Error when trying to use WorldReflectionVector while manipulating normals

Unity Engine
1

I’m following a shader tutorial and am hitting a confusing error. I’m planning to contact that tutorial author as well but in the meantime figured I should try looking it up first, and the closest I came was this old forum thread . Perhaps the error I’m getting is another bug? Specifically, here’s the code for my shader:

Shader "Holistic/BumpedEnv" {

    Properties {
        _myDiffuse ("Diffuse Texture", 2D) = "white" {}
        _myBump ("Bump Texture", 2D) = "bump" {}
        _myCube ("Cube Map", Cube) = "white" {}
    }
  
    SubShader {
        CGPROGRAM
        #pragma surface surf Lambert
      
        sampler2D _myDiffuse;
        sampler2D _myBump;
        samplerCUBE _myCube;
      
        struct Input {
            float2 uv_myDiffuse;
            float2 uv_myBump;
            float3 worldRefl;
        };
      
        void surf (Input IN, inout SurfaceOutput o) {
            o.Albedo = tex2D(_myDiffuse, IN.uv_myDiffuse).rgb;
            o.Normal = UnpackNormal(tex2D(_myBump, IN.uv_myBump));
            o.Emission = texCUBE(_myCube, IN.worldRefl).rgb;
        }
        ENDCG
    }
  
    FallBack "Diffuse"
}

When I comment out either the o.Normal line or o.Emission then it works, but when I try to do both at once there’s this error:

Am I just doing something wrong?

2

What the compiler says: add INTERNAL_DATA after your “float3 worldRefl;” declaration.

1 Like
3

Thanks. I posted this a little too soon because the tutorial goes on to say “this code caused an error though, so we need to blah” Warn the learner beforehand, bad writing!

4

I’m getting the same error even though INTERNAL_DATA is already in the input structure; and a nearly identical shader doesn’t have that error.