nagai/fune
3
0
Fork 0
forked from mirrors/gecko-dev
Code Pull requests Activity
fune/gfx/layers/wr/WebRenderCommandBuilder.cpp
Miko Mynttinen 2ab05c6458 Bug 1526941 - Part 4: Remove mStoredList from nsDisplayTransform r=mattwoodrow 
Differential Revision: https://phabricator.services.mozilla.com/D21187

--HG--
extra : moz-landing-system : lando
2019-03-07 17:13:17 +00:00

2490 lines
98 KiB
C++
Raw Blame History

/* -*- 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 "WebRenderCommandBuilder.h"
#include "BasicLayers.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/gfx/Types.h"
#include "mozilla/layers/ClipManager.h"
#include "mozilla/layers/ImageClient.h"
#include "mozilla/layers/RenderRootStateManager.h"
#include "mozilla/layers/WebRenderBridgeChild.h"
#include "mozilla/layers/WebRenderLayerManager.h"
#include "mozilla/layers/IpcResourceUpdateQueue.h"
#include "mozilla/layers/SharedSurfacesChild.h"
#include "mozilla/layers/SourceSurfaceSharedData.h"
#include "mozilla/layers/StackingContextHelper.h"
#include "mozilla/layers/UpdateImageHelper.h"
#include "mozilla/layers/WebRenderDrawEventRecorder.h"
#include "UnitTransforms.h"
#include "gfxEnv.h"
#include "nsDisplayListInvalidation.h"
#include "WebRenderCanvasRenderer.h"
#include "LayersLogging.h"
#include "LayerTreeInvalidation.h"
namespace mozilla {
namespace layers {
using namespace gfx;
static bool PaintByLayer(nsDisplayItem* aItem,
nsDisplayListBuilder* aDisplayListBuilder,
const RefPtr<BasicLayerManager>& aManager,
gfxContext* aContext, const gfx::Size& aScale,
const std::function<void()>& aPaintFunc);
static int sIndent;
#include <stdarg.h>
#include <stdio.h>
static void GP(const char* fmt, ...) {
va_list args;
va_start(args, fmt);
#if 0
for (int i = 0; i < sIndent; i++) { printf(" "); }
vprintf(fmt, args);
#endif
va_end(args);
}
// XXX: problems:
// - How do we deal with scrolling while having only a single invalidation rect?
// We can have a valid rect and an invalid rect. As we scroll the valid rect
// will move and the invalid rect will be the new area
struct BlobItemData;
static void DestroyBlobGroupDataProperty(nsTArray<BlobItemData*>* aArray);
NS_DECLARE_FRAME_PROPERTY_WITH_DTOR(BlobGroupDataProperty,
nsTArray<BlobItemData*>,
DestroyBlobGroupDataProperty);
// These are currently manually allocated and ownership is help by the
// mDisplayItems hash table in DIGroup
struct BlobItemData {
// a weak pointer to the frame for this item.
// DisplayItemData has a mFrameList to deal with merged frames. Hopefully we
// don't need to worry about that.
nsIFrame* mFrame;
uint32_t mDisplayItemKey;
nsTArray<BlobItemData*>*
mArray; // a weak pointer to the array that's owned by the frame property
IntRect mRect;
// It would be nice to not need this. We need to be able to call
// ComputeInvalidationRegion. ComputeInvalidationRegion will sometimes reach
// into parent style structs to get information that can change the
// invalidation region
UniquePtr<nsDisplayItemGeometry> mGeometry;
DisplayItemClip mClip;
bool mUsed; // initialized near construction
// a weak pointer to the group that owns this item
// we use this to track whether group for a particular item has changed
struct DIGroup* mGroup;
// XXX: only used for debugging
bool mInvalid;
bool mInvalidRegion;
bool mEmpty;
// properties that are used to emulate layer tree invalidation
Matrix mMatrix; // updated to track the current transform to device space
RefPtr<BasicLayerManager> mLayerManager;
IntRect mImageRect;
LayerIntPoint mGroupOffset;
BlobItemData(DIGroup* aGroup, nsDisplayItem* aItem)
: mUsed(false), mGroup(aGroup) {
mInvalid = false;
mInvalidRegion = false;
mEmpty = false;
mDisplayItemKey = aItem->GetPerFrameKey();
AddFrame(aItem->Frame());
}
private:
void AddFrame(nsIFrame* aFrame) {
mFrame = aFrame;
nsTArray<BlobItemData*>* array =
aFrame->GetProperty(BlobGroupDataProperty());
if (!array) {
array = new nsTArray<BlobItemData*>();
aFrame->SetProperty(BlobGroupDataProperty(), array);
}
array->AppendElement(this);
mArray = array;
}
public:
void ClearFrame() {
// Delete the weak pointer to this BlobItemData on the frame
MOZ_RELEASE_ASSERT(mFrame);
// the property may already be removed if WebRenderUserData got deleted
// first so we use our own mArray pointer.
mArray->RemoveElement(this);
// drop the entire property if nothing's left in the array
if (mArray->IsEmpty()) {
// If the frame is in the process of being destroyed this will fail
// but that's ok, because the the property will be removed then anyways
mFrame->DeleteProperty(BlobGroupDataProperty());
}
mFrame = nullptr;
}
~BlobItemData() {
if (mFrame) {
ClearFrame();
}
}
};
static BlobItemData* GetBlobItemData(nsDisplayItem* aItem) {
nsIFrame* frame = aItem->Frame();
uint32_t key = aItem->GetPerFrameKey();
const nsTArray<BlobItemData*>* array =
frame->GetProperty(BlobGroupDataProperty());
if (array) {
for (BlobItemData* item : *array) {
if (item->mDisplayItemKey == key) {
return item;
}
}
}
return nullptr;
}
// We keep around the BlobItemData so that when we invalidate it get properly
// included in the rect
static void DestroyBlobGroupDataProperty(nsTArray<BlobItemData*>* aArray) {
for (BlobItemData* item : *aArray) {
GP("DestroyBlobGroupDataProperty: %p-%d\n", item->mFrame,
item->mDisplayItemKey);
item->mFrame = nullptr;
}
delete aArray;
}
static void TakeExternalSurfaces(
WebRenderDrawEventRecorder* aRecorder,
std::vector<RefPtr<SourceSurface>>& aExternalSurfaces,
RenderRootStateManager* aManager, wr::IpcResourceUpdateQueue& aResources) {
aRecorder->TakeExternalSurfaces(aExternalSurfaces);
for (auto& surface : aExternalSurfaces) {
// While we don't use the image key with the surface, because the blob image
// renderer doesn't have easy access to the resource set, we still want to
// ensure one is generated. That will ensure the surface remains alive until
// at least the last epoch which the blob image could be used in.
wr::ImageKey key;
DebugOnly<nsresult> rv =
SharedSurfacesChild::Share(surface, aManager, aResources, key);
MOZ_ASSERT(rv.value != NS_ERROR_NOT_IMPLEMENTED);
}
}
struct DIGroup;
struct Grouper {
explicit Grouper(ClipManager& aClipManager)
: mAppUnitsPerDevPixel(0),
mDisplayListBuilder(nullptr),
mClipManager(aClipManager) {}
int32_t mAppUnitsPerDevPixel;
nsDisplayListBuilder* mDisplayListBuilder;
ClipManager& mClipManager;
Matrix mTransform;
// Paint the list of aChildren display items.
void PaintContainerItem(DIGroup* aGroup, nsDisplayItem* aItem,
const IntRect& aItemBounds, nsDisplayList* aChildren,
gfxContext* aContext,
WebRenderDrawEventRecorder* aRecorder);
// Builds groups of display items split based on 'layer activity'
void ConstructGroups(nsDisplayListBuilder* aDisplayListBuilder,
WebRenderCommandBuilder* aCommandBuilder,
wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, DIGroup* aGroup,
nsDisplayList* aList, const StackingContextHelper& aSc);
// Builds a group of display items without promoting anything to active.
void ConstructGroupInsideInactive(WebRenderCommandBuilder* aCommandBuilder,
wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources,
DIGroup* aGroup, nsDisplayList* aList,
const StackingContextHelper& aSc);
// Helper method for processing a single inactive item
void ConstructItemInsideInactive(WebRenderCommandBuilder* aCommandBuilder,
wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources,
DIGroup* aGroup, nsDisplayItem* aItem,
const StackingContextHelper& aSc);
~Grouper() {}
};
// Returns whether this is an item for which complete invalidation was
// reliant on LayerTreeInvalidation in the pre-webrender world.
static bool IsContainerLayerItem(nsDisplayItem* aItem) {
switch (aItem->GetType()) {
case DisplayItemType::TYPE_WRAP_LIST:
case DisplayItemType::TYPE_TRANSFORM:
case DisplayItemType::TYPE_OPACITY:
case DisplayItemType::TYPE_FILTER:
case DisplayItemType::TYPE_BLEND_CONTAINER:
case DisplayItemType::TYPE_BLEND_MODE:
case DisplayItemType::TYPE_MASK:
case DisplayItemType::TYPE_PERSPECTIVE: {
return true;
}
default: { return false; }
}
}
#include <sstream>
static bool DetectContainerLayerPropertiesBoundsChange(
nsDisplayItem* aItem, BlobItemData* aData,
nsDisplayItemGeometry& aGeometry) {
switch (aItem->GetType()) {
case DisplayItemType::TYPE_MASK:
case DisplayItemType::TYPE_FILTER: {
// These two items go through BasicLayerManager composition which clips to
// the BuildingRect
aGeometry.mBounds = aGeometry.mBounds.Intersect(aItem->GetBuildingRect());
break;
}
default:
break;
}
return !aGeometry.mBounds.IsEqualEdges(aData->mGeometry->mBounds);
}
struct DIGroup {
// XXX: Storing owning pointers to the BlobItemData in a hash table is not
// a good choice. There are two better options:
//
// 1. We should just be using a linked list for this stuff.
// That we can iterate over only the used items.
// We remove from the unused list and add to the used list
// when we see an item.
//
// we allocate using a free list.
//
// 2. We can use a Vec and use SwapRemove().
// We'll just need to be careful when iterating.
// The advantage of a Vec is that everything stays compact
// and we don't need to heap allocate the BlobItemData's
nsTHashtable<nsPtrHashKey<BlobItemData>> mDisplayItems;
IntRect mInvalidRect;
nsRect mGroupBounds;
LayerIntRect mPaintRect;
int32_t mAppUnitsPerDevPixel;
gfx::Size mScale;
ScrollableLayerGuid::ViewID mScrollId;
LayerPoint mResidualOffset;
LayerIntRect mLayerBounds;
// The current bounds of the blob image, relative to
// the top-left of the mLayerBounds.
IntRect mImageBounds;
// mImageBounds clipped to the container/parent of the
// current item being processed.
IntRect mClippedImageBounds;
Maybe<wr::BlobImageKey> mKey;
std::vector<RefPtr<SourceSurface>> mExternalSurfaces;
std::vector<RefPtr<ScaledFont>> mFonts;
DIGroup()
: mAppUnitsPerDevPixel(0),
mScrollId(ScrollableLayerGuid::NULL_SCROLL_ID) {}
void InvalidateRect(const IntRect& aRect) {
// Empty rects get dropped
mInvalidRect = mInvalidRect.Union(aRect);
}
IntRect ItemBounds(nsDisplayItem* aItem) {
BlobItemData* data = GetBlobItemData(aItem);
return data->mRect;
}
void ClearItems() {
GP("items: %d\n", mDisplayItems.Count());
for (auto iter = mDisplayItems.Iter(); !iter.Done(); iter.Next()) {
BlobItemData* data = iter.Get()->GetKey();
GP("Deleting %p-%d\n", data->mFrame, data->mDisplayItemKey);
iter.Remove();
delete data;
}
}
void ClearImageKey(RenderRootStateManager* aManager, bool aForce = false) {
if (mKey) {
MOZ_RELEASE_ASSERT(aForce || mInvalidRect.IsEmpty());
aManager->AddBlobImageKeyForDiscard(mKey.value());
mKey = Nothing();
}
mFonts.clear();
}
static IntRect ToDeviceSpace(nsRect aBounds, Matrix& aMatrix,
int32_t aAppUnitsPerDevPixel,
LayerIntPoint aOffset) {
// RoundedOut can convert empty rectangles to non-empty ones
// so special case them here
if (aBounds.IsEmpty()) {
return IntRect();
}
return RoundedOut(aMatrix.TransformBounds(ToRect(
nsLayoutUtils::RectToGfxRect(aBounds, aAppUnitsPerDevPixel)))) -
aOffset.ToUnknownPoint();
}
void ComputeGeometryChange(nsDisplayItem* aItem, BlobItemData* aData,
Matrix& aMatrix, nsDisplayListBuilder* aBuilder) {
// If the frame is marked as invalidated, and didn't specify a rect to
// invalidate then we want to invalidate both the old and new bounds,
// otherwise we only want to invalidate the changed areas. If we do get an
// invalid rect, then we want to add this on top of the change areas.
nsRect invalid;
const DisplayItemClip& clip = aItem->GetClip();
int32_t appUnitsPerDevPixel =
aItem->Frame()->PresContext()->AppUnitsPerDevPixel();
MOZ_RELEASE_ASSERT(mAppUnitsPerDevPixel == appUnitsPerDevPixel);
LayoutDeviceRect bounds =
LayoutDeviceRect::FromAppUnits(mGroupBounds, appUnitsPerDevPixel);
LayoutDeviceIntPoint offset = RoundedToInt(bounds.TopLeft());
GP("\n");
GP("CGC offset %d %d\n", offset.x, offset.y);
GP("clippedImageRect %d %d %d %d\n", mClippedImageBounds.x,
mClippedImageBounds.y, mClippedImageBounds.width,
mClippedImageBounds.height);
/*if (aItem->IsReused() && aData->mGeometry) {
return;
}*/
aData->mInvalidRegion = false;
GP("pre mInvalidRect: %s %p-%d - inv: %d %d %d %d\n", aItem->Name(),
aItem->Frame(), aItem->GetPerFrameKey(), mInvalidRect.x, mInvalidRect.y,
mInvalidRect.width, mInvalidRect.height);
if (!aData->mGeometry) {
// This item is being added for the first time, invalidate its entire
// area.
UniquePtr<nsDisplayItemGeometry> geometry(
aItem->AllocateGeometry(aBuilder));
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
geometry->ComputeInvalidationRegion());
aData->mGeometry = std::move(geometry);
IntRect transformedRect = ToDeviceSpace(
clippedBounds, aMatrix, appUnitsPerDevPixel, mLayerBounds.TopLeft());
aData->mRect = transformedRect.Intersect(mClippedImageBounds);
GP("CGC %s %d %d %d %d\n", aItem->Name(), clippedBounds.x,
clippedBounds.y, clippedBounds.width, clippedBounds.height);
GP("%d %d, %f %f\n", mLayerBounds.TopLeft().x, mLayerBounds.TopLeft().y,
aMatrix._11, aMatrix._22);
GP("mRect %d %d %d %d\n", aData->mRect.x, aData->mRect.y,
aData->mRect.width, aData->mRect.height);
InvalidateRect(aData->mRect);
aData->mInvalid = true;
} else if (aData->mInvalid ||
/* XXX: handle image load invalidation */ (
aItem->IsInvalid(invalid) && invalid.IsEmpty())) {
MOZ_RELEASE_ASSERT(mLayerBounds.TopLeft() == aData->mGroupOffset);
UniquePtr<nsDisplayItemGeometry> geometry(
aItem->AllocateGeometry(aBuilder));
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
geometry->ComputeInvalidationRegion());
aData->mGeometry = std::move(geometry);
GP("matrix: %f %f\n", aMatrix._31, aMatrix._32);
GP("frame invalid invalidate: %s\n", aItem->Name());
GP("old rect: %d %d %d %d\n", aData->mRect.x, aData->mRect.y,
aData->mRect.width, aData->mRect.height);
InvalidateRect(aData->mRect.Intersect(mImageBounds));
// We want to snap to outside pixels. When should we multiply by the
// matrix?
// XXX: TransformBounds is expensive. We should avoid doing it if we have
// no transform
IntRect transformedRect = ToDeviceSpace(
clippedBounds, aMatrix, appUnitsPerDevPixel, mLayerBounds.TopLeft());
aData->mRect = transformedRect.Intersect(mClippedImageBounds);
InvalidateRect(aData->mRect);
GP("new rect: %d %d %d %d\n", aData->mRect.x, aData->mRect.y,
aData->mRect.width, aData->mRect.height);
aData->mInvalid = true;
} else {
MOZ_RELEASE_ASSERT(mLayerBounds.TopLeft() == aData->mGroupOffset);
GP("else invalidate: %s\n", aItem->Name());
nsRegion combined;
// this includes situations like reflow changing the position
aItem->ComputeInvalidationRegion(aBuilder, aData->mGeometry.get(),
&combined);
if (!combined.IsEmpty()) {
// There might be no point in doing this elaborate tracking here to get
// smaller areas
InvalidateRect(aData->mRect.Intersect(
mImageBounds)); // invalidate the old area -- in theory combined
// should take care of this
UniquePtr<nsDisplayItemGeometry> geometry(
aItem->AllocateGeometry(aBuilder));
// invalidate the invalidated area.
aData->mGeometry = std::move(geometry);
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
aData->mGeometry->ComputeInvalidationRegion());
IntRect transformedRect =
ToDeviceSpace(clippedBounds, aMatrix, appUnitsPerDevPixel,
mLayerBounds.TopLeft());
aData->mRect = transformedRect.Intersect(mClippedImageBounds);
InvalidateRect(aData->mRect);
// CGC invariant broken
if (!mInvalidRect.Contains(aData->mRect)) {
gfxCriticalError()
<< "CGC-"
<< "-" << aData->mRect.x << "-" << aData->mRect.y << "-"
<< aData->mRect.width << "-" << aData->mRect.height << "-ib";
}
aData->mInvalid = true;
aData->mInvalidRegion = true;
} else {
if (aData->mClip != clip) {
UniquePtr<nsDisplayItemGeometry> geometry(
aItem->AllocateGeometry(aBuilder));
if (!IsContainerLayerItem(aItem)) {
// the bounds of layer items can change on us without
// ComputeInvalidationRegion returning any change. Other items
// shouldn't have any hidden geometry change.
MOZ_RELEASE_ASSERT(
geometry->mBounds.IsEqualEdges(aData->mGeometry->mBounds));
} else {
aData->mGeometry = std::move(geometry);
}
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
aData->mGeometry->ComputeInvalidationRegion());
IntRect transformedRect =
ToDeviceSpace(clippedBounds, aMatrix, appUnitsPerDevPixel,
mLayerBounds.TopLeft());
InvalidateRect(aData->mRect.Intersect(mImageBounds));
aData->mRect = transformedRect.Intersect(mClippedImageBounds);
InvalidateRect(aData->mRect);
GP("ClipChange: %s %d %d %d %d\n", aItem->Name(), aData->mRect.x,
aData->mRect.y, aData->mRect.XMost(), aData->mRect.YMost());
} else if (!aMatrix.ExactlyEquals(aData->mMatrix)) {
// We haven't detected any changes so far. Unfortunately we don't
// currently have a good way of checking if the transform has changed
// so we just store it and see if it see if it has changed.
// If we want this to go faster, we can probably put a flag on the
// frame using the style sytem UpdateTransformLayer hint and check for
// that.
UniquePtr<nsDisplayItemGeometry> geometry(
aItem->AllocateGeometry(aBuilder));
if (!IsContainerLayerItem(aItem)) {
// the bounds of layer items can change on us
// other items shouldn't
MOZ_RELEASE_ASSERT(
geometry->mBounds.IsEqualEdges(aData->mGeometry->mBounds));
} else {
aData->mGeometry = std::move(geometry);
}
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
aData->mGeometry->ComputeInvalidationRegion());
IntRect transformedRect =
ToDeviceSpace(clippedBounds, aMatrix, appUnitsPerDevPixel,
mLayerBounds.TopLeft());
InvalidateRect(aData->mRect.Intersect(mImageBounds));
aData->mRect = transformedRect.Intersect(mClippedImageBounds);
InvalidateRect(aData->mRect);
GP("TransformChange: %s %d %d %d %d\n", aItem->Name(), aData->mRect.x,
aData->mRect.y, aData->mRect.XMost(), aData->mRect.YMost());
} else if (IsContainerLayerItem(aItem)) {
UniquePtr<nsDisplayItemGeometry> geometry(
aItem->AllocateGeometry(aBuilder));
// we need to catch bounds changes of containers so that we continue
// to have the correct bounds rects in the recording
if (DetectContainerLayerPropertiesBoundsChange(aItem, aData,
*geometry)) {
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
geometry->ComputeInvalidationRegion());
aData->mGeometry = std::move(geometry);
IntRect transformedRect =
ToDeviceSpace(clippedBounds, aMatrix, appUnitsPerDevPixel,
mLayerBounds.TopLeft());
InvalidateRect(aData->mRect.Intersect(mImageBounds));
aData->mRect = transformedRect.Intersect(mClippedImageBounds);
InvalidateRect(aData->mRect);
GP("DetectContainerLayerPropertiesBoundsChange change\n");
} else if (!aData->mImageRect.IsEqualEdges(mClippedImageBounds)) {
// Make sure we update mRect for mClippedImageBounds changes
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
geometry->ComputeInvalidationRegion());
IntRect transformedRect =
ToDeviceSpace(clippedBounds, aMatrix, appUnitsPerDevPixel,
mLayerBounds.TopLeft());
// The invalid rect should contain the old rect and the new rect
// but may not because the parent may have been removed.
InvalidateRect(aData->mRect);
aData->mRect = transformedRect.Intersect(mClippedImageBounds);
InvalidateRect(aData->mRect);
GP("ContainerLayer image rect bounds change\n");
} else {
// XXX: this code can eventually be deleted/made debug only
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
geometry->ComputeInvalidationRegion());
IntRect transformedRect =
ToDeviceSpace(clippedBounds, aMatrix, appUnitsPerDevPixel,
mLayerBounds.TopLeft());
auto rect = transformedRect.Intersect(mClippedImageBounds);
GP("Layer NoChange: %s %d %d %d %d\n", aItem->Name(),
aData->mRect.x, aData->mRect.y, aData->mRect.XMost(),
aData->mRect.YMost());
MOZ_RELEASE_ASSERT(rect.IsEqualEdges(aData->mRect));
}
} else if (!aData->mImageRect.IsEqualEdges(mClippedImageBounds)) {
// Make sure we update mRect for mClippedImageBounds changes
UniquePtr<nsDisplayItemGeometry> geometry(
aItem->AllocateGeometry(aBuilder));
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
geometry->ComputeInvalidationRegion());
IntRect transformedRect =
ToDeviceSpace(clippedBounds, aMatrix, appUnitsPerDevPixel,
mLayerBounds.TopLeft());
// The invalid rect should contain the old rect and the new rect
// but may not because the parent may have been removed.
InvalidateRect(aData->mRect);
aData->mRect = transformedRect.Intersect(mClippedImageBounds);
InvalidateRect(aData->mRect);
GP("image rect bounds change\n");
} else {
// XXX: this code can eventually be deleted/made debug only
UniquePtr<nsDisplayItemGeometry> geometry(
aItem->AllocateGeometry(aBuilder));
nsRect clippedBounds = clip.ApplyNonRoundedIntersection(
geometry->ComputeInvalidationRegion());
IntRect transformedRect =
ToDeviceSpace(clippedBounds, aMatrix, appUnitsPerDevPixel,
mLayerBounds.TopLeft());
auto rect = transformedRect.Intersect(mClippedImageBounds);
GP("NoChange: %s %d %d %d %d\n", aItem->Name(), aData->mRect.x,
aData->mRect.y, aData->mRect.XMost(), aData->mRect.YMost());
MOZ_RELEASE_ASSERT(rect.IsEqualEdges(aData->mRect));
}
}
}
aData->mClip = clip;
aData->mMatrix = aMatrix;
aData->mGroupOffset = mLayerBounds.TopLeft();
aData->mImageRect = mClippedImageBounds;
GP("post mInvalidRect: %d %d %d %d\n", mInvalidRect.x, mInvalidRect.y,
mInvalidRect.width, mInvalidRect.height);
}
void EndGroup(WebRenderLayerManager* aWrManager,
nsDisplayListBuilder* aDisplayListBuilder,
wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, Grouper* aGrouper,
nsDisplayItem* aStartItem, nsDisplayItem* aEndItem) {
GP("\n\n");
GP("Begin EndGroup\n");
// Invalidate any unused items
GP("mDisplayItems\n");
for (auto iter = mDisplayItems.Iter(); !iter.Done(); iter.Next()) {
BlobItemData* data = iter.Get()->GetKey();
GP(" : %p-%d\n", data->mFrame, data->mDisplayItemKey);
if (!data->mUsed) {
GP("Invalidate unused: %p-%d\n", data->mFrame, data->mDisplayItemKey);
InvalidateRect(data->mRect);
iter.Remove();
delete data;
} else {
data->mUsed = false;
}
}
// Round the bounds out to leave space for unsnapped content
LayoutDeviceToLayerScale2D scale(mScale.width, mScale.height);
LayerIntRect layerBounds = mLayerBounds;
IntSize dtSize = layerBounds.Size().ToUnknownSize();
LayoutDeviceRect bounds =
(LayerRect(layerBounds) - mResidualOffset) / scale;
if (mInvalidRect.IsEmpty()) {
GP("Not repainting group because it's empty\n");
GP("End EndGroup\n");
if (mKey) {
aResources.SetBlobImageVisibleArea(
mKey.value(),
ViewAs<ImagePixel>(mPaintRect,
PixelCastJustification::LayerIsImage));
PushImage(aBuilder, bounds);
}
return;
}
gfx::SurfaceFormat format = gfx::SurfaceFormat::B8G8R8A8;
std::vector<RefPtr<ScaledFont>> fonts;
bool validFonts = true;
RefPtr<WebRenderDrawEventRecorder> recorder =
MakeAndAddRef<WebRenderDrawEventRecorder>(
[&](MemStream& aStream,
std::vector<RefPtr<ScaledFont>>& aScaledFonts) {
size_t count = aScaledFonts.size();
aStream.write((const char*)&count, sizeof(count));
for (auto& scaled : aScaledFonts) {
Maybe<wr::FontInstanceKey> key =
aWrManager->WrBridge()->GetFontKeyForScaledFont(
scaled, &aResources);
if (key.isNothing()) {
validFonts = false;
break;
}
BlobFont font = {key.value(), scaled};
aStream.write((const char*)&font, sizeof(font));
}
fonts = std::move(aScaledFonts);
});
RefPtr<gfx::DrawTarget> dummyDt = gfx::Factory::CreateDrawTarget(
gfx::BackendType::SKIA, gfx::IntSize(1, 1), format);
RefPtr<gfx::DrawTarget> dt =
gfx::Factory::CreateRecordingDrawTarget(recorder, dummyDt, dtSize);
// Setup the gfxContext
RefPtr<gfxContext> context = gfxContext::CreateOrNull(dt);
GP("ctx-offset %f %f\n", bounds.x, bounds.y);
context->SetMatrix(Matrix::Scaling(mScale.width, mScale.height)
.PreTranslate(-bounds.x, -bounds.y));
GP("mInvalidRect: %d %d %d %d\n", mInvalidRect.x, mInvalidRect.y,
mInvalidRect.width, mInvalidRect.height);
bool empty = aStartItem == aEndItem;
if (empty) {
ClearImageKey(aWrManager->GetRenderRootStateManager(), true);
return;
}
PaintItemRange(aGrouper, aStartItem, aEndItem, context, recorder);
// XXX: set this correctly perhaps using
// aItem->GetOpaqueRegion(aDisplayListBuilder, &snapped).
// Contains(paintBounds);?
wr::OpacityType opacity = wr::OpacityType::HasAlphaChannel;
TakeExternalSurfaces(recorder, mExternalSurfaces,
aWrManager->GetRenderRootStateManager(), aResources);
bool hasItems = recorder->Finish();
GP("%d Finish\n", hasItems);
if (!validFonts) {
gfxCriticalNote << "Failed serializing fonts for blob image";
return;
}
Range<uint8_t> bytes((uint8_t*)recorder->mOutputStream.mData,
recorder->mOutputStream.mLength);
if (!mKey) {
if (!hasItems) // we don't want to send a new image that doesn't have any
// items in it
return;
wr::BlobImageKey key =
wr::BlobImageKey{aWrManager->WrBridge()->GetNextImageKey()};
GP("No previous key making new one %d\n", key._0.mHandle);
wr::ImageDescriptor descriptor(dtSize, 0, dt->GetFormat(), opacity);
MOZ_RELEASE_ASSERT(bytes.length() > sizeof(size_t));
if (!aResources.AddBlobImage(key, descriptor, bytes)) {
return;
}
mKey = Some(key);
} else {
wr::ImageDescriptor descriptor(dtSize, 0, dt->GetFormat(), opacity);
auto bottomRight = mInvalidRect.BottomRight();
GP("check invalid %d %d - %d %d\n", bottomRight.x, bottomRight.y,
dtSize.width, dtSize.height);
MOZ_RELEASE_ASSERT(bottomRight.x <= dtSize.width &&
bottomRight.y <= dtSize.height);
GP("Update Blob %d %d %d %d\n", mInvalidRect.x, mInvalidRect.y,
mInvalidRect.width, mInvalidRect.height);
if (!aResources.UpdateBlobImage(mKey.value(), descriptor, bytes,
ViewAs<ImagePixel>(mInvalidRect))) {
return;
}
}
mFonts = std::move(fonts);
mInvalidRect.SetEmpty();
aResources.SetBlobImageVisibleArea(
mKey.value(),
ViewAs<ImagePixel>(mPaintRect, PixelCastJustification::LayerIsImage));
PushImage(aBuilder, bounds);
GP("End EndGroup\n\n");
}
void PushImage(wr::DisplayListBuilder& aBuilder,
const LayoutDeviceRect& bounds) {
wr::LayoutRect dest = wr::ToLayoutRect(bounds);
GP("PushImage: %f %f %f %f\n", dest.origin.x, dest.origin.y,
dest.size.width, dest.size.height);
gfx::SamplingFilter sampleFilter = gfx::SamplingFilter::
LINEAR; // nsLayoutUtils::GetSamplingFilterForFrame(aItem->Frame());
bool backfaceHidden = false;
// Emit a dispatch-to-content hit test region covering this area
CompositorHitTestInfo hitInfo(CompositorHitTestFlags::eVisibleToHitTest,
CompositorHitTestFlags::eDispatchToContent);
// XXX - clipping the item against the paint rect breaks some content.
// cf. Bug 1455422.
// wr::LayoutRect clip = wr::ToLayoutRect(bounds.Intersect(mPaintRect));
aBuilder.SetHitTestInfo(mScrollId, hitInfo);
aBuilder.PushImage(dest, dest, !backfaceHidden,
wr::ToImageRendering(sampleFilter),
wr::AsImageKey(mKey.value()));
aBuilder.ClearHitTestInfo();
}
void PaintItemRange(Grouper* aGrouper, nsDisplayItem* aStartItem,
nsDisplayItem* aEndItem, gfxContext* aContext,
WebRenderDrawEventRecorder* aRecorder) {
LayerIntSize size = mLayerBounds.Size();
for (nsDisplayItem* item = aStartItem; item != aEndItem;
item = item->GetAbove()) {
IntRect bounds = ItemBounds(item);
auto bottomRight = bounds.BottomRight();
GP("Trying %s %p-%d %d %d %d %d\n", item->Name(), item->Frame(),
item->GetPerFrameKey(), bounds.x, bounds.y, bounds.XMost(),
bounds.YMost());
GP("paint check invalid %d %d - %d %d\n", bottomRight.x, bottomRight.y,
size.width, size.height);
// skip empty items
if (bounds.IsEmpty()) {
continue;
}
bool dirty = true;
if (!mInvalidRect.Contains(bounds)) {
GP("Passing\n");
dirty = false;
}
if (mInvalidRect.Contains(bounds)) {
GP("Wholely contained\n");
} else {
BlobItemData* data = GetBlobItemData(item);
if (data->mInvalid) {
if (item->GetType() == DisplayItemType::TYPE_TRANSFORM) {
nsDisplayTransform* transformItem =
static_cast<nsDisplayTransform*>(item);
const Matrix4x4Flagged& t = transformItem->GetTransform();
Matrix t2d;
bool is2D = t.Is2D(&t2d);
gfxCriticalError()
<< "DIT-" << is2D << "-r-" << data->mInvalidRegion << "-"
<< bounds.x << "-" << bounds.y << "-" << bounds.width << "-"
<< bounds.height << "," << mInvalidRect.x << "-"
<< mInvalidRect.y << "-" << mInvalidRect.width << "-"
<< mInvalidRect.height << "-sbi";
} else {
gfxCriticalError() << "DisplayItem" << item->Name() << "-region-"
<< data->mInvalidRegion << "-should be invalid";
}
}
// if the item is invalid it needs to be fully contained
MOZ_RELEASE_ASSERT(!data->mInvalid);
}
nsDisplayList* children = item->GetChildren();
if (children) {
GP("doing children in EndGroup\n");
aGrouper->PaintContainerItem(this, item, bounds, children, aContext,
aRecorder);
} else {
// Hit test items don't have anything to paint so skip them. Ideally we
// would drop these items earlier...
if (dirty &&
item->GetType() != DisplayItemType::TYPE_COMPOSITOR_HITTEST_INFO) {
// What should the clip settting strategy be? We can set the full clip
// everytime. this is probably easiest for now. An alternative would
// be to put the push and the pop into separate items and let
// invalidation handle it that way.
DisplayItemClip currentClip = item->GetClip();
if (currentClip.HasClip()) {
aContext->Save();
currentClip.ApplyTo(aContext, aGrouper->mAppUnitsPerDevPixel);
}
aContext->NewPath();
GP("painting %s %p-%d\n", item->Name(), item->Frame(),
item->GetPerFrameKey());
if (aGrouper->mDisplayListBuilder->IsPaintingToWindow()) {
item->Frame()->AddStateBits(NS_FRAME_PAINTED_THEBES);
}
item->Paint(aGrouper->mDisplayListBuilder, aContext);
if (currentClip.HasClip()) {
aContext->Restore();
}
}
aContext->GetDrawTarget()->FlushItem(bounds);
}
}
}
~DIGroup() {
GP("Group destruct\n");
for (auto iter = mDisplayItems.Iter(); !iter.Done(); iter.Next()) {
BlobItemData* data = iter.Get()->GetKey();
GP("Deleting %p-%d\n", data->mFrame, data->mDisplayItemKey);
iter.Remove();
delete data;
}
}
};
// If we have an item we need to make sure it matches the current group
// otherwise it means the item switched groups and we need to invalidate
// it and recreate the data.
static BlobItemData* GetBlobItemDataForGroup(nsDisplayItem* aItem,
DIGroup* aGroup) {
BlobItemData* data = GetBlobItemData(aItem);
if (data) {
MOZ_RELEASE_ASSERT(data->mGroup->mDisplayItems.Contains(data));
if (data->mGroup != aGroup) {
GP("group don't match %p %p\n", data->mGroup, aGroup);
data->ClearFrame();
// the item is for another group
// it should be cleared out as being unused at the end of this paint
data = nullptr;
}
}
if (!data) {
GP("Allocating blob data\n");
data = new BlobItemData(aGroup, aItem);
aGroup->mDisplayItems.PutEntry(data);
}
data->mUsed = true;
return data;
}
void Grouper::PaintContainerItem(DIGroup* aGroup, nsDisplayItem* aItem,
const IntRect& aItemBounds,
nsDisplayList* aChildren, gfxContext* aContext,
WebRenderDrawEventRecorder* aRecorder) {
switch (aItem->GetType()) {
case DisplayItemType::TYPE_TRANSFORM: {
DisplayItemClip currentClip = aItem->GetClip();
gfxContextMatrixAutoSaveRestore saveMatrix;
if (currentClip.HasClip()) {
aContext->Save();
currentClip.ApplyTo(aContext, this->mAppUnitsPerDevPixel);
aContext->GetDrawTarget()->FlushItem(aItemBounds);
} else {
saveMatrix.SetContext(aContext);
}
auto transformItem = static_cast<nsDisplayTransform*>(aItem);
Matrix4x4Flagged trans = transformItem->GetTransform();
Matrix trans2d;
if (!trans.Is2D(&trans2d)) {
// We don't currently support doing invalidation inside 3d transforms.
// For now just paint it as a single item.
BlobItemData* data = GetBlobItemDataForGroup(aItem, aGroup);
if (data->mLayerManager->GetRoot()) {
data->mLayerManager->BeginTransaction();
data->mLayerManager->EndTransaction(
FrameLayerBuilder::DrawPaintedLayer, mDisplayListBuilder);
aContext->GetDrawTarget()->FlushItem(aItemBounds);
}
} else {
aContext->Multiply(ThebesMatrix(trans2d));
aGroup->PaintItemRange(this, aChildren->GetBottom(), nullptr, aContext,
aRecorder);
}
if (currentClip.HasClip()) {
aContext->Restore();
aContext->GetDrawTarget()->FlushItem(aItemBounds);
}
break;
}
case DisplayItemType::TYPE_OPACITY: {
auto opacityItem = static_cast<nsDisplayOpacity*>(aItem);
float opacity = opacityItem->GetOpacity();
if (opacity == 0.0f) {
return;
}
aContext->GetDrawTarget()->PushLayer(false, opacityItem->GetOpacity(),
nullptr, mozilla::gfx::Matrix(),
aItemBounds);
GP("beginGroup %s %p-%d\n", aItem->Name(), aItem->Frame(),
aItem->GetPerFrameKey());
aContext->GetDrawTarget()->FlushItem(aItemBounds);
aGroup->PaintItemRange(this, aChildren->GetBottom(), nullptr, aContext,
aRecorder);
aContext->GetDrawTarget()->PopLayer();
GP("endGroup %s %p-%d\n", aItem->Name(), aItem->Frame(),
aItem->GetPerFrameKey());
aContext->GetDrawTarget()->FlushItem(aItemBounds);
break;
}
case DisplayItemType::TYPE_BLEND_MODE: {
auto blendItem = static_cast<nsDisplayBlendMode*>(aItem);
auto blendMode = blendItem->BlendMode();
aContext->GetDrawTarget()->PushLayerWithBlend(
false, 1.0, nullptr, mozilla::gfx::Matrix(), aItemBounds, false,
blendMode);
GP("beginGroup %s %p-%d\n", aItem->Name(), aItem->Frame(),
aItem->GetPerFrameKey());
aContext->GetDrawTarget()->FlushItem(aItemBounds);
aGroup->PaintItemRange(this, aChildren->GetBottom(), nullptr, aContext,
aRecorder);
aContext->GetDrawTarget()->PopLayer();
GP("endGroup %s %p-%d\n", aItem->Name(), aItem->Frame(),
aItem->GetPerFrameKey());
aContext->GetDrawTarget()->FlushItem(aItemBounds);
break;
}
case DisplayItemType::TYPE_MASK: {
GP("Paint Mask\n");
auto maskItem = static_cast<nsDisplayMasksAndClipPaths*>(aItem);
maskItem->SetPaintRect(maskItem->GetClippedBounds(mDisplayListBuilder));
if (maskItem->IsValidMask()) {
maskItem->PaintWithContentsPaintCallback(
mDisplayListBuilder, aContext, [&] {
GP("beginGroup %s %p-%d\n", aItem->Name(), aItem->Frame(),
aItem->GetPerFrameKey());
aContext->GetDrawTarget()->FlushItem(aItemBounds);
aGroup->PaintItemRange(this, aChildren->GetBottom(), nullptr,
aContext, aRecorder);
GP("endGroup %s %p-%d\n", aItem->Name(), aItem->Frame(),
aItem->GetPerFrameKey());
});
aContext->GetDrawTarget()->FlushItem(aItemBounds);
}
break;
}
case DisplayItemType::TYPE_FILTER: {
GP("Paint Filter\n");
// We don't currently support doing invalidation inside nsDisplayFilters
// for now just paint it as a single item
BlobItemData* data = GetBlobItemDataForGroup(aItem, aGroup);
if (data->mLayerManager->GetRoot()) {
data->mLayerManager->BeginTransaction();
static_cast<nsDisplayFilters*>(aItem)->PaintAsLayer(
mDisplayListBuilder, aContext, data->mLayerManager);
if (data->mLayerManager->InTransaction()) {
data->mLayerManager->AbortTransaction();
}
aContext->GetDrawTarget()->FlushItem(aItemBounds);
}
break;
}
default:
aGroup->PaintItemRange(this, aChildren->GetBottom(), nullptr, aContext,
aRecorder);
break;
}
}
class WebRenderGroupData : public WebRenderUserData {
public:
explicit WebRenderGroupData(RenderRootStateManager* aWRManager,
nsDisplayItem* aItem);
virtual ~WebRenderGroupData();
virtual WebRenderGroupData* AsGroupData() override { return this; }
virtual UserDataType GetType() override { return UserDataType::eGroup; }
static UserDataType Type() { return UserDataType::eGroup; }
DIGroup mSubGroup;
DIGroup mFollowingGroup;
};
static bool IsItemProbablyActive(nsDisplayItem* aItem,
nsDisplayListBuilder* aDisplayListBuilder);
static bool HasActiveChildren(const nsDisplayList& aList,
nsDisplayListBuilder* aDisplayListBuilder) {
for (nsDisplayItem* i = aList.GetBottom(); i; i = i->GetAbove()) {
if (IsItemProbablyActive(i, aDisplayListBuilder)) {
return true;
}
}
return false;
}
// This function decides whether we want to treat this item as "active", which
// means that it's a container item which we will turn into a WebRender
// StackingContext, or whether we treat it as "inactive" and include it inside
// the parent blob image.
//
// We can't easily use GetLayerState because it wants a bunch of layers related
// information.
static bool IsItemProbablyActive(nsDisplayItem* aItem,
nsDisplayListBuilder* aDisplayListBuilder) {
switch (aItem->GetType()) {
case DisplayItemType::TYPE_TRANSFORM: {
nsDisplayTransform* transformItem =
static_cast<nsDisplayTransform*>(aItem);
const Matrix4x4Flagged& t = transformItem->GetTransform();
Matrix t2d;
bool is2D = t.Is2D(&t2d);
GP("active: %d\n", transformItem->MayBeAnimated(aDisplayListBuilder));
return transformItem->MayBeAnimated(aDisplayListBuilder, false) ||
!is2D ||
HasActiveChildren(*transformItem->GetChildren(),
aDisplayListBuilder);
}
case DisplayItemType::TYPE_OPACITY: {
nsDisplayOpacity* opacityItem = static_cast<nsDisplayOpacity*>(aItem);
bool active = opacityItem->NeedsActiveLayer(aDisplayListBuilder,
opacityItem->Frame(), false);
GP("active: %d\n", active);
return active || HasActiveChildren(*opacityItem->GetChildren(),
aDisplayListBuilder);
}
case DisplayItemType::TYPE_FOREIGN_OBJECT: {
return true;
}
case DisplayItemType::TYPE_WRAP_LIST:
case DisplayItemType::TYPE_PERSPECTIVE: {
if (aItem->GetChildren()) {
return HasActiveChildren(*aItem->GetChildren(), aDisplayListBuilder);
}
return false;
}
case DisplayItemType::TYPE_FILTER: {
nsDisplayFilters* filters = static_cast<nsDisplayFilters*>(aItem);
return filters->CanCreateWebRenderCommands(aDisplayListBuilder);
}
default:
// TODO: handle other items?
return false;
}
}
// This does a pass over the display lists and will join the display items
// into groups as well as paint them
void Grouper::ConstructGroups(nsDisplayListBuilder* aDisplayListBuilder,
WebRenderCommandBuilder* aCommandBuilder,
wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources,
DIGroup* aGroup, nsDisplayList* aList,
const StackingContextHelper& aSc) {
DIGroup* currentGroup = aGroup;
nsDisplayItem* item = aList->GetBottom();
nsDisplayItem* startOfCurrentGroup = item;
while (item) {
if (IsItemProbablyActive(item, mDisplayListBuilder)) {
currentGroup->EndGroup(aCommandBuilder->mManager, aDisplayListBuilder,
aBuilder, aResources, this, startOfCurrentGroup,
item);
{
auto spaceAndClipChain = mClipManager.SwitchItem(item, aSc);
wr::SpaceAndClipChainHelper saccHelper(aBuilder, spaceAndClipChain);
sIndent++;
// Note: this call to CreateWebRenderCommands can recurse back into
// this function.
RenderRootStateManager* manager =
aCommandBuilder->mManager->GetRenderRootStateManager();
bool createdWRCommands = item->CreateWebRenderCommands(
aBuilder, aResources, aSc, manager, mDisplayListBuilder);
sIndent--;
MOZ_RELEASE_ASSERT(
createdWRCommands,
"active transforms should always succeed at creating "
"WebRender commands");
}
RefPtr<WebRenderGroupData> groupData =
aCommandBuilder->CreateOrRecycleWebRenderUserData<WebRenderGroupData>(
item);
// Initialize groupData->mFollowingGroup
// TODO: compute the group bounds post-grouping, so that they can be
// tighter for just the sublist that made it into this group.
// We want to ensure the tight bounds are still clipped by area
// that we're building the display list for.
if (!groupData->mFollowingGroup.mGroupBounds.IsEqualEdges(
currentGroup->mGroupBounds) ||
groupData->mFollowingGroup.mScale != currentGroup->mScale ||
groupData->mFollowingGroup.mAppUnitsPerDevPixel !=
currentGroup->mAppUnitsPerDevPixel ||
groupData->mFollowingGroup.mResidualOffset !=
currentGroup->mResidualOffset) {
if (groupData->mFollowingGroup.mAppUnitsPerDevPixel !=
currentGroup->mAppUnitsPerDevPixel) {
GP("app unit change following: %d %d\n",
groupData->mFollowingGroup.mAppUnitsPerDevPixel,
currentGroup->mAppUnitsPerDevPixel);
}
// The group changed size
GP("Inner group size change\n");
groupData->mFollowingGroup.ClearItems();
groupData->mFollowingGroup.ClearImageKey(
aCommandBuilder->mManager->GetRenderRootStateManager());
}
groupData->mFollowingGroup.mGroupBounds = currentGroup->mGroupBounds;
groupData->mFollowingGroup.mAppUnitsPerDevPixel =
currentGroup->mAppUnitsPerDevPixel;
groupData->mFollowingGroup.mLayerBounds = currentGroup->mLayerBounds;
groupData->mFollowingGroup.mImageBounds = currentGroup->mImageBounds;
groupData->mFollowingGroup.mClippedImageBounds =
currentGroup->mClippedImageBounds;
groupData->mFollowingGroup.mScale = currentGroup->mScale;
groupData->mFollowingGroup.mResidualOffset =
currentGroup->mResidualOffset;
groupData->mFollowingGroup.mPaintRect = currentGroup->mPaintRect;
currentGroup = &groupData->mFollowingGroup;
startOfCurrentGroup = item->GetAbove();
} else { // inactive item
ConstructItemInsideInactive(aCommandBuilder, aBuilder, aResources,
currentGroup, item, aSc);
}
item = item->GetAbove();
}
currentGroup->EndGroup(aCommandBuilder->mManager, aDisplayListBuilder,
aBuilder, aResources, this, startOfCurrentGroup,
nullptr);
}
// This does a pass over the display lists and will join the display items
// into a single group.
void Grouper::ConstructGroupInsideInactive(
WebRenderCommandBuilder* aCommandBuilder, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, DIGroup* aGroup,
nsDisplayList* aList, const StackingContextHelper& aSc) {
nsDisplayItem* item = aList->GetBottom();
while (item) {
ConstructItemInsideInactive(aCommandBuilder, aBuilder, aResources, aGroup,
item, aSc);
item = item->GetAbove();
}
}
bool BuildLayer(nsDisplayItem* aItem, BlobItemData* aData,
nsDisplayListBuilder* aDisplayListBuilder,
const gfx::Size& aScale);
void Grouper::ConstructItemInsideInactive(
WebRenderCommandBuilder* aCommandBuilder, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, DIGroup* aGroup,
nsDisplayItem* aItem, const StackingContextHelper& aSc) {
nsDisplayList* children = aItem->GetChildren();
BlobItemData* data = GetBlobItemDataForGroup(aItem, aGroup);
/* mInvalid unfortunately persists across paints. Clear it so that if we don't
* set it to 'true' we ensure that we're not using the value from the last
* time that we painted */
data->mInvalid = false;
// we compute the geometry change here because we have the transform around
// still
aGroup->ComputeGeometryChange(aItem, data, mTransform, mDisplayListBuilder);
// Temporarily restrict the image bounds to the bounds of the container so
// that clipped children within the container know about the clip.
IntRect oldClippedImageBounds = aGroup->mClippedImageBounds;
aGroup->mClippedImageBounds =
aGroup->mClippedImageBounds.Intersect(data->mRect);
if (aItem->GetType() == DisplayItemType::TYPE_FILTER) {
gfx::Size scale(1, 1);
// If ComputeDifferences finds any change, we invalidate the entire
// container item. This is needed because blob merging requires the entire
// item to be within the invalid region.
if (BuildLayer(aItem, data, mDisplayListBuilder, scale)) {
data->mInvalid = true;
aGroup->InvalidateRect(data->mRect);
}
} else if (aItem->GetType() == DisplayItemType::TYPE_TRANSFORM) {
nsDisplayTransform* transformItem = static_cast<nsDisplayTransform*>(aItem);
const Matrix4x4Flagged& t = transformItem->GetTransform();
Matrix t2d;
bool is2D = t.Is2D(&t2d);
if (!is2D) {
// We'll use BasicLayerManager to handle 3d transforms.
gfx::Size scale(1, 1);
// If ComputeDifferences finds any change, we invalidate the entire
// container item. This is needed because blob merging requires the entire
// item to be within the invalid region.
if (BuildLayer(aItem, data, mDisplayListBuilder, scale)) {
data->mInvalid = true;
aGroup->InvalidateRect(data->mRect);
}
} else {
Matrix m = mTransform;
GP("t2d: %f %f\n", t2d._31, t2d._32);
mTransform.PreMultiply(t2d);
GP("mTransform: %f %f\n", mTransform._31, mTransform._32);
ConstructGroupInsideInactive(aCommandBuilder, aBuilder, aResources,
aGroup, children, aSc);
mTransform = m;
}
} else if (children) {
sIndent++;
ConstructGroupInsideInactive(aCommandBuilder, aBuilder, aResources, aGroup,
children, aSc);
sIndent--;
}
GP("Including %s of %d\n", aItem->Name(), aGroup->mDisplayItems.Count());
aGroup->mClippedImageBounds = oldClippedImageBounds;
}
/* This is just a copy of nsRect::ScaleToOutsidePixels with an offset added in.
* The offset is applied just before the rounding. It's in the scaled space. */
static mozilla::gfx::IntRect ScaleToOutsidePixelsOffset(
nsRect aRect, float aXScale, float aYScale, nscoord aAppUnitsPerPixel,
LayerPoint aOffset) {
mozilla::gfx::IntRect rect;
rect.SetNonEmptyBox(
NSToIntFloor(NSAppUnitsToFloatPixels(aRect.x, float(aAppUnitsPerPixel)) *
aXScale +
aOffset.x),
NSToIntFloor(NSAppUnitsToFloatPixels(aRect.y, float(aAppUnitsPerPixel)) *
aYScale +
aOffset.y),
NSToIntCeil(
NSAppUnitsToFloatPixels(aRect.XMost(), float(aAppUnitsPerPixel)) *
aXScale +
aOffset.x),
NSToIntCeil(
NSAppUnitsToFloatPixels(aRect.YMost(), float(aAppUnitsPerPixel)) *
aYScale +
aOffset.y));
return rect;
}
RenderRootStateManager* WebRenderCommandBuilder::GetRenderRootStateManager() {
return mManager->GetRenderRootStateManager();
}
void WebRenderCommandBuilder::DoGroupingForDisplayList(
nsDisplayList* aList, nsDisplayItem* aWrappingItem,
nsDisplayListBuilder* aDisplayListBuilder, const StackingContextHelper& aSc,
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources) {
if (!aList->GetBottom()) {
return;
}
GP("DoGroupingForDisplayList\n");
mClipManager.BeginList(aSc);
Grouper g(mClipManager);
int32_t appUnitsPerDevPixel =
aWrappingItem->Frame()->PresContext()->AppUnitsPerDevPixel();
g.mDisplayListBuilder = aDisplayListBuilder;
RefPtr<WebRenderGroupData> groupData =
CreateOrRecycleWebRenderUserData<WebRenderGroupData>(aWrappingItem);
bool snapped;
nsRect groupBounds =
aWrappingItem->GetUntransformedBounds(aDisplayListBuilder, &snapped);
// We don't want to restrict the size of the blob to the building rect of the
// display item, since that will change when we scroll and trigger a resize
// invalidation of the blob (will be fixed by blob recoordination).
// Instead we retrieve the bounds of the overflow clip on the <svg> and use
// that to restrict our size and prevent invisible content from affecting
// our bounds.
if (mClippedGroupBounds) {
groupBounds = groupBounds.Intersect(mClippedGroupBounds.value());
mClippedGroupBounds = Nothing();
}
DIGroup& group = groupData->mSubGroup;
gfx::Size scale = aSc.GetInheritedScale();
GP("Inherrited scale %f %f\n", scale.width, scale.height);
auto trans =
ViewAs<LayerPixel>(aSc.GetSnappingSurfaceTransform().GetTranslation());
auto snappedTrans = LayerIntPoint::Floor(trans);
LayerPoint residualOffset = trans - snappedTrans;
auto p = group.mGroupBounds;
auto q = groupBounds;
GP("Bounds: %d %d %d %d vs %d %d %d %d\n", p.x, p.y, p.width, p.height, q.x,
q.y, q.width, q.height);
if (!group.mGroupBounds.IsEqualEdges(groupBounds) ||
group.mAppUnitsPerDevPixel != appUnitsPerDevPixel ||
group.mScale != scale || group.mResidualOffset != residualOffset) {
GP("Property change. Deleting blob\n");
if (group.mAppUnitsPerDevPixel != appUnitsPerDevPixel) {
GP(" App unit change %d -> %d\n", group.mAppUnitsPerDevPixel,
appUnitsPerDevPixel);
}
// The bounds have changed so we need to discard the old image and add all
// the commands again.
auto p = group.mGroupBounds;
auto q = groupBounds;
if (!group.mGroupBounds.IsEqualEdges(groupBounds)) {
GP(" Bounds change: %d %d %d %d -> %d %d %d %d\n", p.x, p.y, p.width,
p.height, q.x, q.y, q.width, q.height);
}
if (group.mScale != scale) {
GP(" Scale %f %f -> %f %f\n", group.mScale.width, group.mScale.height,
scale.width, scale.height);
}
if (group.mResidualOffset != residualOffset) {
GP(" Residual Offset %f %f -> %f %f\n", group.mResidualOffset.x,
group.mResidualOffset.y, residualOffset.x, residualOffset.y);
}
group.ClearItems();
group.ClearImageKey(mManager->GetRenderRootStateManager());
}
ScrollableLayerGuid::ViewID scrollId = ScrollableLayerGuid::NULL_SCROLL_ID;
if (const ActiveScrolledRoot* asr = aWrappingItem->GetActiveScrolledRoot()) {
scrollId = asr->GetViewId();
}
g.mAppUnitsPerDevPixel = appUnitsPerDevPixel;
group.mResidualOffset = residualOffset;
group.mGroupBounds = groupBounds;
group.mAppUnitsPerDevPixel = appUnitsPerDevPixel;
group.mLayerBounds = LayerIntRect::FromUnknownRect(
ScaleToOutsidePixelsOffset(group.mGroupBounds, scale.width, scale.height,
group.mAppUnitsPerDevPixel, residualOffset));
group.mImageBounds =
IntRect(0, 0, group.mLayerBounds.width, group.mLayerBounds.height);
group.mClippedImageBounds = group.mImageBounds;
const nsRect& untransformedPaintRect =
aWrappingItem->GetUntransformedPaintRect();
group.mPaintRect = LayerIntRect::FromUnknownRect(
ScaleToOutsidePixelsOffset(
untransformedPaintRect, scale.width, scale.height,
group.mAppUnitsPerDevPixel, residualOffset))
.Intersect(group.mLayerBounds);
// XXX: Make the paint rect relative to the layer bounds. After we include
// mLayerBounds.TopLeft() in the blob image we want to stop doing this
// adjustment.
group.mPaintRect = group.mPaintRect - group.mLayerBounds.TopLeft();
g.mTransform = Matrix::Scaling(scale.width, scale.height)
.PostTranslate(residualOffset.x, residualOffset.y);
group.mScale = scale;
group.mScrollId = scrollId;
g.ConstructGroups(aDisplayListBuilder, this, aBuilder, aResources, &group,
aList, aSc);
mClipManager.EndList(aSc);
}
void WebRenderCommandBuilder::Destroy() {
mLastCanvasDatas.Clear();
ClearCachedResources();
}
void WebRenderCommandBuilder::EmptyTransaction() {
// We need to update canvases that might have changed.
for (auto iter = mLastCanvasDatas.Iter(); !iter.Done(); iter.Next()) {
RefPtr<WebRenderCanvasData> canvasData = iter.Get()->GetKey();
WebRenderCanvasRendererAsync* canvas = canvasData->GetCanvasRenderer();
if (canvas) {
canvas->UpdateCompositableClientForEmptyTransaction();
}
}
}
bool WebRenderCommandBuilder::NeedsEmptyTransaction() {
return !mLastCanvasDatas.IsEmpty();
}
void WebRenderCommandBuilder::BuildWebRenderCommands(
wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResourceUpdates, nsDisplayList* aDisplayList,
nsDisplayListBuilder* aDisplayListBuilder, WebRenderScrollData& aScrollData,
wr::LayoutSize& aContentSize, WrFiltersHolder&& aFilters) {
AUTO_PROFILER_LABEL_CATEGORY_PAIR(GRAPHICS_WRDisplayList);
StackingContextHelper sc;
aScrollData = WebRenderScrollData(mManager);
MOZ_ASSERT(mLayerScrollData.empty());
mLastCanvasDatas.Clear();
mLastAsr = nullptr;
mBuilderDumpIndex = 0;
mContainsSVGGroup = false;
MOZ_ASSERT(mDumpIndent == 0);
mClipManager.BeginBuild(mManager, aBuilder);
{
nsPresContext* presContext =
aDisplayListBuilder->RootReferenceFrame()->PresContext();
bool isTopLevelContent =
presContext->Document()->IsTopLevelContentDocument();
wr::StackingContextParams params;
params.mFilters = std::move(aFilters.filters);
params.mFilterDatas = std::move(aFilters.filter_datas);
params.cache_tiles = isTopLevelContent;
params.clip =
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
StackingContextHelper pageRootSc(sc, nullptr, nullptr, nullptr, aBuilder,
params);
if (ShouldDumpDisplayList(aDisplayListBuilder)) {
mBuilderDumpIndex =
aBuilder.Dump(mDumpIndent + 1, Some(mBuilderDumpIndex), Nothing());
}
CreateWebRenderCommandsFromDisplayList(aDisplayList, nullptr,
aDisplayListBuilder, pageRootSc,
aBuilder, aResourceUpdates);
}
// Make a "root" layer data that has everything else as descendants
mLayerScrollData.emplace_back();
mLayerScrollData.back().InitializeRoot(mLayerScrollData.size() - 1);
auto callback =
[&aScrollData](ScrollableLayerGuid::ViewID aScrollId) -> bool {
return aScrollData.HasMetadataFor(aScrollId).isSome();
};
if (Maybe<ScrollMetadata> rootMetadata = nsLayoutUtils::GetRootMetadata(
aDisplayListBuilder, mManager, ContainerLayerParameters(),
callback)) {
mLayerScrollData.back().AppendScrollMetadata(aScrollData,
rootMetadata.ref());
}
// Append the WebRenderLayerScrollData items into WebRenderScrollData
// in reverse order, from topmost to bottommost. This is in keeping with
// the semantics of WebRenderScrollData.
for (auto i = mLayerScrollData.crbegin(); i != mLayerScrollData.crend();
i++) {
aScrollData.AddLayerData(*i);
}
mLayerScrollData.clear();
mClipManager.EndBuild();
// Remove the user data those are not displayed on the screen and
// also reset the data to unused for next transaction.
RemoveUnusedAndResetWebRenderUserData();
}
bool WebRenderCommandBuilder::ShouldDumpDisplayList(
nsDisplayListBuilder* aBuilder) {
return aBuilder != nullptr && aBuilder->IsInActiveDocShell() &&
((XRE_IsParentProcess() && gfxPrefs::WebRenderDLDumpParent()) ||
(XRE_IsContentProcess() && gfxPrefs::WebRenderDLDumpContent()));
}
void WebRenderCommandBuilder::CreateWebRenderCommandsFromDisplayList(
nsDisplayList* aDisplayList, nsDisplayItem* aWrappingItem,
nsDisplayListBuilder* aDisplayListBuilder, const StackingContextHelper& aSc,
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources) {
if (mDoGrouping) {
MOZ_RELEASE_ASSERT(
aWrappingItem,
"Only the root list should have a null wrapping item, and mDoGrouping "
"should never be true for the root list.");
GP("actually entering the grouping code\n");
DoGroupingForDisplayList(aDisplayList, aWrappingItem, aDisplayListBuilder,
aSc, aBuilder, aResources);
return;
}
bool dumpEnabled = ShouldDumpDisplayList(aDisplayListBuilder);
if (dumpEnabled) {
// If we're inside a nested display list, print the WR DL items from the
// wrapper item before we start processing the nested items.
mBuilderDumpIndex =
aBuilder.Dump(mDumpIndent + 1, Some(mBuilderDumpIndex), Nothing());
}
mDumpIndent++;
mClipManager.BeginList(aSc);
bool apzEnabled = mManager->AsyncPanZoomEnabled();
FlattenedDisplayItemIterator iter(aDisplayListBuilder, aDisplayList);
while (nsDisplayItem* i = iter.GetNext()) {
nsDisplayItem* item = i;
DisplayItemType itemType = item->GetType();
// Peek ahead to the next item and try merging with it or swapping with it
// if necessary.
AutoTArray<nsDisplayItem*, 1> mergedItems;
mergedItems.AppendElement(item);
while (nsDisplayItem* peek = iter.PeekNext()) {
if (!item->CanMerge(peek)) {
break;
}
mergedItems.AppendElement(peek);
// Move the iterator forward since we will merge this item.
i = iter.GetNext();
}
if (mergedItems.Length() > 1) {
item = aDisplayListBuilder->MergeItems(mergedItems);
MOZ_ASSERT(item && itemType == item->GetType());
}
if (mForEventsAndPluginsOnly &&
(itemType != DisplayItemType::TYPE_COMPOSITOR_HITTEST_INFO &&
itemType != DisplayItemType::TYPE_PLUGIN)) {
// Only process hit test info items or plugin items.
continue;
}
bool forceNewLayerData = false;
size_t layerCountBeforeRecursing = mLayerScrollData.size();
if (apzEnabled) {
// For some types of display items we want to force a new
// WebRenderLayerScrollData object, to ensure we preserve the APZ-relevant
// data that is in the display item.
forceNewLayerData = item->UpdateScrollData(nullptr, nullptr);
// Anytime the ASR changes we also want to force a new layer data because
// the stack of scroll metadata is going to be different for this
// display item than previously, so we can't squash the display items
// into the same "layer".
const ActiveScrolledRoot* asr = item->GetActiveScrolledRoot();
if (asr != mLastAsr) {
mLastAsr = asr;
forceNewLayerData = true;
}
// Refer to the comment on StackingContextHelper::mDeferredTransformItem
// for an overview of what this is about. This bit of code applies to the
// case where we are deferring a transform item, and we then need to defer
// another transform with a different ASR. In such a case we cannot just
// merge the deferred transforms, but need to force a new
// WebRenderLayerScrollData item to flush the old deferred transform, so
// that we can then start deferring the new one.
if (!forceNewLayerData &&
item->GetType() == DisplayItemType::TYPE_TRANSFORM &&
aSc.GetDeferredTransformItem() &&
(*aSc.GetDeferredTransformItem())->GetActiveScrolledRoot() != asr) {
forceNewLayerData = true;
}
// If we're going to create a new layer data for this item, stash the
// ASR so that if we recurse into a sublist they will know where to stop
// walking up their ASR chain when building scroll metadata.
if (forceNewLayerData) {
mAsrStack.push_back(asr);
}
}
// This is where we emulate the clip/scroll stack that was previously
// implemented on the WR display list side.
auto spaceAndClipChain = mClipManager.SwitchItem(item, aSc);
wr::SpaceAndClipChainHelper saccHelper(aBuilder, spaceAndClipChain);
{ // scope restoreDoGrouping
AutoRestore<bool> restoreDoGrouping(mDoGrouping);
if (itemType == DisplayItemType::TYPE_SVG_WRAPPER) {
// Inside an <svg>, all display items that are not LAYER_ACTIVE wrapper
// display items (like animated transforms / opacity) share the same
// animated geometry root, so we can combine subsequent items of that
// type into the same image.
mContainsSVGGroup = mDoGrouping = true;
if (aWrappingItem &&
aWrappingItem->GetType() == DisplayItemType::TYPE_TRANSFORM) {
// Inline <svg> should always have an overflow clip, but it gets put
// outside the nsDisplayTransform we create for scaling the svg
// viewport. Converting the clip into inner coordinates lets us
// restrict the size of the blob images and prevents unnecessary
// resizes.
nsDisplayTransform* transform =
static_cast<nsDisplayTransform*>(aWrappingItem);
nsRect clippedBounds =
transform->GetClippedBounds(aDisplayListBuilder);
nsRect innerClippedBounds;
DebugOnly<bool> result = transform->UntransformRect(
aDisplayListBuilder, clippedBounds, &innerClippedBounds);
MOZ_ASSERT(result);
mClippedGroupBounds = Some(innerClippedBounds);
}
GP("attempting to enter the grouping code\n");
}
AutoRestore<bool> restoreForEventsAndPluginsOnly(
mForEventsAndPluginsOnly);
if (itemType == DisplayItemType::TYPE_OPACITY &&
static_cast<nsDisplayOpacity*>(item)->ForEventsAndPluginsOnly()) {
mForEventsAndPluginsOnly = true;
}
if (dumpEnabled) {
std::stringstream ss;
nsFrame::PrintDisplayItem(aDisplayListBuilder, item, ss,
static_cast<uint32_t>(mDumpIndent));
printf_stderr("%s", ss.str().c_str());
}
// Note: this call to CreateWebRenderCommands can recurse back into
// this function if the |item| is a wrapper for a sublist.
item->SetPaintRect(item->GetBuildingRect());
RenderRootStateManager* manager = mManager->GetRenderRootStateManager();
bool createdWRCommands = item->CreateWebRenderCommands(
aBuilder, aResources, aSc, manager, aDisplayListBuilder);
if (!createdWRCommands) {
PushItemAsImage(item, aBuilder, aResources, aSc, aDisplayListBuilder);
}
if (dumpEnabled) {
mBuilderDumpIndex =
aBuilder.Dump(mDumpIndent + 1, Some(mBuilderDumpIndex), Nothing());
}
}
if (apzEnabled) {
if (forceNewLayerData) {
// Pop the thing we pushed before the recursion, so the topmost item on
// the stack is enclosing display item's ASR (or the stack is empty)
mAsrStack.pop_back();
const ActiveScrolledRoot* stopAtAsr =
mAsrStack.empty() ? nullptr : mAsrStack.back();
int32_t descendants =
mLayerScrollData.size() - layerCountBeforeRecursing;
// See the comments on StackingContextHelper::mDeferredTransformItem
// for an overview of what deferred transforms are.
// In the case where we deferred a transform, but have a child display
// item with a different ASR than the deferred transform item, we cannot
// put the transform on the WebRenderLayerScrollData item for the child.
// We cannot do this because it will not conform to APZ's expectations
// with respect to how the APZ tree ends up structured. In particular,
// the GetTransformToThis() for the child APZ (which is created for the
// child item's ASR) will not include the transform when we actually do
// want it to.
// When we run into this scenario, we solve it by creating two
// WebRenderLayerScrollData items; one that just holds the transform,
// that we deferred, and a child WebRenderLayerScrollData item that
// holds the scroll metadata for the child's ASR.
Maybe<nsDisplayTransform*> deferred = aSc.GetDeferredTransformItem();
if (deferred && (*deferred)->GetActiveScrolledRoot() !=
item->GetActiveScrolledRoot()) {
// This creates the child WebRenderLayerScrollData for |item|, but
// omits the transform (hence the Nothing() as the last argument to
// Initialize(...)). We also need to make sure that the ASR from
// the deferred transform item is not on this node, so we use that
// ASR as the "stop at" ASR for this WebRenderLayerScrollData.
mLayerScrollData.emplace_back();
mLayerScrollData.back().Initialize(
mManager->GetScrollData(), item, descendants,
(*deferred)->GetActiveScrolledRoot(), Nothing());
// The above WebRenderLayerScrollData will also be a descendant of
// the transform-holding WebRenderLayerScrollData we create below.
descendants++;
// This creates the WebRenderLayerScrollData for the deferred
// transform item. This holds the transform matrix and the remaining
// ASRs needed to complete the ASR chain (i.e. the ones from the
// stopAtAsr down to the deferred transform item's ASR, which must be
// "between" stopAtAsr and |item|'s ASR in the ASR tree).
mLayerScrollData.emplace_back();
mLayerScrollData.back().Initialize(mManager->GetScrollData(),
*deferred, descendants, stopAtAsr,
aSc.GetDeferredTransformMatrix());
} else {
// This is the "simple" case where we don't need to create two
// WebRenderLayerScrollData items; we can just create one that also
// holds the deferred transform matrix, if any.
mLayerScrollData.emplace_back();
mLayerScrollData.back().Initialize(mManager->GetScrollData(), item,
descendants, stopAtAsr,
aSc.GetDeferredTransformMatrix());
}
}
}
}
mDumpIndent--;
mClipManager.EndList(aSc);
}
void WebRenderCommandBuilder::PushOverrideForASR(
const ActiveScrolledRoot* aASR, const wr::WrSpatialId& aSpatialId) {
mClipManager.PushOverrideForASR(aASR, aSpatialId);
}
void WebRenderCommandBuilder::PopOverrideForASR(
const ActiveScrolledRoot* aASR) {
mClipManager.PopOverrideForASR(aASR);
}
Maybe<wr::ImageKey> WebRenderCommandBuilder::CreateImageKey(
nsDisplayItem* aItem, ImageContainer* aContainer,
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResources,
mozilla::wr::ImageRendering aRendering, const StackingContextHelper& aSc,
gfx::IntSize& aSize, const Maybe<LayoutDeviceRect>& aAsyncImageBounds) {
RefPtr<WebRenderImageData> imageData =
CreateOrRecycleWebRenderUserData<WebRenderImageData>(aItem);
MOZ_ASSERT(imageData);
if (aContainer->IsAsync()) {
MOZ_ASSERT(aAsyncImageBounds);
LayoutDeviceRect rect = aAsyncImageBounds.value();
LayoutDeviceRect scBounds(LayoutDevicePoint(0, 0), rect.Size());
gfx::MaybeIntSize scaleToSize;
if (!aContainer->GetScaleHint().IsEmpty()) {
scaleToSize = Some(aContainer->GetScaleHint());
}
gfx::Matrix4x4 transform =
gfx::Matrix4x4::From2D(aContainer->GetTransformHint());
// TODO!
// We appear to be using the image bridge for a lot (most/all?) of
// layers-free image handling and that breaks frame consistency.
imageData->CreateAsyncImageWebRenderCommands(
aBuilder, aContainer, aSc, rect, scBounds, transform, scaleToSize,
aRendering, wr::MixBlendMode::Normal, !aItem->BackfaceIsHidden());
return Nothing();
}
AutoLockImage autoLock(aContainer);
if (!autoLock.HasImage()) {
return Nothing();
}
mozilla::layers::Image* image = autoLock.GetImage();
aSize = image->GetSize();
return imageData->UpdateImageKey(aContainer, aResources);
}
bool WebRenderCommandBuilder::PushImage(
nsDisplayItem* aItem, ImageContainer* aContainer,
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResources,
const StackingContextHelper& aSc, const LayoutDeviceRect& aRect,
const LayoutDeviceRect& aClip) {
mozilla::wr::ImageRendering rendering = wr::ToImageRendering(
nsLayoutUtils::GetSamplingFilterForFrame(aItem->Frame()));
gfx::IntSize size;
Maybe<wr::ImageKey> key =
CreateImageKey(aItem, aContainer, aBuilder, aResources, rendering, aSc,
size, Some(aRect));
if (aContainer->IsAsync()) {
// Async ImageContainer does not create ImageKey, instead it uses Pipeline.
MOZ_ASSERT(key.isNothing());
return true;
}
if (!key) {
return false;
}
auto r = wr::ToRoundedLayoutRect(aRect);
auto c = wr::ToRoundedLayoutRect(aClip);
aBuilder.PushImage(r, c, !aItem->BackfaceIsHidden(), rendering, key.value());
return true;
}
bool BuildLayer(nsDisplayItem* aItem, BlobItemData* aData,
nsDisplayListBuilder* aDisplayListBuilder,
const gfx::Size& aScale) {
if (!aData->mLayerManager) {
aData->mLayerManager =
new BasicLayerManager(BasicLayerManager::BLM_INACTIVE);
}
RefPtr<BasicLayerManager> blm = aData->mLayerManager;
UniquePtr<LayerProperties> props;
if (blm->GetRoot()) {
props = LayerProperties::CloneFrom(blm->GetRoot());
}
FrameLayerBuilder* layerBuilder = new FrameLayerBuilder();
layerBuilder->Init(aDisplayListBuilder, blm, nullptr, true);
layerBuilder->DidBeginRetainedLayerTransaction(blm);
blm->BeginTransaction();
bool isInvalidated = false;
ContainerLayerParameters param(aScale.width, aScale.height);
RefPtr<Layer> root = aItem->BuildLayer(aDisplayListBuilder, blm, param);
if (root) {
blm->SetRoot(root);
layerBuilder->WillEndTransaction();
// Check if there is any invalidation region.
nsIntRegion invalid;
if (props) {
props->ComputeDifferences(root, invalid, nullptr);
if (!invalid.IsEmpty()) {
isInvalidated = true;
}
} else {
isInvalidated = true;
}
}
blm->AbortTransaction();
return isInvalidated;
}
static bool PaintByLayer(nsDisplayItem* aItem,
nsDisplayListBuilder* aDisplayListBuilder,
const RefPtr<BasicLayerManager>& aManager,
gfxContext* aContext, const gfx::Size& aScale,
const std::function<void()>& aPaintFunc) {
UniquePtr<LayerProperties> props;
if (aManager->GetRoot()) {
props = LayerProperties::CloneFrom(aManager->GetRoot());
}
FrameLayerBuilder* layerBuilder = new FrameLayerBuilder();
layerBuilder->Init(aDisplayListBuilder, aManager, nullptr, true);
layerBuilder->DidBeginRetainedLayerTransaction(aManager);
aManager->SetDefaultTarget(aContext);
nsCString none;
aManager->BeginTransactionWithTarget(aContext, none);
bool isInvalidated = false;
ContainerLayerParameters param(aScale.width, aScale.height);
RefPtr<Layer> root = aItem->BuildLayer(aDisplayListBuilder, aManager, param);
if (root) {
aManager->SetRoot(root);
layerBuilder->WillEndTransaction();
aPaintFunc();
// Check if there is any invalidation region.
nsIntRegion invalid;
if (props) {
props->ComputeDifferences(root, invalid, nullptr);
if (!invalid.IsEmpty()) {
isInvalidated = true;
}
} else {
isInvalidated = true;
}
}
#ifdef MOZ_DUMP_PAINTING
if (gfxUtils::DumpDisplayList() || gfxEnv::DumpPaint()) {
fprintf_stderr(
gfxUtils::sDumpPaintFile,
"Basic layer tree for painting contents of display item %s(%p):\n",
aItem->Name(), aItem->Frame());
std::stringstream stream;
aManager->Dump(stream, "", gfxEnv::DumpPaintToFile());
fprint_stderr(
gfxUtils::sDumpPaintFile,
stream); // not a typo, fprint_stderr declared in LayersLogging.h
}
#endif
if (aManager->InTransaction()) {
aManager->AbortTransaction();
}
aManager->SetTarget(nullptr);
aManager->SetDefaultTarget(nullptr);
return isInvalidated;
}
static bool PaintItemByDrawTarget(nsDisplayItem* aItem, gfx::DrawTarget* aDT,
const LayoutDevicePoint& aOffset,
nsDisplayListBuilder* aDisplayListBuilder,
const RefPtr<BasicLayerManager>& aManager,
const gfx::Size& aScale,
Maybe<gfx::Color>& aHighlight) {
MOZ_ASSERT(aDT);
bool isInvalidated = false;
// XXX Why is this ClearRect() needed?
aDT->ClearRect(Rect(aDT->GetRect()));
RefPtr<gfxContext> context = gfxContext::CreateOrNull(aDT);
MOZ_ASSERT(context);
switch (aItem->GetType()) {
case DisplayItemType::TYPE_SVG_WRAPPER: {
// XXX Why doesn't this need the scaling applied?
context->SetMatrix(
context->CurrentMatrix().PreTranslate(-aOffset.x, -aOffset.y));
isInvalidated = PaintByLayer(
aItem, aDisplayListBuilder, aManager, context, aScale, [&]() {
aManager->EndTransaction(FrameLayerBuilder::DrawPaintedLayer,
aDisplayListBuilder);
});
break;
}
case DisplayItemType::TYPE_MASK: {
// We could handle this case with the same code as TYPE_FILTER, but it
// would be good to know what situations trigger it.
MOZ_RELEASE_ASSERT(0);
break;
}
case DisplayItemType::TYPE_FILTER: {
context->SetMatrix(context->CurrentMatrix()
.PreScale(aScale.width, aScale.height)
.PreTranslate(-aOffset.x, -aOffset.y));
isInvalidated = PaintByLayer(
aItem, aDisplayListBuilder, aManager, context, {1, 1}, [&]() {
static_cast<nsDisplayFilters*>(aItem)->PaintAsLayer(
aDisplayListBuilder, context, aManager);
});
break;
}
default:
context->SetMatrix(context->CurrentMatrix()
.PreScale(aScale.width, aScale.height)
.PreTranslate(-aOffset.x, -aOffset.y));
if (aDisplayListBuilder->IsPaintingToWindow()) {
aItem->Frame()->AddStateBits(NS_FRAME_PAINTED_THEBES);
}
aItem->Paint(aDisplayListBuilder, context);
isInvalidated = true;
break;
}
if (aItem->GetType() != DisplayItemType::TYPE_MASK) {
// Apply highlight fills, if the appropriate prefs are set.
// We don't do this for masks because we'd be filling the A8 mask surface,
// which isn't very useful.
if (aHighlight) {
aDT->SetTransform(gfx::Matrix());
aDT->FillRect(Rect(aDT->GetRect()),
gfx::ColorPattern(aHighlight.value()));
}
if (aItem->Frame()->PresContext()->GetPaintFlashing() && isInvalidated) {
aDT->SetTransform(gfx::Matrix());
float r = float(rand()) / RAND_MAX;
float g = float(rand()) / RAND_MAX;
float b = float(rand()) / RAND_MAX;
aDT->FillRect(Rect(aDT->GetRect()),
gfx::ColorPattern(gfx::Color(r, g, b, 0.5)));
}
}
return isInvalidated;
}
already_AddRefed<WebRenderFallbackData>
WebRenderCommandBuilder::GenerateFallbackData(
nsDisplayItem* aItem, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, const StackingContextHelper& aSc,
nsDisplayListBuilder* aDisplayListBuilder, LayoutDeviceRect& aImageRect) {
bool useBlobImage =
gfxPrefs::WebRenderBlobImages() && !aItem->MustPaintOnContentSide();
Maybe<gfx::Color> highlight = Nothing();
if (gfxPrefs::WebRenderHighlightPaintedLayers()) {
highlight = Some(useBlobImage ? gfx::Color(1.0, 0.0, 0.0, 0.5)
: gfx::Color(1.0, 1.0, 0.0, 0.5));
}
RefPtr<WebRenderFallbackData> fallbackData =
CreateOrRecycleWebRenderUserData<WebRenderFallbackData>(aItem);
bool snap;
nsRect itemBounds = aItem->GetBounds(aDisplayListBuilder, &snap);
// Blob images will only draw the visible area of the blob so we don't need to
// clip them here and can just rely on the webrender clipping.
// TODO We also don't clip native themed widget to avoid over-invalidation
// during scrolling. it would be better to support a sort of straming/tiling
// scheme for large ones but the hope is that we should not have large native
// themed items.
nsRect paintBounds = itemBounds;
if (useBlobImage || aItem->MustPaintOnContentSide()) {
paintBounds = itemBounds;
} else {
paintBounds = aItem->GetClippedBounds(aDisplayListBuilder);
}
// nsDisplayItem::Paint() may refer the variables that come from
// ComputeVisibility(). So we should call ComputeVisibility() before painting.
// e.g.: nsDisplayBoxShadowInner uses mPaintRect in Paint() and mPaintRect is
// computed in nsDisplayBoxShadowInner::ComputeVisibility().
nsRegion visibleRegion(paintBounds);
aItem->SetPaintRect(paintBounds);
aItem->ComputeVisibility(aDisplayListBuilder, &visibleRegion);
const int32_t appUnitsPerDevPixel =
aItem->Frame()->PresContext()->AppUnitsPerDevPixel();
auto bounds =
LayoutDeviceRect::FromAppUnits(paintBounds, appUnitsPerDevPixel);
if (bounds.IsEmpty()) {
return nullptr;
}
gfx::Size scale = aSc.GetInheritedScale();
gfx::Size oldScale = fallbackData->mScale;
// We tolerate slight changes in scale so that we don't, for example,
// rerasterize on MotionMark
bool differentScale = gfx::FuzzyEqual(scale.width, oldScale.width, 1e-6f) &&
gfx::FuzzyEqual(scale.height, oldScale.height, 1e-6f);
LayoutDeviceToLayerScale2D layerScale(scale.width, scale.height);
auto trans =
ViewAs<LayerPixel>(aSc.GetSnappingSurfaceTransform().GetTranslation());
auto snappedTrans = LayerIntPoint::Floor(trans);
LayerPoint residualOffset = trans - snappedTrans;
auto dtRect = LayerIntRect::FromUnknownRect(
ScaleToOutsidePixelsOffset(paintBounds, scale.width, scale.height,
appUnitsPerDevPixel, residualOffset));
auto dtSize = dtRect.Size();
auto visibleRect = LayerIntRect::FromUnknownRect(
ScaleToOutsidePixelsOffset(
aItem->GetBuildingRect(), scale.width,
scale.height, appUnitsPerDevPixel, residualOffset))
.Intersect(dtRect);
// visibleRect is relative to the blob origin so adjust for that
visibleRect -= dtRect.TopLeft();
if (dtSize.IsEmpty()) {
return nullptr;
}
aImageRect = dtRect / layerScale;
auto offset = aImageRect.TopLeft();
nsDisplayItemGeometry* geometry = fallbackData->mGeometry;
bool needPaint = true;
// nsDisplayFilters is rendered via BasicLayerManager which means the
// invalidate region is unknown until we traverse the displaylist contained by
// it.
if (geometry && !fallbackData->IsInvalid() &&
aItem->GetType() != DisplayItemType::TYPE_FILTER &&
aItem->GetType() != DisplayItemType::TYPE_SVG_WRAPPER && differentScale) {
nsRect invalid;
nsRegion invalidRegion;
if (aItem->IsInvalid(invalid)) {
invalidRegion.OrWith(paintBounds);
} else {
nsPoint shift = itemBounds.TopLeft() - geometry->mBounds.TopLeft();
geometry->MoveBy(shift);
aItem->ComputeInvalidationRegion(aDisplayListBuilder, geometry,
&invalidRegion);
nsRect lastBounds = fallbackData->mBounds;
lastBounds.MoveBy(shift);
if (!lastBounds.IsEqualInterior(paintBounds)) {
invalidRegion.OrWith(lastBounds);
invalidRegion.OrWith(paintBounds);
}
}
needPaint = !invalidRegion.IsEmpty();
}
if (needPaint || !fallbackData->GetImageKey()) {
nsAutoPtr<nsDisplayItemGeometry> newGeometry;
newGeometry = aItem->AllocateGeometry(aDisplayListBuilder);
fallbackData->mGeometry = std::move(newGeometry);
gfx::SurfaceFormat format = aItem->GetType() == DisplayItemType::TYPE_MASK
? gfx::SurfaceFormat::A8
: gfx::SurfaceFormat::B8G8R8A8;
if (useBlobImage) {
bool snapped;
wr::OpacityType opacity =
aItem->GetOpaqueRegion(aDisplayListBuilder, &snapped)
.Contains(paintBounds)
? wr::OpacityType::Opaque
: wr::OpacityType::HasAlphaChannel;
std::vector<RefPtr<ScaledFont>> fonts;
bool validFonts = true;
RefPtr<WebRenderDrawEventRecorder> recorder =
MakeAndAddRef<WebRenderDrawEventRecorder>(
[&](MemStream& aStream,
std::vector<RefPtr<ScaledFont>>& aScaledFonts) {
size_t count = aScaledFonts.size();
aStream.write((const char*)&count, sizeof(count));
for (auto& scaled : aScaledFonts) {
Maybe<wr::FontInstanceKey> key =
mManager->WrBridge()->GetFontKeyForScaledFont(
scaled, &aResources);
if (key.isNothing()) {
validFonts = false;
break;
}
BlobFont font = {key.value(), scaled};
aStream.write((const char*)&font, sizeof(font));
}
fonts = std::move(aScaledFonts);
});
RefPtr<gfx::DrawTarget> dummyDt = gfx::Factory::CreateDrawTarget(
gfx::BackendType::SKIA, gfx::IntSize(1, 1), format);
RefPtr<gfx::DrawTarget> dt = gfx::Factory::CreateRecordingDrawTarget(
recorder, dummyDt, dtSize.ToUnknownSize());
if (!fallbackData->mBasicLayerManager) {
fallbackData->mBasicLayerManager =
new BasicLayerManager(BasicLayerManager::BLM_INACTIVE);
}
bool isInvalidated = PaintItemByDrawTarget(
aItem, dt, offset, aDisplayListBuilder,
fallbackData->mBasicLayerManager, scale, highlight);
recorder->FlushItem(IntRect({0, 0}, dtSize.ToUnknownSize()));
TakeExternalSurfaces(recorder, fallbackData->mExternalSurfaces,
mManager->GetRenderRootStateManager(), aResources);
recorder->Finish();
if (!validFonts) {
gfxCriticalNote << "Failed serializing fonts for blob image";
return nullptr;
}
if (isInvalidated) {
Range<uint8_t> bytes((uint8_t*)recorder->mOutputStream.mData,
recorder->mOutputStream.mLength);
wr::BlobImageKey key =
wr::BlobImageKey{mManager->WrBridge()->GetNextImageKey()};
wr::ImageDescriptor descriptor(dtSize.ToUnknownSize(), 0,
dt->GetFormat(), opacity);
if (!aResources.AddBlobImage(key, descriptor, bytes)) {
return nullptr;
}
fallbackData->SetBlobImageKey(key);
fallbackData->SetFonts(fonts);
} else {
// If there is no invalidation region and we don't have a image key,
// it means we don't need to push image for the item.
if (!fallbackData->GetBlobImageKey().isSome()) {
return nullptr;
}
}
aResources.SetBlobImageVisibleArea(
fallbackData->GetBlobImageKey().value(),
ViewAs<ImagePixel>(visibleRect,
PixelCastJustification::LayerIsImage));
} else {
WebRenderImageData* imageData = fallbackData->PaintIntoImage();
imageData->CreateImageClientIfNeeded();
RefPtr<ImageClient> imageClient = imageData->GetImageClient();
RefPtr<ImageContainer> imageContainer =
LayerManager::CreateImageContainer();
bool isInvalidated = false;
{
UpdateImageHelper helper(imageContainer, imageClient,
dtSize.ToUnknownSize(), format);
{
RefPtr<gfx::DrawTarget> dt = helper.GetDrawTarget();
if (!dt) {
return nullptr;
}
if (!fallbackData->mBasicLayerManager) {
fallbackData->mBasicLayerManager =
new BasicLayerManager(mManager->GetWidget());
}
isInvalidated = PaintItemByDrawTarget(
aItem, dt, offset, aDisplayListBuilder,
fallbackData->mBasicLayerManager, scale, highlight);
}
if (isInvalidated) {
// Update image if there it's invalidated.
if (!helper.UpdateImage()) {
return nullptr;
}
} else {
// If there is no invalidation region and we don't have a image key,
// it means we don't need to push image for the item.
if (!imageData->GetImageKey().isSome()) {
return nullptr;
}
}
}
// Force update the key in fallback data since we repaint the image in
// this path. If not force update, fallbackData may reuse the original key
// because it doesn't know UpdateImageHelper already updated the image
// container.
if (isInvalidated &&
!imageData->UpdateImageKey(imageContainer, aResources, true)) {
return nullptr;
}
}
fallbackData->mScale = scale;
fallbackData->SetInvalid(false);
}
// Update current bounds to fallback data
fallbackData->mBounds = paintBounds;
MOZ_ASSERT(fallbackData->GetImageKey());
return fallbackData.forget();
}
class WebRenderMaskData : public WebRenderUserData {
public:
explicit WebRenderMaskData(RenderRootStateManager* aManager,
nsDisplayItem* aItem)
: WebRenderUserData(aManager, aItem),
mMaskStyle(nsStyleImageLayers::LayerType::Mask) {
MOZ_COUNT_CTOR(WebRenderMaskData);
}
virtual ~WebRenderMaskData() {
MOZ_COUNT_DTOR(WebRenderMaskData);
ClearImageKey();
}
void ClearImageKey() {
if (mBlobKey) {
mManager->AddBlobImageKeyForDiscard(mBlobKey.value());
}
mBlobKey.reset();
}
virtual UserDataType GetType() override { return UserDataType::eMask; }
static UserDataType Type() { return UserDataType::eMask; }
Maybe<wr::BlobImageKey> mBlobKey;
std::vector<RefPtr<gfx::ScaledFont>> mFonts;
std::vector<RefPtr<gfx::SourceSurface>> mExternalSurfaces;
LayerIntRect mItemRect;
nsPoint mMaskOffset;
nsStyleImageLayers mMaskStyle;
gfx::Size mScale;
};
Maybe<wr::ImageMask> WebRenderCommandBuilder::BuildWrMaskImage(
nsDisplayMasksAndClipPaths* aMaskItem, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, const StackingContextHelper& aSc,
nsDisplayListBuilder* aDisplayListBuilder,
const LayoutDeviceRect& aBounds) {
RefPtr<WebRenderMaskData> maskData =
CreateOrRecycleWebRenderUserData<WebRenderMaskData>(aMaskItem);
if (!maskData) {
return Nothing();
}
bool snap;
nsRect bounds = aMaskItem->GetBounds(aDisplayListBuilder, &snap);
if (bounds.IsEmpty()) {
return Nothing();
}
const int32_t appUnitsPerDevPixel =
aMaskItem->Frame()->PresContext()->AppUnitsPerDevPixel();
Size scale = aSc.GetInheritedScale();
Size oldScale = maskData->mScale;
// This scale determination should probably be done using
// ChooseScaleAndSetTransform but for now we just fake it.
// We tolerate slight changes in scale so that we don't, for example,
// rerasterize on MotionMark
bool sameScale = FuzzyEqual(scale.width, oldScale.width, 1e-6f) &&
FuzzyEqual(scale.height, oldScale.height, 1e-6f);
LayerIntRect itemRect =
LayerIntRect::FromUnknownRect(bounds.ScaleToOutsidePixels(
scale.width, scale.height, appUnitsPerDevPixel));
LayoutDeviceToLayerScale2D layerScale(scale.width, scale.height);
LayoutDeviceRect imageRect = LayerRect(itemRect) / layerScale;
nsPoint maskOffset = aMaskItem->ToReferenceFrame() - bounds.TopLeft();
nsRect dirtyRect;
if (aMaskItem->IsInvalid(dirtyRect) ||
!itemRect.IsEqualInterior(maskData->mItemRect) ||
!(aMaskItem->Frame()->StyleSVGReset()->mMask == maskData->mMaskStyle) ||
maskOffset != maskData->mMaskOffset || !sameScale) {
IntSize size = itemRect.Size().ToUnknownSize();
std::vector<RefPtr<ScaledFont>> fonts;
bool validFonts = true;
RefPtr<WebRenderDrawEventRecorder> recorder =
MakeAndAddRef<WebRenderDrawEventRecorder>(
[&](MemStream& aStream,
std::vector<RefPtr<ScaledFont>>& aScaledFonts) {
size_t count = aScaledFonts.size();
aStream.write((const char*)&count, sizeof(count));
for (auto& scaled : aScaledFonts) {
Maybe<wr::FontInstanceKey> key =
mManager->WrBridge()->GetFontKeyForScaledFont(scaled,
&aResources);
if (key.isNothing()) {
validFonts = false;
break;
}
BlobFont font = {key.value(), scaled};
aStream.write((const char*)&font, sizeof(font));
}
fonts = std::move(aScaledFonts);
});
RefPtr<DrawTarget> dummyDt = Factory::CreateDrawTarget(
BackendType::SKIA, IntSize(1, 1), SurfaceFormat::A8);
RefPtr<DrawTarget> dt =
Factory::CreateRecordingDrawTarget(recorder, dummyDt, size);
RefPtr<gfxContext> context = gfxContext::CreateOrNull(dt);
MOZ_ASSERT(context);
context->SetMatrix(context->CurrentMatrix()
.PreTranslate(-itemRect.x, -itemRect.y)
.PreScale(scale.width, scale.height));
bool maskPainted = false;
bool paintFinished =
aMaskItem->PaintMask(aDisplayListBuilder, context, &maskPainted);
if (!maskPainted) {
return Nothing();
}
recorder->FlushItem(IntRect(0, 0, size.width, size.height));
TakeExternalSurfaces(recorder, maskData->mExternalSurfaces,
mManager->GetRenderRootStateManager(), aResources);
recorder->Finish();
if (!validFonts) {
gfxCriticalNote << "Failed serializing fonts for blob mask image";
return Nothing();
}
Range<uint8_t> bytes((uint8_t*)recorder->mOutputStream.mData,
recorder->mOutputStream.mLength);
wr::BlobImageKey key =
wr::BlobImageKey{mManager->WrBridge()->GetNextImageKey()};
wr::ImageDescriptor descriptor(size, 0, dt->GetFormat(),
wr::OpacityType::HasAlphaChannel);
if (!aResources.AddBlobImage(key, descriptor,
bytes)) { // visible area: ImageIntRect(0, 0,
// size.width, size.height)
return Nothing();
}
maskData->ClearImageKey();
maskData->mBlobKey = Some(key);
maskData->mFonts = fonts;
if (paintFinished) {
maskData->mItemRect = itemRect;
maskData->mMaskOffset = maskOffset;
maskData->mScale = scale;
maskData->mMaskStyle = aMaskItem->Frame()->StyleSVGReset()->mMask;
}
}
wr::ImageMask imageMask;
imageMask.image = wr::AsImageKey(maskData->mBlobKey.value());
imageMask.rect = wr::ToLayoutRect(imageRect);
imageMask.repeat = false;
return Some(imageMask);
}
bool WebRenderCommandBuilder::PushItemAsImage(
nsDisplayItem* aItem, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, const StackingContextHelper& aSc,
nsDisplayListBuilder* aDisplayListBuilder) {
LayoutDeviceRect imageRect;
RefPtr<WebRenderFallbackData> fallbackData = GenerateFallbackData(
aItem, aBuilder, aResources, aSc, aDisplayListBuilder, imageRect);
if (!fallbackData) {
return false;
}
wr::LayoutRect dest = wr::ToRoundedLayoutRect(imageRect);
gfx::SamplingFilter sampleFilter =
nsLayoutUtils::GetSamplingFilterForFrame(aItem->Frame());
aBuilder.PushImage(dest, dest, !aItem->BackfaceIsHidden(),
wr::ToImageRendering(sampleFilter),
fallbackData->GetImageKey().value());
return true;
}
void WebRenderCommandBuilder::RemoveUnusedAndResetWebRenderUserData() {
for (auto iter = mWebRenderUserDatas.Iter(); !iter.Done(); iter.Next()) {
WebRenderUserData* data = iter.Get()->GetKey();
if (!data->IsUsed()) {
nsIFrame* frame = data->GetFrame();
MOZ_ASSERT(frame->HasProperty(WebRenderUserDataProperty::Key()));
WebRenderUserDataTable* userDataTable =
frame->GetProperty(WebRenderUserDataProperty::Key());
MOZ_ASSERT(userDataTable->Count());
userDataTable->Remove(
WebRenderUserDataKey(data->GetDisplayItemKey(), data->GetType()));
if (!userDataTable->Count()) {
frame->RemoveProperty(WebRenderUserDataProperty::Key());
delete userDataTable;
}
if (data->GetType() == WebRenderUserData::UserDataType::eCanvas) {
mLastCanvasDatas.RemoveEntry(data->AsCanvasData());
}
iter.Remove();
continue;
}
data->SetUsed(false);
}
}
void WebRenderCommandBuilder::ClearCachedResources() {
RemoveUnusedAndResetWebRenderUserData();
// UserDatas should only be in the used state during a call to
// WebRenderCommandBuilder::BuildWebRenderCommands The should always be false
// upon return from BuildWebRenderCommands().
MOZ_RELEASE_ASSERT(mWebRenderUserDatas.Count() == 0);
}
WebRenderGroupData::WebRenderGroupData(
RenderRootStateManager* aRenderRootStateManager, nsDisplayItem* aItem)
: WebRenderUserData(aRenderRootStateManager, aItem) {
MOZ_COUNT_CTOR(WebRenderGroupData);
}
WebRenderGroupData::~WebRenderGroupData() {
MOZ_COUNT_DTOR(WebRenderGroupData);
GP("Group data destruct\n");
mSubGroup.ClearImageKey(mManager, true);
mFollowingGroup.ClearImageKey(mManager, true);
}
} // namespace layers
} // namespace mozilla
View git blame Copy permalink