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[Octave-bug-tracker] [bug #51442] graphics_toolkit qt does not work with

From: Markus Mützel
Subject: [Octave-bug-tracker] [bug #51442] graphics_toolkit qt does not work with Qt 5 in Xwayland and Intel mesa driver
Date: Sat, 14 Oct 2017 11:16:06 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0

Follow-up Comment #26, bug #51442 (project octave):

Plotting with Qt5 didn't work for me either (unless I set
LIBGL_ALWAYS_SOFTWARE=1). That has improved with a recent tip (hg id
8e034cb195f1). That is, the figures no longer appear black even without that

However, the axes grids are rendered upside down on screen. When printing
"demo light 1", I see the following:

>> print (1, "demo_light_1_qt5_print.png")
context mismatch in svga_sampler_view_destroy
context mismatch in svga_sampler_view_destroy

Nothing upside down here.

Both on-screen and print results are attached.

With "LIBGL_ALWAYS_SOFTWARE=1 ./run-octave", the figure renders correctly.

(file #42144, file #42145)

Additional Item Attachment:

File name: demo_light_1_qt5_onscreen.png  Size:58 KB
File name: demo_light_1_qt5_print.png     Size:91 KB


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