[whatwg] Canvas gradients color interpolation - change to premultiplied?
Tab Atkins Jr.
jackalmage at gmail.com
Sun Nov 28 10:04:06 PST 2010
On Fri, Nov 26, 2010 at 8:44 PM, Boris Zbarsky <bzbarsky at mit.edu> wrote:
> On 11/26/10 11:39 PM, Simon Fraser wrote:
>>> But CSS gradients are already requiring interpolation in premutiplied
>>> space, right?
>> I think you're thinking of CSS Transitions, which we decided should run in
> No. http://dev.w3.org/csswg/css3-images/#color-stop-syntax currently says:
> Between two color-stops, the line's color is linearly interpolated
> between the colors of the two color-stops, with the interpolation
> taking place in premultiplied RGBA space.
> and there was related discussion on www-style, iirc.
Note, though, that that's a relatively recent change that I made based
on dbaron's feedback. That said, in the thread where I made the
change, Simon expressed that he'd like Transitions and Gradients to
work the same way, and I read him as preferring premultiplied.
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