mirror of
https://github.com/servo/servo
synced 2026-05-15 11:26:50 +02:00
8beef6c21f
Adds epoch to each WR image op command that is sent to compositor. The renderer now has a `FrameDelayer` data structure that is responsible for tracking when a frame is ready to be displayed. When asking canvases to update their rendering, they are given an optional `Epoch` which denotes the `Document`'s canvas epoch. When all image updates for that `Epoch` are seen in the renderer, the frame can be displayed. Testing: Existing WPT tests Fixes: #35733 Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com> Signed-off-by: Martin Robinson <mrobinson@igalia.com> Co-authored-by: Martin Robinson <mrobinson@igalia.com>
53 lines
1.4 KiB
Rust
53 lines
1.4 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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#![deny(unsafe_code)]
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//! A crate to hold very common types in Servo.
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//!
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//! You should almost never need to add a data type to this crate. Instead look for
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//! a more shared crate that has fewer dependents.
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pub mod cross_process_instant;
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pub mod generic_channel;
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pub mod id;
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pub mod print_tree;
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pub mod text;
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mod unicode_block;
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use malloc_size_of_derive::MallocSizeOf;
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use serde::{Deserialize, Serialize};
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use webrender_api::Epoch as WebRenderEpoch;
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/// A struct for denoting the age of messages; prevents race conditions.
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#[derive(
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Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize, MallocSizeOf,
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)]
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pub struct Epoch(pub u32);
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impl Epoch {
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pub fn next(&mut self) {
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self.0 += 1;
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}
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}
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impl From<Epoch> for WebRenderEpoch {
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fn from(val: Epoch) -> Self {
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WebRenderEpoch(val.0)
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}
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}
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pub trait WebRenderEpochToU16 {
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fn as_u16(&self) -> u16;
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}
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impl WebRenderEpochToU16 for WebRenderEpoch {
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/// The value of this [`Epoch`] as a u16 value. Note that if this Epoch's
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/// value is more than u16::MAX, then the return value will be modulo
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/// u16::MAX.
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fn as_u16(&self) -> u16 {
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(self.0 % u16::MAX as u32) as u16
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}
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}
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