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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Other multisample "broadcast" blits do not work"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94128">94128</a>
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<th>Summary</th>
<td>Other multisample "broadcast" blits do not work
</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
</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
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>idr@freedesktop.org
</td>
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<th>Reporter</th>
<td>idr@freedesktop.org
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
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<p>
<div>
<pre>The glBlitFramebuffer man page says:
When the color buffer is transferred, values are taken from the read
buffer of the read framebuffer and written to each of the draw buffers
of the draw framebuffer.
Commit a6022e54 modified one path through meta to use gl_FragColor to implement
this behavior for multisample-to-singlesample "broadcast" blits where the
destination has multiple enabled color buffers. This fixed the GLES3
confromance test
framebuffer_blit_functionality_multisampled_to_singlesampled_blit.
Based on inspection of the code (and the commit message for a6022e54),
broadcast blits involving integer (or unsigned integer) color buffers or
multisample-to-multisample blits are still broken. I am currently working on
patches that will happen to fix the integer cases.
However, we need test cases. There is one related test case on the GLES3 CTS,
and there are zero related test cases in piglit. We need to verify the full
cross product of (MS-to-MS, MS-to-SS) x (normalized, integer, unsigned integer,
depth component).</pre>
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</p>
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