This is just to confirm that the result looks really great on my linux (Fedora 29 with i3) setup. Thanks!
chris On 2/10/19 7:47 PM, Makarius wrote: > On 08/02/2019 10:03, Christian Sternagel wrote: >> >> I am glad to hear that others have the same experience, I thought my >> eyes were going bad ;) >> >> But seriously, "buy a new screen" is not always possible. For example, >> in the upcoming summer term I am teaching an Isabelle class at the >> University of Innsbruck. In my experience (and I just reconfirmed this >> for the room I will be teaching in), the projectors we have here a >> typically rather old (and have low resolution, but that is a different >> story). >> >> At the moment there is a palpable difference (font rendering crispness >> wise) between using Isabelle2018 with projector (which I will do anyway >> for my class) and some recent development version (sorry I didn't note >> down what changeset I used for testing my setup). > > Classic JDK 8 from Oracle and OpenJDK 11 (e.g. from AdoptOpenJDK) are > different in many ways, and it is definitely required to get used to the > new look of font rendering. (For me Isabelle2018 already looks very > strange.) > > With proper parameters -- in software and hardware -- fonts should come > out better than before. > > > First of all, sub-pixel rendering should be enabled, see this NEWS entry > from Isabelle/f714114b0571 (25-Oct-2018): > > *** Isabelle/jEdit Prover IDE *** > > * Improved sub-pixel font rendering (especially on Linux), thanks to > OpenJDK 11. > > (In Java 8, sub-pixel rendering made things worse.) > > Since that that NEWS entry is a bit too implicit, I have now changed the > default to enable "Subpixel HRGB" always on all platforms > (Isabelle/f610115ca3d0). I have checked my usual test machines for > Windows and macOS, to see that it all looks fine. > > > Secondly, I have done some more research on FreeType, the renderer used > for OpenJDK on Linux. It appears that the DejaVu family gets some > special treatment if it shows up under its original name, but not if it > is a renamed copy. So I have fine-tuned the Isabelle DejaVu fonts in > Isabelle/4791988fcbc4 to impose the FreeType auto-hinting beforehand to > the TrueType file: this leads to isabelle_fonts-20190210 in > Isabelle/7e5a7a11d5d1. > > > In summary: > > * Isabelle font rendering should be once again slightly better on Linux. > > * There is a small risk that it has slightly degraded on Windows and > macOS. > > In other words: early adopters should look closely if it is all fine. We > are (very slowly) moving towards the Isabelle2019 release (presumably > June 2019), and everything needs to be beyond doubt when released. > > > Makarius > _______________________________________________ isabelle-dev mailing list isabelle-...@in.tum.de https://mailmanbroy.informatik.tu-muenchen.de/mailman/listinfo/isabelle-dev
