[Libreoffice-bugs] [Bug 113714] New: Flicker when hovering over main menu with default rendering

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=113714

            Bug ID: 113714
           Summary: Flicker when hovering over main menu with default
                    rendering
           Product: LibreOffice
           Version: 5.0.0.5 release
          Hardware: All
                OS: Windows (All)
            Status: UNCONFIRMED
          Keywords: bibisected, bisected, regression
          Severity: normal
          Priority: medium
         Component: graphics stack
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: baron at caesar.elte.hu
                CC: kendy at collabora.com, quikee at gmail.com,
                    vstuart.foote at utsa.edu, xiscofauli at libreoffice.org
            Blocks: 85811, 91488, 112889

Opening this as a fresh start for the original issue in bug 105863, without the
interference of bug 112486. When checking for this issue, disregard any LO
version between 5.3.2-5.3.6 and 5.4.0-5.4.2 because of that reason.

- Switch to default rendering.
- Start Writer.
- Move mouse over main menu.

=> The menu flickers.

It's Windows-only, and possibly depends on hardware/drivers.
Occurs for me with default rendering both with an AMD RX 570 GPU and an Intel
HD Graphics 4000 IGP (in i7-3520M CPU). Does not occur with OpenGL enabled.

Reproduced with 6.0 daily build (2017-11-06_23:18:19), 5.3.0.3, 5.0.0.5 /
Windows 7.
Not reproduced with 4.4.0.3.
=> regression

Flickering has started with the comment referenced below. Adding Cc: to Tomaz
Vajngerl, please take a look.

https://cgit.freedesktop.org/libreoffice/core/commit/?id=458a827e96523ac52d021f1fd3653b5a734940c0
author          Tomaž Vajngerl <tomaz.vajngerl at collabora.co.uk> 2015-05-15
11:50:30 (GMT)
committer       Tomaž Vajngerl <tomaz.vajngerl at collabora.co.uk> 2015-05-16
12:57:16 (GMT)

"further refactor Menu to use RenderContext"


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=85811
[Bug 85811] [META] Main menu bar bugs and enhancements
https://bugs.documentfoundation.org/show_bug.cgi?id=91488
[Bug 91488] [META] RenderContext related issues
https://bugs.documentfoundation.org/show_bug.cgi?id=112889
[Bug 112889] [META] Screen flickering when hovering on items or selecting text
with default rendering
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