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Re: CSS3 transition strangeness when using background-color:transparent;

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Fri, 29 Jan 2010 09:12:10 -0600
Message-ID: <dd0fbad1001290712m20e9ea56ge2595b1e111bdddb@mail.gmail.com>
To: Boris Zbarsky <bzbarsky@mit.edu>
Cc: www-style <www-style@w3.org>
On Fri, Jan 29, 2010 at 9:02 AM, Tab Atkins Jr. <jackalmage@gmail.com> wrote:
> On Fri, Jan 29, 2010 at 9:00 AM, Boris Zbarsky <bzbarsky@mit.edu> wrote:
>> On 1/29/10 9:47 AM, Tab Atkins Jr. wrote:
>>> Maybe.  I'm trying to understand your previous email, but I'm pretty
>>> sure you typo'd on a few places
>>
>> I just double-checked, and the one typo I see is that
>>
>>  rgbap(255(t-1), 255(1-5), 255(1-t), 1-t)
>>
>> should be:
>>
>>  rgbap(255(1-t), 255(1-t), 255(1-t), 1-t)
>
> That's the one.  I was counted the two things in parens as separate.
> I was pretty sure two of those were wrong, but I couldn't figure out
> which.  ^_^

All right, I still don't have a great intuition yet on how precisely
color blending operates in the two spaces, but from what I've gathered
transitioning in premultiplied space does indeed match expectations,
at least approximately.

~TJ
Received on Friday, 29 January 2010 15:13:03 GMT

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