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[whatwg] Canvas Proposal: aliasClipping property

From: Robert O'Callahan <robert@ocallahan.org>
Date: Sat, 17 Oct 2009 02:25:49 +1300
Message-ID: <11e306600910160625l549e4036o36486ef33a6b0ad9@mail.gmail.com>
On Sat, Oct 17, 2009 at 1:06 AM, Philip Taylor
<excors+whatwg at gmail.com<excors%2Bwhatwg at gmail.com>
> wrote:

> I think the spec is clear on this (at least when I last looked; not
> sure if it's changed since then). Image A is infinite and filled with
> transparent black, then you draw the shape onto it (with no
> compositing yet), and then you composite the whole of image A (using
> globalCompositeOperation) on top of the current canvas bitmap. With
> some composite operations that's a different result than if you only
> composited pixels within the extent of the shapes you drew onto image
> A.
>

Ah, so you mean Firefox is right in this case?

Rob
-- 
"He was pierced for our transgressions, he was crushed for our iniquities;
the punishment that brought us peace was upon him, and by his wounds we are
healed. We all, like sheep, have gone astray, each of us has turned to his
own way; and the LORD has laid on him the iniquity of us all." [Isaiah
53:5-6]
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