Font rendering broken when linked to HarfBuzz > 4.3.0?
a-hurst opened this issue · 6 comments
Just caught this problem testing out PySDL2 with the latest SDL2_ttf installed with homebrew, which recently updated its HarfBuzz from 4.3.0 to 4.4.1. For whatever reason, a change between these two versions breaks how TTF calculates character widths with HarfBuzz enabled such that updating a font's size with TTF_SetFontSize increasing the character size while only minimally affecting character spacing, so characters get squished together. When I manually uninstalled brew's harfbuzz 4.4.1 and reinstalled 4.3.0, the problem was immediately fixed. You can see the difference immediately with the PySDL2 ttf.py demo:
All the below images are using SDL_ttf 2.20.0 installed from Homebrew on macOS 12:
Font opened at 20pt (HarfBuzz 4.3.0):
Font resized to 30pt with TTF_SetFontSize (HarfBuzz 4.3.0):
Font opened at 20pt (HarfBuzz 4.4.1):
Font resized to 30pt with TTF_SetFontSize (HarfBuzz 4.4.1):
I don't have enough C knowledge to really help track down the cause, but I figured I should let you know before more distros and package managers update their HarfBuzz versions!
Can you please report this upstream to HarfBuzz?
Thanks!
I'm looking into this. Can you share the sample app?
I'm looking into this. Can you share the sample app?
Nevermind. I can reproduce this now.
Mainstream seems to have fixed this by harfbuzz/harfbuzz@cb5ca6b
Close this?