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Tilman Hausherr edited comment on PDFBOX-5134 at 3/20/21, 1:05 PM: ------------------------------------------------------------------- I tested your changes and had many invisible differences, and two slightly visible (gs-bugzilla687307-2.pdf and PDFBOX-4217-shade_via_1.3_006.pdf). I got rid of all of them except one (gs-bugzilla689095.pdf, differences are invisible) with this code in the two context classes: {code:java} if (bounds != null) { bounds.add(new Point((int) Math.floor(bounds.getMinX())-1, (int) Math.floor(bounds.getMinY())-1)); bounds.add(new Point((int) Math.ceil(bounds.getMaxX())+1, (int) Math.ceil(bounds.getMaxY())+1)); } {code} Another problem was that the rendering tests sometimes froze for a minute, then went on. Apparently I got rid of that by calling {{dispose()}} on the context after it's done. was (Author: tilman): I tested your changes and had many invisible differences, and two slightly visible (gs-bugzilla687307-2.pdf and PDFBOX-4217-shade_via_1.3_006.pdf). I got rid of most of them with this code in the two context classes: {code:java} if (bounds != null) { bounds.add(new Point((int) Math.floor(bounds.getMinX())-1, (int) Math.floor(bounds.getMinY())-1)); bounds.add(new Point((int) Math.ceil(bounds.getMaxX())+1, (int) Math.ceil(bounds.getMaxY())+1)); } {code} Another problem was that the rendering tests sometimes froze for a minute, then went on. Apparently I got rid of that by calling {{dispose()}} on the context after it's done. > 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 > 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. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org For additional commands, e-mail: dev-h...@pdfbox.apache.org