Shader "Zhanyou/Character/PlayerWing"
{
	Properties
	{
		_MainTex("Main Tex", 2D) = "white" {}
		_Color ("Color", Color) = (1, 1, 1, 1)
		_Emission ("Emission", Range(0, 1)) = 0
		// 流光贴图
		_FlowTex ("Flow (RGB)", 2D) = "black" {}
		// 流光颜色
		_FlowColor ("Flow Color", Color) = (1, 1, 1, 1)
		// 流光速度u
		_FlowSpeedU ("Flow Speed U", Float) = 1
		// 流光速度v
		_FlowSpeedV ("Flow Speed V", Float) = 0
		// 流光角度 - 0到360度
		_FlowRadian ("Flow Direction", Range(0, 6.283)) = 0
	}

	Category
	{
		Tags { "Queue"="AlphaTest+52" "IgnoreProjector"="True" "RenderType"="CharacterCutout" }
		Blend SrcAlpha OneMinusSrcAlpha
		Cull Back
		Lighting Off
		ZWrite Off
		ZTest LEqual
		Offset 0, -0.01
		SubShader
		{
			Pass
			{
				CGPROGRAM
				#pragma vertex vert
				#pragma fragment frag
				#pragma multi_compile_fog
				#include "UnityCG.cginc"
				#include "FlowColorBase.cginc"
	
				uniform sampler2D _MainTex;
				uniform float4 _MainTex_ST;
				uniform half4 _Color;
                uniform sampler2D _FlowTex;
		        uniform half4 _FlowTex_ST;
		        uniform half4 _FlowColor;
		        uniform float _FlowSpeedU;
		        uniform float _FlowSpeedV;
		        uniform float _FlowRadian;
				uniform float _Emission;
				
				struct appdata_t {
					float4 vertex : POSITION;
					float2 texcoord : TEXCOORD0;
				};
	
				struct v2f {
					float4 vertex : SV_POSITION;
					float2 texcoord : TEXCOORD0;
					float2 flowUv : TEXCOORD1;
					UNITY_FOG_COORDS(2)
				};

				v2f vert (appdata_t v)
				{
					v2f o;
					o.vertex = UnityObjectToClipPos(v.vertex);
					o.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
					float flowSin = sin(_FlowRadian);
					float flowCos = cos(_FlowRadian);
					o.flowUv = float2(flowCos * v.texcoord.x - flowSin * v.texcoord.y, flowSin * v.texcoord.x + flowCos * v.texcoord.y);
					o.flowUv = TRANSFORM_TEX(o.flowUv, _FlowTex) + float2(_FlowSpeedU, _FlowSpeedV) * _Time.y;
					UNITY_TRANSFER_FOG(o, o.vertex);
					return o;
				}
				
				fixed4 frag (v2f i) : SV_Target
				{
					fixed4 c = tex2D(_MainTex, i.texcoord);
					c.rgb *= _Color.rgb;
					c.rgb *= 1 + _Emission;
					c.a *= _Color.a;
		            fixed4 flowCol = tex2D(_FlowTex, i.flowUv);
		            flowCol *= _FlowColor;
		            c.rgb += flowCol.rgb * flowCol.a;
					UNITY_APPLY_FOG(i.fogCoord, c);
					return c;
				}
				ENDCG
			}
		}
		CustomEditor "FlowToggleShaderGui"
		Fallback "Unlit/Texture"
	}
}