To apply it, select one or several objects and run either:

  • Get->Property->Arnold Properties->Visibility

  • Arnold->Properties->Visibility

  • SITOA_AddVisibilityProperties (script editor).

 

You can selectively disable an object's visibility for the various types of rays in the renderer. By default, objects are visible to all types of rays. Camera - Camera (AA) rays (i.e., primary or view rays). Shadow - shadow rays fired in the direct lighting calculations. Specular - specular_reflection rays. Transmission - transmission rays. Diffuse - indirect_diffuse rays (i.e. global illumination or GI rays). Specular - indirect_specular rays (i.e. specular reflection rays).

To set the visibility, add up the values of the rays you want to "see" the object.

For example, if an object is visible to the camera (primary visibility), and to transmission (both diffuse and specular), then that’s visibility 13 (1 + 4 + 8).


Ray typeDecimal Value
Camera (Primary Visibility)1
Shadow (Casts Shadows)2
Diffuse transmission4
Specular transmission8
Volume16
Diffuse reflection32
Specular reflection64
SSS (subsurface)128

Camera

Determines whether the object is visible to camera rays.

The tank in this example is invisible to camera rays but visible to all other types of rays, including shadow rays

Shadow

Enables the computation of shadows cast from the light. 


Diffuse Reflection

Affects indirect diffuse rays (i.e., global illumination, hemi, or GI rays).

Specular Reflection

You can selectively disable an object's visibility for the various types of rays in the renderer. By default, objects are visible to all types of rays. Specular Reflection visibility affects indirect specular rays (i.e., specular reflection rays).

Additionally, you may use the built-in "Visibility" parameters that each object has by default in Softimage. When SItoA's own visibility property is applied, it will override any Softimage visibility settings that the object itself has locally.

Diffuse Transmission

Object is visible in diffuse transmission and subsurface scattering. 

Specular Transmission

Object is visible in sharp and glossy specular transmission (refraction).

Volume

Object is visible in indirect volume rays.

 

 

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