Created Image Output & Lambert/AO
Created Reflection
Merged Additive -> Arith
Added Antialias, Changed backGround
Set boundingSphere of Sky
Fixed not to appear backGround
Advancer can have State
Fixed Blinn-phong's specular
Added Fractal Support
Added areaFractal and modified Sponge
Added optimizing option
Added fog, lens, Fixed softShadow
Back to old world
Added rainbow, Fixed heidrichSeidel
Merged from rainbow
Added some objects : box/sphere
Merge commit
Merge branch 'master' of https://github.com/phi16/RayMarch
Added fusion/none, Added fog in sample
Created cookTorrance, fusion, randoms