Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/PlotWith2DAxes.java
boPlotBackground.setWidth( daX[0]
					- daX[1]
					+ insCA.getLeft( )
					+ insCA.getRight( )
					+ 1 );
		}
		else
		{
			boPlotBackground.setLeft( daX[0] - insCA.getLeft( ) );
			boPlotBackground.setWidth( daX[1]
					- daX[0]
					+ insCA.getLeft( )
					+ insCA.getRight( )
					+ 1 );
		}
		if ( axPV.getScale( ).getDirection( ) == FORWARD )
		{
			boPlotBackground.setTop( daY[0] - insCA.getTop( ) );
			boPlotBackground.setHeight( daY[1]
					- daY[0]
					+ insCA.getTop( )
					+ insCA.getBottom( )
					+ 1 );
		}
		else
		{
			boPlotBackground.setTop( daY[1] - insCA.getTop( ) );
			boPlotBackground.setHeight( daY[0]
					- daY[1]
					+ insCA.getTop( )