Shader "Castle/ColorMix" {

Properties {

// 基本贴图

_MainTex ("Texture Image", 2D) = "white" {}

// 爆光度

_Explosure("Explosure", Float) = 1.0

// 整体提亮

_HighLight("HighLight", Float) = 0

// 混入黑白

_Brightness("Brightness", Float) = 0

// 这里是混入各颜色分量

_Color ("Main Color", COLOR) = (0,0,0,0)

}

SubShader {

Pass {

CGPROGRAM

#pragma vertex vert

#pragma fragment frag

uniform sampler2D _MainTex;

uniform float4 _MainTex_ST;

uniform float _Explosure;

uniform float _HighLight;

uniform float _Brightness;

uniform float4 _Color;

struct vertexInput {

float4 vertex : POSITION;

float4 texcoord : TEXCOORD0;

};

struct vertexOutput {

float4 pos : SV_POSITION;

float4 tex : TEXCOORD0;

};

vertexOutput vert(vertexInput input)

{

vertexOutput output;

output.tex = input.texcoord;

output.pos = mul(UNITY_MATRIX_MVP, input.vertex);

return output;

}

float4 frag(vertexOutput input) : COLOR

{

// 这里改为：先混色偏，再曝光

return (tex2D(_MainTex, _MainTex_ST.xy * input.tex.xy + _MainTex_ST.zw) + _Color) * _Explosure

+ float4(0.21 * _HighLight, 0.72 * _HighLight, 0.07 *_HighLight, 1.0)

+ float4(_Brightness,_Brightness,_Brightness, 0.0);

}

ENDCG

}

}

}