smoothstep
Returns a smooth Hermite interpolation between 0 and 1, if x is in the range [min, max].
| ret smoothstep(min, max, x) |
|---|
Parameters
| Item | Description |
|---|---|
| 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 |
|---|---|---|---|
| x | scalar, vector, or matrix | float | any |
| min | same as input x | float | same dimension(s) as input x |
| max | same as input x | float | same dimension(s) as input x |
| ret | same as input x | float | same dimension(s) as input x |
Minimum Shader Model
This function is supported in the following shader models.
| Shader Model | Supported |
|---|---|
| Shader Model 2 (DirectX HLSL) and higher shader models | yes |
| Shader Model 1 (DirectX HLSL) | yes (vs_1_1 only) |