129069996e
A `Context` is created with a display handle, and a `Surface` is created with a `&Context` and a window handle. Thus multiple windows can be created from the same context without duplicating anything that can be shared. This API is broadly similar to `wgpu` or `glutin`. On Wayland, the `Context` contains the `EventQueue`, which is shared between windows, and the `WlShm` global. On X11, `Context::new` checks for the availability of XShm, and contains a bool representing that as well as the `XCBConnection`. The shared context data is stored within the window in an `Arc`. On other platforms, the display isn't used and `Context` is empty. This does however test that the display handle has the right type on those platforms and fail otherwise. Previously the code didn't test that. Closes https://github.com/rust-windowing/softbuffer/issues/37.
59 lines
1.8 KiB
Rust
59 lines
1.8 KiB
Rust
use winit::event::{Event, WindowEvent};
|
|
use winit::event_loop::{ControlFlow, EventLoop};
|
|
use winit::window::WindowBuilder;
|
|
|
|
const BUFFER_WIDTH: usize = 256;
|
|
const BUFFER_HEIGHT: usize = 128;
|
|
|
|
fn main() {
|
|
let event_loop = EventLoop::new();
|
|
let window = WindowBuilder::new().build(&event_loop).unwrap();
|
|
|
|
#[cfg(target_arch = "wasm32")]
|
|
{
|
|
use winit::platform::web::WindowExtWebSys;
|
|
|
|
web_sys::window()
|
|
.unwrap()
|
|
.document()
|
|
.unwrap()
|
|
.body()
|
|
.unwrap()
|
|
.append_child(&window.canvas())
|
|
.unwrap();
|
|
}
|
|
|
|
let context = unsafe { softbuffer::Context::new(&window) }.unwrap();
|
|
let mut surface = unsafe { softbuffer::Surface::new(&context, &window) }.unwrap();
|
|
|
|
event_loop.run(move |event, _, control_flow| {
|
|
*control_flow = ControlFlow::Wait;
|
|
|
|
match event {
|
|
Event::RedrawRequested(window_id) if window_id == window.id() => {
|
|
let buffer = (0..(BUFFER_WIDTH * BUFFER_HEIGHT))
|
|
.map(|index| {
|
|
let y = index / BUFFER_WIDTH;
|
|
let x = index % BUFFER_WIDTH;
|
|
let red = x % 255;
|
|
let green = y % 255;
|
|
let blue = (x * y) % 255;
|
|
|
|
let color = blue | (green << 8) | (red << 16);
|
|
|
|
color as u32
|
|
})
|
|
.collect::<Vec<_>>();
|
|
|
|
surface.set_buffer(&buffer, BUFFER_WIDTH as u16, BUFFER_HEIGHT as u16);
|
|
}
|
|
Event::WindowEvent {
|
|
event: WindowEvent::CloseRequested,
|
|
window_id,
|
|
} if window_id == window.id() => {
|
|
*control_flow = ControlFlow::Exit;
|
|
}
|
|
_ => {}
|
|
}
|
|
});
|
|
}
|