Oct
9
2021

Draw New Unity Logo using Surface Shader (+Default Cube)

An article by mgear

	// https://unitycoder.com/blog/2021/10/09/draw-new-unity-logo-using-surface-shader-default-cube/
	Shader "Custom/UnityLogoShader"
	{
	Properties
	{
	_Color ("Color", Color) = (1,1,1,1)
	_MainTex ("Albedo (RGB)", 2D) = "white" {}
	_Glossiness ("Smoothness", Range(0,1)) = 0.5
	_Metallic ("Metallic", Range(0,1)) = 0.0
	}
	SubShader
	{
	Tags { "RenderType"="Opaque" }
	LOD 200

	CGPROGRAM
	#pragma surface surf Standard fullforwardshadows vertex:vert
	#pragma target 3.0

	sampler2D _MainTex;

	struct Input
	{
	float2 uv_MainTex;
	float3 vertexNormal;
	};

	half _Glossiness;
	half _Metallic;
	fixed4 _Color;

	UNITY_INSTANCING_BUFFER_START(Props)
	UNITY_INSTANCING_BUFFER_END(Props)

	void vert (inout appdata_full v, out Input o)
	{
	UNITY_INITIALIZE_OUTPUT(Input,o);
	o.vertexNormal = abs(v.normal); // Aah, this is why normal wasnt Normal!
	}

	void surf (Input IN, inout SurfaceOutputStandard o)
	{
	float2 uv = IN.uv_MainTex;
	float3 normal = IN.vertexNormal;
	float c=0;

	float s1 = 0.37;
	float s2 = 0.8;

	// right panel
	if (normal.z>0.99)
	{
	c= 1-((step(uv.x,0.8)-step(uv.x,0.37))*(step(uv.y,0.63)-step(uv.y,0.2)));
	float l =1-(distance(uv.x,1-uv.y)<0.1&uv.y>0.5);

	o.Albedo = c*l;
	}else{ // other panels

	c = 1-((step(uv.x,s2)-step(uv.x,s1))*(step(uv.y,s2)-step(uv.y,s1))); // lol
	float l =1-(distance(uv.x,uv.y)<0.1&uv.x<0.5); // lolx2
	o.Albedo = c*l;
	}
	o.Metallic = _Metallic;
	o.Smoothness = _Glossiness;
	o.Alpha = 1;
	}
	ENDCG
	}
	FallBack "Diffuse"
	}