unity的双面渲染shader

可以使用以下代码实现双面渲染：

Shader "Custom/DoubleSided" {
Properties {
_MainTex ("Texture", 2D) = "white" {}
}
SubShader {
Tags {"Queue"="Transparent" "RenderType"="Opaque"}
LOD 100

Pass {
Cull Off
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"

struct appdata {
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
};

struct v2f {
float2 uv : TEXCOORD0;
float4 vertex : SV_POSITION;
};

sampler2D _MainTex;

v2f vert (appdata v) {
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.uv = v.uv;
return o;
}

fixed4 frag (v2f i) : SV_Target {
return tex2D(_MainTex, i.uv);
}
ENDCG
}
}
FallBack "Diffuse"
}