Wrong opacity set on the painter in QGraphicsEffect::draw.

We have to initialize the painter with the 'effected' item's
opacity before calling QGraphicsEffect::draw; otherwise we'll
use the previous rendered item's opacity (which is wrong).

Reviewed-by: Michael Brasser

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index 0fd1647..fbd78d9 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -4460,6 +4460,7 @@ void QGraphicsScenePrivate::drawSubtreeRecursive(QGraphicsItem *item, QPainter *
             painter->setWorldTransform(*transformPtr * *effectTransform);
         else
             painter->setWorldTransform(*transformPtr);
+        painter->setOpacity(opacity);
         item->d_ptr->graphicsEffect->draw(painter, source);
         painter->setWorldTransform(restoreTransform);
         sourced->info = 0;