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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 "LayerManagerComposite.h"
#include <stddef.h> // for size_t
#include <stdint.h> // for uint16_t, uint32_t
#include "CanvasLayerComposite.h" // for CanvasLayerComposite
#include "ColorLayerComposite.h" // for ColorLayerComposite
#include "CompositableHost.h" // for CompositableHost
#include "ContainerLayerComposite.h" // for ContainerLayerComposite, etc
#include "Diagnostics.h"
#include "FPSCounter.h" // for FPSState, FPSCounter
#include "FrameMetrics.h" // for FrameMetrics
#include "ImageLayerComposite.h" // for ImageLayerComposite
#include "Layers.h" // for Layer, ContainerLayer, etc
#include "LayerScope.h" // for LayerScope Tool
#include "LayerTreeInvalidation.h"
#include "protobuf/LayerScopePacket.pb.h" // for protobuf (LayerScope)
#include "PaintedLayerComposite.h" // for PaintedLayerComposite
#include "TiledContentHost.h"
#include "Units.h" // for ScreenIntRect
#include "UnitTransforms.h" // for ViewAs
#include "apz/src/AsyncPanZoomController.h" // for AsyncPanZoomController
#include "gfxEnv.h" // for gfxEnv
#ifdef XP_MACOSX
# include "gfxPlatformMac.h"
#endif
#include "gfxRect.h" // for gfxRect
#include "gfxUtils.h" // for frame color util
#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
#include "mozilla/ProfilerLabels.h"
#include "mozilla/RefPtr.h" // for RefPtr, already_AddRefed
#include "mozilla/StaticPrefs_gfx.h"
#include "mozilla/StaticPrefs_layers.h"
#include "mozilla/gfx/2D.h" // for DrawTarget
#include "mozilla/gfx/Matrix.h" // for Matrix4x4
#include "mozilla/gfx/Point.h" // for IntSize, Point
#include "mozilla/gfx/Rect.h" // for Rect
#include "mozilla/gfx/Types.h" // for Color, SurfaceFormat
#include "mozilla/layers/Compositor.h" // for Compositor
#include "mozilla/layers/CompositorOGL.h"
#include "mozilla/layers/CompositorTypes.h"
#include "mozilla/layers/Effects.h" // for Effect, EffectChain, etc
#include "mozilla/layers/LayerMetricsWrapper.h" // for LayerMetricsWrapper
#include "mozilla/layers/LayersTypes.h" // for etc
#include "mozilla/layers/NativeLayer.h"
#include "mozilla/layers/UiCompositorControllerParent.h"
#include "mozilla/widget/CompositorWidget.h" // for WidgetRenderingContext
#include "ipc/CompositorBench.h" // for CompositorBench
#include "ipc/SurfaceDescriptor.h"
#include "mozilla/mozalloc.h" // for operator new, etc
#include "nsAppRunner.h"
#include "mozilla/RefPtr.h" // for nsRefPtr
#include "nsCOMPtr.h" // for already_AddRefed
#include "nsDebug.h" // for NS_WARNING, etc
#include "nsISupportsImpl.h" // for Layer::AddRef, etc
#include "nsPoint.h" // for nsIntPoint
#include "nsRect.h" // for mozilla::gfx::IntRect
#include "nsRegion.h" // for nsIntRegion, etc
#if defined(MOZ_WIDGET_ANDROID)
# include <android/log.h>
# include <android/native_window.h>
# include "mozilla/jni/Utils.h"
# include "mozilla/widget/AndroidCompositorWidget.h"
# include "GLConsts.h"
# include "GLContextEGL.h"
# include "GLContextProvider.h"
# include "mozilla/Unused.h"
# include "ScopedGLHelpers.h"
#endif
#include "TextRenderer.h" // for TextRenderer
#include "mozilla/layers/CompositorBridgeParent.h"
#include "TreeTraversal.h" // for ForEachNode
#include "CompositionRecorder.h"
#ifdef USE_SKIA
# include "PaintCounter.h" // For PaintCounter
#endif
class gfxContext;
namespace mozilla {
namespace layers {
class ImageLayer;
using namespace mozilla::gfx;
using namespace mozilla::gl;
static LayerComposite* ToLayerComposite(Layer* aLayer) {
return static_cast<LayerComposite*>(aLayer->ImplData());
}
static void ClearSubtree(Layer* aLayer) {
ForEachNode<ForwardIterator>(aLayer, [](Layer* layer) {
ToLayerComposite(layer)->CleanupResources();
});
}
void LayerManagerComposite::ClearCachedResources(Layer* aSubtree) {
MOZ_ASSERT(!aSubtree || aSubtree->Manager() == this);
Layer* subtree = aSubtree ? aSubtree : mRoot.get();
if (!subtree) {
return;
}
ClearSubtree(subtree);
// FIXME [bjacob]
// XXX the old LayerManagerOGL code had a mMaybeInvalidTree that it set to
// true here. Do we need that?
}
HostLayerManager::HostLayerManager()
: mDebugOverlayWantsNextFrame(false),
mWarningLevel(0.0f),
mCompositorBridgeID(0),
mLastPaintTime(TimeDuration::Forever()),
mRenderStartTime(TimeStamp::Now()) {}
HostLayerManager::~HostLayerManager() = default;
void HostLayerManager::RecordPaintTimes(const PaintTiming& aTiming) {
mDiagnostics->RecordPaintTimes(aTiming);
}
void HostLayerManager::RecordUpdateTime(float aValue) {
mDiagnostics->RecordUpdateTime(aValue);
}
void HostLayerManager::WriteCollectedFrames() {
if (mCompositionRecorder) {
mCompositionRecorder->WriteCollectedFrames();
mCompositionRecorder = nullptr;
}
}
Maybe<CollectedFrames> HostLayerManager::GetCollectedFrames() {
Maybe<CollectedFrames> maybeFrames;
if (mCompositionRecorder) {
maybeFrames.emplace(mCompositionRecorder->GetCollectedFrames());
mCompositionRecorder = nullptr;
}
return maybeFrames;
}
/**
* LayerManagerComposite
*/
LayerManagerComposite::LayerManagerComposite(Compositor* aCompositor)
: mUnusedApzTransformWarning(false),
mDisabledApzWarning(false),
mCompositor(aCompositor),
mInTransaction(false),
mIsCompositorReady(false)
#if defined(MOZ_WIDGET_ANDROID)
,
mScreenPixelsTarget(nullptr)
#endif // defined(MOZ_WIDGET_ANDROID)
{
mTextRenderer = new TextRenderer();
mDiagnostics = MakeUnique<Diagnostics>();
MOZ_ASSERT(aCompositor);
mNativeLayerRoot = aCompositor->GetWidget()->GetNativeLayerRoot();
if (mNativeLayerRoot) {
mSurfacePoolHandle = aCompositor->GetSurfacePoolHandle();
MOZ_RELEASE_ASSERT(mSurfacePoolHandle);
}
#ifdef USE_SKIA
mPaintCounter = nullptr;
#endif
}
LayerManagerComposite::~LayerManagerComposite() { Destroy(); }
void LayerManagerComposite::Destroy() {
if (!mDestroyed) {
mCompositor->GetWidget()->CleanupWindowEffects();
if (mRoot) {
RootLayer()->Destroy();
}
mCompositor->CancelFrame();
mRoot = nullptr;
mClonedLayerTreeProperties = nullptr;
mProfilerScreenshotGrabber.Destroy();
if (mNativeLayerRoot) {
if (mGPUStatsLayer) {
mNativeLayerRoot->RemoveLayer(mGPUStatsLayer);
mGPUStatsLayer = nullptr;
}
if (mUnusedTransformWarningLayer) {
mNativeLayerRoot->RemoveLayer(mUnusedTransformWarningLayer);
mUnusedTransformWarningLayer = nullptr;
}
if (mDisabledApzWarningLayer) {
mNativeLayerRoot->RemoveLayer(mDisabledApzWarningLayer);
mDisabledApzWarningLayer = nullptr;
}
for (const auto& nativeLayer : mNativeLayers) {
mNativeLayerRoot->RemoveLayer(nativeLayer);
}
mNativeLayers.clear();
mNativeLayerRoot = nullptr;
}
mDestroyed = true;
#ifdef USE_SKIA
mPaintCounter = nullptr;
#endif
}
}
void LayerManagerComposite::UpdateRenderBounds(const IntRect& aRect) {
mRenderBounds = aRect;
}
bool LayerManagerComposite::AreComponentAlphaLayersEnabled() {
return mCompositor->GetBackendType() != LayersBackend::LAYERS_BASIC &&
mCompositor->SupportsEffect(EffectTypes::COMPONENT_ALPHA) &&
LayerManager::AreComponentAlphaLayersEnabled();
}
bool LayerManagerComposite::BeginTransaction(const nsCString& aURL) {
mInTransaction = true;
if (!mCompositor->Ready()) {
return false;
}
mIsCompositorReady = true;
return true;
}
void LayerManagerComposite::BeginTransactionWithDrawTarget(
DrawTarget* aTarget, const IntRect& aRect) {
mInTransaction = true;
if (!mCompositor->Ready()) {
return;
}
#ifdef MOZ_LAYERS_HAVE_LOG
MOZ_LAYERS_LOG(("[----- BeginTransaction"));
Log();
#endif
if (mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return;
}
mIsCompositorReady = true;
mTarget = aTarget;
mTargetBounds = aRect;
}
template <typename Units>
static IntRectTyped<Units> TransformRect(const IntRectTyped<Units>& aRect,
const Matrix& aTransform,
bool aRoundIn = false) {
if (aRect.IsEmpty()) {
return IntRectTyped<Units>();
}
Rect rect(aRect.X(), aRect.Y(), aRect.Width(), aRect.Height());
rect = aTransform.TransformBounds(rect);
if (aRoundIn) {
MOZ_ASSERT(aTransform.PreservesAxisAlignedRectangles());
rect.RoundIn();
} else {
rect.RoundOut();
}
IntRect intRect;
if (!rect.ToIntRect(&intRect)) {
intRect = IntRect::MaxIntRect();
}
return ViewAs<Units>(intRect);
}
template <typename Units>
static IntRectTyped<Units> TransformRect(const IntRectTyped<Units>& aRect,
const Matrix4x4& aTransform,
bool aRoundIn = false) {
if (aRect.IsEmpty()) {
return IntRectTyped<Units>();
}
Rect rect(aRect.X(), aRect.Y(), aRect.Width(), aRect.Height());
rect = aTransform.TransformAndClipBounds(rect, Rect::MaxIntRect());
if (aRoundIn) {
rect.RoundIn();
} else {
rect.RoundOut();
}
IntRect intRect;
if (!rect.ToIntRect(&intRect)) {
intRect = IntRect::MaxIntRect();
}
return ViewAs<Units>(intRect);
}
template <typename Units, typename MatrixType>
static IntRectTyped<Units> TransformRectRoundIn(
const IntRectTyped<Units>& aRect, const MatrixType& aTransform) {
return TransformRect(aRect, aTransform, true);
}
template <typename Units, typename MatrixType>
static void AddTransformedRegion(IntRegionTyped<Units>& aDest,
const IntRegionTyped<Units>& aSource,
const MatrixType& aTransform) {
for (auto iter = aSource.RectIter(); !iter.Done(); iter.Next()) {
aDest.Or(aDest, TransformRect(iter.Get(), aTransform));
}
aDest.SimplifyOutward(20);
}
template <typename Units, typename MatrixType>
static void AddTransformedRegionRoundIn(IntRegionTyped<Units>& aDest,
const IntRegionTyped<Units>& aSource,
const MatrixType& aTransform) {
for (auto iter = aSource.RectIter(); !iter.Done(); iter.Next()) {
aDest.Or(aDest, TransformRectRoundIn(iter.Get(), aTransform));
}
}
void LayerManagerComposite::PostProcessLayers(nsIntRegion& aOpaqueRegion) {
LayerIntRegion visible;
LayerComposite* rootComposite =
static_cast<LayerComposite*>(mRoot->AsHostLayer());
PostProcessLayers(
mRoot, aOpaqueRegion, visible,
ViewAs<RenderTargetPixel>(
rootComposite->GetShadowClipRect(),
PixelCastJustification::RenderTargetIsParentLayerForRoot),
Nothing(), true);
}
// We want to skip directly through ContainerLayers that don't have an
// intermediate surface. We compute occlusions for leaves and intermediate
// surfaces against the layer that they actually composite into so that we can
// use the final (snapped) effective transform.
static bool ShouldProcessLayer(Layer* aLayer) {
if (!aLayer->AsContainerLayer()) {
return true;
}
return aLayer->AsContainerLayer()->UseIntermediateSurface();
}
void LayerManagerComposite::PostProcessLayers(
Layer* aLayer, nsIntRegion& aOpaqueRegion, LayerIntRegion& aVisibleRegion,
const Maybe<RenderTargetIntRect>& aRenderTargetClip,
const Maybe<ParentLayerIntRect>& aClipFromAncestors,
bool aCanContributeOpaque) {
// Compute a clip that's the combination of our layer clip with the clip
// from our ancestors.
LayerComposite* composite =
static_cast<LayerComposite*>(aLayer->AsHostLayer());
Maybe<ParentLayerIntRect> layerClip = composite->GetShadowClipRect();
MOZ_ASSERT(!layerClip || !aLayer->Combines3DTransformWithAncestors(),
"The layer with a clip should not participate "
"a 3D rendering context");
Maybe<ParentLayerIntRect> outsideClip =
IntersectMaybeRects(layerClip, aClipFromAncestors);
Maybe<LayerIntRect> insideClip;
if (aLayer->Extend3DContext()) {
// If we're preserve-3d just pass the clip rect down directly, and we'll do
// the conversion at the preserve-3d leaf Layer.
if (outsideClip) {
insideClip = Some(ViewAs<LayerPixel>(
*outsideClip, PixelCastJustification::MovingDownToChildren));
}
} else if (outsideClip) {
// Convert the combined clip into our pre-transform coordinate space, so
// that it can later be intersected with our visible region.
// If our transform is a perspective, there's no meaningful insideClip rect
// we can compute (it would need to be a cone).
Matrix4x4 localTransform = aLayer->ComputeTransformToPreserve3DRoot();
if (!localTransform.HasPerspectiveComponent() && localTransform.Invert()) {
LayerRect insideClipFloat =
UntransformBy(ViewAs<ParentLayerToLayerMatrix4x4>(localTransform),
ParentLayerRect(*outsideClip), LayerRect::MaxIntRect())
.valueOr(LayerRect());
insideClipFloat.RoundOut();
LayerIntRect insideClipInt;
if (insideClipFloat.ToIntRect(&insideClipInt)) {
insideClip = Some(insideClipInt);
}
}
}
Maybe<ParentLayerIntRect> ancestorClipForChildren;
if (insideClip) {
ancestorClipForChildren = Some(ViewAs<ParentLayerPixel>(
*insideClip, PixelCastJustification::MovingDownToChildren));
}
nsIntRegion dummy;
nsIntRegion& opaqueRegion = aOpaqueRegion;
if (aLayer->Extend3DContext() || aLayer->Combines3DTransformWithAncestors()) {
opaqueRegion = dummy;
}
if (!ShouldProcessLayer(aLayer)) {
MOZ_ASSERT(aLayer->AsContainerLayer() &&
!aLayer->AsContainerLayer()->UseIntermediateSurface());
// For layers participating 3D rendering context, their visible
// region should be empty (invisible), so we pass through them
// without doing anything.
for (Layer* child = aLayer->GetLastChild(); child;
child = child->GetPrevSibling()) {
LayerComposite* childComposite =
static_cast<LayerComposite*>(child->AsHostLayer());
Maybe<RenderTargetIntRect> renderTargetClip = aRenderTargetClip;
if (childComposite->GetShadowClipRect()) {
RenderTargetIntRect clip = TransformBy(
ViewAs<ParentLayerToRenderTargetMatrix4x4>(
aLayer->GetEffectiveTransform(),
PixelCastJustification::RenderTargetIsParentLayerForRoot),
*childComposite->GetShadowClipRect());
renderTargetClip = IntersectMaybeRects(renderTargetClip, Some(clip));
}
PostProcessLayers(
child, opaqueRegion, aVisibleRegion, renderTargetClip,
ancestorClipForChildren,
aCanContributeOpaque &
!(aLayer->GetContentFlags() & Layer::CONTENT_BACKFACE_HIDDEN));
}
return;
}
nsIntRegion localOpaque;
// Treat layers on the path to the root of the 3D rendering context as
// a giant layer if it is a leaf.
Matrix4x4 transform = aLayer->GetEffectiveTransform();
Matrix transform2d;
bool canTransformOpaqueRegion = false;
// If aLayer has a simple transform (only an integer translation) then we
// can easily convert aOpaqueRegion into pre-transform coordinates and include
// that region.
if (aCanContributeOpaque &&
!(aLayer->GetContentFlags() & Layer::CONTENT_BACKFACE_HIDDEN) &&
transform.Is2D(&transform2d) &&
transform2d.PreservesAxisAlignedRectangles()) {
Matrix inverse = transform2d;
inverse.Invert();
AddTransformedRegionRoundIn(localOpaque, opaqueRegion, inverse);
canTransformOpaqueRegion = true;
}
// Save the value of localOpaque, which currently stores the region obscured
// by siblings (and uncles and such), before our descendants contribute to it.
nsIntRegion obscured = localOpaque;
// Recurse on our descendants, in front-to-back order. In this process:
// - Occlusions are computed for them, and they contribute to localOpaque.
// - They recalculate their visible regions, taking ancestorClipForChildren
// into account, and accumulate them into descendantsVisibleRegion.
LayerIntRegion descendantsVisibleRegion;
bool hasPreserve3DChild = false;
for (Layer* child = aLayer->GetLastChild(); child;
child = child->GetPrevSibling()) {
MOZ_ASSERT(aLayer->AsContainerLayer()->UseIntermediateSurface());
LayerComposite* childComposite =
static_cast<LayerComposite*>(child->AsHostLayer());
PostProcessLayers(
child, localOpaque, descendantsVisibleRegion,
ViewAs<RenderTargetPixel>(
childComposite->GetShadowClipRect(),
PixelCastJustification::RenderTargetIsParentLayerForRoot),
ancestorClipForChildren, true);
if (child->Extend3DContext()) {
hasPreserve3DChild = true;
}
}
// Recalculate our visible region.
LayerIntRegion visible = composite->GetShadowVisibleRegion();
// If we have descendants, throw away the visible region stored on this
// layer, and use the region accumulated by our descendants instead.
if (aLayer->GetFirstChild() && !hasPreserve3DChild) {
visible = descendantsVisibleRegion;
}
// Subtract any areas that we know to be opaque.
if (!obscured.IsEmpty()) {
visible.SubOut(LayerIntRegion::FromUnknownRegion(obscured));
}
// Clip the visible region using the combined clip.
if (insideClip) {
visible.AndWith(*insideClip);
}
composite->SetShadowVisibleRegion(visible);
// Transform the newly calculated visible region into our parent's space,
// apply our clip to it (if any), and accumulate it into |aVisibleRegion|
// for the caller to use.
ParentLayerIntRegion visibleParentSpace =
TransformBy(ViewAs<LayerToParentLayerMatrix4x4>(transform), visible);
aVisibleRegion.OrWith(ViewAs<LayerPixel>(
visibleParentSpace, PixelCastJustification::MovingDownToChildren));
// If we have a simple transform, then we can add our opaque area into
// aOpaqueRegion.
if (canTransformOpaqueRegion && !aLayer->HasMaskLayers() &&
aLayer->IsOpaqueForVisibility()) {
if (aLayer->IsOpaque()) {
localOpaque.OrWith(composite->GetFullyRenderedRegion());
}
nsIntRegion parentSpaceOpaque;
AddTransformedRegionRoundIn(parentSpaceOpaque, localOpaque, transform2d);
if (aRenderTargetClip) {
parentSpaceOpaque.AndWith(aRenderTargetClip->ToUnknownRect());
}
opaqueRegion.OrWith(parentSpaceOpaque);
}
}
void LayerManagerComposite::EndTransaction(const TimeStamp& aTimeStamp,
EndTransactionFlags aFlags) {
NS_ASSERTION(mInTransaction, "Didn't call BeginTransaction?");
NS_ASSERTION(!(aFlags & END_NO_COMPOSITE),
"Shouldn't get END_NO_COMPOSITE here");
mInTransaction = false;
mRenderStartTime = TimeStamp::Now();
// Ensure we read unlock textures, even if we end up
// not compositing this frame.
TextureSourceProvider::AutoReadUnlockTextures unlock(mCompositor);
if (!mIsCompositorReady) {
return;
}
mIsCompositorReady = false;
#ifdef MOZ_LAYERS_HAVE_LOG
MOZ_LAYERS_LOG((" ----- (beginning paint)"));
Log();
#endif
if (mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return;
}
// Set composition timestamp here because we need it in
// ComputeEffectiveTransforms (so the correct video frame size is picked) and
// also to compute invalid regions properly.
SetCompositionTime(aTimeStamp);
if (mRoot && !(aFlags & END_NO_IMMEDIATE_REDRAW)) {
MOZ_ASSERT(!aTimeStamp.IsNull());
UpdateAndRender();
mCompositor->FlushPendingNotifyNotUsed();
}
mTarget = nullptr;
#ifdef MOZ_LAYERS_HAVE_LOG
Log();
MOZ_LAYERS_LOG(("]----- EndTransaction"));
#endif
}
void LayerManagerComposite::SetRoot(Layer* aLayer) { mRoot = aLayer; }
void LayerManagerComposite::UpdateAndRender() {
mCompositionOpportunityId = mCompositionOpportunityId.Next();
if (gfxEnv::SkipComposition()) {
mInvalidRegion.SetEmpty();
return;
}
// The results of our drawing always go directly into a pixel buffer,
// so we don't need to pass any global transform here.
mRoot->ComputeEffectiveTransforms(gfx::Matrix4x4());
nsIntRegion opaque;
PostProcessLayers(opaque);
if (mClonedLayerTreeProperties) {
// We need to compute layer tree differences even if we're not going to
// immediately use the resulting damage area, since ComputeDifferences
// is also responsible for invalidates intermediate surfaces in
// ContainerLayers.
nsIntRegion changed;
const bool overflowed = !mClonedLayerTreeProperties->ComputeDifferences(
mRoot, changed, nullptr);
if (overflowed) {
changed = mRenderBounds;
}
mInvalidRegion.Or(mInvalidRegion, changed);
}
nsIntRegion invalid;
if (mTarget) {
// Since we're composing to an external target, we're not going to use
// the damage region from layers changes - we want to composite
// everything in the target bounds. The layers damage region has been
// stored in mInvalidRegion and will be picked up by the next window
// composite.
invalid = mTargetBounds;
} else {
if (!mClonedLayerTreeProperties) {
// If we didn't have a previous layer tree, invalidate the entire render
// area.
mInvalidRegion = mRenderBounds;
}
invalid = mInvalidRegion;
}
if (invalid.IsEmpty()) {
// Composition requested, but nothing has changed. Don't do any work.
mClonedLayerTreeProperties = LayerProperties::CloneFrom(GetRoot());
mProfilerScreenshotGrabber.NotifyEmptyFrame();
// Discard the current payloads. These payloads did not require a composite
// (they caused no changes to anything visible), so we don't want to measure
// their latency.
mPayload.Clear();
return;
}
// We don't want our debug overlay to cause more frames to happen
// so we will invalidate after we've decided if something changed.
// Only invalidate if we're not using native layers. When using native layers,
// UpdateDebugOverlayNativeLayers will repaint the appropriate layer areas.
if (!mNativeLayerRoot) {
InvalidateDebugOverlay(invalid, mRenderBounds);
}
bool rendered = Render(invalid, opaque);
#if defined(MOZ_WIDGET_ANDROID)
RenderToPresentationSurface();
#endif
if (!mTarget && rendered) {
mInvalidRegion.SetEmpty();
}
// Update cached layer tree information.
mClonedLayerTreeProperties = LayerProperties::CloneFrom(GetRoot());
}
already_AddRefed<DrawTarget> LayerManagerComposite::CreateOptimalMaskDrawTarget(
const IntSize& aSize) {
MOZ_CRASH("Should only be called on the drawing side");
return nullptr;
}
LayerComposite* LayerManagerComposite::RootLayer() const {
if (mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return nullptr;
}
return ToLayerComposite(mRoot);
}
void LayerManagerComposite::InvalidateDebugOverlay(nsIntRegion& aInvalidRegion,
const IntRect& aBounds) {
bool drawFps = StaticPrefs::layers_acceleration_draw_fps();
bool drawFrameColorBars = StaticPrefs::gfx_draw_color_bars();
if (drawFps) {
aInvalidRegion.Or(aInvalidRegion, nsIntRect(0, 0, 650, 400));
}
if (drawFrameColorBars) {
aInvalidRegion.Or(aInvalidRegion, nsIntRect(0, 0, 10, aBounds.Height()));
}
#ifdef USE_SKIA
bool drawPaintTimes = StaticPrefs::gfx_content_always_paint();
if (drawPaintTimes) {
aInvalidRegion.Or(aInvalidRegion, nsIntRect(PaintCounter::GetPaintRect()));
}
#endif
}
#ifdef USE_SKIA
void LayerManagerComposite::DrawPaintTimes(Compositor* aCompositor) {
if (!mPaintCounter) {
mPaintCounter = new PaintCounter();
}
TimeDuration compositeTime = TimeStamp::Now() - mRenderStartTime;
mPaintCounter->Draw(aCompositor, mLastPaintTime, compositeTime);
}
#endif
static Rect RectWithEdges(int32_t aTop, int32_t aRight, int32_t aBottom,
int32_t aLeft) {
return Rect(aLeft, aTop, aRight - aLeft, aBottom - aTop);
}
void LayerManagerComposite::DrawBorder(const IntRect& aOuter,
int32_t aBorderWidth,
const DeviceColor& aColor,
const Matrix4x4& aTransform) {
EffectChain effects;
effects.mPrimaryEffect = new EffectSolidColor(aColor);
IntRect inner(aOuter);
inner.Deflate(aBorderWidth);
// Top and bottom border sides
mCompositor->DrawQuad(
RectWithEdges(aOuter.Y(), aOuter.XMost(), inner.Y(), aOuter.X()), aOuter,
effects, 1, aTransform);
mCompositor->DrawQuad(
RectWithEdges(inner.YMost(), aOuter.XMost(), aOuter.YMost(), aOuter.X()),
aOuter, effects, 1, aTransform);
// Left and right border sides
mCompositor->DrawQuad(
RectWithEdges(inner.Y(), inner.X(), inner.YMost(), aOuter.X()), aOuter,
effects, 1, aTransform);
mCompositor->DrawQuad(
RectWithEdges(inner.Y(), aOuter.XMost(), inner.YMost(), inner.XMost()),
aOuter, effects, 1, aTransform);
}
void LayerManagerComposite::DrawTranslationWarningOverlay(
const IntRect& aBounds) {
// Black blorder
IntRect blackBorderBounds(aBounds);
blackBorderBounds.Deflate(4);
DrawBorder(blackBorderBounds, 6, DeviceColor(0, 0, 0, 1), Matrix4x4());
// Warning border, yellow to red
IntRect warnBorder(aBounds);
warnBorder.Deflate(5);
DrawBorder(warnBorder, 4, DeviceColor(1, 1.f - mWarningLevel, 0, 1),
Matrix4x4());
}
static uint16_t sFrameCount = 0;
void LayerManagerComposite::RenderDebugOverlay(const IntRect& aBounds) {
bool drawFps = StaticPrefs::layers_acceleration_draw_fps();
bool drawFrameColorBars = StaticPrefs::gfx_draw_color_bars();
// Don't draw diagnostic overlays if we want to snapshot the output.
if (mTarget) {
return;
}
if (drawFps) {
#ifdef ANDROID
// Draw a translation delay warning overlay
if (!mWarnTime.IsNull() && (TimeStamp::Now() - mWarnTime).ToMilliseconds() <
kVisualWarningDuration) {
DrawTranslationWarningOverlay(aBounds);
SetDebugOverlayWantsNextFrame(true);
}
#endif
GPUStats stats;
stats.mScreenPixels = mRenderBounds.Width() * mRenderBounds.Height();
mCompositor->GetFrameStats(&stats);
std::string text = mDiagnostics->GetFrameOverlayString(stats);
mTextRenderer->RenderText(mCompositor, text, IntPoint(2, 5), Matrix4x4(),
24, 600, TextRenderer::FontType::FixedWidth);
float alpha = 1;
if (mUnusedApzTransformWarning) {
// If we have an unused APZ transform on this composite, draw a 20x20 red
// box in the top-right corner
EffectChain effects;
effects.mPrimaryEffect =
new EffectSolidColor(gfx::DeviceColor(1, 0, 0, 1));
mCompositor->DrawQuad(gfx::Rect(aBounds.Width() - 20, 0, 20, 20), aBounds,
effects, alpha, gfx::Matrix4x4());
mUnusedApzTransformWarning = false;
SetDebugOverlayWantsNextFrame(true);
}
if (mDisabledApzWarning) {
// If we have a disabled APZ on this composite, draw a 20x20 yellow box
// in the top-right corner, to the left of the unused-apz-transform
// warning box
EffectChain effects;
effects.mPrimaryEffect =
new EffectSolidColor(gfx::DeviceColor(1, 1, 0, 1));
mCompositor->DrawQuad(gfx::Rect(aBounds.Width() - 40, 0, 20, 20), aBounds,
effects, alpha, gfx::Matrix4x4());
mDisabledApzWarning = false;
SetDebugOverlayWantsNextFrame(true);
}
}
if (drawFrameColorBars) {
gfx::IntRect sideRect(0, 0, 10, aBounds.Height());
EffectChain effects;
effects.mPrimaryEffect =
new EffectSolidColor(gfxUtils::GetColorForFrameNumber(sFrameCount));
mCompositor->DrawQuad(Rect(sideRect), sideRect, effects, 1.0,
gfx::Matrix4x4());
// We intentionally overflow at 2^16.
sFrameCount++;
}
#ifdef USE_SKIA
bool drawPaintTimes = StaticPrefs::gfx_content_always_paint();
if (drawPaintTimes) {
DrawPaintTimes(mCompositor);
}
#endif
}
void LayerManagerComposite::UpdateDebugOverlayNativeLayers() {
// Remove all debug layers first because PlaceNativeLayers might have changed
// the z-order. By removing and re-adding, we keep the debug overlay layers
// on top.
if (mGPUStatsLayer) {
mNativeLayerRoot->RemoveLayer(mGPUStatsLayer);
}
if (mUnusedTransformWarningLayer) {
mNativeLayerRoot->RemoveLayer(mUnusedTransformWarningLayer);
}
if (mDisabledApzWarningLayer) {
mNativeLayerRoot->RemoveLayer(mDisabledApzWarningLayer);
}
bool drawFps = StaticPrefs::layers_acceleration_draw_fps();
if (drawFps) {
GPUStats stats;
stats.mScreenPixels = mRenderBounds.Area();
mCompositor->GetFrameStats(&stats);
std::string text = mDiagnostics->GetFrameOverlayString(stats);
IntSize size = mTextRenderer->ComputeSurfaceSize(
text, 600, TextRenderer::FontType::FixedWidth);
if (!mGPUStatsLayer || mGPUStatsLayer->GetSize() != size) {
mGPUStatsLayer =
mNativeLayerRoot->CreateLayer(size, false, mSurfacePoolHandle);
}
mGPUStatsLayer->SetPosition(IntPoint(2, 5));
IntRect bounds({}, size);
RefPtr<DrawTarget> dt = mGPUStatsLayer->NextSurfaceAsDrawTarget(
bounds, bounds, BackendType::SKIA);
mTextRenderer->RenderTextToDrawTarget(dt, text, 600,
TextRenderer::FontType::FixedWidth);
mGPUStatsLayer->NotifySurfaceReady();
mNativeLayerRoot->AppendLayer(mGPUStatsLayer);
IntSize square(20, 20);
// The two warning layers are created on demand and their content is only
// drawn once. After that, they only get moved (if the window size changes)
// and conditionally shown.
// The drawing would be unnecessary if we had native "color layers".
if (mUnusedApzTransformWarning) {
// If we have an unused APZ transform on this composite, draw a 20x20 red
// box in the top-right corner.
if (!mUnusedTransformWarningLayer) {
mUnusedTransformWarningLayer =
mNativeLayerRoot->CreateLayer(square, true, mSurfacePoolHandle);
RefPtr<DrawTarget> dt =
mUnusedTransformWarningLayer->NextSurfaceAsDrawTarget(
IntRect({}, square), IntRect({}, square), BackendType::SKIA);
dt->FillRect(Rect(0, 0, 20, 20), ColorPattern(DeviceColor(1, 0, 0, 1)));
mUnusedTransformWarningLayer->NotifySurfaceReady();
}
mUnusedTransformWarningLayer->SetPosition(
IntPoint(mRenderBounds.XMost() - 20, mRenderBounds.Y()));
mNativeLayerRoot->AppendLayer(mUnusedTransformWarningLayer);
mUnusedApzTransformWarning = false;
SetDebugOverlayWantsNextFrame(true);
}
if (mDisabledApzWarning) {
// If we have a disabled APZ on this composite, draw a 20x20 yellow box
// in the top-right corner, to the left of the unused-apz-transform
// warning box.
if (!mDisabledApzWarningLayer) {
mDisabledApzWarningLayer =
mNativeLayerRoot->CreateLayer(square, true, mSurfacePoolHandle);
RefPtr<DrawTarget> dt =
mDisabledApzWarningLayer->NextSurfaceAsDrawTarget(
IntRect({}, square), IntRect({}, square), BackendType::SKIA);
dt->FillRect(Rect(0, 0, 20, 20), ColorPattern(DeviceColor(1, 1, 0, 1)));
mDisabledApzWarningLayer->NotifySurfaceReady();
}
mDisabledApzWarningLayer->SetPosition(
IntPoint(mRenderBounds.XMost() - 40, mRenderBounds.Y()));
mNativeLayerRoot->AppendLayer(mDisabledApzWarningLayer);
mDisabledApzWarning = false;
SetDebugOverlayWantsNextFrame(true);
}
} else {
mGPUStatsLayer = nullptr;
mUnusedTransformWarningLayer = nullptr;
mDisabledApzWarningLayer = nullptr;
}
}
RefPtr<CompositingRenderTarget>
LayerManagerComposite::PushGroupForLayerEffects() {
// This is currently true, so just making sure that any new use of this
// method is flagged for investigation
MOZ_ASSERT(StaticPrefs::layers_effect_invert() ||
StaticPrefs::layers_effect_grayscale() ||
StaticPrefs::layers_effect_contrast() != 0.0);
RefPtr<CompositingRenderTarget> previousTarget =
mCompositor->GetCurrentRenderTarget();
// make our render target the same size as the destination target
// so that we don't have to change size if the drawing area changes.
IntRect rect(previousTarget->GetOrigin(), previousTarget->GetSize());
// XXX: I'm not sure if this is true or not...
MOZ_ASSERT(rect.IsEqualXY(0, 0));
if (!mTwoPassTmpTarget ||
mTwoPassTmpTarget->GetSize() != previousTarget->GetSize() ||
mTwoPassTmpTarget->GetOrigin() != previousTarget->GetOrigin()) {
mTwoPassTmpTarget = mCompositor->CreateRenderTarget(rect, INIT_MODE_NONE);
}
MOZ_ASSERT(mTwoPassTmpTarget);
mCompositor->SetRenderTarget(mTwoPassTmpTarget);
return previousTarget;
}
void LayerManagerComposite::PopGroupForLayerEffects(
RefPtr<CompositingRenderTarget> aPreviousTarget, IntRect aClipRect,
bool aGrayscaleEffect, bool aInvertEffect, float aContrastEffect) {
MOZ_ASSERT(mTwoPassTmpTarget);
// This is currently true, so just making sure that any new use of this
// method is flagged for investigation
MOZ_ASSERT(aInvertEffect || aGrayscaleEffect || aContrastEffect != 0.0);
mCompositor->SetRenderTarget(aPreviousTarget);
EffectChain effectChain(RootLayer());
Matrix5x4 effectMatrix;
if (aGrayscaleEffect) {
// R' = G' = B' = luminance
// R' = 0.2126*R + 0.7152*G + 0.0722*B
// G' = 0.2126*R + 0.7152*G + 0.0722*B
// B' = 0.2126*R + 0.7152*G + 0.0722*B
Matrix5x4 grayscaleMatrix(0.2126f, 0.2126f, 0.2126f, 0, 0.7152f, 0.7152f,
0.7152f, 0, 0.0722f, 0.0722f, 0.0722f, 0, 0, 0, 0,
1, 0, 0, 0, 0);
effectMatrix = grayscaleMatrix;
}
if (aInvertEffect) {
// R' = 1 - R
// G' = 1 - G
// B' = 1 - B
Matrix5x4 colorInvertMatrix(-1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0,
1, 1, 1, 1, 0);
effectMatrix = effectMatrix * colorInvertMatrix;
}
if (aContrastEffect != 0.0) {
// Multiplying with:
// R' = (1 + c) * (R - 0.5) + 0.5
// G' = (1 + c) * (G - 0.5) + 0.5
// B' = (1 + c) * (B - 0.5) + 0.5
float cP1 = aContrastEffect + 1;
float hc = 0.5 * aContrastEffect;
Matrix5x4 contrastMatrix(cP1, 0, 0, 0, 0, cP1, 0, 0, 0, 0, cP1, 0, 0, 0, 0,
1, -hc, -hc, -hc, 0);
effectMatrix = effectMatrix * contrastMatrix;
}
effectChain.mPrimaryEffect = new EffectRenderTarget(mTwoPassTmpTarget);
effectChain.mSecondaryEffects[EffectTypes::COLOR_MATRIX] =
new EffectColorMatrix(effectMatrix);
mCompositor->DrawQuad(Rect(Point(0, 0), Size(mTwoPassTmpTarget->GetSize())),
aClipRect, effectChain, 1., Matrix4x4());
}
void LayerManagerComposite::PlaceNativeLayers(
const IntRegion& aRegion, bool aOpaque,
std::deque<RefPtr<NativeLayer>>* aLayersToRecycle,
IntRegion* aWindowInvalidRegion) {
IntSize tileSize(StaticPrefs::layers_compositing_tiles_width(),
StaticPrefs::layers_compositing_tiles_height());
IntRect regionBounds = aRegion.GetBounds();
for (int32_t y = 0; y < regionBounds.YMost(); y += tileSize.height) {
for (int32_t x = 0; x < regionBounds.XMost(); x += tileSize.width) {
IntRegion tileRegion;
tileRegion.And(aRegion, IntRect(IntPoint(x, y), tileSize));
for (auto iter = tileRegion.RectIter(); !iter.Done(); iter.Next()) {
PlaceNativeLayer(iter.Get(), aOpaque, aLayersToRecycle,
aWindowInvalidRegion);
}
}
}
}
void LayerManagerComposite::PlaceNativeLayer(
const IntRect& aRect, bool aOpaque,
std::deque<RefPtr<NativeLayer>>* aLayersToRecycle,
IntRegion* aWindowInvalidRegion) {
RefPtr<NativeLayer> layer;
if (aLayersToRecycle->empty() ||
aLayersToRecycle->front()->GetSize() != aRect.Size() ||
aLayersToRecycle->front()->IsOpaque() != aOpaque) {
layer = mNativeLayerRoot->CreateLayer(aRect.Size(), aOpaque,
mSurfacePoolHandle);
mNativeLayerRoot->AppendLayer(layer);
aWindowInvalidRegion->OrWith(aRect);
} else {
layer = aLayersToRecycle->front();
aLayersToRecycle->pop_front();
IntRect oldRect = layer->GetRect();
if (!aRect.IsEqualInterior(oldRect)) {
aWindowInvalidRegion->OrWith(oldRect);
aWindowInvalidRegion->OrWith(aRect);
}
}
layer->SetPosition(aRect.TopLeft());
mNativeLayers.push_back(layer);
}
// Used to clear the 'mLayerComposited' flag at the beginning of each Render().
static void ClearLayerFlags(Layer* aLayer) {
ForEachNode<ForwardIterator>(aLayer, [](Layer* layer) {
if (layer->AsHostLayer()) {
static_cast<LayerComposite*>(layer->AsHostLayer())
->SetLayerComposited(false);
}
});
}
bool LayerManagerComposite::Render(const nsIntRegion& aInvalidRegion,
const nsIntRegion& aOpaqueRegion) {
AUTO_PROFILER_LABEL("LayerManagerComposite::Render", GRAPHICS);
if (mDestroyed || !mCompositor || mCompositor->IsDestroyed()) {
NS_WARNING("Call on destroyed layer manager");
return false;
}
mCompositor->RequestAllowFrameRecording(!!mCompositionRecorder);
ClearLayerFlags(mRoot);
// At this time, it doesn't really matter if these preferences change
// during the execution of the function; we should be safe in all
// permutations. However, may as well just get the values onces and
// then use them, just in case the consistency becomes important in
// the future.
bool invertVal = StaticPrefs::layers_effect_invert();
bool grayscaleVal = StaticPrefs::layers_effect_grayscale();
float contrastVal = StaticPrefs::layers_effect_contrast();
bool haveLayerEffects = (invertVal || grayscaleVal || contrastVal != 0.0);
// Set LayerScope begin/end frame
LayerScopeAutoFrame frame(PR_Now());
// If you're looking for the code to dump the layer tree, it was moved
// to CompositorBridgeParent::CompositeToTarget().
// Dump to LayerScope Viewer
if (LayerScope::CheckSendable()) {
// Create a LayersPacket, dump Layers into it and transfer the
// packet('s ownership) to LayerScope.
auto packet = MakeUnique<layerscope::Packet>();
layerscope::LayersPacket* layersPacket = packet->mutable_layers();
this->Dump(layersPacket);
LayerScope::SendLayerDump(std::move(packet));
}
mozilla::widget::WidgetRenderingContext widgetContext;
#if defined(XP_MACOSX)
if (CompositorOGL* compositorOGL = mCompositor->AsCompositorOGL()) {
widgetContext.mGL = compositorOGL->gl();
}
#endif
{
AUTO_PROFILER_LABEL("LayerManagerComposite::Render:Prerender", GRAPHICS);
if (!mCompositor->GetWidget()->PreRender(&widgetContext)) {
return false;
}
}
CompositorBench(mCompositor, mRenderBounds);
MOZ_ASSERT(mRoot->GetOpacity() == 1);
#if defined(MOZ_WIDGET_ANDROID)
LayerMetricsWrapper wrapper = GetRootContentLayer();
if (wrapper) {
mCompositor->SetClearColor(wrapper.Metadata().GetBackgroundColor());
} else {
mCompositor->SetClearColorToDefault();
}
#endif
Maybe<IntRect> rootLayerClip = mRoot->GetClipRect().map(
[](const ParentLayerIntRect& r) { return r.ToUnknownRect(); });
Maybe<IntRect> maybeBounds;
bool usingNativeLayers = false;
if (mTarget) {
maybeBounds = mCompositor->BeginFrameForTarget(
aInvalidRegion, rootLayerClip, mRenderBounds, aOpaqueRegion, mTarget,
mTargetBounds);
} else if (mNativeLayerRoot) {
mSurfacePoolHandle->OnBeginFrame();
if (aInvalidRegion.Intersects(mRenderBounds)) {
mCompositor->BeginFrameForNativeLayers();
maybeBounds = Some(mRenderBounds);
usingNativeLayers = true;
}
} else {
maybeBounds = mCompositor->BeginFrameForWindow(
aInvalidRegion, rootLayerClip, mRenderBounds, aOpaqueRegion);
}
if (!maybeBounds) {
mProfilerScreenshotGrabber.NotifyEmptyFrame();
mCompositor->GetWidget()->PostRender(&widgetContext);
// Discard the current payloads. These payloads did not require a composite
// (they caused no changes to anything visible), so we don't want to measure
// their latency.
mPayload.Clear();
return true;
}
IntRect bounds = *maybeBounds;
IntRect clipRect = rootLayerClip.valueOr(bounds);
// Prepare our layers.
{
Diagnostics::Record record(mRenderStartTime);
RootLayer()->Prepare(RenderTargetIntRect::FromUnknownRect(clipRect));
if (record.Recording()) {
mDiagnostics->RecordPrepareTime(record.Duration());
}
}
auto RenderOnce = [&](const IntRect& aClipRect) {
RefPtr<CompositingRenderTarget> previousTarget;
if (haveLayerEffects) {
previousTarget = PushGroupForLayerEffects();
} else {
mTwoPassTmpTarget = nullptr;
}
// Execute draw commands.
RootLayer()->RenderLayer(aClipRect, Nothing());
if (mTwoPassTmpTarget) {
MOZ_ASSERT(haveLayerEffects);
PopGroupForLayerEffects(previousTarget, aClipRect, grayscaleVal,
invertVal, contrastVal);
}
if (!mRegionToClear.IsEmpty()) {
for (auto iter = mRegionToClear.RectIter(); !iter.Done(); iter.Next()) {
mCompositor->ClearRect(Rect(iter.Get()));
}
}
mCompositor->NormalDrawingDone();
};
{
Diagnostics::Record record;
if (usingNativeLayers) {
// Update the placement of our native layers, so that transparent and
// opaque parts of the window are covered by different layers and we can
// update those parts separately.
IntRegion opaqueRegion;
opaqueRegion.And(aOpaqueRegion, mRenderBounds);
// Limit the complexity of these regions. Usually, opaqueRegion should be
// only one or two rects, so this SimplifyInward call will not change the
// region if everything looks as expected.
opaqueRegion.SimplifyInward(4);
IntRegion transparentRegion;
transparentRegion.Sub(mRenderBounds, opaqueRegion);
std::deque<RefPtr<NativeLayer>> layersToRecycle =
std::move(mNativeLayers);
IntRegion invalidRegion = aInvalidRegion;
PlaceNativeLayers(opaqueRegion, true, &layersToRecycle, &invalidRegion);
PlaceNativeLayers(transparentRegion, false, &layersToRecycle,
&invalidRegion);
for (const auto& unusedLayer : layersToRecycle) {
mNativeLayerRoot->RemoveLayer(unusedLayer);
}
for (const auto& nativeLayer : mNativeLayers) {
Maybe<IntRect> maybeLayerRect =
mCompositor->BeginRenderingToNativeLayer(
invalidRegion, rootLayerClip, aOpaqueRegion, nativeLayer);
if (!maybeLayerRect) {
continue;
}
if (rootLayerClip) {
RenderOnce(rootLayerClip->Intersect(*maybeLayerRect));
} else {
RenderOnce(*maybeLayerRect);
}
mCompositor->EndRenderingToNativeLayer();
}
} else {
RenderOnce(clipRect);
}
if (record.Recording()) {
mDiagnostics->RecordCompositeTime(record.Duration());
}
}
RootLayer()->Cleanup();
WindowLMC window(mCompositor);
mProfilerScreenshotGrabber.MaybeGrabScreenshot(window, bounds.Size());
if (mCompositionRecorder) {
bool hasContentPaint = std::any_of(
mPayload.begin(), mPayload.end(), [](CompositionPayload& payload) {
return payload.mType == CompositionPayloadType::eContentPaint;
});
if (hasContentPaint) {
if (RefPtr<RecordedFrame> frame =
mCompositor->RecordFrame(TimeStamp::Now())) {
mCompositionRecorder->RecordFrame(frame);
}
}
}
if (usingNativeLayers) {
UpdateDebugOverlayNativeLayers();
} else {
#if defined(MOZ_WIDGET_ANDROID)
HandlePixelsTarget();
#endif // defined(MOZ_WIDGET_ANDROID)
// Debugging
RenderDebugOverlay(bounds);
}
{
AUTO_PROFILER_LABEL("LayerManagerComposite::Render:EndFrame", GRAPHICS);
mCompositor->EndFrame();
if (usingNativeLayers) {
mNativeLayerRoot->CommitToScreen();
}
}
mCompositor->GetWidget()->PostRender(&widgetContext);
mProfilerScreenshotGrabber.MaybeProcessQueue();
RecordFrame();
PayloadPresented(TimeStamp::Now());
// Our payload has now been presented.
mPayload.Clear();
if (usingNativeLayers) {
mSurfacePoolHandle->OnEndFrame();
}
mCompositor->WaitForGPU();
return true;
}
#if defined(MOZ_WIDGET_ANDROID)
class ScopedCompostitorSurfaceSize {
public:
ScopedCompostitorSurfaceSize(CompositorOGL* aCompositor,
const gfx::IntSize& aSize)
: mCompositor(aCompositor),
mOriginalSize(mCompositor->GetDestinationSurfaceSize()) {
mCompositor->SetDestinationSurfaceSize(aSize);
}
~ScopedCompostitorSurfaceSize() {
mCompositor->SetDestinationSurfaceSize(mOriginalSize);
}
private:
CompositorOGL* const mCompositor;
const gfx::IntSize mOriginalSize;
};
class ScopedContextSurfaceOverride {
public:
ScopedContextSurfaceOverride(GLContextEGL* aContext, void* aSurface)
: mContext(aContext) {
MOZ_ASSERT(aSurface);
mContext->SetEGLSurfaceOverride(aSurface);
mContext->MakeCurrent(true);
}
~ScopedContextSurfaceOverride() {
mContext->SetEGLSurfaceOverride(EGL_NO_SURFACE);
mContext->MakeCurrent(true);
}
private:
GLContextEGL* const mContext;
};
void LayerManagerComposite::RenderToPresentationSurface() {
if (!mCompositor) {
return;
}
widget::CompositorWidget* const widget = mCompositor->GetWidget();
if (!widget) {
return;
}
ANativeWindow* window = widget->AsAndroid()->GetPresentationANativeWindow();
if (!window) {
return;
}
CompositorOGL* compositor = mCompositor->AsCompositorOGL();
GLContext* gl = compositor->gl();
GLContextEGL* egl = GLContextEGL::Cast(gl);
if (!egl) {
return;
}
EGLSurface surface = widget->AsAndroid()->GetPresentationEGLSurface();
if (!surface) {
// create surface;
surface = egl->CreateCompatibleSurface(window);
if (!surface) {
return;
}
widget->AsAndroid()->SetPresentationEGLSurface(surface);
}
const IntSize windowSize(ANativeWindow_getWidth(window),
ANativeWindow_getHeight(window));
if ((windowSize.width <= 0) || (windowSize.height <= 0)) {
return;
}
ScreenRotation rotation = compositor->GetScreenRotation();
const int actualWidth = windowSize.width;
const int actualHeight = windowSize.height;
const gfx::IntSize originalSize = compositor->GetDestinationSurfaceSize();
const nsIntRect originalRect =
nsIntRect(0, 0, originalSize.width, originalSize.height);
int pageWidth = originalSize.width;
int pageHeight = originalSize.height;
if (rotation == ROTATION_90 || rotation == ROTATION_270) {
pageWidth = originalSize.height;
pageHeight = originalSize.width;
}
float scale = 1.0;
if ((pageWidth > actualWidth) || (pageHeight > actualHeight)) {
const float scaleWidth = (float)actualWidth / (float)pageWidth;
const float scaleHeight = (float)actualHeight / (float)pageHeight;
scale = scaleWidth <= scaleHeight ? scaleWidth : scaleHeight;
}
const gfx::IntSize actualSize(actualWidth, actualHeight);
ScopedCompostitorSurfaceSize overrideSurfaceSize(compositor, actualSize);
const ScreenPoint offset((actualWidth - (int)(scale * pageWidth)) / 2, 0);
ScopedContextSurfaceOverride overrideSurface(egl, surface);
Matrix viewMatrix = ComputeTransformForRotation(originalRect, rotation);
viewMatrix.Invert(); // unrotate
viewMatrix.PostScale(scale, scale);
viewMatrix.PostTranslate(offset.x, offset.y);
Matrix4x4 matrix = Matrix4x4::From2D(viewMatrix);
mRoot->ComputeEffectiveTransforms(matrix);
nsIntRegion opaque;
PostProcessLayers(opaque);
nsIntRegion invalid;
IntRect bounds = IntRect::Truncate(0, 0, scale * pageWidth, actualHeight);
MOZ_ASSERT(mRoot->GetOpacity() == 1);
Unused << mCompositor->BeginFrameForWindow(invalid, Nothing(), bounds,
nsIntRegion());
// The Java side of Fennec sets a scissor rect that accounts for
// chrome such as the URL bar. Override that so that the entire frame buffer
// is cleared.
ScopedScissorRect scissorRect(egl, 0, 0, actualWidth, actualHeight);
egl->fClearColor(0.0, 0.0, 0.0, 0.0);
egl->fClear(LOCAL_GL_COLOR_BUFFER_BIT);
const IntRect clipRect = IntRect::Truncate(0, 0, actualWidth, actualHeight);
RootLayer()->Prepare(RenderTargetIntRect::FromUnknownRect(clipRect));
RootLayer()->RenderLayer(clipRect, Nothing());
mCompositor->EndFrame();
}
// Used by robocop tests to get a snapshot of the frame buffer.
void LayerManagerComposite::HandlePixelsTarget() {
if (!mScreenPixelsTarget) {
return;
}
int32_t bufferWidth = mRenderBounds.width;
int32_t bufferHeight = mRenderBounds.height;
ipc::Shmem mem;
if (!mScreenPixelsTarget->AllocPixelBuffer(
bufferWidth * bufferHeight * sizeof(uint32_t), &mem)) {
// Failed to alloc shmem, Just bail out.
return;
}
CompositorOGL* compositor = mCompositor->AsCompositorOGL();
GLContext* gl = compositor->gl();
MOZ_ASSERT(gl);
gl->fReadPixels(0, 0, bufferWidth, bufferHeight, LOCAL_GL_RGBA,
LOCAL_GL_UNSIGNED_BYTE, mem.get<uint8_t>());
Unused << mScreenPixelsTarget->SendScreenPixels(
std::move(mem), ScreenIntSize(bufferWidth, bufferHeight), true);
mScreenPixelsTarget = nullptr;
}
#endif
already_AddRefed<PaintedLayer> LayerManagerComposite::CreatePaintedLayer() {
if (mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return nullptr;
}
return RefPtr<PaintedLayer>(new PaintedLayerComposite(this)).forget();
}
already_AddRefed<ContainerLayer> LayerManagerComposite::CreateContainerLayer() {
if (mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return nullptr;
}
return RefPtr<ContainerLayer>(new ContainerLayerComposite(this)).forget();
}
already_AddRefed<ImageLayer> LayerManagerComposite::CreateImageLayer() {
if (mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return nullptr;
}
return RefPtr<ImageLayer>(new ImageLayerComposite(this)).forget();
}
already_AddRefed<ColorLayer> LayerManagerComposite::CreateColorLayer() {
if (LayerManagerComposite::mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return nullptr;
}
return RefPtr<ColorLayer>(new ColorLayerComposite(this)).forget();
}
already_AddRefed<CanvasLayer> LayerManagerComposite::CreateCanvasLayer() {
if (LayerManagerComposite::mDestroyed) {
NS_WARNING("Call on destroyed layer manager");
return nullptr;
}
return RefPtr<CanvasLayer>(new CanvasLayerComposite(this)).forget();
}