On August 16, 2010, David Hyatt wrote: > There is a temporary method implemented by all ports called: > > bool drawsUsingCopy() const; // If the image buffer has to > render using a > copied image, it will return true. > > This method only exists right now because some of the ports are still > copying. Once everyone has switched over to drawing the image buffer > without making copies, then I can remove this method from the interface. > HTMLCanvasElement is using it in order to cache a copy of the image for > repeated drawing of a static canvas, so that the "copying" platforms don't > suffer a performance degradation from my changes.
The OpenVG backend (should I ever get around to spare some more time reorganizing my commits and upstreaming more of it) will always need a copying fallback, because the size of the ImageBuffer might exceed the maximum OpenVG image size. So there's a fallback code path that uses plain EGL pbuffer surfaces instead, for which there is no formal maximum size, unless it's an implementation-specific one. Cheers, Jakob _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
