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use wgpu::*;
use winit::{
dpi::PhysicalSize,
event::{Event, WindowEvent},
event_loop::ControlFlow,
window::Window,
};
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pub async fn run() -> Result<()> {
let event_loop = winit::event_loop::EventLoop::new();
let window = Window::new(&event_loop)?;
window.set_inner_size(PhysicalSize::new(1280, 720));
#[cfg(target_arch = "wasm32")]
{
use winit::platform::web::WindowExtWebSys;
web_sys::window()
.and_then(|win| win.document())
.and_then(|doc| {
let dst = doc.get_element_by_id("gmtk-game")?;
let canvas = web_sys::Element::from(window.canvas());
dst.append_child(&canvas).ok()?;
Some(())
})
.unwrap();
}
let instance = Instance::new(InstanceDescriptor {
backends: Backends::all(),
dx12_shader_compiler: Default::default(),
});
let surface = unsafe { instance.create_surface(&window) }?;
let adapter = instance
.request_adapter(&RequestAdapterOptions {
power_preference: PowerPreference::HighPerformance,
compatible_surface: Some(&surface),
force_fallback_adapter: false,
})
.await
.ok_or(anyhow!("No compatible adapter"))?;
info!("{:#?}", adapter.get_info());
let (device, queue) = adapter
.request_device(
&DeviceDescriptor {
label: Some("GMTK"),
features: Features::empty(),
limits: Limits::downlevel_webgl2_defaults().using_resolution(adapter.limits()),
},
None,
)
.await?;
let format = if surface
.get_capabilities(&adapter)
.formats
.contains(&TextureFormat::Bgra8Unorm)
{
TextureFormat::Bgra8Unorm
} else {
TextureFormat::Rgba8Unorm
};
let mut reconfigure = true;
let mut framebuffer = device.create_texture(&TextureDescriptor {
label: Some("Framebuffer"),
size: Default::default(),
mip_level_count: 1,
sample_count: 4,
dimension: TextureDimension::D2,
format,
usage: TextureUsages::RENDER_ATTACHMENT,
view_formats: &[],
});
let mut depthbuffer = device.create_texture(&TextureDescriptor {
label: Some("Depthbuffer"),
size: Default::default(),
mip_level_count: 1,
sample_count: 4,
dimension: TextureDimension::D2,
format: TextureFormat::Depth24Plus,
usage: TextureUsages::RENDER_ATTACHMENT,
view_formats: &[],
});
event_loop.run(move |event, _target, control_flow| {
*control_flow = ControlFlow::Poll;
if reconfigure {
let (width, height) = window.inner_size().into();
surface.configure(
&device,
&SurfaceConfiguration {
usage: TextureUsages::RENDER_ATTACHMENT,
format,
width,
height,
present_mode: PresentMode::AutoNoVsync,
alpha_mode: CompositeAlphaMode::Opaque,
},
);
framebuffer = device.create_texture(&TextureDescriptor {
label: Some("Framebuffer"),
size: Extent3d {
width,
height,
depth_or_array_layers: 1,
},
mip_level_count: framebuffer.mip_level_count(),
sample_count: framebuffer.sample_count(),
dimension: framebuffer.dimension(),
format: framebuffer.format(),
usage: framebuffer.usage(),
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});
depthbuffer = device.create_texture(&TextureDescriptor {
label: Some("Depthbuffer"),
size: Extent3d {
width,
height,
depth_or_array_layers: 1,
},
mip_level_count: depthbuffer.mip_level_count(),
sample_count: depthbuffer.sample_count(),
dimension: depthbuffer.dimension(),
format: depthbuffer.format(),
usage: depthbuffer.usage(),
view_formats: &[],
});
reconfigure = false;
}
match event {
Event::MainEventsCleared => {
let Ok(swapchain) = surface.get_current_texture() else {
reconfigure = true;
warn!("Swapchain acquisition failed, reconfiguring surface");
return
};
// Recreate swapchain if suboptimal configuration
reconfigure |= swapchain.suboptimal;
let mut enc = device.create_command_encoder(&CommandEncoderDescriptor {
label: Some("Main encoder"),
});
let fb_view = framebuffer.create_view(&Default::default());
let rs_view = swapchain.texture.create_view(&Default::default());
let db_view = depthbuffer.create_view(&Default::default());
let mut pass = enc.begin_render_pass(&RenderPassDescriptor {
label: Some("Clear"),
color_attachments: &[Some(RenderPassColorAttachment {
view: &fb_view,
resolve_target: Some(&rs_view),
ops: Operations {
load: LoadOp::Clear(Color::BLACK),
store: true,
})],
depth_stencil_attachment: Some(RenderPassDepthStencilAttachment {
view: &db_view,
depth_ops: Some(Operations {
load: LoadOp::Clear(1.0),
store: true,
}),
stencil_ops: None,
});
let aspect =
window.inner_size().width as f32 / window.inner_size().height as f32;
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queue.submit([enc.finish()]);
swapchain.present();
}
Event::WindowEvent { event, .. } => match event {
WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
WindowEvent::Resized(_) => reconfigure = true,
_ => (),
},
_ => (),
}
});
}
async fn test() {
match run().await {
Ok(()) => info!("Clean exit"),
Err(err) => error!("Runtime error: {err}"),
}
}
#[cfg(target_arch = "wasm32")]
pub fn main() {
console_log::init_with_level(log::Level::Info).expect("Failed to initialize logger");
std::panic::set_hook(Box::new(console_error_panic_hook::hook));
wasm_bindgen_futures::spawn_local(test());
}
#[cfg(not(target_arch = "wasm32"))]
pub fn main() {
env_logger::builder()
.filter_level(log::LevelFilter::Trace)
.filter(Some("wgpu_core"), log::LevelFilter::Warn)
.parse_default_env()
.init();
pollster::block_on(test());
}