Chiba City Skybox for Unity

ChibaCity.shader

Shader "Skybox/ChibaCity"
{
	CGINCLUDE

	struct appdata
	{
		float4 vertex : POSITION;
		float3 texcoord : TEXCOORD0;
	};

	struct v2f
	{
		float4 vertex : SV_POSITION;
		float3 texcoord : TEXCOORD0;
	};

	float random(fixed2 p) {
		return frac(sin(dot(p, fixed2(12.9898,78.233))) * 43758.5453);
	}

	v2f vert(appdata v)
	{
		v2f o;
		o.vertex = UnityObjectToClipPos(v.vertex);
		o.texcoord = fixed4(1, 1, 1, 1);
		return o;
	}

	fixed4 frag(v2f i) : SV_Target
	{
		float c = random(i.vertex.xy * _SinTime) * pow(i.vertex.y * 0.001, 3.0);
		return fixed4(c * 0.9,c * 0.8, c, 1.0);
	}

	ENDCG

	SubShader
	{
		Tags{ "RenderType" = "Background" "Queue" = "Background" "PreviewType" = "SkyBox" }
		LOD 200
		Pass
		{
			ZWrite Off
			Cull Off
			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			ENDCG
		}
	}
}