[mapguide-trac] #743: Support transparency with GETDYNAMICMAPOVERLAYIMAGE in PNG8 format

[MapGuide Open Source]

#743: Support transparency with GETDYNAMICMAPOVERLAYIMAGE in PNG8 format
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 Reporter:  gingerbbm          |         Owner:     
     Type:  enhancement        |        Status:  new
 Priority:  medium             |     Milestone:     
Component:  Rendering Service  |       Version:     
 Severity:  minor              |    Resolution:     
 Keywords:                     |   External_id:     
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Comment (by lgnemmi):

 I have just tested with MG 2.1 and i have the same result. Current png8
 format allows only full opacity or full transparency (binary). It does not
 support semi-transparency (alpha).  It would be a great enhancement.

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Ticket URL: <http://trac.osgeo.org/mapguide/ticket/743#comment:6>
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