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Other Packages / Re: Tasharen Fog of War

« on: May 19, 2015, 03:05:31 AM »

Hi
Shader compile error!
Please take a look at what the problem of this code.

Shader "Fog of War/4TexturesDiffuseFastFow"
{
   Properties
   {
      _Color ("Main Color", Color) = (1,1,1,1)
      _Layer1 ("Layer1 (RGB)", 2D) = "white" {}
      _Layer2 ("Layer2 (RGB)", 2D) = "white" {}
      _Layer3 ("Layer3 (RGB)", 2D) = "white" {}
      _Layer4 ("Layer4 (RGB)", 2D) = "white" {}
      _MainTex ("Mask (RGB)", 2D)  = "white" {}   
   }

   SubShader
   {
      Tags
      {
            "SplatCount"      = "4"
            "Queue"         = "Geometry-100"
            "RenderType"      = "Opaque"
      }                   

      CGPROGRAM
      #pragma surface surf Lambert exclude_path:prepass   noforwardadd halfasview novertexlights approxview   
   
      sampler2D _MainTex;
      sampler2D _Layer1, _Layer2, _Layer3,_Layer4;
      fixed4    _Color;

      sampler2D _FOWTex0, _FOWTex1;
      uniform float4    _FOWParams;
      uniform half4     _FOWUnexplored;
      uniform half4     _FOWExplored;      

      struct Input
      {
         float2 uv_MainTex : TEXCOORD0;
         float2 uv_Layer1  : TEXCOORD1;
         float2 uv_Layer2  : TEXCOORD2;
         float2 uv_Layer3  : TEXCOORD3;
         float2 uv_Layer4  : TEXCOORD4;

         float2 fog        : TEXCOORD5;
      };   

      void vert (inout appdata_full v, out Input o)
      {
         UNITY_INITIALIZE_OUTPUT(Input, o);
         
         float4 worldPos = mul (_Object2World, v.vertex);
         o.fog.xy = worldPos.xz * _FOWParams.z + _FOWParams.xy;
      }
                                            
      void surf (Input IN, inout SurfaceOutput o)
      {     
         fixed4 Mask = tex2D(_MainTex, IN.uv_MainTex);
         half4 col;
         col  = Mask.r * tex2D (_Layer1, IN.uv_Layer1);
         col += Mask.g * tex2D (_Layer2, IN.uv_Layer2);
         col += Mask.b * tex2D (_Layer3, IN.uv_Layer3);
         col += Mask.a * tex2D (_Layer4, IN.uv_Layer4);

         half4 fog = lerp(tex2D(_FOWTex0, IN.fog), tex2D(_FOWTex1, IN.fog), _FOWParams.w);

         //col = lerp(lerp(col * _FOWUnexplored, col * _FOWExplored, fog.g), col, fog.r);   <-- this code problem

         o.Albedo = col.rgb;
         o.Alpha  = col.a;
      
      }         
   
      ENDCG
   }
}