/** * * logs out any program errors * @param gl - The current WebGL context * @param program - the WebGL program to display errors for * @param vertexShader - the fragment WebGL shader program * @param fragmentShader - the vertex WebGL shader program */ export declare function logProgramError(gl: WebGLRenderingContext, program: WebGLProgram, vertexShader: WebGLShader, fragmentShader: WebGLShader): void;