Open
Description
Technical details & libs versions:
Libs:
winit = "0.30.7"
softbuffer = "0.4.6"Machine:
MacBook Pro with M3
macOS: Sonoma 14.6.1
Hi! During developing software rendering I've decided to switch making render itself in separated thread and attempted to run example from examples/winit_multithread.rs, but got a problem that program is "stuck" at let size = window.inner_size();:
starting thread...
making surface...
waiting for render...
In docs for inner_size is see that
Platform-specific
iOS: Can only be called on the main thread.
But is it also applied to macOS platform?
I tried to remove fetching window size and it works (I've added a little code to see that different thread rendering works):
fn render_thread(
window: Arc<Window>,
do_render: mpsc::Receiver<Arc<Mutex<Surface>>>,
done: mpsc::Sender<()>,
) {
let mut c: u32 = 0u32;
loop {
println!("waiting for render...");
let Ok(surface) = do_render.recv() else {
println!("main thread destroyed");
break;
};
// Perform the rendering.
let mut surface = surface.lock().unwrap();
let (Some(width), Some(height)) = (NonZeroU32::new(1024), NonZeroU32::new(1024)) else { todo!() };
surface.resize(width, height).unwrap();
let mut buffer = surface.buffer_mut().unwrap();
for y in 0..height.get() {
for x in 0..width.get() {
let red = (x + c) % 255;
let green = (y + c) % 255;
let blue = (x * y + c) % 255;
let index = y as usize * width.get() as usize + x as usize;
buffer[index] = blue | (green << 8) | (red << 16);
}
}
println!("presenting...");
buffer.present().unwrap();
// We're done, tell the main thread to keep going.
done.send(()).ok();
c += 1;
}
}