[Interest] QPixmap or QImage::scaled() crash on iOS with smoothTransformation

maitai maitai at virtual-winds.org
Sun Jul 19 22:53:53 CEST 2015


Only solution is to go back to 5.4.2 for iOS?

Le 19-07-2015 22:03, Allan Sandfeld Jensen a écrit :
> On Sunday 19 July 2015, maitai wrote:
>> Hello,
>> Using QT 5.5.0, I have a program that does some mass images rescaling
>> (let's say 60 images to rescale from 256x256 to 1370x1370, 
>> sequentially
>> in the same thread). This is running fine on windows, android, linux 
>> and
>> mac os. It crashes after some pictures in the loop on iOS. It does not
>> crash if I specify Qt::FastTransformation instead of
>> Qt::SmoothTransformation (non retina display). The crash occurs on all
>> iOS devices I tested.
>> It seems to me that it does not crash if the scaling is less important
>> (say from 256 to 300), but I need to do more testing to be sure.
>> Is there something useful to know about smoothTransformation and iOS
>> before I open a qt bug?
> Already opened: https://bugreports.qt.io/browse/QTBUG-47228
> The fix should be simple enough.
> `Allan

More information about the Interest mailing list