最简URP Shader

Shader "URPShaderStudy/BaseURPShader"
{
    Properties
    {
        _Color("Color(RGB)",Color) = (1,1,1,1)
        _MainTex("MainTex",2D) = "gary"{}
    }

    SubShader
    {
        Tags
        {
            "RenderPipeline"="UniversalPipeline"
            "RenderType"="Opaque"
            "Queue"="Geometry+0"
        }
        
        Pass
        {
            Name "Pass"
            Tags {}
            
            Blend One Zero, One Zero
            Cull Back
            ZTest LEqual
            ZWrite On

            HLSLPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma prefer_hlslcc gles
            #pragma exclude_renderers d3d11_9x
            #pragma target 2.0
            #pragma multi_compile_instancing

            #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/ShaderGraphFunctions.hlsl"
            #include "Packages/com.unity.shadergraph/ShaderGraphLibrary/ShaderVariablesFunctions.hlsl"
            
            CBUFFER_START(UnityPerMaterial)
            half4 _Color;
            CBUFFER_END

            TEXTURE2D(_MainTex);
            float4 _MainTex_ST;

            #define smp SamplerState_Point_Repeat
            SAMPLER(smp);

            struct Attributes
            {
                float3 positionOS : POSITION;
                float2 uv :TEXCOORD0;
            };
            
            struct Varyings
            {
                float4 positionCS : SV_POSITION;
                float2 uv :TEXCOORD0;
            };
            
            Varyings vert(Attributes v)
            {
                Varyings o = (Varyings)0;
                o.uv = TRANSFORM_TEX(v.uv,_MainTex);
                o.positionCS = TransformObjectToHClip(v.positionOS);
                return o;
            }

            half4 frag(Varyings i) : SV_TARGET 
            {    
                half4 mainTex = SAMPLE_TEXTURE2D(_MainTex,smp,i.uv);
                half4 c = _Color * mainTex;
                return c;
            }
            ENDHLSL
        }
    }
    FallBack "Hidden/Shader Graph/FallbackError"
}