On Tue, Mar 11, 2003 at 07:05:03PM +0100, RaphaŽl Quinet wrote:
> It works that way because the GIMP uses post-multiplied alpha and you
> know it.  If we were having this discussion about a program that uses
> pre-multiplied alpha (this is common in game editors, for example),
> then things would be very different.

The apps with pre-multiplied alpha are lossy, and they know it. They do
it because it's faster, or just because it's become traditional. We
should not model ourselves on them IMHO.

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