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
|
/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "DrawFrameTask.h"
#include <utils/Log.h>
#include <utils/Trace.h>
#include "../DeferredLayerUpdater.h"
#include "../DisplayList.h"
#include "../RenderNode.h"
#include "CanvasContext.h"
#include "RenderThread.h"
namespace android {
namespace uirenderer {
namespace renderthread {
DrawFrameTask::DrawFrameTask()
: mRenderThread(nullptr)
, mContext(nullptr)
, mSyncResult(SyncResult::OK) {
}
DrawFrameTask::~DrawFrameTask() {
}
void DrawFrameTask::setContext(RenderThread* thread, CanvasContext* context,
RenderNode* targetNode) {
mRenderThread = thread;
mContext = context;
mTargetNode = targetNode;
}
void DrawFrameTask::pushLayerUpdate(DeferredLayerUpdater* layer) {
LOG_ALWAYS_FATAL_IF(!mContext, "Lifecycle violation, there's no context to pushLayerUpdate with!");
for (size_t i = 0; i < mLayers.size(); i++) {
if (mLayers[i].get() == layer) {
return;
}
}
mLayers.push_back(layer);
}
void DrawFrameTask::removeLayerUpdate(DeferredLayerUpdater* layer) {
for (size_t i = 0; i < mLayers.size(); i++) {
if (mLayers[i].get() == layer) {
mLayers.erase(mLayers.begin() + i);
return;
}
}
}
int DrawFrameTask::drawFrame(TreeObserver* observer) {
LOG_ALWAYS_FATAL_IF(!mContext, "Cannot drawFrame with no CanvasContext!");
mSyncResult = SyncResult::OK;
mSyncQueued = systemTime(CLOCK_MONOTONIC);
mObserver = observer;
postAndWait();
return mSyncResult;
}
void DrawFrameTask::postAndWait() {
AutoMutex _lock(mLock);
mRenderThread->queue(this);
mSignal.wait(mLock);
}
void DrawFrameTask::run() {
ATRACE_NAME("DrawFrame");
bool canUnblockUiThread;
bool canDrawThisFrame;
{
TreeInfo info(TreeInfo::MODE_FULL, *mContext);
info.observer = mObserver;
canUnblockUiThread = syncFrameState(info);
canDrawThisFrame = info.out.canDrawThisFrame;
}
// Grab a copy of everything we need
CanvasContext* context = mContext;
// From this point on anything in "this" is *UNSAFE TO ACCESS*
if (canUnblockUiThread) {
unblockUiThread();
}
if (CC_LIKELY(canDrawThisFrame)) {
context->draw();
}
if (!canUnblockUiThread) {
unblockUiThread();
}
}
bool DrawFrameTask::syncFrameState(TreeInfo& info) {
ATRACE_CALL();
int64_t vsync = mFrameInfo[static_cast<int>(FrameInfoIndex::Vsync)];
mRenderThread->timeLord().vsyncReceived(vsync);
bool canDraw = mContext->makeCurrent();
Caches::getInstance().textureCache.resetMarkInUse(mContext);
for (size_t i = 0; i < mLayers.size(); i++) {
mLayers[i]->apply();
}
mLayers.clear();
mContext->prepareTree(info, mFrameInfo, mSyncQueued, mTargetNode);
// This is after the prepareTree so that any pending operations
// (RenderNode tree state, prefetched layers, etc...) will be flushed.
if (CC_UNLIKELY(!mContext->hasSurface() || !canDraw)) {
if (!mContext->hasSurface()) {
mSyncResult |= SyncResult::LostSurfaceRewardIfFound;
} else {
// If we have a surface but can't draw we must be stopped
mSyncResult |= SyncResult::ContextIsStopped;
}
info.out.canDrawThisFrame = false;
}
if (info.out.hasAnimations) {
if (info.out.requiresUiRedraw) {
mSyncResult |= SyncResult::UIRedrawRequired;
}
}
// If prepareTextures is false, we ran out of texture cache space
return info.prepareTextures;
}
void DrawFrameTask::unblockUiThread() {
AutoMutex _lock(mLock);
mSignal.signal();
}
} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */
|
