https://en.wikipedia.org/wiki/Solid_spherical_harmonics Solid SH Functions: 3D point x=Polar(r,d); The fn H_n()=r^n*Y_n(d) extends SH into 3D density fields

https://github.com/michaldrobot/ShaderFastLibs/blob/master/ShaderFastMathLib.h About A shader math library for optimized approximate transcendental functions. Optimized and tested on AMD GCN architecture.

http://timothylottes.blogspot.jp/2014/06/metal.html

https://www.unrealengine.com/blog/ue4-zen-garden-using-metal-api-for-ios-8-revealed-at-wwdc

Apple Ditching OpenGL? http://www.alexstjohn.com/WP/2014/06/03/apple-ditching-opengl/ Rate my API by @ kenpex http://c0de517e.blogspot.de/2014/06/rate-my-api.html

http://graphics.cs.cmu.edu/projects/multirate/

http://www.cse.chalmers.se/~d00sint/CompressedShadowsPreprint.pdf

http://www.derschmale.com/2014/06/02/deferred-subsurface-scattering-using-compute-shaders/