lcms and pisces quality [was: Re: Heads Up: JDK 7 Linux platforms moving to Fedora 9]

[Dmitri Trembovetski]

   Other pisces issues mentioned by Jim in
     http://bugs.sun.com/view_bug.do?bug_id=6610080

- Performance is not as good as the Ductus library
- Fixed point is used with little or no overflow protection
- No support for the STROKE_CONTROL hint

   Thanks,
     Dmitri


Andrew John Hughes wrote:
> 2008/12/22 Dmitri Trembovetski <Dmitri.Trembovetski at sun.com>:
>>  Hi Mark,
>>
>> Mark Wielaard wrote:
>>> Hi Dmitri,
>>>
>>> On Fri, 2008-12-19 at 17:00 -0800, Dmitri Trembovetski wrote:
>>>> Mark Wielaard wrote:
>>>>> On Fri, 2008-12-19 at 14:21 -0800, Kelly O'Hair wrote:
>>>>>> The JDK7 early access binary snapshot builds are built from the
>>>>>> OpenJDK7 sources, plus additional files and repositories we either
>>>>>> cannot or haven't opened up yet (for various reasons).
>>>>> Do you have a list of these additional files and repositories? Is there
>>>>> anything for which there still isn't a free replacement available?
>>>>   For some of these free replacements are available in the openjdk
>>>>   tree, but they aren't yet of satisfactory quality (like the
>>>>   antialiasing rasterizer)
>>> Do you have a list of quality improvements (or maybe test cases) that
>>> are needed for these components? Do you know if someone is already
>>> working on those improvements?
>>  The engineers who integrated lcms and pisces rendering library
>>  may pitch in (they're cc-ed), I know of a few bugs for lcms:
>>    http://bugs.sun.com/view_bug.do?bug_id=6523398
>>    http://bugs.sun.com/view_bug.do?bug_id=6523402
>>
>>  I believe there are some performance issues as well but I couldn't
>>  find the bug ids.
>>
>>  Also, I know that pisces has some quality issues especially
>>  with large coordinate handling. Performance as well but I couldn't
>>  find any filed bugs.
>>
>>  Thanks,
>>    Dmitri
>>
> 
> 6523398 is fixed by Keith Seitz's patch in IcedTea (see the discussion
> on this recently on distro-pkg-dev; we need a more widespread fix so
> that the system lcms can be used).  I think 6523402 has also been
> discussed in the past on the java2d mailing list.