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    <body><span class="vcard"><a class="email" href="mailto:nhaehnle@gmail.com" title="Nicolai Hähnle <nhaehnle@gmail.com>"> <span class="fn">Nicolai Hähnle</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED NOTOURBUG - glMemoryBarrier is backwards"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=101572">bug 101572</a>
          <br>
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          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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         <tr>
           <td style="text-align:right;">Status</td>
           <td>NEW
           </td>
           <td>RESOLVED
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Resolution</td>
           <td>---
           </td>
           <td>NOTOURBUG
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            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED NOTOURBUG - glMemoryBarrier is backwards"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=101572#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED NOTOURBUG - glMemoryBarrier is backwards"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=101572">bug 101572</a>
              from <span class="vcard"><a class="email" href="mailto:nhaehnle@gmail.com" title="Nicolai Hähnle <nhaehnle@gmail.com>"> <span class="fn">Nicolai Hähnle</span></a>
</span></b>
        <pre>You're misinterpreting the spec.

glMemoryBarrier ensures that **writes from shaders** are visible to whatever
consumer you indicate with the given flag bits.

What you seem to be trying to do is ensure that **writes via the framebuffer**
are visible in subsequent compute shader invocations. For that, you need to
either:

(1) Bind a different framebuffer, or (probably more appropriate to what you're
trying to do)
(2) use glTextureBarrier.</pre>
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