[webkit-dev] ［GTK］Scroll deficiency
browserwk at gmail.com
Sun Mar 29 19:02:50 PDT 2009
I just start to resolve the problem.
The "debug build" and "background color" hack you mentioned, i also
need time to try.
Please wait a reply.
I hope the member in the mail-list to join in the work, when see the subject
if you have the same symptom.
On Fri, Mar 27, 2009 at 1:54 PM, Brent Fulgham <bfulgham at gmail.com> wrote:
> I'm sorry you are encountering the problem, but I must admit I am glad
> someone else is seeing this issue as now we can pool our efforts to resolve
> Since you are using directfb stuff, and I am on top of Windows, it seems
> the culprit is somewhere in the Cairo logic. Perhaps the dirty regions are
> not being computed properly (I have encountered a few places where the
> coordinate systems in Cairo and Windows don't agree).
> However, the kludge of setting a background color (does this work for you
> as well?) does not fit into the 'bad coordinate' theory, as I don't see how
> the presence of a background color in the rendering instructions would
> affect this.
> The fact that it does not happen for me in Debug builds makes me wonder if
> maybe there is some kind of improper initialization or buffer overrun that
> is involved.
> On Mar 26, 2009, at 10:48 PM, xiong wrote:
> Webkit r40777 Release builds for me.
> On Fri, Mar 27, 2009 at 1:25 PM, Brent Fulgham <bfulgham at gmail.com> wrote:
>> I wonder if your issue is related to one I documented on Windows (using
>> Cairo backend) a few months ago. Currently this only happens for me in
>> Release builds, but it's still quite annoying.
>> I attached a few images in my bug for comparison.
>> The easiest way to reproduce is to go to the http://planet.webkit.org and
>> try to scroll up/down the page using the scroll bar. After a short while
>> you will find areas of the page not rendered.
>> On Mar 26, 2009, at 9:54 PM, browserwk wrote:
>> Dear all:
>>> I am able to run webkit over directfb backend on arm platform - using
>>> GtkLauncher .
>>> The problem I face is that when I open
>>> http://www.google.com/intl/en/privacy.html using this browser and scroll
>>> the page; it results the visual area is not updated when scrolling, and
>>> the screen display confusion.
>>> Any ideas where to look to fix this issue ?
>>> Appreciate any clues~
>>> [Following address are the screenshots]
>>> Render OK when not scroll:
>>> Render error when scroll:
>>> I am using following version of packages and running DirectFB without
>>> any acceleration on my embeded target.
>>> webkit-dev mailing list
>>> webkit-dev at lists.webkit.org
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