// SomeShader.shader
Shader "Custom/AlwaysOnTopURP"
{
    Properties
    {
        _BaseMap ("Texture", 2D) = "white" {}
        _Color ("Color", Color) = (1,1,1,1)
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" "RenderQueue"="Geometry+1000" }
        LOD 100

        Blend SrcAlpha OneMinusSrcAlpha
        ZWrite Off
        ZTest Always

        Pass
        {
            HLSLPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma multi_compile_fragment _ALPHAPREMULTIPLY_ON
            #pragma multi_compile_fragment _ALPHAMODULATE_ON
            #pragma multi_compile_fragment _ALPHATEST_ON
            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"

            struct Attributes
            {
                float4 positionOS : POSITION;
                float2 uv : TEXCOORD0;
            };

            struct Varyings
            {
                float2 uv : TEXCOORD0;
                float4 positionCS : SV_POSITION;
            };

            TEXTURE2D(_BaseMap);
            SAMPLER(sampler_BaseMap);

            float4 _BaseMap_ST;
            float4 _Color;

            Varyings vert(Attributes IN)
            {
                Varyings OUT;
                OUT.uv = TRANSFORM_TEX(IN.uv, _BaseMap);
                OUT.positionCS = TransformObjectToHClip(IN.positionOS.xyz);
                return OUT;
            }

            half4 frag(Varyings IN) : SV_Target
            {
                half4 color = SAMPLE_TEXTURE2D(_BaseMap, sampler_BaseMap, IN.uv) * _Color;
                return color;
            }
            ENDHLSL
        }
    }
}