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

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
/* 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 "LayerTransactionParent.h"
#include <vector> // for vector
#include "apz/src/AsyncPanZoomController.h"
#include "CompositableHost.h" // for CompositableParent, Get, etc
#include "ImageLayers.h" // for ImageLayer
#include "Layers.h" // for Layer, ContainerLayer, etc
#include "ShadowLayerParent.h" // for ShadowLayerParent
#include "CompositableTransactionParent.h" // for EditReplyVector
#include "CompositorBridgeParent.h"
#include "gfxPrefs.h"
#include "mozilla/gfx/BasePoint3D.h" // for BasePoint3D
#include "mozilla/layers/CanvasLayerComposite.h"
#include "mozilla/layers/ColorLayerComposite.h"
#include "mozilla/layers/Compositor.h" // for Compositor
#include "mozilla/layers/ContainerLayerComposite.h"
#include "mozilla/layers/ImageBridgeParent.h" // for ImageBridgeParent
#include "mozilla/layers/ImageLayerComposite.h"
#include "mozilla/layers/LayerManagerComposite.h"
#include "mozilla/layers/LayersMessages.h" // for EditReply, etc
#include "mozilla/layers/LayersSurfaces.h" // for PGrallocBufferParent
#include "mozilla/layers/LayersTypes.h" // for MOZ_LAYERS_LOG
#include "mozilla/layers/PCompositableParent.h"
#include "mozilla/layers/PLayerParent.h" // for PLayerParent
#include "mozilla/layers/TextureHostOGL.h" // for TextureHostOGL
#include "mozilla/layers/PaintedLayerComposite.h"
#include "mozilla/mozalloc.h" // for operator delete, etc
#include "mozilla/Unused.h"
#include "nsCoord.h" // for NSAppUnitsToFloatPixels
#include "nsDebug.h" // for NS_RUNTIMEABORT
#include "nsDeviceContext.h" // for AppUnitsPerCSSPixel
#include "nsISupportsImpl.h" // for Layer::Release, etc
#include "nsLayoutUtils.h" // for nsLayoutUtils
#include "nsMathUtils.h" // for NS_round
#include "nsPoint.h" // for nsPoint
#include "nsTArray.h" // for nsTArray, nsTArray_Impl, etc
#include "TreeTraversal.h" // for ForEachNode
#include "GeckoProfiler.h"
#include "mozilla/layers/TextureHost.h"
#include "mozilla/layers/AsyncCompositionManager.h"
typedef std::vector<mozilla::layers::EditReply> EditReplyVector;
using mozilla::layout::RenderFrameParent;
namespace mozilla {
namespace layers {
class PGrallocBufferParent;
//--------------------------------------------------
// Convenience accessors
static ShadowLayerParent*
cast(const PLayerParent* in)
{
return const_cast<ShadowLayerParent*>(
static_cast<const ShadowLayerParent*>(in));
}
template<class OpCreateT>
static ShadowLayerParent*
AsLayerComposite(const OpCreateT& op)
{
return cast(op.layerParent());
}
static ShadowLayerParent*
AsLayerComposite(const OpSetRoot& op)
{
return cast(op.rootParent());
}
static ShadowLayerParent*
ShadowContainer(const OpInsertAfter& op)
{
return cast(op.containerParent());
}
static ShadowLayerParent*
ShadowChild(const OpInsertAfter& op)
{
return cast(op.childLayerParent());
}
static ShadowLayerParent*
ShadowAfter(const OpInsertAfter& op)
{
return cast(op.afterParent());
}
static ShadowLayerParent*
ShadowContainer(const OpPrependChild& op)
{
return cast(op.containerParent());
}
static ShadowLayerParent*
ShadowChild(const OpPrependChild& op)
{
return cast(op.childLayerParent());
}
static ShadowLayerParent*
ShadowContainer(const OpRemoveChild& op)
{
return cast(op.containerParent());
}
static ShadowLayerParent*
ShadowChild(const OpRemoveChild& op)
{
return cast(op.childLayerParent());
}
static ShadowLayerParent*
ShadowContainer(const OpRepositionChild& op)
{
return cast(op.containerParent());
}
static ShadowLayerParent*
ShadowChild(const OpRepositionChild& op)
{
return cast(op.childLayerParent());
}
static ShadowLayerParent*
ShadowAfter(const OpRepositionChild& op)
{
return cast(op.afterParent());
}
static ShadowLayerParent*
ShadowContainer(const OpRaiseToTopChild& op)
{
return cast(op.containerParent());
}
static ShadowLayerParent*
ShadowChild(const OpRaiseToTopChild& op)
{
return cast(op.childLayerParent());
}
//--------------------------------------------------
// LayerTransactionParent
LayerTransactionParent::LayerTransactionParent(LayerManagerComposite* aManager,
CompositorBridgeParentBase* aBridge,
uint64_t aId)
: mLayerManager(aManager)
, mCompositorBridge(aBridge)
, mId(aId)
, mChildEpoch(0)
, mParentEpoch(0)
, mPendingTransaction(0)
, mPendingCompositorUpdates(0)
, mDestroyed(false)
, mIPCOpen(false)
{
}
LayerTransactionParent::~LayerTransactionParent()
{
}
bool
LayerTransactionParent::RecvShutdown()
{
Destroy();
return Send__delete__(this);
}
void
LayerTransactionParent::Destroy()
{
const ManagedContainer<PLayerParent>& layers = ManagedPLayerParent();
for (auto iter = layers.ConstIter(); !iter.Done(); iter.Next()) {
ShadowLayerParent* slp =
static_cast<ShadowLayerParent*>(iter.Get()->GetKey());
slp->Destroy();
}
mDestroyed = true;
}
bool
LayerTransactionParent::RecvUpdateNoSwap(InfallibleTArray<Edit>&& cset,
InfallibleTArray<OpDestroy>&& aToDestroy,
const uint64_t& aFwdTransactionId,
const uint64_t& aTransactionId,
const TargetConfig& targetConfig,
PluginsArray&& aPlugins,
const bool& isFirstPaint,
const bool& scheduleComposite,
const uint32_t& paintSequenceNumber,
const bool& isRepeatTransaction,
const mozilla::TimeStamp& aTransactionStart,
const int32_t& aPaintSyncId)
{
return RecvUpdate(Move(cset), Move(aToDestroy), aFwdTransactionId,
aTransactionId, targetConfig, Move(aPlugins), isFirstPaint,
scheduleComposite, paintSequenceNumber, isRepeatTransaction,
aTransactionStart, aPaintSyncId, nullptr);
}
class MOZ_STACK_CLASS AutoLayerTransactionParentAsyncMessageSender
{
public:
explicit AutoLayerTransactionParentAsyncMessageSender(LayerTransactionParent* aLayerTransaction,
InfallibleTArray<OpDestroy>* aDestroyActors = nullptr)
: mLayerTransaction(aLayerTransaction)
, mActorsToDestroy(aDestroyActors)
{
mLayerTransaction->SetAboutToSendAsyncMessages();
ImageBridgeParent::SetAboutToSendAsyncMessages(mLayerTransaction->GetChildProcessId());
}
~AutoLayerTransactionParentAsyncMessageSender()
{
mLayerTransaction->SendPendingAsyncMessages();
ImageBridgeParent::SendPendingAsyncMessages(mLayerTransaction->GetChildProcessId());
if (mActorsToDestroy) {
// Destroy the actors after sending the async messages because the latter may contain
// references to some actors.
for (const auto& op : *mActorsToDestroy) {
mLayerTransaction->DestroyActor(op);
}
}
}
private:
LayerTransactionParent* mLayerTransaction;
InfallibleTArray<OpDestroy>* mActorsToDestroy;
};
bool
LayerTransactionParent::RecvPaintTime(const uint64_t& aTransactionId,
const TimeDuration& aPaintTime)
{
mCompositorBridge->UpdatePaintTime(this, aPaintTime);
return true;
}
bool
LayerTransactionParent::RecvUpdate(InfallibleTArray<Edit>&& cset,
InfallibleTArray<OpDestroy>&& aToDestroy,
const uint64_t& aFwdTransactionId,
const uint64_t& aTransactionId,
const TargetConfig& targetConfig,
PluginsArray&& aPlugins,
const bool& isFirstPaint,
const bool& scheduleComposite,
const uint32_t& paintSequenceNumber,
const bool& isRepeatTransaction,
const mozilla::TimeStamp& aTransactionStart,
const int32_t& aPaintSyncId,
InfallibleTArray<EditReply>* reply)
{
profiler_tracing("Paint", "LayerTransaction", TRACING_INTERVAL_START);
PROFILER_LABEL("LayerTransactionParent", "RecvUpdate",
js::ProfileEntry::Category::GRAPHICS);
#ifdef COMPOSITOR_PERFORMANCE_WARNING
TimeStamp updateStart = TimeStamp::Now();
#endif
MOZ_LAYERS_LOG(("[ParentSide] received txn with %d edits", cset.Length()));
UpdateFwdTransactionId(aFwdTransactionId);
if (mDestroyed || !layer_manager() || layer_manager()->IsDestroyed()) {
for (const auto& op : aToDestroy) {
DestroyActor(op);
}
return true;
}
// This ensures that destroy operations are always processed. It is not safe
// to early-return from RecvUpdate without doing so.
AutoLayerTransactionParentAsyncMessageSender autoAsyncMessageSender(this, &aToDestroy);
EditReplyVector replyv;
{
AutoResolveRefLayers resolve(mCompositorBridge->GetCompositionManager(this));
layer_manager()->BeginTransaction();
}
// not all edits require an update to the hit testing tree
bool updateHitTestingTree = false;
for (EditArray::index_type i = 0; i < cset.Length(); ++i) {
const Edit& edit = cset[i];
switch (edit.type()) {
// Create* ops
case Edit::TOpCreatePaintedLayer: {
MOZ_LAYERS_LOG(("[ParentSide] CreatePaintedLayer"));
RefPtr<PaintedLayerComposite> layer =
layer_manager()->CreatePaintedLayerComposite();
AsLayerComposite(edit.get_OpCreatePaintedLayer())->Bind(layer);
updateHitTestingTree = true;
break;
}
case Edit::TOpCreateContainerLayer: {
MOZ_LAYERS_LOG(("[ParentSide] CreateContainerLayer"));
RefPtr<ContainerLayer> layer = layer_manager()->CreateContainerLayerComposite();
AsLayerComposite(edit.get_OpCreateContainerLayer())->Bind(layer);
updateHitTestingTree = true;
break;
}
case Edit::TOpCreateImageLayer: {
MOZ_LAYERS_LOG(("[ParentSide] CreateImageLayer"));
RefPtr<ImageLayerComposite> layer =
layer_manager()->CreateImageLayerComposite();
AsLayerComposite(edit.get_OpCreateImageLayer())->Bind(layer);
updateHitTestingTree = true;
break;
}
case Edit::TOpCreateColorLayer: {
MOZ_LAYERS_LOG(("[ParentSide] CreateColorLayer"));
RefPtr<ColorLayerComposite> layer = layer_manager()->CreateColorLayerComposite();
AsLayerComposite(edit.get_OpCreateColorLayer())->Bind(layer);
updateHitTestingTree = true;
break;
}
case Edit::TOpCreateCanvasLayer: {
MOZ_LAYERS_LOG(("[ParentSide] CreateCanvasLayer"));
RefPtr<CanvasLayerComposite> layer =
layer_manager()->CreateCanvasLayerComposite();
AsLayerComposite(edit.get_OpCreateCanvasLayer())->Bind(layer);
updateHitTestingTree = true;
break;
}
case Edit::TOpCreateRefLayer: {
MOZ_LAYERS_LOG(("[ParentSide] CreateRefLayer"));
RefPtr<RefLayerComposite> layer =
layer_manager()->CreateRefLayerComposite();
AsLayerComposite(edit.get_OpCreateRefLayer())->Bind(layer);
updateHitTestingTree = true;
break;
}
// Attributes
case Edit::TOpSetLayerAttributes: {
MOZ_LAYERS_LOG(("[ParentSide] SetLayerAttributes"));
const OpSetLayerAttributes& osla = edit.get_OpSetLayerAttributes();
ShadowLayerParent* layerParent = AsLayerComposite(osla);
Layer* layer = layerParent->AsLayer();
if (!layer) {
return false;
}
const LayerAttributes& attrs = osla.attrs();
const CommonLayerAttributes& common = attrs.common();
layer->SetLayerBounds(common.layerBounds());
layer->SetVisibleRegion(common.visibleRegion());
layer->SetEventRegions(common.eventRegions());
layer->SetContentFlags(common.contentFlags());
layer->SetOpacity(common.opacity());
layer->SetClipRect(common.useClipRect() ? Some(common.clipRect()) : Nothing());
layer->SetScrolledClip(common.scrolledClip());
layer->SetBaseTransform(common.transform().value());
layer->SetTransformIsPerspective(common.transformIsPerspective());
layer->SetPostScale(common.postXScale(), common.postYScale());
layer->SetIsFixedPosition(common.isFixedPosition());
if (common.isFixedPosition()) {
layer->SetFixedPositionData(common.fixedPositionScrollContainerId(),
common.fixedPositionAnchor(),
common.fixedPositionSides());
}
if (common.isStickyPosition()) {
layer->SetStickyPositionData(common.stickyScrollContainerId(),
common.stickyScrollRangeOuter(),
common.stickyScrollRangeInner());
}
layer->SetScrollbarData(common.scrollbarTargetContainerId(),
static_cast<Layer::ScrollDirection>(common.scrollbarDirection()),
common.scrollbarThumbRatio());
if (common.isScrollbarContainer()) {
layer->SetIsScrollbarContainer();
}
layer->SetMixBlendMode((gfx::CompositionOp)common.mixBlendMode());
layer->SetForceIsolatedGroup(common.forceIsolatedGroup());
if (PLayerParent* maskLayer = common.maskLayerParent()) {
layer->SetMaskLayer(cast(maskLayer)->AsLayer());
} else {
layer->SetMaskLayer(nullptr);
}
layer->SetAnimations(common.animations());
layer->SetScrollMetadata(common.scrollMetadata());
layer->SetDisplayListLog(common.displayListLog().get());
// The updated invalid region is added to the existing one, since we can
// update multiple times before the next composite.
layer->AddInvalidRegion(common.invalidRegion());
nsTArray<RefPtr<Layer>> maskLayers;
for (size_t i = 0; i < common.ancestorMaskLayersParent().Length(); i++) {
Layer* maskLayer = cast(common.ancestorMaskLayersParent().ElementAt(i))->AsLayer();
maskLayers.AppendElement(maskLayer);
}
layer->SetAncestorMaskLayers(maskLayers);
typedef SpecificLayerAttributes Specific;
const SpecificLayerAttributes& specific = attrs.specific();
switch (specific.type()) {
case Specific::Tnull_t:
break;
case Specific::TPaintedLayerAttributes: {
MOZ_LAYERS_LOG(("[ParentSide] painted layer"));
PaintedLayerComposite* paintedLayer = layerParent->AsPaintedLayerComposite();
if (!paintedLayer) {
return false;
}
const PaintedLayerAttributes& attrs =
specific.get_PaintedLayerAttributes();
paintedLayer->SetValidRegion(attrs.validRegion());
break;
}
case Specific::TContainerLayerAttributes: {
MOZ_LAYERS_LOG(("[ParentSide] container layer"));
ContainerLayerComposite* containerLayer = layerParent->AsContainerLayerComposite();
if (!containerLayer) {
return false;
}
const ContainerLayerAttributes& attrs =
specific.get_ContainerLayerAttributes();
containerLayer->SetPreScale(attrs.preXScale(), attrs.preYScale());
containerLayer->SetInheritedScale(attrs.inheritedXScale(), attrs.inheritedYScale());
containerLayer->SetScaleToResolution(attrs.scaleToResolution(),
attrs.presShellResolution());
containerLayer->SetEventRegionsOverride(attrs.eventRegionsOverride());
break;
}
case Specific::TColorLayerAttributes: {
MOZ_LAYERS_LOG(("[ParentSide] color layer"));
ColorLayerComposite* colorLayer = layerParent->AsColorLayerComposite();
if (!colorLayer) {
return false;
}
colorLayer->SetColor(specific.get_ColorLayerAttributes().color().value());
colorLayer->SetBounds(specific.get_ColorLayerAttributes().bounds());
break;
}
case Specific::TCanvasLayerAttributes: {
MOZ_LAYERS_LOG(("[ParentSide] canvas layer"));
CanvasLayerComposite* canvasLayer = layerParent->AsCanvasLayerComposite();
if (!canvasLayer) {
return false;
}
canvasLayer->SetSamplingFilter(specific.get_CanvasLayerAttributes().samplingFilter());
canvasLayer->SetBounds(specific.get_CanvasLayerAttributes().bounds());
break;
}
case Specific::TRefLayerAttributes: {
MOZ_LAYERS_LOG(("[ParentSide] ref layer"));
RefLayerComposite* refLayer = layerParent->AsRefLayerComposite();
if (!refLayer) {
return false;
}
refLayer->SetReferentId(specific.get_RefLayerAttributes().id());
refLayer->SetEventRegionsOverride(specific.get_RefLayerAttributes().eventRegionsOverride());
break;
}
case Specific::TImageLayerAttributes: {
MOZ_LAYERS_LOG(("[ParentSide] image layer"));
ImageLayerComposite* imageLayer = layerParent->AsImageLayerComposite();
if (!imageLayer) {
return false;
}
const ImageLayerAttributes& attrs = specific.get_ImageLayerAttributes();
imageLayer->SetSamplingFilter(attrs.samplingFilter());
imageLayer->SetScaleToSize(attrs.scaleToSize(), attrs.scaleMode());
break;
}
default:
NS_RUNTIMEABORT("not reached");
}
updateHitTestingTree = true;
break;
}
case Edit::TOpSetDiagnosticTypes: {
mLayerManager->GetCompositor()->SetDiagnosticTypes(
edit.get_OpSetDiagnosticTypes().diagnostics());
break;
}
case Edit::TOpWindowOverlayChanged: {
mLayerManager->SetWindowOverlayChanged();
break;
}
// Tree ops
case Edit::TOpSetRoot: {
MOZ_LAYERS_LOG(("[ParentSide] SetRoot"));
Layer* newRoot = AsLayerComposite(edit.get_OpSetRoot())->AsLayer();
if (!newRoot) {
return false;
}
if (newRoot->GetParent()) {
// newRoot is not a root!
return false;
}
mRoot = newRoot;
updateHitTestingTree = true;
break;
}
case Edit::TOpInsertAfter: {
MOZ_LAYERS_LOG(("[ParentSide] InsertAfter"));
const OpInsertAfter& oia = edit.get_OpInsertAfter();
Layer* child = ShadowChild(oia)->AsLayer();
if (!child) {
return false;
}
ContainerLayerComposite* container = ShadowContainer(oia)->AsContainerLayerComposite();
if (!container ||
!container->InsertAfter(child, ShadowAfter(oia)->AsLayer()))
{
return false;
}
updateHitTestingTree = true;
break;
}
case Edit::TOpPrependChild: {
MOZ_LAYERS_LOG(("[ParentSide] PrependChild"));
const OpPrependChild& oac = edit.get_OpPrependChild();
Layer* child = ShadowChild(oac)->AsLayer();
if (!child) {
return false;
}
ContainerLayerComposite* container = ShadowContainer(oac)->AsContainerLayerComposite();
if (!container ||
!container->InsertAfter(child, nullptr))
{
return false;
}
updateHitTestingTree = true;
break;
}
case Edit::TOpRemoveChild: {
MOZ_LAYERS_LOG(("[ParentSide] RemoveChild"));
const OpRemoveChild& orc = edit.get_OpRemoveChild();
Layer* childLayer = ShadowChild(orc)->AsLayer();
if (!childLayer) {
return false;
}
ContainerLayerComposite* container = ShadowContainer(orc)->AsContainerLayerComposite();
if (!container ||
!container->RemoveChild(childLayer))
{
return false;
}
updateHitTestingTree = true;
break;
}
case Edit::TOpRepositionChild: {
MOZ_LAYERS_LOG(("[ParentSide] RepositionChild"));
const OpRepositionChild& orc = edit.get_OpRepositionChild();
Layer* child = ShadowChild(orc)->AsLayer();
if (!child) {
return false;
}
ContainerLayerComposite* container = ShadowContainer(orc)->AsContainerLayerComposite();
if (!container ||
!container->RepositionChild(child, ShadowAfter(orc)->AsLayer()))
{
return false;
}
updateHitTestingTree = true;
break;
}
case Edit::TOpRaiseToTopChild: {
MOZ_LAYERS_LOG(("[ParentSide] RaiseToTopChild"));
const OpRaiseToTopChild& rtc = edit.get_OpRaiseToTopChild();
Layer* child = ShadowChild(rtc)->AsLayer();
if (!child) {
return false;
}
ContainerLayerComposite* container = ShadowContainer(rtc)->AsContainerLayerComposite();
if (!container ||
!container->RepositionChild(child, nullptr))
{
return false;
}
updateHitTestingTree = true;
break;
}
case Edit::TCompositableOperation: {
if (!ReceiveCompositableUpdate(edit.get_CompositableOperation(),
replyv)) {
return false;
}
break;
}
case Edit::TOpAttachCompositable: {
const OpAttachCompositable& op = edit.get_OpAttachCompositable();
CompositableHost* host = CompositableHost::FromIPDLActor(op.compositableParent());
if (mPendingCompositorUpdates) {
// Do not attach compositables from old layer trees. Return true since
// content cannot handle errors.
return true;
}
if (!Attach(cast(op.layerParent()), host, false)) {
return false;
}
host->SetCompositorID(mLayerManager->GetCompositor()->GetCompositorID());
break;
}
case Edit::TOpAttachAsyncCompositable: {
const OpAttachAsyncCompositable& op = edit.get_OpAttachAsyncCompositable();
PCompositableParent* compositableParent = CompositableMap::Get(op.containerID());
if (!compositableParent) {
NS_ERROR("CompositableParent not found in the map");
return false;
}
if (mPendingCompositorUpdates) {
// Do not attach compositables from old layer trees. Return true since
// content cannot handle errors.
return true;
}
CompositableHost* host = CompositableHost::FromIPDLActor(compositableParent);
if (!Attach(cast(op.layerParent()), host, true)) {
return false;
}
host->SetCompositorID(mLayerManager->GetCompositor()->GetCompositorID());
break;
}
default:
NS_RUNTIMEABORT("not reached");
}
}
mCompositorBridge->ShadowLayersUpdated(this, aTransactionId, targetConfig,
aPlugins, isFirstPaint, scheduleComposite,
paintSequenceNumber, isRepeatTransaction,
aPaintSyncId, updateHitTestingTree);
{
AutoResolveRefLayers resolve(mCompositorBridge->GetCompositionManager(this));
layer_manager()->EndTransaction(TimeStamp(), LayerManager::END_NO_IMMEDIATE_REDRAW);
}
if (reply) {
reply->SetCapacity(replyv.size());
if (replyv.size() > 0) {
reply->AppendElements(&replyv.front(), replyv.size());
}
}
if (!IsSameProcess()) {
// Ensure that any pending operations involving back and front
// buffers have completed, so that neither process stomps on the
// other's buffer contents.
LayerManagerComposite::PlatformSyncBeforeReplyUpdate();
}
#ifdef COMPOSITOR_PERFORMANCE_WARNING
int compositeTime = (int)(mozilla::TimeStamp::Now() - updateStart).ToMilliseconds();
if (compositeTime > 15) {
printf_stderr("Compositor: Layers update took %i ms (blocking gecko).\n", compositeTime);
}
#endif
// Enable visual warning for long transaction when draw FPS option is enabled
bool drawFps = gfxPrefs::LayersDrawFPS();
if (drawFps) {
uint32_t visualWarningTrigger = gfxPrefs::LayerTransactionWarning();
// The default theshold is 200ms to trigger, hit red when it take 4 times longer
TimeDuration latency = TimeStamp::Now() - aTransactionStart;
if (latency > TimeDuration::FromMilliseconds(visualWarningTrigger)) {
float severity = (latency - TimeDuration::FromMilliseconds(visualWarningTrigger)).ToMilliseconds() /
(4 * visualWarningTrigger);
if (severity > 1.f) {
severity = 1.f;
}
mLayerManager->VisualFrameWarning(severity);
PR_LogPrint("LayerTransactionParent::RecvUpdate transaction from process %d took %f ms",
OtherPid(),
latency.ToMilliseconds());
}
}
profiler_tracing("Paint", "LayerTransaction", TRACING_INTERVAL_END);
return true;
}
bool
LayerTransactionParent::RecvSetLayerObserverEpoch(const uint64_t& aLayerObserverEpoch)
{
mChildEpoch = aLayerObserverEpoch;
return true;
}
bool
LayerTransactionParent::ShouldParentObserveEpoch()
{
if (mParentEpoch == mChildEpoch) {
return false;
}
mParentEpoch = mChildEpoch;
return true;
}
bool
LayerTransactionParent::RecvSetTestSampleTime(const TimeStamp& aTime)
{
return mCompositorBridge->SetTestSampleTime(this, aTime);
}
bool
LayerTransactionParent::RecvLeaveTestMode()
{
mCompositorBridge->LeaveTestMode(this);
return true;
}
bool
LayerTransactionParent::RecvGetAnimationOpacity(PLayerParent* aParent,
float* aOpacity,
bool* aHasAnimationOpacity)
{
*aHasAnimationOpacity = false;
if (mDestroyed || !layer_manager() || layer_manager()->IsDestroyed()) {
return false;
}
Layer* layer = cast(aParent)->AsLayer();
if (!layer) {
return false;
}
mCompositorBridge->ApplyAsyncProperties(this);
if (!layer->AsLayerComposite()->GetShadowOpacitySetByAnimation()) {
return true;
}
*aOpacity = layer->GetLocalOpacity();
*aHasAnimationOpacity = true;
return true;
}
bool
LayerTransactionParent::RecvGetAnimationTransform(PLayerParent* aParent,
MaybeTransform* aTransform)
{
if (mDestroyed || !layer_manager() || layer_manager()->IsDestroyed()) {
return false;
}
Layer* layer = cast(aParent)->AsLayer();
if (!layer) {
return false;
}
// Make sure we apply the latest animation style or else we can end up with
// a race between when we temporarily clear the animation transform (in
// CompositorBridgeParent::SetShadowProperties) and when animation recalculates
// the value.
mCompositorBridge->ApplyAsyncProperties(this);
// This method is specific to transforms applied by animation.
// This is because this method uses the information stored with an animation
// such as the origin of the reference frame corresponding to the layer, to
// recover the untranslated transform from the shadow transform. For
// transforms that are not set by animation we don't have this information
// available.
if (!layer->AsLayerComposite()->GetShadowTransformSetByAnimation()) {
*aTransform = mozilla::void_t();
return true;
}
// The following code recovers the untranslated transform
// from the shadow transform by undoing the translations in
// AsyncCompositionManager::SampleValue.
Matrix4x4 transform = layer->AsLayerComposite()->GetShadowBaseTransform();
if (ContainerLayer* c = layer->AsContainerLayer()) {
// Undo the scale transform applied by AsyncCompositionManager::SampleValue
transform.PostScale(1.0f/c->GetInheritedXScale(),
1.0f/c->GetInheritedYScale(),
1.0f);
}
float scale = 1;
Point3D scaledOrigin;
Point3D transformOrigin;
for (uint32_t i=0; i < layer->GetAnimations().Length(); i++) {
if (layer->GetAnimations()[i].data().type() == AnimationData::TTransformData) {
const TransformData& data = layer->GetAnimations()[i].data().get_TransformData();
scale = data.appUnitsPerDevPixel();
scaledOrigin =
Point3D(NS_round(NSAppUnitsToFloatPixels(data.origin().x, scale)),
NS_round(NSAppUnitsToFloatPixels(data.origin().y, scale)),
0.0f);
transformOrigin = data.transformOrigin();
break;
}
}
// If our parent isn't a perspective layer, then the offset into reference
// frame coordinates will have been applied to us. Add an inverse translation
// to cancel it out.
if (!layer->GetParent() || !layer->GetParent()->GetTransformIsPerspective()) {
transform.PostTranslate(-scaledOrigin.x, -scaledOrigin.y, -scaledOrigin.z);
}
// Undo the rebasing applied by
// nsDisplayTransform::GetResultingTransformMatrixInternal
transform.ChangeBasis(-transformOrigin);
// Convert to CSS pixels (this undoes the operations performed by
// nsStyleTransformMatrix::ProcessTranslatePart which is called from
// nsDisplayTransform::GetResultingTransformMatrix)
double devPerCss =
double(scale) / double(nsDeviceContext::AppUnitsPerCSSPixel());
transform._41 *= devPerCss;
transform._42 *= devPerCss;
transform._43 *= devPerCss;
*aTransform = transform;
return true;
}
static AsyncPanZoomController*
GetAPZCForViewID(Layer* aLayer, FrameMetrics::ViewID aScrollID)
{
AsyncPanZoomController* resultApzc = nullptr;
ForEachNode<ForwardIterator>(
aLayer,
[aScrollID, &resultApzc] (Layer* layer)
{
for (uint32_t i = 0; i < layer->GetScrollMetadataCount(); i++) {
if (layer->GetFrameMetrics(i).GetScrollId() == aScrollID) {
resultApzc = layer->GetAsyncPanZoomController(i);
return TraversalFlag::Abort;
}
}
return TraversalFlag::Continue;
});
return resultApzc;
}
bool
LayerTransactionParent::RecvSetAsyncScrollOffset(const FrameMetrics::ViewID& aScrollID,
const float& aX, const float& aY)
{
if (mDestroyed || !layer_manager() || layer_manager()->IsDestroyed()) {
return false;
}
AsyncPanZoomController* controller = GetAPZCForViewID(mRoot, aScrollID);
if (!controller) {
return false;
}
controller->SetTestAsyncScrollOffset(CSSPoint(aX, aY));
return true;
}
bool
LayerTransactionParent::RecvSetAsyncZoom(const FrameMetrics::ViewID& aScrollID,
const float& aValue)
{
if (mDestroyed || !layer_manager() || layer_manager()->IsDestroyed()) {
return false;
}
AsyncPanZoomController* controller = GetAPZCForViewID(mRoot, aScrollID);
if (!controller) {
return false;
}
controller->SetTestAsyncZoom(LayerToParentLayerScale(aValue));
return true;
}
bool
LayerTransactionParent::RecvFlushApzRepaints()
{
mCompositorBridge->FlushApzRepaints(this);
return true;
}
bool
LayerTransactionParent::RecvGetAPZTestData(APZTestData* aOutData)
{
mCompositorBridge->GetAPZTestData(this, aOutData);
return true;
}
bool
LayerTransactionParent::RecvRequestProperty(const nsString& aProperty, float* aValue)
{
if (aProperty.Equals(NS_LITERAL_STRING("overdraw"))) {
*aValue = layer_manager()->GetCompositor()->GetFillRatio();
} else if (aProperty.Equals(NS_LITERAL_STRING("missed_hwc"))) {
*aValue = layer_manager()->LastFrameMissedHWC() ? 1 : 0;
} else {
*aValue = -1;
}
return true;
}
bool
LayerTransactionParent::RecvSetConfirmedTargetAPZC(const uint64_t& aBlockId,
nsTArray<ScrollableLayerGuid>&& aTargets)
{
mCompositorBridge->SetConfirmedTargetAPZC(this, aBlockId, aTargets);
return true;
}
bool
LayerTransactionParent::Attach(ShadowLayerParent* aLayerParent,
CompositableHost* aCompositable,
bool aIsAsync)
{
if (!aCompositable) {
return false;
}
Layer* baselayer = aLayerParent->AsLayer();
if (!baselayer) {
return false;
}
LayerComposite* layer = baselayer->AsLayerComposite();
if (!layer) {
return false;
}
Compositor* compositor
= static_cast<LayerManagerComposite*>(aLayerParent->AsLayer()->Manager())->GetCompositor();
if (!layer->SetCompositableHost(aCompositable)) {
// not all layer types accept a compositable, see bug 967824
return false;
}
aCompositable->Attach(aLayerParent->AsLayer(),
compositor,
aIsAsync
? CompositableHost::ALLOW_REATTACH
| CompositableHost::KEEP_ATTACHED
: CompositableHost::NO_FLAGS);
return true;
}
bool
LayerTransactionParent::RecvClearCachedResources()
{
if (mRoot) {
// NB: |mRoot| here is the *child* context's root. In this parent
// context, it's just a subtree root. We need to scope the clear
// of resources to exactly that subtree, so we specify it here.
mLayerManager->ClearCachedResources(mRoot);
}
mCompositorBridge->NotifyClearCachedResources(this);
return true;
}
bool
LayerTransactionParent::RecvForceComposite()
{
mCompositorBridge->ForceComposite(this);
return true;
}
PLayerParent*
LayerTransactionParent::AllocPLayerParent()
{
return new ShadowLayerParent();
}
bool
LayerTransactionParent::DeallocPLayerParent(PLayerParent* actor)
{
delete actor;
return true;
}
PCompositableParent*
LayerTransactionParent::AllocPCompositableParent(const TextureInfo& aInfo)
{
return CompositableHost::CreateIPDLActor(this, aInfo, 0);
}
bool
LayerTransactionParent::DeallocPCompositableParent(PCompositableParent* aActor)
{
return CompositableHost::DestroyIPDLActor(aActor);
}
void
LayerTransactionParent::ActorDestroy(ActorDestroyReason why)
{
}
bool
LayerTransactionParent::AllocShmem(size_t aSize,
ipc::SharedMemory::SharedMemoryType aType,
ipc::Shmem* aShmem)
{
if (!mIPCOpen || mDestroyed) {
return false;
}
return PLayerTransactionParent::AllocShmem(aSize, aType, aShmem);
}
bool
LayerTransactionParent::AllocUnsafeShmem(size_t aSize,
ipc::SharedMemory::SharedMemoryType aType,
ipc::Shmem* aShmem)
{
if (!mIPCOpen || mDestroyed) {
return false;
}
return PLayerTransactionParent::AllocUnsafeShmem(aSize, aType, aShmem);
}
void
LayerTransactionParent::DeallocShmem(ipc::Shmem& aShmem)
{
if (!mIPCOpen || mDestroyed) {
return;
}
PLayerTransactionParent::DeallocShmem(aShmem);
}
bool LayerTransactionParent::IsSameProcess() const
{
return OtherPid() == base::GetCurrentProcId();
}
void
LayerTransactionParent::SendAsyncMessage(const InfallibleTArray<AsyncParentMessageData>& aMessage)
{
MOZ_ASSERT_UNREACHABLE("unexpected to be called");
}
void
LayerTransactionParent::SendPendingAsyncMessages()
{
mCompositorBridge->SendPendingAsyncMessages();
}
void
LayerTransactionParent::SetAboutToSendAsyncMessages()
{
mCompositorBridge->SetAboutToSendAsyncMessages();
}
void
LayerTransactionParent::NotifyNotUsed(PTextureParent* aTexture, uint64_t aTransactionId)
{
MOZ_ASSERT_UNREACHABLE("unexpected to be called");
}
} // namespace layers
} // namespace mozilla
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