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-rw-r--r--widget/windows/CompositorWidgetParent.cpp239
1 files changed, 239 insertions, 0 deletions
diff --git a/widget/windows/CompositorWidgetParent.cpp b/widget/windows/CompositorWidgetParent.cpp
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+++ b/widget/windows/CompositorWidgetParent.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "CompositorWidgetParent.h"
+
+#include "mozilla/Unused.h"
+#include "mozilla/StaticPrefs_layers.h"
+#include "mozilla/gfx/DeviceManagerDx.h"
+#include "mozilla/gfx/Point.h"
+#include "mozilla/layers/Compositor.h"
+#include "mozilla/layers/CompositorBridgeParent.h"
+#include "mozilla/layers/CompositorThread.h"
+#include "mozilla/webrender/RenderThread.h"
+#include "mozilla/widget/PlatformWidgetTypes.h"
+#include "nsWindow.h"
+#include "VsyncDispatcher.h"
+#include "WinCompositorWindowThread.h"
+#include "VRShMem.h"
+#include "RemoteBackbuffer.h"
+
+#include <ddraw.h>
+
+namespace mozilla {
+namespace widget {
+
+using namespace mozilla::gfx;
+using namespace mozilla;
+
+CompositorWidgetParent::CompositorWidgetParent(
+ const CompositorWidgetInitData& aInitData,
+ const layers::CompositorOptions& aOptions)
+ : WinCompositorWidget(aInitData.get_WinCompositorWidgetInitData(),
+ aOptions),
+ mWnd(reinterpret_cast<HWND>(
+ aInitData.get_WinCompositorWidgetInitData().hWnd())),
+ mTransparencyMode(uint32_t(
+ aInitData.get_WinCompositorWidgetInitData().transparencyMode())),
+ mSizeMode(nsSizeMode_Normal),
+ mIsFullyOccluded(false),
+ mRemoteBackbufferClient() {
+ MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_GPU);
+ MOZ_ASSERT(mWnd && ::IsWindow(mWnd));
+}
+
+CompositorWidgetParent::~CompositorWidgetParent() {}
+
+bool CompositorWidgetParent::Initialize(
+ const RemoteBackbufferHandles& aRemoteHandles) {
+ mRemoteBackbufferClient = std::make_unique<remote_backbuffer::Client>();
+ if (!mRemoteBackbufferClient->Initialize(aRemoteHandles)) {
+ return false;
+ }
+
+ return true;
+}
+
+bool CompositorWidgetParent::PreRender(WidgetRenderingContext* aContext) {
+ // This can block waiting for WM_SETTEXT to finish
+ // Using PreRender is unnecessarily pessimistic because
+ // we technically only need to block during the present call
+ // not all of compositor rendering
+ mPresentLock.Enter();
+ return true;
+}
+
+void CompositorWidgetParent::PostRender(WidgetRenderingContext* aContext) {
+ mPresentLock.Leave();
+}
+
+LayoutDeviceIntSize CompositorWidgetParent::GetClientSize() {
+ RECT r;
+ if (!::GetClientRect(mWnd, &r)) {
+ return LayoutDeviceIntSize();
+ }
+ return LayoutDeviceIntSize(r.right - r.left, r.bottom - r.top);
+}
+
+already_AddRefed<gfx::DrawTarget>
+CompositorWidgetParent::StartRemoteDrawingInRegion(
+ const LayoutDeviceIntRegion& aInvalidRegion,
+ layers::BufferMode* aBufferMode) {
+ MOZ_ASSERT(mRemoteBackbufferClient);
+ MOZ_ASSERT(aBufferMode);
+
+ // Because we use remote backbuffering, there is no need to use a local
+ // backbuffer too.
+ (*aBufferMode) = layers::BufferMode::BUFFER_NONE;
+
+ return mRemoteBackbufferClient->BorrowDrawTarget();
+}
+
+void CompositorWidgetParent::EndRemoteDrawingInRegion(
+ gfx::DrawTarget* aDrawTarget, const LayoutDeviceIntRegion& aInvalidRegion) {
+ Unused << mRemoteBackbufferClient->PresentDrawTarget(
+ aInvalidRegion.ToUnknownRegion());
+}
+
+bool CompositorWidgetParent::NeedsToDeferEndRemoteDrawing() { return false; }
+
+already_AddRefed<gfx::DrawTarget>
+CompositorWidgetParent::GetBackBufferDrawTarget(gfx::DrawTarget* aScreenTarget,
+ const gfx::IntRect& aRect,
+ bool* aOutIsCleared) {
+ MOZ_CRASH(
+ "Unexpected call to GetBackBufferDrawTarget() with remote "
+ "backbuffering in use");
+}
+
+already_AddRefed<gfx::SourceSurface>
+CompositorWidgetParent::EndBackBufferDrawing() {
+ MOZ_CRASH(
+ "Unexpected call to EndBackBufferDrawing() with remote "
+ "backbuffering in use");
+}
+
+bool CompositorWidgetParent::InitCompositor(layers::Compositor* aCompositor) {
+ return true;
+}
+
+bool CompositorWidgetParent::HasGlass() const {
+ MOZ_ASSERT(layers::CompositorThreadHolder::IsInCompositorThread() ||
+ wr::RenderThread::IsInRenderThread());
+
+ return mTransparencyMode == uint32_t(TransparencyMode::BorderlessGlass);
+}
+
+bool CompositorWidgetParent::IsHidden() const { return ::IsIconic(mWnd); }
+
+mozilla::ipc::IPCResult CompositorWidgetParent::RecvInitialize(
+ const RemoteBackbufferHandles& aRemoteHandles) {
+ Unused << Initialize(aRemoteHandles);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult CompositorWidgetParent::RecvEnterPresentLock() {
+ mPresentLock.Enter();
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult CompositorWidgetParent::RecvLeavePresentLock() {
+ mPresentLock.Leave();
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult CompositorWidgetParent::RecvUpdateTransparency(
+ const TransparencyMode& aMode) {
+ mTransparencyMode = uint32_t(aMode);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult CompositorWidgetParent::RecvNotifyVisibilityUpdated(
+ const nsSizeMode& aSizeMode, const bool& aIsFullyOccluded) {
+ mSizeMode = aSizeMode;
+ mIsFullyOccluded = aIsFullyOccluded;
+ return IPC_OK();
+}
+
+nsSizeMode CompositorWidgetParent::CompositorWidgetParent::GetWindowSizeMode()
+ const {
+ nsSizeMode sizeMode = mSizeMode;
+ return sizeMode;
+}
+
+bool CompositorWidgetParent::CompositorWidgetParent::GetWindowIsFullyOccluded()
+ const {
+ bool isFullyOccluded = mIsFullyOccluded;
+ return isFullyOccluded;
+}
+
+mozilla::ipc::IPCResult CompositorWidgetParent::RecvClearTransparentWindow() {
+ gfx::CriticalSectionAutoEnter lock(&mPresentLock);
+
+ RefPtr<DrawTarget> drawTarget = mRemoteBackbufferClient->BorrowDrawTarget();
+ if (!drawTarget) {
+ return IPC_OK();
+ }
+
+ IntSize size = drawTarget->GetSize();
+ if (size.IsEmpty()) {
+ return IPC_OK();
+ }
+
+ drawTarget->ClearRect(Rect(0, 0, size.width, size.height));
+
+ Unused << mRemoteBackbufferClient->PresentDrawTarget(
+ IntRect(0, 0, size.width, size.height));
+
+ return IPC_OK();
+}
+
+nsIWidget* CompositorWidgetParent::RealWidget() { return nullptr; }
+
+void CompositorWidgetParent::ObserveVsync(VsyncObserver* aObserver) {
+ if (aObserver) {
+ Unused << SendObserveVsync();
+ } else {
+ Unused << SendUnobserveVsync();
+ }
+ mVsyncObserver = aObserver;
+}
+
+RefPtr<VsyncObserver> CompositorWidgetParent::GetVsyncObserver() const {
+ MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_GPU);
+ return mVsyncObserver;
+}
+
+void CompositorWidgetParent::UpdateCompositorWnd(const HWND aCompositorWnd,
+ const HWND aParentWnd) {
+ MOZ_ASSERT(layers::CompositorThreadHolder::IsInCompositorThread());
+ MOZ_ASSERT(mRootLayerTreeID.isSome());
+
+ RefPtr<CompositorWidgetParent> self = this;
+ SendUpdateCompositorWnd(reinterpret_cast<WindowsHandle>(aCompositorWnd),
+ reinterpret_cast<WindowsHandle>(aParentWnd))
+ ->Then(
+ layers::CompositorThread(), __func__,
+ [self](const bool& aSuccess) {
+ if (aSuccess && self->mRootLayerTreeID.isSome() &&
+ layers::CompositorThreadHolder::IsActive()) {
+ self->mSetParentCompleted = true;
+ // Schedule composition after ::SetParent() call in parent
+ // process.
+ layers::CompositorBridgeParent::ScheduleForcedComposition(
+ self->mRootLayerTreeID.ref(), wr::RenderReasons::WIDGET);
+ }
+ },
+ [self](const mozilla::ipc::ResponseRejectReason&) {});
+}
+
+void CompositorWidgetParent::SetRootLayerTreeID(
+ const layers::LayersId& aRootLayerTreeId) {
+ mRootLayerTreeID = Some(aRootLayerTreeId);
+}
+
+void CompositorWidgetParent::ActorDestroy(ActorDestroyReason aWhy) {}
+
+} // namespace widget
+} // namespace mozilla