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bug #21367: Alpha displayed incorrectly in agg renderer

Submitter:  Benjamin Wolsey <bwy>
Submitted:  Thu 18 Oct 2007 06:09:52 PM UTC
   
 
Category:  render-agg Severity:  3 - Normal
Release:  None Status:  Duplicate
Privacy:  Public Assigned to:  None
Open/Closed:  Closed
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Mon 07 Jan 2008 03:18:38 PM UTC, comment #2: 

Closing because it's a duplicate.

Benjamin Wolsey <bwy>
Group Member
Mon 29 Oct 2007 08:17:31 AM UTC, comment #1: 

Looks like a duplicate of bug #19406.

I meant with 24, not 32-bit depth in my original report.

Benjamin Wolsey <bwy>
Group Member
Thu 18 Oct 2007 06:09:52 PM UTC, original submission:  

With 16-bit depth colour, parts of images that are supposed to be invisible clearly aren't. Zoomhenge is one example (png attached), where you can see a faint version of the main image in the background. Another is the tiger in this movie, which has a visible frame behind it:

1a29757f01957289ab38ae3ca2ec5916 http://www.weebls-stuff.com/flash/381kenya3.swf

If you look carefully, the tiger frame is still there with 32-bit depth. It's just more obvious in 16 bit.


Benjamin Wolsey <bwy>
Group Member

 

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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2008-01-07 bwy Open/ClosedOpen Closed
    2007-10-29 bwy StatusNone Duplicate
    2007-10-18 bwy SummaryAlpha Alpha displayed incorrectly in agg renderer
    2007-10-18 bwy Attached File- Added Bildschirmfoto-zoomhenge.swf.png, #14168

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