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compositor: Make PipelineDetails and pending paint metrics per-WebView (#35701)

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This is one of the first big steps toward making the compositor work
per-WebView. It moves the collection of pipelines into the per-WebView
data structure in the compositor as well as the pending paint metrics.

This means that more messages need to carry information about the
WebView they apply to. Note that there are still a few places that we
need to map from `PipelineId` to `WebViewId`, so this also includes a
shared mapping which tracks this. The mapping can be removed once event
handling is fully per-WebView.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Delan Azabani <dazabani@igalia.com>
This commit is contained in:
Martin Robinson 2025-03-04 03:31:23 +01:00 • committed by GitHub
parent 0d0bcdeb4d
commit f3e6e4f04e
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13 changed files with 537 additions and 373 deletions
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14
components/shared/compositing/lib.rs
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@ -9,7 +9,7 @@ mod constellation_msg;
use std::fmt::{Debug, Error, Formatter};
use base::Epoch;
use base::id::{PipelineId, TopLevelBrowsingContextId};
use base::id::{PipelineId, TopLevelBrowsingContextId, WebViewId};
pub use constellation_msg::ConstellationMsg;
use crossbeam_channel::{Receiver, Sender};
use embedder_traits::{EventLoopWaker, MouseButton, MouseButtonAction};
@ -59,7 +59,7 @@ impl CompositorReceiver {
/// Messages from (or via) the constellation thread to the compositor.
pub enum CompositorMsg {
/// Alerts the compositor that the given pipeline has changed whether it is running animations.
ChangeRunningAnimationsState(PipelineId, AnimationState),
ChangeRunningAnimationsState(WebViewId, PipelineId, AnimationState),
/// Create or update a webview, given its frame tree.
CreateOrUpdateWebView(SendableFrameTree),
/// Remove a webview.
@ -71,7 +71,7 @@ pub enum CompositorMsg {
/// A reply to the compositor asking if the output image is stable.
IsReadyToSaveImageReply(bool),
/// Set whether to use less resources by stopping animations.
SetThrottled(PipelineId, bool),
SetThrottled(WebViewId, PipelineId, bool),
/// WebRender has produced a new frame. This message informs the compositor that
/// the frame is ready. It contains a bool to indicate if it needs to composite and the
/// `DocumentId` of the new frame.
@ -81,11 +81,11 @@ pub enum CompositorMsg {
// when it shuts down a pipeline, to the compositor; when the compositor
// sends a reply on the IpcSender, the constellation knows it's safe to
// tear down the other threads associated with this pipeline.
PipelineExited(PipelineId, IpcSender<()>),
PipelineExited(WebViewId, PipelineId, IpcSender<()>),
/// Indicates to the compositor that it needs to record the time when the frame with
/// the given ID (epoch) is painted and report it to the layout of the given
/// pipeline ID.
PendingPaintMetric(PipelineId, Epoch),
/// WebViewId and PipelienId.
PendingPaintMetric(WebViewId, PipelineId, Epoch),
/// The load of a page has completed
LoadComplete(TopLevelBrowsingContextId),
/// WebDriver mouse button event
@ -114,7 +114,7 @@ pub struct CompositionPipeline {
impl Debug for CompositorMsg {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
match *self {
CompositorMsg::ChangeRunningAnimationsState(_, state) => {
CompositorMsg::ChangeRunningAnimationsState(_, _, state) => {
write!(f, "ChangeRunningAnimationsState({:?})", state)
},
CompositorMsg::CreateOrUpdateWebView(..) => write!(f, "CreateOrUpdateWebView"),