Created
April 2, 2022 10:21
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UIで円形に切り抜くシェーダ
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Shader "UI/CircleSoft" | |
{ | |
Properties | |
{ | |
[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 | |
_CircleOffset("CircleOffset", Range(-0.25, 0.25)) = 0 | |
_SoftLength("Soft Length", Range(0, 0.1)) = 0.02 | |
[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 One 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_local _ UNITY_UI_CLIP_RECT | |
#pragma multi_compile_local _ 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; | |
half4 color : COLOR; | |
float2 texcoord : TEXCOORD0; | |
float4 worldPosition : TEXCOORD1; | |
half4 mask : TEXCOORD2; | |
UNITY_VERTEX_OUTPUT_STEREO | |
}; | |
sampler2D _MainTex; | |
half4 _Color; | |
half4 _TextureSampleAdd; | |
float4 _ClipRect; | |
float4 _MainTex_ST; | |
float _UIMaskSoftnessX; | |
float _UIMaskSoftnessY; | |
float _CircleOffset; | |
float _SoftLength; | |
v2f vert(appdata_t v) | |
{ | |
v2f OUT; | |
UNITY_SETUP_INSTANCE_ID(v); | |
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT); | |
float4 vPosition = UnityObjectToClipPos(v.vertex); | |
OUT.worldPosition = v.vertex; | |
OUT.vertex = UnityObjectToClipPos(OUT.worldPosition); | |
float2 pixelSize = vPosition.w; | |
pixelSize /= float2(1, 1) * abs(mul((float2x2)UNITY_MATRIX_P, _ScreenParams.xy)); | |
float4 clampedRect = clamp(_ClipRect, -2e10, 2e10); | |
OUT.texcoord = TRANSFORM_TEX(v.texcoord.xy, _MainTex); | |
OUT.mask = half4(v.vertex.xy * 2 - clampedRect.xy - clampedRect.zw, 0.25 / (0.25 * half2(_UIMaskSoftnessX, _UIMaskSoftnessY) + abs(pixelSize.xy))); | |
OUT.color = v.color * _Color; | |
return OUT; | |
} | |
half4 frag(v2f IN) : SV_Target | |
{ | |
half4 color = IN.color * (tex2D(_MainTex, IN.texcoord) + _TextureSampleAdd); | |
#ifdef UNITY_UI_CLIP_RECT | |
half2 m = saturate((_ClipRect.zw - _ClipRect.xy - abs(IN.mask.xy)) * IN.mask.zw); | |
color.a *= m.x * m.y; | |
#endif | |
float2 d = 0.5 - IN.texcoord; | |
d *= d; | |
half threshold = 0.25 + _CircleOffset; | |
half hSoftLength = _SoftLength * 0.5; | |
color.a *= 1 - smoothstep(threshold - hSoftLength, threshold + hSoftLength, d.x + d.y); | |
#ifdef UNITY_UI_ALPHACLIP | |
clip(color.a - 0.001); | |
#endif | |
color.rgb *= color.a; | |
return color; | |
} | |
ENDCG | |
} | |
} | |
} |
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