Bug 691866

Summary: regression: subtle logic change in fz_paintlinear
Product: MuPDF Reporter: zeniko
Component: fitzAssignee: Tor Andersson <tor.andersson>
Status: RESOLVED FIXED    
Severity: normal CC: sebastian.rasmussen
Priority: P4    
Version: unspecified   
Hardware: PC   
OS: Windows 7   
URL: http://code.google.com/p/sumatrapdf/issues/detail?id=1157
Customer: Word Size: ---
Bug Depends on: 691855    
Bug Blocks:    
Attachments: micron.pdf.bz2

Description zeniko 2011-01-05 12:46:04 UTC 
Page 2 of http://www.micron.com/document_download/?documentId=5423 renders wide gray bars since bug 691855 has been fixed.
Comment 1 Alex Cherepanov 2011-01-05 15:22:34 UTC 
Created attachment 7087 [details]
micron.pdf.bz2

Local copy of the sample file. The file works fine on gs.
Comment 2 zeniko 2011-01-05 16:12:26 UTC 
Turns out that this doesn't have anything to do with radial shades at all. Rather the logic in fz_paintlinear has been subtly changed, both by fz_paintquad not always passing the same three vertices to fz_painttriangle as fz_paintlinear originally did and by changing the additions in the shade->extend[1] case to subtractions.