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April 2009

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2009.04.27 19:49 "Question regarding unassociated alpha", by Amir Ebrahimi
2009.04.27 20:00 "Re: Question regarding unassociated alpha", by Chris Cox
2009.04.27 20:03 "Re: Question regarding unassociated alpha", by Amir Ebrahimi
2009.04.27 20:07 "Re: Question regarding unassociated alpha", by Chris Cox
2009.04.27 20:26 "Re: Question regarding unassociated alpha", by Edward Lam
2009.04.27 20:28 "Re: Question regarding unassociated alpha", by Edward Lam
2009.04.27 20:32 "Re: Question regarding unassociated alpha", by Amir Ebrahimi
2009.04.27 20:45 "Re: Question regarding unassociated alpha", by Edward Lam
2009.04.27 20:49 "Re: Question regarding unassociated alpha", by Edward Lam
2009.04.27 20:54 "Re: Question regarding unassociated alpha", by Amir Ebrahimi
2009.04.27 21:22 "Re: Question regarding unassociated alpha", by Bob Friesenhahn
2009.04.27 21:14 "Re: Question regarding unassociated alpha", by Daniel Mccoy
2009.04.27 21:33 "Re: Question regarding unassociated alpha", by Amir Ebrahimi
2009.04.28 20:37 "Re: Question regarding unassociated alpha", by Chris Cox
2009.04.28 22:12 "Re: Question regarding unassociated alpha", by Daniel Mccoy
2009.04.29 03:37 "Re: Question regarding unassociated alpha", by Bob Friesenhahn

2009.04.27 20:45 "Re: Question regarding unassociated alpha", by Edward Lam

Amir Ebrahimi wrote:
> 
> On Apr 27, 2009, at 1:26 PM, Edward Lam wrote:
> 
>> I think it's semantically supposed to always return 
>> pre-multiplied alpha images. 
> 
> Okay, so maybe a conditional define or read option is due?

Definitely, NOT a conditional define. Some way of specifying whether 
pre-multiplied images should be returned would be nice although I don't 
know offhand how you would do this without breaking ABI compatibility. 
You probably shouldn't expect to see it in libtiff unless you're willing 
to contribute suitable patches. :)

-Edward