User guide

19
Control (UI) Default Value Function
AI_RAY_REFRACTED On Toggle refraction rays on or off.
AI_RAY_DIFFUSE Off Toggle diffuse global illumination rays on or off.
AI_RAY_GLOSSY Off Toggle blurred reflection rays on or off.
Lighting > Environment (Cont.)
atmosphere none Sets the path to an atmosphere material if one is
defined or inherited.
skip_background_atmosphere Off Toggle the use of an atmosphere material on or off.
GI_falloff_start_dist 999999995904 Sets the distance at which global illumination rays begin
to decay, and their color starts to blend into the
background color.
GI_falloff_stop_dist 999999995904 Sets the distance at which global illumination rays
completely decay, at which point their color blends
entirely into the background color.
low_light_threshold 0.001 Sets the light sample value below which Arnold skips ray
tracing a shadow ray.
Lighting > SSS
sss_use_autobump disabled
sss_bssrdf_samples 0 A brute-force ray-traced alternative to point-cloud
subsurface scattering (0 = Off).
Lighting > Shadows
shadow_bias 1.00e-6
shadows_obey_light_linking On If on, light groups (light linking) is used to determine
which objects cast shadows.
shadow_terminator_fix On If on, avoids faceting in shadows near the shadow
horizon.
Note: When enabled, this can result in incorrect
shadowing in concave regions.
2 NODES A-C | ARNOLDGLOBALSETTINGS