Unity 基于图像处理的图像显示特效制作过场特效

逐行/列扫描

Shader "LSQ/ImageProcessing/PerLineScan"
{Properties{_MainTex ("Texture", 2D) = "white" {}[Enum(Up,1,Down,2,Left,3,Right,4)] _ScanDirection ("Scan Direction", Int) = 1 _Value ("Value", Range(0, 1)) = 0}SubShader{// No culling or depthCull Off ZWrite Off ZTest AlwaysPass{CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"struct appdata{float4 vertex : POSITION;float2 uv : TEXCOORD0;};struct v2f{float2 uv : TEXCOORD0;float4 vertex : SV_POSITION;};v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = v.uv;return o;}sampler2D _MainTex;float4 _MainTex_TexelSize;int _ScanDirection;float _Value;fixed4 frag (v2f i) : SV_Target{fixed4 col = tex2D(_MainTex, i.uv);int lineIndex = 1;int valueIndex = 0;if(_ScanDirection == 1) //向上{lineIndex = i.uv.y * _MainTex_TexelSize.w;valueIndex = _Value * _MainTex_TexelSize.w;}else if(_ScanDirection == 2) //向下{lineIndex = (1 - i.uv.y) * _MainTex_TexelSize.w;valueIndex = _Value * _MainTex_TexelSize.w;}else if(_ScanDirection == 3) //向左{lineIndex = i.uv.x * _MainTex_TexelSize.z;valueIndex = _Value * _MainTex_TexelSize.z;}else //向右{lineIndex = (1 - i.uv.x) * _MainTex_TexelSize.z;valueIndex = _Value * _MainTex_TexelSize.z;}clip(lineIndex - valueIndex);return col;}ENDCG}}
}

移动

Shader "LSQ/ImageProcessing/MoveIn"
{Properties{_MainTex ("Texture", 2D) = "white" {}[Enum(Up,1,Down,2,Left,3,Right,4)] _ScanDirection ("Scan Direction", Int) = 1 _Value ("Value", Range(0, 1)) = 0}SubShader{// No culling or depthCull Off ZWrite Off ZTest AlwaysPass{CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"struct appdata{float4 vertex : POSITION;float2 uv : TEXCOORD0;};struct v2f{float2 uv : TEXCOORD0;float4 vertex : SV_POSITION;};v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = v.uv;return o;}sampler2D _MainTex;float4 _MainTex_TexelSize;int _ScanDirection;float _Value;fixed4 frag (v2f i) : SV_Target{if(_ScanDirection == 1) //向上{i.uv.y = i.uv.y + 1 - _Value;}else if(_ScanDirection == 2) //向下{i.uv.y = i.uv.y - 1 + _Value;}else if(_ScanDirection == 3) //向左{i.uv.x =  i.uv.x - 1 + _Value;}else //向右{i.uv.x = i.uv.x + 1 - _Value;}fixed4 col = tex2D(_MainTex, i.uv);if(i.uv.x > 1 || i.uv.y > 1 || i.uv.x < 0 || i.uv.y < 0)return 1;return col;}ENDCG}}
}

交叉飞入

Shader "LSQ/ImageProcessing/CrossFlight"
{Properties{_MainTex ("Texture", 2D) = "white" {}[Enum(Horizontal,1,Vertical,2)] _Direction ("Direction", Int) = 1_Value ("Value", Range(0, 1)) = 0}SubShader{// No culling or depthCull Off ZWrite Off ZTest AlwaysPass{CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"struct appdata{float4 vertex : POSITION;float2 uv : TEXCOORD0;};struct v2f{float2 uv : TEXCOORD0;float4 vertex : SV_POSITION;};v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = v.uv;return o;}sampler2D _MainTex;float4 _MainTex_TexelSize;int _Direction;float _Value;fixed4 frag (v2f i) : SV_Target{if(_Direction == 1) //水平{if(i.uv.y > 0.5) //上行{i.uv.x = i.uv.x + 1 - _Value;}else //下行{i.uv.x = i.uv.x - 1 + _Value;}}else if(_Direction == 2) //竖直{if(i.uv.x > 0.5) //右列{i.uv.y = i.uv.y + 1 - _Value;}else //左列{i.uv.y = i.uv.y - 1 + _Value;}}fixed4 col = tex2D(_MainTex, i.uv);if(i.uv.x > 1 || i.uv.y > 1 || i.uv.x < 0 || i.uv.y < 0)return 1;return col;}ENDCG}}
}

中间扩张/收缩

Shader "LSQ/ImageProcessing/CenterExtend"
{Properties{_MainTex ("Texture", 2D) = "white" {}[Enum(Horizontal,1,Vertical,2)] _Direction ("Direction", Int) = 1[Enum(Extend,1,Shrink,2)] _Type ("Direction", Int) = 1_Value ("Value", Range(0, 1)) = 0}SubShader{// No culling or depthCull Off ZWrite Off ZTest AlwaysPass{CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"struct appdata{float4 vertex : POSITION;float2 uv : TEXCOORD0;};struct v2f{float2 uv : TEXCOORD0;float4 vertex : SV_POSITION;};v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = v.uv;return o;}sampler2D _MainTex;int _Direction;int _Type;float _Value;fixed4 frag (v2f i) : SV_Target{fixed4 col = tex2D(_MainTex, i.uv);float value = 1;if(_Direction == 1) //水平{if(_Type == 1) //扩张{value = abs(i.uv.x - 0.5) * 2;}else //收缩{value = 1 - abs(i.uv.x - 0.5) * 2;}}else if(_Direction == 2) //竖直{if(_Type == 2) //扩张{value = 1 - abs(i.uv.y - 0.5) * 2; }else //收缩{value = abs(i.uv.y - 0.5) * 2;}}clip(_Value - value);return col;}ENDCG}}
}

栅条特效

Shader "LSQ/ImageProcessing/GridBar"
{Properties{_MainTex ("Texture", 2D) = "white" {}[Enum(Horizontal,1,Vertical,2)] _Direction ("Direction", Int) = 1_Count ("Count", int) = 10_Value ("Value", Range(0, 1)) = 0}SubShader{// No culling or depthCull Off ZWrite Off ZTest AlwaysPass{CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"struct appdata{float4 vertex : POSITION;float2 uv : TEXCOORD0;};struct v2f{float2 uv : TEXCOORD0;float4 vertex : SV_POSITION;};v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = v.uv;return o;}sampler2D _MainTex;int _Direction;int _Count;float _Value;fixed4 frag (v2f i) : SV_Target{if(_Direction == 1) //水平{float lineIndex = i.uv.y * _Count;lineIndex = floor(lineIndex);if(lineIndex % 2 == 0){i.uv.x =  i.uv.x - 1 + _Value;}else{i.uv.x = i.uv.x + 1 - _Value;}}else if(_Direction == 2) //竖直{float lineIndex = i.uv.x * _Count;lineIndex = floor(lineIndex);if(lineIndex % 2 == 0){i.uv.y = i.uv.y + 1 - _Value;}else{i.uv.y = i.uv.y - 1 + _Value;}}fixed4 col = tex2D(_MainTex, i.uv);if(i.uv.x > 1 || i.uv.y > 1 || i.uv.x < 0 || i.uv.y < 0)return 1;return col;}ENDCG}}
}

图像渐显

Shader "LSQ/ImageProcessing/FadeIn"
{Properties{_MainTex ("Texture", 2D) = "white" {}_Value ("Value", Range(0, 1)) = 0}SubShader{// No culling or depthCull Off ZWrite Off ZTest AlwaysPass{CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"struct appdata{float4 vertex : POSITION;float2 uv : TEXCOORD0;};struct v2f{float2 uv : TEXCOORD0;float4 vertex : SV_POSITION;};v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = v.uv;return o;}sampler2D _MainTex;float _Value;fixed4 frag (v2f i) : SV_Target{fixed4 col = tex2D(_MainTex, i.uv);//灰度值float value = (0.299 * col.r + 0.587 * col.g + 0.114 * col.b);clip(_Value - value);return col;}ENDCG}}
}

百叶窗

Shader "LSQ/ImageProcessing/Shutter"
{Properties{_MainTex ("Texture", 2D) = "white" {}[Enum(Horizontal,1,Vertical,2)] _Direction ("Direction", Int) = 1_Count ("Count", int) = 10_Value ("Value", Range(0, 1)) = 0}SubShader{// No culling or depthCull Off ZWrite Off ZTest AlwaysPass{CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"struct appdata{float4 vertex : POSITION;float2 uv : TEXCOORD0;};struct v2f{float2 uv : TEXCOORD0;float4 vertex : SV_POSITION;};v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = v.uv;return o;}sampler2D _MainTex;int _Direction;int _Count;float _Value;fixed4 frag (v2f i) : SV_Target{fixed4 col = tex2D(_MainTex, i.uv);float value = 1;if(_Direction == 1) //水平{value = i.uv.x * _Count;value = value - floor(value);}else if(_Direction == 2) //竖直{value = i.uv.y * _Count;value = value - floor(value);}clip(_Value - value);return col;}ENDCG}}
}

马赛克

Shader "LSQ/ImageProcessing/Mosaic"
{Properties{_MainTex ("Texture", 2D) = "white" {}_Value ("Value", Range(0, 1)) = 0}SubShader{// No culling or depthCull Off ZWrite Off ZTest AlwaysPass{CGPROGRAM#pragma vertex vert#pragma fragment frag#include "UnityCG.cginc"struct appdata{float4 vertex : POSITION;float2 uv : TEXCOORD0;};struct v2f{float2 uv : TEXCOORD0;float4 vertex : SV_POSITION;};v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = v.uv;return o;}sampler2D _MainTex;float4 _MainTex_TexelSize;float _Value;fixed4 frag (v2f i) : SV_Target{fixed2 uv = round(i.uv * _MainTex_TexelSize.zw * _Value) / (_MainTex_TexelSize.zw * _Value);fixed4 col = tex2D(_MainTex, uv);return col;}ENDCG}}
}

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Unity 基于图像处理的图像显示特效制作过场特效

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