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https://issues.apache.org/jira/browse/PDFBOX-2117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14057880#comment-14057880
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Tilman Hausherr commented on PDFBOX-2117:
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The images are not identical, but they look fine. If I understand correctly,
you calculated values along a line. So the result might not be the same because
the coordinates of the axis don't start and end exactly on a pixel - correct? I
didn't check all the diffs (will do later) but it is probably all fine.
It is faster for me (about 50 - 100%) but in total, my test suite is maybe just
1 minute faster, this might be because I don't have many axial renderings in it.
[~pslabycz] could you please try [her
change|https://bitbucket.org/xinshu/pdfbox/raw/61564cd86f540c92782ab6b9f9885be02cbcb9b7/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/graphics/shading/AxialShadingContext.java]
and tell what times you get with the files you tested on June 5th?
[~xinshu] sorry, I didn't include PDFunction last time. I'll test that next.
> AxialShadingContext is slow
> ---------------------------
>
> Key: PDFBOX-2117
> URL: https://issues.apache.org/jira/browse/PDFBOX-2117
> Project: PDFBox
> Issue Type: Sub-task
> Components: Rendering
> Reporter: Petr Slaby
> Attachments: 000001_MTEXT_CS6.pdf, AxialShading.patch,
> AxialShading1.patch, AxialShadingContext.java.getrgbimage,
> Shading2Function2.pdf, Shading2Function2.ps, Shading2Function2text.pdf,
> asy-shade.pdf, color_gradient.pdf, shading_pattern.pdf
>
>
> AxialShadingContext#getRaster() is on top of profiler hot spots in documents
> that use an axial shading. Inside it, the slowest part is calling
> PDColorSpaceRGB#toRGB() and PDFunctionType3#eval() (in this order).
>
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