[
https://issues.apache.org/jira/browse/PDFBOX-2117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14063436#comment-14063436
]
Shaola Ren commented on PDFBOX-2117:
------------------------------------
Thanks. I noticed you mentioned diagonal shading in a previous comment, but not
too sure what the special part of it. For this axial shading, the axial line
can be in any direction, the method doesn't depend on a specific direction; the
diagonal direction is only one case of it.
> 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
> Assignee: Shaola Ren
> Fix For: 2.0.0
>
> Attachments: 000001_MTEXT_CS6.pdf, AxialShading.patch,
> AxialShading1.patch, AxialShadingContext.java.getrgbimage,
> GWG061_Shading_x1a.pdf, GWG061_Shading_x1a.pdf-1.png,
> GWG061_Shading_x1a.pdf-1.png-diff.png, 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).
>
--
This message was sent by Atlassian JIRA
(v6.2#6252)
