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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - vkGetQueryPoolResults returns incorrect query status for large query buffers (bisected)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105292">105292</a>
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<th>Summary</th>
<td>vkGetQueryPoolResults returns incorrect query status for large query buffers (bisected)
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
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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
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<th>Component</th>
<td>Drivers/Vulkan/radeon
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
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<th>Reporter</th>
<td>philip.rebohle@tu-dortmund.de
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<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
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<pre>Created <span class=""><a href="attachment.cgi?id=137687" name="attach_137687" title="Modification to the 'occlusionquery' demo to reproduce the issue">attachment 137687</a> <a href="attachment.cgi?id=137687&action=edit" title="Modification to the 'occlusionquery' demo to reproduce the issue">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=105292&attachment=137687'>[review]</a>
Modification to the 'occlusionquery' demo to reproduce the issue
Under certain circumstances, vkGetQueryPoolResults will always return
VK_NOT_READY for a query pool, even when all of the requested queries should be
available. When using VK_QUERY_RESULT_WAIT_BIT, the function never returns.
The attached patch is a modification to Sascha Willems' 'occlusionquery' demo
which triggers the issue. Tested on an RX 480, mesa-git as of
d448954228e69fd1b4000ea13e28c2ba2832db13, with validation layers enabled.
The following conditions have to be met in order to trigger this issue:
- The query pool has to be fairly large (>= 32 queries)
- vkCmdBeginQuery has to be called shortly or immediately after
vkCmdResetQueryPool, outside a render pass instance.
This issue was introduced with the following commit:
[a41e2e9cf5f865f21e32cac2ed2e25dd21a05119] radv: allow to use a compute shader
for resetting the query pool</pre>
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