In my limited testing with some of my most node & filter intensive files... It's SO much faster now it's not even funny. We're in the big leagues people! (note: I didn't check memory use or anything yet, not that I'm doubting, just saying that I'm running with scissors and okay with that)

Cheers,
Josh

2011/7/9 Krzysztof Kosiński <tweenk.pl@gmail.com>
Hello all

The branch at lp:~tweenk/inkscape/gsoc-caching contains the first
testable features of my performance improvement project. The SVG
drawing is rendered to a separate surface, so it doesn't need to be
redrawn every time there is an editing control drawn over it. The
responsiveness of path highlighting in complex documents is improved
dramatically. If you turn off real-time updates of paths and leave
only real-time updates of outlines on in node editor preferences,
there is also a significant improvement in responsiveness when editing
complex filtered paths.

To fix some breakage with clipped groups (appears to be a Cairo
problem, but I couldn't isolate it) I have substantially changed the
rendering pipeline. Clipping paths are now rasterized and the drawing
is composited with them using the IN operator. This allows us to
handle nested clipping paths and clip-rule correctly. As an unrelated
improvement, text objects can now be used as clipping paths.

Regards, Krzysztof

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