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Bug 8120 - Shoud their be any reason that two circles, pure white, alpha =1, drawn in xor mode, do not overlap each other perfectly and then do not "cancel" each other ? (this works with rects). Same effect in Safari and firefox. Thanks
Summary: Shoud their be any reason that two circles, pure white, alpha =1, drawn in xo...
Status: RESOLVED NEEDSINFO
Alias: None
Product: HTML WG
Classification: Unclassified
Component: pre-LC1 HTML5 spec (editor: Ian Hickson) (show other bugs)
Version: unspecified
Hardware: Other other
: P3 normal
Target Milestone: LC
Assignee: Ian 'Hixie' Hickson
QA Contact: HTML WG Bugzilla archive list
URL: http://www.whatwg.org/specs/web-apps/...
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-10-28 21:55 UTC by contributor
Modified: 2010-10-04 14:56 UTC (History)
4 users (show)

See Also:

Attachments

Description contributor 2009-10-28 21:55:02 UTC 
Section: http://www.whatwg.org/specs/web-apps/current-work/#complex-shapes-(paths)

Comment:
Shoud their be any reason that two circles, pure white, alpha =1, drawn in xor mode, do not overlap each other perfectly and then do not "cancel" each other ? (this works with rects). Same effect in Safari and firefox. Thanks

Posted from: 82.248.109.143
Comment 1 Ian 'Hixie' Hickson 2009-12-13 15:38:43 UTC 
I believe that antialiasing can be the cause of this, but I could be wrong. Anyone?