Re: [Openexr-devel] iif-optimisations branch tests

[Peter Hillman]

Hi Al,

Which view is hero in your input, and which branch did you build from?
The iif-optimisations branch doesn't fully support right-view-is-hero 
multiview EXRs. I think it would push black into the left view. The 
iif-weta branch supports both left and right view as hero. It is a 
redesign of iif-optimisations which keeps the ABI closer to 1.7.1

The develop branch also has optimisation as part of the EXR-2.0 
codebase, which should work for both left and right hero multiview files.

If symptoms persist there is a commented out line in 
ImfScanLineInputFile.cpp which disables the optimised path. That might 
help debug the problem:

// TODO-pk this disables optimization
// _data->optimizationMode._destination._format = 
Imf::OptimizationMode::PIXELFORMAT_OTHER;

Peter


On 04/03/2013 03:12 PM, Piotr Stanczyk wrote:
> Hi Al,
>
> I had a look and I can't seem to find any issues, which worries me as you may 
> be bumping into something not quite seen yet.
>
> Could you give me an idea as to what you were doing to prompt the failure? Are 
> you reading existing imagery with a tool linked against v2.0?
> Or are you writing out stereo images with v2 code base?
>
> Either way, what is exrheader giving you?
>
> Piotr
>
>
> ________________________________________
> From: address@hidden address@hidden on behalf of Al Crate address@hidden
> Sent: 02 April 2013 04:57
> To: address@hidden
> Subject: Re: [Openexr-devel] iif-optimisations branch tests
>
> On 20/03/13 10:32, Al Crate wrote:
> > Hi all,
> >
> > Just built the iff-optimised version, I tweaked the code in IlmImfTest
> > to spit out some timings between the aligned and unaligned tests.
> >
> > The timings are almost identical, which isn't what I'd expect, is there
> > anything I should be doing here to make this work, I also tried using
> > the optimised libraries in our playback tool and that showed little to
> > no speed improvements.
> >
> > I'm guessing I'm not using these correctly, is there some compiler
> > option I require or memory alignment needed?
> >
> > cheers
> >
> > al
> >
> >
> > _______________________________________________
> > Openexr-devel mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/openexr-devel
>
> I've noticed than stereo images don't seem to be working, it's missing
> the left channel (it's black).
>
> OpenExr 1.7.1 works as expected though, has something changed with this?
>
> Anyone else noticed this issue ?
>
> _______________________________________________
> Openexr-devel mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/openexr-devel
>
> _______________________________________________
> Openexr-devel mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/openexr-devel