Hi,
I have some troubles using AGG with cascaded WMS.
I have my first mapfile that exposes WMS layers (MapServer is used as a
WMS server and a WMS client ) : refs.map
I have a second mapfile that contains a Postgis layer (this mapfile uses
only MapServer as WMS server) : roads.map
I'm using MapServer 5.6.3 with patch r9635 on Debian (to advertise my
desired "GetMap formats" in the WMS/Capabilities) .
I can get nice PNG with AGG when I request directly my second mapfile
routier.map (using mapserver only as WMS server).
But if I request my first mapfile (that then requests my second mapfile
using MapServer as WMS client), I get PNG with bad aliasing (AGG does
not seem to be used!).
I looked at the mapserv.log (for the WMS/GetMap that requests the
cascaded WMS) and I saw : "msDrawGDAL(): red,green,blue,alpha bands =
1,2,3,4"
Does "msDrawGDAL" meen that DGAL driver is used instead of AGG driver ?
Thanks for your reply.
Laurent
NB : Sorry for my poor English...
An excerpt from my first mapfile (refs.map):
"MAP
...
OUTPUTFORMAT
NAME "PNG"
DRIVER "AGG/PNG"
MIMETYPE "image/png"
IMAGEMODE RGBA
TRANSPARENT ON
END
...
WEB
...
METADATA
...
"wms_getmap_formatlist" "image/png,image/jpg,image/jpeg"
END
END
LAYER
NAME "my_layer"
...
CONNECTIONTYPE WMS
"http://my_domain/cgi-bin/mapserv?map=/my_path/roads.map";
METADATA
WMS_NAME "my_roads"
"wms_server_version" "1.1.1"
"wms_format" "image/png"
...
END
END
...
END"
An excerpt from my second mapfile (roads.map) :
MAP
...
OUTPUTFORMAT
NAME "PNG"
DRIVER "AGG/PNG"
MIMETYPE "image/png"
IMAGEMODE RGBA
TRANSPARENT ON
END
...
WEB
...
METADATA
...
"wms_getmap_formatlist" "image/png"
END
END
LAYER
NAME "my_roads"
...
CONNECTIONTYPE postgis
...
END
...
END
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