Terrain multi UV Mixing with new unity 5 standard shader.

I founded this and i tryed to impleemnt it in the new unity 5 standard terrain shader. I looked around in the built-in shaders finding the TerrainSplatmapCommon.cginc, where i changed it as the topic said, so my actual TerrainSplatmapAdvanced.cginc (renamed it) is like:

Code (CSharp):

1. #ifndef TERRAIN_SPLATMAP_ADVANCED_CGINC_INCLUDED
2. #define TERRAIN_SPLATMAP_ADVANCED_CGINC_INCLUDED
3.  
4. struct Input
5. {
6.     float2 uv_Splat0 : TEXCOORD0;
7.     float2 uv_Splat1 : TEXCOORD1;
8.     float2 uv_Splat2 : TEXCOORD2;
9.     float2 uv_Splat3 : TEXCOORD3;
10.     float2 tc_Control : TEXCOORD4;    // Not prefixing '_Contorl' with 'uv' allows a tighter packing of interpolators, which is necessary to support directional lightmap.
11.     UNITY_FOG_COORDS(5)
12. };
13.  
14. sampler2D _Control;
15. float4 _Control_ST;
16. sampler2D _Splat0,_Splat1,_Splat2,_Splat3;
17.  
18. #ifdef _TERRAIN_NORMAL_MAP
19.     sampler2D _Normal0, _Normal1, _Normal2, _Normal3;
20. #endif
21.  
22. void SplatmapVert(inout appdata_full v, out Input data)
23. {
24.     UNITY_INITIALIZE_OUTPUT(Input, data);
25.     data.tc_Control = TRANSFORM_TEX(v.texcoord, _Control);    // Need to manually transform uv here, as we choose not to use 'uv' prefix for this texcoord.
26.     float4 pos = mul (UNITY_MATRIX_MVP, v.vertex);
27.     UNITY_TRANSFER_FOG(data, pos);
28.    
29. #ifdef _TERRAIN_NORMAL_MAP
30.     v.tangent.xyz = cross(v.normal, float3(0,0,1));
31.     v.tangent.w = -1;
32. #endif
33. }
34.  
35. void SplatmapMix(Input IN, out half4 splat_control, out half weight, out fixed4 mixedDiffuse, inout fixed3 mixedNormal)
36. {
37.     splat_control = tex2D(_Control, IN.tc_Control);
38.     weight = dot(splat_control, half4(1,1,1,1));
39.  
40.     #ifndef UNITY_PASS_DEFERRED
41.         // Normalize weights before lighting and restore weights in applyWeights function so that the overal
42.         // lighting result can be correctly weighted.
43.         // In G-Buffer pass we don't need to do it if Additive blending is enabled.
44.         // TODO: Normal blending in G-buffer pass...
45.         splat_control /= (weight + 1e-3f); // avoid NaNs in splat_control
46.     #endif
47.  
48.     #if !defined(SHADER_API_MOBILE) && defined(TERRAIN_SPLAT_ADDPASS)
49.         clip(weight - 0.0039 /*1/255*/);
50.     #endif
51.  
52.     mixedDiffuse = 0.0f;
53.     mixedDiffuse += splat_control.r * tex2D(_Splat0, IN.uv_Splat0) * tex2D(_Splat0, IN.uv_Splat0 * -0.25) * 4;
54.     mixedDiffuse += splat_control.g * tex2D(_Splat1, IN.uv_Splat1) * tex2D(_Splat1, IN.uv_Splat1 * -0.25) * 4;
55.     mixedDiffuse += splat_control.b * tex2D(_Splat2, IN.uv_Splat2) * tex2D(_Splat2, IN.uv_Splat2 * -0.25) * 4;
56.     mixedDiffuse += splat_control.a * tex2D(_Splat3, IN.uv_Splat3) * tex2D(_Splat3, IN.uv_Splat3 * -0.25) * 4;
57.  
58.     #ifdef _TERRAIN_NORMAL_MAP
59.         fixed4 nrm = 0.0f;
60.         nrm += splat_control.r * tex2D(_Normal0, IN.uv_Splat0);
61.         nrm += splat_control.g * tex2D(_Normal1, IN.uv_Splat1);
62.         nrm += splat_control.b * tex2D(_Normal2, IN.uv_Splat2);
63.         nrm += splat_control.a * tex2D(_Normal3, IN.uv_Splat3);
64.         mixedNormal = UnpackNormal(nrm);
65.     #endif
66. }
67.  
68. void SplatmapApplyWeight(inout fixed4 color, fixed weight)
69. {
70.     color.rgb *= weight;
71.     color.a = 1.0f;
72. }
73.  
74. void SplatmapApplyFog(inout fixed4 color, Input IN)
75. {
76.     #ifdef TERRAIN_SPLAT_ADDPASS
77.         UNITY_APPLY_FOG_COLOR(IN.fogCoord, color, fixed4(0,0,0,0));
78.     #else
79.         UNITY_APPLY_FOG(IN.fogCoord, color);
80.     #endif
81. }
82.  
83. #endif
84.  

then I have imported it in my project, changed the references to the first-pass.shader, add-pass and base-pass (renamed this to base-pass-advanced) but then my terrain turned out without multi UV mixing and with smoothness fixed at 1. Someone can tell me what im doing wrong?

 

I managed to get this working, see my reply in the thread you linked. Instead of copying the entire file and including that, i just copied the SplatmapMix-function and put it directly in my shader file.