U_Shader 可以自定义贴图和颜色

Shader "Study/Tex"{
    Properties{
        _MainTexture("Texture", 2D) = "white" {}
        _Color("Color", Color) = (1,1,1,1)
    }
    
    SubShader{
        Pass{
            CGPROGRAM

            #pragma vertex vertexFunc
            #pragma fragment fragmentFunc

            #include "UnityCG.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
                float2 uv : TEXCOORD0;
            };

            struct v2f
            {
                float4 position : SV_POSITION;
                float2 uv : TEXCOORD0;
            };

            fixed4 _Color;
            sampler2D _MainTexture;

            v2f vertexFunc(appdata IN)
            {
                v2f OUT;
                OUT.position = UnityObjectToClipPos(IN.vertex);
                OUT.uv = IN.uv;
                return OUT;
            }

            fixed4 fragmentFunc(v2f IN) : SV_Target{
                fixed4 pixelColor = tex2D(_MainTexture, IN.uv);
                return pixelColor * _Color;
            }
            
            ENDCG
        }
    }
}

演示：