Closed
Bug 643571
Opened 13 years ago
Closed 13 years ago
error in compositing with globalCompositeOperation copy using drawimage and fillrect
Categories
(Core :: Graphics: Canvas2D, defect)
Tracking
()
RESOLVED
INVALID
People
(Reporter: martinbraun, Unassigned)
References
Details
Attachments
(4 files, 1 obsolete file)
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0) Gecko/20100101 Firefox/4.0 Build Identifier: http://download.mozilla.org/?product=firefox-4.0rc2&os=win&lang=de Compositing with globalCompositeOperation="copy" seems to be flawed in FF4.0RC2. Please see the attached screenshots and code for details. The behaviour is correct in FF3.6 and Chrome 11. InternetExplorer 9.0 and Opera 11 behave the same as FF4.0. Note: The shown case might be a corner case not explicitly formulated in the HTML5 Specification thus it might be controversial if this is a bug. Also so far i have not found any official test cases checking for this case. I believe however the behaviour in FF3.6 and Chrome 11 is correct. Reproducible: Always Actual Results: see attachments
Reporter | ||
Comment 1•13 years ago
|
||
Reporter | ||
Comment 2•13 years ago
|
||
Reporter | ||
Comment 3•13 years ago
|
||
Reporter | ||
Comment 4•13 years ago
|
||
Reporter | ||
Comment 5•13 years ago
|
||
Attachment #520757 -
Attachment is obsolete: true
Comment 6•13 years ago
|
||
For that testcase, the behavior change range is: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=3202d6d22192&tochange=abb82f981e02 So presumably this is a result of bug 366283. If I read that bug correctly, this is a purposeful change to match what the canvas spec says.
Blocks: 366283
Yes, FF4, IE9 and Opera 11 are following the spec, and Chrome and FF3.6 are not.
Status: UNCONFIRMED → RESOLVED
Closed: 13 years ago
Resolution: --- → INVALID
You need to log in
before you can comment on or make changes to this bug.
Description
•