Created
December 19, 2018 18:55
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Unity Marching Ants Sprite Outline Shader
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| // original source: https://github.com/wlgys8/Sprites-Outline | |
| Shader "Sprites/Outline (Marching Ants)" | |
| { | |
| Properties | |
| { | |
| [PerRendererData] _MainTex ("Sprite Texture", 2D) = "white" {} | |
| _Color ("Tint", Color) = (1,1,1,1) | |
| [MaterialToggle] PixelSnap ("Pixel snap", Float) = 0 | |
| // Add values to determine if outlining is enabled and outline color. | |
| [PerRendererData] _OutlineSize ("Outline", Float) = 0 | |
| [PerRendererData] _OutlineColor("Outline Color", Color) = (1,1,1,1) | |
| } | |
| CGINCLUDE | |
| #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; | |
| v2f vert_outline(appdata_t IN) | |
| { | |
| v2f OUT; | |
| OUT.vertex = UnityObjectToClipPos(IN.vertex); | |
| OUT.texcoord = IN.texcoord; | |
| OUT.color = IN.color * _Color; | |
| #ifdef PIXELSNAP_ON | |
| OUT.vertex = UnityPixelSnap (OUT.vertex); | |
| #endif | |
| return OUT; | |
| } | |
| sampler2D _MainTex; | |
| sampler2D _AlphaTex; | |
| float4 _MainTex_TexelSize; //magic var | |
| float _OutlineSize; //outline size | |
| fixed4 _OutlineColor; // outlie color | |
| fixed4 SampleSpriteTexture (float2 uv) | |
| { | |
| fixed4 color = tex2D (_MainTex, uv); | |
| return color; | |
| } | |
| ENDCG | |
| SubShader | |
| { | |
| Tags | |
| { | |
| "Queue"="Transparent" | |
| "IgnoreProjector"="True" | |
| "RenderType"="Transparent" | |
| "PreviewType"="Plane" | |
| "CanUseSpriteAtlas"="True" | |
| } | |
| Cull Off | |
| Lighting Off | |
| ZWrite Off | |
| Blend One OneMinusSrcAlpha | |
| //outline down | |
| Pass | |
| { | |
| Offset 1, 1 | |
| CGPROGRAM | |
| #pragma vertex vert | |
| #pragma fragment frag | |
| #pragma multi_compile _ PIXELSNAP_ON | |
| #pragma shader_feature ETC1_EXTERNAL_ALPHA | |
| v2f vert(appdata_t IN) | |
| { | |
| return vert_outline(IN); | |
| } | |
| fixed4 frag(v2f IN) : SV_Target | |
| { | |
| fixed4 texColor = SampleSpriteTexture (IN.texcoord + fixed2(0,_MainTex_TexelSize.y*_OutlineSize)) * IN.color; | |
| fixed4 c = _OutlineColor * texColor.a; | |
| int w = ((int)(IN.texcoord.x * 100 + IN.texcoord.y * 100 + _Time.y * 5) & 1); | |
| return c*w; | |
| } | |
| ENDCG | |
| } | |
| //outline up | |
| Pass | |
| { | |
| Offset 1, 1 | |
| CGPROGRAM | |
| #pragma vertex vert | |
| #pragma fragment frag | |
| #pragma multi_compile _ PIXELSNAP_ON | |
| #pragma shader_feature ETC1_EXTERNAL_ALPHA | |
| v2f vert(appdata_t IN) | |
| { | |
| return vert_outline(IN); | |
| } | |
| fixed4 frag(v2f IN) : SV_Target | |
| { | |
| fixed4 texColor = SampleSpriteTexture (IN.texcoord + fixed2(0,- _MainTex_TexelSize.y* _OutlineSize)) * IN.color; | |
| fixed4 c = _OutlineColor * texColor.a; | |
| int w = ((int)(IN.texcoord.x * 100 + IN.texcoord.y * 100 + _Time.y * 5) & 1); | |
| return c*w; | |
| } | |
| ENDCG | |
| } | |
| //outline left | |
| Pass | |
| { | |
| Offset 1, 1 | |
| CGPROGRAM | |
| #pragma vertex vert | |
| #pragma fragment frag | |
| #pragma multi_compile _ PIXELSNAP_ON | |
| #pragma shader_feature ETC1_EXTERNAL_ALPHA | |
| v2f vert(appdata_t IN) | |
| { | |
| return vert_outline(IN); | |
| } | |
| fixed4 frag(v2f IN) : SV_Target | |
| { | |
| fixed4 texColor = SampleSpriteTexture (IN.texcoord + fixed2(_MainTex_TexelSize.x* _OutlineSize,0)) * IN.color; | |
| fixed4 c = _OutlineColor * texColor.a; | |
| int w = ((int)(IN.texcoord.x * 100 + IN.texcoord.y * 100 + _Time.y * 5) & 1); | |
| return c * w; | |
| } | |
| ENDCG | |
| } | |
| //outline right | |
| Pass | |
| { | |
| Offset 1, 1 | |
| CGPROGRAM | |
| #pragma vertex vert | |
| #pragma fragment frag | |
| #pragma multi_compile _ PIXELSNAP_ON | |
| #pragma shader_feature ETC1_EXTERNAL_ALPHA | |
| v2f vert(appdata_t IN) | |
| { | |
| return vert_outline(IN); | |
| } | |
| fixed4 frag(v2f IN) : SV_Target | |
| { | |
| fixed4 texColor = SampleSpriteTexture (IN.texcoord + fixed2(-_MainTex_TexelSize.x* _OutlineSize,0)) * IN.color; | |
| fixed4 c = _OutlineColor * texColor.a; | |
| int w = ((int)(IN.texcoord.x * 100 + IN.texcoord.y * 100 + _Time.y * 5) & 1); | |
| return c * w; | |
| } | |
| ENDCG | |
| } | |
| // | |
| Pass | |
| { | |
| Offset 0, 0 | |
| CGPROGRAM | |
| #pragma vertex vert | |
| #pragma fragment frag | |
| #pragma multi_compile _ PIXELSNAP_ON | |
| #pragma shader_feature ETC1_EXTERNAL_ALPHA | |
| v2f vert(appdata_t IN) | |
| { | |
| v2f OUT; | |
| OUT.vertex = UnityObjectToClipPos(IN.vertex); | |
| OUT.texcoord = IN.texcoord; | |
| OUT.color = IN.color * _Color; | |
| #ifdef PIXELSNAP_ON | |
| OUT.vertex = UnityPixelSnap (OUT.vertex); | |
| #endif | |
| return OUT; | |
| } | |
| fixed4 frag(v2f IN) : SV_Target | |
| { | |
| fixed4 c = SampleSpriteTexture (IN.texcoord) * IN.color; | |
| c.rgb *= c.a; | |
| return c; | |
| } | |
| ENDCG | |
| } | |
| } | |
| } |
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