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https://issues.apache.org/jira/browse/XGC-134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17684736#comment-17684736
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mt commented on XGC-134:
------------------------
[~joshdm] [~ssteiner]
I think I figured it out and managed to create another image to reproduce this
(attached as fop_broken.png). I think this is caused by the image being
color=grayscale AND having sRGB metadata (which I guess doesn't make sense and
is the reason GIMP removes it).
I reproduced this by exporting the image as grayscale in GIMP and then manually
adding the sRGB Metadata to the Image with the Windows tool TweakPNG.
> Some PNGs are rendered incorrectly (Regression 2.7 -> 2.8)
> ----------------------------------------------------------
>
> Key: XGC-134
> URL: https://issues.apache.org/jira/browse/XGC-134
> Project: XMLGraphicsCommons
> Issue Type: Bug
> Components: general
> Affects Versions: 2.8
> Environment: Java 17.0.5 (Adoptium Temurin) on Windows x64.
> Reporter: mt
> Priority: Critical
> Attachments: broken.txt, fixed.txt, fop_broken.png,
> xgc_2.7_correct-1.png, xgc_2.8_wrong-1.png
>
>
> After upgrading our application from FOP 2.7 to FOP 2.8 we noticed that some
> PNG files are not rendered correctly in the PDF. While I initially thought
> this was a problem in FOP, I can reproduce this with FOP 2.7 + XGC 2.8, so I
> guess it must be an issue in XGC 2.8 .
> Unfortunately I can't share the exact PNG file because it contains the logo
> of one our customers. When I try to modify the PNG in any way, I can't
> reproduce it anymore. I also couldn't find another PNG to reproduce this with.
> Basically the PNG is rendered 3 times horizontally and a black bar appears
> below the 3 images. I attached a comparison between XGC 2.7 and XGC 2.8 .
> These are (obviously modified) screenshots of the PDF generated by FOP.
> There were hardly any changes between XGC 2.7 and 2.8. Looks like this may be
> related to XGC-132 ?
> This is with Java 17.0.5 (Adoptium Temurin) on Windows x64.
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