-
Notifications
You must be signed in to change notification settings - Fork 9
/
SpriteOutline.shader
102 lines (85 loc) · 2.75 KB
/
SpriteOutline.shader
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
Shader "Custom/Sprite Outline"
{
Properties
{
_MainTex ("Sprite Texture", 2D) = "white" {}
_Color ("Tint", Color) = (1,1,1,1)
_OutlineThickness("Outline Thickness", Range (0.0, 0.1)) = 0.0
_OutlineColor ("Outline Color", Color) = (1,1,1,1)
}
SubShader
{
Tags
{
"Queue"="Transparent"
"IgnoreProjector"="True"
"RenderType"="Transparent"
"PreviewType"="Plane"
"CanUseSpriteAtlas"="True"
}
Cull Off
Lighting Off
ZWrite Off
Blend One OneMinusSrcAlpha
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma multi_compile _ PIXELSNAP_ON
#include "UnityCG.cginc"
struct appdata_t
{
float4 vertex : POSITION;
float4 color : COLOR;
float2 texcoord : TEXCOORD0;
};
struct v2f
{
float4 vertex : SV_POSITION;
fixed4 color : COLOR;
float2 texcoord : TEXCOORD0;
};
fixed4 _Color;
sampler2D _MainTex;
fixed4 _OutlineColor;
fixed _OutlineThickness;
v2f vert(appdata_t IN)
{
v2f OUT;
OUT.vertex = UnityObjectToClipPos(IN.vertex);
OUT.texcoord = IN.texcoord;
OUT.color = IN.color * _Color;
return OUT;
}
fixed4 SampleSpriteTexture (float2 uv)
{
fixed4 color = tex2D (_MainTex, uv);
return color;
}
fixed4 frag(v2f IN) : COLOR
{
fixed4 c = SampleSpriteTexture (IN.texcoord) * IN.color;
c.rgb *= c.a;
fixed4 outlineC = _OutlineColor;
outlineC.rgb *= outlineC.a;
//outlineC.a *= ceil(c.a);
if (c.a == 0.0)
{
fixed upAlpha = SampleSpriteTexture ( IN.texcoord + fixed2(0, _OutlineThickness)).a;
fixed downAlpha = SampleSpriteTexture ( IN.texcoord - fixed2(0, _OutlineThickness)).a;
fixed rightAlpha = SampleSpriteTexture ( IN.texcoord + fixed2(_OutlineThickness, 0)).a;
fixed leftAlpha = SampleSpriteTexture ( IN.texcoord - fixed2(_OutlineThickness, 0)).a;
fixed upRightAlpha = SampleSpriteTexture ( IN.texcoord - fixed2(_OutlineThickness, _OutlineThickness)).a;
fixed upLeftAlpha = SampleSpriteTexture ( IN.texcoord - fixed2(_OutlineThickness, -_OutlineThickness)).a;
fixed downRightAlpha = SampleSpriteTexture ( IN.texcoord - fixed2(-_OutlineThickness, _OutlineThickness)).a;
fixed downLeftAlpha = SampleSpriteTexture ( IN.texcoord - fixed2(-_OutlineThickness, -_OutlineThickness)).a;
if (upAlpha != 0.0|| downAlpha != 0.0 || rightAlpha != 0.0 || leftAlpha != 0.0 || upRightAlpha != 0.0 || upLeftAlpha != 0.0 || downLeftAlpha != 0.0 || downRightAlpha != 0.0)
return outlineC;
}
return c;
}
ENDCG
}
}
}