QQuickSpriteEngine: Optimistic speedup for updateSprites

Switch from QList to QVector, and avoid using pop_front -- remove all in one
operation instead.

The idea here was to provide some gain to sprite-sequence in qmlbench, but any
possible gain is pretty miniscule due to the lack of batching that example
suffers. Still, we end up with less CPU time taken, which is a win of sorts.

Change-Id: Ib7c101afa71ee617c3c4506b14701d6a4143ed3a
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/quick/items/qquickspriteengine_p.h b/src/quick/items/qquickspriteengine_p.h
index cf50cd2d84..3b7fcfb1f1 100644
--- a/src/quick/items/qquickspriteengine_p.h
+++ b/src/quick/items/qquickspriteengine_p.h
@@ -254,7 +254,7 @@ protected:
     QVector<int> m_goals;
     QVector<int> m_duration;
     QVector<int> m_startTimes;
-    QList<QPair<uint, QList<int> > > m_stateUpdates;//### This could be done faster - priority queue?
+    QVector<QPair<uint, QVector<int> > > m_stateUpdates;//### This could be done faster - priority queue?
 
     QTime m_advanceTime;
     uint m_timeOffset;