物体出身效果

Posted 2020-10-11

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　　先看下效果

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shader如下：

Shader "Esfog/Dissolve"   
{  
    Properties   
    {  
        _MainTex ("Base (RGB)", 2D) = "white" {}  
        _MainColor("MainColor",color) = (1,1,1,1)
        _NoiseTex ("NoiseTex (R)",2D) = "white"{}  
        _DissolveSpeed ("DissolveSpeed (Second)",Range(-0.77,-0.25)) = 0  
        _tex2("tex2",2D) = "white"{}
        _tex2Light("tex2Light",Range(0,5)) =1
        _tex2Color("tex2Color",color) = (1,1,1,1)
        _alpha("alpha",Range(0,1)) = 0
         _Bump ("Bump", 2D) = "bump" {}/////
        _SpecularInten ("强度", Range(0, 10)) = 10/////
        _Scale ("范围", Range(0, 1)) = 0.1/////
        _SpecularColor("SpecularColor",Color) = (1,1,1,1)/////
       
    }  
    SubShader   
    {  

    Pass  
        {  
          Tags { "queue"="Transparent" "LightMode" = "ForwardBase"}  
          //ZWrite Off
         Blend SrcAlpha OneMinusSrcAlpha
            CGPROGRAM  
            #pragma vertex vert  
            #pragma fragment frag  
            #include "UnityCG.cginc" 
            #define UNITY_PASS_FORWARDBASE
            #include "UnityCG.cginc"
            #include "AutoLight.cginc"
            #pragma multi_compile_fwdbase_fullshadows
            #include "Lighting.cginc"
            #pragma target 3.0
               
            struct v2f
             {
                float4  pos : SV_POSITION;
                float2  uv : TEXCOORD0;
                float3  vertex:TEXCOORD1;
                float4 posWorld : TEXCOORD2;
                float3 normal : TEXCOORD3;
                float3 tangentDir : TEXCOORD4;
                float3 bitangentDir : TEXCOORD5;
                 LIGHTING_COORDS(6,7)
             } ;

            struct VertexInput {
                float4 vertex : POSITION;
                float3 normal : NORMAL;
                float4 tangent : TANGENT;/////
                float2 uv : TEXCOORD0;
            };

            sampler2D _MainTex;  
            float4 _MainTex_ST;
            sampler2D _NoiseTex;  
            float _DissolveSpeed; 
            float4 _MainColor;
            float _alpha;

             sampler2D _Bump; /////
             float4 _Bump_ST;/////
             float _SpecularInten;/////
             float _Scale;/////
             float4 _SpecularColor;/////

            v2f vert (VertexInput v)
            {
                v2f o;
                o.pos = UnityObjectToClipPos (v.vertex);
                o.uv = TRANSFORM_TEX (v.uv, _MainTex);
                o.vertex = v.vertex;
                o.normal =( UnityObjectToWorldNormal(v.normal));
                o.tangentDir = normalize( mul( unity_ObjectToWorld, float4( v.tangent.xyz, 0.0 ) ).xyz );/////切线方向
                o.bitangentDir = normalize(cross(o.normal, o.tangentDir) * v.tangent.w);/////切线与法线的差积，双切线
                o.posWorld = mul(unity_ObjectToWorld, v.vertex);
                TRANSFER_VERTEX_TO_FRAGMENT(o)
                return o;
            } 
            float4 frag(v2f i):COLOR  
            {  

            float3 nVert =i.normal;
                float3x3 tangentTransform = float3x3( i.tangentDir, i.bitangentDir, nVert);/////
                float3 BumpMap = UnpackNormal(tex2D(_Bump,i.uv));
                float3 N = normalize(mul( BumpMap.rgb, tangentTransform )); 
                float3 V = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz); 
                float3 L = normalize(_WorldSpaceLightPos0.xyz);
                float3 speL = normalize(V+L); 
                float atten = LIGHT_ATTENUATION(i);
                float Gloss = exp2( _Scale * 10.0+1.0);
                float NdotSpeL = saturate(dot (speL,N)); 
                float4 col =tex2D(_MainTex,i.uv) *_MainColor;
                float3 specular0 = atten * _LightColor0.xyz * pow(NdotSpeL,Gloss) * _SpecularColor * _SpecularInten*col.a;

                float NdotL = saturate(dot( N, L )); 
                 
                 float2 uv = i.vertex.yz;
                 
                 uv.y -=_DissolveSpeed;
                 uv.x -= _DissolveSpeed;
                float noiseValue = tex2D(_NoiseTex,uv).r;              
                if(noiseValue <0.2)  
                {  
                    discard;  
                }    
                col.rgb = col.rgb *(NdotL *_LightColor0.xyz * atten + UNITY_LIGHTMODEL_AMBIENT.rgb) +specular0;  
                col.a = _alpha;                            
                return col;  
            }   
            ENDCG  
        }  


 Pass  
        {  
          Tags { "queue"="Transparent" "LightMode" = "ForwardAdd"}  
          ZWrite On
         Blend One One
            CGPROGRAM  
            #pragma vertex vert  
            #pragma fragment frag  
            #include "UnityCG.cginc" 
            #define UNITY_PASS_FORWARDBASE
            #include "UnityCG.cginc"
            #include "AutoLight.cginc"
            #pragma multi_compile_fwdbase_fullshadows
            #include "Lighting.cginc"
            #pragma target 3.0
               
            struct v2f
             {
                float4  pos : SV_POSITION;
                float2  uv : TEXCOORD0;
                float3  vertex:TEXCOORD1;
                float4 posWorld : TEXCOORD2;
                float3 normal : TEXCOORD3;
                float3 tangentDir : TEXCOORD4;
                float3 bitangentDir : TEXCOORD5;
                 LIGHTING_COORDS(6,7)
             } ;

            struct VertexInput {
                float4 vertex : POSITION;
                float3 normal : NORMAL;
                float4 tangent : TANGENT;/////
                float2 uv : TEXCOORD0;
            };

            sampler2D _MainTex;  
            float4 _MainTex_ST;
            sampler2D _NoiseTex;  
            float _DissolveSpeed; 
            float4 _MainColor;
            float _alpha;

             sampler2D _Bump; /////
             float4 _Bump_ST;/////
             float _SpecularInten;/////
             float _Scale;/////
             float4 _SpecularColor;/////

            v2f vert (VertexInput v)
            {
                v2f o;
                o.pos = UnityObjectToClipPos (v.vertex);
                o.uv = TRANSFORM_TEX (v.uv, _MainTex);
                o.vertex = v.vertex;
                o.normal =( UnityObjectToWorldNormal(v.normal));
                o.tangentDir = normalize( mul( unity_ObjectToWorld, float4( v.tangent.xyz, 0.0 ) ).xyz );/////切线方向
                o.bitangentDir = normalize(cross(o.normal, o.tangentDir) * v.tangent.w);/////切线与法线的差积，双切线
                o.posWorld = mul(unity_ObjectToWorld, v.vertex);
                TRANSFER_VERTEX_TO_FRAGMENT(o)
                return o;

            }
              
            float4 frag(v2f i):COLOR  
            {  

            float3 nVert =i.normal;
                float3x3 tangentTransform = float3x3( i.tangentDir, i.bitangentDir, nVert);/////
                float3 BumpMap = UnpackNormal(tex2D(_Bump,i.uv));
                float3 N = normalize(mul( BumpMap.rgb, tangentTransform )); 
                float3 V = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz); 
                float3 L = normalize (lerp(_WorldSpaceLightPos0.xyz , _WorldSpaceLightPos0.xyz - i.posWorld.xyz , _WorldSpaceLightPos0.w));
                float3 speL = normalize(V+L); 
                float atten = LIGHT_ATTENUATION(i);
                float Gloss = exp2( _Scale * 10.0+1.0);
                float NdotSpeL = saturate(dot (speL,N)); 
                float4 col =tex2D(_MainTex,i.uv) *_MainColor;
                float3 specular0 = atten * _LightColor0.xyz * pow(NdotSpeL,Gloss) * _SpecularColor * _SpecularInten*col.a;
                float NdotL = saturate(dot( N, L ));       
                 float2 uv = i.vertex.yz;
                 uv.y -=_DissolveSpeed;
                 uv.x -= _DissolveSpeed;
                float noiseValue = tex2D(_NoiseTex,uv).r;              
                if(noiseValue <0.2)  
                {  
                    discard;  
                }   
                col.rgb = col.rgb *(NdotL *_LightColor0.xyz * atten) +specular0;  
                col.a = _alpha;                             
                return col;  
            }    
            ENDCG  
        }  






    Pass  
        {  
         Blend One One
            CGPROGRAM  
            #pragma vertex vert  
            #pragma fragment frag  
            #include "UnityCG.cginc"  
               
            struct v2f
             {
                float4  pos : SV_POSITION;
                float3  vertex:TEXCOORD0;
                float3 normal:TEXCOORD1;
             } ;

            sampler2D _tex2;  
            float _tex2Light;
            float4 _tex2Color;
 
            float _DissolveSpeed;  
                struct VertexInput {
                float4 vertex : POSITION;
                float3 normal : NORMAL;
                float4 tangent : TANGENT;/////
                float2 uv : TEXCOORD0;
            };

            v2f vert (VertexInput v)
            {
                v2f o;
                o.pos = UnityObjectToClipPos (v.vertex);
                o.vertex = v.vertex;
                o.normal = v.normal;
                return o;

            }
              
            float4 frag(v2f i):COLOR  
            {  
                half3 blend = abs(i.normal);
                blend /= dot(blend,1.0);



                 float3 uv = i.vertex.xyz;

                 uv.z -=_DissolveSpeed;
                 uv.x -=_DissolveSpeed;
                 uv.y -=_DissolveSpeed;
         
         
                fixed4 yz = tex2D (_tex2,uv.yz); 
                fixed4 xz = tex2D (_tex2,uv.xz);
                
                float4 texColor=  yz*blend.x + xz*blend.y;    
                texColor= texColor * _tex2Light * _tex2Color;                       
                return texColor;  
            }  
              
            ENDCG  
        } 

    }   
      
    FallBack Off  
}