Re: [Openexr-devel] Reading incomplete exr

[Ken McGaugh]

Florian Kainz wrote:
> Reading an incomplete image file should be possible.
>
> However, once you encounter the first missing scan line 
> or tile, you should close and re-open the file, so that 
> the library re-reads the file's scan line or tile directory.  
> The library does not scan the file for new pixels while the
> file is open.
>
> Florian

Thanks Florian.  I now see that my problem was that the
exr was stored in DECREASING_Y line order.  No matter what
I do, I cannot get one of these to read if the image is
incomplete.  I think the problem is in the reconstructLineOffsets
function in ImfInputFile.cpp, but I'm not certain.

I think we may be using DECREASING_Y exr's quite a bit, so
it would be very nice to have this work.

Thanks again.
--Ken