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

[Marco Hugentobler]

Hi Maciek,

> I've been doing some QGIS rendering benchmarks. Before I go on, can you
> please verify if I got it correctly:

I would say it is like this (afaik at least on X11):

FPWIFP on = QPixmap = rendering on graphics card
MLALJ on = QImage + antialiasing = software rendering
both off = QImage without antialiasing = software rendering

Regards,
Marco

Am Mittwoch 16 April 2008 19:25:36 schrieb Maciej Sieczka:
> Marco Hugentobler pisze:
> > Am Mittwoch 16 April 2008 08:48:54 schrieb Maciej Sieczka:
> >>> So should it be faster or slower with with FPWIPF enabled?
> >
> > It is not faster or slower for everything, it depends on what you do.
> >
> > If your X-server configuration is very slow in drawing transparency,
> > then it is logical consequence that the transparent round vertex
> > markers in digitising mode are rendered slowly.
>
> (Another shortcut for clarity - "Make line appeer less jagged" = MLALJ)
>
> I've been doing some QGIS rendering benchmarks. Before I go on, can you
> please verify if I got it correctly:
>
> FPWIFP on = QPixmap = hardware rendering
> MLALJ on = QImage + transparency = software rendering, more CPU use
> both off = QImage = software rendering, less CPU use
>
> Does that look correct?
>
> Maciek



-- 
Dr. Marco Hugentobler
Institute of Cartography
ETH Zurich
Technical Advisor QGIS Project Steering Committee