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/*
* 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.
*/
#define ATRACE_TAG ATRACE_TAG_VIEW
#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(kSync_OK) {
}
DrawFrameTask::~DrawFrameTask() {
}
void DrawFrameTask::setContext(RenderThread* thread, CanvasContext* context) {
mRenderThread = thread;
mContext = context;
}
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() {
LOG_ALWAYS_FATAL_IF(!mContext, "Cannot drawFrame with no CanvasContext!");
mSyncResult = kSync_OK;
mSyncQueued = systemTime(CLOCK_MONOTONIC);
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, mRenderThread->renderState());
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);
mContext->makeCurrent();
Caches::getInstance().textureCache.resetMarkInUse(mContext);
for (size_t i = 0; i < mLayers.size(); i++) {
mContext->processLayerUpdate(mLayers[i].get());
}
mLayers.clear();
mContext->prepareTree(info, mFrameInfo, mSyncQueued);
// This is after the prepareTree so that any pending operations
// (RenderNode tree state, prefetched layers, etc...) will be flushed.
if (CC_UNLIKELY(!mContext->hasSurface())) {
mSyncResult |= kSync_LostSurfaceRewardIfFound;
}
if (info.out.hasAnimations) {
if (info.out.requiresUiRedraw) {
mSyncResult |= kSync_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 */
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