// - Vertex Lit + ShadowCaster
// - Premultiplied Alpha Blending (Optional straight alpha input)
// - Double-sided, ZWrite

Shader "Spine/Skeleton Lit ZWrite Bill" {
	Properties {
		_Cutoff ("Depth alpha cutoff", Range(0,1)) = 0.1
		_ShadowAlphaCutoff ("Shadow alpha cutoff", Range(0,1)) = 0.1
		[NoScaleOffset] _MainTex ("Main Texture", 2D) = "black" {}
		[Toggle(_STRAIGHT_ALPHA_INPUT)] _StraightAlphaInput("Straight Alpha Texture", Int) = 0
		[Toggle(_DOUBLE_SIDED_LIGHTING)] _DoubleSidedLighting("Double-Sided Lighting", Int) = 0
		[HideInInspector] _StencilRef("Stencil Reference", Float) = 1.0
		[HideInInspector][Enum(UnityEngine.Rendering.CompareFunction)] _StencilComp("Stencil Comparison", Float) = 8 // Set to Always as default

		// Outline properties are drawn via custom editor.
		[HideInInspector] _OutlineWidth("Outline Width", Range(0,8)) = 3.0
		[HideInInspector] _OutlineColor("Outline Color", Color) = (1,1,0,1)
		[HideInInspector] _OutlineReferenceTexWidth("Reference Texture Width", Int) = 1024
		[HideInInspector] _ThresholdEnd("Outline Threshold", Range(0,1)) = 0.25
		[HideInInspector] _OutlineSmoothness("Outline Smoothness", Range(0,1)) = 1.0
		[HideInInspector][MaterialToggle(_USE8NEIGHBOURHOOD_ON)] _Use8Neighbourhood("Sample 8 Neighbours", Float) = 1
		[HideInInspector] _OutlineMipLevel("Outline Mip Level", Range(0,3)) = 0

		_ScaleX("Scale X", Float) = 1.0
		_ScaleY("Scale Y", Float) = 1.0
	}

	SubShader {
		Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" }
		LOD 100

		Stencil {
			Ref[_StencilRef]
			Comp[_StencilComp]
			Pass Keep
		}

		Pass {
			Name "Normal"

			Tags { "LightMode"="Vertex" "Queue"="Transparent" "IgnoreProjector"="true" "RenderType"="Transparent" }

			ZWrite On
			Cull Off
			Blend One OneMinusSrcAlpha

			CGPROGRAM
			#pragma shader_feature _ _STRAIGHT_ALPHA_INPUT
			#pragma shader_feature _ _DOUBLE_SIDED_LIGHTING
			//#pragma vertex vertBill
			#pragma vertex vert
			#pragma fragment frag
			#pragma target 2.0

			#define _ALPHA_CLIP
			#pragma multi_compile __ POINT SPOT
			#include "CGIncludes/Spine-Skeleton-Lit-Common.cginc"
			ENDCG
	 	}

		Pass {
			Name "Caster"
			Tags { "LightMode"="ShadowCaster" }
			Offset 1, 1

			Fog { Mode Off }
			ZWrite On
			ZTest LEqual
			Cull Off
			Lighting Off

			CGPROGRAM
			#pragma vertex vertShadow
			#pragma fragment fragShadow
			#pragma multi_compile_shadowcaster
			#pragma fragmentoption ARB_precision_hint_fastest

			#define SHADOW_CUTOFF _ShadowAlphaCutoff
			#include "CGIncludes/Spine-Skeleton-Lit-Common-Shadow.cginc"

			ENDCG
		}

		//Pass {
		//	 CGPROGRAM

		//	 #pragma vertex vert 
		//	 #pragma fragment frag

		//	 // User-specified uniforms           
		//	 uniform sampler2D _MainTex;
		//	 uniform float _ScaleX;
		//	 uniform float _ScaleY;

		//	 struct vertexInput {
		//		float4 vertex : POSITION;
		//		float4 tex : TEXCOORD0;
		//	 };

		//	 struct vertexOutput {

		//		float4 pos : SV_POSITION;
		//		float4 tex : TEXCOORD0;

		//	 };

		//	 vertexOutput vert(vertexInput input)
		//	 {
		//		vertexOutput output;

		//		output.pos = mul(UNITY_MATRIX_P,
		//		mul(UNITY_MATRIX_MV, float4(0.0, 0.0, 0.0, 1.0)) + float4(input.vertex.x, input.vertex.y, 0.0, 0.0) *  float4(_ScaleX, _ScaleY, 1.0, 1.0));

		//		output.tex = input.tex;

		//		return output;

		//	 }

		//	 float4 frag(vertexOutput input) : COLOR
		//	 {
		//		return tex2D(_MainTex, float2(input.tex.xy));
		//	 }

		//	 ENDCG
		//}
	}
	CustomEditor "SpineShaderWithOutlineGUI"
}