diff --git a/src/main.rs b/src/main.rs
index ef0c8f6..647fbfc 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
 mod vulkan;
+mod shader;
 
 fn main() {
     vulkan::init();
diff --git a/src/vulkan/composite.rs b/src/shader/composite.rs
similarity index 100%
rename from src/vulkan/composite.rs
rename to src/shader/composite.rs
diff --git a/src/shader/mod.rs b/src/shader/mod.rs
index 2aede5f..ca75ecc 100644
--- a/src/shader/mod.rs
+++ b/src/shader/mod.rs
@@ -7,7 +7,7 @@ use vulkano::pipeline::graphics::vertex_input::Vertex;
 use vulkano::pipeline::graphics::viewport::ViewportState;
 use vulkano::pipeline::GraphicsPipeline;
 use vulkano::render_pass::{RenderPass, Subpass};
-use crate::Vertex2d;
+use crate::vulkan::Vertex2d;
 
 pub fn create_program(render_pass: &Arc<RenderPass>, device: &Arc<Device>) -> Arc<GraphicsPipeline> {
 
diff --git a/src/vulkan/mod.rs b/src/vulkan/mod.rs
index b64d66e..9a1c2d2 100644
--- a/src/vulkan/mod.rs
+++ b/src/vulkan/mod.rs
@@ -1,4 +1,3 @@
-mod composite;
 
 use std::sync::Arc;
 use vulkano::device::{Device, DeviceCreateInfo, DeviceExtensions, Properties, Queue, QueueCreateInfo, QueueFlags};
@@ -26,7 +25,7 @@ use winit::event::{Event, WindowEvent};
 // guarantees*.
 #[derive(BufferContents, Vertex)]
 #[repr(C)]
-struct Vertex2d {
+pub(crate) struct Vertex2d {
     #[format(R32G32_SFLOAT)]
     position: [f32; 2],
     #[format(R32G32_SFLOAT)]
@@ -153,7 +152,7 @@ pub fn init() {
     // that, we store the submission of the previous frame here.
     let mut previous_frame_end = Some(sync::now(device.clone()).boxed());
 
-    let pipeline = composite::create_program(&render_pass, &device);
+    let pipeline = crate::shader::create_program(&render_pass, &device);
 
     event_loop.run(move |event, _, control_flow| {
         match event {