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Fix a compositor race condition that can result in the most recent buffer not being painted.

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This commit is contained in:
Glenn Watson 2015-05-12 10:34:05 +10:00
parent 885068207f
commit 79942f0920
4 changed files with 44 additions and 22 deletions
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9
components/compositing/compositor_task.rs
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@ -17,7 +17,7 @@ use geom::rect::Rect;
use geom::size::Size2D;
use layers::platform::surface::{NativeCompositingGraphicsContext, NativeGraphicsMetadata};
use layers::layers::LayerBufferSet;
use msg::compositor_msg::{Epoch, LayerId, LayerMetadata, ReadyState};
use msg::compositor_msg::{Epoch, LayerId, LayerMetadata, FrameTreeId, ReadyState};
use msg::compositor_msg::{PaintListener, PaintState, ScriptListener, ScrollPolicy};
use msg::constellation_msg::{AnimationState, ConstellationChan, PipelineId};
use msg::constellation_msg::{Key, KeyState, KeyModifiers};
@ -134,8 +134,9 @@ impl PaintListener for Box<CompositorProxy+'static+Send> {
fn assign_painted_buffers(&mut self,
pipeline_id: PipelineId,
epoch: Epoch,
replies: Vec<(LayerId, Box<LayerBufferSet>)>) {
self.send(Msg::AssignPaintedBuffers(pipeline_id, epoch, replies));
replies: Vec<(LayerId, Box<LayerBufferSet>)>,
frame_tree_id: FrameTreeId) {
self.send(Msg::AssignPaintedBuffers(pipeline_id, epoch, replies, frame_tree_id));
}
fn initialize_layers_for_pipeline(&mut self,
@ -194,7 +195,7 @@ pub enum Msg {
/// Scroll a page in a window
ScrollFragmentPoint(PipelineId, LayerId, Point2D<f32>),
/// Requests that the compositor assign the painted buffers to the given layers.
AssignPaintedBuffers(PipelineId, Epoch, Vec<(LayerId, Box<LayerBufferSet>)>),
AssignPaintedBuffers(PipelineId, Epoch, Vec<(LayerId, Box<LayerBufferSet>)>, FrameTreeId),
/// Alerts the compositor to the current status of page loading.
ChangeReadyState(PipelineId, ReadyState),
/// Alerts the compositor to the current status of painting.