Loading... 流光效果，支持控制流光`宽度`，`颜色`，`角度`  - URP版本 ``` Shader "Unlit/LightFlow" { Properties { _MainTex ("Texture", 2D) = "white" {} _LightColor ("Light", Color) = (1,1,1,1) _LightWidth ("Light width", float) = 0.2 _LightAngle ("Light angle", float) = 45 _LightRange("Light range", float) = 0 _StencilComp ("Stencil Comparison", Float) = 8 _Stencil ("Stencil ID", Float) = 0 _StencilOp ("Stencil Operation", Float) = 0 _StencilWriteMask ("Stencil Write Mask", Float) = 255 _StencilReadMask ("Stencil Read Mask", Float) = 255 } SubShader { Tags { "RenderType"="Transparent" "Queue"="Transparent" } Stencil { Ref [_Stencil] Comp [_StencilComp] Pass [_StencilOp] ReadMask [_StencilReadMask] WriteMask [_StencilWriteMask] } Cull Off Lighting Off ZWrite Off ZTest [unity_GUIZTestMode] Blend SrcAlpha OneMinusSrcAlpha Pass { HLSLINCLUDE #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/core.hlsl" ENDHLSL HLSLPROGRAM #pragma vertex vert #pragma fragment frag struct appdata { float4 vertex : POSITION; float2 uv : TEXCOORD0; }; struct v2f { float2 uv : TEXCOORD0; float4 vertex : SV_POSITION; }; sampler2D _MainTex; float4 _MainTex_ST; uniform float4 _LightColor; float _LightWidth; float _LightAngle; float _LightRange; v2f vert (appdata v) { v2f o; o.vertex = TransformObjectToHClip(v.vertex); o.uv = TRANSFORM_TEX(v.uv, _MainTex); return o; } real4 frag (v2f i) : SV_Target { real4 col = tex2D(_MainTex, i.uv); float angle = radians(_LightAngle); float halfWidth = _LightWidth / 2 / cos(angle); float base = tan(angle) * i.uv.x + _LightRange; float up = base + halfWidth; float down = base - halfWidth ; float pwidth = length(float2(ddx(i.uv.x), ddy(i.uv.y))) * 30; float4 light = (smoothstep(up, up + pwidth, i.uv.y) - smoothstep(down - pwidth, down , i.uv.y)) * _LightColor; col.rgb = col.rgb + light.rgb * light.a; return col; } ENDHLSL } } } ``` - 内置管线版本 ``` Shader "Unlit/FlowLight" { Properties { _MainTex ("Texture", 2D) = "white" {} _LightColor ("Light", Color) = (1,1,1,1) _StencilComp ("Stencil Comparison", Float) = 8 _Stencil ("Stencil ID", Float) = 0 _StencilOp ("Stencil Operation", Float) = 0 _StencilWriteMask ("Stencil Write Mask", Float) = 255 _StencilReadMask ("Stencil Read Mask", Float) = 255 } SubShader { Tags { "RenderType"="Transparent" "Queue"="Transparent" } Stencil { Ref [_Stencil] Comp [_StencilComp] Pass [_StencilOp] ReadMask [_StencilReadMask] WriteMask [_StencilWriteMask] } Cull Off Lighting Off ZWrite Off ZTest [unity_GUIZTestMode] Blend SrcAlpha OneMinusSrcAlpha Pass { CGPROGRAM #pragma vertex vert #pragma fragment frag // make fog work #pragma multi_compile_fog #include "UnityCG.cginc" struct appdata { float4 vertex : POSITION; float2 uv : TEXCOORD0; }; struct v2f { float2 uv : TEXCOORD0; UNITY_FOG_COORDS(1) float4 vertex : SV_POSITION; }; sampler2D _MainTex; float4 _MainTex_ST; uniform float4 _LightColor; v2f vert (appdata v) { v2f o; o.vertex = UnityObjectToClipPos(v.vertex); o.uv = TRANSFORM_TEX(v.uv, _MainTex); return o; } fixed4 frag (v2f i) : SV_Target { fixed4 col = tex2D(_MainTex, i.uv); float base =((_Time.z)%4/4 - 0.1)*1.2; float up = base + sin(i.uv.x * 0.2) * 0.01; float down =base - 0.08+ sin(i.uv.x * 0.66)* 0.01; float pwidth = length(float2(ddx(i.uv.x), ddy(i.uv.y))) * 30; float4 wave = (smoothstep(up, up - pwidth, i.uv.y)-smoothstep(down, down - pwidth, i.uv.y))* _LightColor; col.rgb = col.rgb + wave/3 ; return col; } ENDCG } } } ``` 最后修改：2022 年 05 月 21 日 © 允许规范转载 赞 0