Bug 119517 - Rotating an images makes it very pixelated on presentation mode
Summary: Rotating an images makes it very pixelated on presentation mode
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
(earliest affected)
4.2 all versions
Hardware: All Linux (All)
: medium normal
Assignee: Not Assigned
Keywords: bibisected, bisected, regression
Depends on:
Blocks: Impress-Images
  Show dependency treegraph
Reported: 2018-08-26 19:03 UTC by Diogo G. Sousa
Modified: 2019-01-08 19:07 UTC (History)
3 users (show)

See Also:
Crash report or crash signature:

presentation (605.16 KB, application/vnd.oasis.opendocument.presentation)
2018-08-26 19:03 UTC, Diogo G. Sousa
bug image (489.88 KB, image/png)
2018-08-26 19:03 UTC, Diogo G. Sousa

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Description Diogo G. Sousa 2018-08-26 19:03:01 UTC
Rotating an images makes it very pixelated on presentation mode.

See attached example.  The left image was rotated 1 degree.

This is independent of having hardware acceleration on or off.

Steps to Reproduce:
1. Open presentation attached.
2. Enter presentation mode.

Actual Results:
Rotated image is pixelated.

Expected Results:
Preserve image quality.

Reproducible: Always

User Profile Reset: No

Additional Info:
Comment 1 Diogo G. Sousa 2018-08-26 19:03:25 UTC
Created attachment 144465 [details]
Comment 2 Diogo G. Sousa 2018-08-26 19:03:50 UTC
Created attachment 144466 [details]
bug image
Comment 3 Xisco Faulí 2018-08-27 10:00:13 UTC
Regression introduced by:


author	Armin Le Grand <alg@apache.org>	2013-01-14 13:02:48 (GMT)
committer	Caolán McNamara <caolanm@redhat.com>	2013-06-13 14:46:44 (GMT)
commit	45a8eaf9c55f2686f69118641d8a8992a86dfe31 (patch)
tree	c8dc047f2c9e63cb44d44288c87c27763e958f7c
parent	b0f10dd3262cd16b8a6c1bb4fbc3386330acc685 (diff)
Resolves: #i121534# Adapted rotated bitmap paints to use own transformer...
due to bad quality of GraphicManager paints

(cherry picked from commit f4887567cc71dca520d57cb6ff2b40eb49142cda)


Bisected with bibisect-42max

Adding Cc: to Armin Le Grand
Comment 4 Xisco Faulí 2018-08-27 10:00:32 UTC
Not reproduced in

Id. de compilación: efb621ed25068d70781dc026f7e9c5187a4decd1
Subprocs. CPU: 1; SO: Windows 6.1; Repres. IU: predet.; 
Configuración regional: es-ES (es_ES); Calc: group threaded