import * as spec from '@galacean/effects-specification';
import type { Disposable } from './utils';
import type { Engine } from './engine';
import type { ImageLike, SceneLoadOptions } from './scene';
import { Scene } from './scene';
/**
 *
 */
export declare class AssetService implements Disposable {
    private readonly engine;
    private readonly builtinObjects;
    /**
     *
     * @param engine
     */
    constructor(engine: Engine);
    /**
     * @param url
     * @param options
     * @returns
     */
    assembleSceneLoadOptions(url: Scene.LoadType, options?: SceneLoadOptions): {
        source: Scene.LoadType;
        options: SceneLoadOptions;
    };
    /**
     * 根据用户参数修改文本元素的原始数据
     * @param scene
     * @param options
     */
    updateTextVariables(scene: Scene, variables?: spec.TemplateVariables): void;
    initializeTexture(scene: Scene): void;
    prepareAssets(scene: Scene, assets: Record<string, ImageLike>): void;
    createShaderVariant(): void;
    private destroyBuiltinObjects;
    /**
     *
     */
    dispose(): void;
}