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
img = new org.eclipse.swt.graphics.Image( ( (SwtDisplayServer) _ids ).getDevice( ),
							10,
							10 );
				}
			}
			catch ( Exception ilex )
			{
				throw new ChartException( ChartDeviceSwtActivator.ID,
						ChartException.RENDERING,
						ilex );
			}
		}
		else
		{
			final String sUrl = g.getURL( );
			try
			{
				img = (org.eclipse.swt.graphics.Image) _ids.loadImage( new URL( sUrl ) );
			}
			catch ( MalformedURLException muex )
			{
				throw new ChartException( ChartDeviceSwtActivator.ID,
						ChartException.RENDERING,
						muex );
			}
		}
		Pattern pattern = new Pattern( _gc.getDevice( ), img );
		_gc.setBackgroundPattern( pattern );
		_gc.fillPath( path );