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Re: [css-compositing] some proposals

From: Rik Cabanier <cabanier@gmail.com>
Date: Sun, 20 Nov 2011 20:50:05 -0800
Message-ID: <CAGN7qDArV55BnUdrn+qv0Vv-rVZ+rsUR3HjDstKtryUvsP75pg@mail.gmail.com>
To: Cyril Concolato <Cyril.Concolato@cisra.canon.com.au>
Cc: www-svg <www-svg@w3.org>, "public-fx@w3.org" <public-fx@w3.org>, "Alex Danilo (alex@abbra.com)" <alex@abbra.com>
On Sun, Nov 20, 2011 at 4:29 PM, Cyril Concolato <
Cyril.Concolato@cisra.canon.com.au> wrote:

>  Hi Rik, Alex,
> Just to make sure I understand the proposal. What would happen if you
> apply the ‘dst-atop’ compositing operator with partially transparent
> objects together with say a ‘plus’ blending operator. I understand that the
> ‘plus’ would only apply on the intersection but I’m not sure about the
> maths. Would you compose the equations, in which order? It doesn’t look
> like you can consider that the result of the (alpha-)compositing becomes
> the source (or destination) of the (color-compositing) blending ,does it?

No, blending/color-compositing happens first, followed by alpha-compositing.

Received on Monday, 21 November 2011 04:50:33 UTC

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