Closed
Bug 87153
Opened 23 years ago
Closed 23 years ago
Transparent PNG canvas color visible on different colors
Categories
(Core :: Graphics: ImageLib, defect)
Tracking
()
People
(Reporter: SkewerMZ, Assigned: pavlov)
Details
Attachments
(2 files)
Procedure: Load the testcase. The testing procedure places a PNG image with 100%
transparency set to a bright green color on a range of different colors.
Expected: Areas with 100% transparency are displayed 100% transparent. When the
image is placed on top of a background that is #CCCCCC, the transparent areas
should change to #CCCCCC, and nothing else.
Actual: The browser mixes the 100% transparent areas with the colors beneath the
image. The transparent color is #00FF00, but when placed on top of a background
that is #CCCCCC, the transparent areas will change to #CCFFCC. In other words,
the browser will make each of the red, green, and blue values in the transparent
area lighter but not darker. Ironically, the infamous PNG renderer in IE5.5
actually displays the testcase correctly.
Build: 2001062004 Win98.
Comment 3•23 years ago
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Status: NEW → RESOLVED
Closed: 23 years ago
Resolution: --- → DUPLICATE
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Description
•