40147 2010-06-03 16:22:26 -0700 [Canvas] Should pass canvas/philip/tests/toDataURL.jpeg.alpha.html 2012-04-18 20:49:22 -0700 1 1 1 Unclassified WebKit Canvas 528+ (Nightly build) Mac OS X 10.6 RESOLVED DUPLICATE 68366 P3 Trivial --- 46506 48575 49365 83973 1 mdelaney7 webkit-unassigned adele ddkilzer jbauman kangax mdelaney7 noel.gordon pkasting oldest_to_newest 233977 0 mdelaney7 2010-06-03 16:22:26 -0700 For image types that do not support an alpha channel, the image must be composited onto a solid black background using the source-over operator, and the resulting image must be the one used to create the data: URL. Need support to pass this test under CG. 314838 1 noel.gordon 2010-11-29 20:26:06 -0800 Sought clarification on the this section of the <canvas> spec, bug filed. http://www.w3.org/Bugs/Public/show_bug.cgi?id=11431 issue #1 Safari and Chrome-Mac don't composite JPEG toDataURL onto black. Needs a fix near http://trac.webkit.org/browser/trunk/WebCore/platform/graphics/cg/ImageBufferCG.cpp?rev=70143#L354 to specify the background color via dictionary key kCGImageDestinationBackgroundColor issue #2 philip test toDataURL.jpeg.alpha Is this test correct? Should the alpha channel be ignored (philip test), or should the unpremultiplied RGB values be used instead (FireFox, Safari). http://www.w3.org/Bugs/Public/show_bug.cgi?id=11431 to resolve. 319851 2 mihaip 2010-12-09 18:24:29 -0800 *** Bug 48580 has been marked as a duplicate of this bug. *** 332814 3 noel.gordon 2011-01-11 17:18:28 -0800 issue #2 philip test toDataURL.jpeg.alpha resolved http://www.w3.org/Bugs/Public/show_bug.cgi?id=11431 WONTFIX, the toDataURL.jpeg.alpha test is correct wrt the <canvas> spec text. Updated chrome linux/win32 to conform to the standard on bug 51237 351662 4 pkasting 2011-02-15 15:36:10 -0800 This test no longer seems to be failing on Chromium Mac. Removing it from test_expectations.txt. Please reopen if this is incorrect. 363865 5 noel.gordon 2011-03-08 00:12:45 -0800 LayoutTests/platform/mac-snowleopard/canvas/philip/tests/toDataURL.jpeg.alpha-expected.txt contains Failed assertion: got pixel [193,255,192,255] at (50,25), expected [63,127,63,255] +/- 8 That's the result I see on chrome-mac, safari-mac at ToT webkit when I run the test. So still not fixed, reopening this bug. 364035 6 pkasting 2011-03-08 10:58:39 -0800 Sounds like someone committed "expected failure" results and we need to fix them. 473479 7 jbauman 2011-09-26 15:46:49 -0700 Seems to be fixed (with corrected expected result) in 68366. *** This bug has been marked as a duplicate of bug 68366 *** 473635 8 noel.gordon 2011-09-26 19:21:46 -0700 For the record, dictionary key kCGImageDestinationBackgroundColor didn't help.