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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
#include "base/basictypes.h"
#include "mozilla/PresShell.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/BrowserParent.h"
#include "mozilla/layers/CompositorBridgeParent.h"
#include "mozilla/layers/CompositorTypes.h"
#include "nsFrameLoader.h"
#include "nsStyleStructInlines.h"
#include "nsSubDocumentFrame.h"
#include "RemoteLayerTreeOwner.h"
#include "mozilla/gfx/GPUProcessManager.h"
#include "mozilla/layers/CompositorBridgeChild.h"
#include "mozilla/layers/WebRenderLayerManager.h"
#include "mozilla/layers/WebRenderScrollData.h"
#include "mozilla/webrender/WebRenderAPI.h"
#include "mozilla/dom/EffectsInfo.h"
using namespace mozilla::dom;
using namespace mozilla::gfx;
using namespace mozilla::layers;
namespace mozilla {
namespace layout {
static already_AddRefed<WindowRenderer> GetWindowRenderer(
BrowserParent* aBrowserParent) {
RefPtr<WindowRenderer> renderer;
if (Element* element = aBrowserParent->GetOwnerElement()) {
renderer = nsContentUtils::WindowRendererForContent(element);
if (renderer) {
return renderer.forget();
}
renderer = nsContentUtils::WindowRendererForDocument(element->OwnerDoc());
if (renderer) {
return renderer.forget();
}
}
return nullptr;
}
RemoteLayerTreeOwner::RemoteLayerTreeOwner()
: mLayersId{0},
mBrowserParent(nullptr),
mInitialized(false),
mLayersConnected(false) {}
RemoteLayerTreeOwner::~RemoteLayerTreeOwner() = default;
bool RemoteLayerTreeOwner::Initialize(BrowserParent* aBrowserParent) {
if (mInitialized || !aBrowserParent) {
return false;
}
mBrowserParent = aBrowserParent;
RefPtr<WindowRenderer> renderer = GetWindowRenderer(mBrowserParent);
PCompositorBridgeChild* compositor =
renderer ? renderer->GetCompositorBridgeChild() : nullptr;
mTabProcessId = mBrowserParent->Manager()->OtherPid();
// Our remote frame will push layers updates to the compositor,
// and we'll keep an indirect reference to that tree.
GPUProcessManager* gpm = GPUProcessManager::Get();
mLayersConnected = gpm->AllocateAndConnectLayerTreeId(
compositor, mTabProcessId, &mLayersId, &mCompositorOptions);
mInitialized = true;
return true;
}
void RemoteLayerTreeOwner::Destroy() {
if (mLayersId.IsValid()) {
GPUProcessManager::Get()->UnmapLayerTreeId(mLayersId, mTabProcessId);
}
mBrowserParent = nullptr;
mWindowRenderer = nullptr;
}
void RemoteLayerTreeOwner::EnsureLayersConnected(
CompositorOptions* aCompositorOptions) {
RefPtr<WindowRenderer> renderer = GetWindowRenderer(mBrowserParent);
if (!renderer) {
return;
}
if (!renderer->GetCompositorBridgeChild()) {
return;
}
mLayersConnected =
renderer->GetCompositorBridgeChild()->SendNotifyChildRecreated(
mLayersId, &mCompositorOptions);
*aCompositorOptions = mCompositorOptions;
}
bool RemoteLayerTreeOwner::AttachWindowRenderer() {
RefPtr<WindowRenderer> renderer;
if (mBrowserParent) {
renderer = GetWindowRenderer(mBrowserParent);
}
// Perhaps the document containing this frame currently has no presentation?
if (renderer && renderer->GetCompositorBridgeChild() &&
renderer != mWindowRenderer) {
mLayersConnected =
renderer->GetCompositorBridgeChild()->SendAdoptChild(mLayersId);
}
mWindowRenderer = std::move(renderer);
return !!mWindowRenderer;
}
void RemoteLayerTreeOwner::OwnerContentChanged() {
Unused << AttachWindowRenderer();
}
void RemoteLayerTreeOwner::GetTextureFactoryIdentifier(
TextureFactoryIdentifier* aTextureFactoryIdentifier) const {
RefPtr<WindowRenderer> renderer =
mBrowserParent ? GetWindowRenderer(mBrowserParent) : nullptr;
// Perhaps the document containing this frame currently has no presentation?
if (renderer && renderer->AsWebRender()) {
*aTextureFactoryIdentifier =
renderer->AsWebRender()->GetTextureFactoryIdentifier();
} else {
*aTextureFactoryIdentifier = TextureFactoryIdentifier();
}
}
} // namespace layout
} // namespace mozilla