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https://github.com/mozilla/gecko-dev.git
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1e6ec7ec86
The abstract observer base classes are moved to a separate header file nsRefreshObservers.h and the includes are adjusted accordingly. Some method implementations are moved to the corresponding implementation files to avoid the need to include the nsRefreshDriver.h file in the header. Differential Revision: https://phabricator.services.mozilla.com/D85764
523 lines
16 KiB
C++
523 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/XRSession.h"
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#include "mozilla/dom/XRSessionEvent.h"
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#include "mozilla/dom/XRInputSourceEvent.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/dom/DocumentInlines.h"
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#include "XRSystem.h"
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#include "XRRenderState.h"
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#include "XRBoundedReferenceSpace.h"
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#include "XRFrame.h"
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#include "XRNativeOrigin.h"
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#include "XRNativeOriginFixed.h"
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#include "XRNativeOriginViewer.h"
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#include "XRNativeOriginLocal.h"
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#include "XRNativeOriginLocalFloor.h"
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#include "XRView.h"
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#include "XRViewerPose.h"
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#include "VRLayerChild.h"
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#include "XRInputSourceArray.h"
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#include "nsGlobalWindow.h"
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#include "nsIObserverService.h"
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#include "nsISupportsPrimitives.h"
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#include "nsRefreshDriver.h"
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#include "VRDisplayClient.h"
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#include "VRDisplayPresentation.h"
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/**
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* Maximum instances of XRFrame and XRViewerPose objects
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* created in the pool.
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*/
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const uint32_t kMaxPoolSize = 16;
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namespace mozilla {
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namespace dom {
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NS_IMPL_CYCLE_COLLECTION_CLASS(XRSession)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(XRSession,
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DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mXRSystem)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mActiveRenderState)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPendingRenderState)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInputSources)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mViewerPosePool)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFramePool)
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for (uint32_t i = 0; i < tmp->mFrameRequestCallbacks.Length(); ++i) {
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mFrameRequestCallbacks[i]");
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cb.NoteXPCOMChild(tmp->mFrameRequestCallbacks[i].mCallback);
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(XRSession, DOMEventTargetHelper)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mXRSystem)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mActiveRenderState)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mPendingRenderState)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mInputSources)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mViewerPosePool)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mFramePool)
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tmp->mFrameRequestCallbacks.Clear();
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// Don't need NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER because
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// DOMEventTargetHelper does it for us.
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(XRSession, DOMEventTargetHelper)
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already_AddRefed<XRSession> XRSession::CreateInlineSession(
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nsPIDOMWindowInner* aWindow, XRSystem* aXRSystem,
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const nsTArray<XRReferenceSpaceType>& aEnabledReferenceSpaceTypes) {
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nsGlobalWindowInner* win = nsGlobalWindowInner::Cast(aWindow);
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if (!win) {
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return nullptr;
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}
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Document* doc = aWindow->GetExtantDoc();
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if (!doc) {
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return nullptr;
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}
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nsPresContext* context = doc->GetPresContext();
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if (!context) {
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return nullptr;
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}
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nsRefreshDriver* driver = context->RefreshDriver();
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if (!driver) {
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return nullptr;
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}
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RefPtr<XRSession> session =
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new XRSession(aWindow, aXRSystem, driver, nullptr, gfx::kVRGroupContent,
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aEnabledReferenceSpaceTypes);
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driver->AddRefreshObserver(session, FlushType::Display);
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return session.forget();
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}
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already_AddRefed<XRSession> XRSession::CreateImmersiveSession(
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nsPIDOMWindowInner* aWindow, XRSystem* aXRSystem,
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gfx::VRDisplayClient* aClient, uint32_t aPresentationGroup,
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const nsTArray<XRReferenceSpaceType>& aEnabledReferenceSpaceTypes) {
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RefPtr<XRSession> session =
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new XRSession(aWindow, aXRSystem, nullptr, aClient, aPresentationGroup,
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aEnabledReferenceSpaceTypes);
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return session.forget();
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}
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XRSession::XRSession(
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nsPIDOMWindowInner* aWindow, XRSystem* aXRSystem,
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nsRefreshDriver* aRefreshDriver, gfx::VRDisplayClient* aClient,
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uint32_t aPresentationGroup,
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const nsTArray<XRReferenceSpaceType>& aEnabledReferenceSpaceTypes)
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: DOMEventTargetHelper(aWindow),
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mXRSystem(aXRSystem),
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mShutdown(false),
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mEnded(false),
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mRefreshDriver(aRefreshDriver),
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mDisplayClient(aClient),
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mFrameRequestCallbackCounter(0),
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mEnabledReferenceSpaceTypes(aEnabledReferenceSpaceTypes.Clone()),
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mViewerPosePoolIndex(0),
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mFramePoolIndex(0) {
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if (aClient) {
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aClient->SessionStarted(this);
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}
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mActiveRenderState = new XRRenderState(aWindow, this);
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mStartTimeStamp = TimeStamp::Now();
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if (IsImmersive()) {
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mDisplayPresentation =
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mDisplayClient->BeginPresentation({}, aPresentationGroup);
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}
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if (mDisplayClient) {
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mDisplayClient->SetXRAPIMode(gfx::VRAPIMode::WebXR);
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}
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// TODO: Handle XR input sources are no longer available cases.
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// https://immersive-web.github.io/webxr/#dom-xrsession-inputsources
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mInputSources = new XRInputSourceArray(aWindow);
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}
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XRSession::~XRSession() { MOZ_ASSERT(mShutdown); }
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gfx::VRDisplayClient* XRSession::GetDisplayClient() const {
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return mDisplayClient;
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}
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JSObject* XRSession::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return XRSession_Binding::Wrap(aCx, this, aGivenProto);
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}
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bool XRSession::IsEnded() const { return mEnded; }
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already_AddRefed<Promise> XRSession::End(ErrorResult& aRv) {
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nsCOMPtr<nsIGlobalObject> global = GetParentObject();
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NS_ENSURE_TRUE(global, nullptr);
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ExitPresentInternal();
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RefPtr<Promise> promise = Promise::Create(global, aRv);
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NS_ENSURE_TRUE(!aRv.Failed(), nullptr);
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promise->MaybeResolve(JS::UndefinedHandleValue);
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return promise.forget();
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}
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bool XRSession::IsImmersive() const {
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// Only immersive sessions have a VRDisplayClient
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return mDisplayClient != nullptr;
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}
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XRVisibilityState XRSession::VisibilityState() {
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return XRVisibilityState::Visible;
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// TODO (Bug 1609771): Implement changing visibility state
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}
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// https://immersive-web.github.io/webxr/#dom-xrsession-updaterenderstate
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void XRSession::UpdateRenderState(const XRRenderStateInit& aNewState,
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ErrorResult& aRv) {
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if (mEnded) {
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aRv.ThrowInvalidStateError(
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"UpdateRenderState can not be called on an XRSession that has ended.");
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return;
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}
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if (aNewState.mBaseLayer.WasPassed() &&
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aNewState.mBaseLayer.Value()->mSession != this) {
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aRv.ThrowInvalidStateError(
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"The baseLayer passed in to UpdateRenderState must "
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"belong to the XRSession that UpdateRenderState is "
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"being called on.");
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return;
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}
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if (aNewState.mInlineVerticalFieldOfView.WasPassed() && IsImmersive()) {
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aRv.ThrowInvalidStateError(
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"The inlineVerticalFieldOfView can not be set on an "
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"XRRenderState for an immersive XRSession.");
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return;
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}
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if (mPendingRenderState == nullptr) {
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mPendingRenderState = new XRRenderState(*mActiveRenderState);
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}
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if (aNewState.mDepthNear.WasPassed()) {
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mPendingRenderState->SetDepthNear(aNewState.mDepthNear.Value());
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}
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if (aNewState.mDepthFar.WasPassed()) {
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mPendingRenderState->SetDepthFar(aNewState.mDepthFar.Value());
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}
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if (aNewState.mInlineVerticalFieldOfView.WasPassed()) {
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mPendingRenderState->SetInlineVerticalFieldOfView(
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aNewState.mInlineVerticalFieldOfView.Value());
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}
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if (aNewState.mBaseLayer.WasPassed()) {
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mPendingRenderState->SetBaseLayer(aNewState.mBaseLayer.Value());
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}
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}
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XRRenderState* XRSession::RenderState() { return mActiveRenderState; }
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XRInputSourceArray* XRSession::InputSources() { return mInputSources; }
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// https://immersive-web.github.io/webxr/#apply-the-pending-render-state
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void XRSession::ApplyPendingRenderState() {
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if (mPendingRenderState == nullptr) {
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return;
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}
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mActiveRenderState = mPendingRenderState;
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mPendingRenderState = nullptr;
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// https://immersive-web.github.io/webxr/#minimum-inline-field-of-view
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const double kMinimumInlineVerticalFieldOfView = 0.0f;
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// https://immersive-web.github.io/webxr/#maximum-inline-field-of-view
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const double kMaximumInlineVerticalFieldOfView = M_PI;
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if (!mActiveRenderState->GetInlineVerticalFieldOfView().IsNull()) {
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double verticalFOV =
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mActiveRenderState->GetInlineVerticalFieldOfView().Value();
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if (verticalFOV < kMinimumInlineVerticalFieldOfView) {
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verticalFOV = kMinimumInlineVerticalFieldOfView;
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}
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if (verticalFOV > kMaximumInlineVerticalFieldOfView) {
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verticalFOV = kMaximumInlineVerticalFieldOfView;
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}
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mActiveRenderState->SetInlineVerticalFieldOfView(verticalFOV);
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}
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// Our minimum near plane value is set to a small value close but not equal to
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// zero (kEpsilon) The maximum far plane is infinite.
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const float kEpsilon = 0.00001f;
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double depthNear = mActiveRenderState->DepthNear();
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double depthFar = mActiveRenderState->DepthFar();
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if (depthNear < 0.0f) {
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depthNear = 0.0f;
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}
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if (depthFar < 0.0f) {
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depthFar = 0.0f;
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}
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// Ensure at least a small distance between the near and far planes
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if (fabs(depthFar - depthNear) < kEpsilon) {
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depthFar = depthNear + kEpsilon;
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}
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mActiveRenderState->SetDepthNear(depthNear);
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mActiveRenderState->SetDepthFar(depthFar);
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XRWebGLLayer* baseLayer = mActiveRenderState->GetBaseLayer();
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if (baseLayer) {
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if (!IsImmersive() && baseLayer->mCompositionDisabled) {
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mActiveRenderState->SetCompositionDisabled(true);
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mActiveRenderState->SetOutputCanvas(baseLayer->GetCanvas());
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} else {
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mActiveRenderState->SetCompositionDisabled(false);
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mActiveRenderState->SetOutputCanvas(nullptr);
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mDisplayPresentation->UpdateXRWebGLLayer(baseLayer);
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}
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} // if (baseLayer)
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}
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void XRSession::WillRefresh(mozilla::TimeStamp aTime) {
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// Inline sessions are driven by nsRefreshDriver directly,
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// unlike immersive sessions, which are driven VRDisplayClient.
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if (!IsImmersive() && !mXRSystem->HasActiveImmersiveSession()) {
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nsGlobalWindowInner* win = nsGlobalWindowInner::Cast(GetOwner());
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if (win) {
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if (JSObject* obj = win->AsGlobal()->GetGlobalJSObject()) {
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js::NotifyAnimationActivity(obj);
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}
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}
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StartFrame();
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}
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}
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void XRSession::StartFrame() {
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if (mShutdown || mEnded) {
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return;
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}
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ApplyPendingRenderState();
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XRWebGLLayer* baseLayer = mActiveRenderState->GetBaseLayer();
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if (!baseLayer) {
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return;
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}
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if (!IsImmersive() && mActiveRenderState->GetOutputCanvas() == nullptr) {
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return;
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}
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// Determine timestamp for the callbacks
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TimeStamp nowTime = TimeStamp::Now();
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mozilla::TimeDuration duration = nowTime - mStartTimeStamp;
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DOMHighResTimeStamp timeStamp = duration.ToMilliseconds();
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// Create an XRFrame for the callbacks
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RefPtr<XRFrame> frame = PooledFrame();
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frame->StartAnimationFrame();
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baseLayer->StartAnimationFrame();
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nsTArray<XRFrameRequest> callbacks;
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callbacks.AppendElements(mFrameRequestCallbacks);
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mFrameRequestCallbacks.Clear();
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for (auto& callback : callbacks) {
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callback.Call(timeStamp, *frame);
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}
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baseLayer->EndAnimationFrame();
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frame->EndAnimationFrame();
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if (mDisplayPresentation) {
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mDisplayPresentation->SubmitFrame();
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}
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}
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void XRSession::ExitPresent() { ExitPresentInternal(); }
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already_AddRefed<Promise> XRSession::RequestReferenceSpace(
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const XRReferenceSpaceType& aReferenceSpaceType, ErrorResult& aRv) {
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nsCOMPtr<nsIGlobalObject> global = GetParentObject();
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NS_ENSURE_TRUE(global, nullptr);
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RefPtr<Promise> promise = Promise::Create(global, aRv);
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NS_ENSURE_TRUE(!aRv.Failed(), nullptr);
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if (!mEnabledReferenceSpaceTypes.Contains(aReferenceSpaceType)) {
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promise->MaybeRejectWithNotSupportedError(nsLiteralCString(
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"Requested XRReferenceSpaceType not available for the XRSession."));
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return promise.forget();
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}
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RefPtr<XRReferenceSpace> space;
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RefPtr<XRNativeOrigin> nativeOrigin;
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if (mDisplayClient) {
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switch (aReferenceSpaceType) {
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case XRReferenceSpaceType::Viewer:
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nativeOrigin = new XRNativeOriginViewer(mDisplayClient);
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break;
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case XRReferenceSpaceType::Local:
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nativeOrigin = new XRNativeOriginLocal(mDisplayClient);
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break;
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case XRReferenceSpaceType::Local_floor:
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case XRReferenceSpaceType::Bounded_floor:
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nativeOrigin = new XRNativeOriginLocalFloor(mDisplayClient);
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break;
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default:
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nativeOrigin = new XRNativeOriginFixed(gfx::PointDouble3D());
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break;
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}
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} else {
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// We currently only support XRReferenceSpaceType::Viewer when
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// there is no XR hardware. In this case, the native origin
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// will always be at {0, 0, 0} which will always be the same
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// as the 'tracked' position of the non-existant pose.
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MOZ_ASSERT(aReferenceSpaceType == XRReferenceSpaceType::Viewer);
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nativeOrigin = new XRNativeOriginFixed(gfx::PointDouble3D());
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}
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if (aReferenceSpaceType == XRReferenceSpaceType::Bounded_floor) {
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space = new XRBoundedReferenceSpace(GetParentObject(), this, nativeOrigin);
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} else {
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space = new XRReferenceSpace(GetParentObject(), this, nativeOrigin,
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aReferenceSpaceType);
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}
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promise->MaybeResolve(space);
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return promise.forget();
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}
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XRRenderState* XRSession::GetActiveRenderState() const {
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return mActiveRenderState;
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}
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void XRSession::XRFrameRequest::Call(const DOMHighResTimeStamp& aTimeStamp,
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XRFrame& aFrame) {
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RefPtr<mozilla::dom::XRFrameRequestCallback> callback = mCallback;
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callback->Call(aTimeStamp, aFrame);
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}
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int32_t XRSession::RequestAnimationFrame(XRFrameRequestCallback& aCallback,
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ErrorResult& aError) {
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if (mShutdown) {
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return 0;
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}
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int32_t handle = ++mFrameRequestCallbackCounter;
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mFrameRequestCallbacks.AppendElement(XRFrameRequest(aCallback, handle));
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return handle;
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}
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void XRSession::CancelAnimationFrame(int32_t aHandle, ErrorResult& aError) {
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mFrameRequestCallbacks.RemoveElementSorted(aHandle);
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}
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void XRSession::Shutdown() {
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mShutdown = true;
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ExitPresentInternal();
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mViewerPosePool.Clear();
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mViewerPosePoolIndex = 0;
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mFramePool.Clear();
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mFramePoolIndex = 0;
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mActiveRenderState = nullptr;
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mPendingRenderState = nullptr;
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mFrameRequestCallbacks.Clear();
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// Unregister from nsRefreshObserver
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if (mRefreshDriver) {
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mRefreshDriver->RemoveRefreshObserver(this, FlushType::Display);
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mRefreshDriver = nullptr;
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}
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}
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void XRSession::ExitPresentInternal() {
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if (mInputSources) {
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mInputSources->Clear(this);
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}
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if (mDisplayClient) {
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mDisplayClient->SessionEnded(this);
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}
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if (mXRSystem) {
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mXRSystem->SessionEnded(this);
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}
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if (mActiveRenderState) {
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mActiveRenderState->SessionEnded();
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}
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if (mPendingRenderState) {
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mPendingRenderState->SessionEnded();
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}
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mDisplayPresentation = nullptr;
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if (!mEnded) {
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mEnded = true;
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XRSessionEventInit init;
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init.mBubbles = false;
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init.mCancelable = false;
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init.mSession = this;
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RefPtr<XRSessionEvent> event =
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XRSessionEvent::Constructor(this, u"end"_ns, init);
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event->SetTrusted(true);
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this->DispatchEvent(*event);
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}
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}
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void XRSession::DisconnectFromOwner() {
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MOZ_ASSERT(NS_IsMainThread());
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Shutdown();
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DOMEventTargetHelper::DisconnectFromOwner();
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}
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void XRSession::LastRelease() {
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// We don't want to wait for the GC to free up the presentation
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// for use in other documents, so we do this in LastRelease().
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Shutdown();
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}
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RefPtr<XRViewerPose> XRSession::PooledViewerPose(
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const gfx::Matrix4x4Double& aTransform, bool aEmulatedPosition) {
|
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RefPtr<XRViewerPose> pose;
|
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if (mViewerPosePool.Length() > mViewerPosePoolIndex) {
|
|
pose = mViewerPosePool.ElementAt(mViewerPosePoolIndex);
|
|
pose->Transform()->Update(aTransform);
|
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pose->SetEmulatedPosition(aEmulatedPosition);
|
|
} else {
|
|
RefPtr<XRRigidTransform> transform = new XRRigidTransform(this, aTransform);
|
|
nsTArray<RefPtr<XRView>> views;
|
|
if (IsImmersive()) {
|
|
views.AppendElement(new XRView(GetParentObject(), XREye::Left));
|
|
views.AppendElement(new XRView(GetParentObject(), XREye::Right));
|
|
} else {
|
|
views.AppendElement(new XRView(GetParentObject(), XREye::None));
|
|
}
|
|
pose = new XRViewerPose(this, transform, aEmulatedPosition, views);
|
|
mViewerPosePool.AppendElement(pose);
|
|
}
|
|
|
|
mViewerPosePoolIndex++;
|
|
if (mViewerPosePoolIndex >= kMaxPoolSize) {
|
|
mViewerPosePoolIndex = 0;
|
|
}
|
|
|
|
return pose;
|
|
}
|
|
|
|
RefPtr<XRFrame> XRSession::PooledFrame() {
|
|
RefPtr<XRFrame> frame;
|
|
if (mFramePool.Length() > mFramePoolIndex) {
|
|
frame = mFramePool.ElementAt(mFramePoolIndex);
|
|
} else {
|
|
frame = new XRFrame(GetParentObject(), this);
|
|
mFramePool.AppendElement(frame);
|
|
}
|
|
|
|
return frame;
|
|
}
|
|
|
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} // namespace dom
|
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} // namespace mozilla
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