[cairo] Progressive slowness
jeff at infidigm.net
Thu Oct 11 14:08:37 PDT 2007
On Thu, Oct 11, 2007 at 10:02:44PM +0200, Nicolas Rougier wrote:
> Hi all,
> I've been using cairo to do a very simple application in python: moving
> and zooming a box in a window. The app (see below) is ok but when I zoom
> in, the app is getting very slow and speed up again when I zoom out. I
> guess I did something wrong but I cannot find it. The only reason I see
> for the progressive slowness would be that I'm drawing part of the box
> far beyond the visible surface (when it's zoomed in) but I thought the
> clipping what responsible for handling such cases. Any idea ?
Looks like a rasterization problem. fbRaserizeEdges is spending a lot
of time in the kernel page faulting, which is a little weird.
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