diffuse - 73.1852 sec
he - 68.7628 sec
phong - 71.1277 sec
blinn - 68.4824 sec
poulin - 70.0093 sec
lewis - 67.9916 sec
torrance (0.08,1.6,-0.2,0.6,0.4) - 66.7417 sec
torrance2 (0.3,13.22,-0.78,0.1,0.9) - 69.4325 sec
ward Isotropic - 68.7327 sec
ward Anisotropic - 68.1523 sec
schlick single layer - 68.264 sec
schlick double layer - 68.7969 sec
oren - 67.9023 sec
strauss - 68.1292 sec
lafortune - 68.0285 sec
coupled - 68.288 sec
minnaert - (0.5,0.7) - 71.0112 sec
minnaert2 - (5.0,1.0) - 72.2206 sec
ashikhmin - (10,10,0.5,0.5) - 66.5203 sec
ashikhmin2 - (1,1,0.1,1.0) - 66.6665 sec
beardmaxwell - 71.2131 sec