Re: pBuffer
Phil Keslin (philk++at++cthulhu.engr.sgi.com)
Thu, 10 Dec 1998 10:32:05 -0800
Rob Jenkins wrote:
>
> Ruediger Westermann wrote:
> >
> > Hi Rob,
> > Many thanks for your reply.
> > The thing i don't understand is that i search the list
> > until i find the configuration i want to have (8,8,8,8,>1).
> > I only select the visual if the requirement is satisfied.
> > However, sometimes there is only one entry (12,12,12,12,24)
> > in the list, which can not be allocated.
> >
> > Any idea ?
> >
>
> Hi
>
> I CC'd this back to the list in case anyone else was tuned in, I know a
> few people have/are grappling with this kinds of issues.
>
> In my first response I thought you were doing 'bits >= 8' but actaully
> you do 'bits == 8' so my words about getting RGBA12 first might not be
> relevent.
> The other stuff about considering you minimal config and fallback cases
> is valid though.
> The missing piece in this is probably the PixBuffer::configAttribList
> that you use, could you post that and I'll take another swing :-)
The answer to the question is very dependent upon the target graphics
hardware and the current framebuffer configuration. Some machines won't
have sufficient resources to allocate depth and color buffers for a
pbuffer simultaneously. If you tell me what configs you are trying to
support, I might be able to give you a better feel what you can and
cannot do.
- Phil
--
Phil Keslin <philk++at++engr.sgi.com>
This archive was generated by hypermail 2.0b2
on Thu Dec 10 1998 - 10:32:13 PST