Unity UGUI Image UV移動shader

注意點:
1. 基於shader創建的材質球直接賦值到 Image組件的 material

2. 該圖片使用 PSD 格式 (不要使用PNG和JPG等格式,不然移動會有拖尾)

 

效果如下:

Shader "Unlit/ImageUVShader"
{
    Properties
	{
		_MainTex ("Main Texture (RGB)", 2D) = "white" {}
		_ScrollXMain("ScrollX Main",Range(0,1)) = 0
		_Mutiply("Mutiply",float) = 1
	}
	SubShader
	{
		Tags { "Queue"="Transparent"}
 
		Pass
		{
			ZWrite Off
			Blend SrcAlpha OneMinusSrcAlpha
			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			#include "Lighting.cginc"
 
			struct a2f{
				float4 vertex : POSITION;
				float2 texcoord : TEXCOORD0;
			};
			struct v2f{
				float4 pos: POSITION;
				float2 uv: TEXCOORD0;
			};
 
			sampler2D _MainTex;
			float4 _MainTex_ST;
			fixed _ScrollXMain;
			float _Mutiply;
 
			v2f vert (a2f v)
			{
				v2f o;
				o.pos = UnityObjectToClipPos(v.vertex);
				o.uv = TRANSFORM_TEX(v.texcoord,_MainTex)- frac(float2(_ScrollXMain,0.0)*_Time.y);
				return o;
			}
			
			fixed4 frag (v2f i) : SV_Target
			{
				float4 col1 = tex2D(_MainTex,i.uv);
				return col1;
			}
			ENDCG
		}
	}
	Fallback "Transparent/Cutout/VertexLit"

}