Re: Performer 2.2.3 on textures

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Phil Keslin (philk++at++cthulhu.engr.sgi.com)
Tue, 26 Jan 1999 13:16:02 -0800

Maybe its because the O2 only has 10 bit texture addresses. That would
mean that the largest hardware supportable texture is 1Kx1K. I was
surprised to hear that you could at one time load larger textures. Not
knowing much about the Inventor loader, is it possible that for the case
that worked, that the image was downsampled to fit into texture?

- Phil

Jenny Zhao wrote:
>
> On Jan 26, 11:39am, Guillermo E. Gutierrez wrote:
> > Subject: Performer 2.2.3 on textures
> > Hi PfAll,
> >
> > I emailed last week about trouble loading a 2kx2k texture via the Inventor
> > loader into Performer 2.2.3 running on an O2 R10k w/IRIX 6.5.2f. I have a
> > followup on this same problem. I upgraded another O2 R10k over the weekend
> and
> > noticed that IRIX 6.5 (with Performer 2.2) worked fine (ie. loaded the
> texture
> > w/out any problem), but as soon as I installed the 6.5.2f overlays (which
> also
> > upgrades Performer DSOs to 2.2.3 from 2.2.1) the texture would no longer
> load.
> > The strange thing is that the loader also didn't complain nor did the app
> > crash. Perfly yielded the same results, claiming to have loaded the texture
> > but not doing so. All the other (smaller) textures loaded fine.
> >
> > Any help would be much appreciated. Might this be a bug? Thanks.
>
> I tried to reproduce your problem on an O2 with 6.5.2 installed.
> A 2kx2k texture can not be loaded in with Performer2.2, Performer2.2.1,
> or Performer2.2.3.
> Please open a call with the SGI customer support so they can
> help you debug your system.
>
> Thank you very much for pointing out this problem.
>
> --
> Jenny Zhao zhz++at++engr.sgi.com 650 933-5091
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-- 
Phil Keslin <philk++at++engr.sgi.com>

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