[OpenLayers-Dev] PNG - AGG image, opacity and IE7

[Kenneth Skovhede, GEOGRAF A/S]

I have seen this as well. It happens whenever you set the "alpha" value 
in IE7.
It even happens if the value is set to 1.0, but a fix in OpenLayers 2.6 
removes
the "alpha" value if the opacity value is greater than 1.0.
(OpenLayers.Util.modifyDOMElement line 191).

I'm fairly sure its an IE bug.

Regards, Kenneth Skovhede, GEOGRAF A/S



Guillaume Sueur skrev:
> no, mapserver, but it's a typical client problem.
> when the polygon is filled, it looks quite ok, because only the outline 
> border is wrong, but with lines and labels, whaouh, so crap !
> when opacity is 1 or format is standard PNG, the problem doesn't show up.
>
> Guillaume
>
> Zac Spitzer a écrit :
>   
>> was this using mapguide? I have seen similiar problems
>>
>> On Fri, Jul 18, 2008 at 12:11 AM, Guillaume Sueur
>> <guillaume.sueur at neogeo-online.net> wrote:
>>     
>>> Hi devs,
>>>
>>> When displaying a WMS layer (AGG image) with some transparency on IE7,
>>> it shows ugly grey pixels surrounding the borders. I guess it comes from
>>> a mishandling of the antialiased pixels from AGG. Any trick to hold that ?
>>>
>>> Thanks
>>>
>>> Guillaume
>>>
>>> _______________________________________________
>>> Dev mailing list
>>> Dev at openlayers.org
>>> http://openlayers.org/mailman/listinfo/dev
>>>
>>>       
>>
>>     
>
> _______________________________________________
> Dev mailing list
> Dev at openlayers.org
> http://openlayers.org/mailman/listinfo/dev
>   
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/openlayers-dev/attachments/20080718/50d36fc3/attachment.html