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https://issues.apache.org/jira/browse/BATIK-1170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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simon steiner resolved BATIK-1170.
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Resolution: Fixed
Assignee: simon steiner
> [PATCH] Workaround for incorrect ColorConvertOp alpha handling breaks masking
> -----------------------------------------------------------------------------
>
> Key: BATIK-1170
> URL: https://issues.apache.org/jira/browse/BATIK-1170
> Project: Batik
> Issue Type: Bug
> Affects Versions: 1.8
> Reporter: Jan Tošovský
> Assignee: simon steiner
> Attachments: BATIK-1170.patch, ring_mask_after.png,
> ring_mask_before.png, ring_mask.svg
>
>
> There is workaround in Any2LumRed.java with this comment:
> // All this nonsense is to work around the fact that the
> // Color convert op doesn't properly copy the Alpha from
> // src to dst.
> When processing SVG with mask in Oracle JDK 8, this workaround is the root
> cause of several issues reported here in JIRA.
> The only related issue I've found so far is
> https://bugs.openjdk.java.net/browse/JDK-8005930. Can anybody confirm the
> comment/workaround above was targeted for OpenJDK?
> When this code is commented, the result is processed correctly (Oracle JDK).
> However, I am afraid this is not a proper way how to fix it as this code
> should produce same results for various JDKs/versions. For this we need a new
> boolean variable, something like isColorConvertOpAlphaSupported - the result
> of analyzing destination's alpha (if present or not) after running the simple
> ColorConvertOp test. That workaround would be applied only if alpha is not
> supported.
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