Unity 水面扰动

在unity中实现一个水面扰动的效果，这里用到了UV移动，和uv扰动这里我组合了这两个shader实现了一个水面扰动的效果，使用了一个波纹纹理，然后用一张2维噪声扰动uv。产生的效果还是比较乐观的

关键代码

v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = TRANSFORM_TEX(v.uv, _MainTex);o.uv += float2(_XSpeed, _YSpeed)*_Time.y;//uv移动return o;}fixed4 frag (v2f i) : SV_Target{// sample the texturefixed4 bias = tex2D(_Noise, i.uv+_Time.xy*_distortFactorTime);half4 color = tex2D(_MainTex, i.uv+bias.xy*_distortFactor);//uv扰动return color*_Color;}

素材

效果图

完整代码

Shader "Custom/DistortSelf"
{Properties{_MainTex("Texture", 2D) = "white" {}_Noise ("Noise", 2D) = "white" {}_distortFactorTime("FactorTime",Range(0,5)) = 0.5_distortFactor("factor",Range(0.04,1)) = 0_Color("Color",Color) = (1,1,1,1)_XSpeed("XSpeed",Range(-1,1)) = 0_YSpeed("YSpeed",Range(-1,1)) = 0}SubShader{Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" "PreviewType"="Plane" }LOD 100Blend SrcAlpha OneMinusSrcAlphaCull Off Lighting Off ZWrite OffPass{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;};sampler2D _MainTex;float4 _MainTex_ST;sampler2D _Noise;fixed _distortFactorTime;fixed _distortFactor;fixed4 _Color;float _XSpeed;float _YSpeed;v2f vert (appdata v){v2f o;o.vertex = UnityObjectToClipPos(v.vertex);o.uv = TRANSFORM_TEX(v.uv, _MainTex);o.uv += float2(_XSpeed, _YSpeed)*_Time.y;return o;}fixed4 frag (v2f i) : SV_Target{// sample the texturefixed4 bias = tex2D(_Noise, i.uv+_Time.xy*_distortFactorTime);half4 color = tex2D(_MainTex, i.uv+bias.xy*_distortFactor);return color*_Color;}ENDCG}}
}

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