From 36252a42daad35d6334e1601e95b85e5bb1cb483 Mon Sep 17 00:00:00 2001
From: Enrico Turri <enricoturri@seznam.cz>
Date: Thu, 25 Apr 2019 15:08:14 +0200
Subject: [PATCH] Small optimization

---
 src/slic3r/GUI/GLCanvas3D.cpp | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 9a43ca118..e0884e6b0 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -1617,12 +1617,15 @@ void GLCanvas3D::render()
 
     wxGetApp().imgui()->new_frame();
 
-    if (m_rectangle_selection.is_dragging())
-        // picking pass using rectangle selection
-        _rectangular_selection_picking_pass();
-    else
-        // regular picking pass
-        _picking_pass();
+    if (m_picking_enabled)
+    {
+        if (m_rectangle_selection.is_dragging())
+            // picking pass using rectangle selection
+            _rectangular_selection_picking_pass();
+        else
+            // regular picking pass
+            _picking_pass();
+    }
 
     // draw scene
     glsafe(::glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT));