67 lines
1.4 KiB
Plaintext
67 lines
1.4 KiB
Plaintext
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Shader "Hidden/Ares/PostEffect/DistortVfx"
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{
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Properties
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{
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}
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CGINCLUDE
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#include "UnityCG.cginc"
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#include "../Gonbest/Include/Base/CommonCG.cginc"
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struct appdata
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{
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float4 vertex : POSITION;
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float2 uv : TEXCOORD0;
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};
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struct v2f
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{
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float2 uv0 : TEXCOORD0;
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float4 vertex : SV_POSITION;
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};
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uniform sampler2D _MainTex;
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uniform sampler2D _DistortTex;
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uniform float _Strength;
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//基本
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v2f vert(appdata v)
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{
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v2f o = (v2f)0;
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o.vertex = v.vertex;
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o.uv0 = v.uv;
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#if defined(UNITY_UV_STARTS_AT_TOP)
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o.uv0 = o.uv0 * float2(1, -1) + float2(0, 1);
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#endif
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return o;
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}
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//处理片元
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fixed4 frag(v2f i) : SV_Target
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{
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//根据时间改变采样噪声图获得随机的输出
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float4 noise = tex2D(_DistortTex, i.uv0);
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//以随机的输出*控制系数得到偏移值
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float2 offset = noise.xy * _Strength;
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//像素采样时偏移offset，用Mask权重进行修改
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float2 uv = offset + i.uv0;
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float4 col = tex2D(_MainTex, uv);
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return col;
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}
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ENDCG
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SubShader
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{
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Pass
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{
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ZTest Always
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Cull Off
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ZWrite Off
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Fog { Mode off }
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma fragmentoption ARB_precision_hint_fastest
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ENDCG
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}
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}
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Fallback off
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}
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