VisualShaderNodeColorFunc

int function = 0

A function to be applied to the input color.

FUNC_GRAYSCALE = 0

Enum: Function

Converts the color to grayscale using the following formula:

			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);
			

FUNC_HSV2RGB = 1

Enum: Function

Converts HSV vector to RGB equivalent.

FUNC_RGB2HSV = 2

Enum: Function

Converts RGB vector to HSV equivalent.

FUNC_SEPIA = 3

Enum: Function

Applies sepia tone effect using the following formula:

			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);
			

FUNC_LINEAR_TO_SRGB = 4

Enum: Function

Converts color from linear color space to sRGB color space using the following formula:

			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)));
			

The Compatibility renderer uses a simpler formula:

			vec3 c = input;
			return max(vec3(1.055) * pow(c, vec3(0.416666667)) - vec3(0.055), vec3(0.0));
			

FUNC_SRGB_TO_LINEAR = 5

Enum: Function

Converts color from sRGB color space to linear color space using the following formula:

			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)));
			

The Compatibility renderer uses a simpler formula:

			vec3 c = input;
			return c * (c * (c * 0.305306011 + 0.682171111) + 0.012522878);
			

FUNC_MAX = 6

Enum: Function

Represents the size of the Function enum.