Bug 17919

Summary: Improper rendering of text with transparent background.
Product: poppler Reporter: Hubert Figuiere <hub>
Component: cairo backendAssignee: poppler-bugs <poppler-bugs>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: Other   
OS: All   
URL: https://secure.paizo.com/download/pathfinder/PZO9000-2E.zip
Whiteboard:
i915 platform: i915 features:
Attachments: screenshot

Description Hubert Figuiere 2008-10-05 14:20:29 UTC 
Created attachment 19394 [details]
screenshot

Download and decompress the document:

https://secure.paizo.com/download/pathfinder/PZO9000-2E.zip

Open it in Evince.

The first page has the word "Pathfinder" on a white rectangle while it should be "transparent" to show the existing background.

xpdf does not have the problem. Attached a screen shot: top is Evince/poppler cairo, bottom is xpdf.

I have poppler:

libpoppler3-0.8.7
Comment 1 Hubert Figuiere 2008-10-05 14:23:09 UTC 
also the PDF thumbnailer exhibit the problem.
Comment 2 Albert Astals Cid 2008-10-05 14:34:53 UTC 
Confirmed to be a cairo backend only problem
Comment 3 Carlos Garcia Campos 2009-06-06 07:28:43 UTC 
Looking at the commands executed I see:

gfx state dict: << /OPM 1 /BM /Normal /CA 1 /OP false /SMask /None /ca 1 /AIS false /op false /Type /ExtGState /SA true >>

/BM is Blend Mode which is not implemented in the cairo backend.
Comment 4 Carlos Garcia Campos 2009-07-31 08:45:34 UTC 
Fixed in git master (requires cairo from git master to work)

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