Smoother Step node

Access: Nodes > Math > Smoother Step

Like Smooth Step but with an even smoother S-curve (zero slope and zero curvature at both edges). The transition looks cleaner in animations and procedural textures. Use this when Smooth Step looks slightly mechanical. Helpful for effects such as liquid puddle edges or transitions in skin color.

The below examples assume that Edge0 = 0.0 and Edge1 = 1.0

Input (RGB)	Output (RGB)
0.1, 0.1, 0.1	0.00856, 0.00856, 0.00856 (flatter ease-in than Smooth Step)
0.5, 0.5, 0.5	0.5, 0.5, 0.5
0.9, 0.9, 0.9	0.99144, 0.99144, 0.99144 (flatter ease-out than Smooth Step)

Smoother Step node inputs

Edge0	The lower bound threshold where the transition begins.
Edge1	The upper bound threshold where the transition completes.
Input	The input value to be interpolated.

Smoother Step node outputs

Output

The degree-5 quintic polynominal S-curve ramp from 0 to 1 between Edge0 and Edge1, with zero slope and curvature at both edges.