I noticed the high-dpi problem on a high-end MacBook Pro Retina. Took me by 
surprise for JavaOne demos since I usually use an external monitor 
(non-retina). I ended up switching to low dpi.


On Jan 3, 2014, at 3:59 PM, Stephen F Northover <steve.x.northo...@oracle.com> 

> Hi Tobias,
> Sorry about that.
> Looking at the bug, it seems to me that we have gotten to the bottom of it.  
> Some iOS devices are scrolling fine while others are slower.  The difference 
> seems to be that high dpi disables optimizations and this causes the slowness 
> on iOS.  The same optimizations are disabled on the desktop, but the desktop 
> is much faster and people don't notice.  There was some discussion about 
> performance in the simulator, but we should ignore that. Performance on the 
> device is what matters.
> iOS and Android are not currently supported platforms for JavaFX. We are 
> looking towards the community to step up and submit patches to take these 
> ports forward.  Johan Vos and others are helping with Android.  Are you 
> interested in working on iOS?  If so, please build on the patches in 
> https://javafx-jira.kenai.com/browse/RT-31453 and take the work forward.
> The first step would be to prove that we can be fast (which I think we can if 
> we run with the optimizations) then understand how to turn the optimizations 
> back on.
> Steve
> On 2014-01-03 3:28 PM, Tobias Bley wrote:
>> Hi,
>> many months ago I reported the „poor performance on iOS“ issue 
>> (https://javafx-jira.kenai.com/browse/RT-31453). Now 6 months later the bug 
>> is already open and no one of Oracle answers me on Jira.
>> What’s up? How can we fix this important bug?
>> Best,
>> Tobi

Reply via email to