v2f vert (appdata_img v)

 {

     v2f o;

     o.pos = mul(UNITY_MATRIX_MVP, v.vertex);

     o.uv = v.texcoord.xy;

     return o;

 }

 float4 frag (v2f i) : COLOR

 {

     float2 texCoord = i.uv;

     float2 dir = 0.5 – texCoord;

     float dist = length(dir);

     dir /= dist;

     float4 color = tex2D(_MainTex, texCoord);

     float4 sum = color;

     float samples[] = float[](-0.08,-0.05,-0.03,-0.02,-0.01,0.01,0.02,0.03,0.05,0.08);

     for (int i = ; i < ; ++i)

     {

         sum += tex2D(_MainTex, texCoord + dir*samples[i]*fSampleDist);

     }

     sum /= 11.0;

     float t = saturate(dist * fSampleStrength);

     return lerp(color, sum, t);

 }