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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Dashed lines (drawn via GLAMOR) are not rendered correctly"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99849">99849</a>
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<th>Summary</th>
<td>Dashed lines (drawn via GLAMOR) are not rendered correctly
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Mesa core
</td>
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>mstaudt@suse.de
</td>
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<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>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:
<a class="bz_bug_link
bz_status_NEW "
title="NEW - glamor: LineOnOffDash drawn as one whole line"
href="show_bug.cgi?id=99708">https://bugs.freedesktop.org/show_bug.cgi?id=99708</a>
This seems to be a bug in the OpenGL rendering, according to this thread:
<a href="https://lists.x.org/archives/xorg-devel/2017-February/052689.html">https://lists.x.org/archives/xorg-devel/2017-February/052689.html</a>
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:
<a href="https://bugzilla.opensuse.org/show_bug.cgi?id=1021803">https://bugzilla.opensuse.org/show_bug.cgi?id=1021803</a></pre>
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