unity中用shader实现大海的特效

之前学过一个是做流水效果的

但是自我感觉效果不太好，波动太规律了，而且能看到上面的面像是由多个面组合成的，感觉有点假，不过功能是实现了。

using UnityEngine;
using System.Collections;

public class CreateWater : MonoBehaviour {

    Mesh mesh;

    public int tier = 10;//长度分段
    public int length = 10;//长
    public int width = 3;//宽
    public int hight = 10;//高

    private Vector3[] vs;//顶点坐标
    private int[] ts;//顶点序列
    private Vector2[] newUVs;//UV贴图
    private Vector3[] newNormals;//法线

    void Update()
    {
        int temp = ((tier + 1) * 8 + 4) * 3;//确定顶点数量

        vs = new Vector3[temp];
        ts = new int[temp];
        newUVs = new Vector2[temp];
        newNormals = new Vector3[temp];

        float dis = 2 * Mathf.PI / tier;//两段只差的横坐标

        int count = 0;
        for (int i = 0; i < tier; i++)
        {
            float pos1 = i * length / tier - length / 2;
            float pos2 = (i + 1) * length / tier - length / 2;
            //顶面顶点坐标
            vs[count] = new Vector3(pos1, Mathf.Sin(Time.time + i * dis), width);
            vs[count + 1] = new Vector3(pos2, Mathf.Sin(Time.time + (i + 1) * dis), -width);
            vs[count + 2] = new Vector3(pos1, Mathf.Sin(Time.time + i * dis), -width);

 &nb