Shader "Forset_URP/UI_Outline"
{
    Properties
    {
        _OutlineColor ("Outline Color", Color) = (1,1,1,1)
        _MainTex ("Base (RGB)", 2D) = "white" {}
        _OutlineWidth ("Outline Width", Range (.002, 0.03)) = .005
    }
    SubShader
    {
        Tags { "Queue" = "Overlay" }
        Pass
        {
            Name "OUTLINE"
            Tags { "LightMode" = "Always" }
            ZWrite Off
            ZTest Always
            Cull Front
            ColorMask RGB
            
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"
            
            struct appdata_t
            {
                float4 vertex : POSITION;
                float2 texcoord : TEXCOORD0;
            };
            
            struct v2f
            {
                float4 pos : SV_POSITION;
                float2 uv : TEXCOORD0;
            };
            
            float _OutlineWidth;
            
            v2f vert(appdata_t v)
            {
                v2f o;
                o.pos = UnityObjectToClipPos(v.vertex);
                o.uv = v.texcoord;
                return o;
            }
            
            half4 frag(v2f i) : SV_Target
            {
                half4 col = _OutlineColor;
                return col;
            }
            ENDCG
        }
        
        Pass
        {
            Name "BASE"
            Tags { "LightMode" = "Always" }
            
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"
            
            struct appdata_t
            {
                float4 vertex : POSITION;
                float2 texcoord : TEXCOORD0;
            };
            
            struct v2f
            {
                float4 pos : SV_POSITION;
                float2 uv : TEXCOORD0;
            };
            
            float4 _MainTex_ST;
            
            v2f vert(appdata_t v)
            {
                v2f o;
                o.pos = UnityObjectToClipPos(v.vertex);
                o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
                return o;
            }
            
            half4 frag(v2f i) : SV_Target
            {
                half4 col = tex2D(_MainTex, i.uv);
                return col;
            }
            ENDCG
        }
    }
}