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/*
* Copyright (C) 2013 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 "RenderThread.h"
#include "CanvasContext.h"
#include "DeviceInfo.h"
#include "EglManager.h"
#include "Readback.h"
#include "RenderProxy.h"
#include "VulkanManager.h"
#include "hwui/Bitmap.h"
#include "pipeline/skia/SkiaOpenGLPipeline.h"
#include "pipeline/skia/SkiaVulkanPipeline.h"
#include "renderstate/RenderState.h"
#include "utils/FatVector.h"
#include "utils/TimeUtils.h"
#ifdef HWUI_GLES_WRAP_ENABLED
#include "debug/GlesDriver.h"
#endif
#include <GrContextOptions.h>
#include <gl/GrGLInterface.h>
#include <gui/DisplayEventReceiver.h>
#include <sys/resource.h>
#include <utils/Condition.h>
#include <utils/Log.h>
#include <utils/Mutex.h>
namespace android {
namespace uirenderer {
namespace renderthread {
// Number of events to read at a time from the DisplayEventReceiver pipe.
// The value should be large enough that we can quickly drain the pipe
// using just a few large reads.
static const size_t EVENT_BUFFER_SIZE = 100;
// Slight delay to give the UI time to push us a new frame before we replay
static const nsecs_t DISPATCH_FRAME_CALLBACKS_DELAY = milliseconds_to_nanoseconds(4);
static bool gHasRenderThreadInstance = false;
static void (*gOnStartHook)() = nullptr;
class DisplayEventReceiverWrapper : public VsyncSource {
public:
DisplayEventReceiverWrapper(std::unique_ptr<DisplayEventReceiver>&& receiver)
: mDisplayEventReceiver(std::move(receiver)) {}
virtual void requestNextVsync() override {
status_t status = mDisplayEventReceiver->requestNextVsync();
LOG_ALWAYS_FATAL_IF(status != NO_ERROR, "requestNextVsync failed with status: %d", status);
}
virtual nsecs_t latestVsyncEvent() override {
DisplayEventReceiver::Event buf[EVENT_BUFFER_SIZE];
nsecs_t latest = 0;
ssize_t n;
while ((n = mDisplayEventReceiver->getEvents(buf, EVENT_BUFFER_SIZE)) > 0) {
for (ssize_t i = 0; i < n; i++) {
const DisplayEventReceiver::Event& ev = buf[i];
switch (ev.header.type) {
case DisplayEventReceiver::DISPLAY_EVENT_VSYNC:
latest = ev.header.timestamp;
break;
}
}
}
if (n < 0) {
ALOGW("Failed to get events from display event receiver, status=%d", status_t(n));
}
return latest;
}
private:
std::unique_ptr<DisplayEventReceiver> mDisplayEventReceiver;
};
class DummyVsyncSource : public VsyncSource {
public:
DummyVsyncSource(RenderThread* renderThread) : mRenderThread(renderThread) {}
virtual void requestNextVsync() override {
mRenderThread->queue().postDelayed(16_ms,
[this]() { mRenderThread->drainDisplayEventQueue(); });
}
virtual nsecs_t latestVsyncEvent() override { return systemTime(CLOCK_MONOTONIC); }
private:
RenderThread* mRenderThread;
};
bool RenderThread::hasInstance() {
return gHasRenderThreadInstance;
}
void RenderThread::setOnStartHook(void (*onStartHook)()) {
LOG_ALWAYS_FATAL_IF(hasInstance(), "can't set an onStartHook after we've started...");
gOnStartHook = onStartHook;
}
RenderThread& RenderThread::getInstance() {
// This is a pointer because otherwise __cxa_finalize
// will try to delete it like a Good Citizen but that causes us to crash
// because we don't want to delete the RenderThread normally.
static RenderThread* sInstance = new RenderThread();
gHasRenderThreadInstance = true;
return *sInstance;
}
RenderThread::RenderThread()
: ThreadBase()
, mVsyncSource(nullptr)
, mVsyncRequested(false)
, mFrameCallbackTaskPending(false)
, mRenderState(nullptr)
, mEglManager(nullptr)
, mVkManager(nullptr) {
Properties::load();
start("RenderThread");
}
RenderThread::~RenderThread() {
LOG_ALWAYS_FATAL("Can't destroy the render thread");
}
void RenderThread::initializeDisplayEventReceiver() {
LOG_ALWAYS_FATAL_IF(mVsyncSource, "Initializing a second DisplayEventReceiver?");
if (!Properties::isolatedProcess) {
auto receiver = std::make_unique<DisplayEventReceiver>();
status_t status = receiver->initCheck();
LOG_ALWAYS_FATAL_IF(status != NO_ERROR,
"Initialization of DisplayEventReceiver "
"failed with status: %d",
status);
// Register the FD
mLooper->addFd(receiver->getFd(), 0, Looper::EVENT_INPUT,
RenderThread::displayEventReceiverCallback, this);
mVsyncSource = new DisplayEventReceiverWrapper(std::move(receiver));
} else {
mVsyncSource = new DummyVsyncSource(this);
}
}
void RenderThread::initThreadLocals() {
mDisplayInfo = DeviceInfo::get()->displayInfo();
nsecs_t frameIntervalNanos = static_cast<nsecs_t>(1000000000 / mDisplayInfo.fps);
mTimeLord.setFrameInterval(frameIntervalNanos);
initializeDisplayEventReceiver();
mEglManager = new EglManager();
mRenderState = new RenderState(*this);
mVkManager = new VulkanManager(*this);
mCacheManager = new CacheManager(mDisplayInfo);
}
void RenderThread::requireGlContext() {
if (mEglManager->hasEglContext()) {
return;
}
mEglManager->initialize();
#ifdef HWUI_GLES_WRAP_ENABLED
debug::GlesDriver* driver = debug::GlesDriver::get();
sk_sp<const GrGLInterface> glInterface(driver->getSkiaInterface());
#else
sk_sp<const GrGLInterface> glInterface(GrGLCreateNativeInterface());
#endif
LOG_ALWAYS_FATAL_IF(!glInterface.get());
GrContextOptions options;
options.fPreferExternalImagesOverES3 = true;
options.fDisableDistanceFieldPaths = true;
auto glesVersion = reinterpret_cast<const char*>(glGetString(GL_VERSION));
auto size = glesVersion ? strlen(glesVersion) : -1;
cacheManager().configureContext(&options, glesVersion, size);
sk_sp<GrContext> grContext(GrContext::MakeGL(std::move(glInterface), options));
LOG_ALWAYS_FATAL_IF(!grContext.get());
setGrContext(grContext);
}
void RenderThread::destroyGlContext() {
if (mEglManager->hasEglContext()) {
setGrContext(nullptr);
mEglManager->destroy();
}
}
void RenderThread::dumpGraphicsMemory(int fd) {
globalProfileData()->dump(fd);
String8 cachesOutput;
String8 pipeline;
auto renderType = Properties::getRenderPipelineType();
switch (renderType) {
case RenderPipelineType::SkiaGL: {
mCacheManager->dumpMemoryUsage(cachesOutput, mRenderState);
pipeline.appendFormat("Skia (OpenGL)");
break;
}
case RenderPipelineType::SkiaVulkan: {
mCacheManager->dumpMemoryUsage(cachesOutput, mRenderState);
pipeline.appendFormat("Skia (Vulkan)");
break;
}
default:
LOG_ALWAYS_FATAL("canvas context type %d not supported", (int32_t)renderType);
break;
}
dprintf(fd, "\n%s\n", cachesOutput.string());
dprintf(fd, "\nPipeline=%s\n", pipeline.string());
}
Readback& RenderThread::readback() {
if (!mReadback) {
mReadback = new Readback(*this);
}
return *mReadback;
}
void RenderThread::setGrContext(sk_sp<GrContext> context) {
mCacheManager->reset(context);
if (mGrContext) {
mRenderState->onContextDestroyed();
mGrContext->releaseResourcesAndAbandonContext();
}
mGrContext = std::move(context);
if (mGrContext) {
mRenderState->onContextCreated();
DeviceInfo::setMaxTextureSize(mGrContext->maxRenderTargetSize());
}
}
int RenderThread::displayEventReceiverCallback(int fd, int events, void* data) {
if (events & (Looper::EVENT_ERROR | Looper::EVENT_HANGUP)) {
ALOGE("Display event receiver pipe was closed or an error occurred. "
"events=0x%x",
events);
return 0; // remove the callback
}
if (!(events & Looper::EVENT_INPUT)) {
ALOGW("Received spurious callback for unhandled poll event. "
"events=0x%x",
events);
return 1; // keep the callback
}
reinterpret_cast<RenderThread*>(data)->drainDisplayEventQueue();
return 1; // keep the callback
}
void RenderThread::drainDisplayEventQueue() {
ATRACE_CALL();
nsecs_t vsyncEvent = mVsyncSource->latestVsyncEvent();
if (vsyncEvent > 0) {
mVsyncRequested = false;
if (mTimeLord.vsyncReceived(vsyncEvent) && !mFrameCallbackTaskPending) {
ATRACE_NAME("queue mFrameCallbackTask");
mFrameCallbackTaskPending = true;
nsecs_t runAt = (vsyncEvent + DISPATCH_FRAME_CALLBACKS_DELAY);
queue().postAt(runAt, [this]() { dispatchFrameCallbacks(); });
}
}
}
void RenderThread::dispatchFrameCallbacks() {
ATRACE_CALL();
mFrameCallbackTaskPending = false;
std::set<IFrameCallback*> callbacks;
mFrameCallbacks.swap(callbacks);
if (callbacks.size()) {
// Assume one of them will probably animate again so preemptively
// request the next vsync in case it occurs mid-frame
requestVsync();
for (std::set<IFrameCallback*>::iterator it = callbacks.begin(); it != callbacks.end();
it++) {
(*it)->doFrame();
}
}
}
void RenderThread::requestVsync() {
if (!mVsyncRequested) {
mVsyncRequested = true;
mVsyncSource->requestNextVsync();
}
}
bool RenderThread::threadLoop() {
setpriority(PRIO_PROCESS, 0, PRIORITY_DISPLAY);
if (gOnStartHook) {
gOnStartHook();
}
initThreadLocals();
while (true) {
waitForWork();
processQueue();
if (mPendingRegistrationFrameCallbacks.size() && !mFrameCallbackTaskPending) {
drainDisplayEventQueue();
mFrameCallbacks.insert(mPendingRegistrationFrameCallbacks.begin(),
mPendingRegistrationFrameCallbacks.end());
mPendingRegistrationFrameCallbacks.clear();
requestVsync();
}
if (!mFrameCallbackTaskPending && !mVsyncRequested && mFrameCallbacks.size()) {
// TODO: Clean this up. This is working around an issue where a combination
// of bad timing and slow drawing can result in dropping a stale vsync
// on the floor (correct!) but fails to schedule to listen for the
// next vsync (oops), so none of the callbacks are run.
requestVsync();
}
}
return false;
}
void RenderThread::postFrameCallback(IFrameCallback* callback) {
mPendingRegistrationFrameCallbacks.insert(callback);
}
bool RenderThread::removeFrameCallback(IFrameCallback* callback) {
size_t erased;
erased = mFrameCallbacks.erase(callback);
erased |= mPendingRegistrationFrameCallbacks.erase(callback);
return erased;
}
void RenderThread::pushBackFrameCallback(IFrameCallback* callback) {
if (mFrameCallbacks.erase(callback)) {
mPendingRegistrationFrameCallbacks.insert(callback);
}
}
sk_sp<Bitmap> RenderThread::allocateHardwareBitmap(SkBitmap& skBitmap) {
auto renderType = Properties::getRenderPipelineType();
switch (renderType) {
case RenderPipelineType::SkiaVulkan:
return skiapipeline::SkiaVulkanPipeline::allocateHardwareBitmap(*this, skBitmap);
default:
LOG_ALWAYS_FATAL("canvas context type %d not supported", (int32_t)renderType);
break;
}
return nullptr;
}
bool RenderThread::isCurrent() {
return gettid() == getInstance().getTid();
}
} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */