Modify this shader

this shader is not working in ios development ??

Shader "Colour Balanced Anaglyph Parametric" {
Properties {
   _LeftTex ("Left (RGB)", RECT) = "white" {}
   _RightTex ("Right (RGB)", RECT) = "white" {}
   _Balance_Left_R 		("Balance Left R", Vector) = (0, 0, 0, 0)
   _Balance_Left_G 		("Balance Left G", Vector) = (0, 0, 0, 0)
   _Balance_Left_B 		("Balance Left B", Vector) = (0, 0, 0, 0)
   
   _Balance_Right_R 	("Balance Right R", Vector) = (0, 0, 0, 0)
   _Balance_Right_G		("Balance Right G", Vector) = (0, 0, 0, 0)
   _Balance_Right_B		("Balance Right B", Vector) = (0, 0, 0, 0)
}

SubShader {
   Pass {
      ZTest Always Cull Off ZWrite Off
      Fog { Mode off }

      CGPROGRAM
      #pragma vertex vert
      #pragma fragment frag
      #pragma fragmentoption ARB_precision_hint_fastest
      #include "UnityCG.cginc"
      
      uniform sampler2D _LeftTex;
      uniform sampler2D _RightTex;
      
      uniform float4 _Balance_Left_R;
      uniform float4 _Balance_Left_G;
      uniform float4 _Balance_Left_B;
      
      uniform float4 _Balance_Right_R;
      uniform float4 _Balance_Right_G;
      uniform float4 _Balance_Right_B;
      
      struct v2f {
         float4 pos : POSITION;
         float2 uv : TEXCOORD0;
      };
      
      v2f vert( appdata_img v )
      {
         v2f o;
         o.pos = mul (UNITY_MATRIX_MVP, v.vertex);
         float2 uv = MultiplyUV( UNITY_MATRIX_TEXTURE0, v.texcoord );
         o.uv = uv;
         return o;
      }
      
      half4 frag (v2f i) : COLOR
      {
         float ra, ga, ba, r1, g1, b1, r2, g2, b2;
         float4 texL = tex2D(_LeftTex, i.uv);
         float4 texR = tex2D(_RightTex, i.uv);
         float4 texRGB;
         
         r1	=	texL.r * _Balance_Left_R[0] + texL.g * _Balance_Left_R[1] + texL.b * _Balance_Left_R[2];
         g1	=	texL.r * _Balance_Left_G[0] + texL.g * _Balance_Left_G[1] + texL.b * _Balance_Left_G[2];
         b1	=	texL.r * _Balance_Left_B[0] + texL.g * _Balance_Left_B[1] + texL.b * _Balance_Left_B[2];
         
         r2	=	texR.r * _Balance_Right_R[0] + texR.g * _Balance_Right_R[1] + texR.b * _Balance_Right_R[2];
         g2	=	texR.r * _Balance_Right_G[0] + texR.g * _Balance_Right_G[1] + texR.b * _Balance_Right_G[2];
         b2	=	texR.r * _Balance_Right_B[0] + texR.g * _Balance_Right_B[1] + texR.b * _Balance_Right_B[2];
        
         
         texRGB = float4(r1+r2,g1+g2,b1+b2,1);
         return texRGB;
      }
      ENDCG
   }
}   
   Fallback off
}

how to make working in ios development… can anyone help??

Consider me completely lazy, but what exactly do not work? Can’t be compiled (unlikely)? Different from what you see in editor (screenshots)? Or what