Issue 49141 - Fat lines appear fragmented in Direct-X view
Summary: Fat lines appear fragmented in Direct-X view
Status: ACCEPTED
Alias: None
Product: Impress
Classification: Application
Component: viewing (show other issues)
Version: 680m102
Hardware: All Windows, all
: P3 Trivial (vote)
Target Milestone: ---
Assignee: AOO issues mailing list
QA Contact:
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2005-05-12 12:51 UTC by lutz.hoeger
Modified: 2013-08-07 15:21 UTC (History)
1 user (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---


Attachments
fat line fragmented in direct-x view (preso) (9.05 KB, application/vnd.sun.xml.impress)
2005-05-12 12:54 UTC, lutz.hoeger
no flags Details
screen shot of fragmented fat line in direct-x view taken on my system (10.93 KB, image/png)
2005-05-12 12:54 UTC, lutz.hoeger
no flags Details
Faint lines even without thick lines (10.22 KB, application/vnd.sun.xml.impress)
2005-05-12 13:04 UTC, thb
no flags Details

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Description lutz.hoeger 2005-05-12 12:51:32 UTC
see attached screen shot and preso; in presentation mode using direct-x there
are tiny white spaces between the polygon segments, which make the line appear
fragemented. Even without the white spaces the polygon pieces look "gestückelt"
- can't we achieve a smoother line appearance?
Comment 1 lutz.hoeger 2005-05-12 12:54:03 UTC
Created attachment 26051 [details]
fat line fragmented in direct-x view (preso)
Comment 2 lutz.hoeger 2005-05-12 12:54:49 UTC
Created attachment 26052 [details]
screen shot of fragmented fat line in direct-x view taken on my system
Comment 3 thb 2005-05-12 13:00:52 UTC
This bug has several aspects. First of all, the problem seems to be
machine/resolution/screen depth dependent: on my box, it only appears in 16 bit,
for LHO, it's on all depths, for AW and DL, it happens for _no_ case.

Then, it's certainly possible to 'tunnel' the high-level line information down
to the canvas. This would fix the problem, but leave the general one, namely,
that exactly adjacent polygons are seemingly not always rendered exactly
adjacent (see attached document).

Maybe it's even caused by round-off errors above the renderer (->cppcanvas).
Comment 4 thb 2005-05-12 13:04:19 UTC
Created attachment 26054 [details]
Faint lines even without thick lines
Comment 5 thb 2005-05-27 23:45:24 UTC
Retargeted, due to resource constraints.
Comment 6 thb 2012-07-13 20:47:36 UTC
Reset to default bug assignee.