Light falloff.
| Macros | |
| #define | RT_FALLOFF_NONE | 
| #define | RT_FALLOFF_INVERSE_CLAMPED | 
| #define | RT_FALLOFF_SQUARE_CLAMPED | 
| #define | RT_FALLOFF_LINEAR | 
| #define | RT_FALLOFF_INVERSE | 
| #define | RT_FALLOFF_SQUARE | 
| #define | RT_FALLOFF_STEP | 
| #define RT_FALLOFF_NONE | 
No light falloff.
| #define RT_FALLOFF_INVERSE_CLAMPED | 
Clamped inverse light falloff.
| #define RT_FALLOFF_SQUARE_CLAMPED | 
Clamped square light falloff.
| #define RT_FALLOFF_LINEAR | 
Linear light falloff.
| #define RT_FALLOFF_INVERSE | 
Inverse light falloff.
| #define RT_FALLOFF_SQUARE | 
Square light falloff.
| #define RT_FALLOFF_STEP | 
Step light falloff.