# | Line 178 | Line 178 | option (below) may be used to override this. | |
---|---|---|
178 | This option is especially useful in | |
179 | conjunction with ximage(1) for computing illuminance at scene points. | |
180 | .TP | |
181 | < | .BR \-R |
182 | < | Boolean switch to control random sampling. |
181 | > | .BR \-u |
182 | > | Boolean switch to control uncorrelated random sampling. |
183 | When "off", a low-discrepancy sequence is used, which reduces | |
184 | variance but can result in a brushed appearance in specular highlights. | |
185 | When "on", pure Monte Carlo sampling is used in all calculations. |
– | Removed lines |
+ | Added lines |
< | Changed lines |
> | Changed lines |