On this issue, please take a look at this wiki page in the
pyprocessing project: http://code.google.com/p/pyprocessing/wiki/FlipPolicy

I have also created the pyprocessing-users group so that pyprocessing
issues may be discussed without inflicting it on the rest of the
pyglet community. See http://groups.google.com/group/pyprocessing-users

Cheers,

--Claudio

On Oct 18, 12:09 pm, Claudio Esperança <[email protected]>
wrote:
> You´re right. The accumulation buffer flip policy is there only
> because it provides a "bare bones" fallback when everything else
> fails, usually due to a fairly old board and/or bad driver. For recent
> boards and drivers, the default flip policy works as expected, and
> even when it does not, the FBO policy, which is fairly snappy, usually
> works. I am going write a short discussion about flip policies on the
> pyprocessing wiki to make this clear.
>
> Cheers,
>
> --Claudio
>
> On Oct 17, 3:01 pm, Tristam MacDonald <[email protected]> wrote:
>
> > 2009/10/17 Claudio Esperança <[email protected]>
>
> > > From the log you sent, it looks like either your board does not
> > > support accumulation buffer (which is unlikely), or pyglet's
> > > get_best_config is unable to find a suitable context configuration
> > > that supports an accumulation buffer. I've seen one other message in
> > > pyglet-users discussion group about problems with this, but the
> > > solution is not clear.
>
> > FYI, accelerated support for the accumulation buffer is very rare these
> > days. On pretty much all Macs, and a fair sprinkling of recent Windows
> > machines, requesting an accumulation buffer will cause software fallback.
>
> > These days, one should be performing accumulation operations on a
> > framebuffer object, using shaders for the more complicated blending
> > operations.
> > --
> > Tristam MacDonaldhttp://swiftcoder.wordpress.com/
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