[cairo] Stange alpha channel problem.

[Vladimir Vukicevic]

I haven't tried it -- we had a problem in mozilla where we were
quantizing down to 16bpp in some cases and then reading back from that
to composite, thus introducing precision errors which manifested
themselves in the same way that you describe (painting with fully
transparent OVER gradually darkened the image).  So I was wondering if
it might be another instance of that type of bug, but it doesn't sound
like it.

    - Vlad

On 6/13/06, Paul Giblock <drfaygo at gmail.com> wrote:
> Vlad -
>
> No, according to my xorg.conf and xvinfo, my laptop is running at
> 24bits.  What does my program during your test? I assume it runs fine?
>
> -Paul
>
> On 6/14/06, Vladimir Vukicevic <vladimirv at gmail.com> wrote:
> > On 6/13/06, Paul Giblock <drfaygo at gmail.com> wrote:
> > > I just tried to run this source on my desktop.  I forgot to mention a
> > > few things:  you must add -lX11 to your compile line.  You may have to
> > > add #include <stdlib.h> to the source.
> > >
> > > Finally, on my desktop there is no darkening problem. The darkening
> > > still occurs on my laptop.  Both systems are running cairo-1.1.6.
> >
> > Is your laptop X server running in 16-bit color mode, and your deskop in 24/32?
> >
> >     - Vlad
> >
>
>