how to get spot-/point-/..lights working with vertex displacement shader?

hey everyone,

question above. i can't figure out how to do this.

this is how far i am:

              CGPROGRAM
          #pragma surface surf LambertDoubleSided vertex:vert addshadow alphatest:_Cutoff 
          
          uniform fixed4 _Color;
          
          struct Input
          {
              float2 uv_MainTex;
          };
         
          void vert(inout appdata_full v)
          {
              v.vertex.x += sin(_Time.y)/10;
          }
          void surf (Input IN, inout SurfaceOutput o) {
             
              o.Albedo = _Color;
          }
          
          fixed4 LightingLambertDoubleSided (SurfaceOutput s, fixed3 lightDir, fixed atten)
          {
              fixed diff = saturate ( dot (s.Normal, lightDir));
      
              fixed4 c = fixed4 (1);
              c.rgb =  (diff * atten);
              return c;
          }
  
         ENDCG

sumaccamus

Edit: Got it. Set Rendering Path to Deferred in Playersettings.