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Tilman Hausherr commented on PDFBOX-2117: ----------------------------------------- The problem was that the intermediate variable calculated has a "valid" range of 0..1, i.e. the value is independent of the /Domain. So the special handling for values outside of the range must work with 0 and 1 and not with the /Domain, because of that we got input values higher than the array. See https://svn.apache.org/r1614946 . Your last change was correct, but only if I would also insert another line that was deleted in optimization. However after adding it and deleting everything double in the formula, at the end I got exactly the code that you had before this week. In other words - I did NOT take your 00a0d9a commit. > 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). > -- This message was sent by Atlassian JIRA (v6.2#6252)