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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/layers/surface_layer.h"
#include <stdint.h>
#include <memory>
#include <utility>
#include "base/trace_event/trace_event.h"
#include "cc/layers/surface_layer_impl.h"
#include "cc/trees/layer_tree_host.h"
namespace cc {
scoped_refptr<SurfaceLayer> SurfaceLayer::Create() {
return base::WrapRefCounted(new SurfaceLayer());
}
scoped_refptr<SurfaceLayer> SurfaceLayer::Create(
UpdateSubmissionStateCB update_submission_state_callback) {
return base::WrapRefCounted(
new SurfaceLayer(std::move(update_submission_state_callback)));
}
SurfaceLayer::SurfaceLayer()
: deadline_in_frames_(0u),
stretch_content_to_fill_bounds_(false),
surface_hit_testable_(false),
has_pointer_events_none_(false),
is_reflection_(false),
callback_layer_tree_host_changed_(false) {}
SurfaceLayer::SurfaceLayer(
UpdateSubmissionStateCB update_submission_state_callback)
: update_submission_state_callback_(
std::move(update_submission_state_callback)),
deadline_in_frames_(0u),
stretch_content_to_fill_bounds_(false),
surface_hit_testable_(false),
has_pointer_events_none_(false),
is_reflection_(false),
callback_layer_tree_host_changed_(false) {}
SurfaceLayer::~SurfaceLayer() {
DCHECK(!layer_tree_host());
}
void SurfaceLayer::SetSurfaceId(const viz::SurfaceId& surface_id,
const DeadlinePolicy& deadline_policy) {
if (surface_range_.Read(*this).end() == surface_id &&
deadline_policy.use_existing_deadline()) {
return;
}
auto& surface_range = surface_range_.Write(*this);
if (surface_id.local_surface_id().is_valid()) {
TRACE_EVENT_WITH_FLOW2(
TRACE_DISABLED_BY_DEFAULT("viz.surface_id_flow"),
"LocalSurfaceId.Embed.Flow",
TRACE_ID_GLOBAL(surface_id.local_surface_id().embed_trace_id()),
TRACE_EVENT_FLAG_FLOW_IN | TRACE_EVENT_FLAG_FLOW_OUT, "step",
"SetSurfaceId", "surface_id", surface_id.ToString());
}
if (layer_tree_host() && surface_range.IsValid())
layer_tree_host()->RemoveSurfaceRange(surface_range);
surface_range = viz::SurfaceRange(surface_range.start(), surface_id);
if (layer_tree_host() && surface_range.IsValid())
layer_tree_host()->AddSurfaceRange(surface_range);
// We should never block or set a deadline on an invalid
// |surface_range|.
if (!surface_range.IsValid()) {
deadline_in_frames_.Write(*this) = 0u;
} else if (!deadline_policy.use_existing_deadline()) {
deadline_in_frames_.Write(*this) = deadline_policy.deadline_in_frames();
}
UpdateDrawsContent();
SetNeedsCommit();
}
void SurfaceLayer::SetOldestAcceptableFallback(
const viz::SurfaceId& surface_id) {
// The fallback should never move backwards.
DCHECK(!surface_range_.Read(*this).start() ||
!surface_range_.Read(*this).start()->IsNewerThan(surface_id));
if (surface_range_.Read(*this).start() == surface_id)
return;
auto& surface_range = surface_range_.Write(*this);
if (layer_tree_host() && surface_range.IsValid())
layer_tree_host()->RemoveSurfaceRange(surface_range);
surface_range = viz::SurfaceRange(
surface_id.is_valid() ? std::optional<viz::SurfaceId>(surface_id)
: std::nullopt,
surface_range.end());
if (layer_tree_host() && surface_range.IsValid())
layer_tree_host()->AddSurfaceRange(surface_range);
SetNeedsCommit();
}
void SurfaceLayer::SetStretchContentToFillBounds(
bool stretch_content_to_fill_bounds) {
if (stretch_content_to_fill_bounds_.Read(*this) ==
stretch_content_to_fill_bounds)
return;
stretch_content_to_fill_bounds_.Write(*this) = stretch_content_to_fill_bounds;
SetNeedsPushProperties();
}
void SurfaceLayer::SetSurfaceHitTestable(bool surface_hit_testable) {
if (surface_hit_testable_.Read(*this) == surface_hit_testable)
return;
surface_hit_testable_.Write(*this) = surface_hit_testable;
}
void SurfaceLayer::SetHasPointerEventsNone(bool has_pointer_events_none) {
if (has_pointer_events_none_.Read(*this) == has_pointer_events_none)
return;
has_pointer_events_none_.Write(*this) = has_pointer_events_none;
SetNeedsPushProperties();
// Change of pointer-events property triggers an update of viz hit test data,
// we need to commit in order to submit the new data with compositor frame.
SetNeedsCommit();
}
void SurfaceLayer::SetIsReflection(bool is_reflection) {
is_reflection_.Write(*this) = true;
}
void SurfaceLayer::SetOverrideChildPaintFlags(bool override_child_paint_flags) {
override_child_paint_flags_.Write(*this) = true;
}
std::unique_ptr<LayerImpl> SurfaceLayer::CreateLayerImpl(
LayerTreeImpl* tree_impl) const {
auto layer_impl = SurfaceLayerImpl::Create(
tree_impl, id(), update_submission_state_callback_.Read(*this));
return layer_impl;
}
bool SurfaceLayer::RequiresSetNeedsDisplayOnHdrHeadroomChange() const {
// TODO(crbug.com/40065199): Only return true if the contents of the
// surface (the canvas, video, or ImageBitmap) are HDR.
return override_child_paint_flags_.Read(*this);
}
bool SurfaceLayer::HasDrawableContent() const {
return surface_range_.Read(*this).IsValid() && Layer::HasDrawableContent();
}
void SurfaceLayer::SetLayerTreeHost(LayerTreeHost* host) {
if (layer_tree_host() == host) {
return;
}
// Any time we change trees, start out as "not visible". Notify the impl layer
// in case drawing has already started so it can reset its drawing state.
// Note: if this layer is detached while throttled, the LayerImpl may remain
// in place until we reattach; in that case it will never know it went
// invisible and so needs to be reset.
auto callback = update_submission_state_callback_.Read(*this);
if (callback) {
callback.Run(false, nullptr);
callback_layer_tree_host_changed_.Write(*this) = true;
}
if (layer_tree_host() && surface_range_.Read(*this).IsValid())
layer_tree_host()->RemoveSurfaceRange(surface_range_.Read(*this));
Layer::SetLayerTreeHost(host);
if (layer_tree_host() && surface_range_.Read(*this).IsValid())
layer_tree_host()->AddSurfaceRange(surface_range_.Read(*this));
}
void SurfaceLayer::PushDirtyPropertiesTo(
LayerImpl* layer,
uint8_t dirty_flag,
const CommitState& commit_state,
const ThreadUnsafeCommitState& unsafe_state) {
Layer::PushDirtyPropertiesTo(layer, dirty_flag, commit_state, unsafe_state);
if (dirty_flag & kChangedGeneralProperty) {
TRACE_EVENT0("cc", "SurfaceLayer::PushPropertiesTo");
SurfaceLayerImpl* layer_impl = static_cast<SurfaceLayerImpl*>(layer);
layer_impl->SetRange(surface_range_.Read(*this),
std::move(deadline_in_frames_.Write(*this)));
// Unless the client explicitly calls SetSurfaceId again after this
// commit, don't block on |surface_range_| again.
deadline_in_frames_.Write(*this) = 0u;
layer_impl->SetIsReflection(is_reflection_.Read(*this));
layer_impl->SetOverrideChildPaintFlags(
override_child_paint_flags_.Read(*this));
layer_impl->SetStretchContentToFillBounds(
stretch_content_to_fill_bounds_.Read(*this));
layer_impl->SetSurfaceHitTestable(surface_hit_testable_.Read(*this));
layer_impl->SetHasPointerEventsNone(has_pointer_events_none_.Read(*this));
if (callback_layer_tree_host_changed_.Read(*this)) {
// Anytime SetLayerTreeHost is called and
// `update_submission_state_callback_` is defined, the callback will be
// used to reset the visibility state. We must share this information with
// the SurfaceLayerImpl since it also tracks visibility state so it can
// avoid unnecessary invocations of the callback.
layer_impl->ResetStateForUpdateSubmissionStateCallback();
callback_layer_tree_host_changed_.Write(*this) = false;
}
}
}
} // namespace cc
|
