DataStudy/Assets/GameMain/Shader/BackBlur.shader

Shader "Custom/FrontBlur" {
	Properties
	{
	[PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {}
	_Color("Tint", Color) = (1,1,1,1)

	[HideInInspector]_StencilComp("Stencil Comparison", Float) = 8
	[HideInInspector]_Stencil("Stencil ID", Float) = 0
	[HideInInspector]_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

	_Size("Size", Range(0, 50)) = 5
	}

		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]
	Blend SrcAlpha OneMinusSrcAlpha
	ColorMask[_ColorMask]

	Pass
	{
	Name "FrontBlurHor"
	CGPROGRAM
	#pragma vertex vert
	#pragma fragment frag
	#pragma target 2.0

	#include "UnityCG.cginc"
	#include "UnityUI.cginc"

	#pragma multi_compile __ UNITY_UI_ALPHACLIP

	struct appdata_t
	{
	float4 vertex : POSITION;
	float4 color : COLOR;
	float2 texcoord : TEXCOORD0;
	UNITY_VERTEX_INPUT_INSTANCE_ID
	};

	struct v2f
	{
	float4 vertex : SV_POSITION;
	fixed4 color : COLOR;
	float2 texcoord : TEXCOORD0;
	float4 worldPosition : TEXCOORD1;
	UNITY_VERTEX_OUTPUT_STEREO
	};

	fixed4 _Color;
	fixed4 _TextureSampleAdd;
	float4 _ClipRect;

	v2f vert(appdata_t IN)
	{
	v2f OUT;
	UNITY_SETUP_INSTANCE_ID(IN);
	UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
	OUT.worldPosition = IN.vertex;
	OUT.vertex = UnityObjectToClipPos(OUT.worldPosition);

	OUT.texcoord = IN.texcoord;

	OUT.color = IN.color * _Color;
	return OUT;
	}

	sampler2D _MainTex;
	float4 _MainTex_TexelSize;
	float _Size;

	half4 GrabPixel(v2f i, float weight, float kernelx) {
	if (_Size <= 1 || weight == 0) {
	 return tex2D(_MainTex, half2(i.texcoord.x + _MainTex_TexelSize.x * kernelx * _Size, i.texcoord.y)) * weight;
	}
   else {
   half4 sum = half4(0,0,0,0);
   sum += tex2D(_MainTex, half2(i.texcoord.x + _MainTex_TexelSize.x * kernelx * _Size * 0.2, i.texcoord.y)) * 0.2;
   sum += tex2D(_MainTex, half2(i.texcoord.x + _MainTex_TexelSize.x * kernelx * _Size * 0.4, i.texcoord.y)) * 0.2;
   sum += tex2D(_MainTex, half2(i.texcoord.x + _MainTex_TexelSize.x * kernelx * _Size * 0.6, i.texcoord.y)) * 0.2;
   sum += tex2D(_MainTex, half2(i.texcoord.x + _MainTex_TexelSize.x * kernelx * _Size * 0.8, i.texcoord.y)) * 0.2;
   sum += tex2D(_MainTex, half2(i.texcoord.x + _MainTex_TexelSize.x * kernelx * _Size * 1.0, i.texcoord.y)) * 0.2;
   return (sum + _TextureSampleAdd) * weight;
  }
  }

  half4 GrabPixely(v2f i, float weight, float kernely) {
  if (_Size <= 1 || weight == 0) {
   return tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size)) * weight;
  }
 else {
 half4 sum = half4(0,0,0,0);
 sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 0.2)) * 0.2;
 sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 0.4)) * 0.2;
 sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 0.6)) * 0.2;
 sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 0.8)) * 0.2;
 sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 1.0)) * 0.2;
 return (sum + _TextureSampleAdd) * weight;
}
}

fixed4 frag(v2f IN) : SV_Target
{
half4 sum = half4(0,0,0,0);
// #define GRABPIXEL(weight, kernelx) (tex2D(_MainTex, half2(IN.texcoord.x + _MainTex_TexelSize.x * kernelx*_Size, IN.texcoord.y)) + _TextureSampleAdd) * weight

// sum += GrabPixel(IN, 0.05, -4.0);
// sum += GrabPixel(IN, 0.09, -3.0);
// sum += GrabPixel(IN, 0.12, -2.0);
// sum += GrabPixel(IN, 0.15, -1.0);
// sum += GrabPixel(IN, 0.18, 0.0);
// sum += GrabPixel(IN, 0.15, +1.0);
// sum += GrabPixel(IN, 0.12, +2.0);
// sum += GrabPixel(IN, 0.09, +3.0);
// sum += GrabPixel(IN, 0.05, +4.0);

for (int i = 0; i < 9; i++) {
 sum += GrabPixel(IN, 1.0 / 9, i - 4.0);
}

// half4 sumy = half4(0,0,0,0);
// for(int i=0;i<15;i++){
// sumy += GrabPixely(IN, 1.0/15, i-7.0);
// }
// half4 sum = (sumx + sumy) * 0.5;

// sum += GrabPixel(IN, 0.01, -9.0);
// sum += GrabPixel(IN, 0.02, -8.0);
// sum += GrabPixel(IN, 0.03, -7.0);
// sum += GrabPixel(IN, 0.04, -6.0);
// sum += GrabPixel(IN, 0.05, -5.0);
// sum += GrabPixel(IN, 0.06, -4.0);
// sum += GrabPixel(IN, 0.07, -3.0);
// sum += GrabPixel(IN, 0.08, -2.0);
// sum += GrabPixel(IN, 0.09, -1.0);
// sum += GrabPixel(IN, 0.10, 0.0);
// sum += GrabPixel(IN, 0.09, +1.0);
// sum += GrabPixel(IN, 0.08, +2.0);
// sum += GrabPixel(IN, 0.07, +3.0);
// sum += GrabPixel(IN, 0.06, +4.0);
// sum += GrabPixel(IN, 0.05, +5.0);
// sum += GrabPixel(IN, 0.04, +6.0);
// sum += GrabPixel(IN, 0.03, +7.0);
// sum += GrabPixel(IN, 0.02, +8.0);
// sum += GrabPixel(IN, 0.01, +9.0);

sum = sum * IN.color;
sum.a *= UnityGet2DClipping(IN.worldPosition.xy, _ClipRect);
#ifdef UNITY_UI_ALPHACLIP
clip(sum.a - 0.001);
#endif
return sum;

// float distance = _Distance;

// fixed4 color = (tex2D(_MainTex, IN.texcoord) + _TextureSampleAdd) * IN.color;

// color += (tex2D(_MainTex, half2(IN.texcoord.x + distance, IN.texcoord.y + distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x + distance, IN.texcoord.y)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x + distance, IN.texcoord.y - distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x, IN.texcoord.y - distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x - distance, IN.texcoord.y - distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x - distance, IN.texcoord.y)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x - distance, IN.texcoord.y + distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x, IN.texcoord.y + distance)) + _TextureSampleAdd) * IN.color;
// color /= 9;

// color.a *= UnityGet2DClipping(IN.worldPosition.xy, _ClipRect);

// #ifdef UNITY_UI_ALPHACLIP
// clip (color.a - 0.001);
// #endif

// return color;
}
ENDCG
}
Pass
{
Name "FrontBlurVer"
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma target 2.0

#include "UnityCG.cginc"
#include "UnityUI.cginc"

#pragma multi_compile __ UNITY_UI_ALPHACLIP

struct appdata_t
{
float4 vertex : POSITION;
float4 color : COLOR;
float2 texcoord : TEXCOORD0;
UNITY_VERTEX_INPUT_INSTANCE_ID
};

struct v2f
{
float4 vertex : SV_POSITION;
fixed4 color : COLOR;
float2 texcoord : TEXCOORD0;
float4 worldPosition : TEXCOORD1;
UNITY_VERTEX_OUTPUT_STEREO
};

fixed4 _Color;
fixed4 _TextureSampleAdd;
float4 _ClipRect;

v2f vert(appdata_t IN)
{
v2f OUT;
UNITY_SETUP_INSTANCE_ID(IN);
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
OUT.worldPosition = IN.vertex;
OUT.vertex = UnityObjectToClipPos(OUT.worldPosition);

OUT.texcoord = IN.texcoord;

OUT.color = IN.color * _Color;
return OUT;
}

sampler2D _MainTex;
float4 _MainTex_TexelSize;
float _Size;

half4 GrabPixel(v2f i, float weight, float kernely) {
if (_Size <= 1 || weight == 0) {
 return tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size)) * weight;
}
else {
half4 sum = half4(0,0,0,0);
sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 0.2)) * 0.2;
sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 0.4)) * 0.2;
sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 0.6)) * 0.2;
sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 0.8)) * 0.2;
sum += tex2D(_MainTex, half2(i.texcoord.x, i.texcoord.y + _MainTex_TexelSize.y * kernely * _Size * 1.0)) * 0.2;
return (sum + _TextureSampleAdd) * weight;
}
}

fixed4 frag(v2f IN) : SV_Target
{
half4 sum = half4(0,0,0,0);
// #define GRABPIXEL(weight, kernely) (tex2D(_MainTex, half2(IN.texcoord.x, IN.texcoord.y + _MainTex_TexelSize.y * kernely*_Size)) + _TextureSampleAdd) * weight

// sum += GrabPixel(IN, 0.05, -4.0);
// sum += GrabPixel(IN, 0.09, -3.0);
// sum += GrabPixel(IN, 0.12, -2.0);
// sum += GrabPixel(IN, 0.15, -1.0);
// sum += GrabPixel(IN, 0.18, 0.0);
// sum += GrabPixel(IN, 0.15, +1.0);
// sum += GrabPixel(IN, 0.12, +2.0);
// sum += GrabPixel(IN, 0.09, +3.0);
// sum += GrabPixel(IN, 0.05, +4.0);

for (int i = 0; i < 9; i++) {
 sum += GrabPixel(IN, 1.0 / 9, i - 4.0);
}

// sum += GrabPixel(IN, 0.01, -9.0);
// sum += GrabPixel(IN, 0.02, -8.0);
// sum += GrabPixel(IN, 0.03, -7.0);
// sum += GrabPixel(IN, 0.04, -6.0);
// sum += GrabPixel(IN, 0.05, -5.0);
// sum += GrabPixel(IN, 0.06, -4.0);
// sum += GrabPixel(IN, 0.07, -3.0);
// sum += GrabPixel(IN, 0.08, -2.0);
// sum += GrabPixel(IN, 0.09, -1.0);
// sum += GrabPixel(IN, 0.10, 0.0);
// sum += GrabPixel(IN, 0.09, +1.0);
// sum += GrabPixel(IN, 0.08, +2.0);
// sum += GrabPixel(IN, 0.07, +3.0);
// sum += GrabPixel(IN, 0.06, +4.0);
// sum += GrabPixel(IN, 0.05, +5.0);
// sum += GrabPixel(IN, 0.04, +6.0);
// sum += GrabPixel(IN, 0.03, +7.0);
// sum += GrabPixel(IN, 0.02, +8.0);
// sum += GrabPixel(IN, 0.01, +9.0);

sum = sum * IN.color;
sum.a *= UnityGet2DClipping(IN.worldPosition.xy, _ClipRect);
#ifdef UNITY_UI_ALPHACLIP
clip(sum.a - 0.001);
#endif
return sum;

// float distance = _Distance;

// fixed4 color = (tex2D(_MainTex, IN.texcoord) + _TextureSampleAdd) * IN.color;

// color += (tex2D(_MainTex, half2(IN.texcoord.x + distance, IN.texcoord.y + distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x + distance, IN.texcoord.y)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x + distance, IN.texcoord.y - distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x, IN.texcoord.y - distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x - distance, IN.texcoord.y - distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x - distance, IN.texcoord.y)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x - distance, IN.texcoord.y + distance)) + _TextureSampleAdd) * IN.color;
// color += (tex2D(_MainTex, half2(IN.texcoord.x, IN.texcoord.y + distance)) + _TextureSampleAdd) * IN.color;
// color /= 9;

// color.a *= UnityGet2DClipping(IN.worldPosition.xy, _ClipRect);

// #ifdef UNITY_UI_ALPHACLIP
// clip (color.a - 0.001);
// #endif

// return color;
}
ENDCG
}
	}
}