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Use FIFO swapchain in examples

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This commit is contained in:
Connor Fitzgerald 2022-06-20 00:38:33 -04:00 committed by Jim Blandy
parent f27a9788fd
commit 7df4fd1cd4
1 changed files with 3 additions and 25 deletions
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28
wgpu/examples/framework.rs
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@ -2,7 +2,7 @@ use std::future::Future;
#[cfg(target_arch = "wasm32")]
use std::str::FromStr;
#[cfg(not(target_arch = "wasm32"))]
use std::time::{Duration, Instant};
use std::time::Instant;
#[cfg(target_arch = "wasm32")]
use web_sys::{ImageBitmapRenderingContext, OffscreenCanvas};
use winit::{
@ -276,15 +276,13 @@ fn start<E: Example>(
.unwrap(),
width: size.width,
height: size.height,
present_mode: wgpu::PresentMode::Mailbox,
present_mode: wgpu::PresentMode::Fifo,
};
surface.configure(&device, &config);
log::info!("Initializing the example...");
let mut example = E::init(&config, &adapter, &device, &queue);
#[cfg(not(target_arch = "wasm32"))]
let mut last_update_inst = Instant::now();
#[cfg(not(target_arch = "wasm32"))]
let mut last_frame_inst = Instant::now();
#[cfg(not(target_arch = "wasm32"))]
@ -301,28 +299,8 @@ fn start<E: Example>(
match event {
event::Event::RedrawEventsCleared => {
#[cfg(not(target_arch = "wasm32"))]
{
// Clamp to some max framerate to avoid busy-looping too much
// (we might be in wgpu::PresentMode::Mailbox, thus discarding superfluous frames)
//
// winit has window.current_monitor().video_modes() but that is a list of all full screen video modes.
// So without extra dependencies it's a bit tricky to get the max refresh rate we can run the window on.
// Therefore we just go with 60fps - sorry 120hz+ folks!
let target_frametime = Duration::from_secs_f64(1.0 / 60.0);
let time_since_last_frame = last_update_inst.elapsed();
if time_since_last_frame >= target_frametime {
window.request_redraw();
last_update_inst = Instant::now();
} else {
*control_flow = ControlFlow::WaitUntil(
Instant::now() + target_frametime - time_since_last_frame,
);
}
spawner.run_until_stalled();
spawner.run_until_stalled();
}
#[cfg(target_arch = "wasm32")]
window.request_redraw();
}
event::Event::WindowEvent {