diff --git a/src/bin/envmap/perlin.wgsl b/shaders/perlin.wgsl
similarity index 100%
rename from src/bin/envmap/perlin.wgsl
rename to shaders/perlin.wgsl
diff --git a/src/bin/envmap/main.rs b/src/bin/envmap/main.rs
index 98fb418..0a976b2 100644
--- a/src/bin/envmap/main.rs
+++ b/src/bin/envmap/main.rs
@@ -1,15 +1,13 @@
 use std::error::Error;
 
 use glam::{vec2, vec3};
-use perlin::{Pipeline, Vertex};
+use raytracing3::perlin::{self, Pipeline, Vertex};
 use winit::{
 	event::{Event, WindowEvent},
 	event_loop::EventLoop,
 	window::{Window, WindowAttributes},
 };
 
-mod perlin;
-
 fn make_viewport(w: u32, h: u32) -> [Vertex; 4] {
 	let w = w as f32;
 	let h = h as f32;
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..dc06e2a
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1 @@
+pub mod perlin;
diff --git a/src/bin/envmap/perlin.rs b/src/perlin.rs
similarity index 97%
rename from src/bin/envmap/perlin.rs
rename to src/perlin.rs
index 3e20c0b..2fb3a48 100644
--- a/src/bin/envmap/perlin.rs
+++ b/src/perlin.rs
@@ -42,7 +42,7 @@ impl Pipeline {
 			mapped_at_creation: false,
 		});
 
-		let shader = fs::read_to_string("src/bin/envmap/perlin.wgsl").unwrap();
+		let shader = fs::read_to_string("shaders/perlin.wgsl").unwrap();
 		let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
 			label: None,
 			source: wgpu::ShaderSource::Wgsl(shader.into()),