Shader "Unlit URP Shader"
{
    Properties
    {
        //_BaseColor("Base Color",color) = (1,1,1,1)
        _MainTex("MainTex", 2D) = "white" {}
    }
 
    SubShader
    {
        Tags { "Queue"="Geometry" "RenderType" = "Opaque" "IgnoreProjector" = "True" "RenderPipeline" = "UniversalPipeline" }
        LOD 100
 
        Pass
        {
            Name "Unlit"
            HLSLPROGRAM

            #pragma vertex vert
            #pragma fragment frag
            #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
 
 
            struct Attributes
            {
                float4 positionOS       : POSITION;
                float2 uv               : TEXCOORD0;
            };
 
            struct Varyings
            {
                float4 positionCS       : SV_POSITION;
                float2 uv               : TEXCOORD0;
                float fogCoord          : TEXCOORD1;
            };
 

            TEXTURE2D (_MainTex);SAMPLER(sampler_MainTex);
            float _BurStength;
 
            Varyings vert(Attributes v)
            {
                Varyings o = (Varyings)0;
 
                o.positionCS = TransformObjectToHClip(v.positionOS.xyz);
                o.uv = v.uv;//TRANSFORM_TEX(v.uv, _BaseMap);
 
                return o;
            }
 
            half4 frag(Varyings i) : SV_Target
            {
                float2 offset= 1/i.positionCS.xy;
                half3 baseMap = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv);
                baseMap += SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv+offset*float2(0,1)*_BurStength);
                baseMap += SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv+offset*float2(1,0)*_BurStength);
                baseMap += SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv+offset*float2(0,-1)*_BurStength);
                baseMap += SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.uv+offset*float2(-1,0)*_BurStength);
                
                return float4(baseMap*0.2,1);
            }
            ENDHLSL
        }
    }
}