Initial files

Assets/Scripts/RuntimeGizmo/Shader/Resources/Lines.shader

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+Shader "Custom/Lines"
+{
+	SubShader
+	{
+		Pass
+		{
+			Blend SrcAlpha OneMinusSrcAlpha
+			ZWrite Off
+			ZTest Always
+			Cull Off
+			Fog { Mode Off }
+
+			BindChannels
+			{
+			  Bind "vertex", vertex
+			  Bind "color", color
+			}
+		}
+	}
+}

Assets/Scripts/RuntimeGizmo/Shader/Resources/Lines.shader.meta

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+fileFormatVersion: 2
+guid: 6a31e6e67bc4dc748a0e31657ba5c58e
+ShaderImporter:
+  externalObjects: {}
+  defaultTextures: []
+  nonModifiableTextures: []
+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/RuntimeGizmo/Shader/Resources/Outline.shader

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+//Taken and modified from github.com/Shrimpey/Outlined-Diffuse-Shader-Fixed/blob/master/CustomOutline.shader
+
+Shader "Custom/Outline" {
+	Properties {
+		_OutlineColor ("Outline Color", Color) = (1,.5,0,1)
+		_Outline ("Outline width", Range (0, 1)) = .1
+	}
+ 
+CGINCLUDE
+#include "UnityCG.cginc"
+ 
+struct appdata {
+	float4 vertex : POSITION;
+	float3 normal : NORMAL;
+};
+ 
+struct v2f {
+	float4 pos : POSITION;
+	float4 color : COLOR;
+};
+ 
+uniform float _Outline;
+uniform float4 _OutlineColor;
+ 
+v2f vert(appdata v) {
+	// just make a copy of incoming vertex data but scaled according to normal direction
+	v2f o;
+
+	v.vertex *= ( 1 + _Outline);
+
+	o.pos = UnityObjectToClipPos(v.vertex);
+ 
+	o.color = _OutlineColor;
+	return o;
+}
+ENDCG
+ 
+	SubShader {
+		Tags { "DisableBatching" = "True" }
+		Pass {
+			Name "OUTLINE"
+			Tags {"LightMode" = "UniversalForward" }
+			Cull Front
+			ZWrite On
+			ColorMask RGB
+			Blend SrcAlpha OneMinusSrcAlpha
+ 
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			half4 frag(v2f i) :COLOR { return i.color; }
+			ENDCG
+		}
+	}
+ 
+	Fallback "Diffuse"
+}

Assets/Scripts/RuntimeGizmo/Shader/Resources/Outline.shader.meta

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