unity shader URP下的类动森地面弯曲 简单实现

学习过程中的记录

Shader "curve_code"
{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
        _CurveY("curve_Y",Range(-0.2,0.2))=0.03
            _CurveX("curve_X",Range(-0.2,0.2)) = 0.03
    }
    SubShader
    {
        Tags { "RenderType"="Opaque"
        "RenderPipeline" = "UniversalRenderPipeline"}
        

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


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

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

            sampler2D _MainTex;
            float4 _MainTex_S