https://bugs.documentfoundation.org/show_bug.cgi?id=156687
Bug ID: 156687
Summary: PNG with alpha, flip and set transparency, shows
original image shadow during present
Product: LibreOffice
Version: 7.5.4.2 release
Hardware: x86-64 (AMD64)
OS: Windows (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Impress
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: dllee...@gmail.com
Description:
PNG with alpha, flip and set transparency, shows normal during editing, but
shows the original image shadow during present.
If only flip without set transparency, the result is OK. Both flip and set
transparency will cause the problem.
If the png image flips twice, the result is OK.
Steps to Reproduce:
1. insert a png image with alpha channel
2. copy it and paste a new instance
3. set the new instance to transparency, like 50%, and flip it H or V.
4. present F5 to present this slide
(or open the sample odp file and press F5)
Actual Results:
The flip + set transparency image shows the extra shadow, its shape is the
original image.
Expected Results:
The flip + set transparency image should show normal during present, just like
during editing.
Reproducible: Always
User Profile Reset: Yes
Additional Info:
Version: 7.5.4.2 (x86) / LibreOffice Community
Build ID: 36ccfdc35048b057fd9854c757a8b67ec53977b6
CPU threads: 8; OS: Windows 10.0 Build 22621; UI render: Skia/Raster; VCL: win
Locale: zh-TW (zh_TW); UI: zh-TW
Calc: CL threaded
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