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

[codesite-noreply]

Comment #6 on issue 2791 by tahlyn: semitransparent .png files is not shown  
correctly
http://code.google.com/p/chromium/issues/detail?id=2791

Chrome Version: 0.4.154.31

URL: see attached zip (png_opacity.zip; 73.2k)

browsers tested:
      Safari 3.2.1: OK
     Firefox 3.0.4: OK
        Opera 9.61: OK
              IE 7: not working
              IE 6: not working
Chrome 0.4.154.31: not working

What steps will reproduce the problem?
- open zip file and uncompress to desktop.
- open "png_opacity.htm" in Chrome

Expected result:
- transparent PNG should fade in smoothly.

What happens instead?
- on page load, transparent PNG appears solid white momentarily and only  
then
transitions to semi-transparent state.

additional comments:

attached is an example page (see attached zip) to show that opacity with a
transparent PNG isn't working properly.

- attached zip (png_opacity.zip)
- png_opacity.htm
- jquery-1.2.6.js (latest uncompressed version)
- main1.jpg (background image)
- back_text1.png (transparent PNG; white block with 50% opacity to layer in  
Photoshop
CS3)

jQuery is used to "fade in" back_text1.png (id panelText in css).

In Chrome (version 0.4.154.31), you can easily see the "pop"  
of "back_text1.png" as a
solid white graphic (which it is not) on page load.  Just keep re-loading  
the page to
see the "pop" effect.

In other browsers except Internet Explorer 7 (which is broke in another way  
with
transparent PNGs and opacity being applied to them), the behavior is normal  
with
"back_text1.png" fading in normal in a smooth transition.

Chrome is eventually rendering the behavior properly, but it seems to take  
a moment
to get it correct.

Attachments:
        png_opacity.zip  73.2 KB

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