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Re: Filter Templates

From: Robert O'Callahan <robert@ocallahan.org>
Date: Mon, 7 Feb 2011 12:56:14 +1300
Message-ID: <AANLkTi=ZrXfOV-e_qwWXpwUHs6OiJ92scvFPv55aQ8xb@mail.gmail.com>
To: Rik Cabanier <cabanier@adobe.com>
Cc: Cameron McCormack <cam@mcc.id.au>, Brad Kemper <brad.kemper@gmail.com>, www-style list <www-style@w3.org>, "public-fx@w3.org" <public-fx@w3.org>
On Mon, Feb 7, 2011 at 11:06 AM, Rik Cabanier <cabanier@adobe.com> wrote:

> I never heard back on my proposal.
>
> Is it because it’s too limited or doesn’t rely on SVG?
>
>
>
> I believe the CSS filters need to be very simple so
>
> -          They can be accelerated on the GPU
>
> -          The can be implemented by browsers that choose not to implement
> SVG filters.
>

I don't think those are reasons to make CSS filters simple. I don't think
any significant browser is going to refuse to implement SVG filters
indefinitely. And it is not necessary to keep CSS filters simple for them to
be GPU-accelerated. Blurred shadows are already relatively difficult to
implement on the GPU.

Individual CSS filters should be simple so that authors find them easy to
use. I suspect authors will find it difficult to remember how to use a
function with nine parameters, as you have proposed.

Rob
-- 
"Now the Bereans were of more noble character than the Thessalonians, for
they received the message with great eagerness and examined the Scriptures
every day to see if what Paul said was true." [Acts 17:11]
Received on Sunday, 6 February 2011 23:56:47 GMT

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