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The bias will affect the falloff of the curvature and will always be linear, decreasing with the distance from the shaded point to the sampled point. Bias can be used to take further samples into account more or less while nearby points have more weight.

• The closer to 0.0, only points closest to the shading point will contribute.
  
• With the default of 0.5 any points close to Max Distance will contribute less, and points close to the shaded point will contribute more. 
• The closer to 1.0, the more all sampled points will contribute. At exactly 1.0 sampled points at all distances will contribute equally.

Max Distance

The max distance at which objects may occlude. Zero is infinite (all objects occlude), this may not be desirable in enclosed or interior spaces.

Output Type

Set to "Concave", only concave curvature will be output. Set  Set to "Convex", only convex curvature will be output. "Both" will show both convex and concave curvature.

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