| 68 |
|
ascii, 'f' for single-precision floating point, |
| 69 |
|
and 'd' for double-precision floating point. |
| 70 |
|
In addition to these three choices, the character 'c' may be used |
| 71 |
< |
to denote 4-byte floating point (Radiance) color format |
| 72 |
< |
for the output of values only |
| 73 |
< |
.I (\-ov |
| 74 |
< |
option, below). |
| 71 |
> |
to denote 4-byte RGBE (Radiance) color format |
| 72 |
> |
for the output of individual color values only, and the |
| 73 |
> |
.I \-x |
| 74 |
> |
and |
| 75 |
> |
.I \-y |
| 76 |
> |
options should also be specified to create a valid output picture. |
| 77 |
|
If the output character is missing, the input format is used. |
| 78 |
|
.IP |
| 79 |
|
Note that there is no space between this option and its argument. |
| 113 |
|
.IP |
| 114 |
|
M material name |
| 115 |
|
.IP |
| 116 |
+ |
r mirrored value contribution |
| 117 |
+ |
.IP |
| 118 |
+ |
x unmirrored value contribution |
| 119 |
+ |
.IP |
| 120 |
+ |
R mirrored ray length |
| 121 |
+ |
.IP |
| 122 |
+ |
X unmirrored ray length |
| 123 |
+ |
.IP |
| 124 |
|
~ tilde (end of trace marker) |
| 125 |
|
.IP |
| 126 |
|
If the letter 't' appears in |
| 653 |
|
termination, and the |
| 654 |
|
.I -lw |
| 655 |
|
setting (below) must be positive. |
| 656 |
< |
If N is a negative integer, then this sets the upper limit |
| 657 |
< |
of reflections past which Russian roulette will be used. |
| 656 |
> |
If N is a negative integer, then this limits the maximum |
| 657 |
> |
number of reflections even with Russian roulette. |
| 658 |
|
In scenes with dielectrics and total internal reflection, |
| 659 |
|
a setting of 0 (no limit) may cause a stack overflow. |
| 660 |
|
.TP |
