Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/swing/SwingRendererImpl.java
final int[][] i2a = getCoordinatesAsInts( la );
		Stroke sPrevious = null;
		final Stroke sCurrent = getCachedStroke( lia );
		if ( sCurrent != null ) 
		{
			sPrevious = _g2d.getStroke( );
			_g2d.setStroke( sCurrent );
		}
		_g2d.setColor( cFG );
		_g2d.draw( new Polygon( i2a[0], i2a[1], la.length ) );
		if ( sPrevious != null ) 
		{
			_g2d.setStroke( sPrevious );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.output.IPrimitiveRenderListener#fillPolygon(org.eclipse.birt.chart.output.PolygonRenderEvent)
	 */
	public void fillPolygon( PolygonRenderEvent pre ) throws ChartException
	{
		if ( iv != null )
		{
			iv.modifyEvent( pre );
		}
		final Fill flBackground = validateMultipleFill( pre.getBackground( ) );
		if ( isFullTransparent( flBackground ) )
		{
			return;