Shader "Custom/URP Transparent Diffuse" {
	Properties {
		_MainTex("Base (RGB)", 2D) = "white" {}
		_Color("Main Color", Color) = (1,1,1,1)
		_Glossiness("Smoothness", Range(0,1)) = 0.5
		_Metallic("Metallic", Range(0,1)) = 0.0
		_BumpMap("Normalmap", 2D) = "bump" {}
		_TransparentAmount("Transparent Amount", Float) = 1
		_StippleSize("Stipple Size", Float) = 1
	}
	SubShader {
		Tags { "RenderType"="Transparent" "Queue"="Transparent" }
		LOD 200
		Cull Off
		Blend SrcAlpha OneMinusSrcAlpha
		Pass {
			Name "FORWARD"
			HLSLPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			#pragma multi_compile_fog
			#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"

			struct Attributes {
				float4 positionOS : POSITION;
				float2 uv : TEXCOORD0;
				float2 uv2 : TEXCOORD1;
				float3 normalOS : NORMAL;
				float4 tangentOS : TANGENT;
			};

			struct Varyings {
				float4 positionCS : SV_POSITION;
				float2 uv : TEXCOORD0;
				float2 uv2 : TEXCOORD1;
				float3 normalWS : TEXCOORD2;
				float4 screenPos : TEXCOORD3;
				float3 tangentWS : TEXCOORD4;
				float3 bitangentWS : TEXCOORD5;
			};

			CBUFFER_START(UnityPerMaterial)
				float4 _MainTex_ST;
				float4 _Color;
				float _Glossiness;
				float _Metallic;
				float _TransparentAmount;
				float _StippleSize;
			CBUFFER_END

			TEXTURE2D(_MainTex); SAMPLER(sampler_MainTex);
			TEXTURE2D(_BumpMap); SAMPLER(sampler_BumpMap);

			Varyings vert(Attributes IN) {
				Varyings OUT;
				OUT.positionCS = TransformObjectToHClip(IN.positionOS.xyz);
				OUT.uv = TRANSFORM_TEX(IN.uv, _MainTex);
				OUT.uv2 = IN.uv2;
				OUT.normalWS = TransformObjectToWorldNormal(IN.normalOS);
				OUT.tangentWS = TransformObjectToWorldDir(IN.tangentOS.xyz);
				OUT.bitangentWS = cross(OUT.normalWS, OUT.tangentWS) * IN.tangentOS.w;
				OUT.screenPos = ComputeScreenPos(OUT.positionCS);
				return OUT;
			}

			float4 frag(Varyings IN) : SV_Target {
				float4 albedo = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, IN.uv) * _Color;
				float3 normalTS = UnpackNormal(SAMPLE_TEXTURE2D(_BumpMap, sampler_BumpMap, IN.uv));
				float3x3 TBN = float3x3(normalize(IN.tangentWS), normalize(IN.bitangentWS), normalize(IN.normalWS));
				float3 normalWS = mul(normalTS, TBN);

				float alpha = albedo.a * _TransparentAmount;
				if (alpha <= 0.01)
					discard;

				float3 color = albedo.rgb;
				return float4(color, alpha);
			}
			ENDHLSL
		}
	}
	FallBack "Universal Forward"
}