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- import { PBRMaterial } from "@babylonjs/core/Materials/PBR/pbrMaterial.js";
- import { GLTFLoader } from "../glTFLoader.js";
- const NAME = "KHR_materials_dispersion";
- /**
- * [Specification](https://github.com/KhronosGroup/glTF/blob/87bd64a7f5e23c84b6aef2e6082069583ed0ddb4/extensions/2.0/Khronos/KHR_materials_dispersion/README.md)
- * @experimental
- */
- // eslint-disable-next-line @typescript-eslint/naming-convention
- export class KHR_materials_dispersion {
- /**
- * @internal
- */
- constructor(loader) {
- /**
- * The name of this extension.
- */
- this.name = NAME;
- /**
- * Defines a number that determines the order the extensions are applied.
- */
- this.order = 174;
- this._loader = loader;
- this.enabled = this._loader.isExtensionUsed(NAME);
- }
- /** @internal */
- dispose() {
- this._loader = null;
- }
- /**
- * @internal
- */
- loadMaterialPropertiesAsync(context, material, babylonMaterial) {
- return GLTFLoader.LoadExtensionAsync(context, material, this.name, (extensionContext, extension) => {
- const promises = new Array();
- promises.push(this._loader.loadMaterialBasePropertiesAsync(context, material, babylonMaterial));
- promises.push(this._loader.loadMaterialPropertiesAsync(context, material, babylonMaterial));
- promises.push(this._loadDispersionPropertiesAsync(extensionContext, material, babylonMaterial, extension));
- return Promise.all(promises).then(() => { });
- });
- }
- _loadDispersionPropertiesAsync(context, material, babylonMaterial, extension) {
- if (!(babylonMaterial instanceof PBRMaterial)) {
- throw new Error(`${context}: Material type not supported`);
- }
- // If transparency isn't enabled already, this extension shouldn't do anything.
- // i.e. it requires either the KHR_materials_transmission or KHR_materials_translucency extensions.
- if (!babylonMaterial.subSurface.isRefractionEnabled || !extension.dispersion) {
- return Promise.resolve();
- }
- babylonMaterial.subSurface.isDispersionEnabled = true;
- babylonMaterial.subSurface.dispersion = extension.dispersion;
- return Promise.resolve();
- }
- }
- GLTFLoader.RegisterExtension(NAME, (loader) => new KHR_materials_dispersion(loader));
- //# sourceMappingURL=KHR_materials_dispersion.js.map
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