투명디스플레이 연구사업

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

Shader "Custom/BlurShader3" {

    Properties {

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

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

    }

    SubShader {

        // Render the object with the texture generated above

        Pass {

			CGPROGRAM

			#pragma vertex vert1

			#pragma fragment frag1

			#pragma target 3.0

            sampler2D _MainTex;

            float _BlurSizeXY;

			struct data {

			    float4 vertex : POSITION;

			    float3 normal : NORMAL;

			};

			struct v2f {

			    float4 position : POSITION;

			    float4 screenPos : TEXCOORD0;

			};

			v2f vert1(data i)

			{

			    v2f o;

			    o.position = UnityObjectToClipPos(i.vertex);

			    o.screenPos = o.position;

			    return o;

			}

			half4 frag1( 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;

				//horizontal 

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

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

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

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

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

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

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

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

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

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

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

			    sum += tex2D( _MainTex, float2(screenPos.x, screenPos.y)) *  0.16;

				return sum / 2;

			}

			ENDCG

        }

        Pass {

        Blend One One

			CGPROGRAM

			#pragma vertex vert2

			#pragma fragment frag2 

			#pragma target 3.0

            sampler2D _MainTex;

            float _BlurSizeXY;

			struct data {

			    float4 vertex : POSITION;

			    float3 normal : NORMAL;

			};

			struct v2f {

			    float4 position : POSITION;

			    float4 screenPos : TEXCOORD0;

			};

			v2f vert2(data i)

			{

			    v2f o;

			    o.position = UnityObjectToClipPos(i.vertex);

			    o.screenPos = o.position;

			    return o;

			}

			half4 frag2( 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;

			    //vertical

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

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

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

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

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

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

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

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

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

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

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

			    sum += tex2D( _MainTex, float2(screenPos.x, screenPos.y)) *  0.16;

				return sum / 2;

			}

			ENDCG

        }

    }

	Fallback Off

}