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extern crate objc;
use cocoa::{appkit::NSView, base::id as cocoa_id};
use core_graphics_types::geometry::CGSize;
use metal::*;
use objc::{rc::autoreleasepool, runtime::YES};
use std::mem;
use winit::{
event::{Event, WindowEvent},
event_loop::ControlFlow,
raw_window_handle::{HasWindowHandle, RawWindowHandle},
};
pub mod camera;
pub mod geometry;
pub mod renderer;
pub mod scene;
fn find_raytracing_supporting_device() -> Device {
for device in Device::all() {
if !device.supports_raytracing() {
continue;
}
if device.is_low_power() {
continue;
}
return device;
}
panic!("No device in this machine supports raytracing!")
}
fn main() {
let event_loop = winit::event_loop::EventLoop::new().unwrap();
let size = winit::dpi::LogicalSize::new(800, 600);
let window = winit::window::WindowBuilder::new()
.with_inner_size(size)
.with_title("Metal Raytracing Example".to_string())
.build(&event_loop)
.unwrap();
let device = find_raytracing_supporting_device();
let layer = MetalLayer::new();
layer.set_device(&device);
layer.set_pixel_format(MTLPixelFormat::RGBA16Float);
layer.set_presents_with_transaction(false);
unsafe {
if let Ok(RawWindowHandle::AppKit(rw)) = window.window_handle().map(|wh| wh.as_raw()) {
let view = rw.ns_view.as_ptr() as cocoa_id;
view.setWantsLayer(YES);
view.setLayer(mem::transmute(layer.as_ref()));
}
}
let draw_size = window.inner_size();
let cg_size = CGSize::new(draw_size.width as f64, draw_size.height as f64);
layer.set_drawable_size(cg_size);
let mut renderer = renderer::Renderer::new(device);
renderer.window_resized(cg_size);
event_loop
.run(move |event, event_loop| {
autoreleasepool(|| {
event_loop.set_control_flow(ControlFlow::Poll);
match event {
Event::AboutToWait => window.request_redraw(),
Event::WindowEvent { event, .. } => match event {
WindowEvent::CloseRequested => event_loop.exit(),
WindowEvent::Resized(size) => {
let size = CGSize::new(size.width as f64, size.height as f64);
layer.set_drawable_size(size);
renderer.window_resized(size);
}
WindowEvent::RedrawRequested => {
renderer.draw(&layer);
}
_ => (),
},
_ => {}
}
});
})
.unwrap();
}