Brent, 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. Thanks. -Xiong On Fri, Mar 27, 2009 at 1:54 PM, Brent Fulgham <[email protected]> wrote: > Xiong, > 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 > it. > > 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. > > -Brent > > > 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 <[email protected]> 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. >> >> https://bugs.webkit.org/show_bug.cgi?id=22891 >> >> 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. >> >> Thanks, >> >> -Brent >> >> >> 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~ >>> >>> FYI: >>> [Following address are the screenshots] >>> >>> Render OK when not scroll: >>> >>> http://picasaweb.google.com/lh/photo/ybhIcahTEgsfBmMzXM13-g?feat=directlink >>> >>> Render error when scroll: >>> >>> http://picasaweb.google.com/lh/photo/0B8fi1ZTZ7hWH0S86a5RJA?feat=directlink >>> >>> http://picasaweb.google.com/lh/photo/_ScHyJBOmJ8-xbRB_aZ2NQ?feat=directlink >>> >>> http://picasaweb.google.com/lh/photo/Ael-gWdHEVnEtu_qbMFOZw?feat=directlink >>> >>> BTW: >>> I am using following version of packages and running DirectFB without >>> any acceleration on my embeded target. >>> WebKit-r40777 >>> gtk+-2.12.12 >>> cairo-1.4.14 >>> DirectFB-1.2.6 >>> >>> Thanks. >>> >>> -xiong >>> _______________________________________________ >>> webkit-dev mailing list >>> [email protected] >>> http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev >>> >> >> > >
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