Shader that uses world-space coordinates to sample textures

WorldSpaceTextures.shader

Shader "Unlit/WorldSpaceTextures"
{
	Properties
	{
		_MainTex ("Texture", 2D) = "white" {}
	}
	SubShader
	{
		Tags { "RenderType"="Opaque" }
		LOD 100

		Pass
		{
			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			
			#include "UnityCG.cginc"

			struct appdata
			{
				float4 vertex : POSITION;
				float3 normal : NORMAL;
				float3 tangent : TANGENT;
			};

			struct v2f
			{
				float2 uv : TEXCOORD0;
				float4 vertex : SV_POSITION;
			};

			sampler2D _MainTex;
			float4 _MainTex_ST;
			
			v2f vert (appdata v)
			{
				v2f o;
				o.vertex = UnityObjectToClipPos(v.vertex);
				float3 worldSpacePosition = mul(unity_ObjectToWorld, v.vertex);
				float3 worldNormal = normalize(mul(unity_ObjectToWorld, float4(v.normal, 0.0)).xyz);
				float3 worldTangent = normalize(mul(unity_ObjectToWorld, float4(v.tangent, 0.0)).xyz);
				float3 worldBinormal = cross(worldNormal, worldTangent);
				float2 calcUVs = float2(dot(worldTangent, worldSpacePosition), dot(worldBinormal, worldSpacePosition));
				o.uv = TRANSFORM_TEX(calcUVs, _MainTex);
				return o;
			}
			
			fixed4 frag (v2f i) : SV_Target
			{
				fixed4 col = tex2D(_MainTex, i.uv);
				return col;
			}
			ENDCG
		}
	}
}