투명디스플레이 연구사업

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

Shader "Custom/BlurShader5" {

	Properties { _MainTex ("", any) = "" {} }

	CGINCLUDE

	#include "UnityCG.cginc"

	struct v2f {

		float4 pos : SV_POSITION;

		half2 uv : TEXCOORD0;

		half2 taps[4] : TEXCOORD1;

	};

	sampler2D _MainTex;

	half4 _MainTex_TexelSize;

	half4 _BlurOffsets;

	v2f vert( appdata_img v ) {

		v2f o;

		o.pos = UnityObjectToClipPos(v.vertex);

		o.uv = v.texcoord - _BlurOffsets.xy * _MainTex_TexelSize.xy; // hack, see BlurEffect.cs for the reason for this. let's make a new blur effect soon

		o.taps[0] = o.uv + _MainTex_TexelSize * _BlurOffsets.xy;

		o.taps[1] = o.uv - _MainTex_TexelSize * _BlurOffsets.xy;

		o.taps[2] = o.uv + _MainTex_TexelSize * _BlurOffsets.xy * half2(1,-1);

		o.taps[3] = o.uv - _MainTex_TexelSize * _BlurOffsets.xy * half2(1,-1);

		return o;

	}

	half4 frag(v2f i) : SV_Target {

		half4 color = tex2D(_MainTex, i.taps[0]);

		color += tex2D(_MainTex, i.taps[1]);

		color += tex2D(_MainTex, i.taps[2]);

		color += tex2D(_MainTex, i.taps[3]);

		return color * 0.25;

	}

	ENDCG

	SubShader {

		 Pass {

			  ZTest Always Cull Off ZWrite Off

			  CGPROGRAM

			  #pragma vertex vert

			  #pragma fragment frag

			  ENDCG

		  }

	}

	Fallback off

}