[Webkit-unassigned] [Bug 35146] Support tiled backing store

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=35146





--- Comment #28 from Antti Koivisto <koivisto at iki.fi>  2010-03-08 03:52:16 PST ---
(In reply to comment #27)
> (From update of attachment 50031 [details])
> 
> > +#if PLATFORM(QT)
> > +    QPixmap* m_buffer;
> > +    QPixmap* m_backBuffer;
> > +    QRegion* m_dirtyRegion;
> > +#endif
> 
> I think it would be more efficient (less mallocs, less indirections) to store
> the pixmaps and regions by value. QPixmap itself holds only a pointer to the
> private as member variable. The same applies to QRegion.

I prefer doing it this way since I can forward declare the classes and avoid
Qt-specific includes. The overhead from the extra allocations and indirection
is minimal.

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