@gunnarhj What @mgiammarco is trying to explain is that the RGB subpixel rendering is also broken. RGB subpixel rendering is a way to make aliased fonts look even smoother by making use of the physical layout of the panel pixels. By colouring the aliased pixel, they can be positioned closer to the stem of the character (at the pixel level) instead of being an average grey level. So, the blow-ups of RGB subpixel rendered fonts show a regression in the RGB subpixel rendering.
There is only an extra setting to choose the order of the RGB subpixels, but a blow-up of RGB subpixel rendered fonts should always result in coloured aliasing pixels. They are clearly misssing in @mgiammarco and my screenshots (which was taking from Open Sans as a random example). @mgiammarco I know my screenshot was not correct, I was giving you the requested screenshot to confirm the additional regression. I still feel this is a regression in libfreetype or something near libfreetype? Although RGB subpixel rendering problem could be caused by not honouring the setting, since normal aliasing would look grey-scale like in the screenshots. That would point to fontconfig or fontconfig- config. -- You received this bug notification because you are a member of Documentation Packages, which is subscribed to fonts-ubuntu in Ubuntu. https://bugs.launchpad.net/bugs/2017573 Title: Font hinting broken on 23.04 Status in fonts-ubuntu package in Ubuntu: Confirmed Bug description: Just upgraded my laptops to Kubuntu 23.04 Lunar Lobster and hinting for all non-commercial fonts seems broken. I used to have decent if not perfect hinting on Ubuntu and Ubuntu Mono font, but now the only fonts that still hint correctly are Microsoft's Verdana and Tahoma etc. Not sure whether the devide is exactly along this line, but it stands out. Tried regenerating font cache (fc-cache -rv) but that didn't help. Operating System: Kubuntu 23.04 KDE Plasma Version: 5.27.4 KDE Frameworks Version: 5.104.0 Qt Version: 5.15.8 Kernel Version: 6.3.0 (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i7-10510U CPU @ 1.80GHz Memory: 31.1 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics Manufacturer: Notebook Product Name: N141CU System Version: Not Applicable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fonts-ubuntu/+bug/2017573/+subscriptions -- Mailing list: https://launchpad.net/~documentation-packages Post to : documentation-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~documentation-packages More help : https://help.launchpad.net/ListHelp
