[Webkit-unassigned] [Bug 73952] canvas/philip/tests/2d.imageData.put.unchanged.html expects putImageData/getImageData to exactly preserve unpremul-alpha pixel values

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=73952


Stephen White <senorblanco at chromium.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |senorblanco at chromium.org




--- Comment #1 from Stephen White <senorblanco at chromium.org>  2011-12-06 15:01:21 PST ---
Actually, I think the test link is referring to this statement:

"The handling of pixel rounding when the specified coordinates do not exactly map to the device coordinate space is not defined by this specification, except that the following must result in no visible changes to the rendering # 2d.imageData.put.unchanged :

context.putImageData(context.getImageData(x, y, w, h), p, q);"

So although the mult/premult changes are lossy, in order to be spec-compliant, I think you have to be value-preserving over one roundtrip.

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.