diff --git a/src/main.rs b/src/main.rs
index da5b1fa..669eea0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,16 +1,8 @@
 mod materials;
 
-use bevy::{
-    pbr::{MaterialPipeline, MaterialPipelineKey},
-    prelude::*,
-    reflect::TypeUuid,
-    render::{
-        mesh::MeshVertexBufferLayout,
-        render_resource::{
-            AsBindGroup, RenderPipelineDescriptor, ShaderRef, SpecializedMeshPipelineError,
-        },
-    },
-};
+use bevy::prelude::*;
+
+use materials::{RepeatMaterial, SolidMaterial};
 
 fn startup(
     mut commands: Commands,
@@ -18,7 +10,7 @@ fn startup(
     mut meshes: ResMut<Assets<Mesh>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
     mut tiled_materials: ResMut<Assets<RepeatMaterial>>,
-    mut solid_materials: ResMut<Assets<materials::SolidMaterial>>,
+    mut solid_materials: ResMut<Assets<SolidMaterial>>,
 ) {
     let grid_texture = assets.load("grid-texture.png");
 
@@ -28,7 +20,7 @@ fn startup(
         alpha_mode: AlphaMode::Blend,
     });
 
-    let solid_material = solid_materials.add(materials::SolidMaterial{});
+    let solid_material = solid_materials.add(materials::SolidMaterial {});
 
     // a ground plane
     commands.spawn(MaterialMeshBundle {
@@ -80,48 +72,6 @@ fn startup(
     });
 }
 
-#[derive(AsBindGroup, Clone, TypeUuid)]
-#[uuid = "d57ae039-8c67-4004-9370-5c522e256515"]
-pub struct RepeatMaterial {
-    #[uniform(0)]
-    color: Color,
-
-    #[texture(1)]
-    #[sampler(2)]
-    color_texture: Option<Handle<Image>>,
-
-    alpha_mode: AlphaMode,
-}
-
-impl Material for RepeatMaterial {
-    fn vertex_shader() -> ShaderRef {
-        "shaders/repeat.vert".into()
-    }
-
-    fn fragment_shader() -> ShaderRef {
-        "shaders/repeat.frag".into()
-    }
-
-    fn alpha_mode(&self) -> AlphaMode {
-        self.alpha_mode
-    }
-
-    fn specialize(
-        _: &MaterialPipeline<Self>,
-        descriptor: &mut RenderPipelineDescriptor,
-        _: &MeshVertexBufferLayout,
-        _: MaterialPipelineKey<Self>,
-    ) -> Result<(), SpecializedMeshPipelineError> {
-        descriptor.vertex.entry_point = "main".into();
-        let mut frag = descriptor
-            .fragment
-            .as_mut()
-            .expect("should have a fragment entry point here");
-        frag.entry_point = "main".into();
-        Ok(())
-    }
-}
-
 fn main() {
     App::new()
         .add_plugins(DefaultPlugins)
diff --git a/src/materials.rs b/src/materials.rs
index 4f42d1f..f560f01 100644
--- a/src/materials.rs
+++ b/src/materials.rs
@@ -1,3 +1,6 @@
 mod solid;
+mod repeat;
 
 pub use solid::SolidMaterial;
+pub use repeat::RepeatMaterial;
+
diff --git a/src/materials/repeat.rs b/src/materials/repeat.rs
new file mode 100644
index 0000000..61b0a14
--- /dev/null
+++ b/src/materials/repeat.rs
@@ -0,0 +1,55 @@
+use bevy::{
+    asset::Handle,
+    pbr::{AlphaMode, Material, MaterialPipeline, MaterialPipelineKey},
+    reflect::TypeUuid,
+    render::{
+        color::Color,
+        mesh::MeshVertexBufferLayout,
+        render_resource::{
+            AsBindGroup, RenderPipelineDescriptor, ShaderRef, SpecializedMeshPipelineError,
+        },
+        texture::Image,
+    },
+};
+
+#[derive(AsBindGroup, Clone, TypeUuid)]
+#[uuid = "d57ae039-8c67-4004-9370-5c522e256515"]
+pub struct RepeatMaterial {
+    #[uniform(0)]
+    pub color: Color,
+
+    #[texture(1)]
+    #[sampler(2)]
+    pub color_texture: Option<Handle<Image>>,
+
+    pub alpha_mode: AlphaMode,
+}
+
+impl Material for RepeatMaterial {
+    fn vertex_shader() -> ShaderRef {
+        "shaders/repeat.vert".into()
+    }
+
+    fn fragment_shader() -> ShaderRef {
+        "shaders/repeat.frag".into()
+    }
+
+    fn alpha_mode(&self) -> AlphaMode {
+        self.alpha_mode
+    }
+
+    fn specialize(
+        _: &MaterialPipeline<Self>,
+        descriptor: &mut RenderPipelineDescriptor,
+        _: &MeshVertexBufferLayout,
+        _: MaterialPipelineKey<Self>,
+    ) -> Result<(), SpecializedMeshPipelineError> {
+        descriptor.vertex.entry_point = "main".into();
+        let mut frag = descriptor
+            .fragment
+            .as_mut()
+            .expect("should have a fragment entry point here");
+        frag.entry_point = "main".into();
+        Ok(())
+    }
+}