use mepeyew::*;
use raw_window_handle::{HasDisplayHandle, HasWindowHandle};
use winit::{
event::{Event, WindowEvent},
event_loop::{ControlFlow, EventLoop},
window::{Window, WindowBuilder},
};
fn main() {
#[cfg(all(feature = "webgpu", target_arch = "wasm32", target_os = "unknown"))]
wasm::init();
let event_loop = EventLoop::new().unwrap();
let window = WindowBuilder::new().build(&event_loop).unwrap();
let window_size = get_window_size(&window);
let mut extensions = Extensions::new();
extensions
.native_debug(Default::default())
.naga_translation()
.surface_extension(SurfaceConfiguration {
width: window_size.0,
height: window_size.1,
display: window.display_handle().unwrap().as_raw(),
window: window.window_handle().unwrap().as_raw(),
})
.webgpu_init_from_window(WebGpuInitFromWindow {
adapter: String::from("mepeyewAdapter"),
device: String::from("mepeyewDevice"),
canvas_id: Some(String::from("canvas")),
});
let mut context = Context::new(extensions, None).unwrap();
let vs = include_bytes!("shaders/hello_triangle/vs.wgsl");
let fs = include_bytes!("shaders/hello_triangle/fs.wgsl");
let vs = context
.naga_translate_shader_code(
naga_translation::NagaTranslationStage::Vertex,
naga_translation::NagaTranslationInput::Wgsl,
vs,
Default::default(),
)
.unwrap();
let fs = context
.naga_translate_shader_code(
naga_translation::NagaTranslationStage::Fragment,
naga_translation::NagaTranslationInput::Wgsl,
fs,
Default::default(),
)
.unwrap();
let program = context
.new_program(
&ShaderSet::shaders(&[
(
ShaderType::Vertex(VertexBufferInput { args: vec![3, 3] }),
&vs,
),
(ShaderType::Fragment, &fs),
]),
&[],
None,
)
.unwrap();
#[rustfmt::skip]
let vertex_data: Vec<VertexBufferElement> = vec![
0.0, 0.5, 0.0, 1.0, 0.0, 0.0,
-0.5, -0.5, 0.0, 0.0, 1.0, 0.0,
0.5, -0.5, 0.0, 0.0, 0.0, 1.0,
];
#[rustfmt::skip]
let index_data: Vec<IndexBufferElement> = vec![
0, 1, 2
];
let vbo = context
.new_vertex_buffer(&vertex_data, BufferStorageType::Static, None)
.unwrap();
let ibo = context
.new_index_buffer(&index_data, BufferStorageType::Static, None)
.unwrap();
let mut pass = Pass::new(
window_size.0,
window_size.1,
Some(NewPassExt {
depends_on_surface_size: Some(()),
surface_attachment_load_op: Some(PassInputLoadOpColorType::Clear),
..Default::default()
}),
);
let output_attachment = pass.get_surface_local_attachment();
{
let pass_step = pass.add_step();
pass_step
.add_vertex_buffer(vbo)
.set_index_buffer(ibo)
.add_program(program)
.add_write_color(output_attachment);
}
let compiled_pass = context.compile_pass(&pass, None).unwrap();
let mut last_window_size = window_size;
event_loop
.run(move |event, elwt| {
elwt.set_control_flow(ControlFlow::wait_duration(
std::time::Duration::from_millis(16),
));
match event {
Event::WindowEvent {
event: WindowEvent::CloseRequested,
window_id,
} if window_id == window.id() => elwt.exit(),
Event::WindowEvent {
event: WindowEvent::Resized(size),
window_id,
} if window_id == window.id() => {
context
.set_surface_size(size.width as usize, size.height as usize)
.unwrap();
}
Event::WindowEvent {
event: WindowEvent::RedrawRequested,
window_id,
} if window_id == window.id() => {
let window_size = get_window_size(&window);
if last_window_size.0 != window_size.0 || last_window_size.1 != window_size.1 {
context
.set_surface_size(window_size.0, window_size.1)
.unwrap();
}
last_window_size = window_size;
let mut submit = Submit::new();
let mut pass_submit = PassSubmitData::new(compiled_pass);
{
let mut step_submit = StepSubmitData::new();
step_submit
.draw_indexed(program, 0, index_data.len())
.set_viewport(DrawViewport {
x: 0.0,
y: 0.0,
width: window_size.0 as f32,
height: window_size.1 as f32,
});
pass_submit.set_attachment_clear_color(
output_attachment,
ClearColor {
r: 0.0,
g: 0.2,
b: 0.2,
a: 1.0,
},
);
pass_submit.step(step_submit);
}
submit.pass(pass_submit);
context.submit(submit, None).unwrap();
window.request_redraw();
}
_ => (),
}
})
.unwrap();
}
#[allow(unused_variables)]
fn get_window_size(window: &Window) -> (usize, usize) {
#[cfg(all(target_arch = "wasm32", target_os = "unknown"))]
return wasm::get_window_size();
#[cfg(not(all(target_arch = "wasm32", target_os = "unknown")))]
{
let size = window.inner_size();
(size.width as usize, size.height as usize)
}
}
#[cfg(all(feature = "webgpu", target_arch = "wasm32", target_os = "unknown"))]
mod wasm {
use wasm_bindgen::prelude::*;
pub fn init() {
std::panic::set_hook(Box::new(console_error_panic_hook::hook));
}
pub fn get_window_size() -> (usize, usize) {
let window = web_sys::window().unwrap();
let canvas = window
.document()
.unwrap()
.get_element_by_id("canvas")
.unwrap()
.dyn_into::<web_sys::HtmlCanvasElement>()
.unwrap();
(
canvas.client_width() as usize,
canvas.client_height() as usize,
)
}
}