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Normal mapping Surface Shader example in the Built-In Render Pipeline
Vertex modifier Surface Shader example in the Built-In Render Pipeline

Reflection Surface Shader examples in the Built-In Render Pipeline

Here’s a ShaderA program that runs on the GPU. More info
See in Glossary that does cubemapped reflection using built-in worldRefl input. It’s very similar to built-in Reflective/Diffuse Shader:

  Shader "Example/WorldRefl" {
    Properties {
      _MainTex ("Texture", 2D) = "white" {}
      _Cube ("Cubemap", CUBE) = "" {}
    }
    SubShader {
      Tags { "RenderType" = "Opaque" }
      CGPROGRAM
      #pragma surface surf Lambert
      struct Input {
          float2 uv_MainTex;
          float3 worldRefl;
      };
      sampler2D _MainTex;
      samplerCUBE _Cube;
      void surf (Input IN, inout SurfaceOutput o) {
          o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb * 0.5;
          o.Emission = texCUBE (_Cube, IN.worldRefl).rgb;
      }
      ENDCG
    } 
    Fallback "Diffuse"
  }

Because it assigns the reflection color as Emission, we get a very shiny soldier:

Surface shader example that uses the world reflection texture as emission texture.
Surface shader example that uses the world reflection texture as emission texture.

If you want to do reflections that are affected by normal mapsA type of Bump Map texture that allows you to add surface detail such as bumps, grooves, and scratches to a model which catch the light as if they are represented by real geometry.
See in Glossary, it needs to be slightly more involved: INTERNAL_DATA needs to be added to the Input structure, and WorldReflectionVector function used to compute per-pixel reflection vector after you’ve written the Normal output.

  Shader "Example/WorldRefl Normalmap" {
    Properties {
      _MainTex ("Texture", 2D) = "white" {}
      _BumpMap ("Bumpmap", 2D) = "bump" {}
      _Cube ("Cubemap", CUBE) = "" {}
    }
    SubShader {
      Tags { "RenderType" = "Opaque" }
      CGPROGRAM
      #pragma surface surf Lambert
      struct Input {
          float2 uv_MainTex;
          float2 uv_BumpMap;
          float3 worldRefl;
          INTERNAL_DATA
      };
      sampler2D _MainTex;
      sampler2D _BumpMap;
      samplerCUBE _Cube;
      void surf (Input IN, inout SurfaceOutput o) {
          o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb * 0.5;
          o.Normal = UnpackNormal (tex2D (_BumpMap, IN.uv_BumpMap));
          o.Emission = texCUBE (_Cube, WorldReflectionVector (IN, o.Normal)).rgb;
      }
      ENDCG
    } 
    Fallback "Diffuse"
  }

Here’s a normal-mapped shiny soldier:

Surface shader example that uses the world reflection texture as emission texture and applies a normal texture to it.
Surface shader example that uses the world reflection texture as emission texture and applies a normal texture to it.

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Normal mapping Surface Shader example in the Built-In Render Pipeline
Vertex modifier Surface Shader example in the Built-In Render Pipeline
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