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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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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 --- - r600g: graphics artifacts with geometry shaders"
href="https://bugs.freedesktop.org/show_bug.cgi?id=74718">74718</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>airlied@freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>r600g: graphics artifacts with geometry shaders
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>edwin+mesa@etorok.net
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/DRI/R600
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=93670" name="attach_93670" title="geometry.trace">attachment 93670</a> <a href="attachment.cgi?id=93670&action=edit" title="geometry.trace">[details]</a></span>
geometry.trace
This application uses a geometry shader, and runs without crashing, but there
are graphics artifacts, see geometry.0000001176.png and
geometry.0000001644.png:
Source code for the application can be found here:
<a href="https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f1931d84/Tut%2013%20Impostors/GeomImpostor.cpp?at=default">https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f1931d84/Tut%2013%20Impostors/GeomImpostor.cpp?at=default</a>
<a href="https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f1931d84/Tut%2013%20Impostors/data/GeomImpostor.frag?at=default">https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f1931d84/Tut%2013%20Impostors/data/GeomImpostor.frag?at=default</a>
<a href="https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f1931d84/Tut%2013%20Impostors/data/GeomImpostor.geom?at=default">https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f1931d84/Tut%2013%20Impostors/data/GeomImpostor.geom?at=default</a>
<a href="https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f1931d84/Tut%2013%20Impostors/data/GeomImpostor.vert?at=default">https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f1931d84/Tut%2013%20Impostors/data/GeomImpostor.vert?at=default</a>
It doesn't work exactly as is with the upstream source code, due to mismatching
layouts between vert/geom/frag shader, but adding this to all shaders makes it
run:
layout(std140) uniform;
Let me know if a tarball with a working source code would help debugging or if
the apitrace suffices.
I did an apitrace, and rerun it using llvmpipe forced to 3.3, and there are no
artifacts there, see geometry.0000001176.good.png:
$ MESA_GLSL_VERSION_OVERRIDE=330 MESA_GL_VERSION_OVERRIDE=3.3
LIBGL_ALWAYS_SOFTWARE=1 glretrace ./geometry.trace
Kernel is 3.14.0-rc1 + merge of 7c4c62a04a2a80e3feb5d6c97aca1e413b11c790 from
drm-fixes:
$ uname -a
Linux debian 3.14.0-rc1-00015-g7c4c62a #48 SMP PREEMPT Sat Feb 8 17:33:48 EET
2014 x86_64 GNU/Linux
Mesa is from the 10.1 branch:
$ glxinfo |grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD RV730
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.1.0-rc1
(git-1e6bba5)
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 10.1.0-rc1 (git-1e6bba5)
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
Hardware is a Radeon HD 4650:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV730
PRO [Radeon HD 4650] (prog-if 00 [VGA controller])</pre>
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