Shader "Spine/Sprite/Pixel Lit"
{
	Properties
	{
		_MainTex ("Main Texture", 2D) = "white" {}
		_Color ("Color", Color) = (1,1,1,1)
		
		_BumpScale("Scale", Float) = 1.0
		_BumpMap ("Normal Map", 2D) = "bump" {}
		
		[MaterialToggle] PixelSnap ("Pixel snap", Float) = 0
		[PerRendererData] _AlphaTex ("External Alpha", 2D) = "white" {}
		[PerRendererData] _EnableExternalAlpha ("Enable External Alpha", Float) = 0
		
		_EmissionColor("Color", Color) = (0,0,0,0)		
		_EmissionMap("Emission", 2D) = "white" {}
		_EmissionPower("Emission Power", Float) = 2.0	
		
		_Glossiness("Smoothness", Range(0.0, 1.0)) = 0.5
		_GlossMapScale("Smoothness Scale", Range(0.0, 1.0)) = 1.0
		[Gamma] _Metallic("Metallic", Range(0.0, 1.0)) = 0.0
		_MetallicGlossMap("Metallic", 2D) = "white" {}
		
		_DiffuseRamp ("Diffuse Ramp Texture", 2D) = "gray" {}
		
		_FixedNormal ("Fixed Normal", Vector) = (0,0,1,1)
		_ZWrite ("Depth Write", Float) = 1.0
		_Cutoff ("Depth alpha cutoff", Range(0,1)) = 0.5
		_ShadowAlphaCutoff ("Shadow alpha cutoff", Range(0,1)) = 0.1
		_CustomRenderQueue ("Custom Render Queue", Float) = 0.0
		
		_OverlayColor ("Overlay Color", Color) = (0,0,0,0)
		_Hue("Hue", Range(-0.5,0.5)) = 0.0	
		_Saturation("Saturation", Range(0,2)) = 1.0	
		_Brightness("Brightness", Range(0,2)) = 1.0	
		
		_RimPower("Rim Power", Float) = 2.0	
		_RimColor ("Rim Color", Color) = (1,1,1,1)
		
		_BlendTex ("Blend Texture", 2D) = "white" {}
		_BlendAmount ("Blend", Range(0,1)) = 0.0
		
		[HideInInspector] _SrcBlend ("__src", Float) = 1.0
		[HideInInspector] _DstBlend ("__dst", Float) = 0.0
		[HideInInspector] _RenderQueue ("__queue", Float) = 0.0
		[HideInInspector] _Cull ("__cull", Float) = 0.0
		[HideInInspector] _StencilRef("Stencil Reference", Float) = 1.0
		[Enum(UnityEngine.Rendering.CompareFunction)] _StencilComp("Stencil Comparison", Float) = 8 // Set to Always as default
	}
	
	SubShader
	{
		Tags { "Queue"="Transparent" "RenderType"="Sprite" "AlphaDepth"="False" "CanUseSpriteAtlas"="True" "IgnoreProjector"="True" }
		LOD 200
		
		Stencil {
			Ref[_StencilRef]
			Comp[_StencilComp]
			Pass Keep
		}

		Pass
		{
			Name "FORWARD" 
			Tags { "LightMode" = "ForwardBase" }
			Blend [_SrcBlend] [_DstBlend]
			ZWrite [_ZWrite]
			ZTest LEqual
			Cull [_Cull]
			
			CGPROGRAM
				#pragma target 3.0
				
				#pragma shader_feature _ _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON _ADDITIVEBLEND _ADDITIVEBLEND_SOFT _MULTIPLYBLEND _MULTIPLYBLEND_X2
				#pragma shader_feature _ _FIXED_NORMALS_VIEWSPACE _FIXED_NORMALS_VIEWSPACE_BACKFACE _FIXED_NORMALS_MODELSPACE  _FIXED_NORMALS_MODELSPACE_BACKFACE
				#pragma shader_feature _ _SPECULAR _SPECULAR_GLOSSMAP
				#pragma shader_feature _NORMALMAP
				#pragma shader_feature _ALPHA_CLIP
				#pragma shader_feature _EMISSION
				#pragma shader_feature _RIM_LIGHTING
				#pragma shader_feature _DIFFUSE_RAMP
				#pragma shader_feature _COLOR_ADJUST
				#pragma shader_feature _TEXTURE_BLEND
				#pragma shader_feature _SPHERICAL_HARMONICS
				#pragma shader_feature _FOG
				
				#pragma multi_compile_fwdbase
				#pragma fragmentoption ARB_precision_hint_fastest
				#pragma multi_compile_fog
				#pragma multi_compile _ PIXELSNAP_ON
				#pragma multi_compile _ ETC1_EXTERNAL_ALPHA
				
				#pragma vertex vert
				#pragma fragment fragBase
				
				#include "CGIncludes/SpritePixelLighting.cginc"	
			ENDCG
		}
		Pass
		{     
			Name "FORWARD_DELTA"
			Tags { "LightMode" = "ForwardAdd" }
			Blend [_SrcBlend] One
			ZWrite Off
			ZTest LEqual
			Cull [_Cull]
			
			CGPROGRAM
				#pragma target 3.0
				
				#pragma shader_feature _ _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON _ADDITIVEBLEND _ADDITIVEBLEND_SOFT _MULTIPLYBLEND _MULTIPLYBLEND_X2
				#pragma shader_feature _ _FIXED_NORMALS_VIEWSPACE _FIXED_NORMALS_VIEWSPACE_BACKFACE _FIXED_NORMALS_MODELSPACE  _FIXED_NORMALS_MODELSPACE_BACKFACE
				#pragma shader_feature _ _SPECULAR _SPECULAR_GLOSSMAP
				#pragma shader_feature _NORMALMAP
				#pragma shader_feature _ALPHA_CLIP	
				#pragma shader_feature _DIFFUSE_RAMP
				#pragma shader_feature _COLOR_ADJUST
				#pragma shader_feature _TEXTURE_BLEND
				#pragma shader_feature _FOG
				
				#pragma multi_compile_fwdadd_fullshadows
				#pragma fragmentoption ARB_precision_hint_fastest
				#pragma multi_compile_fog
				#pragma multi_compile _ PIXELSNAP_ON
				#pragma multi_compile _ ETC1_EXTERNAL_ALPHA
				
				#pragma vertex vert
				#pragma fragment fragAdd
				
				#include "CGIncludes/SpritePixelLighting.cginc"
			ENDCG
		}
		Pass
		{
			Name "ShadowCaster"
			Tags { "LightMode"="ShadowCaster" }
			Offset 1, 1
			
			Fog { Mode Off }
			ZWrite On
			ZTest LEqual
			Cull Off
			Lighting Off
			
			CGPROGRAM		
				#pragma fragmentoption ARB_precision_hint_fastest
				#pragma multi_compile_shadowcaster
				#pragma multi_compile _ PIXELSNAP_ON
				#pragma multi_compile _ ETC1_EXTERNAL_ALPHA
				
				#pragma vertex vert
				#pragma fragment frag
				
				#include "CGIncludes/SpriteShadows.cginc"
			ENDCG
		}
	}
	
	FallBack "Spine/Sprite/Unlit"
	CustomEditor "SpineSpriteShaderGUI"
}