[OpenLayers-Users] OpenLayers 2.12 and IE10 messed up tiles
Andreas Hocevar
ahocevar at opengeo.org
Mon Apr 29 05:22:16 PDT 2013
Your test report is a bit confusing, but from your description I can
tell that the difference between 2.12 and 2.13 that causes you
headache is that we don't throttle tile loading by only sending one
request per animation frame any more. What makes your browsers stutter
is that setting the src of an image is expensive (browser cache
lookups etc.).
When upgrading from 2.12 to 2.13, one thing you will want to do when
with any of your apps that target mobile devices is to configure the
map with a TileManager. I just created a pull request that brings back
throttling to the TileManager:
https://github.com/openlayers/openlayers/pull/962.
Let us know if you see any improvements with this.
Thanks,
Andreas.
On Mon, Apr 29, 2013 at 12:42 PM, Jelmer Baas <baas at speerit.nl> wrote:
> Andreas,
>
> I've done some more testing.
> - Removed all elements that are laid out over the map
> - Removed event hooks
> - Added tileManager: new OpenLayers.TileManager({moveDelay: 250, zoomDelay: 200})
> - Added the GPU-disable stuff via the CSS provided on the releasenotes page.
> - set the OSM layer buffer to 0
> - Downloaded the latest OL2.13 from GitHub
>
> Test case:
> - Running on an Intel i7 @3.5ghz with a Radeon 7970, so it's not hardware limited.
> - Full screen browser window with an OL div filling nearly the entire window on a 2560x1440px display
> - OSM and custom OSM-ish layer, no other features.
>
> What I noticed:
> Firefox:
> - Zooming in-and-out feels choppy, even compared to the live version of our software (with its overlays and OL2.12)
> - Even with the "disable GPU" css removed, it's more choppy.
> - Disabling the tilemanager seems to make it worse (shorter but more heavy stutter)
> - Removing zoomMethod: null actually makes zooming more pleasant. Probably because the animation makes it easy to wait a bit
> - The stuttering seems to mostly occur when OL needs fresh tiles. Tiles that have been cached show up much better (still a tiny bit choppy)
> Chrome:
> - Zooming feels more-or-less the same.
> - Removing the disable GPU css doesn't change much (???)
> - Enabling zoom animation makes the zoom transitions MUCH better.
> - With or with GPU accelearation, loading new tiles still feels choppy.
> - Disabling the tilemanager makes the entire thing load insanely fast! (but still choppy)
> - No tilemanager and no GPU help is dramatic for zooming.
> iPad 2 with iOS 6.0.1
> - With everything disabled actually feels slightly better than OL 2.12. Except when panning WHILE loading a new tile from the server, then it becomes choppy.
> - Enabling animated zoom makes zooming more pleasant
> - Without the GPU disable CSS, it's dramatic and tile loading makes it infinitely more choppy.
> - Setting my OSM layer to a buffer of 2 tiles, it's MUCH better. Unless you get near the edges, then the choppyness starts.
> BONUS: IE10:
> - Zooming is rather slow, but loading new tiles does NOT cause choppyness.
> - Disabling tilemanager works flawlessly and FAST
> - Zoom animations work good
> - Removing the GPU disable CSS makes zooming more smooth, but panning more choppy.
>
> There are two conclusions that I can draw from this:
> 1. There's some nasty stuff going on when loading new tiles from the server (in this case: multiple servers, 4 of 'em) compared to 2.12.
> 2. OL2.13 works best with IE10. ;)
>
> To those without an iPad, I've recorded a short movie with my phone. I apologize for not keeping the camera straight and steady, it's rather hard to film and zoom/pan...
> http://www.youtube.com/watch?v=bGL4_GsfbwY
>
> This is the OL 2.13 example page. So even in the original examples it's not working properly. The same example works much, much quicker when ran via
> http://dev.openlayers.org/releases/OpenLayers-2.12/examples/fullScreen.html
>
> I hope this is of any use to anyone.
>
> Regards,
> Jelmer
>
> -----Original Message-----
> From: andreas.hocevar at gmail.com [mailto:andreas.hocevar at gmail.com] On Behalf Of Andreas Hocevar
> Sent: Monday, April 29, 2013 11:02
> To: Jelmer Baas
> Cc: openlayers-users at lists.osgeo.org
> Subject: Re: [OpenLayers-Users] OpenLayers 2.12 and IE10 messed up tiles
>
> Take a look at the release notes
> (https://github.com/openlayers/openlayers/blob/master/notes/2.13.md).
> In addition to setting zoomMethod to null and using a tileManager, you
> may want to disable GPU support by adjusting your css. With these
> three changes, your map should behave like in 2.12.
>
> Your description also sounds like you may not have configured the
> TileManager properly. The release notes also explain how to do that.
> You may also have to tweak the zoomDelay and moveDelay of the
> TileManager.
>
> Let us know how it goes.
>
> Andreas.
>
> On Mon, Apr 29, 2013 at 10:16 AM, Jelmer Baas <baas at speerit.nl> wrote:
>> 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.
>> _______________________________________________
>> 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.
> _______________________________________________
> 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.
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