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      <base href="https://bugs.freedesktop.org/">
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - dEQP-GLES3.functional.shaders.derivate.dfdx.fbo_float_vec2_highp fails"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97002">97002</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>dEQP-GLES3.functional.shaders.derivate.dfdx.fbo_float_vec2_highp fails
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>11.2
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/DRI/i965
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>idr@freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>xinghua.cao@intel.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-3d-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>We found this issue when running WebGL 2.0 test as there is a case ported from
native dEQP. However, this also fails with native dEQP test.
Steps to repro:
1. ./deqp-gles3 -n
dEQP-GLES3.functional.shaders.derivate.dfdx.fbo_float_vec2_highp

Result:
This case fail. In fact, there are other 18 failure cases related with dfdx.

Notes:
We found these failure dfdx cases only exist on Broadwell machine. But these
cases pass on Skylake machine. And dfdy cases pass on Broadwell and SKylake
machine. 

Are there some good reason to explain it, thank you.</pre>
        </div>
      </p>


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