Shader "zzwater/testshader"
{
    Properties
    {
        _MainTex ("Albedo (RGB)", 2D) = "white" {}
    }

    SubShader
    {
        Tags 
        { 
            "RenderType" = "Opaque"
            "RenderPipeline" = "UniversalPipeline"
            "UniversalMaterialType" = "Lit"
            "IgnoreProjector" = "True"
        }
        LOD 300

        Pass
        {
            Name "ForwardLit"
            Tags { "LightMode" = "UniversalForward" }
            ZCLIP On
            
            HLSLPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #pragma multi_compile _ _MAIN_LIGHT_SHADOWS
            
            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"

            sampler2D _MainTex;
            float4 _MainTex_ST;

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

            struct Varyings
            {
                float4 positionHCS : SV_POSITION;
                float2 uv : TEXCOORD0;
                float3 phase: TEXTCOORD1;
            };

            Varyings vert (Attributes v)
            {
                Varyings o;
                float4x4 mx = GetObjectToWorldMatrix();
                o.positionHCS = TransformObjectToHClip(v.positionOS);
                float factor = dot(float3(mx[0].w, mx[1].w, mx[2].w), 1);
                o.phase = sin(_Time.y * factor);
                o.uv = TRANSFORM_TEX(v.uv, _MainTex);
                return o;
            }

            half4 frag (Varyings i) : SV_Target
            {
                half4 albedo = tex2D(_MainTex, i.uv);
                clip(albedo.a - 0.5);
                return float4(i.phase.xxx, 1);
            }
            ENDHLSL
        }
    }
}