| 1 |
- {"ast":null,"code":"import { WebXRFeatureName, WebXRFeaturesManager } from \"../webXRFeaturesManager.js\";\nimport { WebXRAbstractFeature } from \"./WebXRAbstractFeature.js\";\nimport { WebXRWebGLLayerWrapper } from \"../webXRWebGLLayer.js\";\nimport { WebXRProjectionLayerWrapper, defaultXRProjectionLayerInit } from \"./Layers/WebXRProjectionLayer.js\";\nimport { WebXRCompositionLayerRenderTargetTextureProvider, WebXRCompositionLayerWrapper } from \"./Layers/WebXRCompositionLayer.js\";\nimport { Color4 } from \"../../Maths/math.color.js\";\nconst defaultXRWebGLLayerInit = {};\n/**\n * Exposes the WebXR Layers API.\n */\nexport class WebXRLayers extends WebXRAbstractFeature {\n constructor(_xrSessionManager, _options = {}) {\n super(_xrSessionManager);\n this._options = _options;\n /**\n * Already-created layers\n */\n this._existingLayers = [];\n this._isMultiviewEnabled = false;\n this._projectionLayerInitialized = false;\n this._compositionLayerTextureMapping = new WeakMap();\n this._layerToRTTProviderMapping = new WeakMap();\n this.xrNativeFeatureName = \"layers\";\n }\n /**\n * Attach this feature.\n * Will usually be called by the features manager.\n *\n * @returns true if successful.\n */\n attach() {\n if (!super.attach()) {\n return false;\n }\n const engine = this._xrSessionManager.scene.getEngine();\n this._glContext = engine._gl;\n this._xrWebGLBinding = new XRWebGLBinding(this._xrSessionManager.session, this._glContext);\n this._existingLayers.length = 0;\n const projectionLayerInit = {\n ...defaultXRProjectionLayerInit,\n ...this._options.projectionLayerInit\n };\n this._isMultiviewEnabled = this._options.preferMultiviewOnInit && engine.getCaps().multiview;\n this.createProjectionLayer(projectionLayerInit /*, projectionLayerMultiview*/);\n this._projectionLayerInitialized = true;\n return true;\n }\n detach() {\n if (!super.detach()) {\n return false;\n }\n this._existingLayers.forEach(layer => {\n layer.dispose();\n });\n this._existingLayers.length = 0;\n this._projectionLayerInitialized = false;\n return true;\n }\n /**\n * Creates a new XRWebGLLayer.\n * @param params an object providing configuration options for the new XRWebGLLayer\n * @returns the XRWebGLLayer\n */\n createXRWebGLLayer(params = defaultXRWebGLLayerInit) {\n const layer = new XRWebGLLayer(this._xrSessionManager.session, this._glContext, params);\n return new WebXRWebGLLayerWrapper(layer);\n }\n _validateLayerInit(params, multiview = this._isMultiviewEnabled) {\n // check if we are in session\n if (!this._xrSessionManager.inXRSession) {\n throw new Error(\"Cannot create a layer outside of a WebXR session. Make sure the session has started before creating layers.\");\n }\n if (multiview && params.textureType !== \"texture-array\") {\n throw new Error(\"Projection layers can only be made multiview if they use texture arrays. Set the textureType parameter to 'texture-array'.\");\n }\n // TODO (rgerd): Support RTT's that are bound to sub-images in the texture array.\n if (!multiview && params.textureType === \"texture-array\") {\n throw new Error(\"We currently only support multiview rendering when the textureType parameter is set to 'texture-array'.\");\n }\n }\n _extendXRLayerInit(params, multiview = this._isMultiviewEnabled) {\n if (multiview) {\n params.textureType = \"texture-array\";\n }\n return params;\n }\n /**\n * Creates a new XRProjectionLayer.\n * @param params an object providing configuration options for the new XRProjectionLayer.\n * @param multiview whether the projection layer should render with multiview. Will be tru automatically if the extension initialized with multiview.\n * @returns the projection layer\n */\n createProjectionLayer(params = defaultXRProjectionLayerInit, multiview = this._isMultiviewEnabled) {\n this._extendXRLayerInit(params, multiview);\n this._validateLayerInit(params, multiview);\n const projLayer = this._xrWebGLBinding.createProjectionLayer(params);\n const layer = new WebXRProjectionLayerWrapper(projLayer, multiview, this._xrWebGLBinding);\n this.addXRSessionLayer(layer);\n return layer;\n }\n /**\n * Note about making it private - this function will be exposed once I decide on a proper API to support all of the XR layers' options\n * @param options an object providing configuration options for the new XRQuadLayer.\n * @param babylonTexture the texture to display in the layer\n * @returns the quad layer\n */\n _createQuadLayer(options = {\n params: {}\n }, babylonTexture) {\n this._extendXRLayerInit(options.params, false);\n const width = this._existingLayers[0].layer.textureWidth;\n const height = this._existingLayers[0].layer.textureHeight;\n const populatedParams = {\n space: this._xrSessionManager.referenceSpace,\n viewPixelWidth: width,\n viewPixelHeight: height,\n clearOnAccess: true,\n ...options.params\n };\n this._validateLayerInit(populatedParams, false);\n const quadLayer = this._xrWebGLBinding.createQuadLayer(populatedParams);\n quadLayer.width = this._isMultiviewEnabled ? 1 : 2;\n quadLayer.height = 1;\n // this wrapper is not really needed, but it's here for consistency\n const wrapper = new WebXRCompositionLayerWrapper(() => quadLayer.width, () => quadLayer.height, quadLayer, \"XRQuadLayer\", false, sessionManager => new WebXRCompositionLayerRenderTargetTextureProvider(sessionManager, this._xrWebGLBinding, wrapper));\n if (babylonTexture) {\n this._compositionLayerTextureMapping.set(quadLayer, babylonTexture);\n }\n const rtt = wrapper.createRenderTargetTextureProvider(this._xrSessionManager);\n this._layerToRTTProviderMapping.set(quadLayer, rtt);\n this.addXRSessionLayer(wrapper);\n return wrapper;\n }\n /**\n * @experimental\n * This will support full screen ADT when used with WebXR Layers. This API might change in the future.\n * Note that no interaction will be available with the ADT when using this method\n * @param texture the texture to display in the layer\n * @param options optional parameters for the layer\n * @returns a composition layer containing the texture\n */\n addFullscreenAdvancedDynamicTexture(texture, options = {\n distanceFromHeadset: 1.5\n }) {\n const wrapper = this._createQuadLayer({\n params: {\n space: this._xrSessionManager.viewerReferenceSpace,\n textureType: \"texture\",\n layout: \"mono\"\n }\n }, texture);\n const layer = wrapper.layer;\n const distance = Math.max(0.1, options.distanceFromHeadset);\n const pos = {\n x: 0,\n y: 0,\n z: -distance\n };\n const orient = {\n x: 0,\n y: 0,\n z: 0,\n w: 1\n };\n layer.transform = new XRRigidTransform(pos, orient);\n const rttProvider = this._layerToRTTProviderMapping.get(layer);\n if (!rttProvider) {\n throw new Error(\"Could not find the RTT provider for the layer\");\n }\n const babylonLayer = this._xrSessionManager.scene.layers.find(babylonLayer => {\n return babylonLayer.texture === texture;\n });\n if (!babylonLayer) {\n throw new Error(\"Could not find the babylon layer for the texture\");\n }\n rttProvider.onRenderTargetTextureCreatedObservable.add(data => {\n if (data.eye && data.eye === \"right\") {\n return;\n }\n data.texture.clearColor = new Color4(0, 0, 0, 0);\n babylonLayer.renderTargetTextures.push(data.texture);\n babylonLayer.renderOnlyInRenderTargetTextures = true;\n // for stereo (not for gui) it should be onBeforeCameraRenderObservable\n this._xrSessionManager.scene.onBeforeRenderObservable.add(() => {\n data.texture.render();\n });\n babylonLayer.renderTargetTextures.push(data.texture);\n babylonLayer.renderOnlyInRenderTargetTextures = true;\n // add it back when the session ends\n this._xrSessionManager.onXRSessionEnded.addOnce(() => {\n babylonLayer.renderTargetTextures.splice(babylonLayer.renderTargetTextures.indexOf(data.texture), 1);\n babylonLayer.renderOnlyInRenderTargetTextures = false;\n });\n });\n return wrapper;\n }\n /**\n * @experimental\n * This functions allows you to add a lens flare system to the XR scene.\n * Note - this will remove the lens flare system from the scene and add it to the XR scene.\n * This feature is experimental and might change in the future.\n * @param flareSystem the flare system to add\n * @returns a composition layer containing the flare system\n */\n _addLensFlareSystem(flareSystem) {\n const wrapper = this._createQuadLayer({\n params: {\n space: this._xrSessionManager.viewerReferenceSpace,\n textureType: \"texture\",\n layout: \"mono\"\n }\n });\n const layer = wrapper.layer;\n layer.width = 2;\n layer.height = 1;\n const distance = 10;\n const pos = {\n x: 0,\n y: 0,\n z: -distance\n };\n const orient = {\n x: 0,\n y: 0,\n z: 0,\n w: 1\n };\n layer.transform = new XRRigidTransform(pos, orient);\n // get the rtt wrapper\n const rttProvider = this._layerToRTTProviderMapping.get(layer);\n if (!rttProvider) {\n throw new Error(\"Could not find the RTT provider for the layer\");\n }\n // render the flare system to the rtt\n rttProvider.onRenderTargetTextureCreatedObservable.add(data => {\n data.texture.clearColor = new Color4(0, 0, 0, 0);\n data.texture.customRenderFunction = () => {\n flareSystem.render();\n };\n // add to the scene's render targets\n // this._xrSessionManager.scene.onBeforeCameraRenderObservable.add(() => {\n // data.texture.render();\n // });\n });\n // remove the lens flare system from the scene\n this._xrSessionManager.onXRSessionInit.add(() => {\n this._xrSessionManager.scene.lensFlareSystems.splice(this._xrSessionManager.scene.lensFlareSystems.indexOf(flareSystem), 1);\n });\n // add it back when the session ends\n this._xrSessionManager.onXRSessionEnded.add(() => {\n this._xrSessionManager.scene.lensFlareSystems.push(flareSystem);\n });\n return wrapper;\n }\n /**\n * Add a new layer to the already-existing list of layers\n * @param wrappedLayer the new layer to add to the existing ones\n */\n addXRSessionLayer(wrappedLayer) {\n this._existingLayers.push(wrappedLayer);\n this.setXRSessionLayers(this._existingLayers);\n }\n /**\n * Sets the layers to be used by the XR session.\n * Note that you must call this function with any layers you wish to render to\n * since it adds them to the XR session's render state\n * (replacing any layers that were added in a previous call to setXRSessionLayers or updateRenderState).\n * This method also sets up the session manager's render target texture provider\n * as the first layer in the array, which feeds the WebXR camera(s) attached to the session.\n * @param wrappedLayers An array of WebXRLayerWrapper, usually returned from the WebXRLayers createLayer functions.\n */\n setXRSessionLayers(wrappedLayers = this._existingLayers) {\n // this._existingLayers = wrappedLayers;\n const renderStateInit = {\n ...this._xrSessionManager.session.renderState\n };\n // Clear out the layer-related fields.\n renderStateInit.baseLayer = undefined;\n renderStateInit.layers = wrappedLayers.map(wrappedLayer => wrappedLayer.layer);\n this._xrSessionManager.updateRenderState(renderStateInit);\n if (!this._projectionLayerInitialized) {\n this._xrSessionManager._setBaseLayerWrapper(wrappedLayers.length > 0 ? wrappedLayers.at(0) : null);\n }\n }\n isCompatible() {\n // TODO (rgerd): Add native support.\n return !this._xrSessionManager.isNative && typeof XRWebGLBinding !== \"undefined\" && !!XRWebGLBinding.prototype.createProjectionLayer;\n }\n /**\n * Dispose this feature and all of the resources attached.\n */\n dispose() {\n super.dispose();\n }\n _onXRFrame(_xrFrame) {\n // Replace once the mapped internal texture of each available composition layer, apart from the last one, which is the projection layer that needs an RTT\n const layers = this._existingLayers;\n for (let i = 0; i < layers.length; ++i) {\n const layer = layers[i];\n if (layer.layerType !== \"XRProjectionLayer\") {\n // get the rtt provider\n const rttProvider = this._layerToRTTProviderMapping.get(layer.layer);\n if (!rttProvider) {\n continue;\n }\n if (rttProvider.layerWrapper.isMultiview) {\n // get the views, if we are in multiview\n const pose = _xrFrame.getViewerPose(this._xrSessionManager.referenceSpace);\n if (pose) {\n const views = pose.views;\n for (let j = 0; j < views.length; ++j) {\n const view = views[j];\n rttProvider.getRenderTargetTextureForView(view);\n }\n }\n } else {\n rttProvider.getRenderTargetTextureForView();\n }\n }\n }\n }\n}\n/**\n * The module's name\n */\nWebXRLayers.Name = WebXRFeatureName.LAYERS;\n/**\n * The (Babylon) version of this module.\n * This is an integer representing the implementation version.\n * This number does not correspond to the WebXR specs version\n */\nWebXRLayers.Version = 1;\n//register the plugin\nWebXRFeaturesManager.AddWebXRFeature(WebXRLayers.Name, (xrSessionManager, options) => {\n return () => new WebXRLayers(xrSessionManager, options);\n}, WebXRLayers.Version, false);","map":{"version":3,"names":["WebXRFeatureName","WebXRFeaturesManager","WebXRAbstractFeature","WebXRWebGLLayerWrapper","WebXRProjectionLayerWrapper","defaultXRProjectionLayerInit","WebXRCompositionLayerRenderTargetTextureProvider","WebXRCompositionLayerWrapper","Color4","defaultXRWebGLLayerInit","WebXRLayers","constructor","_xrSessionManager","_options","_existingLayers","_isMultiviewEnabled","_projectionLayerInitialized","_compositionLayerTextureMapping","WeakMap","_layerToRTTProviderMapping","xrNativeFeatureName","attach","engine","scene","getEngine","_glContext","_gl","_xrWebGLBinding","XRWebGLBinding","session","length","projectionLayerInit","preferMultiviewOnInit","getCaps","multiview","createProjectionLayer","detach","forEach","layer","dispose","createXRWebGLLayer","params","XRWebGLLayer","_validateLayerInit","inXRSession","Error","textureType","_extendXRLayerInit","projLayer","addXRSessionLayer","_createQuadLayer","options","babylonTexture","width","textureWidth","height","textureHeight","populatedParams","space","referenceSpace","viewPixelWidth","viewPixelHeight","clearOnAccess","quadLayer","createQuadLayer","wrapper","sessionManager","set","rtt","createRenderTargetTextureProvider","addFullscreenAdvancedDynamicTexture","texture","distanceFromHeadset","viewerReferenceSpace","layout","distance","Math","max","pos","x","y","z","orient","w","transform","XRRigidTransform","rttProvider","get","babylonLayer","layers","find","onRenderTargetTextureCreatedObservable","add","data","eye","clearColor","renderTargetTextures","push","renderOnlyInRenderTargetTextures","onBeforeRenderObservable","render","onXRSessionEnded","addOnce","splice","indexOf","_addLensFlareSystem","flareSystem","customRenderFunction","onXRSessionInit","lensFlareSystems","wrappedLayer","setXRSessionLayers","wrappedLayers","renderStateInit","renderState","baseLayer","undefined","map","updateRenderState","_setBaseLayerWrapper","at","isCompatible","isNative","prototype","_onXRFrame","_xrFrame","i","layerType","layerWrapper","isMultiview","pose","getViewerPose","views","j","view","getRenderTargetTextureForView","Name","LAYERS","Version","AddWebXRFeature","xrSessionManager"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/XR/features/WebXRLayers.js"],"sourcesContent":["import { WebXRFeatureName, WebXRFeaturesManager } from \"../webXRFeaturesManager.js\";\nimport { WebXRAbstractFeature } from \"./WebXRAbstractFeature.js\";\nimport { WebXRWebGLLayerWrapper } from \"../webXRWebGLLayer.js\";\nimport { WebXRProjectionLayerWrapper, defaultXRProjectionLayerInit } from \"./Layers/WebXRProjectionLayer.js\";\nimport { WebXRCompositionLayerRenderTargetTextureProvider, WebXRCompositionLayerWrapper } from \"./Layers/WebXRCompositionLayer.js\";\nimport { Color4 } from \"../../Maths/math.color.js\";\nconst defaultXRWebGLLayerInit = {};\n/**\n * Exposes the WebXR Layers API.\n */\nexport class WebXRLayers extends WebXRAbstractFeature {\n constructor(_xrSessionManager, _options = {}) {\n super(_xrSessionManager);\n this._options = _options;\n /**\n * Already-created layers\n */\n this._existingLayers = [];\n this._isMultiviewEnabled = false;\n this._projectionLayerInitialized = false;\n this._compositionLayerTextureMapping = new WeakMap();\n this._layerToRTTProviderMapping = new WeakMap();\n this.xrNativeFeatureName = \"layers\";\n }\n /**\n * Attach this feature.\n * Will usually be called by the features manager.\n *\n * @returns true if successful.\n */\n attach() {\n if (!super.attach()) {\n return false;\n }\n const engine = this._xrSessionManager.scene.getEngine();\n this._glContext = engine._gl;\n this._xrWebGLBinding = new XRWebGLBinding(this._xrSessionManager.session, this._glContext);\n this._existingLayers.length = 0;\n const projectionLayerInit = { ...defaultXRProjectionLayerInit, ...this._options.projectionLayerInit };\n this._isMultiviewEnabled = this._options.preferMultiviewOnInit && engine.getCaps().multiview;\n this.createProjectionLayer(projectionLayerInit /*, projectionLayerMultiview*/);\n this._projectionLayerInitialized = true;\n return true;\n }\n detach() {\n if (!super.detach()) {\n return false;\n }\n this._existingLayers.forEach((layer) => {\n layer.dispose();\n });\n this._existingLayers.length = 0;\n this._projectionLayerInitialized = false;\n return true;\n }\n /**\n * Creates a new XRWebGLLayer.\n * @param params an object providing configuration options for the new XRWebGLLayer\n * @returns the XRWebGLLayer\n */\n createXRWebGLLayer(params = defaultXRWebGLLayerInit) {\n const layer = new XRWebGLLayer(this._xrSessionManager.session, this._glContext, params);\n return new WebXRWebGLLayerWrapper(layer);\n }\n _validateLayerInit(params, multiview = this._isMultiviewEnabled) {\n // check if we are in session\n if (!this._xrSessionManager.inXRSession) {\n throw new Error(\"Cannot create a layer outside of a WebXR session. Make sure the session has started before creating layers.\");\n }\n if (multiview && params.textureType !== \"texture-array\") {\n throw new Error(\"Projection layers can only be made multiview if they use texture arrays. Set the textureType parameter to 'texture-array'.\");\n }\n // TODO (rgerd): Support RTT's that are bound to sub-images in the texture array.\n if (!multiview && params.textureType === \"texture-array\") {\n throw new Error(\"We currently only support multiview rendering when the textureType parameter is set to 'texture-array'.\");\n }\n }\n _extendXRLayerInit(params, multiview = this._isMultiviewEnabled) {\n if (multiview) {\n params.textureType = \"texture-array\";\n }\n return params;\n }\n /**\n * Creates a new XRProjectionLayer.\n * @param params an object providing configuration options for the new XRProjectionLayer.\n * @param multiview whether the projection layer should render with multiview. Will be tru automatically if the extension initialized with multiview.\n * @returns the projection layer\n */\n createProjectionLayer(params = defaultXRProjectionLayerInit, multiview = this._isMultiviewEnabled) {\n this._extendXRLayerInit(params, multiview);\n this._validateLayerInit(params, multiview);\n const projLayer = this._xrWebGLBinding.createProjectionLayer(params);\n const layer = new WebXRProjectionLayerWrapper(projLayer, multiview, this._xrWebGLBinding);\n this.addXRSessionLayer(layer);\n return layer;\n }\n /**\n * Note about making it private - this function will be exposed once I decide on a proper API to support all of the XR layers' options\n * @param options an object providing configuration options for the new XRQuadLayer.\n * @param babylonTexture the texture to display in the layer\n * @returns the quad layer\n */\n _createQuadLayer(options = { params: {} }, babylonTexture) {\n this._extendXRLayerInit(options.params, false);\n const width = this._existingLayers[0].layer.textureWidth;\n const height = this._existingLayers[0].layer.textureHeight;\n const populatedParams = {\n space: this._xrSessionManager.referenceSpace,\n viewPixelWidth: width,\n viewPixelHeight: height,\n clearOnAccess: true,\n ...options.params,\n };\n this._validateLayerInit(populatedParams, false);\n const quadLayer = this._xrWebGLBinding.createQuadLayer(populatedParams);\n quadLayer.width = this._isMultiviewEnabled ? 1 : 2;\n quadLayer.height = 1;\n // this wrapper is not really needed, but it's here for consistency\n const wrapper = new WebXRCompositionLayerWrapper(() => quadLayer.width, () => quadLayer.height, quadLayer, \"XRQuadLayer\", false, (sessionManager) => new WebXRCompositionLayerRenderTargetTextureProvider(sessionManager, this._xrWebGLBinding, wrapper));\n if (babylonTexture) {\n this._compositionLayerTextureMapping.set(quadLayer, babylonTexture);\n }\n const rtt = wrapper.createRenderTargetTextureProvider(this._xrSessionManager);\n this._layerToRTTProviderMapping.set(quadLayer, rtt);\n this.addXRSessionLayer(wrapper);\n return wrapper;\n }\n /**\n * @experimental\n * This will support full screen ADT when used with WebXR Layers. This API might change in the future.\n * Note that no interaction will be available with the ADT when using this method\n * @param texture the texture to display in the layer\n * @param options optional parameters for the layer\n * @returns a composition layer containing the texture\n */\n addFullscreenAdvancedDynamicTexture(texture, options = { distanceFromHeadset: 1.5 }) {\n const wrapper = this._createQuadLayer({\n params: {\n space: this._xrSessionManager.viewerReferenceSpace,\n textureType: \"texture\",\n layout: \"mono\",\n },\n }, texture);\n const layer = wrapper.layer;\n const distance = Math.max(0.1, options.distanceFromHeadset);\n const pos = { x: 0, y: 0, z: -distance };\n const orient = { x: 0, y: 0, z: 0, w: 1 };\n layer.transform = new XRRigidTransform(pos, orient);\n const rttProvider = this._layerToRTTProviderMapping.get(layer);\n if (!rttProvider) {\n throw new Error(\"Could not find the RTT provider for the layer\");\n }\n const babylonLayer = this._xrSessionManager.scene.layers.find((babylonLayer) => {\n return babylonLayer.texture === texture;\n });\n if (!babylonLayer) {\n throw new Error(\"Could not find the babylon layer for the texture\");\n }\n rttProvider.onRenderTargetTextureCreatedObservable.add((data) => {\n if (data.eye && data.eye === \"right\") {\n return;\n }\n data.texture.clearColor = new Color4(0, 0, 0, 0);\n babylonLayer.renderTargetTextures.push(data.texture);\n babylonLayer.renderOnlyInRenderTargetTextures = true;\n // for stereo (not for gui) it should be onBeforeCameraRenderObservable\n this._xrSessionManager.scene.onBeforeRenderObservable.add(() => {\n data.texture.render();\n });\n babylonLayer.renderTargetTextures.push(data.texture);\n babylonLayer.renderOnlyInRenderTargetTextures = true;\n // add it back when the session ends\n this._xrSessionManager.onXRSessionEnded.addOnce(() => {\n babylonLayer.renderTargetTextures.splice(babylonLayer.renderTargetTextures.indexOf(data.texture), 1);\n babylonLayer.renderOnlyInRenderTargetTextures = false;\n });\n });\n return wrapper;\n }\n /**\n * @experimental\n * This functions allows you to add a lens flare system to the XR scene.\n * Note - this will remove the lens flare system from the scene and add it to the XR scene.\n * This feature is experimental and might change in the future.\n * @param flareSystem the flare system to add\n * @returns a composition layer containing the flare system\n */\n _addLensFlareSystem(flareSystem) {\n const wrapper = this._createQuadLayer({\n params: {\n space: this._xrSessionManager.viewerReferenceSpace,\n textureType: \"texture\",\n layout: \"mono\",\n },\n });\n const layer = wrapper.layer;\n layer.width = 2;\n layer.height = 1;\n const distance = 10;\n const pos = { x: 0, y: 0, z: -distance };\n const orient = { x: 0, y: 0, z: 0, w: 1 };\n layer.transform = new XRRigidTransform(pos, orient);\n // get the rtt wrapper\n const rttProvider = this._layerToRTTProviderMapping.get(layer);\n if (!rttProvider) {\n throw new Error(\"Could not find the RTT provider for the layer\");\n }\n // render the flare system to the rtt\n rttProvider.onRenderTargetTextureCreatedObservable.add((data) => {\n data.texture.clearColor = new Color4(0, 0, 0, 0);\n data.texture.customRenderFunction = () => {\n flareSystem.render();\n };\n // add to the scene's render targets\n // this._xrSessionManager.scene.onBeforeCameraRenderObservable.add(() => {\n // data.texture.render();\n // });\n });\n // remove the lens flare system from the scene\n this._xrSessionManager.onXRSessionInit.add(() => {\n this._xrSessionManager.scene.lensFlareSystems.splice(this._xrSessionManager.scene.lensFlareSystems.indexOf(flareSystem), 1);\n });\n // add it back when the session ends\n this._xrSessionManager.onXRSessionEnded.add(() => {\n this._xrSessionManager.scene.lensFlareSystems.push(flareSystem);\n });\n return wrapper;\n }\n /**\n * Add a new layer to the already-existing list of layers\n * @param wrappedLayer the new layer to add to the existing ones\n */\n addXRSessionLayer(wrappedLayer) {\n this._existingLayers.push(wrappedLayer);\n this.setXRSessionLayers(this._existingLayers);\n }\n /**\n * Sets the layers to be used by the XR session.\n * Note that you must call this function with any layers you wish to render to\n * since it adds them to the XR session's render state\n * (replacing any layers that were added in a previous call to setXRSessionLayers or updateRenderState).\n * This method also sets up the session manager's render target texture provider\n * as the first layer in the array, which feeds the WebXR camera(s) attached to the session.\n * @param wrappedLayers An array of WebXRLayerWrapper, usually returned from the WebXRLayers createLayer functions.\n */\n setXRSessionLayers(wrappedLayers = this._existingLayers) {\n // this._existingLayers = wrappedLayers;\n const renderStateInit = { ...this._xrSessionManager.session.renderState };\n // Clear out the layer-related fields.\n renderStateInit.baseLayer = undefined;\n renderStateInit.layers = wrappedLayers.map((wrappedLayer) => wrappedLayer.layer);\n this._xrSessionManager.updateRenderState(renderStateInit);\n if (!this._projectionLayerInitialized) {\n this._xrSessionManager._setBaseLayerWrapper(wrappedLayers.length > 0 ? wrappedLayers.at(0) : null);\n }\n }\n isCompatible() {\n // TODO (rgerd): Add native support.\n return !this._xrSessionManager.isNative && typeof XRWebGLBinding !== \"undefined\" && !!XRWebGLBinding.prototype.createProjectionLayer;\n }\n /**\n * Dispose this feature and all of the resources attached.\n */\n dispose() {\n super.dispose();\n }\n _onXRFrame(_xrFrame) {\n // Replace once the mapped internal texture of each available composition layer, apart from the last one, which is the projection layer that needs an RTT\n const layers = this._existingLayers;\n for (let i = 0; i < layers.length; ++i) {\n const layer = layers[i];\n if (layer.layerType !== \"XRProjectionLayer\") {\n // get the rtt provider\n const rttProvider = this._layerToRTTProviderMapping.get(layer.layer);\n if (!rttProvider) {\n continue;\n }\n if (rttProvider.layerWrapper.isMultiview) {\n // get the views, if we are in multiview\n const pose = _xrFrame.getViewerPose(this._xrSessionManager.referenceSpace);\n if (pose) {\n const views = pose.views;\n for (let j = 0; j < views.length; ++j) {\n const view = views[j];\n rttProvider.getRenderTargetTextureForView(view);\n }\n }\n }\n else {\n rttProvider.getRenderTargetTextureForView();\n }\n }\n }\n }\n}\n/**\n * The module's name\n */\nWebXRLayers.Name = WebXRFeatureName.LAYERS;\n/**\n * The (Babylon) version of this module.\n * This is an integer representing the implementation version.\n * This number does not correspond to the WebXR specs version\n */\nWebXRLayers.Version = 1;\n//register the plugin\nWebXRFeaturesManager.AddWebXRFeature(WebXRLayers.Name, (xrSessionManager, options) => {\n return () => new WebXRLayers(xrSessionManager, options);\n}, WebXRLayers.Version, 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