9

1362 Chapter 15: Lights and Cameras
Inter face
Transparent Shadows group
On—When checked, transparent sur faces will c ast
a colored shadow. Otherwise, all shadows are
black.
Note: Shadows wil l generate faster w ith this va lue
turned off.
A stained glass appears solid with the transparency
optimization turned off.
Antialiasing Threshold—The maximum color
difference allowed between transparent object
samples before antialiasing (page 3–907) is
tr iggered. Increasing the value of this color will
make the shadow less sensitive to aliasing artifacts
and improve speed, decreasing the value w ill
increase the sensitivit y, improving quality.
Antialias Suppression group
Super sampled M ateri al—When on, only pass 1 is
used during 2-pass antialiasing when shading a
supersampled (page 3–1018) material.
Note: When off, rendering time can increase
w ithout resulting in a better image.
Reflect/Refract—When on only pass 1 is used
during 2-pass antialiasing when shading
reflections or refractions.
Note: When off, rendering time can increase
w ithout resulting in a better image.
Coplanar Face Culling group
Sk ip Coplanar Faces—Prevents adjacent faces
from shadowing each othe r. This is of particular
concern at the terminator on curved surfaces such
as spheres.
Threshold—The angle between adjacent faces.
Range = 0.0 (perpendicular) to 1.0 (parallel).