Only polish once pr frame
Only polish once pr frame

Change-Id: I7295d0936dd220c092ed6c78b19fdf8ee3a3ce23
Reviewed-on: http://codereview.qt-project.org/4465
Reviewed-by: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>
Reviewed-by: Matthew Cattell <295f8dd046c2f7ddf014c34ef24a63791d9cfc63@nokia.com>

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