code: function cacheUniformLocations ( program, identifiers ) {
  
  		var i, l, id;
  
  		for( i = 0, l = identifiers.length; i < l; i ++ ) {
  
  			id = identifiers[ i ];
  			program.uniforms[ id ] = _gl.getUniformLocation( program, id );
  
  		}
  
  	}
docs: Shader parameters cache