Bug 60169
| Summary: | Add a test case that shows transparent windowless plugins are composited with the page's content | ||
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| Product: | WebKit | Reporter: | Adam Roben (:aroben) <aroben> |
| Component: | Tools / Tests | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED INVALID | ||
| Severity: | Normal | CC: | bfulgham |
| Priority: | P2 | Keywords: | InRadar, PlatformOnly |
| Version: | 528+ (Nightly build) | ||
| Hardware: | PC | ||
| OS: | Windows 7 | ||
| Bug Depends on: | 57647 | ||
| Bug Blocks: | |||
Adam Roben (:aroben)
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.
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| Add attachment proposed patch, testcase, etc. |
Adam Roben (:aroben)
Maybe my test case difficulties were caused by using GDI, which is not really alpha-aware.
Adam Roben (:aroben)
<rdar://problem/9382584>
Adam Roben (:aroben)
Bug 60300 solves part of the mystery of why I couldn't get transparent plugins to show up.
Adam Roben (:aroben)
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.