Better iris texture.
Merge branch 'master' of https://github.com/worklist/hifi
add timing for TwoPole calls
time TwoPole call for 256 samples
Fix iris orientations: start with the head orientation, then rotate onto the
lookat vector.  This way, the irises don't rotate around as we yaw.
Shed some light on what these shaders are doing, so to speak.
Ryan's new iris texture.
migrate encodeTreeBitstream() to use params class
Added refraction to irises.
spacing
Merge pull request #539 from ey6es/master

Better iris texture, fixed iris rotations.
It seems gl_ModelViewMatrixInverse is problematic on OS X; let's try passing
in the camera's position as transformed into model space.
Merge pull request #541 from ey6es/master

Fix for irises on OS X: compute and pass in the model space eye position as a uniform.
Merge pull request #540 from ZappoMan/encode_params

Change encodeTreeBitstream() to use params class
perform the two-pole effect across 256 samples, not one per call
add timing for two pole effect
remove the timing for twopole testing
remove the unused timevals
Merge remote-tracking branch 'upstream/master' into twopole
Merge pull request #542 from birarda/twopole

smarten up the TwoPole tick call