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Jani Pehkonen commented on PDFBOX-3000: --------------------------------------- {quote}It is even weirder. In the blend demo file by Boris Aronshtam one can see that blue on orange in blend mode "ColorDodge" produces an orange result with Adobe and a pink result with PDFBox.{quote} The new PDF 2.0 standard provides revised equations for the blend modes ColorDodge and ColorBurn. These should produce correct colors: {code:java} public static final SeparableBlendMode COLOR_DODGE = new SeparableBlendMode() { @Override public float blendChannel(float srcValue, float dstValue) { if (dstValue == 0) { return 0; } if (dstValue >= 1 - srcValue) { return 1; } return dstValue / (1 - srcValue); } }; {code} {code:java} public static final SeparableBlendMode COLOR_BURN = new SeparableBlendMode() { @Override public float blendChannel(float srcValue, float dstValue) { if (dstValue == 1) { return 1; } if (1 - dstValue >= srcValue) { return 0; } return 1 - (1 - dstValue) / srcValue; } }; {code} > Transparency Group issues > ------------------------- > > Key: PDFBOX-3000 > URL: https://issues.apache.org/jira/browse/PDFBOX-3000 > Project: PDFBox > Issue Type: Bug > Components: Rendering > Affects Versions: 2.0.0 > Reporter: John Hewson > Priority: Major > Labels: Transparency > Fix For: 3.0.0 PDFBox > > Attachments: 007087-payment-due-p58_reduced2.pdf, BlendModes-rgb.pdf, > PDFBOX-1697-reduced-rotations.pdf, PDFBOX-2182_mod.pdf, PDFBOX-3400-RGB.pdf, > PDFBOX-3494_reduced.pdf, PDFBOX-3494_reduced_cropX.pdf, PDFBOX-3564-Mask.pdf, > PDFBox3359PanelTestEnhanced.java, PDFJS-2845-p1.pdf, > PDFJS-5526-p13_reduced1.pdf, PDFJS-5526-p13_reduced2.pdf, > PDFJS-5526-p13_reduced3-nogroup.pdf, PDFJS-5811-2-p3_reduced.pdf, > PDFJS-5811-2-p3_reduced4.pdf, PDFJS-5811-2-p4_reduced-rotations.pdf, > PDFJS-5811-2.pdf, PDFJS-5853_reduced.pdf, PDFJS-6967-p8.pdf, > PDFJS-6967_reduced_outside_softmask.pdf, PDFJS-8136-p1.pdf, > PDFJS-8136-p1_reduced.pdf, SoftMask-Clipped.pdf, SoftMask.pdf, > blendmodes.pdf, circle-simple.pdf, ds-firewall-enterprise-p1_reduced.pdf, > gs-bugzilla689309-reduced-bc0.pdf, gs-bugzilla689309-reduced-bc1.pdf, > gs-bugzilla689309-reduced.pdf, gs-bugzilla689931_reduced-Multiply.pdf, > gs-bugzilla689931_reduced-Screen.pdf, > gs-bugzilla689931_reduced-ScreenBlendPageBackground.pdf, > gs-bugzilla690022-reduced-rotations-cropbox.pdf, > gs-bugzilla690022-reduced-rotations.pdf, gs-bugzilla690022_reduced.pdf, > gs-bugzilla691157.pdf, gs-bugzilla691157_mod_unc.pdf, > gs-bugzilla691157_mod_unc.png, gs-bugzilla691348.pdf, > gs-bugzilla691650-2.pdf, gs-bugzilla692217_reduced.pdf, > gs-bugzilla693134-giant-pattern-reduced.pdf, gs-bugzilla693322_reduced.pdf, > gs-bugzilla694556-3.pdf, gs-bugzilla695354.pdf, > gs-bugzilla695582-transparency-fill-stroke.pdf, > gs-bugzilla695582-transparency-fill-stroke.pdf-1.png, pop-bugzilla40164.pdf, > samsung_galaxy_s_4_um-p1_reduced.pdf, snowman-nose-gradient-rgb.pdf, > snowman-nose-gradient-rgb_reduced-0.6-bad2.pdf, > snowman-nose-gradient-rgb_reduced-0.7-good2.pdf, > snowman-nose-gradient-screenshot-comparison-11.12.2016.jpg, > snowman-nose-gradient.pdf, snowmen-opacity-clipping-masks-2.0.3.png, > snowmen-opacity-clipping-masks-2.1-SNAPSHOT-10.12.2016.png, > snowmen-opacity-clipping-masks-2.1.0-SNAPSHOT-2016-12-07.png, > snowmen-opacity-clipping-masks-adobe-illustrator.png, > snowmen-opacity-clipping-masks.pdf, softmask-rewrite-alt1.patch, > softmask-rewrite.patch > > > This is a follow-up issue for transparency group issues from PDFBOX-2423. > More details to come. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org For additional commands, e-mail: dev-h...@pdfbox.apache.org