#smoothstep

perform Hermite interpolation between two values

#Declaration

• float smoothstep(float edge0, float edge1, float x)
• vec2 smoothstep(vec2 edge0, vec2 edge1, vec2 x)
• vec3 smoothstep(vec3 edge0, vec3 edge1, vec3 x)
• vec4 smoothstep(vec4 edge0, vec4 edge1, vec4 x)
• vec2 smoothstep(float edge0, float edge1, vec2 x)
• vec3 smoothstep(float edge0, float edge1, vec3 x)
• vec4 smoothstep(float edge0, float edge1, vec4 x)

#Parameters

• edge0: Specifies the value of the lower edge of the Hermite function.
• edge1: Specifies the value of the upper edge of the Hermite function.
• x: Specifies the source value for interpolation.

#Description

smoothstep performs smooth Hermite interpolation between 0 and 1 when edge0 < x < edge1. This is useful in cases where a threshold function with a smooth transition is desired. smoothstep is equivalent to:

smoothstep returns 0.0 if x ≤ edge0 and 1.0 if x ≥ edge1. Results are undefined if edge0 ≥ edge1.

#See Also

• mix
• step