[wxPython-users] Re: Trouble with drawing, I need some ideas :)

[Peter Damoc]

I was thinking that almost all drawing is done off-screen and that the
library that does the background drawing is the main reason for certain
performances issues.
I didn't imagine that the final blitting to the pdc could be that costly. :)

Peter
On 10/19/07, Robin Dunn <robin at alldunn.com> wrote:
>
> Peter Damoc wrote:
> > Out of curiosity, why does it varies so widely? Is Cairo really that
> slow?
> >
> > On 10/17/07, *Robin Dunn* <robin at alldunn.com <mailto:robin at alldunn.com>>
> > wrote:
> >
> >     Christopher Barker wrote:
> >
> >      > By the way, what is the performance like drawing (blitting)
> >     transparent
> >      > bitmaps with DC (or GC)? It used to be very, very, slow to Draw a
> >     masked
> >      > Bitmap to a DC.
> >
> >     I'm not sure, but I expect that it varies widely by platform.
>
> I wasn't really thinking about Cairo here, but more about how the
> different ports do their optimization of handling bitmap data,
> transporting it to/from the display buffer, what APIs are available from
> the platform, what has to be done to make those APIs conform to the wx
> API, etc.
>
> --
> Robin Dunn
> Software Craftsman
> http://wxPython.org  Java give you jitters?  Relax with wxPython!
>
>
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