Bug 692460 - there are some unexpected horizontal lines in whole page if changing initial color value 255 to 0
Summary: there are some unexpected horizontal lines in whole page if changing initial ...
Status: RESOLVED DUPLICATE of bug 691930
Alias: None
Product: MuPDF
Classification: Unclassified
Component: fitz (show other bugs)
Version: unspecified
Hardware: PC Windows XP
: P4 normal
Assignee: Tor Andersson
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-08-24 02:39 UTC by sethyan
Modified: 2011-08-29 19:26 UTC (History)
0 users

See Also:
Customer:
Word Size: ---

Attachments
unexpected horizontal lines in whole page (770.08 KB, application/pdf)
2011-08-24 02:39 UTC, sethyan 		Details
unexpected horizontal lines page image (35.21 KB, image/pjpeg)
2011-08-24 02:39 UTC, sethyan 		Details
miss-render (49.35 KB, image/pjpeg)
2011-08-25 02:17 UTC, sethyan 		Details
Show Obsolete (1) Add an attachment (proposed patch, testcase, etc.)

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Description sethyan 2011-08-24 02:39:14 UTC 
Created attachment 7820 [details]
unexpected horizontal lines in whole page

See attachment pdf file. when rendering page, first will clear pixmap color with function fz_clear_pixmap_with_color(app->image, 255) in pdfapp_showpage() in pdfapp.c. If initial color value is 255, it is normally, but if you change this value to 0 or less-than 255, there were some unexpected horizontal lines emerge in whole page, that is abnormally.
Comment 1 sethyan 2011-08-24 02:39:48 UTC 
Created attachment 7821 [details]
unexpected horizontal lines page image
Comment 2 sethyan 2011-08-25 02:17:49 UTC 
Created attachment 7824 [details]
miss-render
Comment 3 sethyan 2011-08-25 02:19:59 UTC 
Sorry for the careless wrong attachment in comment 2, ignore that please.
Comment 4 Robin Watts 2011-08-25 12:56:55 UTC 
Comment on attachment 7824 [details]
miss-render

Marking unwanted attachment as obselete.
Comment 5 Tor Andersson 2011-08-29 19:26:07 UTC 
The horizontal lines are the result of anti-aliasing paths. The yellow background is drawn as many yellow rectangles. You can also see horizontal lines when the background is filled with 255.

*** This bug has been marked as a duplicate of bug 691930 ***