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Send incremental frame tree updates to the compositor
This allows the compositor to add frames after the call to SetIds, where the initial frame tree is created. There are still some issues preventing proper late frame creation, but this prevents crashes when it happens. Fixes #3738.
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5 changed files with 130 additions and 28 deletions
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@ -4,12 +4,13 @@
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use compositor_layer::{CompositorData, CompositorLayer, DoesntWantScrollEvents};
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use compositor_layer::{ScrollPositionChanged, WantsScrollEvents};
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use compositor_task::{Msg, CompositorTask, Exit, ChangeReadyState, SetIds, LayerProperties};
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use compositor_task::{GetGraphicsMetadata, CreateOrUpdateRootLayer, CreateOrUpdateDescendantLayer};
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use compositor_task::{SetLayerOrigin, Paint, ScrollFragmentPoint, LoadComplete};
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use compositor_task::{ShutdownComplete, ChangeRenderState, RenderMsgDiscarded, ScrollTimeout};
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use compositor_task::{CompositorEventListener, CompositorProxy, CompositorReceiver};
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use constellation::SendableFrameTree;
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use compositor_task::{ChangeReadyState, ChangeRenderState, CompositorEventListener};
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use compositor_task::{CompositorProxy, CompositorReceiver, CompositorTask};
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use compositor_task::{CreateOrUpdateDescendantLayer, CreateOrUpdateRootLayer, Exit};
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use compositor_task::{FrameTreeUpdateMsg, GetGraphicsMetadata, LayerProperties};
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use compositor_task::{LoadComplete, Msg, Paint, RenderMsgDiscarded, ScrollFragmentPoint};
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use compositor_task::{ScrollTimeout, SetIds, SetLayerOrigin, ShutdownComplete};
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use constellation::{SendableFrameTree, FrameTreeDiff};
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use pipeline::CompositionPipeline;
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use scrolling::ScrollingTimerProxy;
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use windowing;
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@ -267,6 +268,11 @@ impl<Window: WindowMethods> IOCompositor<Window> {
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new_constellation_chan);
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}
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(FrameTreeUpdateMsg(frame_tree_diff, response_channel), NotShuttingDown) => {
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self.update_frame_tree(&frame_tree_diff);
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response_channel.send(());
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}
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(CreateOrUpdateRootLayer(layer_properties), NotShuttingDown) => {
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self.create_or_update_root_layer(layer_properties);
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}
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@ -446,6 +452,34 @@ impl<Window: WindowMethods> IOCompositor<Window> {
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return root_layer;
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}
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fn update_frame_tree(&mut self, frame_tree_diff: &FrameTreeDiff) {
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let layer_properties = LayerProperties {
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pipeline_id: frame_tree_diff.pipeline.id,
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epoch: Epoch(0),
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id: LayerId::null(),
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rect: Rect::zero(),
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background_color: azure_hl::Color::new(0., 0., 0., 0.),
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scroll_policy: Scrollable,
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};
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let root_layer = CompositorData::new_layer(frame_tree_diff.pipeline.clone(),
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layer_properties,
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WantsScrollEvents,
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opts::get().tile_size);
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match frame_tree_diff.rect {
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Some(ref frame_rect) => {
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*root_layer.masks_to_bounds.borrow_mut() = true;
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let frame_rect = frame_rect.to_untyped();
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*root_layer.bounds.borrow_mut() = Rect::from_untyped(&frame_rect);
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}
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None => {}
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}
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let parent_layer = self.find_pipeline_root_layer(frame_tree_diff.parent_pipeline.id);
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parent_layer.add_child(root_layer);
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}
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fn find_pipeline_root_layer(&self, pipeline_id: PipelineId) -> Rc<Layer<CompositorData>> {
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match self.find_layer_with_pipeline_and_layer_id(pipeline_id, LayerId::null()) {
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Some(ref layer) => layer.clone(),
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