Implement QRasterPaintEngine::clip(QRegion) to do something sensible...

Since we now store QRegion's in the clipdata is possible for us to
detect that we should go back to a rect-clip mode when we get to
clip(region) or clip(rect)

It turns out that the qt_span_fill_clipRegion is very slow, even for
smaller regions, testcase was 3 rects, its 10% worse than span based
clipping. For a fullscreen ellipse it was more in the range of 100x
worse, so I removed the clip function entirely.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/gui/painting/qpaintengine_raster_p.h b/src/gui/painting/qpaintengine_raster_p.h
index 26a2b3f..1f3f006 100644
--- a/src/gui/painting/qpaintengine_raster_p.h
+++ b/src/gui/painting/qpaintengine_raster_p.h
@@ -202,7 +202,6 @@ public:
     void clip(const QVectorPath &path, Qt::ClipOperation op);
     void clip(const QRect &rect, Qt::ClipOperation op);
     void clip(const QRegion &region, Qt::ClipOperation op);
-    void clip(const QPainterPath &path, Qt::ClipOperation op);
 
     enum ClipType {
         RectClip,