From a178712f6b25c70e8f1370984ad3eb8be6fd94a8 Mon Sep 17 00:00:00 2001
From: Tom Payne <tom.payne@camptocamp.com>
Date: Thu, 13 Feb 2014 14:47:47 +0100
Subject: [PATCH] Only replay replay group if it is not empty

---
 src/ol/renderer/canvas/canvasvectorlayerrenderer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ol/renderer/canvas/canvasvectorlayerrenderer.js b/src/ol/renderer/canvas/canvasvectorlayerrenderer.js
index 3ee5ce40a2..9022383214 100644
--- a/src/ol/renderer/canvas/canvasvectorlayerrenderer.js
+++ b/src/ol/renderer/canvas/canvasvectorlayerrenderer.js
@@ -69,7 +69,7 @@ ol.renderer.canvas.VectorLayer.prototype.composeFrame =
   this.dispatchPreComposeEvent(context, frameState, transform);
 
   var replayGroup = this.replayGroup_;
-  if (!goog.isNull(replayGroup)) {
+  if (!goog.isNull(replayGroup) && !replayGroup.isEmpty()) {
     var renderGeometryFunction = this.getRenderGeometryFunction_();
     goog.asserts.assert(goog.isFunction(renderGeometryFunction));
     context.globalAlpha = layerState.opacity;