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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebRenderLayerManager.h"
#include "BasicLayers.h"
#include "Layers.h"
#include "GeckoProfiler.h"
#include "mozilla/StaticPrefs_apz.h"
#include "mozilla/StaticPrefs_layers.h"
#include "mozilla/dom/BrowserChild.h"
#include "mozilla/gfx/DrawEventRecorder.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/layers/CompositorBridgeChild.h"
#include "mozilla/layers/StackingContextHelper.h"
#include "mozilla/layers/TextureClient.h"
#include "mozilla/layers/TransactionIdAllocator.h"
#include "mozilla/layers/WebRenderBridgeChild.h"
#include "mozilla/layers/UpdateImageHelper.h"
#include "nsDisplayList.h"
#include "nsLayoutUtils.h"
#include "WebRenderCanvasRenderer.h"
#ifdef XP_WIN
# include "gfxDWriteFonts.h"
#endif
namespace mozilla {
using namespace gfx;
namespace layers {
WebRenderLayerManager::WebRenderLayerManager(nsIWidget* aWidget)
: mWidget(aWidget),
mLatestTransactionId{0},
mNeedsComposite(false),
mIsFirstPaint(false),
mTarget(nullptr),
mPaintSequenceNumber(0),
mWebRenderCommandBuilder(this),
mLastDisplayListSize(0) {
MOZ_COUNT_CTOR(WebRenderLayerManager);
mStateManager.mLayerManager = this;
if (XRE_IsContentProcess() &&
StaticPrefs::gfx_webrender_enable_item_cache_AtStartup()) {
static const size_t kInitialCacheSize = 1024;
static const size_t kMaximumCacheSize = 10240;
mDisplayItemCache.SetCapacity(kInitialCacheSize, kMaximumCacheSize);
}
}
KnowsCompositor* WebRenderLayerManager::AsKnowsCompositor() { return mWrChild; }
bool WebRenderLayerManager::Initialize(
PCompositorBridgeChild* aCBChild, wr::PipelineId aLayersId,
TextureFactoryIdentifier* aTextureFactoryIdentifier, nsCString& aError) {
MOZ_ASSERT(mWrChild == nullptr);
MOZ_ASSERT(aTextureFactoryIdentifier);
// When we fail to initialize WebRender, it is useful to know if it has ever
// succeeded, or if this is the first attempt.
static bool hasInitialized = false;
WindowKind windowKind;
if (mWidget->WindowType() != eWindowType_popup) {
windowKind = WindowKind::MAIN;
} else {
windowKind = WindowKind::SECONDARY;
}
LayoutDeviceIntSize size = mWidget->GetClientSize();
PWebRenderBridgeChild* bridge =
aCBChild->SendPWebRenderBridgeConstructor(aLayersId, size, windowKind);
if (!bridge) {
// This should only fail if we attempt to access a layer we don't have
// permission for, or more likely, the GPU process crashed again during
// reinitialization. We can expect to be notified again to reinitialize
// (which may or may not be using WebRender).
gfxCriticalNote << "Failed to create WebRenderBridgeChild.";
aError.Assign(hasInitialized
? "FEATURE_FAILURE_WEBRENDER_INITIALIZE_IPDL_POST"_ns
: "FEATURE_FAILURE_WEBRENDER_INITIALIZE_IPDL_FIRST"_ns);
return false;
}
TextureFactoryIdentifier textureFactoryIdentifier;
wr::MaybeIdNamespace idNamespace;
// Sync ipc
if (!bridge->SendEnsureConnected(&textureFactoryIdentifier, &idNamespace,
&aError)) {
gfxCriticalNote << "Failed as lost WebRenderBridgeChild.";
aError.Assign(hasInitialized
? "FEATURE_FAILURE_WEBRENDER_INITIALIZE_SYNC_POST"_ns
: "FEATURE_FAILURE_WEBRENDER_INITIALIZE_SYNC_FIRST"_ns);
return false;
}
if (textureFactoryIdentifier.mParentBackend == LayersBackend::LAYERS_NONE ||
idNamespace.isNothing()) {
gfxCriticalNote << "Failed to connect WebRenderBridgeChild.";
aError.Append(hasInitialized ? "_POST"_ns : "_FIRST"_ns);
return false;
}
mWrChild = static_cast<WebRenderBridgeChild*>(bridge);
WrBridge()->SetWebRenderLayerManager(this);
WrBridge()->IdentifyTextureHost(textureFactoryIdentifier);
WrBridge()->SetNamespace(idNamespace.ref());
*aTextureFactoryIdentifier = textureFactoryIdentifier;
hasInitialized = true;
return true;
}
void WebRenderLayerManager::Destroy() { DoDestroy(/* aIsSync */ false); }
void WebRenderLayerManager::DoDestroy(bool aIsSync) {
MOZ_ASSERT(NS_IsMainThread());
if (IsDestroyed()) {
return;
}
LayerManager::Destroy();
mStateManager.Destroy();
if (WrBridge()) {
WrBridge()->Destroy(aIsSync);
}
mWebRenderCommandBuilder.Destroy();
if (mTransactionIdAllocator) {
// Make sure to notify the refresh driver just in case it's waiting on a
// pending transaction. Do this at the top of the event loop so we don't
// cause a paint to occur during compositor shutdown.
RefPtr<TransactionIdAllocator> allocator = mTransactionIdAllocator;
TransactionId id = mLatestTransactionId;
RefPtr<Runnable> task = NS_NewRunnableFunction(
"TransactionIdAllocator::NotifyTransactionCompleted",
[allocator, id]() -> void {
allocator->NotifyTransactionCompleted(id);
});
NS_DispatchToMainThread(task.forget());
}
// Forget the widget pointer in case we outlive our owning widget.
mWidget = nullptr;
}
WebRenderLayerManager::~WebRenderLayerManager() {
Destroy();
MOZ_COUNT_DTOR(WebRenderLayerManager);
}
CompositorBridgeChild* WebRenderLayerManager::GetCompositorBridgeChild() {
return WrBridge()->GetCompositorBridgeChild();
}
void WebRenderLayerManager::GetBackendName(nsAString& name) {
if (WrBridge()->UsingSoftwareWebRenderD3D11()) {
name.AssignLiteral("WebRender (Software D3D11)");
} else if (WrBridge()->UsingSoftwareWebRenderOpenGL()) {
name.AssignLiteral("WebRender (Software OpenGL)");
} else if (WrBridge()->UsingSoftwareWebRender()) {
name.AssignLiteral("WebRender (Software)");
} else {
name.AssignLiteral("WebRender");
}
}
uint32_t WebRenderLayerManager::StartFrameTimeRecording(int32_t aBufferSize) {
CompositorBridgeChild* renderer = GetCompositorBridgeChild();
if (renderer) {
uint32_t startIndex;
renderer->SendStartFrameTimeRecording(aBufferSize, &startIndex);
return startIndex;
}
return -1;
}
void WebRenderLayerManager::StopFrameTimeRecording(
uint32_t aStartIndex, nsTArray<float>& aFrameIntervals) {
CompositorBridgeChild* renderer = GetCompositorBridgeChild();
if (renderer) {
renderer->SendStopFrameTimeRecording(aStartIndex, &aFrameIntervals);
}
}
void WebRenderLayerManager::PayloadPresented(const TimeStamp& aTimeStamp) {
MOZ_CRASH("WebRenderLayerManager::PayloadPresented should not be called");
}
void WebRenderLayerManager::TakeCompositionPayloads(
nsTArray<CompositionPayload>& aPayloads) {
aPayloads.Clear();
std::swap(mPayload, aPayloads);
}
bool WebRenderLayerManager::BeginTransactionWithTarget(gfxContext* aTarget,
const nsCString& aURL) {
mTarget = aTarget;
return BeginTransaction(aURL);
}
bool WebRenderLayerManager::BeginTransaction(const nsCString& aURL) {
if (!WrBridge()->IPCOpen()) {
gfxCriticalNote << "IPC Channel is already torn down unexpectedly\n";
return false;
}
mTransactionStart = TimeStamp::Now();
mURL = aURL;
// Increment the paint sequence number even if test logging isn't
// enabled in this process; it may be enabled in the parent process,
// and the parent process expects unique sequence numbers.
++mPaintSequenceNumber;
if (StaticPrefs::apz_test_logging_enabled()) {
mApzTestData.StartNewPaint(mPaintSequenceNumber);
}
return true;
}
bool WebRenderLayerManager::EndEmptyTransaction(EndTransactionFlags aFlags) {
// If we haven't sent a display list (since creation or since the last time we
// sent ClearDisplayList to the parent) then we can't do an empty transaction
// because the parent doesn't have a display list for us and we need to send a
// display list first.
if (!WrBridge()->GetSentDisplayList()) {
return false;
}
mDisplayItemCache.SkipWaitingForPartialDisplayList();
// Since we don't do repeat transactions right now, just set the time
mAnimationReadyTime = TimeStamp::Now();
mLatestTransactionId =
mTransactionIdAllocator->GetTransactionId(/*aThrottle*/ true);
if (aFlags & EndTransactionFlags::END_NO_COMPOSITE &&
!mWebRenderCommandBuilder.NeedsEmptyTransaction()) {
if (mPendingScrollUpdates.IsEmpty()) {
MOZ_ASSERT(!mTarget);
WrBridge()->SendSetFocusTarget(mFocusTarget);
// Revoke TransactionId to trigger next paint.
mTransactionIdAllocator->RevokeTransactionId(mLatestTransactionId);
mLatestTransactionId = mLatestTransactionId.Prev();
return true;
}
}
LayoutDeviceIntSize size = mWidget->GetClientSize();
WrBridge()->BeginTransaction();
mWebRenderCommandBuilder.EmptyTransaction();
// Get the time of when the refresh driver start its tick (if available),
// otherwise use the time of when LayerManager::BeginTransaction was called.
TimeStamp refreshStart = mTransactionIdAllocator->GetTransactionStart();
if (!refreshStart) {
refreshStart = mTransactionStart;
}
// Skip the synchronization for buffer since we also skip the painting during
// device-reset status.
if (!gfxPlatform::GetPlatform()->DidRenderingDeviceReset()) {
if (WrBridge()->GetSyncObject() &&
WrBridge()->GetSyncObject()->IsSyncObjectValid()) {
WrBridge()->GetSyncObject()->Synchronize();
}
}
GetCompositorBridgeChild()->EndCanvasTransaction();
Maybe<TransactionData> transactionData;
if (mStateManager.mAsyncResourceUpdates || !mPendingScrollUpdates.IsEmpty() ||
WrBridge()->HasWebRenderParentCommands()) {
transactionData.emplace();
transactionData->mIdNamespace = WrBridge()->GetNamespace();
transactionData->mPaintSequenceNumber = mPaintSequenceNumber;
if (mStateManager.mAsyncResourceUpdates) {
mStateManager.mAsyncResourceUpdates->Flush(
transactionData->mResourceUpdates, transactionData->mSmallShmems,
transactionData->mLargeShmems);
}
transactionData->mScrollUpdates = std::move(mPendingScrollUpdates);
for (const auto& scrollId : transactionData->mScrollUpdates.Keys()) {
nsLayoutUtils::NotifyPaintSkipTransaction(/*scroll id=*/scrollId);
}
}
Maybe<wr::IpcResourceUpdateQueue> nothing;
WrBridge()->EndEmptyTransaction(mFocusTarget, std::move(transactionData),
mLatestTransactionId,
mTransactionIdAllocator->GetVsyncId(),
mTransactionIdAllocator->GetVsyncStart(),
refreshStart, mTransactionStart, mURL);
mTransactionStart = TimeStamp();
MakeSnapshotIfRequired(size);
return true;
}
void WebRenderLayerManager::EndTransaction(DrawPaintedLayerCallback aCallback,
void* aCallbackData,
EndTransactionFlags aFlags) {
// This should never get called, all callers should use
// EndTransactionWithoutLayer instead.
MOZ_ASSERT(false);
}
void WebRenderLayerManager::EndTransactionWithoutLayer(
nsDisplayList* aDisplayList, nsDisplayListBuilder* aDisplayListBuilder,
WrFiltersHolder&& aFilters, WebRenderBackgroundData* aBackground,
const double aGeckoDLBuildTime) {
AUTO_PROFILER_TRACING_MARKER("Paint", "RenderLayers", GRAPHICS);
// Since we don't do repeat transactions right now, just set the time
mAnimationReadyTime = TimeStamp::Now();
WrBridge()->BeginTransaction();
LayoutDeviceIntSize size = mWidget->GetClientSize();
// While the first display list after tab-switch can be large, the
// following ones are always smaller thanks to interning (rarely above 0.3MB).
// So don't let the spike of the first allocation make us allocate a large
// contiguous buffer (with some likelihood of OOM, see bug 1531819).
static const size_t kMaxPrealloc = 300000;
size_t preallocate =
mLastDisplayListSize < kMaxPrealloc ? mLastDisplayListSize : kMaxPrealloc;
wr::DisplayListBuilder builder(WrBridge()->GetPipeline(),
WrBridge()->GetWebRenderBackend(), preallocate,
&mDisplayItemCache);
wr::IpcResourceUpdateQueue resourceUpdates(WrBridge());
wr::usize builderDumpIndex = 0;
bool containsSVGGroup = false;
bool dumpEnabled =
mWebRenderCommandBuilder.ShouldDumpDisplayList(aDisplayListBuilder);
Maybe<AutoDisplayItemCacheSuppressor> cacheSuppressor;
if (dumpEnabled) {
cacheSuppressor.emplace(&mDisplayItemCache);
printf_stderr("-- WebRender display list build --\n");
}
if (XRE_IsContentProcess() &&
StaticPrefs::gfx_webrender_dl_dump_content_serialized()) {
builder.DumpSerializedDisplayList();
}
if (aDisplayList) {
MOZ_ASSERT(aDisplayListBuilder && !aBackground);
mDisplayItemCache.SetDisplayList(aDisplayListBuilder, aDisplayList);
mWebRenderCommandBuilder.BuildWebRenderCommands(
builder, resourceUpdates, aDisplayList, aDisplayListBuilder,
mScrollData, std::move(aFilters));
aDisplayListBuilder->NotifyAndClearScrollFrames();
builderDumpIndex = mWebRenderCommandBuilder.GetBuilderDumpIndex();
containsSVGGroup = mWebRenderCommandBuilder.GetContainsSVGGroup();
} else {
// ViewToPaint does not have frame yet, then render only background clolor.
MOZ_ASSERT(!aDisplayListBuilder && aBackground);
aBackground->AddWebRenderCommands(builder);
if (dumpEnabled) {
printf_stderr("(no display list; background only)\n");
builderDumpIndex =
builder.Dump(/*indent*/ 1, Some(builderDumpIndex), Nothing());
}
}
mWidget->AddWindowOverlayWebRenderCommands(WrBridge(), builder,
resourceUpdates);
if (dumpEnabled) {
printf_stderr("(window overlay)\n");
Unused << builder.Dump(/*indent*/ 1, Some(builderDumpIndex), Nothing());
}
if (AsyncPanZoomEnabled()) {
if (mIsFirstPaint) {
mScrollData.SetIsFirstPaint();
mIsFirstPaint = false;
}
mScrollData.SetPaintSequenceNumber(mPaintSequenceNumber);
if (dumpEnabled) {
std::stringstream str;
str << mScrollData;
print_stderr(str);
}
}
// Since we're sending a full mScrollData that will include the new scroll
// offsets, and we can throw away the pending scroll updates we had kept for
// an empty transaction.
auto scrollIdsUpdated = ClearPendingScrollInfoUpdate();
for (ScrollableLayerGuid::ViewID update : scrollIdsUpdated) {
nsLayoutUtils::NotifyPaintSkipTransaction(update);
}
mLatestTransactionId =
mTransactionIdAllocator->GetTransactionId(/*aThrottle*/ true);
// Get the time of when the refresh driver start its tick (if available),
// otherwise use the time of when LayerManager::BeginTransaction was called.
TimeStamp refreshStart = mTransactionIdAllocator->GetTransactionStart();
if (!refreshStart) {
refreshStart = mTransactionStart;
}
if (mStateManager.mAsyncResourceUpdates) {
if (resourceUpdates.IsEmpty()) {
resourceUpdates.ReplaceResources(
std::move(mStateManager.mAsyncResourceUpdates.ref()));
} else {
WrBridge()->UpdateResources(mStateManager.mAsyncResourceUpdates.ref());
}
mStateManager.mAsyncResourceUpdates.reset();
}
mStateManager.DiscardImagesInTransaction(resourceUpdates);
WrBridge()->RemoveExpiredFontKeys(resourceUpdates);
// Skip the synchronization for buffer since we also skip the painting during
// device-reset status.
if (!gfxPlatform::GetPlatform()->DidRenderingDeviceReset()) {
if (WrBridge()->GetSyncObject() &&
WrBridge()->GetSyncObject()->IsSyncObjectValid()) {
WrBridge()->GetSyncObject()->Synchronize();
}
}
GetCompositorBridgeChild()->EndCanvasTransaction();
{
AUTO_PROFILER_TRACING_MARKER("Paint", "ForwardDPTransaction", GRAPHICS);
DisplayListData dlData;
builder.Finalize(dlData);
mLastDisplayListSize = dlData.mDL->mCapacity;
resourceUpdates.Flush(dlData.mResourceUpdates, dlData.mSmallShmems,
dlData.mLargeShmems);
dlData.mRect =
LayoutDeviceRect(LayoutDevicePoint(), LayoutDeviceSize(size));
dlData.mScrollData.emplace(std::move(mScrollData));
dlData.mDLDesc.gecko_display_list_type =
aDisplayListBuilder && aDisplayListBuilder->PartialBuildFailed()
? wr::GeckoDisplayListType::Full(aGeckoDLBuildTime)
: wr::GeckoDisplayListType::Partial(aGeckoDLBuildTime);
bool ret = WrBridge()->EndTransaction(
std::move(dlData), mLatestTransactionId, containsSVGGroup,
mTransactionIdAllocator->GetVsyncId(),
mTransactionIdAllocator->GetVsyncStart(), refreshStart,
mTransactionStart, mURL);
if (!ret) {
// Failed to send display list, reset display item cache state.
mDisplayItemCache.Clear();
}
WrBridge()->SendSetFocusTarget(mFocusTarget);
mFocusTarget = FocusTarget();
}
// Discard animations after calling WrBridge()->EndTransaction().
// It updates mWrEpoch in WebRenderBridgeParent. The updated mWrEpoch is
// necessary for deleting animations at the correct time.
mStateManager.DiscardCompositorAnimations();
mTransactionStart = TimeStamp();
MakeSnapshotIfRequired(size);
mNeedsComposite = false;
}
void WebRenderLayerManager::SetFocusTarget(const FocusTarget& aFocusTarget) {
mFocusTarget = aFocusTarget;
}
bool WebRenderLayerManager::AsyncPanZoomEnabled() const {
return mWidget->AsyncPanZoomEnabled();
}
void WebRenderLayerManager::MakeSnapshotIfRequired(LayoutDeviceIntSize aSize) {
if (!mTarget || aSize.IsEmpty()) {
return;
}
// XXX Add other TextureData supports.
// Only BufferTexture is supported now.
// TODO: fixup for proper surface format.
// The GLES spec only guarantees that RGBA can be used with glReadPixels,
// so on Android we use RGBA.
SurfaceFormat format =
#ifdef MOZ_WIDGET_ANDROID
SurfaceFormat::R8G8B8A8;
#else
SurfaceFormat::B8G8R8A8;
#endif
RefPtr<TextureClient> texture = TextureClient::CreateForRawBufferAccess(
WrBridge(), format, aSize.ToUnknownSize(), BackendType::SKIA,
TextureFlags::SNAPSHOT);
if (!texture) {
return;
}
texture->InitIPDLActor(WrBridge());
if (!texture->GetIPDLActor()) {
return;
}
IntRect bounds = ToOutsideIntRect(mTarget->GetClipExtents());
bool needsYFlip = false;
if (!WrBridge()->SendGetSnapshot(texture->GetIPDLActor(), &needsYFlip)) {
return;
}
TextureClientAutoLock autoLock(texture, OpenMode::OPEN_READ_ONLY);
if (!autoLock.Succeeded()) {
return;
}
RefPtr<DrawTarget> drawTarget = texture->BorrowDrawTarget();
if (!drawTarget || !drawTarget->IsValid()) {
return;
}
RefPtr<SourceSurface> snapshot = drawTarget->Snapshot();
/*
static int count = 0;
char filename[100];
snprintf(filename, 100, "output%d.png", count++);
printf_stderr("Writing to :%s\n", filename);
gfxUtils::WriteAsPNG(snapshot, filename);
*/
Rect dst(bounds.X(), bounds.Y(), bounds.Width(), bounds.Height());
Rect src(0, 0, bounds.Width(), bounds.Height());
Matrix m;
if (needsYFlip) {
m = Matrix::Scaling(1.0, -1.0).PostTranslate(0.0, aSize.height);
}
SurfacePattern pattern(snapshot, ExtendMode::CLAMP, m);
DrawTarget* dt = mTarget->GetDrawTarget();
MOZ_RELEASE_ASSERT(dt);
dt->FillRect(dst, pattern);
mTarget = nullptr;
}
void WebRenderLayerManager::DiscardImages() {
wr::IpcResourceUpdateQueue resources(WrBridge());
mStateManager.DiscardImagesInTransaction(resources);
WrBridge()->UpdateResources(resources);
}
void WebRenderLayerManager::DiscardLocalImages() {
mStateManager.DiscardLocalImages();
}
void WebRenderLayerManager::SetLayersObserverEpoch(LayersObserverEpoch aEpoch) {
if (WrBridge()->IPCOpen()) {
WrBridge()->SendSetLayersObserverEpoch(aEpoch);
}
}
void WebRenderLayerManager::DidComposite(
TransactionId aTransactionId, const mozilla::TimeStamp& aCompositeStart,
const mozilla::TimeStamp& aCompositeEnd) {
if (IsDestroyed()) {
return;
}
MOZ_ASSERT(mWidget);
// Notifying the observers may tick the refresh driver which can cause
// a lot of different things to happen that may affect the lifetime of
// this layer manager. So let's make sure this object stays alive until
// the end of the method invocation.
RefPtr<WebRenderLayerManager> selfRef = this;
// |aTransactionId| will be > 0 if the compositor is acknowledging a shadow
// layers transaction.
if (aTransactionId.IsValid()) {
nsIWidgetListener* listener = mWidget->GetWidgetListener();
if (listener) {
listener->DidCompositeWindow(aTransactionId, aCompositeStart,
aCompositeEnd);
}
listener = mWidget->GetAttachedWidgetListener();
if (listener) {
listener->DidCompositeWindow(aTransactionId, aCompositeStart,
aCompositeEnd);
}
if (mTransactionIdAllocator) {
mTransactionIdAllocator->NotifyTransactionCompleted(aTransactionId);
}
}
// These observers fire whether or not we were in a transaction.
for (size_t i = 0; i < mDidCompositeObservers.Length(); i++) {
mDidCompositeObservers[i]->DidComposite();
}
}
void WebRenderLayerManager::ClearCachedResources(Layer* aSubtree) {
if (!WrBridge()->IPCOpen()) {
gfxCriticalNote << "IPC Channel is already torn down unexpectedly\n";
return;
}
WrBridge()->BeginClearCachedResources();
// We flush any pending async resource updates before we clear the display
// list items because some resources (e.g. images) might be shared between
// multiple layer managers, not get freed here, and we want to keep their
// states consistent.
mStateManager.FlushAsyncResourceUpdates();
mWebRenderCommandBuilder.ClearCachedResources();
DiscardImages();
mStateManager.ClearCachedResources();
WrBridge()->EndClearCachedResources();
}
void WebRenderLayerManager::WrUpdated() {
ClearAsyncAnimations();
mStateManager.mAsyncResourceUpdates.reset();
mWebRenderCommandBuilder.ClearCachedResources();
DiscardLocalImages();
mDisplayItemCache.Clear();
if (mWidget) {
if (dom::BrowserChild* browserChild = mWidget->GetOwningBrowserChild()) {
browserChild->SchedulePaint();
}
}
}
void WebRenderLayerManager::UpdateTextureFactoryIdentifier(
const TextureFactoryIdentifier& aNewIdentifier) {
WrBridge()->IdentifyTextureHost(aNewIdentifier);
}
TextureFactoryIdentifier WebRenderLayerManager::GetTextureFactoryIdentifier() {
return WrBridge()->GetTextureFactoryIdentifier();
}
void WebRenderLayerManager::SetTransactionIdAllocator(
TransactionIdAllocator* aAllocator) {
// When changing the refresh driver, the previous refresh driver may never
// receive updates of pending transactions it's waiting for. So clear the
// waiting state before assigning another refresh driver.
if (mTransactionIdAllocator && (aAllocator != mTransactionIdAllocator)) {
mTransactionIdAllocator->ClearPendingTransactions();
// We should also reset the transaction id of the new allocator to previous
// allocator's last transaction id, so that completed transactions for
// previous allocator will be ignored and won't confuse the new allocator.
if (aAllocator) {
aAllocator->ResetInitialTransactionId(
mTransactionIdAllocator->LastTransactionId());
}
}
mTransactionIdAllocator = aAllocator;
}
TransactionId WebRenderLayerManager::GetLastTransactionId() {
return mLatestTransactionId;
}
void WebRenderLayerManager::AddDidCompositeObserver(
DidCompositeObserver* aObserver) {
if (!mDidCompositeObservers.Contains(aObserver)) {
mDidCompositeObservers.AppendElement(aObserver);
}
}
void WebRenderLayerManager::RemoveDidCompositeObserver(
DidCompositeObserver* aObserver) {
mDidCompositeObservers.RemoveElement(aObserver);
}
void WebRenderLayerManager::FlushRendering() {
CompositorBridgeChild* cBridge = GetCompositorBridgeChild();
if (!cBridge) {
return;
}
MOZ_ASSERT(mWidget);
// If value of IsResizingNativeWidget() is nothing, we assume that resizing
// might happen.
bool resizing = mWidget && mWidget->IsResizingNativeWidget().valueOr(true);
// Limit async FlushRendering to !resizing and Win DComp.
// XXX relax the limitation
if (WrBridge()->GetCompositorUseDComp() && !resizing) {
cBridge->SendFlushRenderingAsync();
} else if (mWidget->SynchronouslyRepaintOnResize() ||
StaticPrefs::layers_force_synchronous_resize()) {
cBridge->SendFlushRendering();
} else {
cBridge->SendFlushRenderingAsync();
}
}
void WebRenderLayerManager::WaitOnTransactionProcessed() {
CompositorBridgeChild* bridge = GetCompositorBridgeChild();
if (bridge) {
bridge->SendWaitOnTransactionProcessed();
}
}
void WebRenderLayerManager::SendInvalidRegion(const nsIntRegion& aRegion) {
// XXX Webrender does not support invalid region yet.
#ifdef XP_WIN
// When DWM is disabled, each window does not have own back buffer. They would
// paint directly to a buffer that was to be displayed by the video card.
// WM_PAINT via SendInvalidRegion() requests necessary re-paint.
const bool needsInvalidate = !gfx::gfxVars::DwmCompositionEnabled();
#else
const bool needsInvalidate = true;
#endif
if (needsInvalidate && WrBridge()) {
WrBridge()->SendInvalidateRenderedFrame();
}
}
void WebRenderLayerManager::ScheduleComposite() {
WrBridge()->SendScheduleComposite();
}
void WebRenderLayerManager::SetRoot(Layer* aLayer) {
// This should never get called
MOZ_ASSERT(false);
}
already_AddRefed<PersistentBufferProvider>
WebRenderLayerManager::CreatePersistentBufferProvider(
const gfx::IntSize& aSize, gfx::SurfaceFormat aFormat) {
// Ensure devices initialization for canvas 2d if not remote. The devices are
// lazily initialized with WebRender to reduce memory usage.
if (!gfxPlatform::UseRemoteCanvas()) {
gfxPlatform::GetPlatform()->EnsureDevicesInitialized();
}
RefPtr<PersistentBufferProvider> provider =
PersistentBufferProviderShared::Create(aSize, aFormat,
AsKnowsCompositor());
if (provider) {
return provider.forget();
}
return LayerManager::CreatePersistentBufferProvider(aSize, aFormat);
}
void WebRenderLayerManager::ClearAsyncAnimations() {
mStateManager.ClearAsyncAnimations();
}
void WebRenderLayerManager::WrReleasedImages(
const nsTArray<wr::ExternalImageKeyPair>& aPairs) {
mStateManager.WrReleasedImages(aPairs);
}
void WebRenderLayerManager::GetFrameUniformity(FrameUniformityData* aOutData) {
WrBridge()->SendGetFrameUniformity(aOutData);
}
} // namespace layers
} // namespace mozilla