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https://github.com/mozilla/gecko-dev.git
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eb3becc0b0
- Added new chrome-only webidl methods to be used by browser UI and WebExtensions - Implemented bitmasked group visibility for VR sessions to enable switching between chrome and regular content presentations. - Implemented throttling mechanism to avoid runaway, unthrottled render loops for VR sessions that are hidden by group visibility bitmasks or due to lower level platform VR events, such as during the Oculus "Health and Safety Warning". - Simplified the PVRManager IPC protocol while extending it to support VR session groups and later WebVR content performance profiling API's. - Removed the last WebVR related sync IPC call. MozReview-Commit-ID: BMEIPyYeEbq --HG-- extra : rebase_source : 47d3682cad3d913504175b7d4c3e9d992236f097
134 lines
3.6 KiB
C++
134 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "VRDisplayPresentation.h"
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#include "mozilla/dom/DocGroup.h"
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#include "mozilla/Unused.h"
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#include "VRDisplayClient.h"
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#include "VRLayerChild.h"
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using namespace mozilla;
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using namespace mozilla::gfx;
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VRDisplayPresentation::VRDisplayPresentation(VRDisplayClient *aDisplayClient,
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const nsTArray<mozilla::dom::VRLayer>& aLayers,
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uint32_t aGroup)
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: mDisplayClient(aDisplayClient)
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, mDOMLayers(aLayers)
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, mGroup(aGroup)
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{
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CreateLayers();
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}
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uint32_t
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VRDisplayPresentation::GetGroup() const
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{
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return mGroup;
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}
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void
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VRDisplayPresentation::CreateLayers()
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{
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if (mLayers.Length()) {
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return;
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}
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for (dom::VRLayer& layer : mDOMLayers) {
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dom::HTMLCanvasElement* canvasElement = layer.mSource;
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if (!canvasElement) {
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/// XXX In the future we will support WebVR in WebWorkers here
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continue;
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}
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Rect leftBounds(0.0, 0.0, 0.5, 1.0);
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if (layer.mLeftBounds.Length() == 4) {
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leftBounds.x = layer.mLeftBounds[0];
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leftBounds.y = layer.mLeftBounds[1];
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leftBounds.width = layer.mLeftBounds[2];
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leftBounds.height = layer.mLeftBounds[3];
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} else if (layer.mLeftBounds.Length() != 0) {
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/**
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* We ignore layers with an incorrect number of values.
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* In the future, VRDisplay.requestPresent may throw in
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* this case. See https://github.com/w3c/webvr/issues/71
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*/
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continue;
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}
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Rect rightBounds(0.5, 0.0, 0.5, 1.0);
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if (layer.mRightBounds.Length() == 4) {
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rightBounds.x = layer.mRightBounds[0];
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rightBounds.y = layer.mRightBounds[1];
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rightBounds.width = layer.mRightBounds[2];
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rightBounds.height = layer.mRightBounds[3];
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} else if (layer.mRightBounds.Length() != 0) {
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/**
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* We ignore layers with an incorrect number of values.
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* In the future, VRDisplay.requestPresent may throw in
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* this case. See https://github.com/w3c/webvr/issues/71
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*/
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continue;
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}
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VRManagerChild *manager = VRManagerChild::Get();
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if (!manager) {
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NS_WARNING("VRManagerChild::Get returned null!");
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continue;
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}
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nsCOMPtr<nsIEventTarget> target;
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nsIDocument* doc;
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doc = canvasElement->OwnerDoc();
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if (doc) {
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target = doc->EventTargetFor(TaskCategory::Other);
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}
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RefPtr<VRLayerChild> vrLayer =
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static_cast<VRLayerChild*>(manager->CreateVRLayer(mDisplayClient->GetDisplayInfo().GetDisplayID(),
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leftBounds, rightBounds, target,
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mGroup));
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if (!vrLayer) {
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NS_WARNING("CreateVRLayer returned null!");
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continue;
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}
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vrLayer->Initialize(canvasElement);
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mLayers.AppendElement(vrLayer);
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}
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}
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void
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VRDisplayPresentation::DestroyLayers()
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{
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for (VRLayerChild* layer : mLayers) {
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if (layer->IsIPCOpen()) {
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Unused << layer->SendDestroy();
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}
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}
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mLayers.Clear();
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}
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void
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VRDisplayPresentation::GetDOMLayers(nsTArray<dom::VRLayer>& result)
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{
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result = mDOMLayers;
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}
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VRDisplayPresentation::~VRDisplayPresentation()
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{
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DestroyLayers();
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mDisplayClient->PresentationDestroyed();
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}
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void VRDisplayPresentation::SubmitFrame()
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{
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for (VRLayerChild *layer : mLayers) {
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layer->SubmitFrame();
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break; // Currently only one layer supported, submit only the first
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}
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}
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