code: function() {
  		if ( !this.force2D && WebGLRenderer.isSupported( this.el ) ) {
  			this.renderer = new WebGLRenderer( this.el );
  		} else if ( Canvas2DRenderer.isSupported( this.el ) ) {
  			this.renderer = new Canvas2DRenderer( this.el );
  		} else {
  			throw new Error( "No supported renderer!" );
  		}
  	}
docs: Initialize renderer.