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make refresh rate more regular

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This commit is contained in:
Wez Furlong 2018-02-22 14:34:57 -08:00
parent c8f3add5cc
commit 6232ebf1c6
1 changed files with 22 additions and 13 deletions
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35
src/main.rs
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@ -38,7 +38,7 @@ use std::os::unix::io::AsRawFd;
use std::process::Command;
use std::str;
use std::thread;
use std::time::Duration;
use std::time::{Duration, Instant};
mod config;
@ -117,26 +117,35 @@ fn run_glium(
PollOpt::edge(),
).expect("failed to register pty");
let mut events = Events::with_capacity(8);
let mut last_paint = Instant::now();
let refresh = Duration::from_millis(50);
loop {
match poll.poll(&mut events, Some(Duration::from_millis(50))) {
Ok(n) if n > 0 => for event in &events {
let now = Instant::now();
let diff = now - last_paint;
let period = if diff >= refresh {
// Tick and wakeup the gui thread to ask it to render
// if needed. Without this we'd only repaint when
// the window system decides that we were damaged.
// We don't want to paint after every state change
// as that would be too frequent.
wakeup
.send(WakeupMsg::Paint)
.expect("failed to wakeup gui thread");
last_paint = now;
refresh
} else {
refresh - diff
};
match poll.poll(&mut events, Some(period)) {
Ok(_) => for event in &events {
if event.token() == Token(0) && event.readiness().is_readable() {
wakeup
.send(WakeupMsg::PtyReadable)
.expect("failed to wakeup gui thread");
}
},
Ok(_) => {
// Tick and wakeup the gui thread to ask it to render
// if needed. Without this we'd only repaint when
// the window system decides that we were damaged.
// We don't want to paint after every state change
// as that would be too frequent.
wakeup
.send(WakeupMsg::Paint)
.expect("failed to wakeup gui thread");
}
_ => {}
}
}