[OpenLayers-Users] OpenLayers 2.12 and IE10 messed up tiles

[Jelmer Baas]

Hi all,

I would like to come back to this issue again because I'm not sure how to proceed. It seems this issue won't be fixed in OL2.12, but OL2.13 isn't usable, yet. Unfortunately, I'm getting more and more reports from users who upgraded to IE10 and now can't use my application without a nasty hack (i.e., enabling script debugging).

The reason for not going to OL2.13 are performance-related. Sure, it performs beautifully on a desktop or on a tablet with all tiles already loaded, but:
- Rolling the mousewheel zooms animated to the next zoomstep, but waits there until the animation is completely finished. This makes quickly zooming in and out difficult and much slower than before
- When zooming in, the images of the last COMPLETELY loaded zoom level are used. This means that with a slow loading layer zooming in looks very ugly.
- Most importantly: panning around on an iPad2 is painfully slow. As soon as new tiles are loaded, the interface simply hangs for a moment. If you continue moving around while the interface seems frozen, it takes even longer (a full second, sometimes). 
This is noticable in the full-screen example with one layer, where the "without buffer" option performs much better but still not perfect. In my tests, having more than one layer active seems to make matters much worse.

I have tried using a tileManager to solve the performance issues, but that didn't appear to have any effect. Setting zoomMethod to null also didn't fix the stuttering issues.

Regards,
Jelmer Baas


-----Original Message-----
From: Andreas Hocevar [mailto:ahocevar at opengeo.org] 
Sent: Monday, April 08, 2013 10:45
To: Jelmer Baas
Subject: Re: [OpenLayers-Users] OpenLayers 2.12 and IE10 messed up tiles

Most of the tile loading / positioning was rewritten, so your best
option is to use 2.13 anyway.

Andreas.

On Mon, Apr 8, 2013 at 10:23 AM, Jelmer Baas <baas at speerit.nl> wrote:
> That's the whole problem: I have no idea where or whan it was actually fixed, I just know it's broken in 2.12, and works OK in 2.13.
>
> Regards,
> Jelmer
>
> -----Original Message-----
> From: Andreas Hocevar [mailto:ahocevar at opengeo.org]
> Sent: Monday, April 08, 2013 09:16
> To: Jelmer Baas
> Cc: openlayers-users at lists.osgeo.org
> Subject: Re: [OpenLayers-Users] OpenLayers 2.12 and IE10 messed up tiles
>
> If you want a backport, usually you can take a particular pull request
> and apply it to your version. Will not always work though. In this
> case I wonder which fix you are talking about, because the ticket you
> referenced in the original post never got a pull request attached and
> is also still open.
>
> Andreas.
>
> On Mon, Apr 8, 2013 at 8:51 AM, Jelmer Baas <baas at speerit.nl> wrote:
>> Thanks, I'll taak a look and see how far I get.
>>
>> That said: I do believe it would be useful to backport this change to the 2.12 version, right?
>>
>> Regards,
>> Jelmer
>>
>>
>> -----Original Message-----
>> From: andreas.hocevar at gmail.com [mailto:andreas.hocevar at gmail.com] On Behalf Of Andreas Hocevar
>> Sent: Saturday, April 06, 2013 21:36
>> To: Jelmer Baas
>> Subject: Re: [OpenLayers-Users] OpenLayers 2.12 and IE10 messed up tiles
>>
>> Have you read the 2.13 release notes? There may be some things you
>> have to change in your code:
>> https://github.com/openlayers/openlayers/blob/master/notes/2.13.md.
>>
>> Andreas.
>>
>> On Sat, Apr 6, 2013 at 1:05 PM, Jelmer Baas <baas at speerit.nl> wrote:
>>> Hi all,
>>>
>>> Has anyone seen this GitHub report? https://github.com/openlayers/openlayers/issues/686
>>>
>>> It seems it has been fixed in OL 2.13, but since that's not released yet I'm hesitant to upgrade to it (I tried and nearly everything broke in my application). Is there any chance of fixing this issue in OL 2.12?
>>>
>>> Regards,
>>> Jelmer Baas
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>
>>
>>
>> --
>> Andreas Hocevar
>> OpenGeo - http://opengeo.org/
>> Expert service straight from the developers.
>
>
>
> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.



-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.