투명디스플레이 연구사업

// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

Shader "Custom/BlurShader2" {

    Properties {

        _MainTex ("Base (RGB)", 2D) = "white" {}

	    _BlurSizeXY("BlurSizeXY", Range(0,10)) = 0

    }

	CGINCLUDE

	#include "UnityCG.cginc"

    sampler2D _MainTex;

    float _BlurSizeXY;

	struct data {

	    float4 vertex : POSITION;

	    float3 normal : NORMAL;

	};

	struct v2f {

	    float4 position : POSITION;

	    float4 screenPos : TEXCOORD0;

	};

	v2f vert(data i)

	{

	    v2f o;

	    o.position = UnityObjectToClipPos(i.vertex);

	    o.screenPos = o.position;

	    return o;

	}

	half4 frag( v2f i ) : COLOR

	{

	    float2 screenPos = i.screenPos.xy / i.screenPos.w;

		float depth = _BlurSizeXY * 0.0005;

	    screenPos.x = (screenPos.x + 1) * 0.5;

	    screenPos.y = 1 - (screenPos.y + 1) * 0.5;

	    half4 sum = half4(0.0h,0.0h,0.0h,0.0h);   

	    sum += tex2D( _MainTex, float2(screenPos.x-5.0 * depth, screenPos.y+5.0 * depth)) * 0.025;    

	    sum += tex2D( _MainTex, float2(screenPos.x+5.0 * depth, screenPos.y-5.0 * depth)) * 0.025;

	    sum += tex2D( _MainTex, float2(screenPos.x-4.0 * depth, screenPos.y+4.0 * depth)) * 0.05;

	    sum += tex2D( _MainTex, float2(screenPos.x+4.0 * depth, screenPos.y-4.0 * depth)) * 0.05;

	    sum += tex2D( _MainTex, float2(screenPos.x-3.0 * depth, screenPos.y+3.0 * depth)) * 0.09;

	    sum += tex2D( _MainTex, float2(screenPos.x+3.0 * depth, screenPos.y-3.0 * depth)) * 0.09;

	    sum += tex2D( _MainTex, float2(screenPos.x-2.0 * depth, screenPos.y+2.0 * depth)) * 0.12;

	    sum += tex2D( _MainTex, float2(screenPos.x+2.0 * depth, screenPos.y-2.0 * depth)) * 0.12;

	    sum += tex2D( _MainTex, float2(screenPos.x-1.0 * depth, screenPos.y+1.0 * depth)) *  0.15;

	    sum += tex2D( _MainTex, float2(screenPos.x+1.0 * depth, screenPos.y-1.0 * depth)) *  0.15;

	    sum += tex2D( _MainTex, screenPos-5.0 * depth) * 0.025;    

	    sum += tex2D( _MainTex, screenPos-4.0 * depth) * 0.05;

	    sum += tex2D( _MainTex, screenPos-3.0 * depth) * 0.09;

	    sum += tex2D( _MainTex, screenPos-2.0 * depth) * 0.12;

	    sum += tex2D( _MainTex, screenPos-1.0 * depth) * 0.15;    

	    sum += tex2D( _MainTex, screenPos) * 0.16;

	    sum += tex2D( _MainTex, screenPos+5.0 * depth) * 0.15;

	    sum += tex2D( _MainTex, screenPos+4.0 * depth) * 0.12;

	    sum += tex2D( _MainTex, screenPos+3.0 * depth) * 0.09;

	    sum += tex2D( _MainTex, screenPos+2.0 * depth) * 0.05;

	    sum += tex2D( _MainTex, screenPos+1.0 * depth) * 0.025;

		return sum / 2;

	}

	ENDCG

	SubShader {

		ZTest Always Cull Off ZWrite Off

		pass {

			CGPROGRAM

			#pragma vertex vert

			#pragma fragment frag

			#pragma target 3.0

			ENDCG

		}

	}

}