Error In My Shader

Graphics Shaders & Materials
1

Hey guys.

I get “Unexpected token usertype” when I try to create an Input struct in my shader. Any clue why?

Error: “Shader error in ‘Custom/MyTriplanar-FirstPass’: Unexpected token usertype. Expected: identifier at line 65”

Shader "Custom/MyTriplanar-FirstPass" {
    Properties{
        // set by terrain engine
        [HideInInspector] _Control("Control (RGBA)", 2D) = "red" {}
    [HideInInspector] _Splat3("Layer 3 (A)", 2D) = "white" {}
    [HideInInspector] _Splat2("Layer 2 (B)", 2D) = "white" {}
    [HideInInspector] _Splat1("Layer 1 (G)", 2D) = "white" {}
    [HideInInspector] _Splat0("Layer 0 (R)", 2D) = "white" {}
    [HideInInspector] _Normal3("Normal 3 (A)", 2D) = "bump" {}
    [HideInInspector] _Normal2("Normal 2 (B)", 2D) = "bump" {}
    [HideInInspector] _Normal1("Normal 1 (G)", 2D) = "bump" {}
    [HideInInspector] _Normal0("Normal 0 (R)", 2D) = "bump" {}
    [HideInInspector][Gamma] _Metallic0("Metallic 0", Range(0.0, 1.0)) = 0.0
        [HideInInspector][Gamma] _Metallic1("Metallic 1", Range(0.0, 1.0)) = 0.0
        [HideInInspector][Gamma] _Metallic2("Metallic 2", Range(0.0, 1.0)) = 0.0
        [HideInInspector][Gamma] _Metallic3("Metallic 3", Range(0.0, 1.0)) = 0.0
        [HideInInspector] _Smoothness0("Smoothness 0", Range(0.0, 1.0)) = 1.0
        [HideInInspector] _Smoothness1("Smoothness 1", Range(0.0, 1.0)) = 1.0
        [HideInInspector] _Smoothness2("Smoothness 2", Range(0.0, 1.0)) = 1.0
        [HideInInspector] _Smoothness3("Smoothness 3", Range(0.0, 1.0)) = 1.0

        // used in fallback on old cards & base map
        [HideInInspector] _MainTex("BaseMap (RGB)", 2D) = "white" {}
    [HideInInspector] _Color("Main Color", Color) = (1,1,1,1)
    }

        SubShader{
        Tags{
        "Queue" = "Geometry-100"
        "RenderType" = "Opaque"
    }

        CGPROGRAM
#pragma surface surf Standard vertex:SplatmapVert finalcolor:SplatmapFinalColor finalgbuffer:SplatmapFinalGBuffer fullforwardshadows
#pragma multi_compile_fog
#pragma target 3.0
        // needs more than 8 texcoords
#pragma exclude_renderers gles psp2
#include "UnityPBSLighting.cginc"

#pragma multi_compile __ _TERRAIN_NORMAL_MAP
#if defined(SHADER_API_D3D9) && defined(SHADOWS_SCREEN) && defined(LIGHTMAP_ON) && defined(DIRLIGHTMAP_COMBINED) && defined(DYNAMICLIGHTMAP_ON) && defined(SHADOWS_SHADOWMASK) && defined(_TERRAIN_NORMAL_MAP) && defined(UNITY_SPECCUBE_BLENDING)
        // TODO : On d3d9 17 samplers would be used when : defined(SHADOWS_SCREEN) && defined(LIGHTMAP_ON) && defined(DIRLIGHTMAP_COMBINED) && defined(DYNAMICLIGHTMAP_ON) && defined(SHADOWS_SHADOWMASK) && defined(_TERRAIN_NORMAL_MAP) && defined(UNITY_SPECCUBE_BLENDING)
        // In that case it would be probably acceptable to undef UNITY_SPECCUBE_BLENDING however at the moment (10/2/2016) we can't undef UNITY_SPECCUBE_BLENDING or other platform defines. CGINCLUDE being added after "Lighting.cginc".
        // For now, remove _TERRAIN_NORMAL_MAP in this case.
#undef _TERRAIN_NORMAL_MAP
#define DONT_USE_TERRAIN_NORMAL_MAP // use it to initialize o.Normal to (0,0,1) because the surface shader analysis still see this shader writes to per-pixel normal.
#endif

#define TERRAIN_STANDARD_SHADER
#define TERRAIN_SURFACE_OUTPUT SurfaceOutputStandard
#include "TerrainSplatmapCommon.cginc"

        half _Metallic0;
    half _Metallic1;
    half _Metallic2;
    half _Metallic3;

    half _Smoothness0;
    half _Smoothness1;
    half _Smoothness2;
    half _Smoothness3;

    // Surface shader input structure
    struct Input {
        float3 worldPos;
        float3 worldNormal;
    };

    void surf(Input IN, inout SurfaceOutputStandard o) {
        half4 splat_control;
        half weight;
        fixed4 mixedDiffuse;
        half4 defaultSmoothness = half4(_Smoothness0, _Smoothness1, _Smoothness2, _Smoothness3);
#ifdef DONT_USE_TERRAIN_NORMAL_MAP
        o.Normal = fixed3(0, 0, 1);
#endif
        SplatmapMix(IN, defaultSmoothness, splat_control, weight, mixedDiffuse, o.Normal);
        o.Albedo = mixedDiffuse.rgb;
        o.Alpha = weight;
        o.Smoothness = mixedDiffuse.a;
        o.Metallic = dot(splat_control, half4(_Metallic0, _Metallic1, _Metallic2, _Metallic3));
    }
    ENDCG
    }

        Dependency "AddPassShader" = "Triplanar-AddPass"
        Dependency "BaseMapShader" = "MyTriplanar-Base"

        Fallback "Diffuse"
}
2

It seems “Input” is a keyword. Try something like “surface_in” instead.

There are some pretty bad cases of this in shaders with pretty random error messages. You sometimes get up to a level you want to put “my” in front of every variable name like in a programming for dummies book just to make sure you’re not hitting any keywords.

1 Like
3

I got this error because one of my #includes already include an struct called Input - check your includes to make sure you’re not making a duplicate.

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