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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Slow performance using glDrawElementsBaseVertex"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105256">105256</a>
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<th>Summary</th>
<td>Slow performance using glDrawElementsBaseVertex
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>17.3
</td>
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<th>Hardware</th>
<td>Other
</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>Drivers/Gallium/r600
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
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<th>Reporter</th>
<td>logan@bacoosta.com
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<th>QA Contact</th>
<td>dri-devel@lists.freedesktop.org
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<p>
<div>
<pre>Original application bug report here:
<a href="https://github.com/gonetz/GLideN64/issues/1561">https://github.com/gonetz/GLideN64/issues/1561</a>
This bug happens using mupen64plus (N64 emulator) and the GLideN64 graphics
plugin.
The application uses VBO streaming
(<a href="https://www.khronos.org/opengl/wiki/Buffer_Object_Streaming">https://www.khronos.org/opengl/wiki/Buffer_Object_Streaming</a>) using
ARB_buffer_storage to upload the VBO data.
Multiple users that when using Mesa + r600 driver, the performance was abysmal.
It turns out that converting the glDrawElementsBaseVertex calls to glDrawArrays
fixed the problem.
You can see the commit that fixed the problem here:
<a href="https://github.com/loganmc10/GLideN64/commit/9bcfa67d9550c7f1cd4ba72f657facd66a4d27e4">https://github.com/loganmc10/GLideN64/commit/9bcfa67d9550c7f1cd4ba72f657facd66a4d27e4</a></pre>
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