[Libreoffice-bugs] [Bug 40534] slide tearing or not shown in LARGE screens (high resolution) with hardware acceleration enabled

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=40534

--- Comment #80 from craig at arno.com <craig at arno.com> ---
Microsoft Surfacebook Pro
Processor Intel Core i7-6600U CPU @ 2.60GHz 2.81 GHz
Installed RAM 16.0GB
Windows 10 Pro x64 v1803
OS build 17134.523

LibreOffice
Version: 6.1.3.2 (x64)
Build ID: 86daf60bf00efa86ad547e59e09d6bb77c699acb
CPU threads: 4; OS: Windows 10.0; UI render: default; 
Locale: en-US (en_US); Calc: group threaded

Adding
 LO 6_1_3_2-Impress HW acceleration ON.png   (Corrupted screens)
 LO 6_1_3_2-Impress HW acceleration OFF.png  (Not Corrupted)

HW acceleration off does not exhibit corruption but takes 10+ seconds/slide to
paint screen (not acceptable for a real presentation).  MS Power Point
paints/builds "next" screen in a non-visible background buffer so when the next
slide is requested transition is nearly instant as a result of a HW copy of
memory buffer to the screen buffer.  LibreOffice Impress needs something close
to this level of performance.  LibreOffice Impress otherwise is an excellent
and impressive tool, it just can't perform well enough for real presentations
until this is fixed.

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