Oliver Schmidtmer created PDFBOX-5443:
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Summary: Clipping issues in TransparencyGroup
Key: PDFBOX-5443
URL: https://issues.apache.org/jira/browse/PDFBOX-5443
Project: PDFBox
Issue Type: Bug
Reporter: Oliver Schmidtmer
Attachments: VarianteB - Demo.pdf, test-output-1.patch
The attached PDFs renders slow due to clipping issues when rendering
TransparencyGroups.
There are many TransparencyGroups, which only draw on a small area defined in a
path.
Unfortunately, for some, even mostly identical TransparencyGroups, the clipping
area is calculated to span the whole image. I've added a patchfile for some
test output:
{code:java}
path bounds: java.awt.Rectangle[x=3185,y=22,width=34,height=71]
drawing 0ms clip bounds: java.awt.Rectangle[x=0,y=-1,width=34,height=60]
path bounds: java.awt.Rectangle[x=3082,y=45,width=105,height=48]
drawing 127ms clip bounds: java.awt.Rectangle[x=0,y=0,width=3215,height=762]
path bounds: java.awt.Rectangle[x=3082,y=-25,width=34,height=71]
drawing 0ms clip bounds: java.awt.Rectangle[x=0,y=0,width=34,height=12]
path bounds: java.awt.Rectangle[x=3185,y=92,width=155,height=71]
drawing 0ms clip bounds: java.awt.Rectangle[x=0,y=0,width=87,height=71]
path bounds: java.awt.Rectangle[x=3185,y=22,width=34,height=71]
drawing 0ms clip bounds: java.awt.Rectangle[x=0,y=0,width=34,height=59]
path bounds: java.awt.Rectangle[x=2155,y=793,width=29,height=11]
drawing 0ms clip bounds: java.awt.Rectangle[x=0,y=0,width=29,height=3]
path bounds: java.awt.Rectangle[x=2146,y=793,width=10,height=20]
drawing 0ms clip bounds: java.awt.Rectangle[x=0,y=0,width=10,height=3]
path bounds: java.awt.Rectangle[x=1809,y=659,width=3,height=7]
path bounds: java.awt.Rectangle[x=1777,y=644,width=33,height=22]
path bounds: java.awt.Rectangle[x=1686,y=602,width=93,height=43]
path bounds: java.awt.Rectangle[x=1665,y=593,width=22,height=11]
path bounds: java.awt.Rectangle[x=1665,y=580,width=7,height=14]
path bounds: java.awt.Rectangle[x=1671,y=580,width=22,height=11]
path bounds: java.awt.Rectangle[x=1692,y=589,width=33,height=16]
path bounds: java.awt.Rectangle[x=1723,y=604,width=38,height=12]
path bounds: java.awt.Rectangle[x=1757,y=614,width=4,height=7]
path bounds: java.awt.Rectangle[x=1757,y=619,width=261,height=120]
path bounds: java.awt.Rectangle[x=2017,y=737,width=86,height=40]
path bounds: java.awt.Rectangle[x=2101,y=775,width=55,height=19]
drawing 126ms clip bounds: java.awt.Rectangle[x=0,y=0,width=3215,height=762]
path bounds: java.awt.Rectangle[x=2146,y=793,width=10,height=20]
drawing 0ms clip bounds: java.awt.Rectangle[x=0,y=0,width=10,height=3]
path bounds: java.awt.Rectangle[x=1811,y=659,width=336,height=154]
drawing 3ms clip bounds: java.awt.Rectangle[x=0,y=0,width=336,height=137]
path bounds: java.awt.Rectangle[x=388,y=356,width=893,height=2]
path bounds: java.awt.Rectangle[x=1280,y=356,width=62,height=29]
path bounds: java.awt.Rectangle[x=1326,y=383,width=16,height=3]
path bounds: java.awt.Rectangle[x=1306,y=384,width=21,height=7]
path bounds: java.awt.Rectangle[x=1135,y=389,width=172,height=12]
path bounds: java.awt.Rectangle[x=1030,y=390,width=106,height=11]
drawing 128ms clip bounds:
java.awt.Rectangle[x=0,y=0,width=3215,height=762]{code}
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