NormalShaderTest

Shader "TestDebugShader" {
    SubShader{
       Pass {
          CGPROGRAM

          #pragma vertex vert
          #pragma fragment frag

          struct vertexInput {
             float4 vertex : POSITION;
             float4 tangent : TANGENT;
             float3 normal : NORMAL;
             fixed4 color : COLOR;
          };
          struct vertexOutput {
             float4 pos : SV_POSITION;
             float4 col : TEXCOORD0;
          };

          vertexOutput vert(vertexInput input)
          {
             vertexOutput output;

             output.pos = UnityObjectToClipPos(input.vertex);

             if (input.normal.x < 0)
                output.col = float4(1.0, 0.0, 0.0, 1.0);
             else
                 output.col = float4(0.0, 1.0, 0.0, 1.0);

             return output;
          }

          float4 frag(vertexOutput input) : COLOR
          {
             return input.col;
          }

          ENDCG
       }
    }
}