qt.scenegraph.renderloop:                     (RT) syncAndRender()
qt.scenegraph.renderloop:                     (RT) - updatePending, doing sync
qt.scenegraph.renderloop:                     (RT) sync()
qt.scenegraph.renderloop: update from item Custom(0x14ea5e0)
qt.scenegraph.renderloop: - on render thread
qt.scenegraph.renderloop:                     (RT) - renderer was created
qt.scenegraph.renderloop:                     (RT) - rendering started
qt.scenegraph.renderloop:                     (RT) - rendering done
qt.scenegraph.renderloop:                     (RT) - wake Gui after initial expose
qt.scenegraph.renderloop:                     (RT) --- begin processEvents()
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop:                     (RT) --- done processEvents()
qt.scenegraph.renderloop: - posting update
qt.scenegraph.renderloop:                     (RT) done drawing, sleep...
qt.scenegraph.renderloop: - done with handleExposure()
qt.scenegraph.renderloop:                     (RT) --- begin processEventsAndWaitForMore()
qt.scenegraph.renderloop: exposureChanged() Custom(0x14ea5e0)
qt.scenegraph.renderloop: handleExposure() Custom(0x14ea5e0)
qt.scenegraph.renderloop: - render thread already running
qt.scenegraph.renderloop: polishAndSync (in expose) Custom(0x14ea5e0)
qt.scenegraph.renderloop: - lock for sync
qt.scenegraph.renderloop: - wait for sync
qt.scenegraph.renderloop:                     (RT) WM_RequestSync
qt.scenegraph.renderloop:                     (RT) - triggered from expose
qt.scenegraph.renderloop:                     (RT) --- done processEventsAndWaitForMore()
qt.scenegraph.renderloop:                     (RT) syncAndRender()
qt.scenegraph.renderloop:                     (RT) - updatePending, doing sync
qt.scenegraph.renderloop:                     (RT) sync()
qt.scenegraph.renderloop:                     (RT) - rendering started
qt.scenegraph.renderloop:                     (RT) - rendering done
qt.scenegraph.renderloop:                     (RT) - wake Gui after initial expose
qt.scenegraph.renderloop:                     (RT) --- begin processEvents()
qt.scenegraph.renderloop:                     (RT) --- done processEvents()
qt.scenegraph.renderloop: - unlock after sync
qt.scenegraph.renderloop:                     (RT) done drawing, sleep...
qt.scenegraph.renderloop:                     (RT) --- begin processEventsAndWaitForMore()
qt.scenegraph.renderloop: - done with handleExposure()