import type { Fonts } from 'modern-font';
import type { EngineData, EngineProperties } from './Engine';
import type { ImagePipelineResolver } from './scene/2d/element/imagePipeline';
import { Engine } from './Engine';
export interface RenderOptions extends Partial<EngineProperties> {
    data: EngineData;
    width: number;
    height: number;
    debug?: boolean;
    fonts?: Fonts;
    keyframes?: number[];
    /** 图片处理管线解析器：设到渲染引擎实例，使带 imagePipelines 的图片填充在渲染时烘焙。 */
    imagePipelineResolver?: ImagePipelineResolver;
    onBefore?: (engine: Engine) => void | Promise<void>;
    onKeyframe?: (frame: Uint8ClampedArray<ArrayBuffer>, ctx: {
        currentTime: number;
        duration: number;
        progress: number;
    }) => void | Promise<void>;
}
export interface RenderResult {
    pixels: Uint8ClampedArray<ArrayBuffer>;
    toCanvas2D: () => HTMLCanvasElement;
}
export declare function getRenderEngine(): Engine;
export declare function render(options: RenderOptions): Promise<HTMLCanvasElement>;
export declare function renderPixels(options: RenderOptions): Promise<Uint8ClampedArray<ArrayBuffer>>;