Backport proposal of the Marlin renderer in OpenJDK8

[Gil Tene]

As our all of our Zulu 8 builds already integrate Marlin as our default renderer, test it with every build, and support a multitude of both free and commercial customers using it, we (Azul) are wholeheartedly supportive of including Marlin in 8u. We will actively participate in back-porting fixes,  solving problems that may happen in production systems in 8u, and (obviously) upstreaming any fixes we end up doing to Marlin code in Zulu 8.

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> On Aug 7, 2019, at 2:33 AM, Laurent Bourgès <bourges.laurent at gmail.com> wrote:
> 
> Dear Mario,
> 
>> Le mer. 7 août 2019 à 10:40, Mario Torre <neugens at redhat.com> a écrit :
>> 
>> Hi Laurent,
>> 
>> I would be supportive with this if we had help backporting fixes and
>> solving problems that may happen in production systems in 8u.
>> 
> 
> As you probably know, I am the single maintainer of the Marlin renderer,
> all that FOSS work is done on my spare time with very low funding (gofundme
> campaign only).
> 
> I can do the backporting work concerning the Marlin renderer as I do its
> main development on OpenJDK8 already.
> 
> Anyway if any bug in the renderer is found, I already do the
> synchronization to fix all active branches:
> - my github: jdk8, jdk, jfx (8 branches)
> - jdk (14), jfx-dev (14)
> -  jdk11u
> ...
> - jetbrains jdk8u_jdk PR on github
> 
> I could maintain 1 more openjdk8 branch but like you, I would appreciate
> any help on backporting & testing.
> 
> Cheers,
> Laurent
> 
> 
>> On Wed, Aug 7, 2019 at 10:05 AM Laurent Bourgès
>> <bourges.laurent at gmail.com> wrote:
>>> 
>>> Hi,
>>> 
>>> I want to discuss the opportunity to provide the Marlin renderer in
>> OpenJDK8 updates.
>>> 
>>> FYI it is the java2d antialiasing renderer that replaced Pisces in
>> OpenJDK9 (integrated in 2015) that provide both better quality and
>> performance.
>>> I am still maintaining the code on github, openjdk and openjfx.
>>> FYI the Marlin renderer has a very efficient path clipper since v0.9
>> integrated in OpenJDK11 (2018.7).
>>> Very few bugs (<5) were reported since 2015.
>>> 
>>> Risks: azul zulu 8 and jetbrains jdk8 provide the Marlin renderer as
>> their default renderer and it runs in production for years.
>>> I am aware that amazon corretto would like to have it backported too.
>>> AdoptOpenJDK already mentioned such possible backport on their web pages.
>>> 
>>> Finally I propose to
>>> - make a large patch (same marlin version as latest openjdk 14 ie
>> 0.9.1.1) to easily backport fixes in the future
>>> - leave it disabled by default. It will depend on the provider to enable
>> it in its binary releases.
>>> 
>>> Cheers,
>>> Laurent
>> 
>> 
>> 
>> --
>> Mario Torre
>> Associate Manager, Software Engineering
>> Red Hat GmbH <https://www.redhat.com>
>> 9704 A60C B4BE A8B8 0F30  9205 5D7E 4952 3F65 7898
>>