Re: strange reproducibility problem with QImage

2024-11-04 Thread Zbigniew Jędrzejewski-Szmek
On Sun, Nov 03, 2024 at 11:02:16AM -0500, Ben Beasley wrote: > Kevin’s observation about floating-point rounding and runtime dispatch is an > excellent one in general. > > Those two CPU’s should, as far as I can tell, be dispatched to the same SIMD > implementations in this case. > > Skimming

Re: strange reproducibility problem with QImage

2024-11-03 Thread Ben Beasley
Kevin’s observation about floating-point rounding and runtime dispatch is an excellent one in general. Those two CPU’s should, as far as I can tell, be dispatched to the same SIMD implementations in this case. Skimming https://github.com/qt/qtbase/blob/v6.8.0/src/gui/painting/qimagescale_sse4.

Re: strange reproducibility problem with QImage

2024-11-03 Thread Zbigniew Jędrzejewski-Szmek
On Sun, Nov 03, 2024 at 04:08:38AM +0100, Kevin Kofler via devel wrote: > Zbigniew Jędrzejewski-Szmek wrote: > > With python3-pyqt6-6.8.0-0.1.fc42.x86_64, we get a difference in how the > > icons are rendered: > > > > calibre-7.20.0-1.fc42.x86_64 > > modified-S.5 > > /u

Re: strange reproducibility problem with QImage

2024-11-02 Thread Kevin Kofler via devel
Zbigniew Jędrzejewski-Szmek wrote: > With python3-pyqt6-6.8.0-0.1.fc42.x86_64, we get a difference in how the > icons are rendered: > > calibre-7.20.0-1.fc42.x86_64 > modified-S.5 > /usr/share/icons/hicolor/16x16/apps/calibre-gui.png > modified-S.5 >

strange reproducibility problem with QImage

2024-10-29 Thread Zbigniew Jędrzejewski-Szmek
Hi, Calibre builds are irreproducible, various png icons differ slightly between builds [1]. I know where the issue occurs, but I'm at a loss where the fix should be applied. We have Qt experts and enthusiasts in Fedora, so I thought I'd post here… Icons are rendered [2] using the following code: