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https://issues.apache.org/jira/browse/PDFBOX-2117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14082011#comment-14082011
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Tilman Hausherr commented on PDFBOX-2117:
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But t = t1 is exactly what you get with t = t0 + (t1 - t0) ¥ x¢ when x¢ = 1.
(Btw I wonder if Adobe will correct the wrong glyphs in the 2.0 PDF spec!)
> 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-ShadingType3.pdf,
> PDFBOX-2117-068519.pdf, PDFBOX-2117-068519.pdf-2-bad.png,
> PDFBOX-2117-068519.pdf-2-good.png, Shading2Function2.pdf,
> Shading2Function2.ps, Shading2Function2domain3.pdf,
> Shading2Function2text.pdf, asy-shade.pdf,
> bad_pdfbox-2117-068519-shadingtype3.pdf-1.png, color_gradient.pdf,
> good_pdfbox-2117-068519-shadingtype3.pdf-1.png, 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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