[Solved] Ambient Occlusion showing through Unlit texture

Hi all. I am having an issue where the post-processing ambient occlusion in my scene is showing through my object. The object is a mesh I created in Blender, and has an Unlit Texture shader applied. See below:



Switching the shader to Standard solves the issue, but I don't want the object to be affected by light sources, so that's not really a solution.

Would really appreciate any help or ideas!

Cheers

 

Big thanks to /u/CustomPhase on Reddit:

I just added in a Shadowcaster pass to my unlit shader and now it works as I'd like. Here is a copy of the shader for anyone who might have this same issue.

 

Pasting the code here for anyone else in case the link expires:

Code (CSharp):

1. Shader "Unlit/UnlitWithShadowcaster"
2. {
3.     Properties
4.     {
5.         _MainTex ("Texture", 2D) = "white" {}
6.     }
7.     SubShader
8.     {
9.         Tags { "RenderType"="Opaque" }
10.         LOD 100
11.  
12.         UsePass "Legacy Shaders/VertexLit/SHADOWCASTER"
13.  
14.         Pass
15.         {
16.             CGPROGRAM
17.             #pragma vertex vert
18.             #pragma fragment frag
19.             // make fog work
20.             #pragma multi_compile_fog
21.  
22.             #include "UnityCG.cginc"
23.  
24.             struct appdata
25.             {
26.                 float4 vertex : POSITION;
27.                 float2 uv : TEXCOORD0;
28.             };
29.  
30.             struct v2f
31.             {
32.                 float2 uv : TEXCOORD0;
33.                 UNITY_FOG_COORDS(1)
34.                 float4 vertex : SV_POSITION;
35.             };
36.  
37.             sampler2D _MainTex;
38.             float4 _MainTex_ST;
39.  
40.             v2f vert (appdata v)
41.             {
42.                 v2f o;
43.                 o.vertex = UnityObjectToClipPos(v.vertex);
44.                 o.uv = TRANSFORM_TEX(v.uv, _MainTex);
45.                 UNITY_TRANSFER_FOG(o,o.vertex);
46.                 return o;
47.             }
48.  
49.             fixed4 frag (v2f i) : SV_Target
50.             {
51.                 // sample the texture
52.                 fixed4 col = tex2D(_MainTex, i.uv);
53.                 // apply fog
54.                 UNITY_APPLY_FOG(i.fogCoord, col);
55.                 return col;
56.             }
57.             ENDCG
58.         }
59.     }
60. }