Shader "Shaderinos/Waverino" {
  Properties {
    _Wavelength ("Wavelength", Range(0.0, 3.0)) = 1.0
    _Amplitude ("Amplitude", Range(0.0, 10.0)) = 1.0
    _Offset ("Offset", Range(0, 6.28318530718)) = 0
  }

  SubShader {
    Pass
    {
      CGPROGRAM
      #pragma vertex vert
      #pragma fragment frag

      #include "UnityCG.cginc"

      float _Wavelength;
      float _Amplitude;
      float _Offset;

      v2f_img vert(appdata_full IN) {
        v2f_img OUT;

        IN.vertex.z -= sin(_Wavelength * IN.vertex.y + _Offset) * _Amplitude;

        OUT.pos   = mul(UNITY_MATRIX_MVP, IN.vertex);
        OUT.uv    = IN.texcoord;

        return OUT;
      }

      float4 frag(v2f_img IN) : COLOR { return float4(0.0, 0.0, 0.0, 0.0); }
      ENDCG
    }
  }
  Fallback off
}