[RENDERER] Begin refactor

Cargo.lock

@@ -1688,6 +1688,14 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "render"
+version = "0.1.0"
+dependencies = [
+ "wgpu",
+ "winit",
+]
+
 [[package]]
 name = "renderdoc-sys"
 version = "0.7.1"
@@ -2061,6 +2069,7 @@ dependencies = [
  "log",
  "pollster",
  "rayon",
+ "render",
  "reqwest",
  "tobj",
  "wasm-bindgen",

Cargo.toml

@@ -8,6 +8,8 @@ edition = "2021"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
+render = { path = "crates/render" }
+
 cfg-if = "1"
 anyhow = "1.0"
 bytemuck = { version = "1.9.1", features = [ "derive" ] }

crates/render/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "render"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+winit = "0.26"
+wgpu = { version = "0.13"}

crates/render/src/graphics_renderer.rs

@@ -1,20 +1,18 @@
 use std::iter;
 
-use winit::{event::Event, window::Window};
+use wgpu::{CommandEncoder, TextureView};
+use winit::window::Window;
 
-use super::State;
-
-pub struct Renderer {
+pub struct GraphicsRenderer {
     pub surface: wgpu::Surface,
     pub device: wgpu::Device,
     pub queue: wgpu::Queue,
     pub size: winit::dpi::PhysicalSize<u32>,
     pub config: wgpu::SurfaceConfiguration,
-    state: Option<Box<dyn State>>,
 }
 
-impl Renderer {
-    pub async fn new(window: &Window) -> Self {
+impl GraphicsRenderer {
+    pub async fn initialize(window: &Window) -> Self {
         let size = window.inner_size();
 
         // The instance is a handle to our GPU
@@ -63,7 +61,6 @@ impl Renderer {
             queue,
             config,
             size,
-            state: None,
         }
     }
 
@@ -73,27 +70,13 @@ impl Renderer {
             self.config.width = new_size.width;
             self.config.height = new_size.height;
             self.surface.configure(&self.device, &self.config);
-
-            if let Some(state) = self.state.as_mut() {
-                state.resize(&self.device, &self.config, new_size);
-            }
         }
     }
 
-    pub fn input(&mut self, event: &Event<()>) -> bool {
-        if let Some(state) = self.state.as_mut() {
-            return state.input(event);
-        }
-        false
-    }
-
-    pub fn update(&mut self, dt: instant::Duration) {
-        if let Some(state) = self.state.as_mut() {
-            state.update(&self.queue, dt);
-        }
-    }
-
-    pub fn render(&mut self) -> Result<(), wgpu::SurfaceError> {
+    pub fn render_frame<T>(&mut self, render: T) -> Result<(), wgpu::SurfaceError>
+    where
+        T: Fn(&TextureView, &mut CommandEncoder) -> Result<(), wgpu::SurfaceError>,
+    {
         let output = self.surface.get_current_texture()?;
         let view = output
             .texture
@@ -105,16 +88,10 @@ impl Renderer {
                 label: Some("Render Encoder"),
             });
 
-        if let Some(state) = self.state.as_mut() {
-            state.render(&view, &mut encoder)?;
-            self.queue.submit(iter::once(encoder.finish()));
-            output.present();
-        }
+        render(&view, &mut encoder)?;
+        self.queue.submit(iter::once(encoder.finish()));
+        output.present();
 
         Ok(())
     }
-
-    pub fn set_state(&mut self, state: Option<Box<dyn State>>) {
-        self.state = state;
-    }
 }

crates/render/src/lib.rs

@@ -0,0 +1,10 @@
+pub mod graphics_renderer;
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        let result = 2 + 2;
+        assert_eq!(result, 4);
+    }
+}

src/lib.rs

@@ -1,6 +1,7 @@
 use std::{ops::Deref, sync::Arc};
 
 use cgmath::prelude::*;
+use ::render::graphics_renderer::GraphicsRenderer;
 use winit::{
     event::*,
     event_loop::{ControlFlow, EventLoop},
@@ -9,7 +10,7 @@ use winit::{
 #[cfg(target_arch = "wasm32")]
 use wasm_bindgen::prelude::*;
 
-use crate::render::{DefaultState, Renderer};
+use crate::render::{DefaultState, State};
 
 mod camera;
 mod model;
@@ -156,22 +157,21 @@ pub async fn run() {
             .expect("Couldn't append canvas to document body.");
     }
 
-    let mut renderer = Arc::from(Renderer::new(&window).await);
-    let default_state = Box::from(DefaultState::new(renderer.deref()).await);
-    Arc::get_mut(&mut renderer)
-        .unwrap()
-        .set_state(Some(default_state));
+    let mut renderer = Arc::from(GraphicsRenderer::initialize(&window).await);
+    let mut default_state = Arc::from(DefaultState::new(renderer.deref()).await);
+
     let mut last_render_time = instant::Instant::now();
     event_loop.run(move |base_event, _, control_flow| {
         *control_flow = ControlFlow::Poll;
         let renderer = Arc::get_mut(&mut renderer).unwrap();
+        let state = Arc::get_mut(&mut default_state).unwrap();
 
         match base_event {
             Event::MainEventsCleared => window.request_redraw(),
             Event::WindowEvent {
                 ref event,
                 window_id,
-            } if window_id == window.id() && !renderer.input(&base_event) => match event {
+            } if window_id == window.id() && !state.input(&base_event) => match event {
                 #[cfg(not(target_arch = "wasm32"))]
                 WindowEvent::CloseRequested
                 | WindowEvent::KeyboardInput {
@@ -190,15 +190,20 @@ pub async fn run() {
                     renderer.resize(**new_inner_size);
                 }
                 _ => {
-                    renderer.input(&base_event);
+                    state.input(&base_event);
                 }
             },
             Event::RedrawRequested(window_id) if window_id == window.id() => {
                 let now = instant::Instant::now();
                 let dt = now - last_render_time;
                 last_render_time = now;
-                renderer.update(dt);
-                match renderer.render() {
+                state.update(&renderer.queue, dt);
+
+                match renderer.render_frame(|view, command| {
+                    let mut renderable = Arc::clone(&default_state);
+                    let state = Arc::get_mut(&mut renderable).unwrap();
+                    state.render(view, command)
+                }) {
                     Ok(_) => {}
                     Err(wgpu::SurfaceError::Lost | wgpu::SurfaceError::Outdated) => {
                         renderer.resize(renderer.size)
@@ -208,7 +213,7 @@ pub async fn run() {
                 }
             }
             _ => {
-                renderer.input(&base_event);
+                state.input(&base_event);
             }
         }
     });

src/render/mod.rs

@@ -4,4 +4,4 @@ pub use pipelines::utils::create_render_pipeline;
 pub use pipelines::{GlobalBindLayout, Pipelines};
 
 mod renderer;
-pub use renderer::{DefaultState, Renderer, State};
+pub use renderer::{DefaultState, State};

src/render/renderer/default_state.rs

@@ -2,6 +2,7 @@ use cgmath::prelude::*;
 
 #[cfg(not(target_arch="wasm32"))]
 use rayon::prelude::*;
+use ::render::graphics_renderer::GraphicsRenderer;
 use wgpu::{util::DeviceExt, Queue};
 use winit::event::{DeviceEvent, ElementState, Event, KeyboardInput, MouseButton, WindowEvent};
 
@@ -11,8 +12,6 @@ use crate::{
     render, resources, texture, CameraUniform, Instance, LightUniform, NUM_INSTANCES_PER_ROW,
 };
 
-use super::Renderer;
-
 pub struct DefaultState {
     obj_model: model::Model,
     camera: camera::Camera,
@@ -35,7 +34,7 @@ pub struct DefaultState {
 }
 
 impl DefaultState {
-    pub async fn new(renderer: &Renderer) -> Self
+    pub async fn new(renderer: &GraphicsRenderer) -> Self
     {
         let global_bind_layout = render::GlobalBindLayout::new(&renderer.device);
         let pipelines =

src/render/renderer/mod.rs

@@ -1,7 +1,3 @@
-mod renderer;
-
-pub use renderer::Renderer;
-
 mod default_state;
 pub use default_state::DefaultState;