1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_MOJO_EMBEDDER_VIZ_LAYER_CONTEXT_H_
#define CC_MOJO_EMBEDDER_VIZ_LAYER_CONTEXT_H_
#include <cstdint>
#include <map>
#include <set>
#include "base/memory/raw_ref.h"
#include "cc/mojo_embedder/mojo_embedder_export.h"
#include "cc/trees/layer_context.h"
#include "cc/trees/layer_tree_host_impl.h"
#include "cc/trees/property_tree.h"
#include "mojo/public/cpp/bindings/associated_receiver.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "services/viz/public/mojom/compositing/animation.mojom.h"
#include "services/viz/public/mojom/compositing/compositor_frame_sink.mojom.h"
#include "services/viz/public/mojom/compositing/layer_context.mojom.h"
namespace cc {
class AnimationTimeline;
namespace mojo_embedder {
// A client-side implementation of LayerContext which runs over a Mojo
// connection to a GPU-side LayerContext backend within Viz.
class CC_MOJO_EMBEDDER_EXPORT VizLayerContext
: public LayerContext,
public viz::mojom::LayerContextClient {
public:
// Constructs a VizLayerContext which submits content on behalf of
// `frame_sink`. `client` must outlive this object.
VizLayerContext(viz::mojom::CompositorFrameSink& frame_sink,
LayerTreeHostImpl& host_impl);
~VizLayerContext() override;
// LayerContext:
void SetVisible(bool visible) override;
void UpdateDisplayTreeFrom(LayerTreeImpl& tree,
viz::ClientResourceProvider& resource_provider,
viz::RasterContextProvider& context_provider,
const gfx::Rect& viewport_damage_rect) override;
void UpdateDisplayTile(PictureLayerImpl& layer,
const Tile& tile,
viz::ClientResourceProvider& resource_provider,
viz::RasterContextProvider& context_provider,
bool update_damage) override;
// viz::mojom::LayerContextClient:
void OnRequestCommitForFrame(const viz::BeginFrameArgs& args) override;
private:
// Serializes any changes to animation state on `tree` since the last push to
// Viz. Any serialized changes are added to `update`.
void SerializeAnimationUpdates(LayerTreeImpl& tree,
viz::mojom::LayerTreeUpdate& update);
// Serializes any changes to `timeline` since the last push to Viz. If there
// have been no changes, this returns null.
viz::mojom::AnimationTimelinePtr MaybeSerializeAnimationTimeline(
AnimationTimeline& timeline);
const raw_ref<LayerTreeHostImpl> host_impl_;
mojo::AssociatedReceiver<viz::mojom::LayerContextClient> client_receiver_{
this};
mojo::AssociatedRemote<viz::mojom::LayerContext> service_;
// Index of all timelines and animations which have been pushed to the display
// tree already. This maps animation timeline ID to each timeline's set of
// animation IDs.
std::map<int32_t, std::set<int32_t>> pushed_animation_timelines_;
// A newly created layer context requires a full sync. This is required
// to handle context loss and recreation of the layer context.
bool needs_full_sync_ = true;
PropertyTrees last_committed_property_trees_{*host_impl_};
};
} // namespace mojo_embedder
} // namespace cc
#endif // CC_MOJO_EMBEDDER_VIZ_LAYER_CONTEXT_H_
|
