f 100644
--- a/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
+++ b/src/opengl/gl2paintengineex/qgl2pexvertexarray_p.h
@@ -104,7 +104,7 @@ public:
         boundingRectDirty(true) {}
 
     void addRect(const QRectF &rect);
-    void addPath(const QVectorPath &path, GLfloat curveInverseScale);
+    void addPath(const QVectorPath &path, GLfloat curveInverseScale, bool outline = true);
     void clear();
 
     QGLPoint*        data() {return vertexArray.data();}
@@ -124,6 +124,9 @@ private:
     bool        boundingRectDirty;
 
     inline void curveToArray(const QGLPoint &cp1, const QGLPoint &cp2, const QGLPoint &ep, GLfloat inverseScale);
+
+    void addClosingLine(int index);
+    void addCentroid(const QVectorPath &path, int subPathIndex);
 };
 
 QT_END_NAMESPACE
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index b3638ff..ab02c69 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -880,13 +880,13 @@ void QGL2PaintEngineExPrivate::fill(const QVectorPath& path)
              || path.shape() == QVectorPath::ConvexPolygonHint)
     {
         vertexCoordinateArray.clear();
-        vertexCoordinateArray.addPath(path, inverseScale);
+        vertexCoordinateArray.addPath(path, inverseScale, false);
         prepareForDraw(currentBrush->isOpaque());
         drawVertexArrays(vertexCoordinateArray, GL_TRIANGLE_FAN);
     } else {
         // The path is too complicated & needs the stencil technique
         vertexCoordinateArray.clear();
-        vertexCoordinateArray.addPath(path, inverseScale);
+        vertexCoordinateArray.addPath(path, inverseScale, false);
 
         fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill());
 
@@ -1825,7 +1825,7 @@ void QGL2PaintEngineExPrivate::writeClip(const QVectorPath &path, uint value)
         glStencilFunc(GL_ALWAYS, 0, 0xff);
 
     vertexCoordinateArray.clear();
-    vertexCoordinateArray.addPath(path, inverseScale);
+    vertexCoordinateArray.addPath(path, inverseScale, false);
 
     if (!singlePass)
         fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill());