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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [regression bisected IVB] piglit read-front test fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78515">78515</a>
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<th>CC</th>
<td>idr@freedesktop.org
</td>
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<th>Assignee</th>
<td>kenneth@whitecape.org
</td>
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<th>Summary</th>
<td>[regression bisected IVB] piglit read-front test fails
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
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<th>Severity</th>
<td>major
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>All
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<th>Reporter</th>
<td>idr@freedesktop.org
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<th>Hardware</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>git
</td>
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Product</th>
<td>Mesa
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<pre>On my Thinkpad X230 I get:
[idr@mumford-wire piglit]$ bin/read-front -auto
Mesa warning: couldn't open libtxc_dxtn.so, software DXTn
compression/decompression unavailable
Probe color at (0,0)
Expected: 0.000000 0.000000 1.000000
Observed: 0.000000 0.000000 0.000000
Probe color at (0,75)
Expected: 0.000000 1.000000 0.000000
Observed: 0.000000 0.000000 0.000000
PIGLIT: {'result': 'fail' }
This bisected to:
commit cde8bad1c9363ee293ae7844bcecb6179426ea65
Author: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
Date: Mon May 5 11:02:18 2014 -0700
i965: Always intel_prepare_render() after invalidating front buffers.
Fixes glean/texture_srgb, which hit recursive-flush prevention
assertions in vbo_exec_FlushVertices.
This probably hurts the performance of front buffer rendering, but
very few people in their right mind do front buffer rendering.
Fixes Glean's texture_srgb test.
Cc: "10.2" <<a href="mailto:mesa-stable@lists.freedesktop.org">mesa-stable@lists.freedesktop.org</a>>
Signed-off-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
Acked-by: Anuj Phogat <<a href="mailto:anuj.phogat@gmail.com">anuj.phogat@gmail.com</a>>
Reviewed-by: Eric Anholt <<a href="mailto:eric@anholt.net">eric@anholt.net</a>></pre>
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