Gain Scalar
Overview
The Gain scalar node creates a curve, the shape of which depends on the Gain value. The output of the node is the value of the gain curve corresponding to the Input value. Here's a graph showing the gain curve at two different Gain values:
The output value will be between 0 and 1. The node expects both the Input and Gain values to be between 0 and 1. It does clamp these values to make sure that they are within that range.
Settings:
- Name: This setting allows you to apply a descriptive name to the node, which can be helpful when using multiple Bias scalar nodes in a project.
- Enable: When checked, the node is active, and when unchecked the node is ignored.
- Gain: The value defining the shape of the gain curve, as in the graph above.
Error conditions:
- It is an error for there to be no Input value. In that case 0 is output from the node.
- It is an error for there to be no Gain value. In this case the Input value will be output.
Fun with Gain Scalar
The following examples show how the Bias scalar node can be used to modify the output of a node.
The image below shows the Bias scalar nodes effect on a radial gradient, as the Bias value changes from 0 to 1.
GainScalar_01_RadialGradientGain.jpg
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The images below illustrate the Bias scalar nodes effect on the three different Edge profiles, Smooth step, Bevel, and Radial, of the Simple shape shader.
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