export declare type UBOType = 'float' | 'int' | 'bool' | 'boolean' | 'mat4' | 'mat3' | 'vec2' | 'vec3' | 'vec4';
export interface UBOItem {
    type: UBOType;
    offset?: number;
    alignment?: number;
    blockSize?: number;
    alignedByteLength?: number;
    data: ArrayBufferView | ArrayBuffer;
}
export declare class GLUniformBufferObject {
    private static TYPE_TO_SIZE;
    private gl;
    private items;
    /**
     * The draw type of the buffer
     * @member {gl.STATIC_DRAW|gl.DYNAMIC_DRAW|gl.STREAM_DRAW}
     */
    private drawType;
    private type;
    private buffer;
    private _bindingPoint;
    private _byteLength;
    constructor(gl: WebGL2RenderingContext, bindPoint?: number, drawType?: number);
    /**
     * Add an item/property to the UBO
     * make sure that the order of the items is right
     */
    addItem(name: string, type: UBOType, data?: ArrayBuffer | ArrayBufferView): void;
    /**
     * Add an block of items/properties to the UBO
     * make sure the order is the same as in the shader
     */
    addBlock(items: Array<{
        name: string;
        type: UBOType;
        data?: ArrayBuffer | ArrayBufferView;
    }>): void;
    /**
     * Update the item data
     * @param name - name of the item
     * @param data - new data
     * @param updateGL -
     */
    updateItem(name: string, data: ArrayBuffer | ArrayBufferView, updateGL?: boolean): void;
    hasItem(name: string): boolean;
    removeItem(name: string): void;
    /**
     * Update the Buffer for a single item
     * @param name
     */
    updateGL(name: string): void;
    /**
     * upload one buffer instead of adding multiple small items
     * @param data - the buffer containing all values
     * @param byteLength - the aligned componentTypeCount of the UBO
     */
    uploadBuffer(byteLength: number, data?: ArrayBufferView | ArrayBuffer, length?: number): number;
    /**
     * Uploads all data to the gpu
     */
    upload(): number;
    bindUBO(bindingPoint?: number, offset?: number, size?: number): void;
    private bind;
    private unbind;
    destroy(): void;
    private updateItemAlignment;
    bindingPoint: number;
    byteLength: number;
}