[Libreoffice-bugs] [Bug 135258] New: Cannot export slides to PNG when Master contains a transparent object

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=135258

            Bug ID: 135258
           Summary: Cannot export slides to PNG when Master contains a
                    transparent object
           Product: LibreOffice
           Version: 6.4.5.2 release
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: minor
          Priority: medium
         Component: Impress
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: floeschie at gmail.com

Description:
I created a master slide which has a symbol shape (puzzle) with 80%
transparency in the background. When I export the presentation to PNG files,
the transparent object is not visible in the PNG file.

Steps to Reproduce:
1. Create new presentation
2. Open Master view
3. Add symbol shape (e. g. puzzle)
4. Set the area transparency to 50%
5. Close Master view
6. Select File → "Export…"
7. Set export format to "PNG"
8. In PNG options, make sure "Save transparency" is checked
9. Click "OK"

Actual Results:
Error messages:

- Image filter not found
- General input/output error

Expected Results:
Slides are exported to PNG, no error message


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
Version: 6.4.5.2
Build ID: 6.4.5.2-2.fc32
CPU threads: 4; OS: Linux 5.7; UI render: default; VCL: gtk3; 
Locale: de-DE (de_DE.UTF-8); UI-Language: en-US
Calc: threaded

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