143 lines
4.4 KiB
Plaintext
143 lines
4.4 KiB
Plaintext
Shader "BriarQueen/UI/Edge Darken"
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{
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Properties
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{
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[PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {}
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_Color ("Tint", Color) = (0, 0, 0, 0.65)
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_Amount ("Amount", Range(0, 1)) = 1
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_EdgeDarkness ("Edge Darkness", Range(0, 1)) = 1
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_CenterDarkness ("Center Darkness", Range(0, 1)) = 0
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_EdgeWidth ("Edge Width", Range(0.001, 0.5)) = 0.22
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_Softness ("Softness", Range(0.001, 0.5)) = 0.18
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[HideInInspector] _RectSize ("Rect Size", Vector) = (1, 1, 0, 0)
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[HideInInspector] _RectPivot ("Rect Pivot", Vector) = (0.5, 0.5, 0, 0)
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_StencilComp ("Stencil Comparison", Float) = 8
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_Stencil ("Stencil ID", Float) = 0
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_StencilOp ("Stencil Operation", Float) = 0
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_StencilWriteMask ("Stencil Write Mask", Float) = 255
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_StencilReadMask ("Stencil Read Mask", Float) = 255
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_ColorMask ("Color Mask", Float) = 15
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[Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
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}
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SubShader
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{
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Tags
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{
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"Queue" = "Transparent"
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"IgnoreProjector" = "True"
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"RenderType" = "Transparent"
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"PreviewType" = "Plane"
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"CanUseSpriteAtlas" = "True"
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}
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Stencil
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{
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Ref [_Stencil]
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Comp [_StencilComp]
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Pass [_StencilOp]
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ReadMask [_StencilReadMask]
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WriteMask [_StencilWriteMask]
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}
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Cull Off
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Lighting Off
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ZWrite Off
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ZTest [unity_GUIZTestMode]
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Blend SrcAlpha OneMinusSrcAlpha
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ColorMask [_ColorMask]
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Pass
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{
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Name "Default"
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CGPROGRAM
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#pragma vertex Vert
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#pragma fragment Frag
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#pragma target 2.0
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#include "UnityCG.cginc"
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#include "UnityUI.cginc"
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#pragma multi_compile_local _ UNITY_UI_CLIP_RECT
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#pragma multi_compile_local _ UNITY_UI_ALPHACLIP
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struct AppData
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{
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float4 vertex : POSITION;
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float4 color : COLOR;
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float2 texcoord : TEXCOORD0;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct Varyings
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{
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float4 vertex : SV_POSITION;
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fixed4 color : COLOR;
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float2 uv : TEXCOORD0;
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float2 localPosition : TEXCOORD1;
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float4 worldPosition : TEXCOORD2;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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sampler2D _MainTex;
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fixed4 _Color;
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fixed4 _TextureSampleAdd;
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float4 _ClipRect;
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float _Amount;
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float _EdgeDarkness;
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float _CenterDarkness;
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float _EdgeWidth;
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float _Softness;
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float4 _RectSize;
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float4 _RectPivot;
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Varyings Vert(AppData input)
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{
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Varyings output;
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UNITY_SETUP_INSTANCE_ID(input);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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output.worldPosition = input.vertex;
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output.vertex = UnityObjectToClipPos(input.vertex);
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output.uv = input.texcoord;
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output.localPosition = input.vertex.xy;
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output.color = input.color * _Color;
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return output;
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}
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fixed4 Frag(Varyings input) : SV_Target
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{
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fixed4 color = (tex2D(_MainTex, input.uv) + _TextureSampleAdd) * input.color;
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float2 safeRectSize = max(_RectSize.xy, float2(0.0001, 0.0001));
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float2 rectUv = saturate((input.localPosition / safeRectSize) + _RectPivot.xy);
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float edgeDistance = min(
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min(rectUv.x, 1.0 - rectUv.x),
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min(rectUv.y, 1.0 - rectUv.y));
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float outerEdge = 1.0 - smoothstep(_EdgeWidth, _EdgeWidth + _Softness, edgeDistance);
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float darkness = lerp(_CenterDarkness, _EdgeDarkness, outerEdge);
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color.a *= saturate(_Amount) * darkness;
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#ifdef UNITY_UI_CLIP_RECT
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color.a *= UnityGet2DClipping(input.worldPosition.xy, _ClipRect);
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#endif
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#ifdef UNITY_UI_ALPHACLIP
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clip(color.a - 0.001);
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#endif
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return color;
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}
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ENDCG
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}
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}
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}
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