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Posted to dev@pdfbox.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2021/04/02 07:09:00 UTC

[jira] [Commented] (PDFBOX-5134) Very slow rendering on PageDrawer.shadingFill

    [ https://issues.apache.org/jira/browse/PDFBOX-5134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17313646#comment-17313646 ] 

ASF subversion and git services commented on PDFBOX-5134:
---------------------------------------------------------

Commit 1888288 from Tilman Hausherr in branch 'pdfbox/branches/2.0'
[ https://svn.apache.org/r1888288 ]

PDFBOX-5134: calculating the bounding boxes of the triangles reduces shading rendering times if no bounding box is preset, as suggested by Oliver Schmidtmer; Closes #109

> Very slow rendering on PageDrawer.shadingFill
> ---------------------------------------------
>
>                 Key: PDFBOX-5134
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-5134
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Rendering
>    Affects Versions: 2.0.22, 2.0.23
>            Reporter: Oliver Schmidtmer
>            Priority: Major
>              Labels: optimization, shading
>             Fix For: 2.0.24, 3.0.0 PDFBox
>
>         Attachments: PDFBOX-4217-shade_via_1.3_006.pdf, PDFBOX-4217-shade_via_1.3_006.pdf-1.png, PDFBOX-4217-shade_via_1.3_006.pdf-1.png-diff.png, Plan zum Testen.pdf, gs-bugzilla687307-2.pdf, gs-bugzilla687307-2.pdf-1.png, gs-bugzilla687307-2.pdf-1.png-diff.png, image-2021-03-17-20-16-49-221.png
>
>
> The PDF contains many effectively very small shadings, the light cones. As the gradient painting for each light cone is applied on the whole image, rendering is very slow: 29 of 33 seconds are spent in shadingFill.



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