系统平台，在ubuntu上面
(1)aptitude install mapserver  libagg-dev

(2)在map文件里面添加输出AGG支持

OUTPUTFORMAT

NAME'AGG'

DRIVERAGG/PNG

IMAGEMODERGB

END

(3)在OpenLayers里面使用AGG
           
        var layer_obj = new OpenLayers.Layer.WMS(
                "beijing",
                serverURL,
                {  
                    layers: 'rbeijing',
                    map: '/wwwroot/shp/bj.map',
                    format: 'AGG'
                },
                {
                    reproject: false,
                    numZoomLevels: 20,
                    gutter: 15,
                    buffer: 0
                }
            );

前后的效果比较
没有使用AGG支持的效果


使用AGG支持的效果






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