From 0f988fb209cdc93a6a848495a6f66e7346e23fc9 Mon Sep 17 00:00:00 2001
From: SamGondelman <samuel_gondelman@brown.edu>
Date: Thu, 11 Aug 2016 13:05:16 -0700
Subject: [PATCH] don't always mark _shaderDirty when user data changes unless
 url actually changes

---
 libraries/procedural/src/procedural/Procedural.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libraries/procedural/src/procedural/Procedural.cpp b/libraries/procedural/src/procedural/Procedural.cpp
index 79a90ef72d..27662e96d0 100644
--- a/libraries/procedural/src/procedural/Procedural.cpp
+++ b/libraries/procedural/src/procedural/Procedural.cpp
@@ -115,6 +115,11 @@ bool Procedural::parseUrl(const QUrl& shaderUrl) {
         return false;
     }
 
+    // If the URL hasn't changed, don't mark the shader as dirty
+    if (_shaderUrl == shaderUrl) {
+        return true;
+    }
+
     _shaderUrl = shaderUrl;
     _shaderDirty = true;