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Shader "Custom/ForceField"{Properties{    _Color("Color", Color) = (0,0,0,0)    _NoiseTex("NoiseTexture", 2D) = "white" {}    // 扭曲程度    _DistortStrength("DistortStrength", Range(0,1)) = 0.2    // 扭曲频率    _DistortTimeFactor("DistortTimeFactor", Range(0,1)) = 0.2    _RimStrength("RimStrength",Range(0, 10)) = 2    _IntersectPower("IntersectPower", Range(0, 3)) = 2}SubShader{    ZWrite Off    Cull Off    Blend SrcAlpha OneMinusSrcAlpha    Tags    {        "RenderType" = "Transparent"        "Queue" = "Transparent"    }    GrabPass    {        "_GrabTempTex"    }Pass{    CGPROGRAM#pragma target 3.0#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"    struct appdata{    float4 vertex : POSITION;    float2 uv : TEXCOORD0;    float3 normal : NORMAL;};struct v2f{    float4 vertex : SV_POSITION;    float2 uv : TEXCOORD0;    float4 screenPos : TEXCOORD1;    float4 grabPos : TEXCOORD2;    float3 normal : NORMAL;    float3 viewDir : TEXCOORD3;};sampler2D _GrabTempTex;float4 _GrabTempTex_ST;sampler2D _NoiseTex;float4 _NoiseTex_ST;float _DistortStrength;float _DistortTimeFactor;float _RimStrength;float _IntersectPower;sampler2D _CameraDepthTexture;v2f vert(appdata v){    v2f o;    o.vertex = UnityObjectToClipPos(v.vertex);    o.grabPos = ComputeGrabScreenPos(o.vertex);    o.uv = TRANSFORM_TEX(v.uv, _NoiseTex);    o.screenPos = ComputeScreenPos(o.vertex);    COMPUTE_EYEDEPTH(o.screenPos.z);    o.normal = UnityObjectToWorldNormal(v.normal);    o.viewDir = normalize(UnityWorldSpaceViewDir(mul(unity_ObjectToWorld, v.vertex)));    return o;}fixed4 _Color;fixed4 frag(v2f i) : SV_Target{    //获取已有的深度信息,此时的深度图里没有力场的信息    //判断相交    float sceneZ = LinearEyeDepth(SAMPLE_DEPTH_TEXTURE_PROJ(_CameraDepthTexture, UNITY_PROJ_COORD(i.screenPos)));    float partZ = i.screenPos.z;    float diff = sceneZ - partZ;    float intersect = (1 - diff) * _IntersectPower;    //圆环    float3 viewDir = normalize(UnityWorldSpaceViewDir(mul(unity_ObjectToWorld, i.vertex)));    float rim = 1 - abs(dot(i.normal, normalize(i.viewDir))) * _RimStrength;    float glow = max(intersect, rim);    //扭曲    float4 offset = tex2D(_NoiseTex, i.uv - _Time.xy * _DistortTimeFactor);    i.grabPos.xy -= offset.xy * _DistortStrength;    fixed4 color = tex2Dproj(_GrabTempTex, i.grabPos);    fixed4 col = _Color * glow + color;    return col;}ENDCG}}}

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