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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/. */
#ifndef GFX_WEBRENDERCOMMANDBUILDER_H
#define GFX_WEBRENDERCOMMANDBUILDER_H
#include "mozilla/webrender/WebRenderAPI.h"
#include "mozilla/layers/ClipManager.h"
#include "mozilla/layers/WebRenderMessages.h"
#include "mozilla/layers/WebRenderScrollData.h"
#include "mozilla/layers/WebRenderUserData.h"
#include "mozilla/SVGIntegrationUtils.h" // for WrFiltersHolder
#include "nsDisplayList.h"
#include "nsIFrame.h"
#include "DisplayItemCache.h"
namespace mozilla {
namespace layers {
class CanvasLayer;
class ImageClient;
class ImageContainer;
class WebRenderBridgeChild;
class WebRenderCanvasData;
class WebRenderCanvasRendererAsync;
class WebRenderImageData;
class WebRenderFallbackData;
class WebRenderParentCommand;
class WebRenderUserData;
class WebRenderCommandBuilder final {
typedef nsTHashtable<nsRefPtrHashKey<WebRenderUserData>>
WebRenderUserDataRefTable;
typedef nsTHashtable<nsRefPtrHashKey<WebRenderCanvasData>> CanvasDataSet;
typedef nsTHashtable<nsRefPtrHashKey<WebRenderLocalCanvasData>>
LocalCanvasDataSet;
public:
explicit WebRenderCommandBuilder(WebRenderLayerManager* aManager);
void Destroy();
void EmptyTransaction();
bool NeedsEmptyTransaction();
void BuildWebRenderCommands(wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResourceUpdates,
nsDisplayList* aDisplayList,
nsDisplayListBuilder* aDisplayListBuilder,
WebRenderScrollData& aScrollData,
WrFiltersHolder&& aFilters);
void PushOverrideForASR(const ActiveScrolledRoot* aASR,
const wr::WrSpatialId& aSpatialId);
void PopOverrideForASR(const ActiveScrolledRoot* aASR);
Maybe<wr::ImageKey> 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);
WebRenderUserDataRefTable* GetWebRenderUserDataTable() {
return &mWebRenderUserDatas;
}
bool PushImage(nsDisplayItem* aItem, ImageContainer* aContainer,
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResources,
const StackingContextHelper& aSc,
const LayoutDeviceRect& aRect, const LayoutDeviceRect& aClip);
Maybe<wr::ImageMask> BuildWrMaskImage(
nsDisplayMasksAndClipPaths* aMaskItem, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, const StackingContextHelper& aSc,
nsDisplayListBuilder* aDisplayListBuilder,
const LayoutDeviceRect& aBounds);
bool PushItemAsImage(nsDisplayItem* aItem, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources,
const StackingContextHelper& aSc,
nsDisplayListBuilder* aDisplayListBuilder);
void CreateWebRenderCommandsFromDisplayList(
nsDisplayList* aDisplayList, nsDisplayItem* aWrappingItem,
nsDisplayListBuilder* aDisplayListBuilder,
const StackingContextHelper& aSc, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources);
// aWrappingItem has to be non-null.
void DoGroupingForDisplayList(nsDisplayList* aDisplayList,
nsDisplayItem* aWrappingItem,
nsDisplayListBuilder* aDisplayListBuilder,
const StackingContextHelper& aSc,
wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources);
already_AddRefed<WebRenderFallbackData> GenerateFallbackData(
nsDisplayItem* aItem, wr::DisplayListBuilder& aBuilder,
wr::IpcResourceUpdateQueue& aResources, const StackingContextHelper& aSc,
nsDisplayListBuilder* aDisplayListBuilder, LayoutDeviceRect& aImageRect);
void RemoveUnusedAndResetWebRenderUserData();
void ClearCachedResources();
bool ShouldDumpDisplayList(nsDisplayListBuilder* aBuilder);
wr::usize GetBuilderDumpIndex() const { return mBuilderDumpIndex; }
bool GetContainsSVGGroup() { return mContainsSVGGroup; }
// Those are data that we kept between transactions. We used to cache some
// data in the layer. But in layers free mode, we don't have layer which
// means we need some other place to cached the data between transaction.
// We store the data in frame's property.
template <class T>
already_AddRefed<T> CreateOrRecycleWebRenderUserData(
nsDisplayItem* aItem, bool* aOutIsRecycled = nullptr) {
MOZ_ASSERT(aItem);
nsIFrame* frame = aItem->Frame();
if (aOutIsRecycled) {
*aOutIsRecycled = true;
}
WebRenderUserDataTable* userDataTable =
frame->GetProperty(WebRenderUserDataProperty::Key());
if (!userDataTable) {
userDataTable = new WebRenderUserDataTable();
frame->AddProperty(WebRenderUserDataProperty::Key(), userDataTable);
}
RefPtr<WebRenderUserData>& data = userDataTable->GetOrInsert(
WebRenderUserDataKey(aItem->GetPerFrameKey(), T::Type()));
if (!data) {
data = new T(GetRenderRootStateManager(), aItem);
mWebRenderUserDatas.PutEntry(data);
if (aOutIsRecycled) {
*aOutIsRecycled = false;
}
}
MOZ_ASSERT(data);
MOZ_ASSERT(data->GetType() == T::Type());
// Mark the data as being used. We will remove unused user data in the end
// of EndTransaction.
data->SetUsed(true);
switch (T::Type()) {
case WebRenderUserData::UserDataType::eCanvas:
mLastCanvasDatas.PutEntry(data->AsCanvasData());
break;
case WebRenderUserData::UserDataType::eLocalCanvas:
mLastLocalCanvasDatas.PutEntry(data->AsLocalCanvasData());
break;
default:
break;
}
RefPtr<T> res = static_cast<T*>(data.get());
return res.forget();
}
WebRenderLayerManager* mManager;
private:
RenderRootStateManager* GetRenderRootStateManager();
void CreateWebRenderCommands(nsDisplayItem* aItem,
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResources,
const StackingContextHelper& aSc,
nsDisplayListBuilder* aDisplayListBuilder);
ClipManager mClipManager;
// We use this as a temporary data structure while building the mScrollData
// inside a layers-free transaction.
std::vector<WebRenderLayerScrollData> mLayerScrollData;
// We use this as a temporary data structure to track the current display
// item's ASR as we recurse in CreateWebRenderCommandsFromDisplayList. We
// need this so that WebRenderLayerScrollData items that deeper in the
// tree don't duplicate scroll metadata that their ancestors already have.
std::vector<const ActiveScrolledRoot*> mAsrStack;
const ActiveScrolledRoot* mLastAsr;
WebRenderUserDataRefTable mWebRenderUserDatas;
// Store of WebRenderCanvasData objects for use in empty transactions
CanvasDataSet mLastCanvasDatas;
// Store of WebRenderLocalCanvasData objects for use in empty transactions
LocalCanvasDataSet mLastLocalCanvasDatas;
wr::usize mBuilderDumpIndex;
wr::usize mDumpIndent;
public:
// Whether consecutive inactive display items should be grouped into one
// blob image.
bool mDoGrouping;
// True if the most recently build display list contained an svg that
// we did grouping for.
bool mContainsSVGGroup;
};
} // namespace layers
} // namespace mozilla
#endif /* GFX_WEBRENDERCOMMANDBUILDER_H */
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