[Octave-bug-tracker] [bug #65968] Printing to pdf produces distorted result

[Dennis Cote]

Follow-up Comment #7, bug #65968 (group octave):

I switched to the software OpenGL and repeated my test case. Both the PDF and
SVG output files were correct (see foosoft.* files attached).

Then I checked my hardware since the reported problems seemed to be with
Nvidia and Intel integrated graphics. I have a Ryzen CPU with a Radeon GPU so
I thought those issues were unlikely. See hardware OpenGL info attached. 

I noticed my Radeon driver was old (from 2021) so I updated to the newest AMD
Radeon driver (from 2024) and repeated my test case using the system OpenGL.
See new hardware OpenGL info attached which shows the only OpenGL version
change was the "Compatibility GL ES version" increased from 3.0 to 3.1. 

With the new driver both the PDF and SVG files were correct (see foo_newhard.*
files attached). 

This seems to be a hardware driver related issue rather than a bug in Octave.



(file #56300, file #56301, file #56302, file #56303)

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Additional Item Attachment:

File name: foosoft.pdf                    Size: 8KiB
    <https://file.savannah.gnu.org/file/foosoft.pdf?file_id=56300>

File name: hardware OpenGL info.png       Size: 252KiB
    <https://file.savannah.gnu.org/file/hardware OpenGL
info.png?file_id=56301>

File name: foo_newhard.pdf                Size: 8KiB
    <https://file.savannah.gnu.org/file/foo_newhard.pdf?file_id=56302>

File name: new hardware OpenGL info.png   Size: 253KiB
    <https://file.savannah.gnu.org/file/new hardware OpenGL
info.png?file_id=56303>


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