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https://issues.apache.org/jira/browse/PDFBOX-2111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr resolved PDFBOX-2111.
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Resolution: Fixed
Fixed in rev 1599647 for the trunk and rev 1599642 for the 1.8 branch.
> Cast error in Gouraud shadings
> ------------------------------
>
> Key: PDFBOX-2111
> URL: https://issues.apache.org/jira/browse/PDFBOX-2111
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 1.8.5, 1.8.6, 2.0.0
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Labels: shading, shadingpattern
> Fix For: 1.8.6, 2.0.0
>
>
> There's a bug in Type4ShadingContext and Type5ShadingContext:
> {code}
> long maxSrcCoord = (int) Math.pow(2, bitsPerCoordinate) - 1;
> long maxSrcColor = (int) Math.pow(2, bitsPerColorComponent) - 1;
> {code}
> should be
> {code}
> long maxSrcCoord = (long) (Math.pow(2, bitsPerCoordinate) - 1);
> long maxSrcColor = (long) (Math.pow(2, bitsPerColorComponent) - 1);
> {code}
> The problem is that maxSrcCoord is 7FFFFFFF instead of FFFFFFFF when
> bitsPerCoordinate is 32.
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