Bug 692609

Summary: Halftoned fill color rectangle has underlying problem.
Product: Ghostscript Reporter: Robin Watts <robin.watts>
Component: ColorAssignee: Robin Watts <robin.watts>
Status: CONFIRMED ---    
Severity: normal    
Priority: P4    
Version: master   
Hardware: PC   
OS: Windows XP   
Customer: Word Size: ---
Attachments: 0001-Latest-unicode-handling.patch

Description Robin Watts 2011-10-17 10:28:58 UTC 
In investigating the pamcmyk4 vs plank differences, I came across problems when running the following file at 300dpi, both banded and unbanded with both plank and pamcymk4.

 tests_private/pcl/pcl5cats/Subset/PWEP6SC1.BIN

If you examine gx_dc_ht_colored_fill_rectangle (in gxcht.c) you'll see that it falls into 2 cases; the first is an 'optimisation' case for the second.

As such disabling the first case should cause no differences in the output at all - just a slowdown. Unfortunately, testing shows this not to be true.

This isn't a plank vs pamcmyk4 bug, so I'm trying to avoid burning more time on it now - but I am raising this bug so the problem isn't forgotten.
Comment 1 Robin Watts 2013-01-18 12:50:45 UTC 
Created attachment 9230 [details]
0001-Latest-unicode-handling.patch

This fixes all Sags comments, except for the 'a)' section of the environment variables, I think.
Comment 2 Robin Watts 2013-01-18 12:52:09 UTC 
Comment on attachment 9230 [details]
0001-Latest-unicode-handling.patch

Wrong bug, sorry!