[Interest] Qt Quick Controls 1 deprecated but no native styles for Qt Quick Controls 2?

Dimitar Dobrev dpldobrev at protonmail.com
Mon Dec 10 18:02:42 CET 2018

Video cards which don't support OpenGL are without a doubt a small minority. Even if we assume it's a significant minority, have you actually measured the performance of Qt Widgets versus Qt Quick with no hardware support? In other words, Qt Widgets is, as far as I know, always rendered in software, so how would it be faster than Qt Quick rendered in software?

The argument for performance and easiness has been made more than a year ago by the Qt team itself, as I've pointed out earlier in this thread. I haven't said even once that it's easy. I've only been saying it's necessary.

On 10.12.18 18:52, Dmitriy Purgin wrote:

> Don't forget that in order to use QCC2 you will need a graphic card with OpenGL support or rely on the rather slow software implementation (was it GPL only btw?). Qt Widgets don't need a 3D accelerator. There are still use cases where you don't have an OpenGL-enabled environment. Making QCC2 looking native on Desktop in order to make Desktop applications would -in my opinion- just mean that you waste computing power on rendering controls that can be rendered easier, with less dependencies and without need to provide QML-to-C++ bridges.
> Cheers
> Dmitriy
> On Mon, Dec 10, 2018 at 4:35 PM Dimitar Dobrev via Interest <interest at lists.qt-project.org> wrote:
>> On 10.12.18 16:43, Vlad Stelmahovsky wrote:
>>> My point is that QtWidgets limited with desktop apps only
>> An excellent point, Vlad, thank you for reminding me. Yes, this is
>> exactly right - the lack of native styles in Qt Quick Controls 2 would
>> ruin mobile development with Qt as well. Most mobile applications need
>> to look native, in fact, the only major exception are games.
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