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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - glScissor doesn't work with Mesa 9.2 on Intel GPUs"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72586">72586</a>
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</tr>
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<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>glScissor doesn't work with Mesa 9.2 on Intel GPUs
</td>
</tr>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>bk@f-m.fm
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>9.2
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/DRI/i965
</td>
</tr>
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<th>Product</th>
<td>Mesa
</td>
</tr></table>
<p>
<div>
<pre>glScissor stopped working correctly in Mesa 9.2 (it only affects Intel driver).
It seems that once scissor gets set it can't be disabled, nor changed.
It worked on:
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile
OpenGL version string: 3.0 Mesa 9.1.7
OpenGL shading language version string: 1.30
Stopped working with:
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile
OpenGL core profile version string: 3.1 (Core Profile) Mesa 9.2.1
OpenGL core profile shading language version string: 1.40
OpenGL core profile context flags: (none)
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 9.2.1
OpenGL shading language version string: 1.30
And doesn't work on:
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
OpenGL version string: 3.0 Mesa 10.0.0-devel (git-ff337bc)
OpenGL shading language version string: 1.30
Here is some more info about the issue:
<a href="https://github.com/bkaradzic/bgfx/issues/48">https://github.com/bkaradzic/bgfx/issues/48</a>
Apitrace was created on SandyBridge, and it replays correctly with the same
Mesa 9.2 Nouveau and NVIDIA 319.32 propriatery drivers. Also I tested my code
on OpenGL on Windows and OSX (let me know if you need more info about these
drivers).
I don't have code sample of this problem but you could glretrace attached
trace, to see the issue. Also github issue mentioned above has screenshots.</pre>
</div>
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