void
VRManager::NotifyVsync(const TimeStamp& aVsyncTimestamp)
{
const double kVRDisplayRefreshMaxDuration = 5000; // milliseconds
bool bHaveEventListener = false;
for (auto iter = mVRManagerParents.Iter(); !iter.Done(); iter.Next()) {
VRManagerParent *vmp = iter.Get()->GetKey();
if (mVRDisplays.Count()) {
Unused << vmp->SendNotifyVSync();
}
bHaveEventListener |= vmp->HaveEventListener();
}
for (auto iter = mVRDisplays.Iter(); !iter.Done(); iter.Next()) {
gfx::VRDisplayHost* display = iter.UserData();
display->NotifyVSync();
}
if (bHaveEventListener) {
// If content has set an EventHandler to be notified of VR display events
// we must continually refresh the VR display enumeration to check
// for events that we must fire such as Window.onvrdisplayconnect
// Note that enumeration itself may activate display hardware, such
// as Oculus, so we only do this when we know we are displaying content
// that is looking for VR displays.
if (mLastRefreshTime.IsNull()) {
// This is the first vsync, must refresh VR displays
RefreshVRDisplays();
RefreshVRControllers();
mLastRefreshTime = TimeStamp::Now();
} else {
// We don't have to do this every frame, so check if we
// have refreshed recently.
TimeDuration duration = TimeStamp::Now() - mLastRefreshTime;
if (duration.ToMilliseconds() > kVRDisplayRefreshMaxDuration) {
RefreshVRDisplays();
RefreshVRControllers();
mLastRefreshTime = TimeStamp::Now();
}
}
}
}
void
VRManager::NotifyVsync(const TimeStamp& aVsyncTimestamp)
{
const double kVRDisplayRefreshMaxDuration = 5000; // milliseconds
const double kVRDisplayInactiveMaxDuration = 30000; // milliseconds
bool bHaveEventListener = false;
bool bHaveControllerListener = false;
for (auto iter = mVRManagerParents.Iter(); !iter.Done(); iter.Next()) {
VRManagerParent *vmp = iter.Get()->GetKey();
bHaveEventListener |= vmp->HaveEventListener();
bHaveControllerListener |= vmp->HaveControllerListener();
}
// VRDisplayHost::NotifyVSync may modify mVRDisplays, so we iterate
// through a local copy here.
nsTArray<RefPtr<VRDisplayHost>> displays;
for (auto iter = mVRDisplays.Iter(); !iter.Done(); iter.Next()) {
displays.AppendElement(iter.UserData());
}
for (const auto& display: displays) {
display->NotifyVSync();
}
if (bHaveEventListener) {
// If content has set an EventHandler to be notified of VR display events
// we must continually refresh the VR display enumeration to check
// for events that we must fire such as Window.onvrdisplayconnect
// Note that enumeration itself may activate display hardware, such
// as Oculus, so we only do this when we know we are displaying content
// that is looking for VR displays.
if (mLastRefreshTime.IsNull()) {
// This is the first vsync, must refresh VR displays
RefreshVRDisplays();
if (bHaveControllerListener) {
RefreshVRControllers();
}
mLastRefreshTime = TimeStamp::Now();
} else {
// We don't have to do this every frame, so check if we
// have refreshed recently.
TimeDuration duration = TimeStamp::Now() - mLastRefreshTime;
if (duration.ToMilliseconds() > kVRDisplayRefreshMaxDuration) {
RefreshVRDisplays();
if (bHaveControllerListener) {
RefreshVRControllers();
}
mLastRefreshTime = TimeStamp::Now();
}
}
if (bHaveControllerListener) {
for (const auto& manager: mManagers) {
if (!manager->GetIsPresenting()) {
manager->HandleInput();
}
}
}
}
// Shut down the VR devices when not in use
if (bHaveEventListener || bHaveControllerListener) {
// We are using a VR device, keep it alive
mLastActiveTime = TimeStamp::Now();
} else if (mLastActiveTime.IsNull()) {
Shutdown();
} else {
TimeDuration duration = TimeStamp::Now() - mLastActiveTime;
if (duration.ToMilliseconds() > kVRDisplayInactiveMaxDuration) {
Shutdown();
}
}
}