Unity Products:Amplify Shader Editor/Power

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Power Node

The Power node ( shortcut: E key ) calculates a value using the exponentiation operator Base^Exp.

• With Exp greater than 0 it corresponds to multiplying base by itself exp times, p.e Base = 2, Exp = 3 results in 2 x 2 x 2
• With Exp lower than 0 it corresponds to the inverse operation described above, p.e Base = 2, Exp = -3 results in 1/(2 x 2 x 2)
• On the other hand if Exp equals 0 then it will always output 1 independently of the Base value specified.

Power on multi-channel data types generates an output of the same type with the operator applied per-channel.

Note: Please check the following table for a complete behavior of the power operation depend on its input values.

Base	Exp	Result
< 0	any	NaN
> 0	== 0	1
== 0	> 0	0
== 0	< 0	Infinite
> 0	< 0	1 / Base-Exp
== 0	== 0	Depends on GPU (0, 1 or NaN)

Nodes used: Float, Texture Sample, Power

Node Parameter	Description	Default Value
Base	Base value on the exponentiation operator. Only visible if the respective input port is not connected.	0
Exp	Exponent value on the exponentiation operator. Only visible if the respective input port is not connected.	0
Safe Power	When toggled on, assures that Base is always greater than 0 to avoid indeterminations/NaN.	False

Input Port	Description	Type
Base	Base value on the exponentiation operator.	Float [1]
Exp	Exponent value on the exponentiation operator. This port sets a minimum value of 0.	Float

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1. ^ Port automatically adapts to all connection types except Matrices and Sampler types.

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