https://bugs.freedesktop.org/show_bug.cgi?id=99849
Bug ID: 99849
Summary: Dashed lines (drawn via GLAMOR) are not rendered
correctly
Product: Mesa
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Mesa core
Assignee: mesa-dev@lists.freedesktop.org
Reporter: msta...@suse.de
QA Contact: mesa-dev@lists.freedesktop.org
This is a continuation of fdo#99708.
Basically, since X server commit d18f5801, dashed lines with zero width are
accelerated through GLAMOR, and thus through OpenGL.
When using Mesa's software renderer, this is drawn as one continuous line.
When using the Intel backend, only the first segment of the dashed line is
drawn.
Please see the original bug report against GLAMOR for screenshots and example
code to trigger this condition:
https://bugs.freedesktop.org/show_bug.cgi?id=99708
This seems to be a bug in the OpenGL rendering, according to this thread:
https://lists.x.org/archives/xorg-devel/2017-February/052689.html
The fact that different backends behave differently makes me think so, too.
Any help would be greatly appreciated!
For reference, the bug that originated this analysis was:
https://bugzilla.opensuse.org/show_bug.cgi?id=1021803
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