import type { WebGLRenderer } from '../../core';
import type { EffectProperties, Node, Viewport } from '../main';
import type { Texture2D } from '../resources';
import { Color } from '../../core';
import { Effect } from '../main/Effect';
import { Material } from '../resources';
export type CheckerboardStyle = 'grid' | 'dot';
export interface DrawboardEffectProperties extends EffectProperties {
    checkerboard?: boolean;
    checkerboardStyle?: CheckerboardStyle;
    pixelGrid?: boolean;
    /** 底纹底色（网格底格 / 点阵底）。颜色字符串，可为主题 token；缺省浅色。 */
    checkerboardColor?: string;
    /** 点阵圆点色。缺省浅灰。 */
    checkerboardDotColor?: string;
    /** 放大时圆点的额外提亮量（0..1）。 */
    dotColorDiff?: number;
    watermark?: string;
    watermarkWidth?: number;
    watermarkAlpha?: number;
    watermarkRotation?: number;
}
export declare class DrawboardEffect extends Effect {
    checkerboard: boolean;
    checkerboardStyle: CheckerboardStyle;
    pixelGrid: boolean;
    checkerboardColor: string;
    checkerboardDotColor: string;
    dotColorDiff: number;
    watermark?: string;
    watermarkWidth: number;
    watermarkAlpha: number;
    watermarkRotation: number;
    protected _watermark?: Texture2D;
    protected _color: Color;
    protected _dotColor: Color;
    static material: Material;
    constructor(properties?: Partial<DrawboardEffectProperties>, children?: Node[]);
    protected _updateProperty(key: string, value: any, oldValue: any): void;
    protected _loadWatermark(value?: string): Promise<void>;
    protected _checkerboardStyleMap: Record<CheckerboardStyle, number>;
    apply(renderer: WebGLRenderer, source: Viewport): void;
}