Blend 节点

描述

使用 Mode 参数定义的混合模式将输入 Blend 的值混合到输入 Base 上。指混合的强度由输入 Opacity 定义。Opacity 值为 0 将原封不动返回输入 Base。

端口

名称	方向	类型	绑定	描述
Base	输入	动态矢量	无	基础层值
Blend	输入	动态矢量	无	混合层值
Opacity	输入	Float	无	混合强度
Out	输出	动态矢量	无	输出值

控件

名称	类型	选项	描述
Mode	下拉选单	Burn、Darken、Difference、Dodge、Divide、Exclusion、HardLight、HardMix、Lighten、LinearBurn、LinearDodge、LinearLight、LinearLightAddSub、Multiply、Negation、Overlay、PinLight、Screen、SoftLight、Subtract、VividLight、Overwrite	要应用的混合模式

生成的代码示例

以下示例代码表示此节点在每个混合模式下的一种可能结果。

Burn

void Unity_Blend_Burn_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out =  1.0 - (1.0 - Blend)/Base;
    Out = lerp(Base, Out, Opacity);
}

Darken

void Unity_Blend_Darken_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = min(Blend, Base);
    Out = lerp(Base, Out, Opacity);
}

Difference

void Unity_Blend_Difference_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = abs(Blend - Base);
    Out = lerp(Base, Out, Opacity);
}

Dodge

void Unity_Blend_Dodge_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Base / (1.0 - Blend);
    Out = lerp(Base, Out, Opacity);
}

Divide

void Unity_Blend_Divide_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Base / (Blend + 0.000000000001);
    Out = lerp(Base, Out, Opacity);
}

Exclusion

void Unity_Blend_Exclusion_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Blend + Base - (2.0 * Blend * Base);
    Out = lerp(Base, Out, Opacity);
}

HardLight

void Unity_Blend_HardLight_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    float4 result1 = 1.0 - 2.0 * (1.0 - Base) * (1.0 - Blend);
    float4 result2 = 2.0 * Base * Blend;
    float4 zeroOrOne = step(Blend, 0.5);
    Out = result2 * zeroOrOne + (1 - zeroOrOne) * result1;
    Out = lerp(Base, Out, Opacity);
}

HardMix

void Unity_Blend_HardMix_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = step(1 - Base, Blend);
    Out = lerp(Base, Out, Opacity);
}

Lighten

void Unity_Blend_Lighten_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = max(Blend, Base);
    Out = lerp(Base, Out, Opacity);
}

LinearBurn

void Unity_Blend_LinearBurn_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Base + Blend - 1.0;
    Out = lerp(Base, Out, Opacity);
}

LinearDodge

void Unity_Blend_LinearDodge_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Base + Blend;
    Out = lerp(Base, Out, Opacity);
}

LinearLight

void Unity_Blend_LinearLight_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Blend < 0.5 ? max(Base + (2 * Blend) - 1, 0) : min(Base + 2 * (Blend - 0.5), 1);
    Out = lerp(Base, Out, Opacity);
}

LinearLightAddSub

void Unity_Blend_LinearLightAddSub_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Blend + 2.0 * Base - 1.0;
    Out = lerp(Base, Out, Opacity);
}

Multiply

void Unity_Blend_Multiply_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Base * Blend;
    Out = lerp(Base, Out, Opacity);
}

Negation

void Unity_Blend_Negation_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = 1.0 - abs(1.0 - Blend - Base);
    Out = lerp(Base, Out, Opacity);
}

Overlay

void Unity_Blend_Overlay_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    float4 result1 = 1.0 - 2.0 * (1.0 - Base) * (1.0 - Blend);
    float4 result2 = 2.0 * Base * Blend;
    float4 zeroOrOne = step(Base, 0.5);
    Out = result2 * zeroOrOne + (1 - zeroOrOne) * result1;
    Out = lerp(Base, Out, Opacity);
}

PinLight

void Unity_Blend_PinLight_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    float4 check = step (0.5, Blend);
    float4 result1 = check * max(2.0 * (Base - 0.5), Blend);
    Out = result1 + (1.0 - check) * min(2.0 * Base, Blend);
    Out = lerp(Base, Out, Opacity);
}

Screen

void Unity_Blend_Screen_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = 1.0 - (1.0 - Blend) * (1.0 - Base);
    Out = lerp(Base, Out, Opacity);
}

SoftLight

void Unity_Blend_SoftLight_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    float4 result1 = 2.0 * Base * Blend + Base * Base * (1.0 - 2.0 * Blend);
    float4 result2 = sqrt(Base) * (2.0 * Blend - 1.0) + 2.0 * Base * (1.0 - Blend);
    float4 zeroOrOne = step(0.5, Blend);
    Out = result2 * zeroOrOne + (1 - zeroOrOne) * result1;
    Out = lerp(Base, Out, Opacity);
}

Subtract

void Unity_Blend_Subtract_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = Base - Blend;
    Out = lerp(Base, Out, Opacity);
}

VividLight

void Unity_Blend_VividLight_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    float4 result1 = 1.0 - (1.0 - Blend) / (2.0 * Base);
    float4 result2 = Blend / (2.0 * (1.0 - Base));
    float4 zeroOrOne = step(0.5, Base);
    Out = result2 * zeroOrOne + (1 - zeroOrOne) * result1;
    Out = lerp(Base, Out, Opacity);
}

Overwrite

void Unity_Blend_Overwrite_float4(float4 Base, float4 Blend, float Opacity, out float4 Out)
{
    Out = lerp(Base, Blend, Opacity);
}