Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.device.swt/src/org/eclipse/birt/chart/device/swt/SwtRendererImpl.java
if ( points.length < 1 )
		{
			return;
		}
		final Path pt = new Path( ( (SwtDisplayServer) _ids ).getDevice( ) );
		pt.moveTo( points[0], points[1] );
		for ( int i = 1; i < points.length / 2; i++ )
		{
			pt.lineTo( points[2 * i], points[2 * i + 1] );
		}
		
		try
		{
			if ( flBackground instanceof ColorDefinition )
			{
				fillPathColor( pt, (ColorDefinition) flBackground );
			}
			else if ( flBackground instanceof Gradient )
			{
				fillPathGradient( pt, (Gradient) flBackground, r );
			}
			else if ( flBackground instanceof org.eclipse.birt.chart.model.attribute.Image )
			{
				fillPathImage( pt,
						(org.eclipse.birt.chart.model.attribute.Image) flBackground );
			}
		}
		finally
		{
			pt.dispose( );