RAYBIT

RAYBIT_NONE	None.
RAYBIT_REFLECTION	Ray chain contains a reflection ray.
RAYBIT_TRANSPARENCY	Ray chain contains a transparency ray (refractions are not contained).
RAYBIT_REFRACTION	Ray chain contains a refraction ray.
RAYBIT_CUSTOM	Ray chain contains a custom ray.
RAYBIT_CURR_REFLECTION	Current ray is a reflection ray.
RAYBIT_CURR_TRANSPARENCY	Current ray is a transparency ray.
RAYBIT_CURR_REFRACTION	Current ray is a refraction ray.
RAYBIT_CURR_CUSTOM	Current ray is a custom ray.
RAYBIT_VOLUMETRICLIGHT	Current ray is used to calculate a volumetric light.
RAYBIT_ALLOWVLMIX	Custom mixing of visible light sources allowed for the ray; bit must be deleted by shader if used.
RAYBIT_GI	Current ray is a Global Illumination ray.
RAYBIT_BLURRY	Current ray is a blurry ray.
RAYBIT_SSS	Current ray is a subsurface scattering ray.
RAYBIT_AO	Current ray is an Ambient Occlusion ray.
RAYBIT_COMPOSITING	Current ray is a compositing ray.