Error In My Shader

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"

Code (csharp):

1. Shader "Custom/MyTriplanar-FirstPass" {
2.     Properties{
3.         // set by terrain engine
4.         [HideInInspector] _Control("Control (RGBA)", 2D) = "red" {}
5.     [HideInInspector] _Splat3("Layer 3 (A)", 2D) = "white" {}
6.     [HideInInspector] _Splat2("Layer 2 (B)", 2D) = "white" {}
7.     [HideInInspector] _Splat1("Layer 1 (G)", 2D) = "white" {}
8.     [HideInInspector] _Splat0("Layer 0 (R)", 2D) = "white" {}
9.     [HideInInspector] _Normal3("Normal 3 (A)", 2D) = "bump" {}
10.     [HideInInspector] _Normal2("Normal 2 (B)", 2D) = "bump" {}
11.     [HideInInspector] _Normal1("Normal 1 (G)", 2D) = "bump" {}
12.     [HideInInspector] _Normal0("Normal 0 (R)", 2D) = "bump" {}
13.     [HideInInspector][Gamma] _Metallic0("Metallic 0", Range(0.0, 1.0)) = 0.0
14.         [HideInInspector][Gamma] _Metallic1("Metallic 1", Range(0.0, 1.0)) = 0.0
15.         [HideInInspector][Gamma] _Metallic2("Metallic 2", Range(0.0, 1.0)) = 0.0
16.         [HideInInspector][Gamma] _Metallic3("Metallic 3", Range(0.0, 1.0)) = 0.0
17.         [HideInInspector] _Smoothness0("Smoothness 0", Range(0.0, 1.0)) = 1.0
18.         [HideInInspector] _Smoothness1("Smoothness 1", Range(0.0, 1.0)) = 1.0
19.         [HideInInspector] _Smoothness2("Smoothness 2", Range(0.0, 1.0)) = 1.0
20.         [HideInInspector] _Smoothness3("Smoothness 3", Range(0.0, 1.0)) = 1.0
21.  
22.         // used in fallback on old cards & base map
23.         [HideInInspector] _MainTex("BaseMap (RGB)", 2D) = "white" {}
24.     [HideInInspector] _Color("Main Color", Color) = (1,1,1,1)
25.     }
26.  
27.         SubShader{
28.         Tags{
29.         "Queue" = "Geometry-100"
30.         "RenderType" = "Opaque"
31.     }
32.  
33.         CGPROGRAM
34. #pragma surface surf Standard vertex:SplatmapVert finalcolor:SplatmapFinalColor finalgbuffer:SplatmapFinalGBuffer fullforwardshadows
35. #pragma multi_compile_fog
36. #pragma target 3.0
37.         // needs more than 8 texcoords
38. #pragma exclude_renderers gles psp2
39. #include "UnityPBSLighting.cginc"
40.  
41. #pragma multi_compile __ _TERRAIN_NORMAL_MAP
42. #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)
43.         // 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)
44.         // 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".
45.         // For now, remove _TERRAIN_NORMAL_MAP in this case.
46. #undef _TERRAIN_NORMAL_MAP
47. #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.
48. #endif
49.  
50. #define TERRAIN_STANDARD_SHADER
51. #define TERRAIN_SURFACE_OUTPUT SurfaceOutputStandard
52. #include "TerrainSplatmapCommon.cginc"
53.  
54.         half _Metallic0;
55.     half _Metallic1;
56.     half _Metallic2;
57.     half _Metallic3;
58.  
59.     half _Smoothness0;
60.     half _Smoothness1;
61.     half _Smoothness2;
62.     half _Smoothness3;
63.  
64.     // Surface shader input structure
65.     struct Input {
66.         float3 worldPos;
67.         float3 worldNormal;
68.     };
69.  
70.     void surf(Input IN, inout SurfaceOutputStandard o) {
71.         half4 splat_control;
72.         half weight;
73.         fixed4 mixedDiffuse;
74.         half4 defaultSmoothness = half4(_Smoothness0, _Smoothness1, _Smoothness2, _Smoothness3);
75. #ifdef DONT_USE_TERRAIN_NORMAL_MAP
76.         o.Normal = fixed3(0, 0, 1);
77. #endif
78.         SplatmapMix(IN, defaultSmoothness, splat_control, weight, mixedDiffuse, o.Normal);
79.         o.Albedo = mixedDiffuse.rgb;
80.         o.Alpha = weight;
81.         o.Smoothness = mixedDiffuse.a;
82.         o.Metallic = dot(splat_control, half4(_Metallic0, _Metallic1, _Metallic2, _Metallic3));
83.     }
84.     ENDCG
85.     }
86.  
87.         Dependency "AddPassShader" = "Triplanar-AddPass"
88.         Dependency "BaseMapShader" = "MyTriplanar-Base"
89.  
90.         Fallback "Diffuse"
91. }
92.  

 

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.

 

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.