Add basic resources module

src/main.rs

@@ -2,6 +2,7 @@ mod system;
 mod game;
 mod renderer;
 mod input_event;
+mod resources;
 
 use game::Game;
 use specs::*;

src/renderer.rs

@@ -1,4 +1,5 @@
 use std::sync::Arc;
+use std::borrow::Cow;
 
 use async_trait::async_trait;
 
@@ -6,6 +7,8 @@ use async_trait::async_trait;
 //use winit::window::Window;
 use winit::{window::Window, event::WindowEvent};
 
+use crate::resources;
+
 #[async_trait]
 pub trait Renderer {
     //fn new(surface: wgpu::Surface, config: wgpu::SurfaceConfiguration, device: wgpu::Device)
@@ -84,9 +87,10 @@ impl BasicRenderer {
         };
         surface.configure(&device, &config);
 
+        let shader_src = resources::load_string("shader.wgsl").await.expect("Failed to load shader!");
         let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
             label: Some("Shader"),
-            source: wgpu::ShaderSource::Wgsl(include_str!("shader.wgsl").into()),
+            source: wgpu::ShaderSource::Wgsl(Cow::Borrowed(&shader_src)),
         });
 
         // Create a render pipeline. At some point this will be created by something else and given to the renderer

src/resources.rs

@@ -0,0 +1,28 @@
+use cfg_if::cfg_if;
+
+/// Load bytes from a file.
+pub async fn load_bytes(file_name: &str) -> anyhow::Result<Vec<u8>> {
+    cfg_if! {
+        if #[cfg(target_arch = "wasm32")] {
+            let url = format_url(file_name);
+            let bytes = reqwest::get(url)
+                .await?
+                .bytes()
+                .await?;
+        } else {
+            let out_dir = std::env::var("OUT_DIR").unwrap_or(String::new());
+            let path = std::path::Path::new(&out_dir)
+                .join("res")
+                .join(file_name);
+            let bytes = std::fs::read(path)?;
+        }
+    }
+
+    Ok(bytes)
+}
+
+/// Load the string content from a file.
+pub async fn load_string(file_name: &str) -> anyhow::Result<String> {
+    let bytes = load_bytes(file_name).await?;
+    Ok(String::from(std::str::from_utf8(&bytes)?))
+}