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.
66 lines
2.1 KiB
Rust
66 lines
2.1 KiB
Rust
use winit::event::{Event, WindowEvent};
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use winit::event_loop::{ControlFlow, EventLoop};
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use winit::window::WindowBuilder;
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fn main() {
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let event_loop = EventLoop::new();
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let window = WindowBuilder::new().build(&event_loop).unwrap();
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#[cfg(target_arch = "wasm32")]
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{
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use winit::platform::web::WindowExtWebSys;
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web_sys::window()
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.unwrap()
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.document()
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.unwrap()
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.body()
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.unwrap()
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.append_child(&window.canvas())
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.unwrap();
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}
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let context = unsafe { softbuffer::Context::new(&window) }.unwrap();
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let mut surface = unsafe { softbuffer::Surface::new(&context, &window) }.unwrap();
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event_loop.run(move |event, _, control_flow| {
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*control_flow = ControlFlow::Wait;
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match event {
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Event::RedrawRequested(window_id) if window_id == window.id() => {
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let (width, height) = {
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let size = window.inner_size();
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(size.width, size.height)
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};
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let buffer = (0..((width * height) as usize))
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.map(|index| {
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let y = index / (width as usize);
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let x = index % (width as usize);
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let red = x % 255;
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let green = y % 255;
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let blue = (x * y) % 255;
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let color = blue | (green << 8) | (red << 16);
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color as u32
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})
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.collect::<Vec<_>>();
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surface.set_buffer(&buffer, width as u16, height as u16);
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}
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Event::WindowEvent {
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event: WindowEvent::CloseRequested,
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window_id,
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} if window_id == window.id() => {
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*control_flow = ControlFlow::Exit;
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}
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Event::WindowEvent {
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event: WindowEvent::Resized(_),
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window_id,
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} if window_id == window.id() => {
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window.request_redraw();
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}
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_ => {}
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}
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});
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}
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