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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - glBlendFuncSeparatei (IrisPro with Mesa DRI / 3.0 Mesa 10.0.1)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=76978">76978</a>
          </td>
        </tr>

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

        <tr>
          <th>Summary</th>
          <td>glBlendFuncSeparatei (IrisPro with Mesa DRI / 3.0 Mesa 10.0.1)
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-3d-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>bk@f-m.fm
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>10.0
          </td>
        </tr>

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

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Mesa reports availability of ARB_draw_buffers_blend but glBlendFuncSeparatei
fails with GL_INVALID_OPERATION.

HW is BrixPro with i7-4770R with SteamOS (Mesa DRI / 3.0 Mesa 10.0.1).

To reproduce bug:

    git clone git://github.com/bkaradzic/bx.git
    git clone git://github.com/bkaradzic/bgfx.git
    cd bgfx
    ../bx/tools/linux/bin/premake4 --file=premake/premake4.lua --gcc=linux-gcc
gmake
    make -C .build/projects/gmake-linux config=debug64 example-19-oit
    cd examples/runtime
    ../../.build/linux64_gcc/bin/example-18-oitDebug

Switch to MRT option, and you will get (MESA_DEBUG=verbose):
"Mesa: User error: GL_INVALID_OPERATION in unsupported function called
(unsupported extension or deprecated function?)"</pre>
        </div>
      </p>
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