[Cin] natron compositing modes

[Andrew Randrianasulu]

вс, 30 окт. 2022 г., 16:27 Andrew Randrianasulu <randrianasulu at gmail.com>:

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> вс, 30 окт. 2022 г., 15:59 Andrew Randrianasulu <randrianasulu at gmail.com>:
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>> вс, 30 окт. 2022 г., 15:20 Andrew Randrianasulu <randrianasulu at gmail.com
>> >:
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>>> for some reason I am confused. (again!) There is A as ARGB and there is
>>> a as alpha!
>>>
>>
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>> so looking at link provided here
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>> https://groups.google.com/g/natron-vfx/c/89V09-uzblc
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>> https://github.com/NatronGitHub/openfx-supportext/blob/master/ofxsMerging.h
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>> it seems divide provided as operation only on color channels? And what we
>> do with alpha in this and similar cases?
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>> or may be I read wrong source again ....
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> at some point GIMP also has layer math problem, see
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> https://bugzilla.gnome.org/show_bug.cgi?id=162395
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> namely different visual results in different versions and then on top of
> this question about old project files ....
>




some more discussion about blend modes


https://www.gimpusers.com/forums/gimp-developer/15081-overlay-mode-fix



>>
>>
>>> ---------- Forwarded message ---------
>>> От: Андрей Рандрианасулу <randrik at mail.ru>
>>> Date: вс, 30 окт. 2022 г., 14:36
>>> Subject: natron compositing modes
>>> To: randrianasulu <randrianasulu at gmail.com>
>>>
>>>
>>> a lot of them ..
>>>
>>> --
>>> Андрей  Рандрианасулу
>>>
>>
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