diff --git a/render.js b/render.js
index ba5916b..ff452c1 100644
--- a/render.js
+++ b/render.js
@@ -8332,6 +8332,40 @@
 	    return false;
 	};
 
+	/**
+	 * Set a drawable's order in the drawable list (effectively, z/layer).
+	 * Can be used to move drawables to absolute positions in the list,
+	 * or relative to their current positions.
+	 * "go back N layers": setDrawableOrder(id, -N, true, 1); (assuming stage at 0).
+	 * "go to back": setDrawableOrder(id, 1); (assuming stage at 0).
+	 * "go to front": setDrawableOrder(id, Infinity);
+	 * @param {int} drawableID ID of Drawable to reorder.
+	 * @param {Number} order New absolute order or relative order adjusment.
+	 * @param {Boolean=} opt_isRelative If set, `order` refers to a relative change.
+	 * @param {Number=} opt_min If set, order constrained to be at least `opt_min`.
+	 * @return {?Number} New order if changed, or null.
+	 */
+	RenderWebGL.prototype.setDrawableOrder = function (drawableID, order, opt_isRelative, opt_min) {
+	    var oldIndex = this._drawables.indexOf(drawableID);
+	    if (oldIndex >= 0) {
+	        // Remove drawable from the list.
+	        var drawable = this._drawables.splice(oldIndex, 1)[0];
+	        // Determine new index.
+	        var newIndex = order;
+	        if (opt_isRelative) {
+	            newIndex += oldIndex;
+	        }
+	        if (opt_min) {
+	            newIndex = Math.min(newIndex, opt_min);
+	        }
+	        newIndex = Math.max(newIndex, 0);
+	        // Insert at new index.
+	        this._drawables.splice(newIndex, 0, drawable);
+	        return this._drawables.indexOf(drawable);
+	    }
+	    return null;
+	};
+
 	/**
 	 * Draw all current drawables and present the frame on the canvas.
 	 */