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Owned pixel buffer for no-copy presentation

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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>
This commit is contained in:
Ian Douglas Scott 2023-04-06 00:30:59 -07:00 • committed by GitHub
parent e5d546ff9e
commit a09e4cf679
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GPG key ID: 4AEE18F83AFDEB23
19 changed files with 1176 additions and 438 deletions
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31
examples/fruit.rs
View file

@ -1,4 +1,5 @@
use image::GenericImageView;
use std::num::NonZeroU32;
use winit::event::{Event, WindowEvent};
use winit::event_loop::{ControlFlow, EventLoop};
use winit::window::WindowBuilder;
@ -6,16 +7,6 @@ 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 buffer = fruit
.pixels()
.map(|(_x, _y, pixel)| {
let red = pixel.0[0] as u32;
let green = pixel.0[1] as u32;
let blue = pixel.0[2] as u32;
blue | (green << 8) | (red << 16)
})
.collect::<Vec<_>>();
let event_loop = EventLoop::new();
let window = WindowBuilder::new()
@ -45,7 +36,25 @@ fn main() {
match event {
Event::RedrawRequested(window_id) if window_id == window.id() => {
surface.set_buffer(&buffer, fruit.width() as u16, fruit.height() as u16);
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,