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smoothstep

Returns a smooth Hermite interpolation between 0 and 1, if x is in the range [min, max].

ret smoothstep(min, max, x)

 

Parameters

ItemDescription

min

[in] The minimum range of the x parameter.

max

[in] The maximum range of the x parameter.

x

[in] The specified value to be interpolated.

 

Return Value

Returns 0 if x is less than min; 1 if x is greater than max; otherwise, a value between 0 and 1 if x is in the range [min, max].

Remarks

Use the smoothstep HLSL intrinsic function to create a smooth transition between two values. For example, you can use this function to blend two colors smoothly.

Type Description

Name Template Type Component Type Size
xscalar, vector, or matrix float any
minsame as input x float same dimension(s) as input x
maxsame as input x float same dimension(s) as input x
retsame as input x float same dimension(s) as input x

 

Minimum Shader Model

This function is supported in the following shader models.

Shader ModelSupported
Shader Model 2 (DirectX HLSL) and higher shader modelsyes
Shader Model 1 (DirectX HLSL) yes (vs_1_1 only)

 

See also

Intrinsic Functions (DirectX HLSL)

 

 

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