Philip Taylor wrote:
[...]
Cool stuff! I'll look through your tests and fix up the mozilla
implementation as much as possible.
I would be happy if darker was removed from the spec - there isn't
an obvious definition for it, and it's not interoperably implemented
at all and it sounds like
I've added some tests at
http://canvex.lazyilluminati.com/tests/tests/index.2d.composite.transparent.html
based on the definitions I suggested. Firefox and Safari match the
expected results, Opera misses on atop/xor/lighter. (I skipped darker,
because it doesn't make sense and I'm hoping it'll
It has been mentioned before [1] that globalCompositeOperation is
poorly defined - the spec has a note saying The source-* descriptions
below don't define what should happen with semi-transparent regions
and is vague about non-transparent colours too - and it is not
implemented interoperably. I
/svg/newstuff/filterComposite2.svg
fwiw
David Dailey
- Original Message -
From: Philip Taylor [EMAIL PROTECTED]
To: whatwg@lists.whatwg.org
Sent: Tuesday, March 27, 2007 7:30 PM
Subject: [whatwg] Canvas - globalCompositeOperation
It has been mentioned before [1
On Friday 2006-07-21 09:07 -0700, L. David Baron wrote:
On Friday 2006-07-21 11:14 +0300, Henri Sivonen wrote:
I gather that a normative reference to the Porter–Duff paper is needed:
http://keithp.com/~keithp/porterduff/p253-porter.pdf
Perhaps, assuming that's what's been implemented,
On Friday 2006-07-21 11:14 +0300, Henri Sivonen wrote:
I gather that a normative reference to the Porter–Duff paper is needed:
http://keithp.com/~keithp/porterduff/p253-porter.pdf
Perhaps, assuming that's what's been implemented, although that would
only define 10 of the 12 operators in the
On Fri, 23 Jun 2006 03:50:39 +0200, L. David Baron [EMAIL PROTECTED]
wrote:
The values of globalCompositeOperation are very poorly defined:
http://www.whatwg.org/specs/web-apps/current-work/#globalcompositeoperation
Some math is probably needed; prose alone seems unlikely to be
sufficient.
The values of globalCompositeOperation are very poorly defined:
http://www.whatwg.org/specs/web-apps/current-work/#globalcompositeoperation
Some math is probably needed; prose alone seems unlikely to be
sufficient.
I made a quick test at:
http://dbaron.org/tests/canvas/composite-operations
On Thu, 22 Jun 2006, L. David Baron wrote:
The values of globalCompositeOperation are very poorly defined:
http://www.whatwg.org/specs/web-apps/current-work/#globalcompositeoperation
Some math is probably needed; prose alone seems unlikely to be
sufficient.
I agree; indeed I think there's
