[OpenLayers-Users] IE panning problem

lukast lukast at poczta.fm
Mon Jul 21 15:00:46 EDT 2008


Thanks for your remarks. I do not think it's because of alpha. I have only
one WMS layer, alpha option is not turned on. This behaviour occurs while IE
loads additional tiles when panning. Panning stops then until images are
loaded. After that panning works smoothly until next several images are
being loaded...

 

Christopher Schmidt-4 wrote:
> 
> On Mon, Jul 21, 2008 at 03:30:52PM +0200, Patrick Valsecchi wrote:
>> On Monday 21 July 2008 14.36:36 Christopher Schmidt wrote:
>> > IE is slower,
>> > but not quite as slow as this
>> > But a link might help.
>> 
>> Hi,
>> 
>> I'd say it's slower than a normal user can cope, especially when zooming.
>> 
>> I have an OL (current SVN version) web site with a WMS base layer (tiled)
>> and 
>> a WMS alpha=true layer (not tiled). 
> 
> Yes. The alpha: true doesn't work. You shouldn't use it. If you are
> using it, you will get this behavior. OL can't do anything about it.
> 
> I've explained this problem to several dozen people over the past two
> years, and everyone has told me "It should work!" But it doesn't. Alpha
> PNG support was left out of IE6 for performance reasons: Turning it on
> doesn't fix the performance problems, and doesn't work for solving this.
> 
> The haiku you quoted was simply stating that if you turn off alpha hack
> support, you'll still have something much slower than Firefox -- but
> nothing like what you get if you have alpha: true.
> 
> Regards,
> -- 
> Christopher Schmidt
> MetaCarta
> _______________________________________________
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> Users at openlayers.org
> http://openlayers.org/mailman/listinfo/users
> 
> 

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