Shader "Engine/GridOverlay"
{
  Properties
  {
    _MainTex ("Tile Texture", 2D) = "white" {}
    _ColorsTex ("Colors Texture", 2D) = "white" {}
    _GridU ("Grid Size U", float) = 0
    _GridV ("Grid Size V", float) = 0
  }
  SubShader
  {
    Tags
    { 
      "IGNOREPROJECTOR" = "true"
      "PreviewType" = "Plane"
      "QUEUE" = "Transparent"
      "RenderType" = "Transparent"
    }
    Pass // ind: 1, name: 
    {
      Tags
      { 
        "IGNOREPROJECTOR" = "true"
        "PreviewType" = "Plane"
        "QUEUE" = "Transparent"
        "RenderType" = "Transparent"
      }
      ZWrite Off
      Cull Off
      Fog
      { 
        Mode  Off
      } 
      Blend SrcAlpha OneMinusSrcAlpha
      // m_ProgramMask = 6
      CGPROGRAM
      //#pragma target 4.0
      
      #pragma vertex vert
      #pragma fragment frag
      
      #include "UnityCG.cginc"
      
      
      #define CODE_BLOCK_VERTEX
      //uniform float4x4 unity_ObjectToWorld;
      //uniform float4x4 unity_MatrixVP;
      uniform sampler2D _MainTex;
      uniform sampler2D _ColorsTex;
      uniform float _GridU;
      uniform float _GridV;
      struct appdata_t
      {
          float4 vertex :POSITION;
          float4 texcoord :TEXCOORD0;
      };
      
      struct OUT_Data_Vert
      {
          float2 xlv_TEXCOORD0 :TEXCOORD0;
          float4 vertex :SV_POSITION;
      };
      
      struct v2f
      {
          float2 xlv_TEXCOORD0 :TEXCOORD0;
      };
      
      struct OUT_Data_Frag
      {
          float4 color :SV_Target0;
      };
      
      OUT_Data_Vert vert(appdata_t in_v)
      {
          OUT_Data_Vert out_v;
          float4 tmpvar_1;
          tmpvar_1.w = 1;
          tmpvar_1.xyz = in_v.vertex.xyz;
          out_v.vertex = mul(unity_MatrixVP, mul(unity_ObjectToWorld, tmpvar_1));
          out_v.xlv_TEXCOORD0 = in_v.texcoord.xy;
          return out_v;
      }
      
      #define CODE_BLOCK_FRAGMENT
      OUT_Data_Frag frag(v2f in_f)
      {
          OUT_Data_Frag out_f;
          float4 tmpvar_1;
          float2 cc_2;
          float2 tc_3;
          float2 p_4;
          float2 gi_5;
          float tmpvar_6;
          tmpvar_6 = (in_f.xlv_TEXCOORD0.x * _GridU);
          gi_5.x = floor(tmpvar_6);
          float tmpvar_7;
          tmpvar_7 = (in_f.xlv_TEXCOORD0.y * _GridV);
          gi_5.y = floor(tmpvar_7);
          p_4.x = (tmpvar_6 - gi_5.x);
          p_4.y = (tmpvar_7 - gi_5.y);
          tc_3.x = (0.5 + ((p_4.x - p_4.y) * 0.5));
          tc_3.y = ((p_4.x + p_4.y) * 0.5);
          cc_2.x = ((gi_5.x + 0.5) / _GridU);
          cc_2.y = ((gi_5.y + 0.5) / _GridV);
          float4 tmpvar_8;
          tmpvar_8 = tex2D(_MainTex, tc_3);
          float4 tmpvar_9;
          tmpvar_9 = tex2D(_ColorsTex, cc_2);
          tmpvar_1 = (tmpvar_8 * tmpvar_9);
          out_f.color = tmpvar_1;
          return out_f;
      }
      
      
      ENDCG
      
    } // end phase
  }
  FallBack Off
}