113 lines
4.2 KiB
Plaintext
113 lines
4.2 KiB
Plaintext
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/*
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一个水的效果,这个主要用于大海等比较大的水域.并且海水的透明度也是根据视线改变.
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这个需要的透明度也需要使用顶点颜色来处理
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*/
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Shader "Ares/Water/Water01"
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{
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Properties
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{
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_Color("_Color",Color) = (0,0.05,0.03,1)
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_MainTex ("Base Texture", 2D) = "white" {}
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_BumpMap("Normal Map",2D) = "black"{}
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_EnvCube("Cube Map", Cube) = "grey" {}
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_EnvPower("Cube Map Power", Range(-2,2)) = 1
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_WaterSpeed("WaterSpeed",Vector) = (0,0.02,0,-0.02)
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_Refraction("Refraction",Range(0,2)) = 0.6
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_FresnelPower("FresnelPower",float) = 0
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_Alpha ( "Transparent", Range( 0, 1 ) ) = 1
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}
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SubShader
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{
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Tags { "Queue" = "Transparent" "GonbestBloomType"="BloomMask"}
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LOD 100
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Pass
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{
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ZWrite Off
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Blend SrcAlpha OneMinusSrcAlpha,Zero OneMinusSrcAlpha
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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// make fog work
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#pragma multi_compile_fog
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#include "UnityCG.cginc"
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#include "../Gonbest/Include/Base/MathCG.cginc"
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#include "../Gonbest/Include/Base/NormalCG.cginc"
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struct appdata
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{
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float4 vertex : POSITION;
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float4 uv : TEXCOORD0;
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float4 color:COLOR;
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float3 normal:NORMAL;
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float4 tangent:TANGENT;
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};
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struct v2f
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{
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float4 uv : TEXCOORD0;
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UNITY_FOG_COORDS(1)
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float4 vertex : SV_POSITION;
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float4 wn:TEXCOORD2;
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float4 wt:TEXCOORD3;
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float4 wb:TEXCOORD4;
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float4 vcolor:TEXCOORD5;
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};
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sampler2D _MainTex;
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float4 _MainTex_ST;
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uniform sampler2D _BumpMap;
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float4 _BumpMap_ST;
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uniform samplerCUBE _EnvCube;
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uniform float4 _WaterSpeed;
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uniform float _Refraction;
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uniform float4 _Color;
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uniform float _FresnelPower;
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uniform float _Alpha;
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uniform float _EnvPower;
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v2f vert (appdata v)
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{
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v2f o;
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o.vertex = UnityObjectToClipPos(v.vertex);
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o.uv = v.uv;
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float3 wp = mul(unity_ObjectToWorld,v.vertex);
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o.wn.xyz = GBNormalizeSafe(mul(float4(v.normal,0),unity_WorldToObject).xyz);
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o.wt.xyz = GBNormalizeSafe(mul(unity_ObjectToWorld,float4(v.tangent.xyz,1)).xyz);
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o.wb.xyz = cross(o.wn.xyz,o.wt.xyz) * v.tangent.w;
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o.wt.w = wp.x;
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o.wb.w = wp.y;
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o.wn.w = wp.z;
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o.vcolor = v.color;
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UNITY_TRANSFER_FOG(o,o.vertex);
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return o;
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}
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fixed4 frag (v2f i) : SV_Target
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{
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float4 uv = (_Time.yyyy * _WaterSpeed) + TRANSFORM_TEX(i.uv,_BumpMap).xyxy;
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float3 TN1 = GBUnpackScaleNormal(tex2D(_BumpMap, uv.zw),1);
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float3 TN2 = GBUnpackScaleNormal(tex2D(_BumpMap, uv.xy),1);
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float3 TN = GBNormalizeSafe(GBBlendNormals(TN1,TN2));
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float3 N = GBNormalizeSafe(TN.x * i.wt.xyz + TN.y*i.wb.xyz + TN.z*i.wn.xyz);
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float3 V = GBNormalizeSafe( _WorldSpaceCameraPos.xyz -float3(i.wt.w,i.wb.w,i.wn.w));
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float TNV = dot(V,N); //dot(V,TN);
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float3 R = GBNormalizeSafe(reflect(-V,N));
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float3 envColor = texCUBE(_EnvCube, R).xyz;
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float3 RefrColor= lerp(envColor,_Color,_Refraction);
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float F = pow((1-TNV),_FresnelPower);
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float4 col = float4(0,0,0,0);
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col.xyz = lerp(RefrColor,_Color.xyz,TNV) + envColor * F;
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float3 mainColor = tex2D(_MainTex, TRANSFORM_TEX(i.uv,_MainTex)).xyz;
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col.xyz = (mainColor * col.xyz) + envColor * _EnvPower;
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col.a = (1 - (1-_Alpha) * i.vcolor.a) * F;
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UNITY_APPLY_FOG(i.fogCoord, col);
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return col;
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}
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ENDCG
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}
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}
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}
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