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
{
		iv.modifyEvent( rre  );
		final Fill flBackground = validateMultipleFill( rre.getBackground( ) );
		if ( isFullTransparent( flBackground ) )
		{
			return;
		}
		final Bounds bo = normalizeBounds( rre.getBounds( ) );
		final Rectangle r = new Rectangle( (int) ( ( bo.getLeft( ) + dTranslateX ) * dScale ),
				(int) ( ( bo.getTop( ) + dTranslateY ) * dScale ),
				(int) Math.ceil( bo.getWidth( ) * dScale ),
				(int) Math.ceil( bo.getHeight( ) * dScale ) );
		final Path pt = new Path( ( (SwtDisplayServer) _ids ).getDevice( ) );
		pt.moveTo( r.x, r.y );
		pt.lineTo( r.x, r.y + r.height );
		pt.lineTo( r.x + r.width, r.y + r.height );
		pt.lineTo( r.x + r.width, r.y );
		try
		{
			if ( flBackground instanceof ColorDefinition )
			{				
				fillPathColor( pt, (ColorDefinition) flBackground );
			}
			if ( flBackground instanceof Gradient )
			{
				fillPathGradient( pt, (Gradient) flBackground, r );
			}
			else if ( flBackground instanceof org.eclipse.birt.chart.model.attribute.Image )
			{
				fillPathImage( pt,