60169 2011-05-04 08:18:55 -0700 Add a test case that shows transparent windowless plugins are composited with the page's content 2022-02-11 13:45:56 -0800 1 1 1 Unclassified WebKit Tools / Tests 528+ (Nightly build) PC Windows 7 RESOLVED INVALID InRadar, PlatformOnly P2 Normal --- 57647 1 aroben webkit-unassigned bfulgham oldest_to_newest 397925 0 aroben 2011-05-04 08:18:55 -0700 Bug 57647 represented transparent windowless plugins being incorrectly composited with the page's content. I had trouble writing a test case but wanted to get the fix landed. This bug represents writing a test case. 397930 1 aroben 2011-05-04 08:24:20 -0700 Maybe my test case difficulties were caused by using GDI, which is not really alpha-aware. 398008 2 aroben 2011-05-04 09:58:22 -0700 <rdar://problem/9382584> 399055 3 aroben 2011-05-05 14:36:09 -0700 Bug 60300 solves part of the mystery of why I couldn't get transparent plugins to show up. 399057 4 aroben 2011-05-05 14:36:49 -0700 Specifically, I was using ::GradientFill in my plugin, which zeroes out the alpha channel of the bitmap. Presumably I could have gotten the plugin to show up had I manually filled in the alpha channel with 1, or used ::AlphaBlend with a constant opacity.