Optimizations Rollout

On—When checked, transparent surfaces will cast a colored shadow. Otherwise, all shadows are black.

Note: Shadows will generate faster with this value turned off.

Antialiasing Threshold—The maximum color difference allowed between transparent object samples before antialiasing is triggered. Increasing the value of this color will make the shadow less sensitive to aliasing artifacts and improve speed, decreasing the value will increase the sensitivity, improving quality.

Supersampled Material—When on, only pass 1 is used during 2-pass antialiasing when shading a supersampled material.

Note: When off, rendering time can increase without 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 without resulting in a better image.

Skip Coplanar Faces—Prevents adjacent faces from shadowing each other. 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).