Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderer.java
public final void renderPlot( IPrimitiveRenderer ipr, Plot p )
			throws ChartException
	{
		if ( !p.isVisible( ) ) 
		{
			return;
		}
		final boolean bFirstInSequence = ( iSeriesIndex == 0 );
		final boolean bLastInSequence = ( iSeriesIndex == iSeriesCount - 1 );
		final PlotWithAxes pwa = (PlotWithAxes) getComputations( );
		if ( bFirstInSequence )
		{
			renderBackground( ipr, p );
			renderAxesStructure( ipr, p );
		}
		if ( getSeries( ) != null )
		{
			ScriptHandler.callFunction( getRunTimeContext( ).getScriptHandler( ),
					ScriptHandler.BEFORE_DRAW_SERIES,
					getSeries( ),
					this,
					getRunTimeContext( ).getScriptContext( ) );
			getRunTimeContext( ).notifyStructureChange( IStructureDefinitionListener.BEFORE_DRAW_SERIES,
					getSeries( ) );
			
			
			if ( p.getClientArea( ).isVisible( ) )
			{
				
				renderSeries( ipr, p, srh );