Raytrace Motion Blur
Enables or disables motion blur for traced rays. For example, a moving object as seen in a mirror will only show motion blur if this option is enabled.
Raytrace Displacements
Enables or disables ray tracing of true geometric displacements. The default is to ray trace displacements as bump maps (a displaced surface appears bump mapped in a mirror reflection). Enabling this feature makes ray tracing slower and forces 3Delight to use more memory so this option should be used with care.
Raytrace Bias
Specifies a bias for rays starting point to avoid potentially erroneous intersections with emitting surface. The default value is ‘0.01’.
Trace subset
Specifies one or several Maya object sets that is used to narrow down what objects are visible to ray traced rays. This feature can be useful when a scene is using referenced objects that already have their "Transmission" attribute correctly set, but only part of these objects are needed to be visible to ray traced rays in this specific scene. The options are:
Option | Description |
|---|---|
All Objects | All objects whose "Transmission" and "Visible to Reflections" attributes have been properly set will be visible to ray traced rays. This is the default. |
Objects in selected sets | Only objects in the selected Maya sets and whose "Transmission" attribute have been properly set will be visible to ray traced rays. The "Select Sets" button can be used to select the desired Maya sets to include. |
Objects not in selected sets | Only objects that are not in the selected Maya sets and whose "Transmission" attributes have been properly set will be visible to ray traced rays. The "Select Sets" button can be used to select the desired Maya sets to exclude. |
Note that the 3Delight for Maya built-in Hypershade shaders will ignore the trace subset attribute when computing reflections and refractions. Only the Visible in Reflections and Visible in Refractions render stats attributes will be honoured for reflections and refractions.