[chromium-bugs] Issue 2791 in chromium: semitransparent .png files is not shown correctly

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Comment #8 on issue 2791 by chris.othermedia: semitransparent .png files is  
not shown correctly
http://code.google.com/p/chromium/issues/detail?id=2791

I've come across this problem using the YUI Animation framework to fade up  
a 24 Bit
Transparent PNGs.

Any areas of the PNG that are not 100% opaque or Transparent are rendered  
with a
solid white background. E.g. a 50% transparent red pixel will be rendered  
as pink.

I have noticed that the white halo effect occurs only when the element (IMG  
tag or
background png) is given a CSS opacity value of other than 1 or 0.

I have tested this problem in Safari for windows and this problem doesn't  
occur.
Interestingly a similar problem occurs in IE7 too which leads me to believe  
that the
problem may reside in either Clear Type (is the text rendering chrome bug  
Issue 559 related?) or Skia (I think thats the rendering engine Chrome  
uses).

I have attached a test case that uses the Webkit Transition property below  
to
indicate that it is not Javascript related.



Attachments:
        chromebugtest.html  587 bytes
        red-sphere.png  4.5 KB

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