如何统一隐藏网格之间的交点

Question

在网络上找到了这个透明的内部发光着色器：

Shader "Cell/MainTransparentFresnel" {
Properties 
{
   _InnerColor ("Inner Color", Color) = (1.0, 1.0, 1.0, 1.0)
   _RimColor ("Rim Color", Color) = (0.26,0.19,0.16,0.0)
   _RimPower ("Rim Power", Range(0.5,8.0)) = 3.0
}
SubShader {
    Tags { "Queue" = "Transparent" }

        Blend one one

        CGPROGRAM
        #pragma surface surf Lambert

        struct Input {
            float3 viewDir;
        };

        float4 _InnerColor;
        float4 _RimColor;
        float _RimPower;

        void surf (Input IN, inout SurfaceOutput o) 
        {
            o.Albedo = _InnerColor.rgb;
            half rim = 1.0 - saturate(dot (normalize(IN.viewDir), o.Normal));
            o.Emission = _RimColor.rgb * pow (rim, _RimPower);
        }
    ENDCG
} 
Fallback "Diffuse"

这是我从此着色器混合两个网格时的结果： result 1

我尝试过模版缓冲区：

stencil {
   ref 2
   comp notequal
   pass replace

，结果如下： result 2

我希望隐藏两个十字路口

类似 this

有什么主意吗？