Bug 691821

Summary: Some pages do not antialias text
Product: Ghostscript Reporter: Joshua Smith <jesmith>
Component: TextAssignee: Ken Sharp <ken.sharp>
Status: RESOLVED DUPLICATE    
Severity: normal    
Priority: P4    
Version: master   
Hardware: All   
OS: All   
Customer: Word Size: ---
Attachments: Two-page PDF. The first aa's, the second does not.

Description Joshua Smith 2010-12-07 20:31:41 UTC
Created attachment 7009 [details]
Two-page PDF.  The first aa's, the second does not.

The attached PDF contains two pages.  When rendered with this command line:

gs -q -dQUIET -dBATCH -dNOPROMPT -dNOPAUSE -dNOPSICC -dDisableFAPI -sDEVICE=jpeg -dJPEGQ=100 -r150x150 -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -dDOINTERPOLATE -dMaxBitmap=512000000 -sOutputFile=%d-aa.jpg aa.pdf

The first page text renders antialiased, but the second page text is aliased.

If I pass -dTextAlphaBits=1 then both pages are aliased.  So it appears that something is causing gs to turn off antialiasing of the second page.
Comment 1 Ray Johnston 2010-12-07 21:08:16 UTC
I looked and the second page uses transparency. We already have an open bug
for AA and transparency.

Page 1 MediaBox: [ 612 792 ]
Page 2 MediaBox: [ 612 792 ]     Page uses transparency features

*** This bug has been marked as a duplicate of bug 689044 ***