Shader "Boke/Addmul" {
	Properties {
		[HideInInspector] _AlphaCutoff ("Alpha Cutoff ", Range(0, 1)) = 0.5
		[HideInInspector] _EmissionColor ("Emission Color", Vector) = (1,1,1,1)
		[ASEBegin] _Color ("Color", Vector) = (1,1,1,1)
		_MainTex ("Main Tex", 2D) = "white" {}
		_qd ("qd", Float) = 1
		[ASEEnd] _opacity ("opacity", Float) = 0.5
		[HideInInspector] _texcoord ("", 2D) = "white" {}
		[Enum(Off,0,Front,1,Back,2)] __CullMode ("CullMode(Back时背面看不见，Off时双面可见)", Float) = 0
		[Enum(Off,0,On,1)] __ZWrite ("ZWrite(开启时，会写入深度)", Float) = 0
		[Enum(UnityEngine.Rendering.CompareFunction)] _StencilComp ("StencilComp(模板测试的比较方法)", Float) = 0
		// --- UI 遮罩：uGUI MaskableGraphic / UIParticle 依赖以下属性名，勿改名 ---
		_Stencil ("Stencil ID", Float) = 0
		[Enum(UnityEngine.Rendering.StencilOp)] _StencilOp ("Stencil Operation", Float) = 0
		_StencilReadMask ("Stencil Read Mask", Float) = 255
		_StencilWriteMask ("Stencil Write Mask", Float) = 255
		_ColorMask ("Color Mask", Float) = 15
		// --- 兼容旧的模板测试命名（保留声明，避免旧材质缺属性）---
		_StencilRef ("StencilRef(模板测试时的参考值)", Float) = 0
		[Enum(UnityEngine.Rendering.StencilOp)] _StencilPassOp ("StenciPassOp(模板测试成功时的操作)", Float) = 0
		[Enum(UnityEngine.Rendering.StencilOp)] _StencilFailOp ("StenciFailOp(模板测试失败时的操作)", Float) = 0
	}
	SubShader {
        Tags { 
            "RenderType" = "Transparent" 
            "Queue" = "Transparent" 
            "RenderPipeline" = "UniversalPipeline"
            "IgnoreProjector" = "True"
        }
        LOD 100

        Cull [__CullMode]
        ZWrite [__ZWrite]
        Blend SrcAlpha One
        ColorMask [_ColorMask]
        ZTest LEqual

        Stencil {
            Ref [_Stencil]
            Comp [_StencilComp]
            Pass [_StencilOp]
            ReadMask [_StencilReadMask]
            WriteMask [_StencilWriteMask]
        }

        Pass {
            Name "ForwardLit"
            Tags { "LightMode" = "UniversalForward" }

            HLSLPROGRAM
            #pragma target 2.0
            #pragma vertex vert
            #pragma fragment frag
            #pragma multi_compile_instancing

            #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"

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

            struct Varyings {
                float4 positionCS : SV_POSITION;
                float2 uv         : TEXCOORD0;
                float4 color      : COLOR;
                UNITY_VERTEX_OUTPUT_STEREO
            };

            TEXTURE2D(_MainTex);
            SAMPLER(sampler_MainTex);

            CBUFFER_START(UnityPerMaterial)
                float4 _MainTex_ST;
                half4 _Color;
                half _qd;
                half _opacity;
            CBUFFER_END

            Varyings vert(Attributes input) {
                Varyings output = (Varyings)0;
                UNITY_SETUP_INSTANCE_ID(input);
                UNITY_TRANSFER_INSTANCE_ID(input, output);
                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
                output.positionCS = TransformObjectToHClip(input.positionOS.xyz);
                output.uv = TRANSFORM_TEX(input.uv, _MainTex);
                output.color = input.color;
                return output;
            }

            half4 frag(Varyings input) : SV_Target {
                half4 mainTexCol = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, input.uv);

                half3 finalRGB = mainTexCol.rgb * _Color.rgb * input.color.rgb;
                finalRGB *= _qd;

                // 加深：补偿 Additive 混合带来的发白，提升色彩饱和度
                half luma = dot(finalRGB, half3(0.299, 0.587, 0.114));
                finalRGB = lerp(luma.xxx, finalRGB, 1.2);

                half finalAlpha = mainTexCol.a * _opacity * input.color.a;

                clip(finalAlpha - 0.001h);

                return half4(finalRGB, finalAlpha);
            }
            ENDHLSL
        }
    }
}