Photon

Basic

The basic photon shader supports diffuse reflection and specular reflection and transmission/refraction.

    color "mib_photon_basic" (
        color           "diffuse",
        color           "specular",
        color           "transp",
        scalar          "ior_frac")

diffuse: is the diffuse color.
specular: is the specular color, which controls reflectivity.
transp: is the fraction of light transmitted.
ior_frac: is the refraction index ratio. It is used if the photon material is transparent.

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