RT_FALLOFFΒΆ

RT_FALLOFF_NONE

No light falloff.

RT_FALLOFF_INVERSE_CLAMPED

Clamped inverse light falloff.

RT_FALLOFF_SQUARE_CLAMPED

Clamped square light falloff.

RT_FALLOFF_LINEAR

Linear light falloff.

RT_FALLOFF_INVERSE

Inverse light falloff.

RT_FALLOFF_SQUARE

Square light falloff.

RT_FALLOFF_STEP

Step light falloff.