Bug 50849 – [Qt] StillImage::draw() should use ContextShadow

• Component: Canvas
• Status: RESOLVED FIXED

[Helder Correia]

The branch that checks for a shadow requirement in StillImage::draw() is executed when drawing a canvas onto a canvas with ctx1.drawImage(canvas2, x, y).  The current implementation supports solid shadows only.  And if transformations are present, the offset gets transformed as well.  Thus, ContextShadow must be used instead in order to support blur and correct offset transformations.

[Helder Correia]

Created attachment 76268 [details]
Patch

[Eric Seidel (no email)]

Comment on attachment 76268 [details]
Patch

LGTM.  Assuming your test case failed before this change.

[WebKit Commit Bot]

Comment on attachment 76268 [details]
Patch

Clearing flags on attachment: 76268

Committed r73889: <http://trac.webkit.org/changeset/73889>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Eric Seidel (no email)]

pfeldman seems to believe this caused failures on cr win/linux:
http://code.google.com/p/chromium/issues/detail?id=66683
That seems unlikely/impossible.

[Pavel Feldman]

(In reply to comment #5)
> pfeldman seems to believe this caused failures on cr win/linux:
> http://code.google.com/p/chromium/issues/detail?id=66683
> That seems unlikely/impossible.

Well, the new test introduced with this commit does not pass on chromium. Why unlikely/impossible?

Please follow the link to find the failure details: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#master=ChromiumWebkit&tests=canvas-draw-canvas-on-canvas-shadow.html

Click "Show results" link and also click the rightmost vertical red bar in the test timeline to see the commit that caused the regression. It this case it is http://trac.webkit.org/changeset/73889 that you reviewed.