1 Shader "LeafAnim" {
 2 Properties {
 3     _MainTex ("Base (RGB)", 2D) = "white" {}
 4     _Dist ("_Dist", float) = 0.04
 5     _Speed ("_Speed", float) = 0.2
 6 }
 7 
 8 SubShader {
 9     Tags {"IgnoreProjector"="True" "RenderType"="Transparent"}
10     LOD 350
11 
12 CGPROGRAM
13 #pragma surface surf Lambert vertex:vert  
14 
15 sampler2D _MainTex;
16 
17 struct Input {
18     half2 uv_MainTex;
19 };
20 
21 fixed _Dist;
22 fixed _Speed;
23 
24 struct appdata_t {
25     float4 vertex : POSITION;
26     float2 texcoord : TEXCOORD0;
27     float3 normal : NORMAL;
28 };
29 
30 void vert (inout appdata_t v)
31 {
32     float4 vertex = mul(v.vertex, _Object2World);
33     float a = vertex.x * vertex.z;//沿x和z轴距离作为偏离的一个依据，这样各个地方的叶子偏离的大小就不同，就“摇曳”起来了。
　　　　//通过偏移顶点让叶子摇动起来
34      v.vertex.xyz += float3(1,0,1) * _Dist * sin(_Time.w * (_Speed)+a);//dist是整体偏离放大缩小倍数，用Time.w做循环，sin做距离约束
35 }
　　void surf (Input IN, inout SurfaceOutput o) 
　　{
    fixed4 c = tex2D(_MainTex, IN.uv_MainTex);
    o.Albedo = c;
　　}
36 ENDCG
37 }
38 
39 Fallback "Transparent/VertexLit"
40 }