Eugene Walden created FLEX-33437:
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Summary: Embed image with compression=true causes artifacts around
transparent edges (like a halo)
Key: FLEX-33437
URL: https://issues.apache.org/jira/browse/FLEX-33437
Project: Apache Flex
Issue Type: Bug
Components: Embedded Asset Transcoding
Affects Versions: Adobe Flex SDK 4.6 (Release)
Environment: MacOS, Flash Builder 4.6
Reporter: Eugene Walden
In Flex, if you embed a PNG image, you use the following tag:
[Embed(source="compressionbug.png")]
Unfortunately, the image is compiled into a raw bitmap, which is much larger
than the source PNG. In order to solve this, you typically add the compression
parameter:
[Embed(source="compressionbug.png", compression="true")]
This solves the filesize issue, but there's a bug that occurs with some images
with transparency.
This image, for example:
http://content.madefire.com/jira/CompressionBug/originalimage.html
will cause the problem to occur if compression is true.
Here is the Flex page that exhibits the halo around the image edges:
http://content.madefire.com/jira/CompressionBug/CompressionBug.html
The Flex project source is here:
https://s3.amazonaws.com/content.madefire.com/jira/CompressionBug.zip
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