blendSaturation: Chroma Channel Filter

HSV Saturation Isolation System

Saturation blending isolates and replaces chroma intensity while preserving color identity and brightness through HSV channel manipulation. Base provides hue and value; blend contributes saturation data exclusively.

$$HSV_{result} = (H_{base}, S_{blend}, V_{base})$$

Component	Source	Visual Effect
Hue	Base	Color identity preserved
Saturation	Blend	Chroma intensity replaced
Value	Base	Brightness pattern maintained

ライブエディター

const fragment = () => {
      const brightPattern = float(0.4).step(uv.x.mul(15).sin().abs()).mul(0.6).add(0.4)
      const chromaGrad = uv.y
      const color = blendSaturation(
              hsv2rgb(vec3(0.6, 0.3, brightPattern)),
              hsv2rgb(vec3(0.6, chromaGrad, 0.8))
      )
      return vec4(color, 1)
}