WebKit Bugzilla
New
Browse
Log In
×
Sign in with GitHub
or
Remember my login
Create Account
·
Forgot Password
Forgotten password account recovery
RESOLVED WONTFIX
55514
[chromium] invalidating a rotated border causes different pixels to be painted
https://bugs.webkit.org/show_bug.cgi?id=55514
Summary
[chromium] invalidating a rotated border causes different pixels to be painted
Tony Chang
Reported
2011-03-01 15:01:27 PST
Repro steps: 1) Load the attached file in test_shell.exe. You should see a box rotated 20deg. 2) Drag the window off screen and back. 3) If you look carefully, you'll see that the edge is now a tiny bit different (a bit darker?). If you reload, the edges return to the lighter state. I suspect this is a problem in skia since I couldn't repro on mac. It's also hard to repro on Chromium because it saves a backing store of the image. It's the extra invalidate that causes the border to change.
Attachments
test case
(255 bytes, text/html)
2011-03-01 15:01 PST
,
Tony Chang
no flags
Details
better test case
(342 bytes, text/html)
2011-03-01 15:54 PST
,
Tony Chang
no flags
Details
initial load
(22.04 KB, image/png)
2011-03-01 15:55 PST
,
Tony Chang
no flags
Details
after invalidate
(21.79 KB, image/png)
2011-03-01 15:56 PST
,
Tony Chang
no flags
Details
Show Obsolete
(1)
View All
Add attachment
proposed patch, testcase, etc.
Tony Chang
Comment 1
2011-03-01 15:01:47 PST
Created
attachment 84303
[details]
test case
James Robinson
Comment 2
2011-03-01 15:15:24 PST
Can you post before/after screenshots of what you are seeing?
Tony Chang
Comment 3
2011-03-01 15:54:57 PST
Created
attachment 84314
[details]
better test case
Tony Chang
Comment 4
2011-03-01 15:55:31 PST
Created
attachment 84315
[details]
initial load
Tony Chang
Comment 5
2011-03-01 15:56:04 PST
Created
attachment 84316
[details]
after invalidate
Tony Chang
Comment 6
2011-03-01 15:56:42 PST
(In reply to
comment #3
)
> Created an attachment (id=84314) [details] > better test case
This shows a much more noticeable difference. The original test case only differed by a dozen pixels or so.
Stephen Chenney
Comment 7
2013-04-11 13:21:42 PDT
https://code.google.com/p/chromium/issues/detail?id=230544
Note
You need to
log in
before you can comment on or make changes to this bug.
Top of Page
Format For Printing
XML
Clone This Bug