import type { DisplayObject } from '@antv/g-lite';
import { Instanced } from './Instanced';
/**
 * Use SDF to render 2D shapes, eg. circle, ellipse.
 * Use less triangles(2) and vertices compared with normal triangulation.
 */
export declare class SDFDrawcall extends Instanced {
    shouldMerge(object: DisplayObject, index: number): boolean;
    createMaterial(objects: DisplayObject[]): void;
    createGeometry(objects: DisplayObject[]): void;
    updateAttribute(objects: DisplayObject[], startIndex: number, name: string, value: any): void;
    private getPosition;
    private getSize;
    private shouldOmitStroke;
}
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