import type FrameBuffer from '../FrameBuffer';
import Texture from '../Texture';
import GLTexture from './GLTexture';
declare class GLFrameBuffer {
    private _fb;
    private _webglFb?;
    private _webglRb?;
    private _webglRbW?;
    private _webglRbH?;
    private _bound?;
    private _textures;
    constructor(frambuffer: FrameBuffer);
    bind(gl: WebGL2RenderingContext, helpers: {
        getGLTexture: (texture: Texture) => GLTexture;
        getGLExtension: (name: string) => any;
    }): void;
    unbind(gl: WebGL2RenderingContext, nextFameBuffer?: GLFrameBuffer): void;
    updateMipmap(gl: WebGL2RenderingContext): void;
    dispose(gl: WebGL2RenderingContext): void;
    checkStatus(_gl: WebGL2RenderingContext): number;
}
export default GLFrameBuffer;