[webkit-dev] FYI: sub-pixel layout landing soon

[Maciej Stachowiak]

If it's a global switch that ports can't opt out of, then we have to do this at a time when it wouldn't disrupt anyone's release cycle. Let's say hypothetically a vendor was going to branch from trunk and ship in two weeks (not actually the case for us, but just to make it an extreme example). It would be insane for them to take this change. So we need one of the following:

(1) It needs to be compile-time switchable so that vendors who are close to shipping can turn it on to mitigate risk without having to roll back to earlier on trunk.
    OR
(2) We need up-front buy-in from all vendors who ship from the open source tree that now is a reasonable time for them to make such a major change.

Regards,
Maciej


On Apr 23, 2012, at 2:48 PM, Levi Weintraub wrote:

> Supporting this would be very logistically intensive and error prone. Beyond huge test expectation differences, hacking on the rendering engine could easily result in bugs in one path or the other.
> 
> -Levi
> 
> On Mon, Apr 23, 2012 at 2:31 PM, Adele Peterson <adele at apple.com> wrote:
> Is there an if-def ports can use if they don't want this on by default?
> 
> - Adele
> 
> On Apr 23, 2012, at 2:15 PM, Levi Weintraub wrote:
> 
>> WebKittens and Unlucky Sheriffs
>> 
>> We intend to flip the switch on sub-pixel layout tomorrow morning PST. We apologize in advance for any breakages. See https://trac.webkit.org/wiki/LayoutUnit and http://webkit.org/b/60318 for reference, and feel free to contact Emil (eae) or me (leviw) with any questions.
>> 
>> Happy zooming!
>> 
>> -Emil and Levi
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> 
> 
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