[gnome-love] Re: Canvas redraw priority

[Miguel de Icaza <miguel ximian com>]

Hello,

> > > The GNOME 1 version used GTK_PRIORITY_DEFAULT as the idle priority. With
> > > GNOME 2, Glib's HIGH priority completely removes any smoothness (which is
> > > to be expected since it blocks canvas redraws until the mouse's motion is
> > > stopped), but even LOW isn't nearly as smooth as the GNOME 1 version was.
> >
> > Could I get even a negative response (as in, 'yes the 2.0 canvas is
> > ass-slow compared to 1.4') here please? Wether we move to GNOME 2 or not
> > is going to seriously affect the Guikachu roadmap.
>
> The 2.0 canvas is bletcherously slow.  So slow I am contemplating a
> switch to the simplified 'foocanvas' module.

Most likely this is due because we are rendering into a pixmap, and then
rendering this pixmap into Gtk's own double-buffered pixmap, which is
later moved into the screen.

So we have two double buffering systems in place with the canvas, there
should only be one.

Miguel.