三張貼圖通過改變主材質及修飾材質的UV重復次數，實現不同的效果。如下：

圖中的房子和圍墻只用了三張貼圖就實現了完全不同的建築，厲害吧~~~

shader如下：

Properties
    {
        _Color("Base Color", Color) = (1,1,1,1)
        _MainTex("Base(RGB)", 2D) = "white" {}
        _ColorU("ColorU", float) = 1.0 //主紋理X軸重復次數
        _ColorV("ColorV", float) = 1.0 //主紋理Y軸重復次數
        _DetailTex("
 
DetailTex", 2D) = "white" {}
        _DetailU("DetailU", float) = 1.0 //修飾紋理X軸重復次數
        _DetailV("DetailV", float) = 1.0 //修飾紋理Y軸重復次數
    }
    
    SubShader
    {
        tags{"Queue" = "Transparent" "RenderType" = "Transparent" "IgnoreProjector" = "True"}
        Blend SrcAlpha OneMinusSrcAlpha
        
        Pass
        {
            
            CGPROGRAM
            
 
#pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"
            
            float4 _Color;
            sampler2D _MainTex;
            float _ColorU;
            float _ColorV;
            sampler2D _DetailTex;
            float _DetailU;
            float _DetailV;
            
            
 
struct v2f
            {
                float4 pos:POSITION;
                float2 uv:TEXCOORD0;
            };
            
            
            float4 _DetailTex_ST;
            v2f vert(appdata_base v)
            {
                v2f o;
                o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
                o.uv = v.texcoord.xy;
                //o.uv = TRANSFORM_TEX(v.texcoord, _DetailTex);//簡單的UV重復，通過界面的Tiling屬性改變UV的重復次數，Offset改變UV位置。
                return o;
            }
            
            half4 frag(v2f i):COLOR
            {    
                half4 c = tex2D(_MainTex , i.uv * float2(_ColorU, _ColorV)) * _Color;
                half4 d = tex2D(_DetailTex, i.uv * float2(_DetailU, _DetailV));
                return c * d;
            }
            
            ENDCG
        }
    }

復雜紋理復制及紋理疊加效果