Currently we're pulling from master...which I think its advertising itself
as 1.1.  I'm sure you could knock out the --chnames flag faster than me,
specially if your doing a big refactor.  I'll work in getting those verbose
messages in place.  Thanks


On Wed, Apr 3, 2013 at 3:43 AM, Larry Gritz <[email protected]> wrote:

> Are you guys concerned primarily with master, or are you using 1.1?
>
> maketx is in transition right now; we're switching to a new code path
> (internal to libOpenImageIO, rather than all the good bits just in the
> maketx binary, and quite overhauled for performance improvements), so it's
> a bit different in master and 1.1.
>
> In this instance, it may be easier for me to make the --chnames change,
> unless you really had your heart set on trying it yourself.   (If you want
> to take a crack at something, the verbose messages thing you mentioned
> might be a good toe in the water.)
>
>
> On Apr 2, 2013, at 12:52 AM, Matt Chambers wrote:
>
> Ha, I didn't see that oiiotool option, I'm going to use that for now.
>
> I think think for most cases that is a good assumption...for a particular
> internal case we need it in R.  I'd love for there to be no extra step
> because then it makes this really easy for all departments when every
> single texture publish can be done with a single maketx command.
>
> I'd love to give it a try. Would I add a --chnames option that would just
> override the channel names for any operation?
>
> -Matt
>
>
> On Tue, Apr 2, 2013 at 8:36 PM, Larry Gritz <[email protected]> wrote:
>
>> Fundamentally, I think the problem is
>> with ImageSpec::default_channel_names ()  (in
>> src/libOpenImageIO/formatspec.cpp).  There's an assumption that if channels
>> aren't named (hello, TIFF) and there's only one channel in an image, it
>> will be "A" in the absence of any other information.  I dunno, maybe that's
>> a bad assumption, but nobody every complained before.
>>
>> oiiotool --chnames can be used after the fact to rename channels.  If you
>> don't want that extra step, we could probably put a similar option in
>> maketx directly.
>>
>> Yes, we would welcome the patch you describe (or any other).
>>
>> -- lg
>>
>>
>> On Apr 2, 2013, at 12:25 AM, Matt Chambers wrote:
>>
>> Yeah, pretty much.  The input image is 1 channel, I need it to go into R,
>> not A...an internal thing.  I've poked around the code a bit but I can't
>> tell where its happening.  I'd be happy to add an option if you can point
>> me to the right place.
>>
>> Also, somewhat related, my colleagues have been using (or trying to use)
>> a lot of the optimization options like monochrome-detect and opaque detect,
>> but there is actually a few other checks maketx does before enabling those
>> options.  Can I push you a patch where in verbose mode it would tell you if
>> those things were ignored because they conflicted with another option or
>> the number of channels in the source image was too high?
>>
>> -Matt
>>
>>
> --
> Larry Gritz
> [email protected]
>
>
>
> _______________________________________________
> Oiio-dev mailing list
> [email protected]
> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
>
>
_______________________________________________
Oiio-dev mailing list
[email protected]
http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org

Reply via email to