| 543 |
|
.TP |
| 544 |
|
.BI -lr \ N |
| 545 |
|
Limit reflections to a maximum of |
| 546 |
< |
.I N. |
| 546 |
> |
.I N, |
| 547 |
> |
if N is a positive integer. |
| 548 |
|
If |
| 549 |
|
.I N |
| 550 |
|
is zero or negative, then Russian roulette is used for ray |
| 552 |
|
.I -lw |
| 553 |
|
setting (below) must be positive. |
| 554 |
|
If N is a negative integer, then this sets the upper limit |
| 555 |
< |
of reflections past which Russian roulette will not be used. |
| 555 |
> |
of reflections past which Russian roulette will be used. |
| 556 |
|
In scenes with dielectrics and total internal reflection, |
| 557 |
|
a setting of 0 (no limit) may cause a stack overflow. |
| 558 |
|
.TP |
