Priority: P2: Important
Affects Version/s: 6.2.0 RC
Fix Version/s: None
Component/s: GUI: Graphics Performance
Environment:Linux X11 Manjaro on Intel HD
Linux eglfs Debian Buster on Raspberry Pi 3B
Hello, I'm starting to evaluate Qt6 for my projects. I ran a couple of tests to compare Qt5 to Qt6 and noticed something weird in my first test.
My benchmark is a simple Qt Quick application with a few animations and a framerate value shown in the interface.
What I see is that my calculation of the framerate reports a higher value of Qt5 vs Qt6 for the two platforms I tested: x64 Intel HD Linux on X11 and armv8-a Raspberry Pi 3B Linux on eglfs KMS.
Intel HD: ~40 vs ~31
VC4 Raspberry Pi: ~60 vs ~41
Are these values to be trusted? What do you consider to be the cause?
- The benchmark app can be found here: https://github.com/carlonluca/Fall
- This is how framerate is computed: https://github.com/carlonluca/lqtutils/blob/master/lqtutils_ui.cpp
- This is a video showing what I see: https://youtu.be/5fPRT4j_VJE