A [Color] function to be used within the visual shader graph. Accept a [Color] to the input port and transform it according to [member function]. A function to be applied to the input color. See [enum Function] for options. Converts the color to grayscale using the following formula: [codeblock] vec3 c = input; float max1 = max(c.r, c.g); float max2 = max(max1, c.b); float max3 = max(max1, max2); return vec3(max3, max3, max3); [/codeblock] Converts HSV vector to RGB equivalent. Converts RGB vector to HSV equivalent. Applies sepia tone effect using the following formula: [codeblock] vec3 c = input; float r = (c.r * 0.393) + (c.g * 0.769) + (c.b * 0.189); float g = (c.r * 0.349) + (c.g * 0.686) + (c.b * 0.168); float b = (c.r * 0.272) + (c.g * 0.534) + (c.b * 0.131); return vec3(r, g, b); [/codeblock] Converts color from linear color space to sRGB color space using the following formula: [codeblock] vec3 c = clamp(c, vec3(0.0), vec3(1.0)); const vec3 a = vec3(0.055f); return mix((vec3(1.0f) + a) * pow(c.rgb, vec3(1.0f / 2.4f)) - a, 12.92f * c.rgb, lessThan(c.rgb, vec3(0.0031308f))); [/codeblock] The Compatibility renderer uses a simpler formula: [codeblock] vec3 c = input; return max(vec3(1.055) * pow(c, vec3(0.416666667)) - vec3(0.055), vec3(0.0)); [/codeblock] Converts color from sRGB color space to linear color space using the following formula: [codeblock] vec3 c = input; return mix(pow((c.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), c.rgb * (1.0 / 12.92), lessThan(c.rgb, vec3(0.04045))); [/codeblock] The Compatibility renderer uses a simpler formula: [codeblock] vec3 c = input; return c * (c * (c * 0.305306011 + 0.682171111) + 0.012522878); [/codeblock] Represents the size of the [enum Function] enum.