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Re: [E-devel] Premultiply or not
On Mon, 3 Jul 2006 15:17:18 -0500 email@example.com babbled:
> On Tue, Jul 04, 2006 at 12:11:10AM +0900, Carsten Haitzler wrote:
> > On Sun, 2 Jul 2006 23:57:15 GMT "firstname.lastname@example.org" <email@example.com>
> > babbled:
> > > But, "setting" a color space, either globally or per obj,
> > > has only one real meaning - that the color space in question is
> > > going to be used as the current context for gfx ops.
> > oooh no - for me it means that became the api with which u dealt with evas.
> > evas internally would do whatever it damn well pleased. :) the only
> > guarantee u had is that u could present data in format X and get it back in
> > format X. what happend later was entirely out of scope and goign to happen
> > in premul ARGB.
> With the added stipulation that the data returned may not be exactly the
> data given (due to colorspaces not mapping 1-1 on each other). Unless
> you plan on keeping the untouched data around somewhere (which would
> double the memory usage).
correct. non-premul to premul is destructive. VISUALLY it will look the same
when composited, BUT this should be an understanding - correct.
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------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler) firstname.lastname@example.org
Tokyo, Japan (東京 日本)