[Qgis-user] Re: AW: [Qgis-developer] "Fix problems with incorectly filled polygons"issues

Maciej Sieczka tutey at o2.pl
Wed Apr 16 02:48:54 EDT 2008

Maciej Sieczka pisze:
> Hugentobler Marco pisze:

>> I think the thing that brings your performance down is transparency.
>> Editing markers and measuring rubber bands both use transparency (and
>> GRASS edits don't).
>> FPWIPF uses QPixmap to render (and is rendered on
>> the X-server). If FPWIPF is disabled, QImage is used which afaik is
>> pure software rendering.

> So should it be faster or slower with with FPWIPF enabled?
> Currently, with FPWIPF *enabled*, during digitizing rendering is 66 
> times worse, whereas outside digitising it is 2-3 times better. This 
> seems inconsistent.

Doesn't anybody really know why FPWIPF enabled slows down performance in 
digitizing mode but improves it once diigitizing is quit?

If QT version matters, I'm using 4.3.4.


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