| /* |
| * Copyright (C) 2020 Igalia S.L. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "WebXRSystem.h" |
| |
| #if ENABLE(WEBXR) |
| |
| #include "Chrome.h" |
| #include "ChromeClient.h" |
| #include "DOMWindow.h" |
| #include "Document.h" |
| #include "FeaturePolicy.h" |
| #include "IDLTypes.h" |
| #include "JSWebXRSession.h" |
| #include "JSXRReferenceSpaceType.h" |
| #include "Navigator.h" |
| #include "Page.h" |
| #include "PlatformXR.h" |
| #include "RequestAnimationFrameCallback.h" |
| #include "RuntimeEnabledFeatures.h" |
| #include "SecurityOrigin.h" |
| #include "UserGestureIndicator.h" |
| #include "WebXRSession.h" |
| #include "XRReferenceSpaceType.h" |
| #include "XRSessionInit.h" |
| #include <JavaScriptCore/JSGlobalObject.h> |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/Scope.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(WebXRSystem); |
| |
| Ref<WebXRSystem> WebXRSystem::create(Navigator& navigator) |
| { |
| return adoptRef(*new WebXRSystem(navigator)); |
| } |
| |
| WebXRSystem::WebXRSystem(Navigator& navigator) |
| : ActiveDOMObject(navigator.scriptExecutionContext()) |
| , m_navigator(navigator) |
| , m_defaultInlineDevice(*navigator.scriptExecutionContext()) |
| { |
| m_inlineXRDevice = m_defaultInlineDevice; |
| suspendIfNeeded(); |
| } |
| |
| WebXRSystem::~WebXRSystem() = default; |
| |
| Navigator* WebXRSystem::navigator() |
| { |
| return m_navigator.get(); |
| } |
| |
| // https://immersive-web.github.io/webxr/#ensures-an-immersive-xr-device-is-selected |
| void WebXRSystem::ensureImmersiveXRDeviceIsSelected(CompletionHandler<void()>&& callback) |
| { |
| // Don't ask platform code for XR devices, we're using simulated ones. |
| if (UNLIKELY(m_testingDevices)) { |
| callback(); |
| return; |
| } |
| |
| if (m_activeImmersiveDevice) { |
| callback(); |
| return; |
| } |
| |
| // https://immersive-web.github.io/webxr/#enumerate-immersive-xr-devices |
| auto document = downcast<Document>(scriptExecutionContext()); |
| if (!document || !document->page()) { |
| callback(); |
| return; |
| } |
| |
| bool isFirstXRDevicesEnumeration = !m_immersiveXRDevicesHaveBeenEnumerated; |
| document->page()->chrome().client().enumerateImmersiveXRDevices([this, protectedThis = Ref { *this }, isFirstXRDevicesEnumeration, callback = WTFMove(callback)](auto& immersiveXRDevices) mutable { |
| m_immersiveXRDevicesHaveBeenEnumerated = true; |
| |
| auto callbackOnExit = makeScopeExit([&]() { |
| callOnMainThread(WTFMove(callback)); |
| }); |
| |
| // https://immersive-web.github.io/webxr/#select-an-immersive-xr-device |
| auto* oldDevice = m_activeImmersiveDevice.get(); |
| if (immersiveXRDevices.isEmpty()) { |
| m_activeImmersiveDevice = nullptr; |
| return; |
| } |
| if (immersiveXRDevices.size() == 1) { |
| m_activeImmersiveDevice = immersiveXRDevices.first().get(); |
| return; |
| } |
| |
| if (m_activeImmersiveSession && oldDevice && immersiveXRDevices.findMatching([&](auto& entry) { return entry.ptr() == oldDevice; }) != notFound) |
| ASSERT(m_activeImmersiveDevice.get() == oldDevice); |
| else { |
| // FIXME: implement a better UA selection mechanism if required. |
| m_activeImmersiveDevice = immersiveXRDevices.first().get(); |
| } |
| |
| if (isFirstXRDevicesEnumeration || m_activeImmersiveDevice.get() == oldDevice) { |
| return; |
| } |
| |
| // FIXME: 7. Shut down any active XRSessions. |
| // FIXME: 8. Set the XR compatible boolean of all WebGLRenderingContextBase instances to false. |
| // FIXME: 9. Queue a task to fire an event named devicechange on the context object. |
| }); |
| } |
| |
| void WebXRSystem::obtainCurrentDevice(XRSessionMode mode, const JSFeatureList& requiredFeatures, const JSFeatureList& optionalFeatures, CompletionHandler<void(PlatformXR::Device*)>&& callback) |
| { |
| if (mode == XRSessionMode::ImmersiveAr || mode == XRSessionMode::ImmersiveVr) { |
| ensureImmersiveXRDeviceIsSelected([this, callback = WTFMove(callback)]() mutable { |
| callback(m_activeImmersiveDevice.get()); |
| }); |
| return; |
| } |
| if (!requiredFeatures.isEmpty() || !optionalFeatures.isEmpty()) { |
| callback(m_inlineXRDevice.get()); |
| return; |
| } |
| |
| callback(&m_defaultInlineDevice); |
| } |
| |
| |
| // https://immersive-web.github.io/webxr/#dom-xrsystem-issessionsupported |
| void WebXRSystem::isSessionSupported(XRSessionMode mode, IsSessionSupportedPromise&& promise) |
| { |
| // 1. Let promise be a new Promise. |
| // 2. If mode is "inline", resolve promise with true and return it. |
| if (mode == XRSessionMode::Inline) { |
| promise.resolve(true); |
| return; |
| } |
| |
| // 3. If the requesting document's origin is not allowed to use the "xr-spatial-tracking" feature policy, |
| // reject promise with a "SecurityError" DOMException and return it. |
| auto document = downcast<Document>(scriptExecutionContext()); |
| if (!isFeaturePolicyAllowedByDocumentAndAllOwners(FeaturePolicy::Type::XRSpatialTracking, *document, LogFeaturePolicyFailure::Yes)) { |
| promise.reject(Exception { SecurityError }); |
| return; |
| } |
| |
| // 4. Run the following steps in parallel: |
| // 4.1 Ensure an immersive XR device is selected. |
| ensureImmersiveXRDeviceIsSelected([this, promise = WTFMove(promise), mode]() mutable { |
| // 4.2 If the immersive XR device is null, resolve promise with false and abort these steps. |
| if (!m_activeImmersiveDevice) { |
| promise.resolve(false); |
| return; |
| } |
| |
| // 4.3 If the immersive XR device's list of supported modes does not contain mode, resolve promise with false and abort these steps. |
| if (!m_activeImmersiveDevice->supports(mode)) { |
| promise.resolve(false); |
| return; |
| } |
| |
| // 4.4 Resolve promise with true. |
| promise.resolve(true); |
| }); |
| } |
| |
| // https://immersive-web.github.io/webxr/#immersive-session-request-is-allowed |
| bool WebXRSystem::immersiveSessionRequestIsAllowedForGlobalObject(DOMWindow& globalObject, Document& document) const |
| { |
| // 1. If the request was not made while the global object has transient |
| // activation or when launching a web application, return false |
| // TODO: add a check for "not launching a web application". |
| if (!globalObject.hasTransientActivation()) |
| return false; |
| |
| // 2. If the requesting document is not considered trustworthy, return false. |
| // https://immersive-web.github.io/webxr/#trustworthy. |
| if (&document != globalObject.document()) |
| return false; |
| |
| // https://immersive-web.github.io/webxr/#active-and-focused |
| if (!document.hasFocus() || !document.securityOrigin().isSameOriginAs(globalObject.document()->securityOrigin())) |
| return false; |
| |
| // 3. If user intent to begin an immersive session is not well understood, |
| // either via explicit consent or implicit consent, return false |
| if (!UserGestureIndicator::processingUserGesture()) |
| return false; |
| |
| return true; |
| } |
| |
| // https://immersive-web.github.io/webxr/#inline-session-request-is-allowed |
| bool WebXRSystem::inlineSessionRequestIsAllowedForGlobalObject(DOMWindow& globalObject, Document& document, const XRSessionInit& init) const |
| { |
| auto isEmptyOrViewer = [&document](const JSFeatureList& features) { |
| if (features.isEmpty()) |
| return true; |
| if (features.size() == 1) { |
| auto feature = parseEnumeration<XRReferenceSpaceType>(*document.globalObject(), features.first()); |
| if (feature == XRReferenceSpaceType::Viewer) |
| return true; |
| } |
| return false; |
| }; |
| |
| // 1. If the session request contained any required features or optional features (besides 'viewer') and the request was not made |
| // while the global object has transient activation or when launching a web application, return false. |
| bool sessionRequestContainedAnyFeature = !isEmptyOrViewer(init.optionalFeatures) || !isEmptyOrViewer(init.requiredFeatures); |
| if (sessionRequestContainedAnyFeature && !globalObject.hasTransientActivation() /* TODO: || !launching a web app */) |
| return false; |
| |
| // 2. If the requesting document is not responsible, return false. |
| if (&document != globalObject.document()) |
| return false; |
| |
| return true; |
| } |
| |
| |
| struct WebXRSystem::ResolvedRequestedFeatures { |
| FeatureList granted; |
| FeatureList consentRequired; |
| FeatureList consentOptional; |
| FeatureList requested; |
| }; |
| |
| #define RETURN_FALSE_OR_CONTINUE(mustReturn) { \ |
| if (mustReturn) {\ |
| return false; \ |
| } \ |
| continue; \ |
| } |
| |
| // https://immersive-web.github.io/webxr/#resolve-the-requested-features |
| std::optional<WebXRSystem::ResolvedRequestedFeatures> WebXRSystem::resolveRequestedFeatures(XRSessionMode mode, const XRSessionInit& init, PlatformXR::Device* device, JSC::JSGlobalObject& globalObject) const |
| { |
| // 1. Let consentRequired be an empty list of DOMString. |
| // 2. Let consentOptional be an empty list of DOMString. |
| ResolvedRequestedFeatures resolvedFeatures; |
| |
| // 3. Let device be the result of obtaining the current device for mode, requiredFeatures, and optionalFeatures. |
| // 4. Let granted be a list of DOMString initialized to device's list of enabled features for mode. |
| // 5. If device is null or device's list of supported modes does not contain mode, run the following steps: |
| // 5.1 Return the tuple (consentRequired, consentOptional, granted) |
| if (!device || !device->supports(mode)) |
| return resolvedFeatures; |
| |
| resolvedFeatures.granted = device->enabledFeatures(mode); |
| |
| // 6. Add every feature descriptor in the default features table associated |
| // with mode to the indicated feature list if it is not already present. |
| // https://immersive-web.github.io/webxr/#default-features |
| auto requiredFeaturesWithDefaultFeatures = init.requiredFeatures; |
| requiredFeaturesWithDefaultFeatures.append(convertEnumerationToJS(globalObject, XRReferenceSpaceType::Viewer)); |
| if (mode == XRSessionMode::ImmersiveAr || mode == XRSessionMode::ImmersiveVr) |
| requiredFeaturesWithDefaultFeatures.append(convertEnumerationToJS(globalObject, XRReferenceSpaceType::Local)); |
| |
| // 7. For each feature in requiredFeatures|optionalFeatures perform the following steps: |
| // 8. For each feature in optionalFeatures perform the following steps: |
| // We're merging both loops in a single lambda. The only difference is that a failure on any required features |
| // implies cancelling the whole process while failures in optional features are just skipped. |
| enum class ParsingMode { Strict, Loose }; |
| auto parseFeatures = [&device, &globalObject, mode, &resolvedFeatures] (const JSFeatureList& sessionFeatures, ParsingMode parsingMode) -> bool { |
| bool returnOnFailure = parsingMode == ParsingMode::Strict; |
| for (const auto& sessionFeature : sessionFeatures) { |
| // 1. If the feature is null, continue to the next entry. |
| if (sessionFeature.isNull()) |
| continue; |
| |
| // FIXME: This is only testing for XRReferenceSpaceType features. It |
| // needs to handle optional features like "hand-tracking". |
| |
| // 2. If feature is not a valid feature descriptor, perform the following steps |
| // 2.1. Let s be the result of calling ? ToString(feature). |
| // 2.2. If s is not a valid feature descriptor or is undefined, (return null|continue to next entry). |
| // 2.3. Set feature to s. |
| auto feature = parseEnumeration<XRReferenceSpaceType>(globalObject, sessionFeature); |
| if (!feature) |
| RETURN_FALSE_OR_CONTINUE(returnOnFailure); |
| |
| // 3. If feature is already in granted, continue to the next entry. |
| if (resolvedFeatures.granted.contains(feature.value())) { |
| resolvedFeatures.requested.append(feature.value()); |
| continue; |
| } |
| |
| // 4. If the requesting document's origin is not allowed to use any feature policy required by feature |
| // as indicated by the feature requirements table, (return null|continue to next entry). |
| |
| // 5. If session's XR device is not capable of supporting the functionality described by feature or the |
| // user agent has otherwise determined to reject the feature, (return null|continue to next entry). |
| if (!device->supportedFeatures(mode).contains(feature.value())) |
| RETURN_FALSE_OR_CONTINUE(returnOnFailure); |
| |
| // 6. If the functionality described by feature requires explicit consent, append it to (consentRequired|consentOptional). |
| // 7. Else append feature to granted. |
| resolvedFeatures.granted.append(feature.value()); |
| |
| // https://immersive-web.github.io/webxr/#requested-features |
| // The combined list of feature descriptors given by the requiredFeatures and optionalFeatures are collectively considered the requested features for an XRSession. |
| resolvedFeatures.requested.append(feature.value()); |
| } |
| return true; |
| }; |
| |
| if (!parseFeatures(requiredFeaturesWithDefaultFeatures, ParsingMode::Strict)) |
| return std::nullopt; |
| |
| parseFeatures(init.optionalFeatures, ParsingMode::Loose); |
| return resolvedFeatures; |
| } |
| |
| // https://immersive-web.github.io/webxr/#request-the-xr-permission |
| std::optional<WebXRSystem::FeatureList> WebXRSystem::resolveFeaturePermissions(XRSessionMode mode, const XRSessionInit& init, PlatformXR::Device* device, JSC::JSGlobalObject& globalObject) const |
| { |
| // 1. Set status's granted to an empty FrozenArray. |
| // 2. Let requiredFeatures be descriptor's requiredFeatures. |
| // 3. Let optionalFeatures be descriptor's optionalFeatures. |
| // 4. Let device be the result of obtaining the current device for mode, requiredFeatures, and optionalFeatures. |
| |
| // 5. Let result be the result of resolving the requested features given requiredFeatures,optionalFeatures, and mode. |
| auto resolvedFeatures = resolveRequestedFeatures(mode, init, device, globalObject); |
| |
| // 6. If result is null, run the following steps: |
| // 6.1. Set status's state to "denied". |
| // 6.2. Abort these steps. |
| if (!resolvedFeatures) |
| return std::nullopt; |
| |
| // 7. Let (consentRequired, consentOptional, granted) be the fields of result. |
| // 8. The user agent MAY at this point ask the user's permission for the calling algorithm to use any of the features |
| // in consentRequired and consentOptional. The results of these prompts should be included when determining if there |
| // is a clear signal of user intent for enabling these features. |
| // 9. For each feature in consentRequired perform the following steps: |
| // 9.1. The user agent MAY at this point ask the user's permission for the calling algorithm to use feature. The results |
| // of these prompts should be included when determining if there is a clear signal of user intent to enable feature. |
| // 9.2. If a clear signal of user intent to enable feature has not been determined, set status's state to "denied" and |
| // abort these steps. |
| // 9.3. If feature is not in granted, append feature to granted. |
| // 10. For each feature in consentOptional perform the following steps: |
| // 10.1. The user agent MAY at this point ask the user's permission for the calling algorithm to use feature. The results |
| // of these prompts should be included when determining if there is a clear signal of user intent to enable feature. |
| // 10.2. If a clear signal of user intent to enable feature has not been determined, continue to the next entry. |
| // 10.3. If feature is not in granted, append feature to granted. |
| // 11. Set status's granted to granted. |
| // 12. Set device's list of enabled features for mode to granted. |
| // 13. Set status's state to "granted". |
| device->setEnabledFeatures(mode, resolvedFeatures->granted); |
| |
| return resolvedFeatures->requested; |
| } |
| |
| |
| // https://immersive-web.github.io/webxr/#dom-xrsystem-requestsession |
| void WebXRSystem::requestSession(Document& document, XRSessionMode mode, const XRSessionInit& init, RequestSessionPromise&& promise) |
| { |
| // 1. Let promise be a new Promise. |
| // 2. Let immersive be true if mode is an immersive session mode, and false otherwise. |
| // 3. Let global object be the relevant Global object for the XRSystem on which this method was invoked. |
| bool immersive = mode == XRSessionMode::ImmersiveAr || mode == XRSessionMode::ImmersiveVr; |
| auto* globalObject = document.domWindow(); |
| if (!globalObject) { |
| promise.reject(Exception { InvalidAccessError}); |
| return; |
| } |
| |
| // 4. Check whether the session request is allowed as follows: |
| if (immersive) { |
| if (!immersiveSessionRequestIsAllowedForGlobalObject(*globalObject, document)) { |
| promise.reject(Exception { SecurityError }); |
| return; |
| } |
| if (m_pendingImmersiveSession || m_activeImmersiveSession) { |
| promise.reject(Exception { InvalidStateError }); |
| return; |
| } |
| m_pendingImmersiveSession = true; |
| } else if (!inlineSessionRequestIsAllowedForGlobalObject(*globalObject, document, init)) { |
| promise.reject(Exception { SecurityError }); |
| return; |
| } |
| |
| // 5. Run the following steps in parallel: |
| // 5.1 Let requiredFeatures be options' requiredFeatures. |
| // 5.2 Let optionalFeatures be options' optionalFeatures. |
| // 5.3 Set device to the result of obtaining the current device for mode, requiredFeatures, and optionalFeatures. |
| // 5.4 Queue a task to perform the following steps: |
| obtainCurrentDevice(mode, init.requiredFeatures, init.optionalFeatures, [this, protectedDocument = Ref { document }, immersive, init, mode, promise = WTFMove(promise)](auto* device) mutable { |
| auto rejectPromiseWithNotSupportedError = makeScopeExit([&]() { |
| promise.reject(Exception { NotSupportedError }); |
| m_pendingImmersiveSession = false; |
| }); |
| |
| // 5.4.1 If device is null or device's list of supported modes does not contain mode, run the following steps: |
| // - Reject promise with a "NotSupportedError" DOMException. |
| // - If immersive is true, set pending immersive session to false. |
| // - Abort these steps. |
| if (!device || !device->supports(mode)) |
| return; |
| |
| auto* globalObject = protectedDocument->globalObject(); |
| if (!globalObject) |
| return; |
| |
| // WebKit does not currently support the Permissions API. https://w3c.github.io/permissions/ |
| // However we do implement here the permission request algorithm without the |
| // Permissions API bits as it handles, among others, the session features parsing. We also |
| // do it here before creating the session as there is no need to do it on advance. |
| // FIXME: we just perform basic checks without asking any permission to the user so far. Maybe we should implement |
| // a mechanism similar to what others do involving passing a message to the UI process. |
| |
| // 5.4.4 Let descriptor be an XRPermissionDescriptor initialized with session, requiredFeatures, and optionalFeatures |
| // 5.4.5 Let status be an XRPermissionStatus, initially null |
| // 5.4.6 Request the xr permission with descriptor and status. |
| // 5.4.7 If status' state is "denied" run the following steps: (same as above in 5.4.1) |
| auto requestedFeatures = resolveFeaturePermissions(mode, init, device, *globalObject); |
| if (!requestedFeatures) |
| return; |
| |
| // 5.4.2 Let session be a new XRSession object. |
| // 5.4.3 Initialize the session with session, mode, and device. |
| auto session = WebXRSession::create(protectedDocument.get(), *this, mode, *device, WTFMove(*requestedFeatures)); |
| |
| // 5.4.8 Potentially set the active immersive session as follows: |
| if (immersive) { |
| m_activeImmersiveSession = session.copyRef(); |
| m_pendingImmersiveSession = false; |
| } else |
| m_inlineSessions.add(session.copyRef()); |
| |
| // 5.4.9 Resolve promise with session. |
| promise.resolve(WTFMove(session)); |
| rejectPromiseWithNotSupportedError.release(); |
| |
| // 5.4.10 is handled in WebXRSession::sessionDidInitializeInputSources. |
| }); |
| } |
| |
| const char* WebXRSystem::activeDOMObjectName() const |
| { |
| return "XRSystem"; |
| } |
| |
| void WebXRSystem::stop() |
| { |
| } |
| |
| void WebXRSystem::registerSimulatedXRDeviceForTesting(PlatformXR::Device& device) |
| { |
| auto scriptExecutionContext = this->scriptExecutionContext(); |
| if (!scriptExecutionContext || !scriptExecutionContext->settingsValues().webXREnabled) |
| return; |
| |
| m_testingDevices++; |
| if (device.supports(XRSessionMode::ImmersiveVr) || device.supports(XRSessionMode::ImmersiveAr)) { |
| m_immersiveDevices.add(device); |
| m_activeImmersiveDevice = device; |
| } |
| if (device.supports(XRSessionMode::Inline)) |
| m_inlineXRDevice = device; |
| } |
| |
| void WebXRSystem::unregisterSimulatedXRDeviceForTesting(PlatformXR::Device& device) |
| { |
| auto scriptExecutionContext = this->scriptExecutionContext(); |
| if (!scriptExecutionContext || !scriptExecutionContext->settingsValues().webXREnabled) |
| return; |
| |
| ASSERT(m_testingDevices); |
| bool removed = m_immersiveDevices.remove(device); |
| ASSERT_UNUSED(removed, removed || m_inlineXRDevice == &device); |
| if (m_activeImmersiveDevice == &device) |
| m_activeImmersiveDevice = nullptr; |
| if (m_inlineXRDevice == &device) |
| m_inlineXRDevice = m_defaultInlineDevice; |
| m_testingDevices--; |
| } |
| |
| void WebXRSystem::sessionEnded(WebXRSession& session) |
| { |
| if (m_activeImmersiveSession == &session) |
| m_activeImmersiveSession = nullptr; |
| |
| m_inlineSessions.remove(session); |
| } |
| |
| class InlineRequestAnimationFrameCallback final: public RequestAnimationFrameCallback { |
| public: |
| static Ref<InlineRequestAnimationFrameCallback> create(ScriptExecutionContext& scriptExecutionContext, Function<void()>&& callback) |
| { |
| return adoptRef(*new InlineRequestAnimationFrameCallback(scriptExecutionContext, WTFMove(callback))); |
| } |
| private: |
| InlineRequestAnimationFrameCallback(ScriptExecutionContext& scriptExecutionContext, Function<void()>&& callback) |
| : RequestAnimationFrameCallback(&scriptExecutionContext), m_callback(WTFMove(callback)) |
| { |
| } |
| |
| CallbackResult<void> handleEvent(double) final |
| { |
| m_callback(); |
| return { }; |
| } |
| |
| Function<void()> m_callback; |
| }; |
| |
| |
| WebXRSystem::DummyInlineDevice::DummyInlineDevice(ScriptExecutionContext& scriptExecutionContext) |
| : ContextDestructionObserver(&scriptExecutionContext) |
| { |
| setSupportedFeatures(XRSessionMode::Inline, { XRReferenceSpaceType::Viewer }); |
| } |
| |
| void WebXRSystem::DummyInlineDevice::requestFrame(PlatformXR::Device::RequestFrameCallback&& callback) |
| { |
| if (!scriptExecutionContext()) |
| return; |
| // Inline XR sessions rely on document.requestAnimationFrame to perform the render loop. |
| auto document = downcast<Document>(scriptExecutionContext()); |
| if (!document) |
| return; |
| |
| auto raf = InlineRequestAnimationFrameCallback::create(*m_scriptExecutionContext, [callback = WTFMove(callback)]() mutable { |
| PlatformXR::Device::FrameData data; |
| data.isTrackingValid = true; |
| data.isPositionValid = true; |
| data.shouldRender = true; |
| data.views.append({ }); |
| callback(WTFMove(data)); |
| }); |
| |
| document->requestAnimationFrame(raf); |
| } |
| |
| Vector<PlatformXR::Device::ViewData> WebXRSystem::DummyInlineDevice::views(XRSessionMode) const |
| { |
| return { { .active = true, .eye = PlatformXR::Eye::None } }; |
| } |
| |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(WEBXR) |
