@SGaist Yes I'll have another look at it. But when I was using 5.6 some of the OpenGL shader demos would not run under windows without a hand build Qt with the -opengl desktop option.

I have built 5.7 from the same git branch under linux with no drama. I'll try and do another build on a clean windows machine (my build environment may not be in the best shape).

Thanks.

Hi,

AFAIK and as silly as it may sound: because it's an iOS platform feature/constaint.

It started with the Retina displays. iOS applications would have to provide these images if they wanted to support these displays.

You can find more information about scalability here.

Hope it helps