| 145 |
|
.I source |
| 146 |
|
primitive is supported as well, and multiple receivers (and multiple output |
| 147 |
|
matrices) may be identified by different modifier names. |
| 148 |
< |
(Make sure that surfaces using the same modifier are grouped together.)\0 |
| 148 |
> |
(Make sure that surfaces using the same modifier are grouped together, |
| 149 |
> |
and that the modifiers are unique and not used elsewhere in the |
| 150 |
> |
scene description.)\0 |
| 151 |
|
Though it may be counter-intuitive, receivers are often light sources, |
| 152 |
|
since samples end up there in a backwards ray-tracing system such as RADIANCE. |
| 153 |
|
When using local geometry, the overall aperture shape should be close to flat. |
