[jira] [Commented] (PDFBOX-2117) AxialShadingContext is slow

["Shaola Ren (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-2117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14081772#comment-14081772 ] 

Shaola Ren commented on PDFBOX-2117:
------------------------------------

That's fine, it's just a different way to deal with the domain values, and hope everything is consistent with each other now.

> AxialShadingContext is slow
> ---------------------------
>
>                 Key: PDFBOX-2117
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2117
>             Project: PDFBox
>          Issue Type: Sub-task
>          Components: Rendering
>    Affects Versions: 1.8.6, 1.8.7, 2.0.0
>            Reporter: Petr Slaby
>            Assignee: Shaola Ren
>              Labels: shading, shadingpattern
>             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, PDFBOX-2117-068519.pdf, PDFBOX-2117-068519.pdf-2-bad.png, PDFBOX-2117-068519.pdf-2-good.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).
>   



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