If you are *so* resouce constrained, use LVGL. You're probably not using 15MB Qt llibraries anyway, and they would take too long load anyway.
Sent: Thursday, April 22, 2021 at 1:35 PM
From: "Roland Hughes" <rol...@logikalsolutions.com>
To: eric.fedosej...@gmail.com, "'Vlad Stelmahovsky'" <vladstelmahov...@gmail.com>
Cc: "'interest'" <interest@qt-project.org>
Subject: Re: [Interest] Guide me through the Qt offerings for GUIs
From: "Roland Hughes" <rol...@logikalsolutions.com>
To: eric.fedosej...@gmail.com, "'Vlad Stelmahovsky'" <vladstelmahov...@gmail.com>
Cc: "'interest'" <interest@qt-project.org>
Subject: Re: [Interest] Guide me through the Qt offerings for GUIs
On 4/22/21 8:15 AM, eric.fedosej...@gmail.com wrote:
From: Interest <interest-boun...@qt-project.org> On Behalf Of Volker Hilsheimer Sent: Thursday, April 22, 2021 8:24 AM We currently have no specific plans to make QWidget render through RHI, and neither the video nor my earlier emails suggest that this is on the roadmap. It generally makes very little sense to draw with a pen into a freshly wiped out Vulkan surface > 60 times per second.Why are QWidgets not rendering almost everything directly from texture? Except when styles are changed, there should almost never be a need to blit a widget. There is nothing intrinsic about widgets (vs. quick controls) that requires them to be blitted onto a freshly wiped surface 60 times per second, only inertia and a lack of desire to make any improvements to the widget backend in over a decade.
Just a point of interest.
That work of art UI I posted a link to earlier had no GPU. This is common in the embedded world when people are pushing for days (not minutes) of battery life. We pre-loaded all our images, did our own caching, and blitted everything.
When this conversation talks about QML performance in the embedded world it is talking about that subset of the embedded world which splurges for GPU.
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