/**
 * set precision for the fiven shader source
 * won't do anything if the precision is already specified
 * @ignore
 */
export function setPrecision(src: any, precision: any): any;
/**
 * return the best shader precision for this device, up to the requested cap.
 * @ignore
 * @param {WebGLRenderingContext} gl - the current WebGL context
 * @param {boolean} [highPrecision=true] - if false, cap at "mediump" even when "highp" is available
 * @returns {string} "lowp", "mediump", or "highp"
 */
export function getMaxShaderPrecision(gl: WebGLRenderingContext, highPrecision?: boolean): string;
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