// Outline shader variant of "Spine/SkeletonGraphic"

Shader "Spine/Outline/SkeletonGraphic"
{
	Properties
	{
		[PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
		[Toggle(_STRAIGHT_ALPHA_INPUT)] _StraightAlphaInput("Straight Alpha Texture", Int) = 0
		[Toggle(_CANVAS_GROUP_COMPATIBLE)] _CanvasGroupCompatible("CanvasGroup Compatible", Int) = 0
		_Color ("Tint", Color) = (1,1,1,1)

		[HideInInspector][Enum(UnityEngine.Rendering.CompareFunction)] _StencilComp ("Stencil Comparison", Float) = 8
		[HideInInspector] _Stencil ("Stencil ID", Float) = 0
		[HideInInspector][Enum(UnityEngine.Rendering.StencilOp)] _StencilOp ("Stencil Operation", Float) = 0
		[HideInInspector] _StencilWriteMask ("Stencil Write Mask", Float) = 255
		[HideInInspector] _StencilReadMask ("Stencil Read Mask", Float) = 255

		[HideInInspector] _ColorMask ("Color Mask", Float) = 15

		[Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0

		// 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
	}

	SubShader
	{
		Tags
		{
			"Queue"="Transparent"
			"IgnoreProjector"="True"
			"RenderType"="Transparent"
			"PreviewType"="Plane"
			"CanUseSpriteAtlas"="True"
		}

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

		Cull Off
		Lighting Off
		ZWrite Off
		ZTest [unity_GUIZTestMode]
		Fog { Mode Off }
		Blend One OneMinusSrcAlpha
		ColorMask [_ColorMask]

		Pass {
			Name "Outline"
			CGPROGRAM
			#pragma vertex vertOutlineGraphic
			#pragma fragment fragOutline
			#define SKELETON_GRAPHIC
			#pragma shader_feature _ _USE8NEIGHBOURHOOD_ON
			#include "../CGIncludes/Spine-Outline-Pass.cginc"
			ENDCG
		}

		UsePass "Spine/SkeletonGraphic/NORMAL"
	}
	FallBack "Spine/SkeletonGraphic"
	CustomEditor "SpineShaderWithOutlineGUI"
}