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      <base href="https://bugs.freedesktop.org/" />
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        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [BDW]Piglit spec_AMD_vertex_shader_layer_amd_vertex_shader_layer-layered-depth-texture-render fails"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=77851">77851</a>
          </td>
        </tr>

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

        <tr>
          <th>Summary</th>
          <td>[BDW]Piglit spec_AMD_vertex_shader_layer_amd_vertex_shader_layer-layered-depth-texture-render fails
          </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>huax.lu@intel.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

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

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>System Environment:
--------------------------
Platform: Broadwell
Libdrm:       
(master)libdrm-2.4.53-6-gd4083dc762a2974c35ecd16be995272bbb6d57b4
Mesa:        (master)34a68345e228b7cbc1bc6909704a89c08bf5368e
Xserver:   
(master)xorg-server-1.15.99.902-47-ge924034269532979f1e88947ee9c33d30461edae
Xf86_video_intel:(master)2.99.911-94-gbb5b21e34f6cbe44a249e566471754b45c500e60
Libva:        (staging)8577efbd3b1d4e8f113f78cf13d2182aa681b738
Libva_intel_driver:(staging)42258e128f19b93aa102672d5f61eb73d9f9808f
Kernel:    (drm-intel-nightly)1e771b84e47085ef9b6efea1321e7cb5a8b2c065

Bug detailed description:
-----------------------------
It fails on Broadwell with Mesa master branch, but works well on Haswell.
output:
libGL: screen 0 does not appear to be DRI3 capable
libGL: pci id for fd 4: 8086:1616, driver i965
libGL: OpenDriver: trying /opt/X11R7/lib/dri/i965_dri.so
Probe depth at (0,0)
  Expected: 0.514286
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.528571
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.542857
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.557143
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.585714
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.600000
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.614286
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.628571
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.657143
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.671429
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.685714
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.700000
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.728571
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.742857
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.757143
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.771429
  Observed: 1.000000
Probe depth at (0,0)
  Expected: 0.800000
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.814286
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.828571
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.842857
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.871429
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.885714
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.900000
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.914286
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.942857
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.957143
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.971429
  Observed: 0.000000
Probe depth at (0,0)
  Expected: 0.985714
  Observed: 0.000000
PIGLIT: {'result': 'fail' }

Reproduce steps:
----------------------------
1. xinit
2. ./bin/amd_vertex_shader_layer-layered-depth-texture-render -auto</pre>
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