Shader "Sbin/FragmentAnim"{	Properties	{		_MainTex ("Texture", 2D) = "white" {}	}	SubShader	{		Pass		{			CGPROGRAM			#pragma vertex vert			#pragma fragment frag			#include "UnityCG.cginc"			sampler2D _MainTex;			float4 _MainTex_ST;//纹理缩放偏移向量(Unity默认此变量赋值,变量名规则：纹理名_ST)			struct v2f{				float4 pos:POSITION;				float2 uv:TEXCOORD0;			};			v2f vert (appdata_full v)			{				v2f o;				o.pos = mul(UNITY_MATRIX_MVP, v.vertex);				o.uv = v.texcoord.xy * _MainTex_ST.xy + _MainTex_ST.zw;				return o;			}			fixed4 frag (v2f v) : COLOR			{				fixed4 col = tex2D(_MainTex, v.uv);//第一个参数：纹理，第二个参数UV向量				return col;			}			ENDCG		}	}}

using UnityEngine;using System.Collections;public class FragmentAnim : MonoBehaviour{    public int rowCount;    //行数    public int columCount;  //列数    public int fps;         //播放速度    private int currentIndex;//当前播放索引值    IEnumerator Start()    {        Material mat = GetComponent
    
     ().material;        float itemWidth = 1.0f / rowCount;      //每一帧宽度        float itemHeight = 1.0f / columCount;   //每一帧高度        while (true)        {            float offset_x = currentIndex % columCount * itemWidth;            float offset_y = currentIndex / rowCount * itemHeight;            mat.SetTextureScale("_MainTex", new Vector2(itemWidth, itemHeight));            mat.SetTextureOffset("_MainTex", new Vector2(offset_x, offset_y));            yield return new WaitForSeconds(1 / fps);            currentIndex = (++currentIndex) % (rowCount * columCount);        }    }}