unity 支持圆形、切倒角和虚化UGUI Shader
// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt) Shader "UI/UICircular" { Properties { _R("圆的半径R", Range(0,1)) = 0.5 _Blur("边缘虚化的范围", Range(0,100)) = 100 [PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {} _Color("Tint", 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 _ColorMask("Color Mask", Float) = 15 [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip("Use Alpha Clip", Float) = 0 } SubShader { Tags { "Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent" "PreviewType" = "Plane" "CanUseSpriteAtlas" = "True" } Stencil { Ref[_Stencil] Comp[_StencilComp] Pass[_StencilOp] ReadMask[_StencilReadMask] WriteMask[_StencilWriteMask] } Cull Off Lighting Off ZWrite Off ZTest[unity_GUIZTestMode] Blend SrcAlpha OneMinusSrcAlpha ColorMask[_ColorMask] Pass { Name "Default" CGPROGRAM #pragma vertex vert #pragma fragment frag #pragma target 2.0 #include "UnityCG.cginc" #include "UnityUI.cginc" #pragma multi_compile __ UNITY_UI_CLIP_RECT #pragma multi_compile __ UNITY_UI_ALPHACLIP struct appdata_t { float4 vertex : POSITION; float4 color : COLOR; float2 texcoord : TEXCOORD0; UNITY_VERTEX_INPUT_INSTANCE_ID }; struct v2f { float4 vertex : SV_POSITION; fixed4 color : COLOR; float2 texcoord : TEXCOORD0; float4 worldPosition : TEXCOORD1; UNITY_VERTEX_OUTPUT_STEREO }; fixed4 _Color; fixed4 _TextureSampleAdd; float4 _ClipRect; float _R; float _X; float _Y; float _Blur; v2f vert(appdata_t v) { v2f OUT; UNITY_SETUP_INSTANCE_ID(v); UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT); OUT.worldPosition = v.vertex; OUT.vertex = UnityObjectToClipPos(OUT.worldPosition); OUT.texcoord = v.texcoord; OUT.color = v.color * _Color; return OUT; } sampler2D _MainTex; fixed4 frag(v2f IN) : SV_Target { half4 color = (tex2D(_MainTex, IN.texcoord) + _TextureSampleAdd) * IN.color; #ifdef UNITY_UI_CLIP_RECT color.a *= UnityGet2DClipping(IN.worldPosition.xy, _ClipRect); #endif #ifdef UNITY_UI_ALPHACLIP clip(color.a - 0.001); #endif //圆形 float x = IN.texcoord.x-0.5f; float y = IN.texcoord.y-0.5f; float lerp = (1 - _Blur * (_R*_R - (x * x + y * y)))*color.a;//如果不加这句代码,图片边缘会有明显的锯齿 color.a = (color.a - lerp)*step(x*x + y * y, _R*_R);//如果 _R*_R<(x*x + y * y),返回 0;否则,返回 1。 return color; } ENDCG } } }
博客园Jason_c微信打赏码
如果本篇文档对你有帮助,打赏Jason_c根华子吧,他的私房钱被老婆没收了,呜呜!
![](https://files-cdn.cnblogs.com/files/Jason-c/%E5%BE%AE%E4%BF%A1%E6%89%93%E8%B5%8F%E7%A0%81.bmp)