a09e4cf679
This is based on the API that will be used for no-copy presentation. But wraps it in `set_buffer`. This also fixes the Wayland buffer code to set `self.width` and `self.height` on resize, and set the length of the shared memory file when the buffer is created. Co-authored-by: jtnunley <jtnunley01@gmail.com>
68 lines
2.2 KiB
Rust
68 lines
2.2 KiB
Rust
use image::GenericImageView;
|
|
use std::num::NonZeroU32;
|
|
use winit::event::{Event, WindowEvent};
|
|
use winit::event_loop::{ControlFlow, EventLoop};
|
|
use winit::window::WindowBuilder;
|
|
|
|
fn main() {
|
|
//see fruit.jpg.license for the license of fruit.jpg
|
|
let fruit = image::load_from_memory(include_bytes!("fruit.jpg")).unwrap();
|
|
|
|
let event_loop = EventLoop::new();
|
|
let window = WindowBuilder::new()
|
|
.with_inner_size(winit::dpi::PhysicalSize::new(fruit.width(), fruit.height()))
|
|
.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() => {
|
|
surface
|
|
.resize(
|
|
NonZeroU32::new(fruit.width()).unwrap(),
|
|
NonZeroU32::new(fruit.height()).unwrap(),
|
|
)
|
|
.unwrap();
|
|
|
|
let mut buffer = surface.buffer_mut().unwrap();
|
|
let width = fruit.width() as usize;
|
|
for (x, y, pixel) in fruit.pixels() {
|
|
let red = pixel.0[0] as u32;
|
|
let green = pixel.0[1] as u32;
|
|
let blue = pixel.0[2] as u32;
|
|
|
|
let color = blue | (green << 8) | (red << 16);
|
|
buffer[y as usize * width + x as usize] = color;
|
|
}
|
|
|
|
buffer.present().unwrap();
|
|
}
|
|
Event::WindowEvent {
|
|
event: WindowEvent::CloseRequested,
|
|
window_id,
|
|
} if window_id == window.id() => {
|
|
*control_flow = ControlFlow::Exit;
|
|
}
|
|
_ => {}
|
|
}
|
|
});
|
|
}
|