[webkit-dev] Subpixel Layout Update
abarth at webkit.org
Fri Feb 10 18:14:55 PST 2012
On Fri, Feb 10, 2012 at 6:09 PM, Levi Weintraub <leviw at google.com> wrote:
> On Fri, Feb 10, 2012 at 6:03 PM, Adam Barth <abarth at webkit.org> wrote:
>> On Fri, Feb 10, 2012 at 5:49 PM, Levi Weintraub <leviw at google.com> wrote:
>> > WebKittens,
>> > We're planning to wrap up our conversion of the RenderTree to subpixel
>> > units
>> > next week. We've created a the following wiki page to help explain the
>> > changes we are making: https://trac.webkit.org/wiki/LayoutUnit If you
>> > work
>> > on the rendering code, please take a look and talk to Emil and me if you
>> > have any questions.
>> > This will effect a large number of layout test expectations as well as
>> > some
>> > platform interfaces. If you are working on or maintaining a port other
>> > than
>> > Apple, Qt, and Chromium, please touch bases with us.
>> We've been talking about turning on mock scroll bars for Chromium.
>> Would it make sense to do that at the same time to minimize the number
>> of baseline updates?
> It would allow us to make only one WebKit sheriff's life miserable instead
> of two, but the changes don't really relate in any other meaningful way.
I meant it would let us update the PNGs once instead of twice.
>> > On Fri, Oct 28, 2011 at 1:43 PM, Levi Weintraub <leviw at chromium.org>
>> > wrote:
>> >> WebKittens,
>> >> As you may know, Emil and I have been diligently working on getting
>> >> subpixel layout up and running in WebKit. After much testing, we
>> >> settled on a fixed point implementation instead of floats; we're happy
>> >> to discuss how we arrived at this decision. We're currently in a state
>> >> where we pass most of the layout tests and many (but not all) of the
>> >> remaining failures are due to rounding differences that are desirable.
>> >> As such, we've moved our efforts to a public branch on the WebKit.org
>> >> svn server, and would love early feedback and advice. Our branch
>> >> currently runs the following ports: Mac, Qt, Chromium-Linux, and
>> >> Chromium-Mac. Any advice or help bringing up other platforms would be
>> >> greatly appreciated.
>> >> You can check our work out here:
>> >> http://svn.webkit.org/repository/webkit/branches/subpixellayout
>> >> (currently branched from r98654 and we'll continue to track head by a
>> >> day or two)
>> >> Thanks,
>> >> Emil and Levi
>> > _______________________________________________
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>> > webkit-dev at lists.webkit.org
>> > http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
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