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gecko-dev/gfx/layers/Layers.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 "Layers.h"
#include <algorithm> // for max, min
#include "apz/src/AsyncPanZoomController.h"
#include "CompositableHost.h" // for CompositableHost
#include "ImageContainer.h" // for ImageContainer, etc
#include "ImageLayers.h" // for ImageLayer
#include "LayerSorter.h" // for SortLayersBy3DZOrder
#include "LayersLogging.h" // for AppendToString
#include "ReadbackLayer.h" // for ReadbackLayer
#include "UnitTransforms.h" // for ViewAs
#include "gfxPlatform.h" // for gfxPlatform
#include "gfxPrefs.h"
#include "gfxUtils.h" // for gfxUtils, etc
#include "gfx2DGlue.h"
#include "mozilla/DebugOnly.h" // for DebugOnly
#include "mozilla/Telemetry.h" // for Accumulate
#include "mozilla/dom/Animation.h" // for ComputedTimingFunction
#include "mozilla/gfx/2D.h" // for DrawTarget
#include "mozilla/gfx/BaseSize.h" // for BaseSize
#include "mozilla/gfx/Matrix.h" // for Matrix4x4
#include "mozilla/layers/Compositor.h" // for Compositor
#include "mozilla/layers/CompositorTypes.h"
#include "mozilla/layers/LayerManagerComposite.h" // for LayerComposite
#include "mozilla/layers/LayerMetricsWrapper.h" // for LayerMetricsWrapper
#include "mozilla/layers/LayersMessages.h" // for TransformFunction, etc
#include "mozilla/layers/PersistentBufferProvider.h"
#include "nsAString.h"
#include "nsCSSValue.h" // for nsCSSValue::Array, etc
#include "nsPrintfCString.h" // for nsPrintfCString
#include "nsStyleStruct.h" // for nsTimingFunction, etc
#include "protobuf/LayerScopePacket.pb.h"
uint8_t gLayerManagerLayerBuilder;
namespace mozilla {
namespace layers {
FILE*
FILEOrDefault(FILE* aFile)
{
return aFile ? aFile : stderr;
}
typedef FrameMetrics::ViewID ViewID;
using namespace mozilla::gfx;
//--------------------------------------------------
// LayerManager
FrameMetrics::ViewID
LayerManager::GetRootScrollableLayerId()
{
if (!mRoot) {
return FrameMetrics::NULL_SCROLL_ID;
}
nsTArray<LayerMetricsWrapper> queue;
queue.AppendElement(LayerMetricsWrapper(mRoot));
while (queue.Length()) {
LayerMetricsWrapper layer = queue[0];
queue.RemoveElementAt(0);
const FrameMetrics& frameMetrics = layer.Metrics();
if (frameMetrics.IsScrollable()) {
return frameMetrics.GetScrollId();
}
LayerMetricsWrapper child = layer.GetFirstChild();
while (child) {
queue.AppendElement(child);
child = child.GetNextSibling();
}
}
return FrameMetrics::NULL_SCROLL_ID;
}
void
LayerManager::GetRootScrollableLayers(nsTArray<Layer*>& aArray)
{
if (!mRoot) {
return;
}
FrameMetrics::ViewID rootScrollableId = GetRootScrollableLayerId();
if (rootScrollableId == FrameMetrics::NULL_SCROLL_ID) {
aArray.AppendElement(mRoot);
return;
}
nsTArray<Layer*> queue;
queue.AppendElement(mRoot);
while (queue.Length()) {
Layer* layer = queue[0];
queue.RemoveElementAt(0);
if (LayerMetricsWrapper::TopmostScrollableMetrics(layer).GetScrollId() == rootScrollableId) {
aArray.AppendElement(layer);
continue;
}
for (Layer* child = layer->GetFirstChild(); child; child = child->GetNextSibling()) {
queue.AppendElement(child);
}
}
}
void
LayerManager::GetScrollableLayers(nsTArray<Layer*>& aArray)
{
if (!mRoot) {
return;
}
nsTArray<Layer*> queue;
queue.AppendElement(mRoot);
while (!queue.IsEmpty()) {
Layer* layer = queue.LastElement();
queue.RemoveElementAt(queue.Length() - 1);
if (layer->HasScrollableFrameMetrics()) {
aArray.AppendElement(layer);
continue;
}
for (Layer* child = layer->GetFirstChild(); child; child = child->GetNextSibling()) {
queue.AppendElement(child);
}
}
}
already_AddRefed<DrawTarget>
LayerManager::CreateOptimalDrawTarget(const gfx::IntSize &aSize,
SurfaceFormat aFormat)
{
return gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(aSize,
aFormat);
}
already_AddRefed<DrawTarget>
LayerManager::CreateOptimalMaskDrawTarget(const gfx::IntSize &aSize)
{
return CreateOptimalDrawTarget(aSize, SurfaceFormat::A8);
}
already_AddRefed<DrawTarget>
LayerManager::CreateDrawTarget(const IntSize &aSize,
SurfaceFormat aFormat)
{
return gfxPlatform::GetPlatform()->
CreateOffscreenCanvasDrawTarget(aSize, aFormat);
}
already_AddRefed<PersistentBufferProvider>
LayerManager::CreatePersistentBufferProvider(const mozilla::gfx::IntSize &aSize,
mozilla::gfx::SurfaceFormat aFormat)
{
RefPtr<PersistentBufferProviderBasic> bufferProvider =
new PersistentBufferProviderBasic(this, aSize, aFormat,
gfxPlatform::GetPlatform()->GetPreferredCanvasBackend());
if (!bufferProvider->IsValid()) {
bufferProvider =
new PersistentBufferProviderBasic(this, aSize, aFormat,
gfxPlatform::GetPlatform()->GetFallbackCanvasBackend());
}
if (!bufferProvider->IsValid()) {
return nullptr;
}
return bufferProvider.forget();
}
#ifdef DEBUG
void
LayerManager::Mutated(Layer* aLayer)
{
}
#endif // DEBUG
already_AddRefed<ImageContainer>
LayerManager::CreateImageContainer(ImageContainer::Mode flag)
{
nsRefPtr<ImageContainer> container = new ImageContainer(flag);
return container.forget();
}
bool
LayerManager::AreComponentAlphaLayersEnabled()
{
return gfxPrefs::ComponentAlphaEnabled();
}
//--------------------------------------------------
// Layer
Layer::Layer(LayerManager* aManager, void* aImplData) :
mManager(aManager),
mParent(nullptr),
mNextSibling(nullptr),
mPrevSibling(nullptr),
mImplData(aImplData),
mMaskLayer(nullptr),
mPostXScale(1.0f),
mPostYScale(1.0f),
mOpacity(1.0),
mMixBlendMode(CompositionOp::OP_OVER),
mForceIsolatedGroup(false),
mContentFlags(0),
mUseTileSourceRect(false),
mIsFixedPosition(false),
mMargins(0, 0, 0, 0),
mStickyPositionData(nullptr),
mScrollbarTargetId(FrameMetrics::NULL_SCROLL_ID),
mScrollbarDirection(ScrollDirection::NONE),
mScrollbarThumbRatio(0.0f),
mIsScrollbarContainer(false),
mDebugColorIndex(0),
mAnimationGeneration(0)
{}
Layer::~Layer()
{}
Animation*
Layer::AddAnimation()
{
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) AddAnimation", this));
MOZ_ASSERT(!mPendingAnimations, "should have called ClearAnimations first");
Animation* anim = mAnimations.AppendElement();
Mutated();
return anim;
}
void
Layer::ClearAnimations()
{
mPendingAnimations = nullptr;
if (mAnimations.IsEmpty() && mAnimationData.IsEmpty()) {
return;
}
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) ClearAnimations", this));
mAnimations.Clear();
mAnimationData.Clear();
Mutated();
}
Animation*
Layer::AddAnimationForNextTransaction()
{
MOZ_ASSERT(mPendingAnimations,
"should have called ClearAnimationsForNextTransaction first");
Animation* anim = mPendingAnimations->AppendElement();
return anim;
}
void
Layer::ClearAnimationsForNextTransaction()
{
// Ensure we have a non-null mPendingAnimations to mark a future clear.
if (!mPendingAnimations) {
mPendingAnimations = new AnimationArray;
}
mPendingAnimations->Clear();
}
static inline void
SetCSSAngle(const CSSAngle& aAngle, nsCSSValue& aValue)
{
aValue.SetFloatValue(aAngle.value(), nsCSSUnit(aAngle.unit()));
}
static nsCSSValueSharedList*
CreateCSSValueList(const InfallibleTArray<TransformFunction>& aFunctions)
{
nsAutoPtr<nsCSSValueList> result;
nsCSSValueList** resultTail = getter_Transfers(result);
for (uint32_t i = 0; i < aFunctions.Length(); i++) {
nsRefPtr<nsCSSValue::Array> arr;
switch (aFunctions[i].type()) {
case TransformFunction::TRotationX:
{
const CSSAngle& angle = aFunctions[i].get_RotationX().angle();
arr = StyleAnimationValue::AppendTransformFunction(eCSSKeyword_rotatex,
resultTail);
SetCSSAngle(angle, arr->Item(1));
break;
}
case TransformFunction::TRotationY:
{
const CSSAngle& angle = aFunctions[i].get_RotationY().angle();
arr = StyleAnimationValue::AppendTransformFunction(eCSSKeyword_rotatey,
resultTail);
SetCSSAngle(angle, arr->Item(1));
break;
}
case TransformFunction::TRotationZ:
{
const CSSAngle& angle = aFunctions[i].get_RotationZ().angle();
arr = StyleAnimationValue::AppendTransformFunction(eCSSKeyword_rotatez,
resultTail);
SetCSSAngle(angle, arr->Item(1));
break;
}
case TransformFunction::TRotation:
{
const CSSAngle& angle = aFunctions[i].get_Rotation().angle();
arr = StyleAnimationValue::AppendTransformFunction(eCSSKeyword_rotate,
resultTail);
SetCSSAngle(angle, arr->Item(1));
break;
}
case TransformFunction::TRotation3D:
{
float x = aFunctions[i].get_Rotation3D().x();
float y = aFunctions[i].get_Rotation3D().y();
float z = aFunctions[i].get_Rotation3D().z();
const CSSAngle& angle = aFunctions[i].get_Rotation3D().angle();
arr =
StyleAnimationValue::AppendTransformFunction(eCSSKeyword_rotate3d,
resultTail);
arr->Item(1).SetFloatValue(x, eCSSUnit_Number);
arr->Item(2).SetFloatValue(y, eCSSUnit_Number);
arr->Item(3).SetFloatValue(z, eCSSUnit_Number);
SetCSSAngle(angle, arr->Item(4));
break;
}
case TransformFunction::TScale:
{
arr =
StyleAnimationValue::AppendTransformFunction(eCSSKeyword_scale3d,
resultTail);
arr->Item(1).SetFloatValue(aFunctions[i].get_Scale().x(), eCSSUnit_Number);
arr->Item(2).SetFloatValue(aFunctions[i].get_Scale().y(), eCSSUnit_Number);
arr->Item(3).SetFloatValue(aFunctions[i].get_Scale().z(), eCSSUnit_Number);
break;
}
case TransformFunction::TTranslation:
{
arr =
StyleAnimationValue::AppendTransformFunction(eCSSKeyword_translate3d,
resultTail);
arr->Item(1).SetFloatValue(aFunctions[i].get_Translation().x(), eCSSUnit_Pixel);
arr->Item(2).SetFloatValue(aFunctions[i].get_Translation().y(), eCSSUnit_Pixel);
arr->Item(3).SetFloatValue(aFunctions[i].get_Translation().z(), eCSSUnit_Pixel);
break;
}
case TransformFunction::TSkewX:
{
const CSSAngle& x = aFunctions[i].get_SkewX().x();
arr = StyleAnimationValue::AppendTransformFunction(eCSSKeyword_skewx,
resultTail);
SetCSSAngle(x, arr->Item(1));
break;
}
case TransformFunction::TSkewY:
{
const CSSAngle& y = aFunctions[i].get_SkewY().y();
arr = StyleAnimationValue::AppendTransformFunction(eCSSKeyword_skewy,
resultTail);
SetCSSAngle(y, arr->Item(1));
break;
}
case TransformFunction::TSkew:
{
const CSSAngle& x = aFunctions[i].get_Skew().x();
const CSSAngle& y = aFunctions[i].get_Skew().y();
arr = StyleAnimationValue::AppendTransformFunction(eCSSKeyword_skew,
resultTail);
SetCSSAngle(x, arr->Item(1));
SetCSSAngle(y, arr->Item(2));
break;
}
case TransformFunction::TTransformMatrix:
{
arr =
StyleAnimationValue::AppendTransformFunction(eCSSKeyword_matrix3d,
resultTail);
const gfx::Matrix4x4& matrix = aFunctions[i].get_TransformMatrix().value();
arr->Item(1).SetFloatValue(matrix._11, eCSSUnit_Number);
arr->Item(2).SetFloatValue(matrix._12, eCSSUnit_Number);
arr->Item(3).SetFloatValue(matrix._13, eCSSUnit_Number);
arr->Item(4).SetFloatValue(matrix._14, eCSSUnit_Number);
arr->Item(5).SetFloatValue(matrix._21, eCSSUnit_Number);
arr->Item(6).SetFloatValue(matrix._22, eCSSUnit_Number);
arr->Item(7).SetFloatValue(matrix._23, eCSSUnit_Number);
arr->Item(8).SetFloatValue(matrix._24, eCSSUnit_Number);
arr->Item(9).SetFloatValue(matrix._31, eCSSUnit_Number);
arr->Item(10).SetFloatValue(matrix._32, eCSSUnit_Number);
arr->Item(11).SetFloatValue(matrix._33, eCSSUnit_Number);
arr->Item(12).SetFloatValue(matrix._34, eCSSUnit_Number);
arr->Item(13).SetFloatValue(matrix._41, eCSSUnit_Number);
arr->Item(14).SetFloatValue(matrix._42, eCSSUnit_Number);
arr->Item(15).SetFloatValue(matrix._43, eCSSUnit_Number);
arr->Item(16).SetFloatValue(matrix._44, eCSSUnit_Number);
break;
}
case TransformFunction::TPerspective:
{
float perspective = aFunctions[i].get_Perspective().value();
arr =
StyleAnimationValue::AppendTransformFunction(eCSSKeyword_perspective,
resultTail);
arr->Item(1).SetFloatValue(perspective, eCSSUnit_Pixel);
break;
}
default:
NS_ASSERTION(false, "All functions should be implemented?");
}
}
if (aFunctions.Length() == 0) {
result = new nsCSSValueList();
result->mValue.SetNoneValue();
}
return new nsCSSValueSharedList(result.forget());
}
void
Layer::SetAnimations(const AnimationArray& aAnimations)
{
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) SetAnimations", this));
mAnimations = aAnimations;
mAnimationData.Clear();
for (uint32_t i = 0; i < mAnimations.Length(); i++) {
AnimData* data = mAnimationData.AppendElement();
InfallibleTArray<nsAutoPtr<ComputedTimingFunction> >& functions =
data->mFunctions;
const InfallibleTArray<AnimationSegment>& segments =
mAnimations.ElementAt(i).segments();
for (uint32_t j = 0; j < segments.Length(); j++) {
TimingFunction tf = segments.ElementAt(j).sampleFn();
ComputedTimingFunction* ctf = new ComputedTimingFunction();
switch (tf.type()) {
case TimingFunction::TCubicBezierFunction: {
CubicBezierFunction cbf = tf.get_CubicBezierFunction();
ctf->Init(nsTimingFunction(cbf.x1(), cbf.y1(), cbf.x2(), cbf.y2()));
break;
}
default: {
NS_ASSERTION(tf.type() == TimingFunction::TStepFunction,
"Function must be bezier or step");
StepFunction sf = tf.get_StepFunction();
nsTimingFunction::Type type = sf.type() == 1 ? nsTimingFunction::StepStart
: nsTimingFunction::StepEnd;
ctf->Init(nsTimingFunction(type, sf.steps()));
break;
}
}
functions.AppendElement(ctf);
}
// Precompute the StyleAnimationValues that we need if this is a transform
// animation.
InfallibleTArray<StyleAnimationValue>& startValues = data->mStartValues;
InfallibleTArray<StyleAnimationValue>& endValues = data->mEndValues;
for (uint32_t j = 0; j < mAnimations[i].segments().Length(); j++) {
const AnimationSegment& segment = mAnimations[i].segments()[j];
StyleAnimationValue* startValue = startValues.AppendElement();
StyleAnimationValue* endValue = endValues.AppendElement();
if (segment.endState().type() == Animatable::TArrayOfTransformFunction) {
const InfallibleTArray<TransformFunction>& startFunctions =
segment.startState().get_ArrayOfTransformFunction();
startValue->SetTransformValue(CreateCSSValueList(startFunctions));
const InfallibleTArray<TransformFunction>& endFunctions =
segment.endState().get_ArrayOfTransformFunction();
endValue->SetTransformValue(CreateCSSValueList(endFunctions));
} else {
NS_ASSERTION(segment.endState().type() == Animatable::Tfloat,
"Unknown Animatable type");
startValue->SetFloatValue(segment.startState().get_float());
endValue->SetFloatValue(segment.endState().get_float());
}
}
}
Mutated();
}
void
Layer::StartPendingAnimations(const TimeStamp& aReadyTime)
{
bool updated = false;
for (size_t animIdx = 0, animEnd = mAnimations.Length();
animIdx < animEnd; animIdx++) {
Animation& anim = mAnimations[animIdx];
if (anim.startTime().IsNull()) {
anim.startTime() = aReadyTime - anim.initialCurrentTime();
updated = true;
}
}
if (updated) {
Mutated();
}
for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
child->StartPendingAnimations(aReadyTime);
}
}
void
Layer::SetAsyncPanZoomController(uint32_t aIndex, AsyncPanZoomController *controller)
{
MOZ_ASSERT(aIndex < GetFrameMetricsCount());
mApzcs[aIndex] = controller;
}
AsyncPanZoomController*
Layer::GetAsyncPanZoomController(uint32_t aIndex) const
{
MOZ_ASSERT(aIndex < GetFrameMetricsCount());
#ifdef DEBUG
if (mApzcs[aIndex]) {
MOZ_ASSERT(GetFrameMetrics(aIndex).IsScrollable());
}
#endif
return mApzcs[aIndex];
}
void
Layer::FrameMetricsChanged()
{
mApzcs.SetLength(GetFrameMetricsCount());
}
void
Layer::ApplyPendingUpdatesToSubtree()
{
ApplyPendingUpdatesForThisTransaction();
for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
child->ApplyPendingUpdatesToSubtree();
}
}
bool
Layer::CanUseOpaqueSurface()
{
// If the visible content in the layer is opaque, there is no need
// for an alpha channel.
if (GetContentFlags() & CONTENT_OPAQUE)
return true;
// Also, if this layer is the bottommost layer in a container which
// doesn't need an alpha channel, we can use an opaque surface for this
// layer too. Any transparent areas must be covered by something else
// in the container.
ContainerLayer* parent = GetParent();
return parent && parent->GetFirstChild() == this &&
parent->CanUseOpaqueSurface();
}
// NB: eventually these methods will be defined unconditionally, and
// can be moved into Layers.h
const Maybe<ParentLayerIntRect>&
Layer::GetEffectiveClipRect()
{
if (LayerComposite* shadow = AsLayerComposite()) {
return shadow->GetShadowClipRect();
}
return GetClipRect();
}
const nsIntRegion&
Layer::GetEffectiveVisibleRegion()
{
if (LayerComposite* shadow = AsLayerComposite()) {
return shadow->GetShadowVisibleRegion();
}
return GetVisibleRegion();
}
Matrix4x4
Layer::SnapTransformTranslation(const Matrix4x4& aTransform,
Matrix* aResidualTransform)
{
if (aResidualTransform) {
*aResidualTransform = Matrix();
}
Matrix matrix2D;
Matrix4x4 result;
if (mManager->IsSnappingEffectiveTransforms() &&
aTransform.Is2D(&matrix2D) &&
!matrix2D.HasNonTranslation() &&
matrix2D.HasNonIntegerTranslation()) {
IntPoint snappedTranslation = RoundedToInt(matrix2D.GetTranslation());
Matrix snappedMatrix = Matrix::Translation(snappedTranslation.x,
snappedTranslation.y);
result = Matrix4x4::From2D(snappedMatrix);
if (aResidualTransform) {
// set aResidualTransform so that aResidual * snappedMatrix == matrix2D.
// (I.e., appying snappedMatrix after aResidualTransform gives the
// ideal transform.)
*aResidualTransform =
Matrix::Translation(matrix2D._31 - snappedTranslation.x,
matrix2D._32 - snappedTranslation.y);
}
} else {
result = aTransform;
}
return result;
}
Matrix4x4
Layer::SnapTransform(const Matrix4x4& aTransform,
const gfxRect& aSnapRect,
Matrix* aResidualTransform)
{
if (aResidualTransform) {
*aResidualTransform = Matrix();
}
Matrix matrix2D;
Matrix4x4 result;
if (mManager->IsSnappingEffectiveTransforms() &&
aTransform.Is2D(&matrix2D) &&
gfx::Size(1.0, 1.0) <= ToSize(aSnapRect.Size()) &&
matrix2D.PreservesAxisAlignedRectangles()) {
IntPoint transformedTopLeft = RoundedToInt(matrix2D * ToPoint(aSnapRect.TopLeft()));
IntPoint transformedTopRight = RoundedToInt(matrix2D * ToPoint(aSnapRect.TopRight()));
IntPoint transformedBottomRight = RoundedToInt(matrix2D * ToPoint(aSnapRect.BottomRight()));
Matrix snappedMatrix = gfxUtils::TransformRectToRect(aSnapRect,
transformedTopLeft, transformedTopRight, transformedBottomRight);
result = Matrix4x4::From2D(snappedMatrix);
if (aResidualTransform && !snappedMatrix.IsSingular()) {
// set aResidualTransform so that aResidual * snappedMatrix == matrix2D.
// (i.e., appying snappedMatrix after aResidualTransform gives the
// ideal transform.
Matrix snappedMatrixInverse = snappedMatrix;
snappedMatrixInverse.Invert();
*aResidualTransform = matrix2D * snappedMatrixInverse;
}
} else {
result = aTransform;
}
return result;
}
static bool
AncestorLayerMayChangeTransform(Layer* aLayer)
{
for (Layer* l = aLayer; l; l = l->GetParent()) {
if (l->GetContentFlags() & Layer::CONTENT_MAY_CHANGE_TRANSFORM) {
return true;
}
}
return false;
}
bool
Layer::MayResample()
{
Matrix transform2d;
return !GetEffectiveTransform().Is2D(&transform2d) ||
ThebesMatrix(transform2d).HasNonIntegerTranslation() ||
AncestorLayerMayChangeTransform(this);
}
RenderTargetIntRect
Layer::CalculateScissorRect(const RenderTargetIntRect& aCurrentScissorRect)
{
ContainerLayer* container = GetParent();
NS_ASSERTION(container, "This can't be called on the root!");
// Establish initial clip rect: it's either the one passed in, or
// if the parent has an intermediate surface, it's the extents of that surface.
RenderTargetIntRect currentClip;
if (container->UseIntermediateSurface()) {
currentClip.SizeTo(container->GetIntermediateSurfaceRect().Size());
} else {
currentClip = aCurrentScissorRect;
}
if (!GetEffectiveClipRect()) {
return currentClip;
}
const RenderTargetIntRect clipRect =
ViewAs<RenderTargetPixel>(*GetEffectiveClipRect(),
PixelCastJustification::RenderTargetIsParentLayerForRoot);
if (clipRect.IsEmpty()) {
// We might have a non-translation transform in the container so we can't
// use the code path below.
return RenderTargetIntRect(currentClip.TopLeft(), RenderTargetIntSize(0, 0));
}
RenderTargetIntRect scissor = clipRect;
if (!container->UseIntermediateSurface()) {
gfx::Matrix matrix;
DebugOnly<bool> is2D = container->GetEffectiveTransform().Is2D(&matrix);
// See DefaultComputeEffectiveTransforms below
NS_ASSERTION(is2D && matrix.PreservesAxisAlignedRectangles(),
"Non preserves axis aligned transform with clipped child should have forced intermediate surface");
gfx::Rect r(scissor.x, scissor.y, scissor.width, scissor.height);
gfxRect trScissor = gfx::ThebesRect(matrix.TransformBounds(r));
trScissor.Round();
IntRect tmp;
if (!gfxUtils::GfxRectToIntRect(trScissor, &tmp)) {
return RenderTargetIntRect(currentClip.TopLeft(), RenderTargetIntSize(0, 0));
}
scissor = ViewAs<RenderTargetPixel>(tmp);
// Find the nearest ancestor with an intermediate surface
do {
container = container->GetParent();
} while (container && !container->UseIntermediateSurface());
}
if (container) {
scissor.MoveBy(-container->GetIntermediateSurfaceRect().TopLeft());
}
return currentClip.Intersect(scissor);
}
const FrameMetrics&
Layer::GetFrameMetrics(uint32_t aIndex) const
{
MOZ_ASSERT(aIndex < GetFrameMetricsCount());
return mFrameMetrics[aIndex];
}
bool
Layer::HasScrollableFrameMetrics() const
{
for (uint32_t i = 0; i < GetFrameMetricsCount(); i++) {
if (GetFrameMetrics(i).IsScrollable()) {
return true;
}
}
return false;
}
bool
Layer::IsScrollInfoLayer() const
{
// A scrollable container layer with no children
return AsContainerLayer()
&& HasScrollableFrameMetrics()
&& !GetFirstChild();
}
const Matrix4x4
Layer::GetTransform() const
{
Matrix4x4 transform = mTransform;
transform.PostScale(GetPostXScale(), GetPostYScale(), 1.0f);
if (const ContainerLayer* c = AsContainerLayer()) {
transform.PreScale(c->GetPreXScale(), c->GetPreYScale(), 1.0f);
}
return transform;
}
const Matrix4x4
Layer::GetLocalTransform()
{
Matrix4x4 transform;
if (LayerComposite* shadow = AsLayerComposite())
transform = shadow->GetShadowTransform();
else
transform = mTransform;
transform.PostScale(GetPostXScale(), GetPostYScale(), 1.0f);
if (ContainerLayer* c = AsContainerLayer()) {
transform.PreScale(c->GetPreXScale(), c->GetPreYScale(), 1.0f);
}
return transform;
}
bool
Layer::HasTransformAnimation() const
{
for (uint32_t i = 0; i < mAnimations.Length(); i++) {
if (mAnimations[i].property() == eCSSProperty_transform) {
return true;
}
}
return false;
}
void
Layer::ApplyPendingUpdatesForThisTransaction()
{
if (mPendingTransform && *mPendingTransform != mTransform) {
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) PendingUpdatesForThisTransaction", this));
mTransform = *mPendingTransform;
Mutated();
}
mPendingTransform = nullptr;
if (mPendingAnimations) {
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) PendingUpdatesForThisTransaction", this));
mPendingAnimations->SwapElements(mAnimations);
mPendingAnimations = nullptr;
Mutated();
}
}
const float
Layer::GetLocalOpacity()
{
if (LayerComposite* shadow = AsLayerComposite())
return shadow->GetShadowOpacity();
return mOpacity;
}
float
Layer::GetEffectiveOpacity()
{
float opacity = GetLocalOpacity();
for (ContainerLayer* c = GetParent(); c && !c->UseIntermediateSurface();
c = c->GetParent()) {
opacity *= c->GetLocalOpacity();
}
return opacity;
}
CompositionOp
Layer::GetEffectiveMixBlendMode()
{
if(mMixBlendMode != CompositionOp::OP_OVER)
return mMixBlendMode;
for (ContainerLayer* c = GetParent(); c && !c->UseIntermediateSurface();
c = c->GetParent()) {
if(c->mMixBlendMode != CompositionOp::OP_OVER)
return c->mMixBlendMode;
}
return mMixBlendMode;
}
gfxContext::GraphicsOperator
Layer::DeprecatedGetEffectiveMixBlendMode()
{
return ThebesOp(GetEffectiveMixBlendMode());
}
void
Layer::ComputeEffectiveTransformForMaskLayers(const gfx::Matrix4x4& aTransformToSurface)
{
if (GetMaskLayer()) {
ComputeEffectiveTransformForMaskLayer(GetMaskLayer(), aTransformToSurface);
}
for (size_t i = 0; i < GetAncestorMaskLayerCount(); i++) {
Layer* maskLayer = GetAncestorMaskLayerAt(i);
ComputeEffectiveTransformForMaskLayer(maskLayer, aTransformToSurface);
}
}
/* static */ void
Layer::ComputeEffectiveTransformForMaskLayer(Layer* aMaskLayer, const gfx::Matrix4x4& aTransformToSurface)
{
aMaskLayer->mEffectiveTransform = aTransformToSurface;
#ifdef DEBUG
bool maskIs2D = aMaskLayer->GetTransform().CanDraw2D();
NS_ASSERTION(maskIs2D, "How did we end up with a 3D transform here?!");
#endif
// The mask layer can have an async transform applied to it in some
// situations, so be sure to use its GetLocalTransform() rather than
// its GetTransform().
aMaskLayer->mEffectiveTransform = aMaskLayer->GetLocalTransform() *
aMaskLayer->mEffectiveTransform;
}
RenderTargetRect
Layer::TransformRectToRenderTarget(const LayerIntRect& aRect)
{
LayerRect rect(aRect);
RenderTargetRect quad = RenderTargetRect::FromUnknown(
GetEffectiveTransform().TransformBounds(
LayerPixel::ToUnknown(rect)));
return quad;
}
bool
Layer::GetVisibleRegionRelativeToRootLayer(nsIntRegion& aResult,
nsIntPoint* aLayerOffset)
{
MOZ_ASSERT(aLayerOffset, "invalid offset pointer");
IntPoint offset;
aResult = GetEffectiveVisibleRegion();
for (Layer* layer = this; layer; layer = layer->GetParent()) {
gfx::Matrix matrix;
if (!layer->GetLocalTransform().Is2D(&matrix) ||
!matrix.IsTranslation()) {
return false;
}
// The offset of |layer| to its parent.
IntPoint currentLayerOffset = RoundedToInt(matrix.GetTranslation());
// Translate the accumulated visible region of |this| by the offset of
// |layer|.
aResult.MoveBy(currentLayerOffset.x, currentLayerOffset.y);
// If the parent layer clips its lower layers, clip the visible region
// we're accumulating.
if (layer->GetEffectiveClipRect()) {
aResult.AndWith(ParentLayerIntRect::ToUntyped(*layer->GetEffectiveClipRect()));
}
// Now we need to walk across the list of siblings for this parent layer,
// checking to see if any of these layer trees obscure |this|. If so,
// remove these areas from the visible region as well. This will pick up
// chrome overlays like a tab modal prompt.
Layer* sibling;
for (sibling = layer->GetNextSibling(); sibling;
sibling = sibling->GetNextSibling()) {
gfx::Matrix siblingMatrix;
if (!sibling->GetLocalTransform().Is2D(&siblingMatrix) ||
!siblingMatrix.IsTranslation()) {
return false;
}
// Retreive the translation from sibling to |layer|. The accumulated
// visible region is currently oriented with |layer|.
IntPoint siblingOffset = RoundedToInt(siblingMatrix.GetTranslation());
nsIntRegion siblingVisibleRegion(sibling->GetEffectiveVisibleRegion());
// Translate the siblings region to |layer|'s origin.
siblingVisibleRegion.MoveBy(-siblingOffset.x, -siblingOffset.y);
// Subtract the sibling visible region from the visible region of |this|.
aResult.SubOut(siblingVisibleRegion);
}
// Keep track of the total offset for aLayerOffset. We use this in plugin
// positioning code.
offset += currentLayerOffset;
}
*aLayerOffset = nsIntPoint(offset.x, offset.y);
return true;
}
Maybe<ParentLayerIntRect>
Layer::GetCombinedClipRect() const
{
Maybe<ParentLayerIntRect> clip = GetClipRect();
for (size_t i = 0; i < mFrameMetrics.Length(); i++) {
if (!mFrameMetrics[i].HasClipRect()) {
continue;
}
const ParentLayerIntRect& other = mFrameMetrics[i].ClipRect();
if (clip) {
clip = Some(clip.value().Intersect(other));
} else {
clip = Some(other);
}
}
return clip;
}
ContainerLayer::ContainerLayer(LayerManager* aManager, void* aImplData)
: Layer(aManager, aImplData),
mFirstChild(nullptr),
mLastChild(nullptr),
mPreXScale(1.0f),
mPreYScale(1.0f),
mInheritedXScale(1.0f),
mInheritedYScale(1.0f),
mPresShellResolution(1.0f),
mScaleToResolution(false),
mUseIntermediateSurface(false),
mSupportsComponentAlphaChildren(false),
mMayHaveReadbackChild(false),
mChildrenChanged(false),
mEventRegionsOverride(EventRegionsOverride::NoOverride)
{
mContentFlags = 0; // Clear NO_TEXT, NO_TEXT_OVER_TRANSPARENT
}
ContainerLayer::~ContainerLayer() {}
bool
ContainerLayer::InsertAfter(Layer* aChild, Layer* aAfter)
{
if(aChild->Manager() != Manager()) {
NS_ERROR("Child has wrong manager");
return false;
}
if(aChild->GetParent()) {
NS_ERROR("aChild already in the tree");
return false;
}
if (aChild->GetNextSibling() || aChild->GetPrevSibling()) {
NS_ERROR("aChild already has siblings?");
return false;
}
if (aAfter && (aAfter->Manager() != Manager() ||
aAfter->GetParent() != this))
{
NS_ERROR("aAfter is not our child");
return false;
}
aChild->SetParent(this);
if (aAfter == mLastChild) {
mLastChild = aChild;
}
if (!aAfter) {
aChild->SetNextSibling(mFirstChild);
if (mFirstChild) {
mFirstChild->SetPrevSibling(aChild);
}
mFirstChild = aChild;
NS_ADDREF(aChild);
DidInsertChild(aChild);
return true;
}
Layer* next = aAfter->GetNextSibling();
aChild->SetNextSibling(next);
aChild->SetPrevSibling(aAfter);
if (next) {
next->SetPrevSibling(aChild);
}
aAfter->SetNextSibling(aChild);
NS_ADDREF(aChild);
DidInsertChild(aChild);
return true;
}
bool
ContainerLayer::RemoveChild(Layer *aChild)
{
if (aChild->Manager() != Manager()) {
NS_ERROR("Child has wrong manager");
return false;
}
if (aChild->GetParent() != this) {
NS_ERROR("aChild not our child");
return false;
}
Layer* prev = aChild->GetPrevSibling();
Layer* next = aChild->GetNextSibling();
if (prev) {
prev->SetNextSibling(next);
} else {
this->mFirstChild = next;
}
if (next) {
next->SetPrevSibling(prev);
} else {
this->mLastChild = prev;
}
aChild->SetNextSibling(nullptr);
aChild->SetPrevSibling(nullptr);
aChild->SetParent(nullptr);
this->DidRemoveChild(aChild);
NS_RELEASE(aChild);
return true;
}
bool
ContainerLayer::RepositionChild(Layer* aChild, Layer* aAfter)
{
if (aChild->Manager() != Manager()) {
NS_ERROR("Child has wrong manager");
return false;
}
if (aChild->GetParent() != this) {
NS_ERROR("aChild not our child");
return false;
}
if (aAfter && (aAfter->Manager() != Manager() ||
aAfter->GetParent() != this))
{
NS_ERROR("aAfter is not our child");
return false;
}
if (aChild == aAfter) {
NS_ERROR("aChild cannot be the same as aAfter");
return false;
}
Layer* prev = aChild->GetPrevSibling();
Layer* next = aChild->GetNextSibling();
if (prev == aAfter) {
// aChild is already in the correct position, nothing to do.
return true;
}
if (prev) {
prev->SetNextSibling(next);
} else {
mFirstChild = next;
}
if (next) {
next->SetPrevSibling(prev);
} else {
mLastChild = prev;
}
if (!aAfter) {
aChild->SetPrevSibling(nullptr);
aChild->SetNextSibling(mFirstChild);
if (mFirstChild) {
mFirstChild->SetPrevSibling(aChild);
}
mFirstChild = aChild;
return true;
}
Layer* afterNext = aAfter->GetNextSibling();
if (afterNext) {
afterNext->SetPrevSibling(aChild);
} else {
mLastChild = aChild;
}
aAfter->SetNextSibling(aChild);
aChild->SetPrevSibling(aAfter);
aChild->SetNextSibling(afterNext);
return true;
}
void
ContainerLayer::FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = ContainerLayerAttributes(mPreXScale, mPreYScale,
mInheritedXScale, mInheritedYScale,
mPresShellResolution, mScaleToResolution,
mEventRegionsOverride,
reinterpret_cast<uint64_t>(mHMDInfo.get()));
}
bool
ContainerLayer::HasMultipleChildren()
{
uint32_t count = 0;
for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
const Maybe<ParentLayerIntRect>& clipRect = child->GetEffectiveClipRect();
if (clipRect && clipRect->IsEmpty())
continue;
if (child->GetVisibleRegion().IsEmpty())
continue;
++count;
if (count > 1)
return true;
}
return false;
}
void
ContainerLayer::SortChildrenBy3DZOrder(nsTArray<Layer*>& aArray)
{
nsAutoTArray<Layer*, 10> toSort;
for (Layer* l = GetFirstChild(); l; l = l->GetNextSibling()) {
ContainerLayer* container = l->AsContainerLayer();
if (container && container->GetContentFlags() & CONTENT_PRESERVE_3D) {
toSort.AppendElement(l);
} else {
if (toSort.Length() > 0) {
SortLayersBy3DZOrder(toSort);
aArray.MoveElementsFrom(toSort);
}
aArray.AppendElement(l);
}
}
if (toSort.Length() > 0) {
SortLayersBy3DZOrder(toSort);
aArray.MoveElementsFrom(toSort);
}
}
void
ContainerLayer::DefaultComputeEffectiveTransforms(const Matrix4x4& aTransformToSurface)
{
Matrix residual;
Matrix4x4 idealTransform = GetLocalTransform() * aTransformToSurface;
idealTransform.ProjectTo2D();
mEffectiveTransform = SnapTransformTranslation(idealTransform, &residual);
bool useIntermediateSurface;
if (HasMaskLayers() ||
GetForceIsolatedGroup()) {
useIntermediateSurface = true;
#ifdef MOZ_DUMP_PAINTING
} else if (gfxUtils::sDumpPaintingIntermediate) {
useIntermediateSurface = true;
#endif
} else {
float opacity = GetEffectiveOpacity();
CompositionOp blendMode = GetEffectiveMixBlendMode();
if ((opacity != 1.0f || blendMode != CompositionOp::OP_OVER) && HasMultipleChildren()) {
useIntermediateSurface = true;
} else {
useIntermediateSurface = false;
gfx::Matrix contTransform;
if (!mEffectiveTransform.Is2D(&contTransform) ||
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
!contTransform.PreservesAxisAlignedRectangles()) {
#else
gfx::ThebesMatrix(contTransform).HasNonIntegerTranslation()) {
#endif
for (Layer* child = GetFirstChild(); child; child = child->GetNextSibling()) {
const Maybe<ParentLayerIntRect>& clipRect = child->GetEffectiveClipRect();
/* We can't (easily) forward our transform to children with a non-empty clip
* rect since it would need to be adjusted for the transform. See
* the calculations performed by CalculateScissorRect above.
* Nor for a child with a mask layer.
*/
if ((clipRect && !clipRect->IsEmpty() && !child->GetVisibleRegion().IsEmpty()) ||
child->HasMaskLayers()) {
useIntermediateSurface = true;
break;
}
}
}
}
}
mUseIntermediateSurface = useIntermediateSurface && !GetEffectiveVisibleRegion().IsEmpty();
if (useIntermediateSurface) {
ComputeEffectiveTransformsForChildren(Matrix4x4::From2D(residual));
} else {
ComputeEffectiveTransformsForChildren(idealTransform);
}
if (idealTransform.CanDraw2D()) {
ComputeEffectiveTransformForMaskLayers(aTransformToSurface);
} else {
ComputeEffectiveTransformForMaskLayers(Matrix4x4());
}
}
void
ContainerLayer::DefaultComputeSupportsComponentAlphaChildren(bool* aNeedsSurfaceCopy)
{
if (!(GetContentFlags() & Layer::CONTENT_COMPONENT_ALPHA_DESCENDANT) ||
!Manager()->AreComponentAlphaLayersEnabled()) {
mSupportsComponentAlphaChildren = false;
if (aNeedsSurfaceCopy) {
*aNeedsSurfaceCopy = false;
}
return;
}
mSupportsComponentAlphaChildren = false;
bool needsSurfaceCopy = false;
CompositionOp blendMode = GetEffectiveMixBlendMode();
if (UseIntermediateSurface()) {
if (GetEffectiveVisibleRegion().GetNumRects() == 1 &&
(GetContentFlags() & Layer::CONTENT_OPAQUE))
{
mSupportsComponentAlphaChildren = true;
} else {
gfx::Matrix transform;
if (HasOpaqueAncestorLayer(this) &&
GetEffectiveTransform().Is2D(&transform) &&
!gfx::ThebesMatrix(transform).HasNonIntegerTranslation() &&
blendMode == gfx::CompositionOp::OP_OVER) {
mSupportsComponentAlphaChildren = true;
needsSurfaceCopy = true;
}
}
} else if (blendMode == gfx::CompositionOp::OP_OVER) {
mSupportsComponentAlphaChildren =
(GetContentFlags() & Layer::CONTENT_OPAQUE) ||
(GetParent() && GetParent()->SupportsComponentAlphaChildren());
}
if (aNeedsSurfaceCopy) {
*aNeedsSurfaceCopy = mSupportsComponentAlphaChildren && needsSurfaceCopy;
}
}
void
ContainerLayer::ComputeEffectiveTransformsForChildren(const Matrix4x4& aTransformToSurface)
{
for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) {
l->ComputeEffectiveTransforms(aTransformToSurface);
}
}
/* static */ bool
ContainerLayer::HasOpaqueAncestorLayer(Layer* aLayer)
{
for (Layer* l = aLayer->GetParent(); l; l = l->GetParent()) {
if (l->GetContentFlags() & Layer::CONTENT_OPAQUE)
return true;
}
return false;
}
void
ContainerLayer::DidRemoveChild(Layer* aLayer)
{
PaintedLayer* tl = aLayer->AsPaintedLayer();
if (tl && tl->UsedForReadback()) {
for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) {
if (l->GetType() == TYPE_READBACK) {
static_cast<ReadbackLayer*>(l)->NotifyPaintedLayerRemoved(tl);
}
}
}
if (aLayer->GetType() == TYPE_READBACK) {
static_cast<ReadbackLayer*>(aLayer)->NotifyRemoved();
}
}
void
ContainerLayer::DidInsertChild(Layer* aLayer)
{
if (aLayer->GetType() == TYPE_READBACK) {
mMayHaveReadbackChild = true;
}
}
void
RefLayer::FillSpecificAttributes(SpecificLayerAttributes& aAttrs)
{
aAttrs = RefLayerAttributes(GetReferentId(), mEventRegionsOverride);
}
/**
* StartFrameTimeRecording, together with StopFrameTimeRecording
* enable recording of frame intervals.
*
* To allow concurrent consumers, a cyclic array is used which serves all
* consumers, practically stateless with regard to consumers.
*
* To save resources, the buffer is allocated on first call to StartFrameTimeRecording
* and recording is paused if no consumer which called StartFrameTimeRecording is able
* to get valid results (because the cyclic buffer was overwritten since that call).
*
* To determine availability of the data upon StopFrameTimeRecording:
* - mRecording.mNextIndex increases on each PostPresent, and never resets.
* - Cyclic buffer position is realized as mNextIndex % bufferSize.
* - StartFrameTimeRecording returns mNextIndex. When StopFrameTimeRecording is called,
* the required start index is passed as an arg, and we're able to calculate the required
* length. If this length is bigger than bufferSize, it means data was overwritten.
* otherwise, we can return the entire sequence.
* - To determine if we need to pause, mLatestStartIndex is updated to mNextIndex
* on each call to StartFrameTimeRecording. If this index gets overwritten,
* it means that all earlier start indices obtained via StartFrameTimeRecording
* were also overwritten, hence, no point in recording, so pause.
* - mCurrentRunStartIndex indicates the oldest index of the recording after which
* the recording was not paused. If StopFrameTimeRecording is invoked with a start index
* older than this, it means that some frames were not recorded, so data is invalid.
*/
uint32_t
LayerManager::StartFrameTimeRecording(int32_t aBufferSize)
{
if (mRecording.mIsPaused) {
mRecording.mIsPaused = false;
if (!mRecording.mIntervals.Length()) { // Initialize recording buffers
mRecording.mIntervals.SetLength(aBufferSize);
}
// After being paused, recent values got invalid. Update them to now.
mRecording.mLastFrameTime = TimeStamp::Now();
// Any recording which started before this is invalid, since we were paused.
mRecording.mCurrentRunStartIndex = mRecording.mNextIndex;
}
// If we'll overwrite this index, there are no more consumers with aStartIndex
// for which we're able to provide the full recording, so no point in keep recording.
mRecording.mLatestStartIndex = mRecording.mNextIndex;
return mRecording.mNextIndex;
}
void
LayerManager::RecordFrame()
{
if (!mRecording.mIsPaused) {
TimeStamp now = TimeStamp::Now();
uint32_t i = mRecording.mNextIndex % mRecording.mIntervals.Length();
mRecording.mIntervals[i] = static_cast<float>((now - mRecording.mLastFrameTime)
.ToMilliseconds());
mRecording.mNextIndex++;
mRecording.mLastFrameTime = now;
if (mRecording.mNextIndex > (mRecording.mLatestStartIndex + mRecording.mIntervals.Length())) {
// We've just overwritten the most recent recording start -> pause.
mRecording.mIsPaused = true;
}
}
}
void
LayerManager::PostPresent()
{
if (!mTabSwitchStart.IsNull()) {
Telemetry::Accumulate(Telemetry::FX_TAB_SWITCH_TOTAL_MS,
uint32_t((TimeStamp::Now() - mTabSwitchStart).ToMilliseconds()));
mTabSwitchStart = TimeStamp();
}
}
void
LayerManager::StopFrameTimeRecording(uint32_t aStartIndex,
nsTArray<float>& aFrameIntervals)
{
uint32_t bufferSize = mRecording.mIntervals.Length();
uint32_t length = mRecording.mNextIndex - aStartIndex;
if (mRecording.mIsPaused || length > bufferSize || aStartIndex < mRecording.mCurrentRunStartIndex) {
// aStartIndex is too old. Also if aStartIndex was issued before mRecordingNextIndex overflowed (uint32_t)
// and stopped after the overflow (would happen once every 828 days of constant 60fps).
length = 0;
}
if (!length) {
aFrameIntervals.Clear();
return; // empty recording, return empty arrays.
}
// Set length in advance to avoid possibly repeated reallocations
aFrameIntervals.SetLength(length);
uint32_t cyclicPos = aStartIndex % bufferSize;
for (uint32_t i = 0; i < length; i++, cyclicPos++) {
if (cyclicPos == bufferSize) {
cyclicPos = 0;
}
aFrameIntervals[i] = mRecording.mIntervals[cyclicPos];
}
}
void
LayerManager::BeginTabSwitch()
{
mTabSwitchStart = TimeStamp::Now();
}
static void PrintInfo(std::stringstream& aStream, LayerComposite* aLayerComposite);
#ifdef MOZ_DUMP_PAINTING
template <typename T>
void WriteSnapshotLinkToDumpFile(T* aObj, std::stringstream& aStream)
{
if (!aObj) {
return;
}
nsCString string(aObj->Name());
string.Append('-');
string.AppendInt((uint64_t)aObj);
aStream << nsPrintfCString("href=\"javascript:ViewImage('%s')\"", string.BeginReading()).get();
}
template <typename T>
void WriteSnapshotToDumpFile_internal(T* aObj, DataSourceSurface* aSurf)
{
nsCString string(aObj->Name());
string.Append('-');
string.AppendInt((uint64_t)aObj);
if (gfxUtils::sDumpPaintFile != stderr) {
fprintf_stderr(gfxUtils::sDumpPaintFile, "array[\"%s\"]=\"", string.BeginReading());
}
gfxUtils::DumpAsDataURI(aSurf, gfxUtils::sDumpPaintFile);
if (gfxUtils::sDumpPaintFile != stderr) {
fprintf_stderr(gfxUtils::sDumpPaintFile, "\";");
}
}
void WriteSnapshotToDumpFile(Layer* aLayer, DataSourceSurface* aSurf)
{
WriteSnapshotToDumpFile_internal(aLayer, aSurf);
}
void WriteSnapshotToDumpFile(LayerManager* aManager, DataSourceSurface* aSurf)
{
WriteSnapshotToDumpFile_internal(aManager, aSurf);
}
void WriteSnapshotToDumpFile(Compositor* aCompositor, DrawTarget* aTarget)
{
RefPtr<SourceSurface> surf = aTarget->Snapshot();
RefPtr<DataSourceSurface> dSurf = surf->GetDataSurface();
WriteSnapshotToDumpFile_internal(aCompositor, dSurf);
}
#endif
void
Layer::Dump(std::stringstream& aStream, const char* aPrefix, bool aDumpHtml)
{
if (aDumpHtml) {
aStream << nsPrintfCString("<li><a id=\"%p\" ", this).get();
#ifdef MOZ_DUMP_PAINTING
if (GetType() == TYPE_CONTAINER || GetType() == TYPE_PAINTED) {
WriteSnapshotLinkToDumpFile(this, aStream);
}
#endif
aStream << ">";
}
DumpSelf(aStream, aPrefix);
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::sDumpPainting && AsLayerComposite() && AsLayerComposite()->GetCompositableHost()) {
AsLayerComposite()->GetCompositableHost()->Dump(aStream, aPrefix, aDumpHtml);
}
#endif
if (aDumpHtml) {
aStream << "</a>";
}
if (Layer* mask = GetMaskLayer()) {
aStream << nsPrintfCString("%s Mask layer:\n", aPrefix).get();
nsAutoCString pfx(aPrefix);
pfx += " ";
mask->Dump(aStream, pfx.get(), aDumpHtml);
}
for (size_t i = 0; i < GetAncestorMaskLayerCount(); i++) {
aStream << nsPrintfCString("%s Ancestor mask layer %d:\n", aPrefix, uint32_t(i)).get();
nsAutoCString pfx(aPrefix);
pfx += " ";
GetAncestorMaskLayerAt(i)->Dump(aStream, pfx.get(), aDumpHtml);
}
#ifdef MOZ_DUMP_PAINTING
for (size_t i = 0; i < mExtraDumpInfo.Length(); i++) {
const nsCString& str = mExtraDumpInfo[i];
aStream << aPrefix << " Info:\n" << str.get();
}
#endif
if (Layer* kid = GetFirstChild()) {
nsAutoCString pfx(aPrefix);
pfx += " ";
if (aDumpHtml) {
aStream << "<ul>";
}
kid->Dump(aStream, pfx.get(), aDumpHtml);
if (aDumpHtml) {
aStream << "</ul>";
}
}
if (aDumpHtml) {
aStream << "</li>";
}
if (Layer* next = GetNextSibling())
next->Dump(aStream, aPrefix, aDumpHtml);
}
void
Layer::DumpSelf(std::stringstream& aStream, const char* aPrefix)
{
PrintInfo(aStream, aPrefix);
aStream << "\n";
}
void
Layer::Dump(layerscope::LayersPacket* aPacket, const void* aParent)
{
DumpPacket(aPacket, aParent);
if (Layer* kid = GetFirstChild()) {
kid->Dump(aPacket, this);
}
if (Layer* next = GetNextSibling()) {
next->Dump(aPacket, aParent);
}
}
void
Layer::Log(const char* aPrefix)
{
if (!IsLogEnabled())
return;
LogSelf(aPrefix);
if (Layer* kid = GetFirstChild()) {
nsAutoCString pfx(aPrefix);
pfx += " ";
kid->Log(pfx.get());
}
if (Layer* next = GetNextSibling())
next->Log(aPrefix);
}
void
Layer::LogSelf(const char* aPrefix)
{
if (!IsLogEnabled())
return;
std::stringstream ss;
PrintInfo(ss, aPrefix);
MOZ_LAYERS_LOG(("%s", ss.str().c_str()));
if (mMaskLayer) {
nsAutoCString pfx(aPrefix);
pfx += " \\ MaskLayer ";
mMaskLayer->LogSelf(pfx.get());
}
}
void
Layer::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
aStream << aPrefix;
aStream << nsPrintfCString("%s%s (0x%p)", mManager->Name(), Name(), this).get();
layers::PrintInfo(aStream, AsLayerComposite());
if (mClipRect) {
AppendToString(aStream, *mClipRect, " [clip=", "]");
}
if (1.0 != mPostXScale || 1.0 != mPostYScale) {
aStream << nsPrintfCString(" [postScale=%g, %g]", mPostXScale, mPostYScale).get();
}
if (!mTransform.IsIdentity()) {
AppendToString(aStream, mTransform, " [transform=", "]");
}
if (!mLayerBounds.IsEmpty()) {
AppendToString(aStream, mLayerBounds, " [bounds=", "]");
}
if (!mVisibleRegion.IsEmpty()) {
AppendToString(aStream, mVisibleRegion, " [visible=", "]");
} else {
aStream << " [not visible]";
}
if (!mEventRegions.IsEmpty()) {
AppendToString(aStream, mEventRegions, " ", "");
}
if (1.0 != mOpacity) {
aStream << nsPrintfCString(" [opacity=%g]", mOpacity).get();
}
if (GetContentFlags() & CONTENT_OPAQUE) {
aStream << " [opaqueContent]";
}
if (GetContentFlags() & CONTENT_COMPONENT_ALPHA) {
aStream << " [componentAlpha]";
}
if (GetScrollbarDirection() == VERTICAL) {
aStream << nsPrintfCString(" [vscrollbar=%lld]", GetScrollbarTargetContainerId()).get();
}
if (GetScrollbarDirection() == HORIZONTAL) {
aStream << nsPrintfCString(" [hscrollbar=%lld]", GetScrollbarTargetContainerId()).get();
}
if (GetIsFixedPosition()) {
aStream << nsPrintfCString(" [isFixedPosition anchor=%s margin=%f,%f,%f,%f]",
ToString(mAnchor).c_str(),
mMargins.top, mMargins.right, mMargins.bottom, mMargins.left).get();
}
if (GetIsStickyPosition()) {
aStream << nsPrintfCString(" [isStickyPosition scrollId=%d outer=%f,%f %fx%f "
"inner=%f,%f %fx%f]", mStickyPositionData->mScrollId,
mStickyPositionData->mOuter.x, mStickyPositionData->mOuter.y,
mStickyPositionData->mOuter.width, mStickyPositionData->mOuter.height,
mStickyPositionData->mInner.x, mStickyPositionData->mInner.y,
mStickyPositionData->mInner.width, mStickyPositionData->mInner.height).get();
}
if (mMaskLayer) {
aStream << nsPrintfCString(" [mMaskLayer=%p]", mMaskLayer.get()).get();
}
for (uint32_t i = 0; i < mFrameMetrics.Length(); i++) {
if (!mFrameMetrics[i].IsDefault()) {
aStream << nsPrintfCString(" [metrics%d=", i).get();
AppendToString(aStream, mFrameMetrics[i], "", "]");
}
}
}
// The static helper function sets the transform matrix into the packet
static void
DumpTransform(layerscope::LayersPacket::Layer::Matrix* aLayerMatrix, const Matrix4x4& aMatrix)
{
aLayerMatrix->set_is2d(aMatrix.Is2D());
if (aMatrix.Is2D()) {
Matrix m = aMatrix.As2D();
aLayerMatrix->set_isid(m.IsIdentity());
if (!m.IsIdentity()) {
aLayerMatrix->add_m(m._11), aLayerMatrix->add_m(m._12);
aLayerMatrix->add_m(m._21), aLayerMatrix->add_m(m._22);
aLayerMatrix->add_m(m._31), aLayerMatrix->add_m(m._32);
}
} else {
aLayerMatrix->add_m(aMatrix._11), aLayerMatrix->add_m(aMatrix._12);
aLayerMatrix->add_m(aMatrix._13), aLayerMatrix->add_m(aMatrix._14);
aLayerMatrix->add_m(aMatrix._21), aLayerMatrix->add_m(aMatrix._22);
aLayerMatrix->add_m(aMatrix._23), aLayerMatrix->add_m(aMatrix._24);
aLayerMatrix->add_m(aMatrix._31), aLayerMatrix->add_m(aMatrix._32);
aLayerMatrix->add_m(aMatrix._33), aLayerMatrix->add_m(aMatrix._34);
aLayerMatrix->add_m(aMatrix._41), aLayerMatrix->add_m(aMatrix._42);
aLayerMatrix->add_m(aMatrix._43), aLayerMatrix->add_m(aMatrix._44);
}
}
// The static helper function sets the IntRect into the packet
template <typename T, typename Sub, typename Point, typename SizeT, typename MarginT>
static void
DumpRect(layerscope::LayersPacket::Layer::Rect* aLayerRect,
const BaseRect<T, Sub, Point, SizeT, MarginT>& aRect)
{
aLayerRect->set_x(aRect.x);
aLayerRect->set_y(aRect.y);
aLayerRect->set_w(aRect.width);
aLayerRect->set_h(aRect.height);
}
// The static helper function sets the nsIntRegion into the packet
static void
DumpRegion(layerscope::LayersPacket::Layer::Region* aLayerRegion, const nsIntRegion& aRegion)
{
nsIntRegionRectIterator it(aRegion);
while (const IntRect* sr = it.Next()) {
DumpRect(aLayerRegion->add_r(), *sr);
}
}
void
Layer::DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent)
{
// Add a new layer (UnknownLayer)
using namespace layerscope;
LayersPacket::Layer* layer = aPacket->add_layer();
// Basic information
layer->set_type(LayersPacket::Layer::UnknownLayer);
layer->set_ptr(reinterpret_cast<uint64_t>(this));
layer->set_parentptr(reinterpret_cast<uint64_t>(aParent));
// Shadow
if (LayerComposite* lc = AsLayerComposite()) {
LayersPacket::Layer::Shadow* s = layer->mutable_shadow();
if (const Maybe<ParentLayerIntRect>& clipRect = lc->GetShadowClipRect()) {
DumpRect(s->mutable_clip(), *clipRect);
}
if (!lc->GetShadowTransform().IsIdentity()) {
DumpTransform(s->mutable_transform(), lc->GetShadowTransform());
}
if (!lc->GetShadowVisibleRegion().IsEmpty()) {
DumpRegion(s->mutable_vregion(), lc->GetShadowVisibleRegion());
}
}
// Clip
if (mClipRect) {
DumpRect(layer->mutable_clip(), *mClipRect);
}
// Transform
if (!mTransform.IsIdentity()) {
DumpTransform(layer->mutable_transform(), mTransform);
}
// Visible region
if (!mVisibleRegion.IsEmpty()) {
DumpRegion(layer->mutable_vregion(), mVisibleRegion);
}
// EventRegions
if (!mEventRegions.IsEmpty()) {
const EventRegions &e = mEventRegions;
if (!e.mHitRegion.IsEmpty()) {
DumpRegion(layer->mutable_hitregion(), e.mHitRegion);
}
if (!e.mDispatchToContentHitRegion.IsEmpty()) {
DumpRegion(layer->mutable_dispatchregion(), e.mDispatchToContentHitRegion);
}
if (!e.mNoActionRegion.IsEmpty()) {
DumpRegion(layer->mutable_noactionregion(), e.mNoActionRegion);
}
if (!e.mHorizontalPanRegion.IsEmpty()) {
DumpRegion(layer->mutable_hpanregion(), e.mHorizontalPanRegion);
}
if (!e.mVerticalPanRegion.IsEmpty()) {
DumpRegion(layer->mutable_vpanregion(), e.mVerticalPanRegion);
}
}
// Opacity
layer->set_opacity(mOpacity);
// Content opaque
layer->set_copaque(static_cast<bool>(GetContentFlags() & CONTENT_OPAQUE));
// Component alpha
layer->set_calpha(static_cast<bool>(GetContentFlags() & CONTENT_COMPONENT_ALPHA));
// Vertical or horizontal bar
if (GetScrollbarDirection() != NONE) {
layer->set_direct(GetScrollbarDirection() == VERTICAL ?
LayersPacket::Layer::VERTICAL :
LayersPacket::Layer::HORIZONTAL);
layer->set_barid(GetScrollbarTargetContainerId());
}
// Mask layer
if (mMaskLayer) {
layer->set_mask(reinterpret_cast<uint64_t>(mMaskLayer.get()));
}
}
void
PaintedLayer::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
Layer::PrintInfo(aStream, aPrefix);
if (!mValidRegion.IsEmpty()) {
AppendToString(aStream, mValidRegion, " [valid=", "]");
}
}
void
PaintedLayer::DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent)
{
Layer::DumpPacket(aPacket, aParent);
// get this layer data
using namespace layerscope;
LayersPacket::Layer* layer = aPacket->mutable_layer(aPacket->layer_size()-1);
layer->set_type(LayersPacket::Layer::PaintedLayer);
if (!mValidRegion.IsEmpty()) {
DumpRegion(layer->mutable_valid(), mValidRegion);
}
}
void
ContainerLayer::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
Layer::PrintInfo(aStream, aPrefix);
if (UseIntermediateSurface()) {
aStream << " [usesTmpSurf]";
}
if (1.0 != mPreXScale || 1.0 != mPreYScale) {
aStream << nsPrintfCString(" [preScale=%g, %g]", mPreXScale, mPreYScale).get();
}
if (mScaleToResolution) {
aStream << nsPrintfCString(" [presShellResolution=%g]", mPresShellResolution).get();
}
if (mEventRegionsOverride & EventRegionsOverride::ForceDispatchToContent) {
aStream << " [force-dtc]";
}
if (mEventRegionsOverride & EventRegionsOverride::ForceEmptyHitRegion) {
aStream << " [force-ehr]";
}
if (mHMDInfo) {
aStream << nsPrintfCString(" [hmd=%p]", mHMDInfo.get()).get();
}
}
void
ContainerLayer::DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent)
{
Layer::DumpPacket(aPacket, aParent);
// Get this layer data
using namespace layerscope;
LayersPacket::Layer* layer = aPacket->mutable_layer(aPacket->layer_size()-1);
layer->set_type(LayersPacket::Layer::ContainerLayer);
}
void
ColorLayer::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
Layer::PrintInfo(aStream, aPrefix);
AppendToString(aStream, mColor, " [color=", "]");
AppendToString(aStream, mBounds, " [bounds=", "]");
}
void
ColorLayer::DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent)
{
Layer::DumpPacket(aPacket, aParent);
// Get this layer data
using namespace layerscope;
LayersPacket::Layer* layer = aPacket->mutable_layer(aPacket->layer_size()-1);
layer->set_type(LayersPacket::Layer::ColorLayer);
layer->set_color(mColor.Packed());
}
void
CanvasLayer::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
Layer::PrintInfo(aStream, aPrefix);
if (mFilter != GraphicsFilter::FILTER_GOOD) {
AppendToString(aStream, mFilter, " [filter=", "]");
}
}
// This help function is used to assign the correct enum value
// to the packet
static void
DumpFilter(layerscope::LayersPacket::Layer* aLayer, const GraphicsFilter& aFilter)
{
using namespace layerscope;
switch (aFilter) {
case GraphicsFilter::FILTER_FAST:
aLayer->set_filter(LayersPacket::Layer::FILTER_FAST);
break;
case GraphicsFilter::FILTER_GOOD:
aLayer->set_filter(LayersPacket::Layer::FILTER_GOOD);
break;
case GraphicsFilter::FILTER_BEST:
aLayer->set_filter(LayersPacket::Layer::FILTER_BEST);
break;
case GraphicsFilter::FILTER_NEAREST:
aLayer->set_filter(LayersPacket::Layer::FILTER_NEAREST);
break;
case GraphicsFilter::FILTER_BILINEAR:
aLayer->set_filter(LayersPacket::Layer::FILTER_BILINEAR);
break;
case GraphicsFilter::FILTER_GAUSSIAN:
aLayer->set_filter(LayersPacket::Layer::FILTER_GAUSSIAN);
break;
default:
// ignore it
break;
}
}
void
CanvasLayer::DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent)
{
Layer::DumpPacket(aPacket, aParent);
// Get this layer data
using namespace layerscope;
LayersPacket::Layer* layer = aPacket->mutable_layer(aPacket->layer_size()-1);
layer->set_type(LayersPacket::Layer::CanvasLayer);
DumpFilter(layer, mFilter);
}
void
ImageLayer::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
Layer::PrintInfo(aStream, aPrefix);
if (mFilter != GraphicsFilter::FILTER_GOOD) {
AppendToString(aStream, mFilter, " [filter=", "]");
}
}
void
ImageLayer::DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent)
{
Layer::DumpPacket(aPacket, aParent);
// Get this layer data
using namespace layerscope;
LayersPacket::Layer* layer = aPacket->mutable_layer(aPacket->layer_size()-1);
layer->set_type(LayersPacket::Layer::ImageLayer);
DumpFilter(layer, mFilter);
}
void
RefLayer::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
ContainerLayer::PrintInfo(aStream, aPrefix);
if (0 != mId) {
AppendToString(aStream, mId, " [id=", "]");
}
}
void
RefLayer::DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent)
{
Layer::DumpPacket(aPacket, aParent);
// Get this layer data
using namespace layerscope;
LayersPacket::Layer* layer = aPacket->mutable_layer(aPacket->layer_size()-1);
layer->set_type(LayersPacket::Layer::RefLayer);
layer->set_refid(mId);
}
void
ReadbackLayer::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
Layer::PrintInfo(aStream, aPrefix);
AppendToString(aStream, mSize, " [size=", "]");
if (mBackgroundLayer) {
AppendToString(aStream, mBackgroundLayer, " [backgroundLayer=", "]");
AppendToString(aStream, mBackgroundLayerOffset, " [backgroundOffset=", "]");
} else if (mBackgroundColor.a == 1.0) {
AppendToString(aStream, mBackgroundColor, " [backgroundColor=", "]");
} else {
aStream << " [nobackground]";
}
}
void
ReadbackLayer::DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent)
{
Layer::DumpPacket(aPacket, aParent);
// Get this layer data
using namespace layerscope;
LayersPacket::Layer* layer = aPacket->mutable_layer(aPacket->layer_size()-1);
layer->set_type(LayersPacket::Layer::ReadbackLayer);
LayersPacket::Layer::Size* size = layer->mutable_size();
size->set_w(mSize.width);
size->set_h(mSize.height);
}
//--------------------------------------------------
// LayerManager
void
LayerManager::Dump(std::stringstream& aStream, const char* aPrefix, bool aDumpHtml)
{
#ifdef MOZ_DUMP_PAINTING
if (aDumpHtml) {
aStream << "<ul><li><a ";
WriteSnapshotLinkToDumpFile(this, aStream);
aStream << ">";
}
#endif
DumpSelf(aStream, aPrefix);
#ifdef MOZ_DUMP_PAINTING
if (aDumpHtml) {
aStream << "</a>";
}
#endif
nsAutoCString pfx(aPrefix);
pfx += " ";
if (!GetRoot()) {
aStream << nsPrintfCString("%s(null)", pfx.get()).get();
if (aDumpHtml) {
aStream << "</li></ul>";
}
return;
}
if (aDumpHtml) {
aStream << "<ul>";
}
GetRoot()->Dump(aStream, pfx.get(), aDumpHtml);
if (aDumpHtml) {
aStream << "</ul></li></ul>";
}
aStream << "\n";
}
void
LayerManager::DumpSelf(std::stringstream& aStream, const char* aPrefix)
{
PrintInfo(aStream, aPrefix);
aStream << "\n";
}
void
LayerManager::Dump()
{
std::stringstream ss;
Dump(ss);
print_stderr(ss);
}
void
LayerManager::Dump(layerscope::LayersPacket* aPacket)
{
DumpPacket(aPacket);
if (GetRoot()) {
GetRoot()->Dump(aPacket, this);
}
}
void
LayerManager::Log(const char* aPrefix)
{
if (!IsLogEnabled())
return;
LogSelf(aPrefix);
nsAutoCString pfx(aPrefix);
pfx += " ";
if (!GetRoot()) {
MOZ_LAYERS_LOG(("%s(null)", pfx.get()));
return;
}
GetRoot()->Log(pfx.get());
}
void
LayerManager::LogSelf(const char* aPrefix)
{
nsAutoCString str;
std::stringstream ss;
PrintInfo(ss, aPrefix);
MOZ_LAYERS_LOG(("%s", ss.str().c_str()));
}
void
LayerManager::PrintInfo(std::stringstream& aStream, const char* aPrefix)
{
aStream << aPrefix << nsPrintfCString("%sLayerManager (0x%p)", Name(), this).get();
}
void
LayerManager::DumpPacket(layerscope::LayersPacket* aPacket)
{
using namespace layerscope;
// Add a new layer data (LayerManager)
LayersPacket::Layer* layer = aPacket->add_layer();
layer->set_type(LayersPacket::Layer::LayerManager);
layer->set_ptr(reinterpret_cast<uint64_t>(this));
// Layer Tree Root
layer->set_parentptr(0);
}
/*static*/ void
LayerManager::InitLog()
{
if (!sLog)
sLog = PR_NewLogModule("Layers");
}
/*static*/ bool
LayerManager::IsLogEnabled()
{
MOZ_ASSERT(!!sLog,
"layer manager must be created before logging is allowed");
return MOZ_LOG_TEST(sLog, LogLevel::Debug);
}
void
PrintInfo(std::stringstream& aStream, LayerComposite* aLayerComposite)
{
if (!aLayerComposite) {
return;
}
if (const Maybe<ParentLayerIntRect>& clipRect = aLayerComposite->GetShadowClipRect()) {
AppendToString(aStream, *clipRect, " [shadow-clip=", "]");
}
if (!aLayerComposite->GetShadowTransform().IsIdentity()) {
AppendToString(aStream, aLayerComposite->GetShadowTransform(), " [shadow-transform=", "]");
}
if (!aLayerComposite->GetShadowVisibleRegion().IsEmpty()) {
AppendToString(aStream, aLayerComposite->GetShadowVisibleRegion(), " [shadow-visible=", "]");
}
}
void
SetAntialiasingFlags(Layer* aLayer, DrawTarget* aTarget)
{
bool permitSubpixelAA = !(aLayer->GetContentFlags() & Layer::CONTENT_DISABLE_SUBPIXEL_AA);
if (aTarget->GetFormat() != SurfaceFormat::B8G8R8A8) {
aTarget->SetPermitSubpixelAA(permitSubpixelAA);
return;
}
const IntRect& bounds = aLayer->GetVisibleRegion().GetBounds();
gfx::Rect transformedBounds = aTarget->GetTransform().TransformBounds(gfx::Rect(Float(bounds.x), Float(bounds.y),
Float(bounds.width), Float(bounds.height)));
transformedBounds.RoundOut();
IntRect intTransformedBounds;
transformedBounds.ToIntRect(&intTransformedBounds);
permitSubpixelAA &= !(aLayer->GetContentFlags() & Layer::CONTENT_COMPONENT_ALPHA) ||
aTarget->GetOpaqueRect().Contains(intTransformedBounds);
aTarget->SetPermitSubpixelAA(permitSubpixelAA);
}
IntRect
ToOutsideIntRect(const gfxRect &aRect)
{
gfxRect r = aRect;
r.RoundOut();
return IntRect(r.X(), r.Y(), r.Width(), r.Height());
}
PRLogModuleInfo* LayerManager::sLog;
} // namespace layers
} // namespace mozilla
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