From ec99c957186d0c28c009aedb5702cafe0b16c14f Mon Sep 17 00:00:00 2001
From: Neil Fraser <fraser@google.com>
Date: Sat, 24 Oct 2015 23:51:27 -0400
Subject: [PATCH] Speed up unhiding of workspace with large numbers of blocks.

---
 core/workspace_svg.js | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/core/workspace_svg.js b/core/workspace_svg.js
index 9c0f004bd..34157ce15 100644
--- a/core/workspace_svg.js
+++ b/core/workspace_svg.js
@@ -380,11 +380,11 @@ Blockly.WorkspaceSvg.prototype.setVisible = function(isVisible) {
  * Render all blocks in workspace.
  */
 Blockly.WorkspaceSvg.prototype.render = function() {
-  var renderList = this.getAllBlocks();
-  for (var i = 0, block; block = renderList[i]; i++) {
-    if (!block.getChildren().length) {
-      block.render();
-    }
+  // Generate list of all blocks.
+  var blocks = this.getAllBlocks();
+  // Render each block.
+  for (var i = blocks.length - 1; i >= 0; i--) {
+    blocks[i].render(false);
   }
 };