User Clip Planes

I don't see anything of that sort available in the GL library.
Why?

 

I cooked up something extremely simple with a surface shader. (it's a very slight modification of one of the surface shader examples in shader lab documentation). To my surprise, it seems to work. I hope it won't have the precision problems oblique frustum clipping has when close to the clip plane.

Code (csharp):

1.  
2. Shader "Test Clip" {
3.     Properties {
4.       _MainTex ("Texture", 2D) = "white" {}
5.       _BumpMap ("Bumpmap", 2D) = "bump" {}
6.       _planePoint ("plane point", Vector) = (0,0,0,0)
7.       _planeNormal ("plane normal", Vector) = (0,1,0,0)
8.     }
9.     SubShader {
10.       Tags { "RenderType" = "Opaque" }
11.       Cull Off
12.       CGPROGRAM
13.       #pragma surface surf Lambert
14.       struct Input {
15.           float2 uv_MainTex;
16.           float2 uv_BumpMap;
17.           float3 worldPos;
18.       };
19.       sampler2D _MainTex;
20.       sampler2D _BumpMap;
21.       float4 _planePoint;
22.       float4 _planeNormal;
23.       void surf (Input IN, inout SurfaceOutput o) {
24.          clip(dot(IN.worldPos - (float3)_planePoint,(float3)_planeNormal));
25.           o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;
26.           o.Normal = UnpackNormal (tex2D (_BumpMap, IN.uv_BumpMap));
27.       }
28.       ENDCG
29.     }
30.     Fallback "Diffuse"
31.   }
32.  

 

thank you!

 

Now dozens of thanks to you!! This little code really saved me a lot of time

 

Excellent, this gives me a good base to work from. Thanks.

 

Thanks much. You just saved my day

 

Thanks a lot, works perfectly!