Max Chernoff via ntg-context <ntg-context@ntg.nl> writes: > Hi Leah, > > >> > Leah and I are zooming in on the issue. It might relate to wrong font >> > matrix default behavior in the pdf printer driver, and GS got a fix >> > for that long ago, so maybe old printers with not-updated drivers can >> > be affected. >> > >> > Once we're confident that we can catch it Leah (who does the low level >> > introspective testing with viewers, printers and tools) likely will >> > report on it and there will be a test file for users to test if what >> > we do is okay before we apply the safeguard. >> >> There's a write up now on the issue: >> https://leahneukirchen.org/blog/archive/2022/10/50-blank-pages-or-black-box-debugging-of-pdf-rendering-in-printers.html > > Great write up! I was expecting the issue to be something quite simple, > but it's actually fairly complicated. Especially considering that the > issue only happens with a few printer models, I'm pretty impressed that > you managed to find the problem. At least the fix appears quite easy. > > Seeing that you're modifying the font encoding, could you perhaps > reconsider supporting hinting in LMTX? > > https://mailman.ntg.nl/pipermail/ntg-context/2022/106311.html > > Even with a high resolution screen, I can still see a difference, and > the issue can show up in print too: > > > https://graphicdesign.stackexchange.com/q/5874 > > I'm fairly confident that these issues are all hinting-related: > > https://mailman.ntg.nl/pipermail/ntg-context/2022/106874.html > https://mailman.ntg.nl/pipermail/ntg-context/2022/105212.html > > Considering that all of the fonts included with ConTeXt are hinted, it > seems like a shame to not include any of that data in the generated > PDFs.
The last version of font-cff.lua should also copy the hinting-related values of the CFF properly (/BlueScale, /StemSnap[HV] etc). We fixed that on the side. ;) -- Leah Neukirchen <l...@vuxu.org> https://leahneukirchen.org ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________
