RESOLVED INVALID 60169
Add a test case that shows transparent windowless plugins are composited with the page's content 
https://bugs.webkit.org/show_bug.cgi?id=60169
Summary Add a test case that shows transparent windowless plugins are composited with...
Adam Roben (:aroben)
Reported 2011-05-04 08:18:55 PDT
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.
Attachments
Add attachment proposed patch, testcase, etc.
Adam Roben (:aroben)
Comment 1 2011-05-04 08:24:20 PDT
Maybe my test case difficulties were caused by using GDI, which is not really alpha-aware.
Adam Roben (:aroben)
Comment 2 2011-05-04 09:58:22 PDT
<rdar://problem/9382584>
Adam Roben (:aroben)
Comment 3 2011-05-05 14:36:09 PDT
Bug 60300 solves part of the mystery of why I couldn't get transparent plugins to show up.
Adam Roben (:aroben)
Comment 4 2011-05-05 14:36:49 PDT
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.
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