commit b24aace0929c1ad459e0aa58cf559c160585e518 Author: Romain Quinet Date: Fri Sep 15 19:37:35 2023 +0200 intial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..95fa740 --- /dev/null +++ b/.gitignore @@ -0,0 +1,16 @@ +# Generated by Cargo +# will have compiled files and executables +debug/ +target/ + +# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries +# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html +Cargo.lock + +# These are backup files generated by rustfmt +**/*.rs.bk + +# MSVC Windows builds of rustc generate these, which store debugging information +*.pdb + +.idea/ \ No newline at end of file diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..2133251 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,13 @@ +[package] +name = "rust-game-engine" +version = "0.1.0" +edition = "2021" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] +bytemuck = "1.14.0" +env_logger = "0.10.0" +pollster = "0.3.0" +wgpu = "0.17.0" +winit = "0.28.6" \ No newline at end of file diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..2e689ef --- /dev/null +++ b/src/main.rs @@ -0,0 +1,166 @@ +use std::borrow::Cow; +use winit::{ + event::{Event, WindowEvent}, + event_loop::{ControlFlow, EventLoop}, + window::Window, +}; + +async fn run(event_loop: EventLoop<()>, window: Window) { + let size = window.inner_size(); + + let instance = wgpu::Instance::default(); + + let surface = unsafe { instance.create_surface(&window) }.unwrap(); + let adapter = instance + .request_adapter(&wgpu::RequestAdapterOptions { + power_preference: wgpu::PowerPreference::default(), + force_fallback_adapter: false, + // Request an adapter which can render to our surface + compatible_surface: Some(&surface), + }) + .await + .expect("Failed to find an appropriate adapter"); + + // Create the logical device and command queue + let (device, queue) = adapter + .request_device( + &wgpu::DeviceDescriptor { + label: None, + features: wgpu::Features::empty(), + // Make sure we use the texture resolution limits from the adapter, so we can support images the size of the swapchain. + limits: wgpu::Limits::downlevel_webgl2_defaults() + .using_resolution(adapter.limits()), + }, + None, + ) + .await + .expect("Failed to create device"); + + // Load the shaders from disk + let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor { + label: None, + source: wgpu::ShaderSource::Wgsl(Cow::Borrowed(include_str!("shader.wgsl"))), + }); + + let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor { + label: None, + bind_group_layouts: &[], + push_constant_ranges: &[], + }); + + let swapchain_capabilities = surface.get_capabilities(&adapter); + let swapchain_format = swapchain_capabilities.formats[0]; + + let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor { + label: None, + layout: Some(&pipeline_layout), + vertex: wgpu::VertexState { + module: &shader, + entry_point: "vs_main", + buffers: &[], + }, + fragment: Some(wgpu::FragmentState { + module: &shader, + entry_point: "fs_main", + targets: &[Some(swapchain_format.into())], + }), + primitive: wgpu::PrimitiveState::default(), + depth_stencil: None, + multisample: wgpu::MultisampleState::default(), + multiview: None, + }); + + let mut config = wgpu::SurfaceConfiguration { + usage: wgpu::TextureUsages::RENDER_ATTACHMENT, + format: swapchain_format, + width: size.width, + height: size.height, + present_mode: wgpu::PresentMode::Fifo, + alpha_mode: swapchain_capabilities.alpha_modes[0], + view_formats: vec![], + }; + + surface.configure(&device, &config); + + event_loop.run(move |event, _, control_flow| { + // Have the closure take ownership of the resources. + // `event_loop.run` never returns, therefore we must do this to ensure + // the resources are properly cleaned up. + let _ = (&instance, &adapter, &shader, &pipeline_layout); + + *control_flow = ControlFlow::Wait; + match event { + Event::WindowEvent { + event: WindowEvent::Resized(size), + .. + } => { + // Reconfigure the surface with the new size + config.width = size.width; + config.height = size.height; + surface.configure(&device, &config); + // On macos the window needs to be redrawn manually after resizing + window.request_redraw(); + } + Event::RedrawRequested(_) => { + let frame = surface + .get_current_texture() + .expect("Failed to acquire next swap chain texture"); + let view = frame + .texture + .create_view(&wgpu::TextureViewDescriptor::default()); + let mut encoder = + device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None }); + { + let mut rpass = 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::GREEN), + store: true, + }, + })], + depth_stencil_attachment: None, + }); + rpass.set_pipeline(&render_pipeline); + rpass.draw(0..3, 0..1); + } + + queue.submit(Some(encoder.finish())); + frame.present(); + } + Event::WindowEvent { + event: WindowEvent::CloseRequested, + .. + } => *control_flow = ControlFlow::Exit, + _ => {} + } + }); +} + +fn main() { + let event_loop = EventLoop::new(); + let window = winit::window::Window::new(&event_loop).unwrap(); + #[cfg(not(target_arch = "wasm32"))] + { + env_logger::init(); + pollster::block_on(run(event_loop, window)); + } + #[cfg(target_arch = "wasm32")] + { + std::panic::set_hook(Box::new(console_error_panic_hook::hook)); + console_log::init().expect("could not initialize logger"); + use winit::platform::web::WindowExtWebSys; + // On wasm, append the canvas to the document body + web_sys::window() + .and_then(|win| win.document()) + .and_then(|doc| doc.body()) + .and_then(|body| { + body.append_child(&web_sys::Element::from(window.canvas())) + .ok() + }) + .expect("couldn't append canvas to document body"); + wasm_bindgen_futures::spawn_local(run(event_loop, window)); + } +} \ No newline at end of file diff --git a/src/shader.wgsl b/src/shader.wgsl new file mode 100644 index 0000000..859ffa4 --- /dev/null +++ b/src/shader.wgsl @@ -0,0 +1,11 @@ +@vertex +fn vs_main(@builtin(vertex_index) in_vertex_index: u32) -> @builtin(position) vec4 { + let x = f32(i32(in_vertex_index) - 1); + let y = f32(i32(in_vertex_index & 1u) * 2 - 1); + return vec4(x, y, 0.0, 1.0); +} + +@fragment +fn fs_main() -> @location(0) vec4 { + return vec4(1.0, 0.0, 0.0, 1.0); +} \ No newline at end of file