export declare function createGLContext(canvas: HTMLCanvasElement, options: any): any;
/**
* Create a shader object
* @param gl GL context
* @param type the type of the shader object to be created
* @param source shader program (string)
* @return created shader object, or null if the creation has failed.
* @private
*/
export declare function compileShader(gl: WebGL2RenderingContext, type: number, source: string): WebGLShader;
/**
 * Create the linked program object
 * @param gl WebGL2RenderingContext
 * @param vert a vertex shader program (string)
 * @param frag a fragment shader program (string)
 * @return created program object, or null if the creation has failed
 * @private
 */
export declare function createProgram(gl: WebGL2RenderingContext | any, vert: string, frag: string): {
    program: any;
    vertexShader: WebGLShader;
    fragmentShader: WebGLShader;
};
/**
 * Enable vertex attributes
 * @param gl WebGL2RenderingContext
 * @param attributes [[name, stride, type], [name, stride, type]...]
 * @example
 * rendererr.enableVertexAttrib([
 *  ['a_position', 3, 'FLOAT'],
 *  ['a_normal', 3, 'FLOAT']
 * ]);
 * @private
 */
export declare function enableVertexAttrib(gl: WebGL2RenderingContext | any, program: WebGLProgram, attributes: any[]): void;
declare const DEPTH_FUNC_CONSTANTS: {
    never: number;
    '<': number;
    '=': number;
    '<=': number;
    '>': number;
    '!=': number;
    '>=': number;
    always: number;
};
export declare function getDepthFunc(v: keyof typeof DEPTH_FUNC_CONSTANTS): number;
export {};
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