Oracle JDK vs. OpenJDK: font engine differences

Phil Race philip.race at
Tue Nov 14 16:58:01 UTC 2017

> This is also JavaFX, or am I misreading the bug report and target components?

Right. Any reference you find anywhere to current shipping Oracle binaries using freetype
are limited entirely to OpenJFX where it uses the platform rasteriser and that HAPPENS
to be freetype on Linux
It does not ship or include freetype .. it just picks it up from the desktop environment ..
no different than any other platform API JDK might use.

T2K is not used by default anywhere in OpenJFX today.

It was still there for embedded use on some platforms that did not include freetype by
default and for Windows Vista (!) which did not include the needed DirectWrite libraries.
Those are now both legacy / unsupported and so T2K is already removed from OpenJFX (not OpenJDK) in 10.


On 11/14/2017 04:56 AM, Mario Torre wrote:
> On Tue, 2017-11-14 at 10:42 +0100, dalibor topic wrote:
>> On 14.11.2017 10:16, Volker Simonis wrote:
>>> dalibor topic <dalibor.topic at
>>> <mailto:dalibor.topic at>> schrieb am Di. 14. Nov. 2017 um
>>> 09:44:
>>>      On 14.11.2017 02:55, Daniel Gredler wrote:
>>>       > I'd love to know more about
>>>       > the way forward here.
>>>      Please see
>>> /020929.html
>>> But that's about removinf T2K from JavaFX. The question was about
>>> the
>>> JDK. To my knowledge, the Oracle JDK 9 still contains and uses T2K
>>> for
>>> font rendering.
>> As the link above shows, in JDK 10, it's being removed from JavaFX,
>> eliminating one aspect of the differences between Oracle JDK and
>> OpenJDK
>> going forward.
> I don't think this really answer the question though, JavaFX is not
> part of OpenJDK 10. If anything this is another source of difference
> because the Oracle JDK bundles JavaFX while OpenJDK doesn't. Just
> adding the JavaFX binary to the GPL binary of OpenJDK doesn't really
> work either, it may be, perhaps and at best, a temporary solution, but
> we need to make sure that if the plan is to bundle JavaFX with OpenJDK,
> this is done in a way that anyone can reproduce the full build with
> standard tooling and no special hacks, at least on the officially
> supported platforms.
>> As shows, freetype
>> has
>> already been the default in Oracle JDK builds for embedded and
>> desktop
>> Linux & OS X for a couple of years.
> This is also JavaFX, or am I misreading the bug report and target
> components?
> Cheers,
> Mario

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