@babylonjs/viewer/dist/chunks/KHR_materials_transmission-F904bjAA.esm.min.js

The Babylon Viewer aims to simplify a specific but common Babylon.js use case: loading, viewing, and interacting with a 3D model.

import{bM as e,C as s,O as t,b as r,h as a,bJ as n,bI as i}from"./index-Bw2N6w1y.esm.min.js";import{GLTFLoader as o}from"./glTFLoader-DEYqxGxH.esm.min.js";import"./bone-BwMp7T0B.esm.min.js";import"./skeleton-CkTZwWbM.esm.min.js";import"./rawTexture-CPAqHIA7.esm.min.js";import"./assetContainer-21j7tcC8.esm.min.js";import"./objectModelMapping-DX92iJ8M.esm.min.js";class h{static _GetDefaultOptions(){return{renderSize:1024,samples:4,lodGenerationScale:1,lodGenerationOffset:-4,renderTargetTextureType:s.TEXTURETYPE_HALF_FLOAT,generateMipmaps:!0}}constructor(e,s){this._opaqueRenderTarget=null,this._opaqueMeshesCache=[],this._transparentMeshesCache=[],this._materialObservers={},this._options={...h._GetDefaultOptions(),...e},this._scene=s,this._scene._transmissionHelper=this,this.onErrorObservable=new t,this._scene.onDisposeObservable.addOnce((()=>{this.dispose()})),this._parseScene(),this._setupRenderTargets()}updateOptions(e){if(!Object.keys(e).filter((s=>this._options[s]!==e[s])).length)return;const s={...this._options,...e},t=this._options;this._options=s,s.renderSize===t.renderSize&&s.renderTargetTextureType===t.renderTargetTextureType&&s.generateMipmaps===t.generateMipmaps&&this._opaqueRenderTarget?(this._opaqueRenderTarget.samples=s.samples,this._opaqueRenderTarget.lodGenerationScale=s.lodGenerationScale,this._opaqueRenderTarget.lodGenerationOffset=s.lodGenerationOffset):this._setupRenderTargets()}getOpaqueTarget(){return this._opaqueRenderTarget}_shouldRenderAsTransmission(s){return!!s&&!!(s instanceof e&&s.subSurface.isRefractionEnabled)}_addMesh(e){this._materialObservers[e.uniqueId]=e.onMaterialChangedObservable.add(this._onMeshMaterialChanged.bind(this)),r.SetImmediate((()=>{this._shouldRenderAsTransmission(e.material)?(e.material.refractionTexture=this._opaqueRenderTarget,-1===this._transparentMeshesCache.indexOf(e)&&this._transparentMeshesCache.push(e)):-1===this._opaqueMeshesCache.indexOf(e)&&this._opaqueMeshesCache.push(e)}))}_removeMesh(e){e.onMaterialChangedObservable.remove(this._materialObservers[e.uniqueId]),delete this._materialObservers[e.uniqueId];let s=this._transparentMeshesCache.indexOf(e);-1!==s&&this._transparentMeshesCache.splice(s,1),s=this._opaqueMeshesCache.indexOf(e),-1!==s&&this._opaqueMeshesCache.splice(s,1)}_parseScene(){this._scene.meshes.forEach(this._addMesh.bind(this)),this._scene.onNewMeshAddedObservable.add(this._addMesh.bind(this)),this._scene.onMeshRemovedObservable.add(this._removeMesh.bind(this))}_onMeshMaterialChanged(s){const t=this._transparentMeshesCache.indexOf(s),r=this._opaqueMeshesCache.indexOf(s);this._shouldRenderAsTransmission(s.material)?(s.material instanceof e&&(s.material.subSurface.refractionTexture=this._opaqueRenderTarget),-1!==r?(this._opaqueMeshesCache.splice(r,1),this._transparentMeshesCache.push(s)):-1===t&&this._transparentMeshesCache.push(s)):-1!==t?(this._transparentMeshesCache.splice(t,1),this._opaqueMeshesCache.push(s)):-1===r&&this._opaqueMeshesCache.push(s)}_isRenderTargetValid(){return null!==this._opaqueRenderTarget?.getInternalTexture()}_setupRenderTargets(){let e;this._opaqueRenderTarget&&this._opaqueRenderTarget.dispose(),this._opaqueRenderTarget=new a("opaqueSceneTexture",this._options.renderSize,this._scene,this._options.generateMipmaps,void 0,this._options.renderTargetTextureType),this._opaqueRenderTarget.ignoreCameraViewport=!0,this._opaqueRenderTarget.renderList=this._opaqueMeshesCache,this._opaqueRenderTarget.clearColor=this._options.clearColor?.clone()??this._scene.clearColor.clone(),this._opaqueRenderTarget.gammaSpace=!1,this._opaqueRenderTarget.lodGenerationScale=this._options.lodGenerationScale,this._opaqueRenderTarget.lodGenerationOffset=this._options.lodGenerationOffset,this._opaqueRenderTarget.samples=this._options.samples,this._opaqueRenderTarget.renderSprites=!0,this._opaqueRenderTarget.renderParticles=!0,this._opaqueRenderTarget.disableImageProcessing=!0,this._opaqueRenderTarget.onBeforeBindObservable.add((s=>{e=this._scene.environmentIntensity,this._scene.environmentIntensity=1,this._options.clearColor?s.clearColor.copyFrom(this._options.clearColor):this._scene.clearColor.toLinearSpaceToRef(s.clearColor,this._scene.getEngine().useExactSrgbConversions)})),this._opaqueRenderTarget.onAfterUnbindObservable.add((()=>{this._scene.environmentIntensity=e}));for(const e of this._transparentMeshesCache)this._shouldRenderAsTransmission(e.material)&&(e.material.refractionTexture=this._opaqueRenderTarget)}dispose(){this._scene._transmissionHelper=void 0,this._opaqueRenderTarget&&(this._opaqueRenderTarget.dispose(),this._opaqueRenderTarget=null),this._transparentMeshesCache=[],this._opaqueMeshesCache=[]}}const d="KHR_materials_transmission";class p{constructor(e){this.name=d,this.order=175,this._loader=e,this.enabled=this._loader.isExtensionUsed(d),this.enabled&&(e.parent.transparencyAsCoverage=!0)}dispose(){this._loader=null}loadMaterialPropertiesAsync(e,s,t){return o.LoadExtensionAsync(e,s,this.name,(async(r,a)=>{const n=new Array;return n.push(this._loader.loadMaterialPropertiesAsync(e,s,t)),n.push(this._loadTransparentPropertiesAsync(r,s,t,a)),await Promise.all(n).then((()=>{}))}))}_loadTransparentPropertiesAsync(s,t,r,a){if(!(r instanceof e))throw new Error(`${s}: Material type not supported`);const n=r;if(n.subSurface.isRefractionEnabled=!0,n.subSurface.volumeIndexOfRefraction=1,n.subSurface.useAlbedoToTintRefraction=!0,void 0===a.transmissionFactor)return n.subSurface.refractionIntensity=0,n.subSurface.isRefractionEnabled=!1,Promise.resolve();{n.subSurface.refractionIntensity=a.transmissionFactor;const e=n.getScene();n.subSurface.refractionIntensity&&!e._transmissionHelper?new h({},n.getScene()):n.subSurface.refractionIntensity&&!e._transmissionHelper?._isRenderTargetValid()&&e._transmissionHelper?._setupRenderTargets()}return n.subSurface.minimumThickness=0,n.subSurface.maximumThickness=0,a.transmissionTexture?(a.transmissionTexture.nonColorData=!0,this._loader.loadTextureInfoAsync(`${s}/transmissionTexture`,a.transmissionTexture,void 0).then((e=>{e.name=`${r.name} (Transmission)`,n.subSurface.refractionIntensityTexture=e,n.subSurface.useGltfStyleTextures=!0}))):Promise.resolve()}}n(d),i(d,!0,(e=>new p(e)));export{p as KHR_materials_transmission};
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