gfx/ipc/InProcessCompositorSession.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "InProcessCompositorSession.h"
   8
   9 #include "mozilla/gfx/GPUProcessManager.h"
  10 #include "mozilla/layers/CompositorBridgeChild.h"
  11 #include "mozilla/layers/CompositorBridgeParent.h"
  12 #include "mozilla/layers/CompositorManagerChild.h"
  13 #include "mozilla/layers/CompositorManagerParent.h"
  14 #include "mozilla/layers/IAPZCTreeManager.h"
  15 #include "mozilla/widget/CompositorWidget.h"
  16 #include "mozilla/widget/PlatformWidgetTypes.h"
  17 #include "nsBaseWidget.h"
  18
  19 namespace mozilla {
  20 namespace layers {
  21
  22 InProcessCompositorSession::InProcessCompositorSession(
  23     nsBaseWidget* aWidget, widget::CompositorWidget* aCompositorWidget,
  24     CompositorBridgeChild* aChild, CompositorBridgeParent* aParent)
  25     : CompositorSession(aWidget, aCompositorWidget->AsDelegate(), aChild,
  26                         aParent->RootLayerTreeId()),
  27       mCompositorBridgeParent(aParent),
  28       mCompositorWidget(aCompositorWidget) {
  29   gfx::GPUProcessManager::Get()->RegisterInProcessSession(this);
  30 }
  31
  32 /* static */
  33 RefPtr<InProcessCompositorSession> InProcessCompositorSession::Create(
  34     nsBaseWidget* aWidget, WebRenderLayerManager* aLayerManager,
  35     const LayersId& aRootLayerTreeId, CSSToLayoutDeviceScale aScale,
  36     const CompositorOptions& aOptions, bool aUseExternalSurfaceSize,
  37     const gfx::IntSize& aSurfaceSize, uint32_t aNamespace) {
  38   widget::CompositorWidgetInitData initData;
  39   aWidget->GetCompositorWidgetInitData(&initData);
  40
  41   RefPtr<CompositorWidget> widget =
  42       CompositorWidget::CreateLocal(initData, aOptions, aWidget);
  43   RefPtr<CompositorBridgeParent> parent =
  44       CompositorManagerParent::CreateSameProcessWidgetCompositorBridge(
  45           aScale, aOptions, aUseExternalSurfaceSize, aSurfaceSize);
  46   MOZ_ASSERT(parent);
  47   parent->InitSameProcess(widget, aRootLayerTreeId);
  48
  49   RefPtr<CompositorBridgeChild> child =
  50       CompositorManagerChild::CreateSameProcessWidgetCompositorBridge(
  51           aLayerManager, aNamespace);
  52   MOZ_ASSERT(child);
  53
  54   return new InProcessCompositorSession(aWidget, widget, child, parent);
  55 }
  56
  57 void InProcessCompositorSession::NotifySessionLost() {
  58   mWidget->NotifyCompositorSessionLost(this);
  59 }
  60
  61 CompositorBridgeParent* InProcessCompositorSession::GetInProcessBridge() const {
  62   return mCompositorBridgeParent;
  63 }
  64
  65 void InProcessCompositorSession::SetContentController(
  66     GeckoContentController* aController) {
  67   mCompositorBridgeParent->SetControllerForLayerTree(mRootLayerTreeId,
  68                                                      aController);
  69 }
  70
  71 RefPtr<IAPZCTreeManager> InProcessCompositorSession::GetAPZCTreeManager()
  72     const {
  73   return mCompositorBridgeParent->GetAPZCTreeManager(mRootLayerTreeId);
  74 }
  75
  76 nsIWidget* InProcessCompositorSession::GetWidget() const { return mWidget; }
  77
  78 void InProcessCompositorSession::Shutdown() {
  79   // Destroy will synchronously wait for the parent to acknowledge shutdown,
  80   // at which point CBP will defer a Release on the compositor thread. We
  81   // can safely release our reference now, and let the destructor run on either
  82   // thread.
  83 #if defined(MOZ_WIDGET_ANDROID)
  84   if (mUiCompositorControllerChild) {
  85     mUiCompositorControllerChild->Destroy();
  86     mUiCompositorControllerChild = nullptr;
  87   }
  88 #endif  // defined(MOZ_WIDGET_ANDROID)
  89   mCompositorBridgeChild->Destroy();
  90   mCompositorBridgeChild = nullptr;
  91   mCompositorBridgeParent = nullptr;
  92   mCompositorWidget = nullptr;
  93   gfx::GPUProcessManager::Get()->UnregisterInProcessSession(this);
  94 }
  95
  96 }  // namespace layers
  97 }  // namespace mozilla