Hi,
I have a really simple OL3 map, an OSM basemap with 3 WMS layers, based
on the WMS Tiled example page. Everything works fine in a browser, but
when I try this page on my mobile phone or on a tablet, the performance
drops drastically.
The animation of a simple pan is slow and seems irresponsive. I ran the
Chrome Timeline tool on it and all the time seems to be spent in drawImage.
drawImage
On a mobile (Nexus 6P) : 1288 ms (88% of the total time)
On a laptop: 5.6 ms (3% of the total time)
Test application:
http://jsfiddle.net/r186zucL/
Do anyone as an idea of why we would see such a big difference in the
performance of the canvas renderer on mobile?
Note that using only one layer at a time (instead of 4) makes everything
work alright. Also, when I test, I make sure to not pan to request new
tiles, so network should not be the issue.
Best regards,
Julien
--
Julien-Samuel Lacroix
T: +1 418-696-5056 #202
Mapgears
http://www.mapgears.com/
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