Improve scissor clipping in the OpenVG engine

If the scissor is being used to clip instead of the mask, use the
bounding rectangle of the clip path if it cannot be handled as a
simple rectangle.

Reviewed-by: trustme

1 files changed, 4 insertions, 0 deletions

diff --git a/src/openvg/qpaintengine_vg.cpp b/src/openvg/qpaintengine_vg.cpp
index 2a506bb..e0c99d7 100644
--- a/src/openvg/qpaintengine_vg.cpp
+++ b/src/openvg/qpaintengine_vg.cpp
@@ -1554,6 +1554,10 @@ void QVGPaintEngine::clip(const QVectorPath &path, Qt::ClipOperation op)
         QRectF rect(points[0], points[1], points[2] - points[0],
                     points[5] - points[1]);
         clip(rect.toRect(), op);
+    } else {
+        // The best we can do is clip to the bounding rectangle
+        // of all control points.
+        clip(path.controlPointRect().toRect(), op);
     }
 }