kossLAN/wry
1
0
Fork 0
forked from wry/wry
Code Pull requests Activity

metal: make post_commit_margin configurable

Browse source
This commit is contained in:
Julian Orth 2024-09-14 13:56:22 +02:00
parent 76b0f2f734
commit 02ece60909
24 changed files with 224 additions and 55 deletions
Download patch file Download diff file Expand all files Collapse all files

27
src/backends/metal/present.rs
View file

@ -23,11 +23,7 @@ use {
},
},
},
std::{
env,
rc::{Rc, Weak},
sync::LazyLock,
},
std::rc::{Rc, Weak},
uapi::c,
};
@ -85,19 +81,9 @@ enum CursorProgramming {
}
pub const DEFAULT_PRE_COMMIT_MARGIN: u64 = 16_000_000; // 16ms
pub const MIN_POST_COMMIT_MARGIN: u64 = 1_500_000; // 1.5ms
pub const MAX_POST_COMMIT_MARGIN: u64 = 16_000_000; // 16ms
pub const DEFAULT_POST_COMMIT_MARGIN: u64 = MIN_POST_COMMIT_MARGIN;
pub const DEFAULT_POST_COMMIT_MARGIN: u64 = 1_500_000; // 1.5ms;
pub const POST_COMMIT_MARGIN_DELTA: u64 = 500_000; // 500us
static NO_FRAME_SCHEDULING: LazyLock<bool> = LazyLock::new(|| {
let res = env::var("JAY_NO_FRAME_SCHEDULING").ok().as_deref() == Some("1");
if res {
log::warn!("Frame scheduling is disabled.");
}
res
});
impl MetalConnector {
pub fn schedule_present(&self) {
self.present_trigger.trigger();
@ -113,10 +99,13 @@ impl MetalConnector {
}
let mut expected_sequence = self.sequence.get() + 1;
let mut start = Time::now_unchecked();
let use_frame_scheduling = !self.try_async_flip() && !*NO_FRAME_SCHEDULING;
let use_frame_scheduling = !self.try_async_flip();
if use_frame_scheduling {
let margin = self.pre_commit_margin.get() + self.post_commit_margin.get();
let next_present = self.next_flip_nsec.get().saturating_sub(margin);
let next_present = self
.next_flip_nsec
.get()
.saturating_sub(self.pre_commit_margin.get())
.saturating_sub(self.post_commit_margin.get());
if start.nsec() < next_present {
self.state.ring.timeout(next_present).await.unwrap();
start = Time::now_unchecked();