QT 5.3 PaintEngine problem

[Alundra]

Hi all,
To avoid flickering I used this way :

QPaintEngine* IRenderWidget::paintEngine() const
{
  return NULL;
}

QPaintEngine* IRenderWidget::paintEngine() const
{
  return NULL;
}

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Here my constructor :

IRenderWidget::IRenderWidget( QWidget* Parent ) :
QWidget( Parent ),
m_Initialized( false ),
m_RenderWindow( NULL )
{
  // Initialize the widget.
  setMinimumSize( 320, 240 );
  setAttribute( Qt::WA_PaintOnScreen );
  setAttribute( Qt::WA_OpaquePaintEvent );
  setAttribute( Qt::WA_NoSystemBackground );
  setFocusPolicy( Qt::StrongFocus );
  setMouseTracking( true );
 
  // Set the timer interval.
  m_Timer.setInterval( 10 );
}

IRenderWidget::IRenderWidget( QWidget* Parent ) :
QWidget( Parent ),
m_Initialized( false ),
m_RenderWindow( NULL )
{
  // Initialize the widget.
  setMinimumSize( 320, 240 );
  setAttribute( Qt::WA_PaintOnScreen );
  setAttribute( Qt::WA_OpaquePaintEvent );
  setAttribute( Qt::WA_NoSystemBackground );
  setFocusPolicy( Qt::StrongFocus );
  setMouseTracking( true );

  // Set the timer interval.
  m_Timer.setInterval( 10 );
}

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I moved to QT 5.3 RC and then no result and if I don't override I have result but the flickering is there.
My widget is to link a 3D engine to a QWidget.
Thanks for the help

[Alundra]

https://bugreports.qt-project.org/browse/QTBUG-38963
I added that like a bug, hope a fix soon.

[Alundra]

hmm... I searched a lot and no real solution found, it's weird since QT 5.1 worked good.