我在网上找到的播放序列帧的shader代码：
Shader "HELLOHUAN/Hello_Sequence" {
Properties {
_Color ("Main Color", Color) = (1,1,1,1)
_MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
_SizeX ("列数", Float) = 4
_SizeY ("行数", Float) = 4
_Speed ("播放速度", Float) = 200
}
SubShader {
Tags { "RenderType"="Opaque"}
LOD 200
CGPROGRAM
#pragma surface surf Lambert alpha
sampler2D _MainTex;
fixed4 _Color;
uniform fixed _SizeX;
uniform fixed _SizeY;
uniform fixed _Speed;
struct Input {
float2 uv_MainTex;
};
void surf (Input IN, inout SurfaceOutput o) {
int index = floor(_Time .x * _Speed);
int indexY = index/_SizeX;
int indexX = index - indexY*_SizeX;
float2 testUV = float2(IN.uv_MainTex.x /_SizeX, IN.uv_MainTex.y /_SizeY);
testUV.x += indexX/_SizeX;
testUV.y += indexY/_SizeY;
fixed4 c = tex2D(_MainTex, testUV) * _Color;
o.Albedo = c.rgb;
o.Alpha = c.a;
//o.Albedo = float3( floor(_Time .x * _Speed) , 1.0, 1.0);
}
ENDCG
}
Fallback "Transparent/VertexLit"
}

然后想把unity中自带的Particles/Additive的代码进行融合，但是本人不会写shader，哪位大神会弄啊？？？
这么做的目的就是在于，想在一个Plane上用高亮叠加的方式播放序列帧，不知道哪位大侠能帮个忙？？？？？？

这个shader在手机上会出现time的精度问题吧
时间久了uv就会乱掉了