Better iris texture.
Merge branch 'master' of https://github.com/worklist/hifi
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
Merge remote-tracking branch 'upstream/master' into twopole