Comment # 1 on bug 100785 from Hi-Angel

Ah, a fail output:

$ LD_LIBRARY_PATH=/home/constantine/Projects/mesa/lib
LIBGL_DRIVERS_PATH=/home/constantine/Projects/mesa/lib/gallium
/home/constantine/Projects/piglit/bin/arb_gpu_shader5-interpolateAtSample -auto
-fbo
Probe color at (0,0)
  Expected: 0 255 0
  Observed: 20 195 0
PIGLIT: {"result": "fail" }