mesa: 637e6a0aa8e5920965a0720673e11622786e86ed (master)

$ ./bin/gl-1.0-edgeflag-quads -auto
Probe color at (3,1)
  Expected: 0.000000 1.000000 0.000000 0.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
Probe color at (3,5)
  Expected: 0.000000 1.000000 0.000000 0.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
Probe color at (13,1)
  Expected: 0.000000 1.000000 0.000000 0.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
Probe color at (13,5)
  Expected: 0.000000 1.000000 0.000000 0.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
PIGLIT: {'result': 'fail' }

d6b3a193d4d525c5048ebf793e6a63fd98f92d64 is the first bad commit
commit d6b3a193d4d525c5048ebf793e6a63fd98f92d64
Author: Zack Rusin <zackr@vmware.com>
Date:   Wed Jul 31 07:34:49 2013 -0400

    draw: inject frontface info into wireframe outputs
    
    Draw module can decompose primitives into wireframe models, which
    is a fancy word for 'lines', unfortunately that decomposition means
    that we weren't able to preserve the original front-face info which
    could be derived from the original primitives (lines don't have a
    'face'). To fix it allow draw module to inject a fake face semantic
    into outputs from which the backends can figure out the original
    frontfacing info of the primitives.
    
    Signed-off-by: Zack Rusin <zackr@vmware.com>
    Reviewed-by: Roland Scheidegger <sroland@vmware.com>
    Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

:040000 040000 c03c3c58f6b2d41a576aa2c1388323bc4fdfb21e cb98c963ea0f7797496053122ad6b5c3f56a1861 M	src
bisect run success