| 1 |
- {"ast":null,"code":"import { Scene } from \"../../scene.js\";\nimport { SceneComponentConstants } from \"../../sceneComponent.js\";\nimport { FluidRenderingObjectParticleSystem } from \"./fluidRenderingObjectParticleSystem.js\";\nimport { FluidRenderingTargetRenderer } from \"./fluidRenderingTargetRenderer.js\";\nimport { FluidRenderingObjectCustomParticles } from \"./fluidRenderingObjectCustomParticles.js\";\nimport { FluidRenderingDepthTextureCopy } from \"./fluidRenderingDepthTextureCopy.js\";\nObject.defineProperty(Scene.prototype, \"fluidRenderer\", {\n get: function () {\n return this._fluidRenderer;\n },\n set: function (value) {\n this._fluidRenderer = value;\n },\n enumerable: true,\n configurable: true\n});\nScene.prototype.enableFluidRenderer = function () {\n if (this._fluidRenderer) {\n return this._fluidRenderer;\n }\n this._fluidRenderer = new FluidRenderer(this);\n return this._fluidRenderer;\n};\nScene.prototype.disableFluidRenderer = function () {\n var _this$_fluidRenderer;\n (_this$_fluidRenderer = this._fluidRenderer) === null || _this$_fluidRenderer === void 0 || _this$_fluidRenderer.dispose();\n this._fluidRenderer = null;\n};\nfunction IsParticleSystemObject(obj) {\n return !!obj.particleSystem;\n}\nfunction IsCustomParticlesObject(obj) {\n return !!obj.addBuffers;\n}\n/**\n * Defines the fluid renderer scene component responsible to render objects as fluids\n */\nexport class FluidRendererSceneComponent {\n /**\n * Creates a new instance of the component for the given scene\n * @param scene Defines the scene to register the component in\n */\n constructor(scene) {\n /**\n * The component name helpful to identify the component in the list of scene components.\n */\n this.name = SceneComponentConstants.NAME_FLUIDRENDERER;\n this.scene = scene;\n }\n /**\n * Registers the component in a given scene\n */\n register() {\n this.scene._gatherActiveCameraRenderTargetsStage.registerStep(SceneComponentConstants.STEP_GATHERACTIVECAMERARENDERTARGETS_FLUIDRENDERER, this, this._gatherActiveCameraRenderTargets);\n this.scene._afterCameraDrawStage.registerStep(SceneComponentConstants.STEP_AFTERCAMERADRAW_FLUIDRENDERER, this, this._afterCameraDraw);\n }\n _gatherActiveCameraRenderTargets(_renderTargets) {\n var _this$scene$fluidRend;\n (_this$scene$fluidRend = this.scene.fluidRenderer) === null || _this$scene$fluidRend === void 0 || _this$scene$fluidRend._prepareRendering();\n }\n _afterCameraDraw(camera) {\n var _this$scene$fluidRend2;\n (_this$scene$fluidRend2 = this.scene.fluidRenderer) === null || _this$scene$fluidRend2 === void 0 || _this$scene$fluidRend2._render(camera);\n }\n /**\n * Rebuilds the elements related to this component in case of\n * context lost for instance.\n */\n rebuild() {\n const fluidRenderer = this.scene.fluidRenderer;\n if (!fluidRenderer) {\n return;\n }\n const buffers = new Set();\n for (let i = 0; i < fluidRenderer.renderObjects.length; ++i) {\n const obj = fluidRenderer.renderObjects[i].object;\n if (IsCustomParticlesObject(obj)) {\n const vbuffers = obj.vertexBuffers;\n for (const name in vbuffers) {\n buffers.add(vbuffers[name].getWrapperBuffer());\n }\n }\n }\n buffers.forEach(buffer => {\n buffer._rebuild();\n });\n }\n /**\n * Disposes the component and the associated resources\n */\n dispose() {\n this.scene.disableFluidRenderer();\n }\n}\n/**\n * Class responsible for fluid rendering.\n * It is implementing the method described in https://developer.download.nvidia.com/presentations/2010/gdc/Direct3D_Effects.pdf\n */\nexport class FluidRenderer {\n /** @internal */\n static _SceneComponentInitialization(scene) {\n let component = scene._getComponent(SceneComponentConstants.NAME_FLUIDRENDERER);\n if (!component) {\n component = new FluidRendererSceneComponent(scene);\n scene._addComponent(component);\n }\n }\n /**\n * Gets the shader language used in this renderer\n */\n get shaderLanguage() {\n return this._shaderLanguage;\n }\n /**\n * Initializes the class\n * @param scene Scene in which the objects are part of\n */\n constructor(scene) {\n /** Shader language used by the renderer */\n this._shaderLanguage = 0 /* ShaderLanguage.GLSL */;\n this._scene = scene;\n this._engine = scene.getEngine();\n this._onEngineResizeObserver = null;\n this.renderObjects = [];\n this.targetRenderers = [];\n this._cameras = new Map();\n FluidRenderer._SceneComponentInitialization(this._scene);\n this._onEngineResizeObserver = this._engine.onResizeObservable.add(() => {\n this._initialize();\n });\n const engine = this._engine;\n if (engine.isWebGPU) {\n this._shaderLanguage = 1 /* ShaderLanguage.WGSL */;\n }\n }\n /**\n * Reinitializes the class\n * Can be used if you change the object priority (FluidRenderingObject.priority), to make sure the objects are rendered in the right order\n */\n recreate() {\n this._sortRenderingObjects();\n this._initialize();\n }\n /**\n * Gets the render object corresponding to a particle system (null if the particle system is not rendered as a fluid)\n * @param ps The particle system\n * @returns the render object corresponding to this particle system if any, otherwise null\n */\n getRenderObjectFromParticleSystem(ps) {\n const index = this._getParticleSystemIndex(ps);\n return index !== -1 ? this.renderObjects[index] : null;\n }\n /**\n * Adds a particle system to the fluid renderer.\n * @param ps particle system\n * @param generateDiffuseTexture True if you want to generate a diffuse texture from the particle system and use it as part of the fluid rendering (default: false)\n * @param targetRenderer The target renderer used to display the particle system as a fluid. If not provided, the method will create a new one\n * @param camera The camera used by the target renderer (if the target renderer is created by the method)\n * @returns the render object corresponding to the particle system\n */\n addParticleSystem(ps, generateDiffuseTexture, targetRenderer, camera) {\n const object = new FluidRenderingObjectParticleSystem(this._scene, ps, this._shaderLanguage);\n object.onParticleSizeChanged.add(() => this._setParticleSizeForRenderTargets());\n if (!targetRenderer) {\n targetRenderer = new FluidRenderingTargetRenderer(this._scene, camera, this._shaderLanguage);\n this.targetRenderers.push(targetRenderer);\n }\n if (!targetRenderer._onUseVelocityChanged.hasObservers()) {\n targetRenderer._onUseVelocityChanged.add(() => this._setUseVelocityForRenderObject());\n }\n if (generateDiffuseTexture !== undefined) {\n targetRenderer.generateDiffuseTexture = generateDiffuseTexture;\n }\n const renderObject = {\n object,\n targetRenderer\n };\n this.renderObjects.push(renderObject);\n this._sortRenderingObjects();\n this._setParticleSizeForRenderTargets();\n return renderObject;\n }\n /**\n * Adds a custom particle set to the fluid renderer.\n * @param buffers The list of buffers (should contain at least a \"position\" buffer!)\n * @param numParticles Number of particles in each buffer\n * @param generateDiffuseTexture True if you want to generate a diffuse texture from buffers and use it as part of the fluid rendering (default: false). For the texture to be generated correctly, you need a \"color\" buffer in the set!\n * @param targetRenderer The target renderer used to display the particle system as a fluid. If not provided, the method will create a new one\n * @param camera The camera used by the target renderer (if the target renderer is created by the method)\n * @returns the render object corresponding to the custom particle set\n */\n addCustomParticles(buffers, numParticles, generateDiffuseTexture, targetRenderer, camera) {\n const object = new FluidRenderingObjectCustomParticles(this._scene, buffers, numParticles, this._shaderLanguage);\n object.onParticleSizeChanged.add(() => this._setParticleSizeForRenderTargets());\n if (!targetRenderer) {\n targetRenderer = new FluidRenderingTargetRenderer(this._scene, camera, this._shaderLanguage);\n this.targetRenderers.push(targetRenderer);\n }\n if (!targetRenderer._onUseVelocityChanged.hasObservers()) {\n targetRenderer._onUseVelocityChanged.add(() => this._setUseVelocityForRenderObject());\n }\n if (generateDiffuseTexture !== undefined) {\n targetRenderer.generateDiffuseTexture = generateDiffuseTexture;\n }\n const renderObject = {\n object,\n targetRenderer\n };\n this.renderObjects.push(renderObject);\n this._sortRenderingObjects();\n this._setParticleSizeForRenderTargets();\n return renderObject;\n }\n /**\n * Removes a render object from the fluid renderer\n * @param renderObject the render object to remove\n * @param removeUnusedTargetRenderer True to remove/dispose of the target renderer if it's not used anymore (default: true)\n * @returns True if the render object has been found and released, else false\n */\n removeRenderObject(renderObject, removeUnusedTargetRenderer = true) {\n const index = this.renderObjects.indexOf(renderObject);\n if (index === -1) {\n return false;\n }\n renderObject.object.dispose();\n this.renderObjects.splice(index, 1);\n if (removeUnusedTargetRenderer && this._removeUnusedTargetRenderers()) {\n this._initialize();\n } else {\n this._setParticleSizeForRenderTargets();\n }\n return true;\n }\n _sortRenderingObjects() {\n this.renderObjects.sort((a, b) => {\n return a.object.priority < b.object.priority ? -1 : a.object.priority > b.object.priority ? 1 : 0;\n });\n }\n _removeUnusedTargetRenderers() {\n const indexes = {};\n for (let i = 0; i < this.renderObjects.length; ++i) {\n const targetRenderer = this.renderObjects[i].targetRenderer;\n indexes[this.targetRenderers.indexOf(targetRenderer)] = true;\n }\n let removed = false;\n const newList = [];\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n if (!indexes[i]) {\n this.targetRenderers[i].dispose();\n removed = true;\n } else {\n newList.push(this.targetRenderers[i]);\n }\n }\n if (removed) {\n this.targetRenderers.length = 0;\n this.targetRenderers.push(...newList);\n }\n return removed;\n }\n _getParticleSystemIndex(ps) {\n for (let i = 0; i < this.renderObjects.length; ++i) {\n const obj = this.renderObjects[i].object;\n if (IsParticleSystemObject(obj) && obj.particleSystem === ps) {\n return i;\n }\n }\n return -1;\n }\n _initialize() {\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n this.targetRenderers[i].dispose();\n }\n const cameras = new Map();\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n const targetRenderer = this.targetRenderers[i];\n targetRenderer._initialize();\n if (targetRenderer.camera && targetRenderer._renderPostProcess) {\n let list = cameras.get(targetRenderer.camera);\n if (!list) {\n list = [[], {}];\n cameras.set(targetRenderer.camera, list);\n }\n list[0].push(targetRenderer);\n targetRenderer.camera.attachPostProcess(targetRenderer._renderPostProcess, i);\n }\n }\n let iterator = cameras.keys();\n for (let key = iterator.next(); key.done !== true; key = iterator.next()) {\n const camera = key.value;\n const list = cameras.get(camera);\n const firstPostProcess = camera._getFirstPostProcess();\n if (!firstPostProcess) {\n continue;\n }\n const [targetRenderers, copyDepthTextures] = list;\n firstPostProcess.onSizeChangedObservable.add(() => {\n if (!firstPostProcess.inputTexture.depthStencilTexture) {\n firstPostProcess.inputTexture.createDepthStencilTexture(0, true, this._engine.isStencilEnable, targetRenderers[0].samples, this._engine.isStencilEnable ? 13 : 14, `PostProcessRTTDepthStencil-${firstPostProcess.name}`);\n }\n for (const targetRenderer of targetRenderers) {\n var _targetRenderer$_thic;\n const thicknessRT = (_targetRenderer$_thic = targetRenderer._thicknessRenderTarget) === null || _targetRenderer$_thic === void 0 ? void 0 : _targetRenderer$_thic.renderTarget;\n const thicknessTexture = thicknessRT === null || thicknessRT === void 0 ? void 0 : thicknessRT.texture;\n if (thicknessRT && thicknessTexture) {\n const key = thicknessTexture.width + \"_\" + thicknessTexture.height;\n let copyDepthTexture = copyDepthTextures[key];\n if (!copyDepthTexture) {\n copyDepthTexture = copyDepthTextures[key] = new FluidRenderingDepthTextureCopy(this._engine, thicknessTexture.width, thicknessTexture.height);\n }\n copyDepthTexture.depthRTWrapper.shareDepth(thicknessRT);\n }\n }\n });\n }\n // Dispose the CopyDepthTexture instances that we don't need anymore\n iterator = this._cameras.keys();\n for (let key = iterator.next(); key.done !== true; key = iterator.next()) {\n const camera = key.value;\n const list = this._cameras.get(camera);\n const copyDepthTextures = list[1];\n const list2 = cameras.get(camera);\n if (!list2) {\n for (const key in copyDepthTextures) {\n copyDepthTextures[key].dispose();\n }\n } else {\n for (const key in copyDepthTextures) {\n if (!list2[1][key]) {\n copyDepthTextures[key].dispose();\n }\n }\n }\n }\n this._cameras.clear();\n this._cameras = cameras;\n this._setParticleSizeForRenderTargets();\n }\n _setParticleSizeForRenderTargets() {\n const particleSizes = new Map();\n for (let i = 0; i < this.renderObjects.length; ++i) {\n const renderingObject = this.renderObjects[i];\n let curSize = particleSizes.get(renderingObject.targetRenderer);\n if (curSize === undefined) {\n curSize = 0;\n }\n particleSizes.set(renderingObject.targetRenderer, Math.max(curSize, renderingObject.object.particleSize));\n }\n particleSizes.forEach((particleSize, targetRenderer) => {\n if (targetRenderer._depthRenderTarget) {\n targetRenderer._depthRenderTarget.particleSize = particleSize;\n }\n });\n }\n _setUseVelocityForRenderObject() {\n for (const renderingObject of this.renderObjects) {\n renderingObject.object.useVelocity = renderingObject.targetRenderer.useVelocity;\n }\n }\n /** @internal */\n _prepareRendering() {\n for (const renderer of this.targetRenderers) {\n if (renderer.needInitialization) {\n this._initialize();\n return;\n }\n }\n }\n /** @internal */\n _render(forCamera) {\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n if (!forCamera || this.targetRenderers[i].camera === forCamera) {\n this.targetRenderers[i]._clearTargets();\n }\n }\n const iterator = this._cameras.keys();\n for (let key = iterator.next(); key.done !== true; key = iterator.next()) {\n var _firstPostProcess$inp;\n const camera = key.value;\n const list = this._cameras.get(camera);\n if (forCamera && camera !== forCamera) {\n continue;\n }\n const firstPostProcess = camera._getFirstPostProcess();\n if (!firstPostProcess) {\n continue;\n }\n const sourceCopyDepth = (_firstPostProcess$inp = firstPostProcess.inputTexture) === null || _firstPostProcess$inp === void 0 ? void 0 : _firstPostProcess$inp.depthStencilTexture;\n if (sourceCopyDepth) {\n const [targetRenderers, copyDepthTextures] = list;\n for (const targetRenderer of targetRenderers) {\n targetRenderer._bgDepthTexture = sourceCopyDepth;\n }\n for (const key in copyDepthTextures) {\n copyDepthTextures[key].copy(sourceCopyDepth);\n }\n }\n }\n for (let i = 0; i < this.renderObjects.length; ++i) {\n const renderingObject = this.renderObjects[i];\n if (!forCamera || renderingObject.targetRenderer.camera === forCamera) {\n renderingObject.targetRenderer._render(renderingObject.object);\n }\n }\n }\n /**\n * Disposes of all the ressources used by the class\n */\n dispose() {\n this._engine.onResizeObservable.remove(this._onEngineResizeObserver);\n this._onEngineResizeObserver = null;\n for (let i = 0; i < this.renderObjects.length; ++i) {\n this.renderObjects[i].object.dispose();\n }\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n this.targetRenderers[i].dispose();\n }\n this._cameras.forEach(list => {\n const copyDepthTextures = list[1];\n for (const key in copyDepthTextures) {\n copyDepthTextures[key].dispose();\n }\n });\n this.renderObjects = [];\n this.targetRenderers = [];\n this._cameras.clear();\n }\n}","map":{"version":3,"names":["Scene","SceneComponentConstants","FluidRenderingObjectParticleSystem","FluidRenderingTargetRenderer","FluidRenderingObjectCustomParticles","FluidRenderingDepthTextureCopy","Object","defineProperty","prototype","get","_fluidRenderer","set","value","enumerable","configurable","enableFluidRenderer","FluidRenderer","disableFluidRenderer","_this$_fluidRenderer","dispose","IsParticleSystemObject","obj","particleSystem","IsCustomParticlesObject","addBuffers","FluidRendererSceneComponent","constructor","scene","name","NAME_FLUIDRENDERER","register","_gatherActiveCameraRenderTargetsStage","registerStep","STEP_GATHERACTIVECAMERARENDERTARGETS_FLUIDRENDERER","_gatherActiveCameraRenderTargets","_afterCameraDrawStage","STEP_AFTERCAMERADRAW_FLUIDRENDERER","_afterCameraDraw","_renderTargets","_this$scene$fluidRend","fluidRenderer","_prepareRendering","camera","_this$scene$fluidRend2","_render","rebuild","buffers","Set","i","renderObjects","length","object","vbuffers","vertexBuffers","add","getWrapperBuffer","forEach","buffer","_rebuild","_SceneComponentInitialization","component","_getComponent","_addComponent","shaderLanguage","_shaderLanguage","_scene","_engine","getEngine","_onEngineResizeObserver","targetRenderers","_cameras","Map","onResizeObservable","_initialize","engine","isWebGPU","recreate","_sortRenderingObjects","getRenderObjectFromParticleSystem","ps","index","_getParticleSystemIndex","addParticleSystem","generateDiffuseTexture","targetRenderer","onParticleSizeChanged","_setParticleSizeForRenderTargets","push","_onUseVelocityChanged","hasObservers","_setUseVelocityForRenderObject","undefined","renderObject","addCustomParticles","numParticles","removeRenderObject","removeUnusedTargetRenderer","indexOf","splice","_removeUnusedTargetRenderers","sort","a","b","priority","indexes","removed","newList","cameras","_renderPostProcess","list","attachPostProcess","iterator","keys","key","next","done","firstPostProcess","_getFirstPostProcess","copyDepthTextures","onSizeChangedObservable","inputTexture","depthStencilTexture","createDepthStencilTexture","isStencilEnable","samples","_targetRenderer$_thic","thicknessRT","_thicknessRenderTarget","renderTarget","thicknessTexture","texture","width","height","copyDepthTexture","depthRTWrapper","shareDepth","list2","clear","particleSizes","renderingObject","curSize","Math","max","particleSize","_depthRenderTarget","useVelocity","renderer","needInitialization","forCamera","_clearTargets","_firstPostProcess$inp","sourceCopyDepth","_bgDepthTexture","copy","remove"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Rendering/fluidRenderer/fluidRenderer.js"],"sourcesContent":["import { Scene } from \"../../scene.js\";\nimport { SceneComponentConstants } from \"../../sceneComponent.js\";\n\nimport { FluidRenderingObjectParticleSystem } from \"./fluidRenderingObjectParticleSystem.js\";\nimport { FluidRenderingTargetRenderer } from \"./fluidRenderingTargetRenderer.js\";\nimport { FluidRenderingObjectCustomParticles } from \"./fluidRenderingObjectCustomParticles.js\";\nimport { FluidRenderingDepthTextureCopy } from \"./fluidRenderingDepthTextureCopy.js\";\nObject.defineProperty(Scene.prototype, \"fluidRenderer\", {\n get: function () {\n return this._fluidRenderer;\n },\n set: function (value) {\n this._fluidRenderer = value;\n },\n enumerable: true,\n configurable: true,\n});\nScene.prototype.enableFluidRenderer = function () {\n if (this._fluidRenderer) {\n return this._fluidRenderer;\n }\n this._fluidRenderer = new FluidRenderer(this);\n return this._fluidRenderer;\n};\nScene.prototype.disableFluidRenderer = function () {\n this._fluidRenderer?.dispose();\n this._fluidRenderer = null;\n};\nfunction IsParticleSystemObject(obj) {\n return !!obj.particleSystem;\n}\nfunction IsCustomParticlesObject(obj) {\n return !!obj.addBuffers;\n}\n/**\n * Defines the fluid renderer scene component responsible to render objects as fluids\n */\nexport class FluidRendererSceneComponent {\n /**\n * Creates a new instance of the component for the given scene\n * @param scene Defines the scene to register the component in\n */\n constructor(scene) {\n /**\n * The component name helpful to identify the component in the list of scene components.\n */\n this.name = SceneComponentConstants.NAME_FLUIDRENDERER;\n this.scene = scene;\n }\n /**\n * Registers the component in a given scene\n */\n register() {\n this.scene._gatherActiveCameraRenderTargetsStage.registerStep(SceneComponentConstants.STEP_GATHERACTIVECAMERARENDERTARGETS_FLUIDRENDERER, this, this._gatherActiveCameraRenderTargets);\n this.scene._afterCameraDrawStage.registerStep(SceneComponentConstants.STEP_AFTERCAMERADRAW_FLUIDRENDERER, this, this._afterCameraDraw);\n }\n _gatherActiveCameraRenderTargets(_renderTargets) {\n this.scene.fluidRenderer?._prepareRendering();\n }\n _afterCameraDraw(camera) {\n this.scene.fluidRenderer?._render(camera);\n }\n /**\n * Rebuilds the elements related to this component in case of\n * context lost for instance.\n */\n rebuild() {\n const fluidRenderer = this.scene.fluidRenderer;\n if (!fluidRenderer) {\n return;\n }\n const buffers = new Set();\n for (let i = 0; i < fluidRenderer.renderObjects.length; ++i) {\n const obj = fluidRenderer.renderObjects[i].object;\n if (IsCustomParticlesObject(obj)) {\n const vbuffers = obj.vertexBuffers;\n for (const name in vbuffers) {\n buffers.add(vbuffers[name].getWrapperBuffer());\n }\n }\n }\n buffers.forEach((buffer) => {\n buffer._rebuild();\n });\n }\n /**\n * Disposes the component and the associated resources\n */\n dispose() {\n this.scene.disableFluidRenderer();\n }\n}\n/**\n * Class responsible for fluid rendering.\n * It is implementing the method described in https://developer.download.nvidia.com/presentations/2010/gdc/Direct3D_Effects.pdf\n */\nexport class FluidRenderer {\n /** @internal */\n static _SceneComponentInitialization(scene) {\n let component = scene._getComponent(SceneComponentConstants.NAME_FLUIDRENDERER);\n if (!component) {\n component = new FluidRendererSceneComponent(scene);\n scene._addComponent(component);\n }\n }\n /**\n * Gets the shader language used in this renderer\n */\n get shaderLanguage() {\n return this._shaderLanguage;\n }\n /**\n * Initializes the class\n * @param scene Scene in which the objects are part of\n */\n constructor(scene) {\n /** Shader language used by the renderer */\n this._shaderLanguage = 0 /* ShaderLanguage.GLSL */;\n this._scene = scene;\n this._engine = scene.getEngine();\n this._onEngineResizeObserver = null;\n this.renderObjects = [];\n this.targetRenderers = [];\n this._cameras = new Map();\n FluidRenderer._SceneComponentInitialization(this._scene);\n this._onEngineResizeObserver = this._engine.onResizeObservable.add(() => {\n this._initialize();\n });\n const engine = this._engine;\n if (engine.isWebGPU) {\n this._shaderLanguage = 1 /* ShaderLanguage.WGSL */;\n }\n }\n /**\n * Reinitializes the class\n * Can be used if you change the object priority (FluidRenderingObject.priority), to make sure the objects are rendered in the right order\n */\n recreate() {\n this._sortRenderingObjects();\n this._initialize();\n }\n /**\n * Gets the render object corresponding to a particle system (null if the particle system is not rendered as a fluid)\n * @param ps The particle system\n * @returns the render object corresponding to this particle system if any, otherwise null\n */\n getRenderObjectFromParticleSystem(ps) {\n const index = this._getParticleSystemIndex(ps);\n return index !== -1 ? this.renderObjects[index] : null;\n }\n /**\n * Adds a particle system to the fluid renderer.\n * @param ps particle system\n * @param generateDiffuseTexture True if you want to generate a diffuse texture from the particle system and use it as part of the fluid rendering (default: false)\n * @param targetRenderer The target renderer used to display the particle system as a fluid. If not provided, the method will create a new one\n * @param camera The camera used by the target renderer (if the target renderer is created by the method)\n * @returns the render object corresponding to the particle system\n */\n addParticleSystem(ps, generateDiffuseTexture, targetRenderer, camera) {\n const object = new FluidRenderingObjectParticleSystem(this._scene, ps, this._shaderLanguage);\n object.onParticleSizeChanged.add(() => this._setParticleSizeForRenderTargets());\n if (!targetRenderer) {\n targetRenderer = new FluidRenderingTargetRenderer(this._scene, camera, this._shaderLanguage);\n this.targetRenderers.push(targetRenderer);\n }\n if (!targetRenderer._onUseVelocityChanged.hasObservers()) {\n targetRenderer._onUseVelocityChanged.add(() => this._setUseVelocityForRenderObject());\n }\n if (generateDiffuseTexture !== undefined) {\n targetRenderer.generateDiffuseTexture = generateDiffuseTexture;\n }\n const renderObject = { object, targetRenderer };\n this.renderObjects.push(renderObject);\n this._sortRenderingObjects();\n this._setParticleSizeForRenderTargets();\n return renderObject;\n }\n /**\n * Adds a custom particle set to the fluid renderer.\n * @param buffers The list of buffers (should contain at least a \"position\" buffer!)\n * @param numParticles Number of particles in each buffer\n * @param generateDiffuseTexture True if you want to generate a diffuse texture from buffers and use it as part of the fluid rendering (default: false). For the texture to be generated correctly, you need a \"color\" buffer in the set!\n * @param targetRenderer The target renderer used to display the particle system as a fluid. If not provided, the method will create a new one\n * @param camera The camera used by the target renderer (if the target renderer is created by the method)\n * @returns the render object corresponding to the custom particle set\n */\n addCustomParticles(buffers, numParticles, generateDiffuseTexture, targetRenderer, camera) {\n const object = new FluidRenderingObjectCustomParticles(this._scene, buffers, numParticles, this._shaderLanguage);\n object.onParticleSizeChanged.add(() => this._setParticleSizeForRenderTargets());\n if (!targetRenderer) {\n targetRenderer = new FluidRenderingTargetRenderer(this._scene, camera, this._shaderLanguage);\n this.targetRenderers.push(targetRenderer);\n }\n if (!targetRenderer._onUseVelocityChanged.hasObservers()) {\n targetRenderer._onUseVelocityChanged.add(() => this._setUseVelocityForRenderObject());\n }\n if (generateDiffuseTexture !== undefined) {\n targetRenderer.generateDiffuseTexture = generateDiffuseTexture;\n }\n const renderObject = { object, targetRenderer };\n this.renderObjects.push(renderObject);\n this._sortRenderingObjects();\n this._setParticleSizeForRenderTargets();\n return renderObject;\n }\n /**\n * Removes a render object from the fluid renderer\n * @param renderObject the render object to remove\n * @param removeUnusedTargetRenderer True to remove/dispose of the target renderer if it's not used anymore (default: true)\n * @returns True if the render object has been found and released, else false\n */\n removeRenderObject(renderObject, removeUnusedTargetRenderer = true) {\n const index = this.renderObjects.indexOf(renderObject);\n if (index === -1) {\n return false;\n }\n renderObject.object.dispose();\n this.renderObjects.splice(index, 1);\n if (removeUnusedTargetRenderer && this._removeUnusedTargetRenderers()) {\n this._initialize();\n }\n else {\n this._setParticleSizeForRenderTargets();\n }\n return true;\n }\n _sortRenderingObjects() {\n this.renderObjects.sort((a, b) => {\n return a.object.priority < b.object.priority ? -1 : a.object.priority > b.object.priority ? 1 : 0;\n });\n }\n _removeUnusedTargetRenderers() {\n const indexes = {};\n for (let i = 0; i < this.renderObjects.length; ++i) {\n const targetRenderer = this.renderObjects[i].targetRenderer;\n indexes[this.targetRenderers.indexOf(targetRenderer)] = true;\n }\n let removed = false;\n const newList = [];\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n if (!indexes[i]) {\n this.targetRenderers[i].dispose();\n removed = true;\n }\n else {\n newList.push(this.targetRenderers[i]);\n }\n }\n if (removed) {\n this.targetRenderers.length = 0;\n this.targetRenderers.push(...newList);\n }\n return removed;\n }\n _getParticleSystemIndex(ps) {\n for (let i = 0; i < this.renderObjects.length; ++i) {\n const obj = this.renderObjects[i].object;\n if (IsParticleSystemObject(obj) && obj.particleSystem === ps) {\n return i;\n }\n }\n return -1;\n }\n _initialize() {\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n this.targetRenderers[i].dispose();\n }\n const cameras = new Map();\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n const targetRenderer = this.targetRenderers[i];\n targetRenderer._initialize();\n if (targetRenderer.camera && targetRenderer._renderPostProcess) {\n let list = cameras.get(targetRenderer.camera);\n if (!list) {\n list = [[], {}];\n cameras.set(targetRenderer.camera, list);\n }\n list[0].push(targetRenderer);\n targetRenderer.camera.attachPostProcess(targetRenderer._renderPostProcess, i);\n }\n }\n let iterator = cameras.keys();\n for (let key = iterator.next(); key.done !== true; key = iterator.next()) {\n const camera = key.value;\n const list = cameras.get(camera);\n const firstPostProcess = camera._getFirstPostProcess();\n if (!firstPostProcess) {\n continue;\n }\n const [targetRenderers, copyDepthTextures] = list;\n firstPostProcess.onSizeChangedObservable.add(() => {\n if (!firstPostProcess.inputTexture.depthStencilTexture) {\n firstPostProcess.inputTexture.createDepthStencilTexture(0, true, this._engine.isStencilEnable, targetRenderers[0].samples, this._engine.isStencilEnable ? 13 : 14, `PostProcessRTTDepthStencil-${firstPostProcess.name}`);\n }\n for (const targetRenderer of targetRenderers) {\n const thicknessRT = targetRenderer._thicknessRenderTarget?.renderTarget;\n const thicknessTexture = thicknessRT?.texture;\n if (thicknessRT && thicknessTexture) {\n const key = thicknessTexture.width + \"_\" + thicknessTexture.height;\n let copyDepthTexture = copyDepthTextures[key];\n if (!copyDepthTexture) {\n copyDepthTexture = copyDepthTextures[key] = new FluidRenderingDepthTextureCopy(this._engine, thicknessTexture.width, thicknessTexture.height);\n }\n copyDepthTexture.depthRTWrapper.shareDepth(thicknessRT);\n }\n }\n });\n }\n // Dispose the CopyDepthTexture instances that we don't need anymore\n iterator = this._cameras.keys();\n for (let key = iterator.next(); key.done !== true; key = iterator.next()) {\n const camera = key.value;\n const list = this._cameras.get(camera);\n const copyDepthTextures = list[1];\n const list2 = cameras.get(camera);\n if (!list2) {\n for (const key in copyDepthTextures) {\n copyDepthTextures[key].dispose();\n }\n }\n else {\n for (const key in copyDepthTextures) {\n if (!list2[1][key]) {\n copyDepthTextures[key].dispose();\n }\n }\n }\n }\n this._cameras.clear();\n this._cameras = cameras;\n this._setParticleSizeForRenderTargets();\n }\n _setParticleSizeForRenderTargets() {\n const particleSizes = new Map();\n for (let i = 0; i < this.renderObjects.length; ++i) {\n const renderingObject = this.renderObjects[i];\n let curSize = particleSizes.get(renderingObject.targetRenderer);\n if (curSize === undefined) {\n curSize = 0;\n }\n particleSizes.set(renderingObject.targetRenderer, Math.max(curSize, renderingObject.object.particleSize));\n }\n particleSizes.forEach((particleSize, targetRenderer) => {\n if (targetRenderer._depthRenderTarget) {\n targetRenderer._depthRenderTarget.particleSize = particleSize;\n }\n });\n }\n _setUseVelocityForRenderObject() {\n for (const renderingObject of this.renderObjects) {\n renderingObject.object.useVelocity = renderingObject.targetRenderer.useVelocity;\n }\n }\n /** @internal */\n _prepareRendering() {\n for (const renderer of this.targetRenderers) {\n if (renderer.needInitialization) {\n this._initialize();\n return;\n }\n }\n }\n /** @internal */\n _render(forCamera) {\n for (let i = 0; i < this.targetRenderers.length; ++i) {\n if (!forCamera || this.targetRenderers[i].camera === forCamera) {\n this.targetRenderers[i]._clearTargets();\n }\n }\n const iterator = this._cameras.keys();\n for (let key = iterator.next(); key.done !== true; key = iterator.next()) {\n const camera = key.value;\n const list = this._cameras.get(camera);\n if (forCamera && camera !== forCamera) {\n continue;\n }\n const firstPostProcess = camera._getFirstPostProcess();\n if (!firstPostProcess) {\n continue;\n 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