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VisualShaderNodeColorFunc

繼承： VisualShaderNode < Resource < RefCounted < Object

Color 函式，在視覺化著色器圖中使用。

說明

接受一個 Color 到輸入埠，並根據 function 對其進行轉換。

屬性

Function

function

0

列舉

enum Function: 🔗

Function FUNC_GRAYSCALE = 0

使用以下公式將顏色轉換為灰度。

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);

Function FUNC_HSV2RGB = 1

將 HSV 向量轉換為等效的 RGB 向量。

Function FUNC_RGB2HSV = 2

將 RGB 向量轉換為等效的 HSV 向量。

Function FUNC_SEPIA = 3

使用以下公式套用棕褐色調效果。

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);

Function FUNC_LINEAR_TO_SRGB = 4

Converts color from linear encoding to nonlinear sRGB encoding using the following formula:

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 that may produce undefined behavior with negative input values:

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

Function FUNC_SRGB_TO_LINEAR = 5

Converts color from nonlinear sRGB encoding to linear encoding 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 that behaves poorly with negative input values:

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

Function FUNC_MAX = 6

代表 Function 列舉的大小。

屬性說明

Function function = 0 🔗

void set_function(value: Function)
Function get_function()

A function to be applied to the input color.