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gecko-dev/gfx/layers/ipc/ShadowLayers.cpp

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C++
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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 "ClientLayerManager.h" // for ClientLayerManager
#include "ShadowLayers.h"
#include <set> // for _Rb_tree_const_iterator, etc
#include <vector> // for vector
#include "GeckoProfiler.h" // for AUTO_PROFILER_LABEL
#include "ISurfaceAllocator.h" // for IsSurfaceDescriptorValid
#include "Layers.h" // for Layer
#include "RenderTrace.h" // for RenderTraceScope
#include "gfx2DGlue.h" // for Moz2D transition helpers
#include "gfxPlatform.h" // for gfxImageFormat, gfxPlatform
#include "gfxPrefs.h"
//#include "gfxSharedImageSurface.h" // for gfxSharedImageSurface
#include "ipc/IPCMessageUtils.h" // for gfxContentType, null_t
#include "IPDLActor.h"
#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
#include "mozilla/dom/TabGroup.h"
#include "mozilla/gfx/Point.h" // for IntSize
#include "mozilla/layers/CompositableClient.h" // for CompositableClient, etc
#include "mozilla/layers/CompositorBridgeChild.h"
#include "mozilla/layers/ContentClient.h"
#include "mozilla/layers/ImageDataSerializer.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "mozilla/layers/LayersMessages.h" // for Edit, etc
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
#include "mozilla/layers/LayersTypes.h" // for MOZ_LAYERS_LOG
#include "mozilla/layers/LayerTransactionChild.h"
#include "mozilla/layers/PTextureChild.h"
#include "mozilla/layers/SyncObject.h"
#include "ShadowLayerUtils.h"
#include "mozilla/layers/TextureClient.h" // for TextureClient
#include "mozilla/mozalloc.h" // for operator new, etc
#include "nsTArray.h" // for AutoTArray, nsTArray, etc
#include "nsXULAppAPI.h" // for XRE_GetProcessType, etc
#include "mozilla/ReentrantMonitor.h"
namespace mozilla {
namespace ipc {
class Shmem;
} // namespace ipc
namespace layers {
using namespace mozilla::gfx;
using namespace mozilla::gl;
using namespace mozilla::ipc;
class ClientTiledLayerBuffer;
typedef nsTArray<SurfaceDescriptor> BufferArray;
typedef nsTArray<Edit> EditVector;
typedef nsTHashtable<nsPtrHashKey<ShadowableLayer>> ShadowableLayerSet;
typedef nsTArray<OpDestroy> OpDestroyVector;
typedef nsTArray<ReadLockInit> ReadLockVector;
class Transaction
{
public:
Transaction()
: mReadLockSequenceNumber(0)
, mTargetRotation(ROTATION_0)
, mOpen(false)
, mRotationChanged(false)
{}
void Begin(const gfx::IntRect& aTargetBounds, ScreenRotation aRotation,
dom::ScreenOrientationInternal aOrientation)
{
mOpen = true;
mTargetBounds = aTargetBounds;
if (aRotation != mTargetRotation) {
// the first time this is called, mRotationChanged will be false if
// aRotation is 0, but we should be OK because for the first transaction
// we should only compose if it is non-empty. See the caller(s) of
// RotationChanged.
mRotationChanged = true;
}
mTargetRotation = aRotation;
mTargetOrientation = aOrientation;
mReadLockSequenceNumber = 0;
mReadLocks.AppendElement();
}
void AddEdit(const Edit& aEdit)
{
MOZ_ASSERT(!Finished(), "forgot BeginTransaction?");
mCset.AppendElement(aEdit);
}
void AddEdit(const CompositableOperation& aEdit)
{
AddEdit(Edit(aEdit));
}
void AddNoSwapPaint(const CompositableOperation& aPaint)
{
MOZ_ASSERT(!Finished(), "forgot BeginTransaction?");
mPaints.AppendElement(Edit(aPaint));
}
void AddMutant(ShadowableLayer* aLayer)
{
MOZ_ASSERT(!Finished(), "forgot BeginTransaction?");
mMutants.PutEntry(aLayer);
}
void AddSimpleMutant(ShadowableLayer* aLayer)
{
MOZ_ASSERT(!Finished(), "forgot BeginTransaction?");
mSimpleMutants.PutEntry(aLayer);
}
ReadLockHandle AddReadLock(const ReadLockDescriptor& aReadLock)
{
ReadLockHandle handle(++mReadLockSequenceNumber);
if (mReadLocks.LastElement().Length() >= CompositableForwarder::GetMaxFileDescriptorsPerMessage()) {
mReadLocks.AppendElement();
}
mReadLocks.LastElement().AppendElement(ReadLockInit(aReadLock, handle));
return handle;
}
void End()
{
mCset.Clear();
mPaints.Clear();
mMutants.Clear();
mSimpleMutants.Clear();
mDestroyedActors.Clear();
mReadLocks.Clear();
mOpen = false;
mRotationChanged = false;
}
bool Empty() const {
return mCset.IsEmpty() &&
mPaints.IsEmpty() &&
mMutants.IsEmpty() &&
mSimpleMutants.IsEmpty() &&
mDestroyedActors.IsEmpty();
}
bool RotationChanged() const {
return mRotationChanged;
}
bool Finished() const { return !mOpen && Empty(); }
bool Opened() const { return mOpen; }
EditVector mCset;
nsTArray<CompositableOperation> mPaints;
OpDestroyVector mDestroyedActors;
ShadowableLayerSet mMutants;
ShadowableLayerSet mSimpleMutants;
nsTArray<ReadLockVector> mReadLocks;
uint64_t mReadLockSequenceNumber;
gfx::IntRect mTargetBounds;
ScreenRotation mTargetRotation;
dom::ScreenOrientationInternal mTargetOrientation;
private:
bool mOpen;
bool mRotationChanged;
// disabled
Transaction(const Transaction&);
Transaction& operator=(const Transaction&);
};
struct AutoTxnEnd {
explicit AutoTxnEnd(Transaction* aTxn) : mTxn(aTxn) {}
~AutoTxnEnd() { mTxn->End(); }
Transaction* mTxn;
};
void
KnowsCompositor::IdentifyTextureHost(const TextureFactoryIdentifier& aIdentifier)
{
mTextureFactoryIdentifier = aIdentifier;
mSyncObject = SyncObjectClient::CreateSyncObjectClient(aIdentifier.mSyncHandle);
}
KnowsCompositor::KnowsCompositor()
: mSerial(++sSerialCounter)
{}
KnowsCompositor::~KnowsCompositor()
{}
KnowsCompositorMediaProxy::KnowsCompositorMediaProxy(const TextureFactoryIdentifier& aIdentifier)
{
mTextureFactoryIdentifier = aIdentifier;
// overwrite mSerial's value set by the parent class because we use the same serial
// as the KnowsCompositor we are proxying.
mThreadSafeAllocator = ImageBridgeChild::GetSingleton();
mSyncObject = mThreadSafeAllocator->GetSyncObject();
}
KnowsCompositorMediaProxy::~KnowsCompositorMediaProxy()
{}
TextureForwarder*
KnowsCompositorMediaProxy::GetTextureForwarder()
{
return mThreadSafeAllocator->GetTextureForwarder();
}
LayersIPCActor*
KnowsCompositorMediaProxy::GetLayersIPCActor()
{
return mThreadSafeAllocator->GetLayersIPCActor();
}
ActiveResourceTracker*
KnowsCompositorMediaProxy::GetActiveResourceTracker()
{
return mThreadSafeAllocator->GetActiveResourceTracker();
}
void
KnowsCompositorMediaProxy::SyncWithCompositor()
{
mThreadSafeAllocator->SyncWithCompositor();
}
RefPtr<KnowsCompositor>
ShadowLayerForwarder::GetForMedia()
{
return MakeAndAddRef<KnowsCompositorMediaProxy>(GetTextureFactoryIdentifier());
}
ShadowLayerForwarder::ShadowLayerForwarder(ClientLayerManager* aClientLayerManager)
: mClientLayerManager(aClientLayerManager)
, mMessageLoop(MessageLoop::current())
, mDiagnosticTypes(DiagnosticTypes::NO_DIAGNOSTIC)
, mIsFirstPaint(false)
, mWindowOverlayChanged(false)
, mNextLayerHandle(1)
{
mTxn = new Transaction();
if (TabGroup* tabGroup = mClientLayerManager->GetTabGroup()) {
mEventTarget = tabGroup->EventTargetFor(TaskCategory::Other);
}
MOZ_ASSERT(mEventTarget || !XRE_IsContentProcess());
mActiveResourceTracker = MakeUnique<ActiveResourceTracker>(
1000, "CompositableForwarder", mEventTarget);
}
template<typename T>
struct ReleaseOnMainThreadTask : public Runnable
{
UniquePtr<T> mObj;
explicit ReleaseOnMainThreadTask(UniquePtr<T>& aObj)
: Runnable("layers::ReleaseOnMainThreadTask")
, mObj(Move(aObj))
{}
NS_IMETHOD Run() override {
mObj = nullptr;
return NS_OK;
}
};
ShadowLayerForwarder::~ShadowLayerForwarder()
{
MOZ_ASSERT(mTxn->Finished(), "unfinished transaction?");
delete mTxn;
if (mShadowManager) {
mShadowManager->SetForwarder(nullptr);
if (NS_IsMainThread()) {
mShadowManager->Destroy();
} else {
if (mEventTarget) {
mEventTarget->Dispatch(
NewRunnableMethod("LayerTransactionChild::Destroy", mShadowManager,
&LayerTransactionChild::Destroy),
nsIEventTarget::DISPATCH_NORMAL);
} else {
NS_DispatchToMainThread(
NewRunnableMethod("layers::LayerTransactionChild::Destroy",
mShadowManager,
&LayerTransactionChild::Destroy));
}
}
}
if (!NS_IsMainThread()) {
RefPtr<ReleaseOnMainThreadTask<ActiveResourceTracker>> event =
new ReleaseOnMainThreadTask<ActiveResourceTracker>(mActiveResourceTracker);
if (mEventTarget) {
mEventTarget->Dispatch(event.forget(), nsIEventTarget::DISPATCH_NORMAL);
} else {
NS_DispatchToMainThread(event);
}
}
}
void
ShadowLayerForwarder::BeginTransaction(const gfx::IntRect& aTargetBounds,
ScreenRotation aRotation,
dom::ScreenOrientationInternal aOrientation)
{
MOZ_ASSERT(IPCOpen(), "no manager to forward to");
MOZ_ASSERT(mTxn->Finished(), "uncommitted txn?");
UpdateFwdTransactionId();
mTxn->Begin(aTargetBounds, aRotation, aOrientation);
}
static const LayerHandle&
Shadow(ShadowableLayer* aLayer)
{
return aLayer->GetShadow();
}
template<typename OpCreateT>
static void
CreatedLayer(Transaction* aTxn, ShadowableLayer* aLayer)
{
aTxn->AddEdit(OpCreateT(Shadow(aLayer)));
}
void
ShadowLayerForwarder::CreatedPaintedLayer(ShadowableLayer* aThebes)
{
CreatedLayer<OpCreatePaintedLayer>(mTxn, aThebes);
}
void
ShadowLayerForwarder::CreatedContainerLayer(ShadowableLayer* aContainer)
{
CreatedLayer<OpCreateContainerLayer>(mTxn, aContainer);
}
void
ShadowLayerForwarder::CreatedImageLayer(ShadowableLayer* aImage)
{
CreatedLayer<OpCreateImageLayer>(mTxn, aImage);
}
void
ShadowLayerForwarder::CreatedColorLayer(ShadowableLayer* aColor)
{
CreatedLayer<OpCreateColorLayer>(mTxn, aColor);
}
void
ShadowLayerForwarder::CreatedBorderLayer(ShadowableLayer* aBorder)
{
CreatedLayer<OpCreateBorderLayer>(mTxn, aBorder);
}
void
ShadowLayerForwarder::CreatedCanvasLayer(ShadowableLayer* aCanvas)
{
CreatedLayer<OpCreateCanvasLayer>(mTxn, aCanvas);
}
void
ShadowLayerForwarder::CreatedRefLayer(ShadowableLayer* aRef)
{
CreatedLayer<OpCreateRefLayer>(mTxn, aRef);
}
void
ShadowLayerForwarder::Mutated(ShadowableLayer* aMutant)
{
mTxn->AddMutant(aMutant);
}
void
ShadowLayerForwarder::MutatedSimple(ShadowableLayer* aMutant)
{
mTxn->AddSimpleMutant(aMutant);
}
void
ShadowLayerForwarder::SetRoot(ShadowableLayer* aRoot)
{
mTxn->AddEdit(OpSetRoot(Shadow(aRoot)));
}
void
ShadowLayerForwarder::InsertAfter(ShadowableLayer* aContainer,
ShadowableLayer* aChild,
ShadowableLayer* aAfter)
{
if (!aChild->HasShadow()) {
return;
}
while (aAfter && !aAfter->HasShadow()) {
aAfter = aAfter->AsLayer()->GetPrevSibling() ? aAfter->AsLayer()->GetPrevSibling()->AsShadowableLayer() : nullptr;
}
if (aAfter) {
mTxn->AddEdit(OpInsertAfter(Shadow(aContainer), Shadow(aChild), Shadow(aAfter)));
} else {
mTxn->AddEdit(OpPrependChild(Shadow(aContainer), Shadow(aChild)));
}
}
void
ShadowLayerForwarder::RemoveChild(ShadowableLayer* aContainer,
ShadowableLayer* aChild)
{
MOZ_LAYERS_LOG(("[LayersForwarder] OpRemoveChild container=%p child=%p\n",
aContainer->AsLayer(), aChild->AsLayer()));
if (!aChild->HasShadow()) {
return;
}
mTxn->AddEdit(OpRemoveChild(Shadow(aContainer), Shadow(aChild)));
}
void
ShadowLayerForwarder::RepositionChild(ShadowableLayer* aContainer,
ShadowableLayer* aChild,
ShadowableLayer* aAfter)
{
if (!aChild->HasShadow()) {
return;
}
while (aAfter && !aAfter->HasShadow()) {
aAfter = aAfter->AsLayer()->GetPrevSibling() ? aAfter->AsLayer()->GetPrevSibling()->AsShadowableLayer() : nullptr;
}
if (aAfter) {
MOZ_LAYERS_LOG(("[LayersForwarder] OpRepositionChild container=%p child=%p after=%p",
aContainer->AsLayer(), aChild->AsLayer(), aAfter->AsLayer()));
mTxn->AddEdit(OpRepositionChild(Shadow(aContainer), Shadow(aChild), Shadow(aAfter)));
} else {
MOZ_LAYERS_LOG(("[LayersForwarder] OpRaiseToTopChild container=%p child=%p",
aContainer->AsLayer(), aChild->AsLayer()));
mTxn->AddEdit(OpRaiseToTopChild(Shadow(aContainer), Shadow(aChild)));
}
}
#ifdef DEBUG
void
ShadowLayerForwarder::CheckSurfaceDescriptor(const SurfaceDescriptor* aDescriptor) const
{
if (!aDescriptor) {
return;
}
if (aDescriptor->type() == SurfaceDescriptor::TSurfaceDescriptorBuffer &&
aDescriptor->get_SurfaceDescriptorBuffer().data().type() == MemoryOrShmem::TShmem) {
const Shmem& shmem = aDescriptor->get_SurfaceDescriptorBuffer().data().get_Shmem();
shmem.AssertInvariants();
MOZ_ASSERT(mShadowManager &&
mShadowManager->IsTrackingSharedMemory(shmem.mSegment));
}
}
#endif
void
ShadowLayerForwarder::UseTiledLayerBuffer(CompositableClient* aCompositable,
const SurfaceDescriptorTiles& aTileLayerDescriptor)
{
MOZ_ASSERT(aCompositable);
if (!aCompositable->IsConnected()) {
return;
}
mTxn->AddNoSwapPaint(CompositableOperation(aCompositable->GetIPCHandle(),
OpUseTiledLayerBuffer(aTileLayerDescriptor)));
}
void
ShadowLayerForwarder::UpdateTextureRegion(CompositableClient* aCompositable,
const ThebesBufferData& aThebesBufferData,
const nsIntRegion& aUpdatedRegion)
{
MOZ_ASSERT(aCompositable);
if (!aCompositable->IsConnected()) {
return;
}
mTxn->AddNoSwapPaint(
CompositableOperation(
aCompositable->GetIPCHandle(),
OpPaintTextureRegion(aThebesBufferData, aUpdatedRegion)));
}
void
ShadowLayerForwarder::UseTextures(CompositableClient* aCompositable,
const nsTArray<TimedTextureClient>& aTextures)
{
MOZ_ASSERT(aCompositable);
if (!aCompositable->IsConnected()) {
return;
}
AutoTArray<TimedTexture,4> textures;
for (auto& t : aTextures) {
MOZ_ASSERT(t.mTextureClient);
MOZ_ASSERT(t.mTextureClient->GetIPDLActor());
MOZ_RELEASE_ASSERT(t.mTextureClient->GetIPDLActor()->GetIPCChannel() == mShadowManager->GetIPCChannel());
ReadLockDescriptor readLock;
ReadLockHandle readLockHandle;
if (t.mTextureClient->SerializeReadLock(readLock)) {
readLockHandle = mTxn->AddReadLock(readLock);
}
textures.AppendElement(TimedTexture(nullptr, t.mTextureClient->GetIPDLActor(),
readLockHandle,
t.mTimeStamp, t.mPictureRect,
t.mFrameID, t.mProducerID));
mClientLayerManager->GetCompositorBridgeChild()->HoldUntilCompositableRefReleasedIfNecessary(t.mTextureClient);
}
mTxn->AddEdit(CompositableOperation(aCompositable->GetIPCHandle(),
OpUseTexture(textures)));
}
void
ShadowLayerForwarder::UseComponentAlphaTextures(CompositableClient* aCompositable,
TextureClient* aTextureOnBlack,
TextureClient* aTextureOnWhite)
{
MOZ_ASSERT(aCompositable);
if (!aCompositable->IsConnected()) {
return;
}
MOZ_ASSERT(aTextureOnWhite);
MOZ_ASSERT(aTextureOnBlack);
MOZ_ASSERT(aCompositable->GetIPCHandle());
MOZ_ASSERT(aTextureOnBlack->GetIPDLActor());
MOZ_ASSERT(aTextureOnWhite->GetIPDLActor());
MOZ_ASSERT(aTextureOnBlack->GetSize() == aTextureOnWhite->GetSize());
MOZ_RELEASE_ASSERT(aTextureOnWhite->GetIPDLActor()->GetIPCChannel() == mShadowManager->GetIPCChannel());
MOZ_RELEASE_ASSERT(aTextureOnBlack->GetIPDLActor()->GetIPCChannel() == mShadowManager->GetIPCChannel());
ReadLockDescriptor readLockB;
ReadLockHandle readLockHandleB;
ReadLockDescriptor readLockW;
ReadLockHandle readLockHandleW;
if (aTextureOnBlack->SerializeReadLock(readLockB)) {
readLockHandleB = mTxn->AddReadLock(readLockB);
}
if (aTextureOnWhite->SerializeReadLock(readLockW)) {
readLockHandleW = mTxn->AddReadLock(readLockW);
}
mClientLayerManager->GetCompositorBridgeChild()->HoldUntilCompositableRefReleasedIfNecessary(aTextureOnBlack);
mClientLayerManager->GetCompositorBridgeChild()->HoldUntilCompositableRefReleasedIfNecessary(aTextureOnWhite);
mTxn->AddEdit(
CompositableOperation(
aCompositable->GetIPCHandle(),
OpUseComponentAlphaTextures(
nullptr, aTextureOnBlack->GetIPDLActor(),
nullptr, aTextureOnWhite->GetIPDLActor(),
readLockHandleB, readLockHandleW)
)
);
}
static bool
AddOpDestroy(Transaction* aTxn, const OpDestroy& op)
{
if (!aTxn->Opened()) {
return false;
}
aTxn->mDestroyedActors.AppendElement(op);
return true;
}
bool
ShadowLayerForwarder::DestroyInTransaction(PTextureChild* aTexture)
{
return AddOpDestroy(mTxn, OpDestroy(aTexture));
}
bool
ShadowLayerForwarder::DestroyInTransaction(const CompositableHandle& aHandle)
{
return AddOpDestroy(mTxn, OpDestroy(aHandle));
}
void
ShadowLayerForwarder::RemoveTextureFromCompositable(CompositableClient* aCompositable,
TextureClient* aTexture)
{
MOZ_ASSERT(aCompositable);
MOZ_ASSERT(aTexture);
MOZ_ASSERT(aTexture->GetIPDLActor());
MOZ_RELEASE_ASSERT(aTexture->GetIPDLActor()->GetIPCChannel() == mShadowManager->GetIPCChannel());
if (!aCompositable->IsConnected() || !aTexture->GetIPDLActor()) {
// We don't have an actor anymore, don't try to use it!
return;
}
mTxn->AddEdit(
CompositableOperation(
aCompositable->GetIPCHandle(),
OpRemoveTexture(nullptr, aTexture->GetIPDLActor())));
}
bool
ShadowLayerForwarder::InWorkerThread()
{
return MessageLoop::current() && (GetTextureForwarder()->GetMessageLoop()->id() == MessageLoop::current()->id());
}
void
ShadowLayerForwarder::StorePluginWidgetConfigurations(const nsTArray<nsIWidget::Configuration>&
aConfigurations)
{
// Cache new plugin widget configs here until we call update, at which
// point this data will get shipped over to chrome.
mPluginWindowData.Clear();
for (uint32_t idx = 0; idx < aConfigurations.Length(); idx++) {
const nsIWidget::Configuration& configuration = aConfigurations[idx];
mPluginWindowData.AppendElement(PluginWindowData(configuration.mWindowID,
configuration.mClipRegion,
configuration.mBounds,
configuration.mVisible));
}
}
void
ShadowLayerForwarder::SendPaintTime(uint64_t aId, TimeDuration aPaintTime)
{
if (!IPCOpen() ||
!mShadowManager->SendPaintTime(aId, aPaintTime)) {
NS_WARNING("Could not send paint times over IPC");
}
}
bool
ShadowLayerForwarder::EndTransaction(const nsIntRegion& aRegionToClear,
uint64_t aId,
bool aScheduleComposite,
uint32_t aPaintSequenceNumber,
bool aIsRepeatTransaction,
const mozilla::TimeStamp& aTransactionStart,
bool* aSent)
{
*aSent = false;
TransactionInfo info;
MOZ_ASSERT(IPCOpen(), "no manager to forward to");
if (!IPCOpen()) {
return false;
}
Maybe<TimeStamp> startTime;
if (gfxPrefs::LayersDrawFPS()) {
startTime = Some(TimeStamp::Now());
}
GetCompositorBridgeChild()->WillEndTransaction();
MOZ_ASSERT(aId);
AUTO_PROFILER_LABEL("ShadowLayerForwarder::EndTransaction", GRAPHICS);
RenderTraceScope rendertrace("Foward Transaction", "000091");
MOZ_ASSERT(!mTxn->Finished(), "forgot BeginTransaction?");
DiagnosticTypes diagnostics = gfxPlatform::GetPlatform()->GetLayerDiagnosticTypes();
if (mDiagnosticTypes != diagnostics) {
mDiagnosticTypes = diagnostics;
mTxn->AddEdit(OpSetDiagnosticTypes(diagnostics));
}
if (mWindowOverlayChanged) {
mTxn->AddEdit(OpWindowOverlayChanged());
}
AutoTxnEnd _(mTxn);
if (mTxn->Empty() && !mTxn->RotationChanged()) {
MOZ_LAYERS_LOG(("[LayersForwarder] 0-length cset (?) and no rotation event, skipping Update()"));
return true;
}
if (!mTxn->mPaints.IsEmpty()) {
// With some platforms, telling the drawing backend that there will be no more
// drawing for this frame helps with preventing command queues from spanning
// across multiple frames.
gfxPlatform::GetPlatform()->FlushContentDrawing();
}
MOZ_LAYERS_LOG(("[LayersForwarder] destroying buffers..."));
MOZ_LAYERS_LOG(("[LayersForwarder] building transaction..."));
nsTArray<OpSetSimpleLayerAttributes> setSimpleAttrs;
for (ShadowableLayerSet::Iterator it(&mTxn->mSimpleMutants); !it.Done(); it.Next()) {
ShadowableLayer* shadow = it.Get()->GetKey();
if (!shadow->HasShadow()) {
continue;
}
Layer* mutant = shadow->AsLayer();
setSimpleAttrs.AppendElement(OpSetSimpleLayerAttributes(
Shadow(shadow),
mutant->GetSimpleAttributes()));
}
nsTArray<OpSetLayerAttributes> setAttrs;
// We purposely add attribute-change ops to the final changeset
// before we add paint ops. This allows layers to record the
// attribute changes before new pixels arrive, which can be useful
// for setting up back/front buffers.
RenderTraceScope rendertrace2("Foward Transaction", "000092");
for (ShadowableLayerSet::Iterator it(&mTxn->mMutants);
!it.Done(); it.Next()) {
ShadowableLayer* shadow = it.Get()->GetKey();
if (!shadow->HasShadow()) {
continue;
}
Layer* mutant = shadow->AsLayer();
MOZ_ASSERT(!!mutant, "unshadowable layer?");
OpSetLayerAttributes op;
op.layer() = Shadow(shadow);
LayerAttributes& attrs = op.attrs();
CommonLayerAttributes& common = attrs.common();
common.visibleRegion() = mutant->GetVisibleRegion();
common.eventRegions() = mutant->GetEventRegions();
common.useClipRect() = !!mutant->GetClipRect();
common.clipRect() = (common.useClipRect() ?
*mutant->GetClipRect() : ParentLayerIntRect());
if (Layer* maskLayer = mutant->GetMaskLayer()) {
common.maskLayer() = Shadow(maskLayer->AsShadowableLayer());
} else {
common.maskLayer() = LayerHandle();
}
common.compositorAnimations().id() = mutant->GetCompositorAnimationsId();
common.compositorAnimations().animations() = mutant->GetAnimations();
common.invalidRegion() = mutant->GetInvalidRegion().GetRegion();
common.scrollMetadata() = mutant->GetAllScrollMetadata();
for (size_t i = 0; i < mutant->GetAncestorMaskLayerCount(); i++) {
auto layer = Shadow(mutant->GetAncestorMaskLayerAt(i)->AsShadowableLayer());
common.ancestorMaskLayers().AppendElement(layer);
}
nsCString log;
mutant->GetDisplayListLog(log);
common.displayListLog() = log;
attrs.specific() = null_t();
mutant->FillSpecificAttributes(attrs.specific());
MOZ_LAYERS_LOG(("[LayersForwarder] OpSetLayerAttributes(%p)\n", mutant));
setAttrs.AppendElement(op);
}
if (mTxn->mCset.IsEmpty() &&
mTxn->mPaints.IsEmpty() &&
setAttrs.IsEmpty() &&
!mTxn->RotationChanged())
{
return true;
}
mWindowOverlayChanged = false;
info.cset() = Move(mTxn->mCset);
info.setSimpleAttrs() = Move(setSimpleAttrs);
info.setAttrs() = Move(setAttrs);
info.paints() = Move(mTxn->mPaints);
info.toDestroy() = mTxn->mDestroyedActors;
info.fwdTransactionId() = GetFwdTransactionId();
info.id() = aId;
info.plugins() = mPluginWindowData;
info.isFirstPaint() = mIsFirstPaint;
info.focusTarget() = mFocusTarget;
info.scheduleComposite() = aScheduleComposite;
info.paintSequenceNumber() = aPaintSequenceNumber;
info.isRepeatTransaction() = aIsRepeatTransaction;
info.transactionStart() = aTransactionStart;
#if defined(ENABLE_FRAME_LATENCY_LOG)
info.fwdTime() = TimeStamp::Now();
#endif
TargetConfig targetConfig(mTxn->mTargetBounds,
mTxn->mTargetRotation,
mTxn->mTargetOrientation,
aRegionToClear);
info.targetConfig() = targetConfig;
if (!GetTextureForwarder()->IsSameProcess()) {
MOZ_LAYERS_LOG(("[LayersForwarder] syncing before send..."));
PlatformSyncBeforeUpdate();
}
if (startTime) {
mPaintTiming.serializeMs() = (TimeStamp::Now() - startTime.value()).ToMilliseconds();
startTime = Some(TimeStamp::Now());
}
for (ReadLockVector& locks : mTxn->mReadLocks) {
if (locks.Length()) {
if (!mShadowManager->SendInitReadLocks(locks)) {
MOZ_LAYERS_LOG(("[LayersForwarder] WARNING: sending read locks failed!"));
return false;
}
}
}
// We delay at the last possible minute, to give the paint thread a chance to
// finish. If it does we don't have to delay messages at all.
GetCompositorBridgeChild()->PostponeMessagesIfAsyncPainting();
MOZ_LAYERS_LOG(("[LayersForwarder] sending transaction..."));
RenderTraceScope rendertrace3("Forward Transaction", "000093");
if (!mShadowManager->SendUpdate(info)) {
MOZ_LAYERS_LOG(("[LayersForwarder] WARNING: sending transaction failed!"));
return false;
}
if (startTime) {
mPaintTiming.sendMs() = (TimeStamp::Now() - startTime.value()).ToMilliseconds();
mShadowManager->SendRecordPaintTimes(mPaintTiming);
}
*aSent = true;
mIsFirstPaint = false;
mFocusTarget = FocusTarget();
MOZ_LAYERS_LOG(("[LayersForwarder] ... done"));
return true;
}
RefPtr<CompositableClient>
ShadowLayerForwarder::FindCompositable(const CompositableHandle& aHandle)
{
CompositableClient* client = nullptr;
if (!mCompositables.Get(aHandle.Value(), &client)) {
return nullptr;
}
return client;
}
void
ShadowLayerForwarder::SetLayerObserverEpoch(uint64_t aLayerObserverEpoch)
{
if (!IPCOpen()) {
return;
}
Unused << mShadowManager->SendSetLayerObserverEpoch(aLayerObserverEpoch);
}
void
ShadowLayerForwarder::ReleaseLayer(const LayerHandle& aHandle)
{
if (!IPCOpen()) {
return;
}
Unused << mShadowManager->SendReleaseLayer(aHandle);
}
bool
ShadowLayerForwarder::IPCOpen() const
{
return HasShadowManager() && mShadowManager->IPCOpen();
}
/**
* We bail out when we have no shadow manager. That can happen when the
* layer manager is created by the preallocated process.
* See bug 914843 for details.
*/
LayerHandle
ShadowLayerForwarder::ConstructShadowFor(ShadowableLayer* aLayer)
{
return LayerHandle(mNextLayerHandle++);
}
#if !defined(MOZ_HAVE_PLATFORM_SPECIFIC_LAYER_BUFFERS)
/*static*/ void
ShadowLayerForwarder::PlatformSyncBeforeUpdate()
{
}
#endif // !defined(MOZ_HAVE_PLATFORM_SPECIFIC_LAYER_BUFFERS)
void
ShadowLayerForwarder::Connect(CompositableClient* aCompositable,
ImageContainer* aImageContainer)
{
#ifdef GFX_COMPOSITOR_LOGGING
printf("ShadowLayerForwarder::Connect(Compositable)\n");
#endif
MOZ_ASSERT(aCompositable);
MOZ_ASSERT(mShadowManager);
if (!IPCOpen()) {
return;
}
static uint64_t sNextID = 1;
uint64_t id = sNextID++;
mCompositables.Put(id, aCompositable);
CompositableHandle handle(id);
aCompositable->InitIPDL(handle);
mShadowManager->SendNewCompositable(handle, aCompositable->GetTextureInfo());
}
void ShadowLayerForwarder::Attach(CompositableClient* aCompositable,
ShadowableLayer* aLayer)
{
MOZ_ASSERT(aLayer);
MOZ_ASSERT(aCompositable);
mTxn->AddEdit(OpAttachCompositable(Shadow(aLayer), aCompositable->GetIPCHandle()));
}
void ShadowLayerForwarder::AttachAsyncCompositable(const CompositableHandle& aHandle,
ShadowableLayer* aLayer)
{
MOZ_ASSERT(aLayer);
MOZ_ASSERT(aHandle);
mTxn->AddEdit(OpAttachAsyncCompositable(Shadow(aLayer), aHandle));
}
void ShadowLayerForwarder::SetShadowManager(PLayerTransactionChild* aShadowManager)
{
mShadowManager = static_cast<LayerTransactionChild*>(aShadowManager);
mShadowManager->SetForwarder(this);
}
void ShadowLayerForwarder::StopReceiveAsyncParentMessge()
{
if (!IPCOpen()) {
return;
}
mShadowManager->SetForwarder(nullptr);
}
void ShadowLayerForwarder::ClearCachedResources()
{
if (!IPCOpen()) {
return;
}
mShadowManager->SendClearCachedResources();
}
void ShadowLayerForwarder::Composite()
{
if (!IPCOpen()) {
return;
}
mShadowManager->SendForceComposite();
}
bool
IsSurfaceDescriptorValid(const SurfaceDescriptor& aSurface)
{
return aSurface.type() != SurfaceDescriptor::T__None &&
aSurface.type() != SurfaceDescriptor::Tnull_t;
}
uint8_t*
GetAddressFromDescriptor(const SurfaceDescriptor& aDescriptor)
{
MOZ_ASSERT(IsSurfaceDescriptorValid(aDescriptor));
MOZ_RELEASE_ASSERT(aDescriptor.type() == SurfaceDescriptor::TSurfaceDescriptorBuffer, "GFX: surface descriptor is not the right type.");
auto memOrShmem = aDescriptor.get_SurfaceDescriptorBuffer().data();
if (memOrShmem.type() == MemoryOrShmem::TShmem) {
return memOrShmem.get_Shmem().get<uint8_t>();
} else {
return reinterpret_cast<uint8_t*>(memOrShmem.get_uintptr_t());
}
}
already_AddRefed<gfx::DataSourceSurface>
GetSurfaceForDescriptor(const SurfaceDescriptor& aDescriptor)
{
if (aDescriptor.type() != SurfaceDescriptor::TSurfaceDescriptorBuffer) {
return nullptr;
}
uint8_t* data = GetAddressFromDescriptor(aDescriptor);
auto rgb = aDescriptor.get_SurfaceDescriptorBuffer().desc().get_RGBDescriptor();
uint32_t stride = ImageDataSerializer::GetRGBStride(rgb);
return gfx::Factory::CreateWrappingDataSourceSurface(data, stride, rgb.size(),
rgb.format());
}
already_AddRefed<gfx::DrawTarget>
GetDrawTargetForDescriptor(const SurfaceDescriptor& aDescriptor, gfx::BackendType aBackend)
{
uint8_t* data = GetAddressFromDescriptor(aDescriptor);
auto rgb = aDescriptor.get_SurfaceDescriptorBuffer().desc().get_RGBDescriptor();
uint32_t stride = ImageDataSerializer::GetRGBStride(rgb);
return gfx::Factory::CreateDrawTargetForData(gfx::BackendType::CAIRO,
data, rgb.size(),
stride, rgb.format());
}
void
DestroySurfaceDescriptor(IShmemAllocator* aAllocator, SurfaceDescriptor* aSurface)
{
MOZ_ASSERT(aSurface);
SurfaceDescriptorBuffer& desc = aSurface->get_SurfaceDescriptorBuffer();
switch (desc.data().type()) {
case MemoryOrShmem::TShmem: {
aAllocator->DeallocShmem(desc.data().get_Shmem());
break;
}
case MemoryOrShmem::Tuintptr_t: {
uint8_t* ptr = (uint8_t*)desc.data().get_uintptr_t();
GfxMemoryImageReporter::WillFree(ptr);
delete [] ptr;
break;
}
default:
MOZ_CRASH("surface type not implemented!");
}
*aSurface = SurfaceDescriptor();
}
bool
ShadowLayerForwarder::AllocSurfaceDescriptor(const gfx::IntSize& aSize,
gfxContentType aContent,
SurfaceDescriptor* aBuffer)
{
if (!IPCOpen()) {
return false;
}
return AllocSurfaceDescriptorWithCaps(aSize, aContent, DEFAULT_BUFFER_CAPS, aBuffer);
}
bool
ShadowLayerForwarder::AllocSurfaceDescriptorWithCaps(const gfx::IntSize& aSize,
gfxContentType aContent,
uint32_t aCaps,
SurfaceDescriptor* aBuffer)
{
if (!IPCOpen()) {
return false;
}
gfx::SurfaceFormat format =
gfxPlatform::GetPlatform()->Optimal2DFormatForContent(aContent);
size_t size = ImageDataSerializer::ComputeRGBBufferSize(aSize, format);
if (!size) {
return false;
}
MemoryOrShmem bufferDesc;
if (GetTextureForwarder()->IsSameProcess()) {
uint8_t* data = new (std::nothrow) uint8_t[size];
if (!data) {
return false;
}
GfxMemoryImageReporter::DidAlloc(data);
memset(data, 0, size);
bufferDesc = reinterpret_cast<uintptr_t>(data);
} else {
mozilla::ipc::Shmem shmem;
if (!GetTextureForwarder()->AllocUnsafeShmem(size, OptimalShmemType(), &shmem)) {
return false;
}
bufferDesc = shmem;
}
// Use an intermediate buffer by default. Skipping the intermediate buffer is
// only possible in certain configurations so let's keep it simple here for now.
const bool hasIntermediateBuffer = true;
*aBuffer = SurfaceDescriptorBuffer(RGBDescriptor(aSize, format, hasIntermediateBuffer),
bufferDesc);
return true;
}
/* static */ bool
ShadowLayerForwarder::IsShmem(SurfaceDescriptor* aSurface)
{
return aSurface && (aSurface->type() == SurfaceDescriptor::TSurfaceDescriptorBuffer)
&& (aSurface->get_SurfaceDescriptorBuffer().data().type() == MemoryOrShmem::TShmem);
}
void
ShadowLayerForwarder::DestroySurfaceDescriptor(SurfaceDescriptor* aSurface)
{
MOZ_ASSERT(aSurface);
MOZ_ASSERT(IPCOpen());
if (!IPCOpen() || !aSurface) {
return;
}
::mozilla::layers::DestroySurfaceDescriptor(GetTextureForwarder(), aSurface);
}
void
ShadowLayerForwarder::UpdateFwdTransactionId()
{
auto compositorBridge = GetCompositorBridgeChild();
if (compositorBridge) {
compositorBridge->UpdateFwdTransactionId();
}
}
uint64_t
ShadowLayerForwarder::GetFwdTransactionId()
{
auto compositorBridge = GetCompositorBridgeChild();
MOZ_DIAGNOSTIC_ASSERT(compositorBridge);
return compositorBridge ? compositorBridge->GetFwdTransactionId() : 0;
}
CompositorBridgeChild*
ShadowLayerForwarder::GetCompositorBridgeChild()
{
if (mCompositorBridgeChild) {
return mCompositorBridgeChild;
}
if (!mShadowManager) {
return nullptr;
}
mCompositorBridgeChild = static_cast<CompositorBridgeChild*>(mShadowManager->Manager());
return mCompositorBridgeChild;
}
void
ShadowLayerForwarder::SyncWithCompositor()
{
auto compositorBridge = GetCompositorBridgeChild();
if (compositorBridge && compositorBridge->IPCOpen()) {
compositorBridge->SendSyncWithCompositor();
}
}
void
ShadowLayerForwarder::ReleaseCompositable(const CompositableHandle& aHandle)
{
AssertInForwarderThread();
if (!DestroyInTransaction(aHandle)) {
if (!IPCOpen()) {
return;
}
mShadowManager->SendReleaseCompositable(aHandle);
}
mCompositables.Remove(aHandle.Value());
}
void
ShadowLayerForwarder::SynchronouslyShutdown()
{
if (IPCOpen()) {
mShadowManager->SendShutdownSync();
mShadowManager->MarkDestroyed();
}
}
ShadowableLayer::~ShadowableLayer()
{
if (mShadow) {
mForwarder->ReleaseLayer(GetShadow());
}
}
} // namespace layers
} // namespace mozilla
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