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fa5ad1c6b4
Split out layered child stacking contexts in display lists This patch is in preparation for more dynamic layerization of the pieces of display lists. It also prevents having to sort the children by z-index multiple times. <!-- Reviewable:start --> [<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/servo/servo/7392) <!-- Reviewable:end -->
674 lines
28 KiB
Rust
674 lines
28 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 http://mozilla.org/MPL/2.0/. */
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//! The task that handles all painting.
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use display_list::{self, StackingContext};
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use font_cache_task::FontCacheTask;
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use font_context::FontContext;
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use paint_context::PaintContext;
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use azure::AzFloat;
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use azure::azure_hl::{SurfaceFormat, Color, DrawTarget, BackendType};
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use canvas_traits::CanvasMsg;
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use euclid::Matrix4;
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use euclid::point::Point2D;
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use euclid::rect::Rect;
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use euclid::size::Size2D;
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use ipc_channel::ipc::IpcSender;
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use layers::layers::{BufferRequest, LayerBuffer, LayerBufferSet};
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use layers::platform::surface::{NativeDisplay, NativeSurface};
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use msg::compositor_msg::{Epoch, FrameTreeId, LayerId, LayerKind};
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use msg::compositor_msg::{LayerProperties, PaintListener, ScrollPolicy};
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use msg::constellation_msg::Msg as ConstellationMsg;
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use msg::constellation_msg::PipelineExitType;
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use msg::constellation_msg::{ConstellationChan, Failure, PipelineId};
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use profile_traits::mem::{self, ReportsChan};
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use profile_traits::time::{self, profile};
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use rand::{self, Rng};
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use skia::gl_context::GLContext;
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use std::borrow::ToOwned;
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use std::collections::HashMap;
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use std::mem as std_mem;
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use std::sync::Arc;
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use std::sync::mpsc::{Receiver, Select, Sender, channel};
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use url::Url;
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use util::geometry::{Au, ZERO_POINT};
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use util::opts;
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use util::task::spawn_named;
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use util::task::spawn_named_with_send_on_failure;
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use util::task_state;
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/// Information about a hardware graphics layer that layout sends to the painting task.
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#[derive(Clone, Deserialize, Serialize)]
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pub struct PaintLayer {
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/// A per-pipeline ID describing this layer that should be stable across reflows.
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pub id: LayerId,
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/// The color of the background in this layer. Used for unpainted content.
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pub background_color: Color,
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/// The scrolling policy of this layer.
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pub scroll_policy: ScrollPolicy,
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}
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impl PaintLayer {
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/// Creates a new `PaintLayer`.
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pub fn new(id: LayerId, background_color: Color, scroll_policy: ScrollPolicy) -> PaintLayer {
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PaintLayer {
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id: id,
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background_color: background_color,
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scroll_policy: scroll_policy,
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}
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}
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}
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pub struct PaintRequest {
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pub buffer_requests: Vec<BufferRequest>,
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pub scale: f32,
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pub layer_id: LayerId,
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pub epoch: Epoch,
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pub layer_kind: LayerKind,
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}
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pub enum Msg {
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FromLayout(LayoutToPaintMsg),
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FromChrome(ChromeToPaintMsg),
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}
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#[derive(Deserialize, Serialize)]
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pub enum LayoutToPaintMsg {
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PaintInit(Epoch, Arc<StackingContext>),
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CanvasLayer(LayerId, IpcSender<CanvasMsg>),
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Exit(Option<IpcSender<()>>, PipelineExitType),
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}
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pub enum ChromeToPaintMsg {
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Paint(Vec<PaintRequest>, FrameTreeId),
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PaintPermissionGranted,
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PaintPermissionRevoked,
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CollectReports(ReportsChan),
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Exit(Option<IpcSender<()>>, PipelineExitType),
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}
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pub struct PaintTask<C> {
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id: PipelineId,
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_url: Url,
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layout_to_paint_port: Receiver<LayoutToPaintMsg>,
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chrome_to_paint_port: Receiver<ChromeToPaintMsg>,
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compositor: C,
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constellation_chan: ConstellationChan,
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/// A channel to the time profiler.
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time_profiler_chan: time::ProfilerChan,
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/// The root stacking context sent to us by the layout thread.
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root_stacking_context: Option<Arc<StackingContext>>,
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/// Permission to send paint messages to the compositor
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paint_permission: bool,
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/// The current epoch counter is passed by the layout task
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current_epoch: Option<Epoch>,
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/// Communication handles to each of the worker threads.
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worker_threads: Vec<WorkerThreadProxy>,
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/// A map to track the canvas specific layers
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canvas_map: HashMap<LayerId, IpcSender<CanvasMsg>>,
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}
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// If we implement this as a function, we get borrowck errors from borrowing
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// the whole PaintTask struct.
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macro_rules! native_display(
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($task:expr) => (
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$task.native_display.as_ref().expect("Need a graphics context to do painting")
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)
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);
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impl<C> PaintTask<C> where C: PaintListener + Send + 'static {
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pub fn create(id: PipelineId,
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url: Url,
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chrome_to_paint_chan: Sender<ChromeToPaintMsg>,
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layout_to_paint_port: Receiver<LayoutToPaintMsg>,
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chrome_to_paint_port: Receiver<ChromeToPaintMsg>,
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compositor: C,
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constellation_chan: ConstellationChan,
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font_cache_task: FontCacheTask,
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failure_msg: Failure,
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time_profiler_chan: time::ProfilerChan,
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mem_profiler_chan: mem::ProfilerChan,
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shutdown_chan: Sender<()>) {
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let ConstellationChan(c) = constellation_chan.clone();
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spawn_named_with_send_on_failure(format!("PaintTask {:?}", id), task_state::PAINT, move || {
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{
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// Ensures that the paint task and graphics context are destroyed before the
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// shutdown message.
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let mut compositor = compositor;
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let native_display = compositor.native_display().map(
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|display| display);
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let worker_threads = WorkerThreadProxy::spawn(native_display.clone(),
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font_cache_task,
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time_profiler_chan.clone());
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// FIXME: rust/#5967
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let mut paint_task = PaintTask {
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id: id,
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_url: url,
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layout_to_paint_port: layout_to_paint_port,
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chrome_to_paint_port: chrome_to_paint_port,
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compositor: compositor,
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constellation_chan: constellation_chan,
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time_profiler_chan: time_profiler_chan,
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root_stacking_context: None,
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paint_permission: false,
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current_epoch: None,
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worker_threads: worker_threads,
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canvas_map: HashMap::new()
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};
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let reporter_name = format!("paint-reporter-{}", id.0);
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mem_profiler_chan.run_with_memory_reporting(|| {
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paint_task.start();
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}, reporter_name, chrome_to_paint_chan, ChromeToPaintMsg::CollectReports);
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// Tell all the worker threads to shut down.
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for worker_thread in &mut paint_task.worker_threads {
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worker_thread.exit()
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}
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}
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debug!("paint_task: shutdown_chan send");
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shutdown_chan.send(()).unwrap();
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}, ConstellationMsg::Failure(failure_msg), c);
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}
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fn start(&mut self) {
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debug!("PaintTask: beginning painting loop");
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loop {
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let message = {
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let select = Select::new();
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let mut layout_to_paint_handle = select.handle(&self.layout_to_paint_port);
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let mut chrome_to_paint_handle = select.handle(&self.chrome_to_paint_port);
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unsafe {
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layout_to_paint_handle.add();
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chrome_to_paint_handle.add();
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}
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let result = select.wait();
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if result == layout_to_paint_handle.id() {
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Msg::FromLayout(self.layout_to_paint_port.recv().unwrap())
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} else if result == chrome_to_paint_handle.id() {
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Msg::FromChrome(self.chrome_to_paint_port.recv().unwrap())
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} else {
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panic!("unexpected select result")
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}
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};
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match message {
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Msg::FromLayout(LayoutToPaintMsg::PaintInit(epoch, stacking_context)) => {
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self.current_epoch = Some(epoch);
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self.root_stacking_context = Some(stacking_context.clone());
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if !self.paint_permission {
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debug!("PaintTask: paint ready msg");
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let ConstellationChan(ref mut c) = self.constellation_chan;
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c.send(ConstellationMsg::PainterReady(self.id)).unwrap();
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continue;
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}
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self.initialize_layers();
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}
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// Inserts a new canvas renderer to the layer map
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Msg::FromLayout(LayoutToPaintMsg::CanvasLayer(layer_id, canvas_renderer)) => {
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debug!("Renderer received for canvas with layer {:?}", layer_id);
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self.canvas_map.insert(layer_id, canvas_renderer);
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}
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Msg::FromChrome(ChromeToPaintMsg::Paint(requests, frame_tree_id)) => {
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if !self.paint_permission {
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debug!("PaintTask: paint ready msg");
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let ConstellationChan(ref mut c) = self.constellation_chan;
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c.send(ConstellationMsg::PainterReady(self.id)).unwrap();
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continue;
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}
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let mut replies = Vec::new();
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for PaintRequest { buffer_requests, scale, layer_id, epoch, layer_kind }
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in requests {
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if self.current_epoch == Some(epoch) {
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self.paint(&mut replies, buffer_requests, scale, layer_id, layer_kind);
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} else {
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debug!("PaintTask: Ignoring requests with epoch mismatch: {:?} != {:?}",
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self.current_epoch,
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epoch);
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self.compositor.ignore_buffer_requests(buffer_requests);
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}
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}
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debug!("PaintTask: returning surfaces");
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self.compositor.assign_painted_buffers(self.id,
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self.current_epoch.unwrap(),
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replies,
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frame_tree_id);
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}
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Msg::FromChrome(ChromeToPaintMsg::PaintPermissionGranted) => {
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self.paint_permission = true;
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if self.root_stacking_context.is_some() {
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self.initialize_layers();
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}
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}
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Msg::FromChrome(ChromeToPaintMsg::PaintPermissionRevoked) => {
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self.paint_permission = false;
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}
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Msg::FromChrome(ChromeToPaintMsg::CollectReports(ref channel)) => {
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// FIXME(njn): should eventually measure the paint task.
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channel.send(Vec::new())
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}
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Msg::FromLayout(LayoutToPaintMsg::Exit(ref response_channel, _)) |
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Msg::FromChrome(ChromeToPaintMsg::Exit(ref response_channel, _)) => {
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// Ask the compositor to remove any layers it is holding for this paint task.
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// FIXME(mrobinson): This can probably move back to the constellation now.
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self.compositor.notify_paint_task_exiting(self.id);
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debug!("PaintTask: Exiting.");
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response_channel.as_ref().map(|channel| channel.send(()));
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break;
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}
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}
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}
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}
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/// Paints one layer and places the painted tiles in `replies`.
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fn paint(&mut self,
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replies: &mut Vec<(LayerId, Box<LayerBufferSet>)>,
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mut tiles: Vec<BufferRequest>,
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scale: f32,
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layer_id: LayerId,
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layer_kind: LayerKind) {
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time::profile(time::ProfilerCategory::Painting, None, self.time_profiler_chan.clone(), || {
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// Bail out if there is no appropriate stacking context.
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let stacking_context = if let Some(ref stacking_context) = self.root_stacking_context {
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match display_list::find_stacking_context_with_layer_id(stacking_context,
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layer_id) {
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Some(stacking_context) => stacking_context,
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None => return,
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}
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} else {
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return
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};
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// Divide up the layer into tiles and distribute them to workers via a simple round-
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// robin strategy.
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let tiles = std_mem::replace(&mut tiles, Vec::new());
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let tile_count = tiles.len();
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for (i, tile) in tiles.into_iter().enumerate() {
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let thread_id = i % self.worker_threads.len();
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self.worker_threads[thread_id].paint_tile(thread_id,
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tile,
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stacking_context.clone(),
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scale,
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layer_kind);
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}
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let new_buffers = (0..tile_count).map(|i| {
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let thread_id = i % self.worker_threads.len();
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self.worker_threads[thread_id].get_painted_tile_buffer()
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}).collect();
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let layer_buffer_set = box LayerBufferSet {
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buffers: new_buffers,
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};
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replies.push((layer_id, layer_buffer_set));
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})
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}
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fn initialize_layers(&mut self) {
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let root_stacking_context = match self.root_stacking_context {
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None => return,
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Some(ref root_stacking_context) => root_stacking_context,
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};
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let mut properties = Vec::new();
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build(&mut properties,
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&**root_stacking_context,
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&ZERO_POINT,
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&Matrix4::identity(),
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&Matrix4::identity(),
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None);
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self.compositor.initialize_layers_for_pipeline(self.id,
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properties,
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self.current_epoch.unwrap());
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fn build(properties: &mut Vec<LayerProperties>,
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stacking_context: &StackingContext,
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page_position: &Point2D<Au>,
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transform: &Matrix4,
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perspective: &Matrix4,
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parent_id: Option<LayerId>) {
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let transform = transform.mul(&stacking_context.transform);
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let perspective = perspective.mul(&stacking_context.perspective);
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let (next_parent_id, page_position, transform, perspective) =
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match stacking_context.layer {
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Some(ref paint_layer) => {
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let overflow_size =
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Size2D::new(stacking_context.overflow.size.width.to_nearest_px() as f32,
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stacking_context.overflow.size.height.to_nearest_px() as f32);
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let establishes_3d_context = stacking_context.establishes_3d_context;
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let scrolls_overflow_area = stacking_context.scrolls_overflow_area;
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// Layers start at the top left of their overflow rect, as far as the info
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// we give to the compositor is concerned.
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let overflow_relative_page_position = *page_position +
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stacking_context.bounds.origin +
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stacking_context.overflow.origin;
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let layer_position = Rect::new(
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Point2D::new(overflow_relative_page_position.x.to_nearest_px() as f32,
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overflow_relative_page_position.y.to_nearest_px() as f32),
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overflow_size);
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properties.push(LayerProperties {
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id: paint_layer.id,
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parent_id: parent_id,
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rect: layer_position,
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background_color: paint_layer.background_color,
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scroll_policy: paint_layer.scroll_policy,
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transform: transform,
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perspective: perspective,
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establishes_3d_context: establishes_3d_context,
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scrolls_overflow_area: scrolls_overflow_area,
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});
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// When there is a new layer, the transforms and origin
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// are handled by the compositor.
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(Some(paint_layer.id),
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-stacking_context.overflow.origin,
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Matrix4::identity(),
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Matrix4::identity())
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}
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None => {
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(parent_id,
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stacking_context.bounds.origin + *page_position,
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transform,
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perspective)
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}
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};
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for kid in stacking_context.display_list.children.iter() {
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build(properties, &**kid, &page_position, &transform, &perspective, next_parent_id)
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}
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for kid in stacking_context.display_list.layered_children.iter() {
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build(properties, &**kid, &page_position, &transform, &perspective, next_parent_id)
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}
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}
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}
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}
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struct WorkerThreadProxy {
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sender: Sender<MsgToWorkerThread>,
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receiver: Receiver<MsgFromWorkerThread>,
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}
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impl WorkerThreadProxy {
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fn spawn(native_display: Option<NativeDisplay>,
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font_cache_task: FontCacheTask,
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time_profiler_chan: time::ProfilerChan)
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-> Vec<WorkerThreadProxy> {
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let thread_count = if opts::get().gpu_painting {
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1
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} else {
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opts::get().paint_threads
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};
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(0..thread_count).map(|_| {
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let (from_worker_sender, from_worker_receiver) = channel();
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let (to_worker_sender, to_worker_receiver) = channel();
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let font_cache_task = font_cache_task.clone();
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let time_profiler_chan = time_profiler_chan.clone();
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spawn_named("PaintWorker".to_owned(), move || {
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let mut worker_thread = WorkerThread::new(from_worker_sender,
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to_worker_receiver,
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native_display,
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font_cache_task,
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time_profiler_chan);
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worker_thread.main();
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});
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WorkerThreadProxy {
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receiver: from_worker_receiver,
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sender: to_worker_sender,
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}
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}).collect()
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}
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fn paint_tile(&mut self,
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thread_id: usize,
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tile: BufferRequest,
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stacking_context: Arc<StackingContext>,
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scale: f32,
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layer_kind: LayerKind) {
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let msg = MsgToWorkerThread::PaintTile(thread_id,
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tile,
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stacking_context,
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scale,
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layer_kind);
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self.sender.send(msg).unwrap()
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}
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fn get_painted_tile_buffer(&mut self) -> Box<LayerBuffer> {
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match self.receiver.recv().unwrap() {
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MsgFromWorkerThread::PaintedTile(layer_buffer) => layer_buffer,
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}
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}
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fn exit(&mut self) {
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self.sender.send(MsgToWorkerThread::Exit).unwrap()
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}
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}
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struct WorkerThread {
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sender: Sender<MsgFromWorkerThread>,
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receiver: Receiver<MsgToWorkerThread>,
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native_display: Option<NativeDisplay>,
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font_context: Box<FontContext>,
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time_profiler_sender: time::ProfilerChan,
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gl_context: Option<Arc<GLContext>>,
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}
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fn create_gl_context(native_display: Option<NativeDisplay>) -> Option<Arc<GLContext>> {
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if !opts::get().gpu_painting {
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return None;
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}
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match native_display {
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Some(display) => {
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let tile_size = opts::get().tile_size as i32;
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GLContext::new(display.platform_display_data(), Size2D::new(tile_size, tile_size))
|
|
}
|
|
None => {
|
|
warn!("Could not create GLContext, falling back to CPU rasterization");
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
impl WorkerThread {
|
|
fn new(sender: Sender<MsgFromWorkerThread>,
|
|
receiver: Receiver<MsgToWorkerThread>,
|
|
native_display: Option<NativeDisplay>,
|
|
font_cache_task: FontCacheTask,
|
|
time_profiler_sender: time::ProfilerChan)
|
|
-> WorkerThread {
|
|
let gl_context = create_gl_context(native_display);
|
|
WorkerThread {
|
|
sender: sender,
|
|
receiver: receiver,
|
|
native_display: native_display,
|
|
font_context: box FontContext::new(font_cache_task.clone()),
|
|
time_profiler_sender: time_profiler_sender,
|
|
gl_context: gl_context,
|
|
}
|
|
}
|
|
|
|
fn main(&mut self) {
|
|
loop {
|
|
match self.receiver.recv().unwrap() {
|
|
MsgToWorkerThread::Exit => break,
|
|
MsgToWorkerThread::PaintTile(thread_id, tile, stacking_context, scale, layer_kind) => {
|
|
let buffer = self.optimize_and_paint_tile(thread_id,
|
|
tile,
|
|
stacking_context,
|
|
scale,
|
|
layer_kind);
|
|
self.sender.send(MsgFromWorkerThread::PaintedTile(buffer)).unwrap()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn create_draw_target_for_layer_buffer(&self,
|
|
size: Size2D<i32>,
|
|
layer_buffer: &mut Box<LayerBuffer>)
|
|
-> DrawTarget {
|
|
match self.gl_context {
|
|
Some(ref gl_context) => {
|
|
match layer_buffer.native_surface.gl_rasterization_context(gl_context.clone()) {
|
|
Some(rasterization_context) => {
|
|
DrawTarget::new_with_gl_rasterization_context(rasterization_context,
|
|
SurfaceFormat::B8G8R8A8)
|
|
}
|
|
None => panic!("Could not create GLRasterizationContext for LayerBuffer"),
|
|
}
|
|
},
|
|
None => {
|
|
// A missing GLContext means we want CPU rasterization.
|
|
DrawTarget::new(BackendType::Skia, size, SurfaceFormat::B8G8R8A8)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn optimize_and_paint_tile(&mut self,
|
|
thread_id: usize,
|
|
mut tile: BufferRequest,
|
|
stacking_context: Arc<StackingContext>,
|
|
scale: f32,
|
|
layer_kind: LayerKind)
|
|
-> Box<LayerBuffer> {
|
|
let size = Size2D::new(tile.screen_rect.size.width as i32,
|
|
tile.screen_rect.size.height as i32);
|
|
let mut buffer = self.create_layer_buffer(&mut tile, scale);
|
|
let draw_target = self.create_draw_target_for_layer_buffer(size, &mut buffer);
|
|
|
|
{
|
|
// Build the paint context.
|
|
let mut paint_context = PaintContext {
|
|
draw_target: draw_target.clone(),
|
|
font_context: &mut self.font_context,
|
|
page_rect: tile.page_rect,
|
|
screen_rect: tile.screen_rect,
|
|
clip_rect: None,
|
|
transient_clip: None,
|
|
layer_kind: layer_kind,
|
|
};
|
|
|
|
// Apply a translation to start at the boundaries of the stacking context, since the
|
|
// layer's origin starts at its overflow rect's origin.
|
|
let tile_bounds = tile.page_rect.translate(
|
|
&Point2D::new(stacking_context.overflow.origin.x.to_f32_px(),
|
|
stacking_context.overflow.origin.y.to_f32_px()));
|
|
|
|
// Apply the translation to paint the tile we want.
|
|
let matrix = Matrix4::identity();
|
|
let matrix = matrix.scale(scale as AzFloat, scale as AzFloat, 1.0);
|
|
let matrix = matrix.translate(-tile_bounds.origin.x as AzFloat,
|
|
-tile_bounds.origin.y as AzFloat,
|
|
0.0);
|
|
|
|
// Clear the buffer.
|
|
paint_context.clear();
|
|
|
|
// Draw the display list.
|
|
time::profile(time::ProfilerCategory::PaintingPerTile,
|
|
None,
|
|
self.time_profiler_sender.clone(),
|
|
|| {
|
|
stacking_context.optimize_and_draw_into_context(&mut paint_context,
|
|
&matrix,
|
|
None);
|
|
paint_context.draw_target.flush();
|
|
});
|
|
|
|
if opts::get().show_debug_parallel_paint {
|
|
// Overlay a transparent solid color to identify the thread that
|
|
// painted this tile.
|
|
let color = THREAD_TINT_COLORS[thread_id % THREAD_TINT_COLORS.len()];
|
|
paint_context.draw_solid_color(&Rect::new(Point2D::new(Au(0), Au(0)),
|
|
Size2D::new(Au::from_px(size.width),
|
|
Au::from_px(size.height))),
|
|
color);
|
|
}
|
|
if opts::get().paint_flashing {
|
|
// Overlay a random transparent color.
|
|
let color = *rand::thread_rng().choose(&THREAD_TINT_COLORS[..]).unwrap();
|
|
paint_context.draw_solid_color(&Rect::new(Point2D::new(Au(0), Au(0)),
|
|
Size2D::new(Au::from_px(size.width),
|
|
Au::from_px(size.height))),
|
|
color);
|
|
}
|
|
}
|
|
|
|
// Extract the texture from the draw target and place it into its slot in the buffer. If
|
|
// using CPU painting, upload it first.
|
|
if self.gl_context.is_none() {
|
|
draw_target.snapshot().get_data_surface().with_data(|data| {
|
|
buffer.native_surface.upload(native_display!(self), data);
|
|
debug!("painting worker thread uploading to native surface {}",
|
|
buffer.native_surface.get_id());
|
|
});
|
|
}
|
|
|
|
draw_target.finish();
|
|
buffer
|
|
}
|
|
|
|
fn create_layer_buffer(&mut self,
|
|
tile: &mut BufferRequest,
|
|
scale: f32)
|
|
-> Box<LayerBuffer> {
|
|
// Create an empty native surface. We mark it as not leaking
|
|
// in case it dies in transit to the compositor task.
|
|
let width = tile.screen_rect.size.width;
|
|
let height = tile.screen_rect.size.height;
|
|
let mut native_surface = tile.native_surface.take().unwrap_or_else(|| {
|
|
NativeSurface::new(native_display!(self), Size2D::new(width as i32, height as i32))
|
|
});
|
|
native_surface.mark_wont_leak();
|
|
|
|
box LayerBuffer {
|
|
native_surface: native_surface,
|
|
rect: tile.page_rect,
|
|
screen_pos: tile.screen_rect,
|
|
resolution: scale,
|
|
painted_with_cpu: self.gl_context.is_none(),
|
|
content_age: tile.content_age,
|
|
}
|
|
}
|
|
}
|
|
|
|
enum MsgToWorkerThread {
|
|
Exit,
|
|
PaintTile(usize, BufferRequest, Arc<StackingContext>, f32, LayerKind),
|
|
}
|
|
|
|
enum MsgFromWorkerThread {
|
|
PaintedTile(Box<LayerBuffer>),
|
|
}
|
|
|
|
pub static THREAD_TINT_COLORS: [Color; 8] = [
|
|
Color { r: 6.0 / 255.0, g: 153.0 / 255.0, b: 198.0 / 255.0, a: 0.7 },
|
|
Color { r: 255.0 / 255.0, g: 212.0 / 255.0, b: 83.0 / 255.0, a: 0.7 },
|
|
Color { r: 116.0 / 255.0, g: 29.0 / 255.0, b: 109.0 / 255.0, a: 0.7 },
|
|
Color { r: 204.0 / 255.0, g: 158.0 / 255.0, b: 199.0 / 255.0, a: 0.7 },
|
|
Color { r: 242.0 / 255.0, g: 46.0 / 255.0, b: 121.0 / 255.0, a: 0.7 },
|
|
Color { r: 116.0 / 255.0, g: 203.0 / 255.0, b: 196.0 / 255.0, a: 0.7 },
|
|
Color { r: 255.0 / 255.0, g: 249.0 / 255.0, b: 201.0 / 255.0, a: 0.7 },
|
|
Color { r: 137.0 / 255.0, g: 196.0 / 255.0, b: 78.0 / 255.0, a: 0.7 },
|
|
];
|