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https://issues.apache.org/jira/browse/PDFBOX-4245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16552140#comment-16552140
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Petr Slaby commented on PDFBOX-4245:
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[~tilman]: Could you please link or attach the files which had the regression
so that we could have a look? We cannot use PDFBox 2.0 in our product until
this issue is resolved.
> wrong rendering of the transparency group at the specific position on a page
> ----------------------------------------------------------------------------
>
> Key: PDFBOX-4245
> URL: https://issues.apache.org/jira/browse/PDFBOX-4245
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.10
> Reporter: Jiri Kunhart
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: patch
> Attachments: gs-bugzilla690022-reduced-rotations-cropbox.pdf,
> gs-bugzilla690022-reduced-rotations.pdf, gs-bugzilla690022.pdf,
> pdfbox-2.0.10-SNAPSHOT_transparency_group_all.patch,
> pdfbox-2.0.10-SNAPSHOT_transparency_group_resources.zip,
> pdfbox-2.0.10-SNAPSHOT_transparency_group_sources.patch
>
>
> The rendering of the transparency groups works only if the whole page is
> rendered. If you try to render only a part of the page where is a
> transparency group placed, you will get only the white image or an image with
> shifted pixels representing applied soft mask. The simple fix is attached in
> the patch, including the test and the resources used for testing.
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