import SignBoard from "../SignBoard";
import Texture from "./Texture";
declare class TextTexture implements Texture {
    private _signboard;
    private _canvas;
    private _context;
    private _texture;
    get webGLTexture(): WebGLTexture;
    get size(): {
        width: number;
        height: number;
    };
    constructor(signboard: SignBoard);
    init(gl: WebGLRenderingContext): void;
    update(src?: string): void;
    upload(gl: WebGLRenderingContext): void;
    private _drawText;
    private _getDrawingOptions;
}
export default TextTexture;