It's working well for us via WMS, but I did notice that if your format request had additional specifics besides "image/png" it would return an error. We only have one png output type defined in our mapfile as well, so that could be confusing things.
John Brent Fraser wrote: > > Christopher, > > Sorry for the terse question, here are some more > details... > > I'm using the AGG/PNG output driver (see RFC-32) in > Mapserver 5.0 beta 4 to render shapefile vectors (no raster > input) to a PNG graphic file. When I use Mapserver's CGI > interface to request a graphic map, the lines appear > anti-aliased (smooth, no jaggies) Great! But when I use > Mapserver's WMS interface, I get the same old rendering > Mapserver always gave (lines with jaggies). > > Note there was an email > (http://lists.umn.edu/cgi-bin/wa?A2=ind0703&L=mapserver-dev&; > T=0&O=D&X=639F0B08FDD720FAC9&P=6714) saying "WSM right now > only advertise gd and gdal based drivers. See bug 455". > > > After some review of the images, it looks like my "DRIVER > AGG/PNG" produces a 24 bit png file via CGI, but an 8 bit > png file via WMS. When I try to do AGG/PNG24, I get > "General error message. OUTPUTFORMAT clause references > driver AGG/PNG24, but this driver isn't configured." from > Mapserver. I'll have to do some more digging... > > Brent Fraser > GeoAnalytic Inc. > Calgary, Alberta > > ----- Original Message ----- > From: "Christopher Schmidt" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Thursday, August 23, 2007 1:03 PM > Subject: Re: [UMN_MAPSERVER-USERS] AGG and WMS > > >> On Thu, Aug 23, 2007 at 12:32:41PM -0600, Brent Fraser > wrote: >> > Is AGG supposed to do anti-aliased output when Mapserver > is >> > used as a WMS server? >> >> I'm not sure what 'antialiased' output means -- perhaps > you mean 'alpha >> transparency', perhaps you mean antialiasing within the > images, perhaps >> you mean something else. Can you clarify? >> >> The answer to the first is, I believe, "no". WMS spec > only allows for >> 'transparency or no transparency', and MapServer does not > implement >> alpha transparency output in the WMS images. >> >> The answer to the second is "Sure" -- the images for >> http://boston.freemap.in/ are fetched from WMS (by > TileCache). >> >> Regards, >> -- >> Christopher Schmidt >> MetaCarta > > -- View this message in context: http://www.nabble.com/AGG-and-WMS-tf4319186.html#a12300990 Sent from the Mapserver - User mailing list archive at Nabble.com.
