import { GLTexture } from './GLTexture';
import { GLCubemap } from './GLCubemap';
export declare class GLFramebuffer {
    private readonly drawBuffers;
    private gl;
    private width;
    private height;
    private framebuffer;
    private renderbuffer;
    private _textures;
    constructor(gl: WebGL2RenderingContext, width?: number, height?: number);
    checkStatus(): boolean;
    /**
     * Creates a frame buffer with a texture containing the given data
     *
     * @static
     * @param {WebGL2RenderingContext} gl - The current WebGL rendering context
     * @param {number} width - the width of the drawing area of the frame buffer
     * @param {number} height - the height of the drawing area of the frame buffer
     * @param {number} textureID - texture target
     * @param {number} attachment - COLOR_ATTACHMENT
     * @param {number} internalformat
     * @param {number} format
     * @param {number} type
     * @return {GLFramebuffer} The new framebuffer.
     */
    static createRGBA(gl: WebGL2RenderingContext, width: number, height: number, textureID?: number, attachment?: number, internalformat?: number, format?: number, type?: number): GLFramebuffer;
    /**
     * Creates a frame buffer with a texture containing the given data
     *
     * @static
     * @param {WebGL2RenderingContext} gl - The current WebGL rendering context
     * @param {number} width - the width of the drawing area of the frame buffer
     * @param {number} height - the height of the drawing area of the frame buffer
     * @param {ArrayBuffer|SharedArrayBuffer|ArrayBufferView} data - an array of data
     * @param {number} textureID - texture target
     * @param {number} attachment - COLOR_ATTACHMENT
     * @param {number} internalformat
     * @param {number} format
     * @param {number} type
     * @return {GLFramebuffer} The new framebuffer.
     */
    static createFloat32(gl: WebGL2RenderingContext, width: number, height: number, data: any, textureID?: number, attachment?: number, internalformat?: number, format?: number, type?: number): GLFramebuffer;
    /**
     * Adds a texture to the framebuffer.
     * @param {GLTexture} texture - the texture to add.
     * @param {Number} attachment - COLOR_ATTACHMENT
     * @param {Number} face if used for 3d Textures
     * @param {Boolean} setDrawBuffer - adds the attachment to the drawBuffer
     */
    addTargetTexture(texture?: GLTexture | GLCubemap, attachment?: number, face?: number, setDrawBuffer?: boolean): GLFramebuffer;
    setDrawBuffer(drawBuffers?: Array<number>): void;
    /**
     * Initialises the stencil buffer
     */
    createRenderbuffer(): GLFramebuffer;
    /**
     * Erases the drawing area and fills it with a colour
     *
     * @param {number} r - the red value of the clearing colour
     * @param {number} g - the green value of the clearing colour
     * @param {number} b - the blue value of the clearing colour
     * @param {number} a - the alpha value of the clearing colour
     * @param {boolean} depthBuffer - clear DepthBuffer default: false
     * @param {boolean} stencilBuffer - clear StencilBuffer default: false
     */
    clear(r?: number, g?: number, b?: number, a?: number, depthBuffer?: boolean, stencilBuffer?: boolean): GLFramebuffer;
    /**
     * Binds the frame buffer to the WebGL context
     */
    bind(target?: number): GLFramebuffer;
    /**
     * Unbinds the frame buffer to the WebGL context
     */
    unbind(target?: number): GLFramebuffer;
    /**
     * Resizes the drawing area of the buffer to the given width and height
     *
     * @param {number} width - the new width
     * @param {number} height - the new height
     */
    resize(width: number, height: number): GLFramebuffer;
    /**
     * Destroys this buffer
     */
    destroy(): void;
    getTexture(idx?: number): GLTexture | GLCubemap;
    setTexture(value: GLTexture | GLCubemap, idx?: number): void;
    texture: GLTexture | GLCubemap;
    textures: Array<GLTexture | GLCubemap>;
}