Bug Shadows not rendering like its suppose to

Im porting an old project made in Unity 2019 and for some reason a shader is not rendering well. The shadows are not projected directly on the object. They are projected like "behind"? I'll show you some images to understand what I mean:

https://imgur.com/cGdur5T
https://imgur.com/eGsCbI2

Also if I put a plane under this object the shadow is projected on this plane but you can see the shadow on the object.

https://imgur.com/v1ED9P5

In case you are wandering what shader am I using is this one:

Code (CSharp):

1. Shader "VacuumShaders/Terrain To Mesh/Legacy Shaders/Diffuse/8 Textures"
2. {
3.     Properties
4.     {
5.         _Color("Color", color) = (1, 1, 1, 1)
6.         [NoScaleOffset]_V_T2M_Control ("Control Map (RGBA)", 2D) = "black" {}
7.  
8.         //TTM
9.         [V_T2M_Layer] _V_T2M_Splat1 ("Layer 1 (R)", 2D) = "white" {}
10.         [HideInInspector] _V_T2M_Splat1_uvScale("", float) = 1
11.  
12.         [V_T2M_Layer] _V_T2M_Splat2 ("Layer 2 (G)", 2D) = "white" {}
13.         [HideInInspector] _V_T2M_Splat2_uvScale("", float) = 1
14.  
15.         [V_T2M_Layer] _V_T2M_Splat3 ("Layer 3 (B)", 2D) = "white" {}
16.         [HideInInspector] _V_T2M_Splat3_uvScale("", float) = 1
17.  
18.         [V_T2M_Layer] _V_T2M_Splat4 ("Layer 4 (A)", 2D) = "white" {}
19.         [HideInInspector] _V_T2M_Splat4_uvScale("", float) = 1
20.  
21.  
22.      
23.         [NoScaleOffset]_V_T2M_Control2 ("Control Map 2 (RGBA)", 2D) = "black" {}
24.  
25.         //TTM            
26.         [V_T2M_Layer] _V_T2M_Splat5 ("Layer 1 (R)", 2D) = "white" {}
27.         [HideInInspector] _V_T2M_Splat5_uvScale("", float) = 1
28.  
29.         [V_T2M_Layer] _V_T2M_Splat6 ("Layer 2 (G)", 2D) = "white" {}
30.         [HideInInspector] _V_T2M_Splat6_uvScale("", float) = 1
31.  
32.         [V_T2M_Layer] _V_T2M_Splat7 ("Layer 3 (B)", 2D) = "white" {}
33.         [HideInInspector] _V_T2M_Splat7_uvScale("", float) = 1
34.  
35.         [V_T2M_Layer] _V_T2M_Splat8 ("Layer 4 (A)", 2D) = "white" {}
36.         [HideInInspector] _V_T2M_Splat8_uvScale("", float) = 1
37.  
38.  
39.  
40.         //Fallback use only
41.         [NoScaleOffset]_MainTex ("BaseMap (Fallback use only!)", 2D) = "white" {}
42.     }
43.  
44.     SubShader
45.     {
46.         Tags { "RenderType"="Opaque" }
47.         LOD 200
48.    
49.         CGPROGRAM
50.         #pragma surface surf Lambert vertex:vert
51.         #pragma target 2.0
52.         //#pragma exclude_renderers gles
53.      
54.  
55.         #define V_T2M_2_CONTROL_MAPS
56.         #define V_T2M_3_TEX
57.         #define V_T2M_4_TEX
58.         #define V_T2M_5_TEX
59.         #define V_T2M_6_TEX
60.         #define V_T2M_7_TEX
61.         #define V_T2M_8_TEX
62.  
63.         #include "../cginc/T2M_Deferred.cginc"    
64.  
65.         ENDCG
66.     }
67.  
68.     FallBack "Hidden/VacuumShaders/Fallback/VertexLit"
69. }

It includes the T2M_Deferred.cging:

Code (CSharp):

1. #ifndef VACUUM_SHADERS_T2M_DEFERRED_CGINC
2. #define VACUUM_SHADERS_T2M_DEFERRED_CGINC
3.  
4. #include "../cginc/T2M_Variables.cginc"
5. #include "../cginc/CurvedWorld.cginc"
6.  
7.  
8. struct Input
9. {
10.     float2 uv_V_T2M_Control;
11.  
12.     #ifdef V_T2M_2_CONTROL_MAPS
13.         float2 uv_V_T2M_Control2;
14.     #endif
15. };
16.  
17.  
18. void vert (inout appdata_full v, out Input o)
19. {
20.     UNITY_INITIALIZE_OUTPUT(Input,o);
21.  
22.     //CurvedWorld vertex transform
23.     CURVED_WORLD_TRANSFORM_POINT_AND_NORMAL(v.vertex, v.normal, v.tangent);
24. }
25.  
26.  
27. #ifdef V_T2M_STANDARD
28. void surf (Input IN, inout SurfaceOutputStandard o)
29. #else
30. void surf (Input IN, inout SurfaceOutput o)
31. #endif
32. {
33.     half4 splat_control = tex2D (_V_T2M_Control, IN.uv_V_T2M_Control);
34.  
35.     fixed4 mainTex  = splat_control.r * tex2D (_V_T2M_Splat1, IN.uv_V_T2M_Control * _V_T2M_Splat1_uvScale);
36.            mainTex += splat_control.g * tex2D (_V_T2M_Splat2, IN.uv_V_T2M_Control * _V_T2M_Splat2_uvScale);
37.  
38.     #ifdef V_T2M_3_TEX
39.         mainTex += splat_control.b * tex2D (_V_T2M_Splat3, IN.uv_V_T2M_Control * _V_T2M_Splat3_uvScale);
40.     #endif
41.     #ifdef V_T2M_4_TEX
42.         mainTex += splat_control.a * tex2D (_V_T2M_Splat4, IN.uv_V_T2M_Control * _V_T2M_Splat4_uvScale);
43.     #endif
44.  
45.  
46.     #ifdef V_T2M_2_CONTROL_MAPS
47.          half4 splat_control2 = tex2D (_V_T2M_Control2, IN.uv_V_T2M_Control2);
48.  
49.          mainTex.rgb += tex2D (_V_T2M_Splat5, IN.uv_V_T2M_Control2 * _V_T2M_Splat5_uvScale) * splat_control2.r;
50.  
51.          #ifdef V_T2M_6_TEX
52.             mainTex.rgb += tex2D (_V_T2M_Splat6, IN.uv_V_T2M_Control2 * _V_T2M_Splat6_uvScale) * splat_control2.g;
53.          #endif
54.  
55.          #ifdef V_T2M_7_TEX
56.             mainTex.rgb += tex2D (_V_T2M_Splat7, IN.uv_V_T2M_Control2 * _V_T2M_Splat7_uvScale) * splat_control2.b;
57.          #endif
58.  
59.          #ifdef V_T2M_8_TEX
60.             mainTex.rgb += tex2D (_V_T2M_Splat8, IN.uv_V_T2M_Control2 * _V_T2M_Splat8_uvScale) * splat_control2.a;
61.          #endif
62.     #endif
63.  
64.  
65.  
66.     mainTex.rgb *= _Color.rgb;
67.  
68.  
69.     #ifdef V_T2M_BUMP
70.         fixed4 nrm = 0.0f;
71.         nrm += splat_control.r * tex2D(_V_T2M_Splat1_bumpMap, IN.uv_V_T2M_Control * _V_T2M_Splat1_uvScale);
72.         nrm += splat_control.g * tex2D(_V_T2M_Splat2_bumpMap, IN.uv_V_T2M_Control * _V_T2M_Splat2_uvScale);
73.  
74.         #ifdef V_T2M_3_TEX
75.             nrm += splat_control.b * tex2D (_V_T2M_Splat3_bumpMap, IN.uv_V_T2M_Control * _V_T2M_Splat3_uvScale);
76.         #endif
77.  
78.         #ifdef V_T2M_4_TEX
79.             nrm += splat_control.a * tex2D (_V_T2M_Splat4_bumpMap, IN.uv_V_T2M_Control * _V_T2M_Splat4_uvScale);
80.         #endif
81.      
82.      
83.         o.Normal = UnpackNormal(nrm);
84.     #endif
85.  
86.  
87.  
88.  
89.     #ifdef V_T2M_STANDARD
90.         half metallic = 0;
91.         metallic += splat_control.r * _V_T2M_Splat1_Metallic;
92.         metallic += splat_control.g * _V_T2M_Splat2_Metallic;
93.         #ifdef V_T2M_3_TEX
94.             metallic += splat_control.b * _V_T2M_Splat3_Metallic;
95.         #endif
96.         #ifdef V_T2M_4_TEX
97.             metallic += splat_control.a * _V_T2M_Splat4_Metallic;
98.         #endif
99.         #ifdef V_T2M_2_CONTROL_MAPS
100.             #ifdef V_T2M_5_TEX
101.                 metallic += splat_control2.r * _V_T2M_Splat5_Metallic;
102.             #endif
103.             #ifdef V_T2M_6_TEX
104.                 metallic += splat_control2.g * _V_T2M_Splat6_Metallic;
105.             #endif
106.             #ifdef V_T2M_7_TEX
107.                 metallic += splat_control2.b * _V_T2M_Splat7_Metallic;
108.             #endif
109.             #ifdef V_T2M_8_TEX
110.                 metallic += splat_control2.a * _V_T2M_Splat8_Metallic;
111.             #endif
112.         #endif
113.  
114.  
115.         half glossiness = 0;
116.         glossiness += splat_control.r * _V_T2M_Splat1_Glossiness;
117.         glossiness += splat_control.g * _V_T2M_Splat2_Glossiness;
118.         #ifdef V_T2M_3_TEX
119.             glossiness += splat_control.b * _V_T2M_Splat3_Glossiness;
120.         #endif
121.         #ifdef V_T2M_4_TEX
122.             glossiness += splat_control.a * _V_T2M_Splat4_Glossiness;
123.         #endif
124.         #ifdef V_T2M_2_CONTROL_MAPS
125.             #ifdef V_T2M_5_TEX
126.                 glossiness += splat_control2.r * _V_T2M_Splat5_Glossiness;
127.             #endif
128.             #ifdef V_T2M_6_TEX
129.                 glossiness += splat_control2.g * _V_T2M_Splat6_Glossiness;
130.             #endif
131.             #ifdef V_T2M_7_TEX
132.                 glossiness += splat_control2.b * _V_T2M_Splat7_Glossiness;
133.             #endif
134.             #ifdef V_T2M_8_TEX
135.                 glossiness += splat_control2.a * _V_T2M_Splat8_Glossiness;
136.             #endif
137.         #endif
138.  
139.         o.Metallic = metallic;
140.         o.Smoothness = glossiness;
141.     #else
142.         #ifdef V_T2M_SPECULAR
143.             o.Gloss = mainTex.a;
144.  
145.             half shininess = 0;
146.             shininess += splat_control.r * _V_T2M_Splat1_Shininess;
147.             shininess += splat_control.g * _V_T2M_Splat2_Shininess;
148.             #ifdef V_T2M_3_TEX
149.                 shininess += splat_control.b * _V_T2M_Splat3_Shininess;
150.             #endif
151.             #ifdef V_T2M_4_TEX
152.                 shininess += splat_control.a * _V_T2M_Splat4_Shininess;
153.             #endif
154.  
155.             o.Specular = shininess;
156.         #endif
157.     #endif
158.  
159.     o.Albedo = mainTex.rgb;
160.     o.Alpha = 1.0;
161. }
162.  
163. #endif

And the variable Control map is this:

Code (CSharp):

1. Shader "Custom/ControlMapShader"
2. {
3.     Properties{
4.         _ControlMap1("Control Map 1", 2D) = "white" {}
5.         _Layer1R1("Layer 1 Red", 2D) = "white" {}
6.         _Layer2G1("Layer 2 Green", 2D) = "white" {}
7.         _Layer3B1("Layer 3 Blue", 2D) = "white" {}
8.         _Layer4A1("Layer 4 Alpha", 2D) = "white" {}
9.  
10.         _ControlMap2("Control Map 2", 2D) = "white" {}
11.         _Layer1R2("Layer 1 Red 2", 2D) = "white" {}
12.         _Layer2G2("Layer 2 Green 2", 2D) = "white" {}
13.         _Layer3B2("Layer 3 Blue 2", 2D) = "white" {}
14.         _Layer4A2("Layer 4 Alpha 2", 2D) = "white" {}
15.     }
16.  
17.         SubShader{
18.             Tags { "RenderType" = "Opaque" }
19.             LOD 100
20.  
21.             Pass {
22.                 CGPROGRAM
23.                 #pragma vertex vert
24.                 #pragma fragment frag
25.                 #pragma multi_compile_fwdbase
26.                 #include "UnityCG.cginc"
27.  
28.                 struct appdata_t {
29.                     float4 vertex : POSITION;
30.                     float2 uv1 : TEXCOORD0;
31.                     float2 uv2 : TEXCOORD1;
32.                 };
33.  
34.                 struct v2f {
35.                     float2 uv1 : TEXCOORD0;
36.                     float2 uv2 : TEXCOORD1;
37.                     float4 vertex : SV_POSITION;
38.                     float4 shadowCoord : TEXCOORD2;
39.                 };
40.  
41.                 sampler2D _ControlMap1;
42.                 sampler2D _Layer1R1;
43.                 sampler2D _Layer2G1;
44.                 sampler2D _Layer3B1;
45.                 sampler2D _Layer4A1;
46.  
47.                 sampler2D _ControlMap2;
48.                 sampler2D _Layer1R2;
49.                 sampler2D _Layer2G2;
50.                 sampler2D _Layer3B2;
51.                 sampler2D _Layer4A2;
52.  
53.                 v2f vert(appdata_t v) {
54.                     v2f o;
55.                     o.vertex = UnityObjectToClipPos(v.vertex);
56.                     o.uv1 = v.uv1;
57.                     o.uv2 = v.uv2;
58.                     o.shadowCoord = ComputeScreenPos(o.vertex);
59.                     return o;
60.                 }
61.  
62.                 fixed4 frag(v2f i) : SV_Target {
63.                     // Sample control maps
64.                     fixed4 controlMap1 = tex2D(_ControlMap1, i.uv1);
65.                     fixed4 controlMap2 = tex2D(_ControlMap2, i.uv2);
66.  
67.                     // Sample layer textures
68.                     fixed4 layer1 = tex2D(_Layer1R1, i.uv1) * controlMap1.r + tex2D(_Layer1R2, i.uv2) * controlMap2.r;
69.                     fixed4 layer2 = tex2D(_Layer2G1, i.uv1) * controlMap1.g + tex2D(_Layer2G2, i.uv2) * controlMap2.g;
70.                     fixed4 layer3 = tex2D(_Layer3B1, i.uv1) * controlMap1.b + tex2D(_Layer3B2, i.uv2) * controlMap2.b;
71.                     fixed4 layer4 = tex2D(_Layer4A1, i.uv1) * controlMap1.a + tex2D(_Layer4A2, i.uv2) * controlMap2.a;
72.  
73.                     // Combine the layers
74.                     fixed4 finalColor = layer1 + layer2 + layer3 + layer4;
75.  
76.                     // Apply shadows (Unity's built-in lighting)
77.                     #ifdef UNITY_PASS_SHADOWCASTER
78.                     SHADOW_CASTER_FRAGMENT(i)
79.                     #endif
80.  
81.                     return finalColor;
82.                 }
83.                 ENDCG
84.             }
85.     }
86. }
87.  

Any help with this?

 

I'm somewhat concerned with that line. Using a curved world modification to the main shader, but not having a custom shadow caster pass that also does it is usually going to cause a bad time.

 

Yeah sorry there were more includes that I didnt post. The T2M_Deferred has 2 more includes:

T2M_Variables.cginc:

Code (CSharp):

1. #ifndef VACUUM_SHADERS_T2M_VARIABLES_CGINC
2.  
3. #define VACUUM_SHADERS_T2M_VARIABLES_CGINC
4.  
5. fixed4 _Color;
6.  
7. sampler2D _V_T2M_Control;
8. sampler2D _V_T2M_Splat1; half _V_T2M_Splat1_uvScale;
9. sampler2D _V_T2M_Splat2; half _V_T2M_Splat2_uvScale;
10.  
11. #ifdef V_T2M_BUMP
12.     sampler2D _V_T2M_Splat1_bumpMap;
13.     sampler2D _V_T2M_Splat2_bumpMap;
14. #endif
15.  
16. #ifdef V_T2M_3_TEX
17. sampler2D _V_T2M_Splat3; half _V_T2M_Splat3_uvScale;
18.  
19.     #ifdef V_T2M_BUMP
20.         sampler2D _V_T2M_Splat3_bumpMap;
21.     #endif
22. #endif
23.  
24. #ifdef V_T2M_4_TEX
25. sampler2D _V_T2M_Splat4; half _V_T2M_Splat4_uvScale;
26.  
27.     #ifdef V_T2M_BUMP
28.         sampler2D _V_T2M_Splat4_bumpMap;
29.     #endif
30. #endif
31.  
32. #ifdef V_T2M_2_CONTROL_MAPS
33.     sampler2D _V_T2M_Control2;
34.  
35.     sampler2D _V_T2M_Splat5; half _V_T2M_Splat5_uvScale;
36.     #ifdef V_T2M_BUMP
37.         sampler2D _V_T2M_Splat5_bumpMap;
38.     #endif
39.  
40.     #ifdef V_T2M_6_TEX
41.         sampler2D _V_T2M_Splat6; half _V_T2M_Splat6_uvScale;
42.         #ifdef V_T2M_BUMP
43.             sampler2D _V_T2M_Splat6_bumpMap;
44.         #endif
45.     #endif
46.  
47.     #ifdef V_T2M_7_TEX
48.         sampler2D _V_T2M_Splat7; half _V_T2M_Splat7_uvScale;
49.     #endif
50.  
51.     #ifdef V_T2M_8_TEX
52.         sampler2D _V_T2M_Splat8; half _V_T2M_Splat8_uvScale;
53.     #endif
54. #endif
55.  
56. #ifdef V_T2M_SPECULAR
57.     half _V_T2M_Splat1_Shininess;
58.     half _V_T2M_Splat2_Shininess;
59.  
60.     #ifdef V_T2M_3_TEX
61.         half _V_T2M_Splat3_Shininess;
62.     #endif
63.     #ifdef V_T2M_4_TEX
64.         half _V_T2M_Splat4_Shininess;
65.     #endif
66. #endif
67.  
68. #ifdef V_T2M_STANDARD
69.     half _V_T2M_Splat1_Glossiness;
70.     half _V_T2M_Splat1_Metallic;
71.  
72.     half _V_T2M_Splat2_Glossiness;
73.     half _V_T2M_Splat2_Metallic;
74.  
75.     #ifdef V_T2M_3_TEX
76.         half _V_T2M_Splat3_Glossiness;
77.         half _V_T2M_Splat3_Metallic;
78.     #endif
79.  
80.     #ifdef V_T2M_4_TEX
81.         half _V_T2M_Splat4_Glossiness;
82.         half _V_T2M_Splat4_Metallic;
83.     #endif
84.  
85.     #ifdef V_T2M_5_TEX
86.         half _V_T2M_Splat5_Glossiness;
87.         half _V_T2M_Splat5_Metallic;
88.     #endif
89.  
90.     #ifdef V_T2M_6_TEX
91.         half _V_T2M_Splat6_Glossiness;
92.         half _V_T2M_Splat6_Metallic;
93.     #endif
94.  
95.     #ifdef V_T2M_7_TEX
96.         half _V_T2M_Splat7_Glossiness;
97.         half _V_T2M_Splat7_Metallic;
98.     #endif
99.  
100.     #ifdef V_T2M_8_TEX
101.         half _V_T2M_Splat8_Glossiness;
102.         half _V_T2M_Splat8_Metallic;
103.     #endif
104. #endif
105.  
106. #endif
107.  

And CuveWorld.cginc:

Code (CSharp):

1.  
2. //Uncomment line below and set it to be the correct path to the 'CurvedWorld_Base.cginc' file (part of the Curved World package).
3. //#include "Assets/VacuumShaders/Curved World/Shaders/cginc/CurvedWorld_Base.cginc"
4.  
5.  
6. #ifndef CURVED_WORLD_TRANSFORM_POINT_AND_NORMAL
7.     #define CURVED_WORLD_TRANSFORM_POINT_AND_NORMAL(vertex,normal,tangent)
8. #endif
9.  
10. #ifndef CURVED_WORLD_TRANSFORM_POINT
11.     #define CURVED_WORLD_TRANSFORM_POINT(vertex)
12. #endif

Also this shader was on a plugin (Terrain to mesh) and is responsible to bake the terrain textures into one using the RGBA channels and painting each texture in each channel.