import { GLBuffer } from './GLBuffer';
import { GLAttribute } from './shader/GLAttribute';
export interface Attribute {
    buffer: GLBuffer;
    attribute: GLAttribute;
    size: number;
    type: number;
    normalized: boolean;
    stride: number;
    offset: number;
    initialize: boolean;
}
export declare class GLVertexArrayObject {
    private gl;
    private vao;
    private attributes;
    private indexBuffer;
    private dirty;
    constructor(gl: WebGL2RenderingContext);
    /**
     * Binds the VAO, if its dirty it will initialize the attributes for the data
     */
    bind(): GLVertexArrayObject;
    /**
     * Activates the vao,
     * binds the data and applies the Attributes
     */
    protected activate(): this;
    /**
     * Deactivates the non native VertexArrayObject
     */
    protected deactivate(): this;
    /**
     * Unbind the VAO
     */
    unbind(force?: boolean): this;
    addAttribute(buffer: GLBuffer, attribute: GLAttribute, size: number, type: number, normalized: boolean, stride: number, offset: number, initialize?: boolean): GLVertexArrayObject;
    setIndexBuffer(buffer: GLBuffer): GLVertexArrayObject;
    draw(mode: number, size: number, type: number, offset: number): GLVertexArrayObject;
    /**
     * Removes all attributes from this vao
     * and deactivates the GLAttributes
     */
    clear(): void;
    /**
     * Clears the buffer the removes all references
     * making it free for gc
     */
    destroy(): void;
    static setVertexAttribArrays(gl: WebGL2RenderingContext, attributes: Array<Attribute>, unbind?: boolean): void;
    static setVertexAttribArray(gl: WebGL2RenderingContext, attribute: Attribute, unbind?: boolean): void;
}