UnityShader使用Plane实现翻书效果

// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

Shader "Personal/PageTurning" {
 Properties 
 {
  _Color ("Color", Color) = (1,1,1,1)
  _MainTex("MainTex",2D)="White"{}
  _SecTex("SecTex",2D)="White"{}
  _Angle("Angle",Range(0,180))=0
  _Warp("Warp",Range(0,10))=0
  _WarpPos("WarpPos",Range(0,1))=0
  _Downward("Downward",Range(0,1))=0
 }
 SubShader
 {
  pass
  {
   Cull Back

   CGPROGRAM
   #pragma vertex vert 
   #pragma fragment frag 
   #include "UnityCG.cginc"

   struct v2f 
   {
    float4 pos : POSITioN;
    float2 uv : TEXCOORD0;
   };
   fixed4 _Color;
   float _Angle;
   float _Warp;
   float _Downward;
   float _WarpPos;
   sampler2D _MainTex;
   float4 _MainTex_ST;

   v2f vert(appdata_base v)
   {
    v2f o;
    v.vertex += float4(5,0,0,0);
    float s;
    float c;
    sincos(radians(-_Angle),s,c);
    float4x4 rotate={   
    c,s,0,0,
    -s,c,0,0,
    0,0,1,0,
    0,0,0,1};
    float rangeF=saturate(1 - abs(90-_Angle)/90);
    v.vertex.y += -_Warp*sin(v.vertex.x*0.4-_WarpPos* v.vertex.x)*rangeF;
    v.vertex.x -= rangeF * v.vertex.x*_Downward;
    v.vertex = mul(rotate,v.vertex);
    
    v.vertex += float4(-5,0,0,0);
    o.pos = UnityObjectToClipPos(v.vertex);
    o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);
    return o;
   }

   fixed4 frag(v2f i):COLOR
   {
    fixed4 color = tex2D(_MainTex,-i.uv);
    return _Color * color;
   }


   ENDCG
  }

  pass
  {
   Cull Front

   CGPROGRAM
   #pragma vertex vert 
   #pragma fragment frag 
   #include "UnityCG.cginc"

   struct v2f 
   {
    float4 pos : POSITION;
    float2 uv : TEXCOORD0;
   };
   fixed4 _Color;
   float _Angle;
   float _Warp;
   float _Downward;
   float _WarpPos;
   sampler2D _SecTex;
   float4 _MainTex_ST;

   v2f vert(appdata_base v)
   {
    v2f o;
    v.vertex += float4(5,0,0,0);
    float s;
    float c;
    sincos(radians(-_Angle),s,c);
    float4x4 rotate={   
    c,s,0,0,
    -s,c,0,0,
    0,0,1,0,
    0,0,0,1};
    float rangeF=saturate(1 - abs(90-_Angle)/90);
    v.vertex.y += -_Warp*sin(v.vertex.x*0.4-_WarpPos* v.vertex.x)*rangeF;
    v.vertex.x -= rangeF * v.vertex.x*_Downward;
    v.vertex = mul(rotate,v.vertex);
    
    v.vertex += float4(-5,0,0,0);
    o.pos = UnityObjectToClipPos(v.vertex);
    o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);
    return o;
   }

   fixed4 frag(v2f i):COLOR
   {
    float2 uv = i.uv;
    uv.x = -uv.x;
    fixed4 color = tex2D(_SecTex,-uv);
    return _Color * color;
   }
   ENDCG
  }
 }
}

using UnityEngine;
using DG.Tweening;
 
public class PageTurning : MonoBehaviour
{
    private Material m_Material;
    private int nowPage = 1; //最下面页码
    private int lastPage;   //已经翻过的
    private int allPage = 10;   //所有的页数
    private float Thickness = 0; //书的厚度
 
    void Start ()
    {
        m_Material = GetComponent<MeshRenderer>().material;
        Texture ShowFront =  Resources.Load("AllTextur/FrontTextur/" + nowPage.ToString(), typeof(Texture)) as Texture;
        Texture ShowVerso = Resources.Load("AllTextur/VersoTextur/" + nowPage.ToString(), typeof(Texture)) as Texture;
         m_Material.SetTexture("_MainTex", ShowFront);
         m_Material.SetTexture("_SecTex", ShowVerso);
    }
    
    public void Turning()
    {
        nowPage += 1;    
        if (nowPage>10)   //设置阈值
        {
            nowPage = 1;
        }
        lastPage = nowPage - 1;
        if (lastPage < 1)
        {
            lastPage = allPage;
        }
        #region  翻动的页面
 
        Material m_Material2 = (Instantiate(Resources.Load("Plane"),new Vector3(0, Thickness+=0.001f, 0), QuaterNIOn.identity) as GameObject).GetComponent<MeshRenderer>().material;
 
        m_Material2.SetFloat("_Angle", 0);      //DoTween做旋转动画
        m_Material2.DOFloat(180, "_Angle", 2);
        
        //m_Material2.name = "当前Material"+ lastPage;
        Texture ShowFrontLast = Resources.Load("AllTextur/FrontTextur/" + lastPage.ToString(), typeof(Texture)) as Texture;  //Resources加载正面图片
        Texture ShowVersoLast = Resources.Load("AllTextur/VersoTextur/" + lastPage.ToString(), typeof(Texture)) as Texture;  //Resources加载反面图片
        m_Material2.SetTexture("_MainTex", ShowFrontLast);   //更改材质的正面 
        m_Material2.SetTexture("_SecTex", ShowVersoLast);    //更改材质球的反面
 
        #endregion
 
        Texture ShowFront = Resources.Load("AllTextur/FrontTextur/" + nowPage.ToString(), typeof(Texture)) as Texture;    //Resources加载正面图片
        Texture ShowVerso = Resources.Load("AllTextur/VersoTextur/" + nowPage.ToString(), typeof(Texture)) as Texture;   //Resources加载反面图片
        m_Material.SetTexture("_MainTex", ShowFront);       //更改材质求的正面
        m_Material.SetTexture("_SecTex", ShowVerso);       //更改材质球的反面
        //m_Material.name = "当前Material"+nowPage.ToString();
 
       
    }
}

m_Material.SetFloat("_Angle", value)