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Re: Compositing math in SVG

From: Rik Cabanier <cabanier@gmail.com>
Date: Tue, 10 Jul 2012 17:10:20 -0700
Message-ID: <CAGN7qDAWMcHbVDVYYxVWeH0b=FKOGHrYwacpd8B+XYgFCMk-wA@mail.gmail.com>
To: Calculemus <calculemus1988@gmail.com>, Sylvain Galineau <sylvaing@microsoft.com>
Cc: www-svg@w3.org
up until recently, the Microsoft blend modes were identical to the Adobe
ones.
It seems that they are attempted to rewrite some of them so they produce
premultiplied results but it's only partway there. Maybe that document is
just in a bad state...

Rik

On Tue, Jul 10, 2012 at 4:53 PM, Calculemus <calculemus1988@gmail.com>wrote:

> Thanks, good to know I don't have to worry about such things, I am working
> with floats.
>
> I see you have different formula than Microsoft for color burn:
>
>
> http://msdn.microsoft.com/en-us/library/windows/desktop/hh706313%28v=vs.85%29.aspx
>
> yours is here:
>
> http://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#blending
>
> I have collected many sources for blend modes and now I go through each to
> confirm the math for each blend mode multiple times.
>
Received on Wednesday, 11 July 2012 00:10:47 GMT

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