Basic GPU window

.gitignore

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+/target

Cargo.toml

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+[package]
+name = "life"
+version = "0.1.0"
+edition = "2021"
+
+[profile.dev]
+panic = 'abort'
+
+[profile.dev.package."*"]
+opt-level = 3
+
+[profile.test.package."*"]
+opt-level = 3
+
+[dependencies]
+bytemuck = "1.21.0"
+glam = { version = "0.29.2", features = ["bytemuck", "fast-math"] }
+pollster = "0.4.0"
+wgpu = "23.0.1"
+winit = "0.30.8"

rustfmt.toml

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+hard_tabs = true
+max_width = 120

src/main.rs

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+use std::error::Error;
+
+use winit::{
+	event::{Event, WindowEvent},
+	event_loop::EventLoop,
+	window::{Window, WindowAttributes},
+};
+
+fn main() {
+	let event_loop = EventLoop::new().unwrap();
+
+	#[allow(deprecated)]
+	let window = &event_loop
+		.create_window(WindowAttributes::new().with_title("GPU life game test"))
+		.unwrap();
+
+	let (device, queue, surface) = pollster::block_on(init_gpu(window)).unwrap();
+
+	let format = wgpu::TextureFormat::Bgra8UnormSrgb;
+	let mut surface_configured = false;
+	#[allow(deprecated)]
+	event_loop
+		.run(move |event, control_flow| match event {
+			Event::WindowEvent { ref event, window_id } if window_id == window.id() => match event {
+				WindowEvent::CloseRequested => control_flow.exit(),
+				WindowEvent::Resized(physical_size) => {
+					surface.configure(
+						&device,
+						&wgpu::SurfaceConfiguration {
+							usage: wgpu::TextureUsages::RENDER_ATTACHMENT | wgpu::TextureUsages::COPY_DST,
+							format,
+							width: physical_size.width,
+							height: physical_size.height,
+							present_mode: wgpu::PresentMode::Fifo,
+							alpha_mode: wgpu::CompositeAlphaMode::Auto,
+							view_formats: vec![],
+							desired_maximum_frame_latency: 2,
+						},
+					);
+					surface_configured = true;
+				}
+				WindowEvent::RedrawRequested => {
+					if !surface_configured {
+						return;
+					}
+					let output = surface.get_current_texture().unwrap();
+					let view = output.texture.create_view(&wgpu::TextureViewDescriptor::default());
+					let mut encoder = device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
+					let render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+						label: None,
+						color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+							view: &view,
+							resolve_target: None,
+							ops: wgpu::Operations {
+								load: wgpu::LoadOp::Clear(wgpu::Color::BLUE),
+								store: wgpu::StoreOp::Store,
+							},
+						})],
+						depth_stencil_attachment: None,
+						occlusion_query_set: None,
+						timestamp_writes: None,
+					});
+					drop(render_pass);
+					queue.submit(std::iter::once(encoder.finish()));
+					output.present();
+				}
+				_ => {}
+			},
+			_ => {}
+		})
+		.unwrap();
+}
+
+async fn init_gpu(wnd: &Window) -> Result<(wgpu::Device, wgpu::Queue, wgpu::Surface), Box<dyn Error>> {
+	let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
+		backends: wgpu::Backends::PRIMARY,
+		..Default::default()
+	});
+	let surface = instance.create_surface(wnd)?;
+	let adapter = instance
+		.request_adapter(&wgpu::RequestAdapterOptions {
+			power_preference: wgpu::PowerPreference::default(),
+			compatible_surface: Some(&surface),
+			force_fallback_adapter: false,
+		})
+		.await
+		.unwrap();
+	let (device, queue) = adapter
+		.request_device(
+			&wgpu::DeviceDescriptor {
+				label: None,
+				required_features: wgpu::Features::empty(),
+				required_limits: wgpu::Limits::default(),
+				memory_hints: Default::default(),
+			},
+			None,
+		)
+		.await
+		.unwrap();
+	Ok((device, queue, surface))
+}