Bug 133908 - Diagonal lines (edges of gradient transitions) in presentation mode (Skia Raster/Vulkan)
Summary: Diagonal lines (edges of gradient transitions) in presentation mode (Skia Ras...
Status: RESOLVED DUPLICATE of bug 133016
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
(earliest affected)
Hardware: All All
: medium normal
Assignee: Not Assigned
Depends on:
Blocks: Skia
  Show dependency treegraph
Reported: 2020-06-11 19:04 UTC by Telesto
Modified: 2020-06-16 07:54 UTC (History)
1 user (show)

See Also:
Crash report or crash signature:

Example file (26.60 KB, application/vnd.oasis.opendocument.presentation)
2020-06-11 19:05 UTC, Telesto

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Description Telesto 2020-06-11 19:04:52 UTC
Vertical lines in presentation mode (Skia Raster/Vulkan)

Steps to Reproduce:
1. Open the attached file
2. Press F5

Actual Results:
Vertical strips

Expected Results:
Shouldn't be so

Reproducible: Always

User Profile Reset: No

Additional Info:
Version: (x64)
Build ID: a201ab6f47c2d5a7ba4c5f998b0aa231cae82010
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win
Locale: nl-NL (nl_NL); UI: en-US
Calc: CL
Comment 1 Telesto 2020-06-11 19:05:10 UTC
Created attachment 161897 [details]
Example file
Comment 2 V Stuart Foote 2020-06-11 19:51:55 UTC
Confirmed on Windows builds

But, the lines (edges of the gradient transition) are visible with GDI rendering also. So this is not a Skia only issue.

The presentation mode is somewhat clean with 'Hardware acceleration' enabled, but the presenter's console preview pane shows the gradient edges. And with HA disabled it is fully visible on the presentation.

This is visible in 6.4
Version: (x64)
Build ID: 3d775be2011f3886db32dfd395a6a6d1ca2630ff
CPU threads: 8; OS: Windows 10.0 Build 18362; UI render: default; VCL: win; 
Locale: en-US (en_US); UI-Language: en-US
Calc: CL
Comment 3 V Stuart Foote 2020-06-11 19:53:32 UTC
It is not visible with OpenGL rendering in 6.4.4 build.
Comment 4 Luboš Luňák 2020-06-16 07:54:59 UTC

*** This bug has been marked as a duplicate of bug 133016 ***