Added trace graphics system for painting performance profiling.

When running an application with graphics system trace everything that
gets painted to the window surface is proxied through a QPaintBuffer,
which is then both streamed to a trace file and replayed on a raster
window surface. The trace file can then be replayed with
tools/qttracereplay to measure pure painting performance.

Reviewed-by: Gunnar Sletta

1 files changed, 36 insertions, 0 deletions

diff --git a/src/gui/painting/qpainterpath_p.h b/src/gui/painting/qpainterpath_p.h
index bb455cf..94be339 100644
--- a/src/gui/painting/qpainterpath_p.h
+++ b/src/gui/painting/qpainterpath_p.h
@@ -176,6 +176,42 @@ public:
 };
 
 
+inline const QPainterPath QVectorPath::convertToPainterPath() const
+{
+        QPainterPath path;
+        path.ensureData();
+        QPainterPathData *data = path.d_func();
+        data->elements.reserve(m_count);
+        int index = 0;
+        data->elements[0].x = m_points[index++];
+        data->elements[0].y = m_points[index++];
+
+        if (m_elements) {
+            data->elements[0].type = m_elements[0];
+            for (int i=1; i<m_count; ++i) {
+                QPainterPath::Element element;
+                element.x = m_points[index++];
+                element.y = m_points[index++];
+                element.type = m_elements[i];
+                data->elements << element;
+            }
+        } else {
+            data->elements[0].type = QPainterPath::MoveToElement;
+            for (int i=1; i<m_count; ++i) {
+                QPainterPath::Element element;
+                element.x = m_points[index++];
+                element.y = m_points[index++];
+                element.type = QPainterPath::LineToElement;
+                data->elements << element;
+            }
+        }
+
+        if (m_hints & OddEvenFill)
+            data->fillRule = Qt::OddEvenFill;
+        else
+            data->fillRule = Qt::WindingFill;
+        return path;
+}
 
 void Q_GUI_EXPORT qt_find_ellipse_coords(const QRectF &r, qreal angle, qreal length,
                                          QPointF* startPoint, QPointF *endPoint);