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    <body><span class="vcard"><a class="email" href="mailto:qiang.miao@intel.com" title="qiang.miao@intel.com">qiang.miao@intel.com</a>
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              <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Severe noise corruption observed while running WebGL “Fluid Simulation ”"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=87345">bug 87345</a>
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          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>RESOLVED
           </td>
           <td>REOPENED
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Resolution</td>
           <td>NOTOURBUG
           </td>
           <td>---
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            <b><a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Severe noise corruption observed while running WebGL “Fluid Simulation ”"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=87345#c9">Comment # 9</a>
              on <a class="bz_bug_link 
          bz_status_REOPENED "
   title="REOPENED - Severe noise corruption observed while running WebGL “Fluid Simulation ”"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=87345">bug 87345</a>
              from <span class="vcard"><a class="email" href="mailto:qiang.miao@intel.com" title="qiang.miao@intel.com">qiang.miao@intel.com</a>
</span></b>
        <pre>Can't agree with you
Why the same code can work correctly on Windows?

If these variables areundefined variables like you said
WebGL will report error and draw nothing

+  vec2 uv = vec2(0, 0);
   vec2 motion = decode2( texture2D(sampler_fluid, uv))*pixelSize*0.75;

-  vec2 uv = uv - motion; // add fluid motion
+  uv = uv - motion; // add fluid motion


-  vec2 gz; // blue blur2 gradient vector
+  vec2 gz = vec2(0, 0); // blue blur2 gradient vector

Those variables are defined without initial value
There is something wrong with shader compiler on how to handle default value</pre>
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