// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)' Shader "Custom/Blur" { // 属性 Properties { // 定义 1-255 范围的半径 默认 1 _Radius("Radius", Range(1, 255)) = 1 } Category { Tags{ "Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Opaque" } SubShader { GrabPass { Tags{ "LightMode" = "Always" } } Pass { Tags{ "LightMode" = "Always" } CGPROGRAM #pragma vertex vert #pragma fragment frag #pragma fragmentoption ARB_precision_hint_fastest #include "UnityCG.cginc" struct appdata_t { float4 vertex : POSITION; float2 texcoord: TEXCOORD0; }; struct v2f { float4 vertex : POSITION; float4 uvgrab : TEXCOORD0; }; v2f vert(appdata_t v) { v2f o; o.vertex = UnityObjectToClipPos(v.vertex); #if UNITY_UV_STARTS_AT_TOP float scale = -1.0; #else float scale = 1.0; #endif o.uvgrab.xy = (float2(o.vertex.x, o.vertex.y*scale) + o.vertex.w) * 0.5; o.uvgrab.zw = o.vertex.zw; return o; } sampler2D _GrabTexture; float4 _GrabTexture_TexelSize; float _Radius; half4 frag(v2f i) : COLOR { half4 sum = half4(0,0,0,0); #define GRABXYPIXEL(kernelx, kernely) tex2Dproj( _GrabTexture, UNITY_PROJ_COORD(float4(i.uvgrab.x + _GrabTexture_TexelSize.x * kernelx, i.uvgrab.y + _GrabTexture_TexelSize.y * kernely, i.uvgrab.z, i.uvgrab.w))) sum += GRABXYPIXEL(0.0, 0.0); int measurments = 1; for (float range = 0.1f; range <= _Radius; range += 0.1f) { sum += GRABXYPIXEL(range, range); sum += GRABXYPIXEL(range, -range); sum += GRABXYPIXEL(-range, range); sum += GRABXYPIXEL(-range, -range); measurments += 4; } return sum / measurments; } ENDCG } GrabPass { Tags{ "LightMode" = "Always" } } Pass { Tags{ "LightMode" = "Always" } CGPROGRAM #pragma vertex vert #pragma fragment frag #pragma fragmentoption ARB_precision_hint_fastest #include "UnityCG.cginc" struct appdata_t { float4 vertex : POSITION; float2 texcoord: TEXCOORD0; }; struct v2f { float4 vertex : POSITION; float4 uvgrab : TEXCOORD0; }; v2f vert(appdata_t v) { v2f o; o.vertex = UnityObjectToClipPos(v.vertex); #if UNITY_UV_STARTS_AT_TOP float scale = -1.0; #else float scale = 1.0; #endif o.uvgrab.xy = (float2(o.vertex.x, o.vertex.y*scale) + o.vertex.w) * 0.5; o.uvgrab.zw = o.vertex.zw; return o; } sampler2D _GrabTexture; float4 _GrabTexture_TexelSize; float _Radius; half4 frag(v2f i) : COLOR { half4 sum = half4(0,0,0,0); float radius = 1.41421356237 * _Radius; #define GRABXYPIXEL(kernelx, kernely) tex2Dproj( _GrabTexture, UNITY_PROJ_COORD(float4(i.uvgrab.x + _GrabTexture_TexelSize.x * kernelx, i.uvgrab.y + _GrabTexture_TexelSize.y * kernely, i.uvgrab.z, i.uvgrab.w))) sum += GRABXYPIXEL(0.0, 0.0); int measurments = 1; for (float range = 1.41421356237f; range <= radius * 1.41; range += 1.41421356237f) { sum += GRABXYPIXEL(range, 0); sum += GRABXYPIXEL(-range, 0); sum += GRABXYPIXEL(0, range); sum += GRABXYPIXEL(0, -range); measurments += 4; } return sum / measurments; } ENDCG } } } }
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