Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/swing/SwingRendererImpl.java
/ szImage.getWidth( ) ) );
			final int iYRepeat = (int) ( Math.ceil( ( dMaxY - dMinY )
					/ szImage.getHeight( ) ) );
			final ImageObserver io = (ImageObserver) _ids.getObserver( );
			for ( int i = 0; i < iXRepeat; i++ )
			{
				for ( int j = 0; j < iYRepeat; j++ )
				{
					_g2d.drawImage( img,
							(int) ( dMinX + i * szImage.getWidth( ) ),
							(int) ( dMinY + j * szImage.getHeight( ) ),
							io );
				}
			}
			_g2d.setClip( shClip ); 
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.output.IPrimitiveRenderListener#drawArc(org.eclipse.birt.chart.output.ArcRenderEvent)
	 */
	public void drawArc( ArcRenderEvent are ) throws ChartException
	{
		if ( iv != null )
		{
			iv.modifyEvent( are );
		}