void
VRDisplayClient::NotifyVRVsync()
{
VRManagerChild *vm = VRManagerChild::Get();
vm->RunFrameRequestCallbacks();
mLastVSyncTime = TimeStamp::Now();
}
VRHMDSensorState
VRDisplayClient::GetSensorState()
{
VRHMDSensorState sensorState;
VRManagerChild *vm = VRManagerChild::Get();
Unused << vm->SendGetSensorState(mDisplayInfo.mDisplayID, &sensorState);
return sensorState;
}
void
VRDisplayClient::NotifyVsync()
{
VRManagerChild *vm = VRManagerChild::Get();
bool isPresenting = GetIsPresenting();
bool bShouldCallback = !isPresenting;
if (mLastVSyncTime.IsNull()) {
bShouldCallback = true;
} else {
TimeDuration duration = TimeStamp::Now() - mLastVSyncTime;
if (duration.ToMilliseconds() > kVRDisplayRAFMaxDuration) {
bShouldCallback = true;
}
}
if (bShouldCallback) {
vm->RunFrameRequestCallbacks();
mLastVSyncTime = TimeStamp::Now();
}
// Check if we need to trigger onVRDisplayPresentChange event
if (bLastEventWasPresenting != isPresenting) {
bLastEventWasPresenting = isPresenting;
vm->FireDOMVRDisplayPresentChangeEvent(mDisplayInfo.mDisplayID);
}
// Check if we need to trigger onvrdisplayactivate event
if (!bLastEventWasMounted && mDisplayInfo.mIsMounted) {
bLastEventWasMounted = true;
if (gfxPrefs::VRAutoActivateEnabled()) {
vm->FireDOMVRDisplayMountedEvent(mDisplayInfo.mDisplayID);
}
}
// Check if we need to trigger onvrdisplaydeactivate event
if (bLastEventWasMounted && !mDisplayInfo.mIsMounted) {
bLastEventWasMounted = false;
if (gfxPrefs::VRAutoActivateEnabled()) {
vm->FireDOMVRDisplayUnmountedEvent(mDisplayInfo.mDisplayID);
}
}
}
void
VRDisplayClient::ZeroSensor()
{
VRManagerChild *vm = VRManagerChild::Get();
vm->SendResetSensor(mDisplayInfo.mDisplayID);
}
void
VRDisplayPresentation::CreateLayers()
{
if (mLayers.Length()) {
return;
}
for (dom::VRLayer& layer : mDOMLayers) {
dom::HTMLCanvasElement* canvasElement = layer.mSource;
if (!canvasElement) {
/// XXX In the future we will support WebVR in WebWorkers here
continue;
}
Rect leftBounds(0.0, 0.0, 0.5, 1.0);
if (layer.mLeftBounds.Length() == 4) {
leftBounds.x = layer.mLeftBounds[0];
leftBounds.y = layer.mLeftBounds[1];
leftBounds.width = layer.mLeftBounds[2];
leftBounds.height = layer.mLeftBounds[3];
} else if (layer.mLeftBounds.Length() != 0) {
/**
* We ignore layers with an incorrect number of values.
* In the future, VRDisplay.requestPresent may throw in
* this case. See https://github.com/w3c/webvr/issues/71
*/
continue;
}
Rect rightBounds(0.5, 0.0, 0.5, 1.0);
if (layer.mRightBounds.Length() == 4) {
rightBounds.x = layer.mRightBounds[0];
rightBounds.y = layer.mRightBounds[1];
rightBounds.width = layer.mRightBounds[2];
rightBounds.height = layer.mRightBounds[3];
} else if (layer.mRightBounds.Length() != 0) {
/**
* We ignore layers with an incorrect number of values.
* In the future, VRDisplay.requestPresent may throw in
* this case. See https://github.com/w3c/webvr/issues/71
*/
continue;
}
VRManagerChild *manager = VRManagerChild::Get();
if (!manager) {
NS_WARNING("VRManagerChild::Get returned null!");
continue;
}
nsCOMPtr<nsIEventTarget> target;
nsIDocument* doc;
doc = canvasElement->OwnerDoc();
if (doc) {
target = doc->EventTargetFor(TaskCategory::Other);
}
RefPtr<VRLayerChild> vrLayer =
static_cast<VRLayerChild*>(manager->CreateVRLayer(mDisplayClient->GetDisplayInfo().GetDisplayID(),
leftBounds, rightBounds, target));
if (!vrLayer) {
NS_WARNING("CreateVRLayer returned null!");
continue;
}
vrLayer->Initialize(canvasElement);
mLayers.AppendElement(vrLayer);
}
}
void
VRDisplayPresentation::CreateLayers()
{
VRManagerChild *manager = VRManagerChild::Get();
if (!manager) {
// This should not happen, but let's log it and avoid a crash in case
// of regression.
NS_WARNING("VRManagerChild::Get returned null!");
return;
}
unsigned int iLayer=0;
for (dom::VRLayer& layer : mDOMLayers) {
dom::HTMLCanvasElement* canvasElement = layer.mSource;
if (!canvasElement) {
/// XXX In the future we will support WebVR in WebWorkers here
continue;
}
Rect leftBounds(0.0, 0.0, 0.5, 1.0);
if (layer.mLeftBounds.Length() == 4) {
leftBounds.SetRect(layer.mLeftBounds[0],
layer.mLeftBounds[1],
layer.mLeftBounds[2],
layer.mLeftBounds[3]);
} else if (layer.mLeftBounds.Length() != 0) {
/**
* We ignore layers with an incorrect number of values.
* In the future, VRDisplay.requestPresent may throw in
* this case. See https://github.com/w3c/webvr/issues/71
*/
continue;
}
Rect rightBounds(0.5, 0.0, 0.5, 1.0);
if (layer.mRightBounds.Length() == 4) {
rightBounds.SetRect(layer.mRightBounds[0],
layer.mRightBounds[1],
layer.mRightBounds[2],
layer.mRightBounds[3]);
} else if (layer.mRightBounds.Length() != 0) {
/**
* We ignore layers with an incorrect number of values.
* In the future, VRDisplay.requestPresent may throw in
* this case. See https://github.com/w3c/webvr/issues/71
*/
continue;
}
nsCOMPtr<nsIEventTarget> target;
nsIDocument* doc;
doc = canvasElement->OwnerDoc();
if (doc) {
target = doc->EventTargetFor(TaskCategory::Other);
}
if (mLayers.Length() <= iLayer) {
// Not enough layers, let's add one
RefPtr<VRLayerChild> vrLayer =
static_cast<VRLayerChild*>(manager->CreateVRLayer(mDisplayClient->GetDisplayInfo().GetDisplayID(),
target, mGroup));
if (!vrLayer) {
NS_WARNING("CreateVRLayer returned null!");
continue;
}
vrLayer->Initialize(canvasElement, leftBounds, rightBounds);
mLayers.AppendElement(vrLayer);
} else {
// We already have a layer, let's update it
mLayers[iLayer]->Initialize(canvasElement, leftBounds, rightBounds);
}
iLayer++;
}
// Truncate any excess layers that weren't included in the updated list
mLayers.SetLength(iLayer);
}
